Merge with 2.0.0-m3

.mvn/wrapper/maven-wrapper.properties

@@ -1 +1,2 @@
+# Keep this version number in sync with Jenkinsfile
 distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.2/apache-maven-3.5.2-bin.zip

Jenkinsfile

@@ -11,16 +11,14 @@ node() { // No specific label
 
   properties([
     // Keep only the last 10 build to preserve space
-    buildDiscarder(logRotator(numToKeepStr: '10')),
+    buildDiscarder(logRotator(numToKeepStr: '10'))
   ])
 
+  timeout(activity: true, time: 20, unit: 'MINUTES') {
+
     catchError {
 
       Maven mvn = setupMavenBuild()
-    // Maven build specified it must be 1.8.0-101 or newer
-    def javaHome = tool 'JDK-1.8.0-101+'
-
-    withEnv(["JAVA_HOME=${javaHome}", "PATH=${env.JAVA_HOME}/bin:${env.PATH}"]) {
 
       stage('Checkout') {
         checkout scm
@@ -47,7 +45,6 @@ node() { // No specific label
         }
       }
     }
-  }
 
     // Archive Unit and integration test results, if any
     junit allowEmptyResults: true, testResults: '**/target/failsafe-reports/TEST-*.xml,**/target/surefire-reports/TEST-*.xml,**/target/jest-reports/TEST-*.xml'
@@ -57,11 +54,13 @@ node() { // No specific label
 
     mailIfStatusChanged(commitAuthorEmail)
   }
+}
 
 String mainBranch
 
 Maven setupMavenBuild() {
-  Maven mvn = new MavenWrapper(this)
+  // Keep this version number in sync with .mvn/maven-wrapper.properties
+  Maven mvn = new MavenInDocker(this, "3.5.2-jdk-8")
 
   if (mainBranch.equals(env.BRANCH_NAME)) {
     // Release starts javadoc, which takes very long, so do only for certain branches

pom.xml

@@ -430,7 +430,9 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>animal-sniffer-maven-plugin</artifactId>
-        <version>1.17</version>
+        <!-- Note: 1.17 seems to have problems with JDK8. When updating, use > 1.17, if available!
+             https://github.com/mojohaus/animal-sniffer/issues/53 -->
+        <version>1.16</version>
         <configuration>
           <signature>
             <groupId>org.codehaus.mojo.signature</groupId>

scm-core/pom.xml

@@ -33,6 +33,13 @@
       <version>2.0.0-SNAPSHOT</version>
     </dependency>
 
+    <dependency>
+      <groupId>org.projectlombok</groupId>
+      <artifactId>lombok</artifactId>
+      <scope>provided</scope>
+    </dependency>
+
+    
     <!-- logging -->
 
     <dependency>

scm-core/src/main/java/sonia/scm/ArgumentIsInvalidException.java

@@ -1,85 +0,0 @@
-/**
- * Copyright (c) 2010, Sebastian Sdorra
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- * 3. Neither the name of SCM-Manager; nor the names of its
- *    contributors may be used to endorse or promote products derived from this
- *    software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * http://bitbucket.org/sdorra/scm-manager
- *
- */
-
-
-package sonia.scm;
-
-/**
- *
- * @author Sebastian Sdorra
- * @since 1.17
- */
-public class ArgumentIsInvalidException extends IllegalStateException
-{
-
-  /**
-   * Constructs ...
-   *
-   */
-  public ArgumentIsInvalidException()
-  {
-    super();
-  }
-
-  /**
-   * Constructs ...
-   *
-   *
-   * @param s
-   */
-  public ArgumentIsInvalidException(String s)
-  {
-    super(s);
-  }
-
-  /**
-   * Constructs ...
-   *
-   *
-   * @param cause
-   */
-  public ArgumentIsInvalidException(Throwable cause)
-  {
-    super(cause);
-  }
-
-  /**
-   * Constructs ...
-   *
-   *
-   * @param message
-   * @param cause
-   */
-  public ArgumentIsInvalidException(String message, Throwable cause)
-  {
-    super(message, cause);
-  }
-}

scm-core/src/main/java/sonia/scm/api/v2/resources/BaseMapper.java

@@ -3,14 +3,8 @@ package sonia.scm.api.v2.resources;
 import de.otto.edison.hal.HalRepresentation;
 import org.mapstruct.Mapping;
 
-import java.time.Instant;
+public abstract class BaseMapper<T, D extends HalRepresentation> implements InstantAttributeMapper {
-
-public abstract class BaseMapper<T, D extends HalRepresentation> {
 
   @Mapping(target = "attributes", ignore = true) // We do not map HAL attributes
   public abstract D map(T modelObject);
-
-  protected Instant mapTime(Long epochMilli) {
-    return epochMilli == null? null: Instant.ofEpochMilli(epochMilli);
-  }
 }

scm-core/src/main/java/sonia/scm/api/v2/resources/InstantAttributeMapper.java

@@ -0,0 +1,9 @@
+package sonia.scm.api.v2.resources;
+
+import java.time.Instant;
+
+public interface InstantAttributeMapper {
+  default Instant mapTime(Long epochMilli) {
+    return epochMilli == null? null: Instant.ofEpochMilli(epochMilli);
+  }
+}

scm-core/src/main/java/sonia/scm/api/v2/resources/LinkBuilder.java

@@ -3,7 +3,6 @@ package sonia.scm.api.v2.resources;
 import com.google.common.collect.ImmutableList;
 
 import javax.ws.rs.core.UriBuilder;
-import javax.ws.rs.core.UriInfo;
 import java.net.URI;
 import java.util.Arrays;
 
@@ -14,7 +13,7 @@ import java.util.Arrays;
  * builder for each method.
  *
  * <pre>
- * LinkBuilder builder = new LinkBuilder(uriInfo, MainResource.class, SubResource.class);
+ * LinkBuilder builder = new LinkBuilder(pathInfo, MainResource.class, SubResource.class);
  * Link link = builder
  *     .method("sub")
  *     .parameters("param")
@@ -25,16 +24,16 @@ import java.util.Arrays;
  */
 @SuppressWarnings("WeakerAccess") // Non-public will result in IllegalAccessError for plugins
 public class LinkBuilder {
-  private final UriInfo uriInfo;
+  private final ScmPathInfo pathInfo;
   private final Class[] classes;
   private final ImmutableList<Call> calls;
 
-  public LinkBuilder(UriInfo uriInfo, Class... classes) {
+  public LinkBuilder(ScmPathInfo pathInfo, Class... classes) {
-    this(uriInfo, classes, ImmutableList.of());
+    this(pathInfo, classes, ImmutableList.of());
   }
 
-  private LinkBuilder(UriInfo uriInfo, Class[] classes, ImmutableList<Call> calls) {
+  private LinkBuilder(ScmPathInfo pathInfo, Class[] classes, ImmutableList<Call> calls) {
-    this.uriInfo = uriInfo;
+    this.pathInfo = pathInfo;
     this.classes = classes;
     this.calls = calls;
   }
@@ -51,7 +50,7 @@ public class LinkBuilder {
       throw new IllegalStateException("not enough methods for all classes");
     }
 
-    URI baseUri = uriInfo.getBaseUri();
+    URI baseUri = pathInfo.getApiRestUri();
     URI relativeUri = createRelativeUri();
     return baseUri.resolve(relativeUri);
   }
@@ -61,7 +60,7 @@ public class LinkBuilder {
   }
 
   private LinkBuilder add(String method, String[] parameters) {
-    return new LinkBuilder(uriInfo, classes, appendNewCall(method, parameters));
+    return new LinkBuilder(pathInfo, classes, appendNewCall(method, parameters));
   }
 
   private ImmutableList<Call> appendNewCall(String method, String[] parameters) {

scm-core/src/main/java/sonia/scm/api/v2/resources/ScmPathInfo.java

@@ -0,0 +1,14 @@
+package sonia.scm.api.v2.resources;
+
+import java.net.URI;
+
+public interface ScmPathInfo {
+
+  String REST_API_PATH = "/api/rest";
+
+  URI getApiRestUri();
+
+  default URI getRootUri() {
+    return getApiRestUri().resolve("../..");
+  }
+}

scm-core/src/main/java/sonia/scm/api/v2/resources/ScmPathInfoStore.java

@@ -0,0 +1,18 @@
+package sonia.scm.api.v2.resources;
+
+public class ScmPathInfoStore {
+
+  private ScmPathInfo pathInfo;
+
+  public ScmPathInfo get() {
+    return pathInfo;
+  }
+
+  public void set(ScmPathInfo info) {
+    if (this.pathInfo != null) {
+      throw new IllegalStateException("UriInfo already set");
+    }
+    this.pathInfo = info;
+  }
+
+}

scm-core/src/main/java/sonia/scm/api/v2/resources/UriInfoStore.java

@@ -1,19 +0,0 @@
-package sonia.scm.api.v2.resources;
-
-import javax.ws.rs.core.UriInfo;
-
-public class UriInfoStore {
-
-  private UriInfo uriInfo;
-
-  public UriInfo get() {
-    return uriInfo;
-  }
-
-  public void set(UriInfo uriInfo) {
-    if (this.uriInfo != null) {
-      throw new IllegalStateException("UriInfo already set");
-    }
-    this.uriInfo = uriInfo;
-  }
-}

scm-core/src/main/java/sonia/scm/filter/Filters.java

@@ -31,6 +31,8 @@
 
 package sonia.scm.filter;
 
+import static sonia.scm.api.v2.resources.ScmPathInfo.REST_API_PATH;
+
 /**
  * Useful constants for filter implementations.
  *
@@ -44,26 +46,26 @@ public final class Filters
   public static final String PATTERN_ALL = "/*";
 
   /** Field description */
-  public static final String PATTERN_CONFIG = "/api/rest/config*";
+  public static final String PATTERN_CONFIG = REST_API_PATH + "/config*";
 
   /** Field description */
   public static final String PATTERN_DEBUG = "/debug.html";
 
   /** Field description */
-  public static final String PATTERN_GROUPS = "/api/rest/groups*";
+  public static final String PATTERN_GROUPS = REST_API_PATH + "/groups*";
 
   /** Field description */
-  public static final String PATTERN_PLUGINS = "/api/rest/plugins*";
+  public static final String PATTERN_PLUGINS = REST_API_PATH + "/plugins*";
 
   /** Field description */
   public static final String PATTERN_RESOURCE_REGEX =
     "^/(?:resources|api|plugins|index)[\\./].*(?:html|\\.css|\\.js|\\.xml|\\.json|\\.txt)";
 
   /** Field description */
-  public static final String PATTERN_RESTAPI = "/api/rest/*";
+  public static final String PATTERN_RESTAPI = REST_API_PATH + "/*";
 
   /** Field description */
-  public static final String PATTERN_USERS = "/api/rest/users*";
+  public static final String PATTERN_USERS = REST_API_PATH + "/users*";
 
   /** authentication priority */
   public static final int PRIORITY_AUTHENTICATION = 5000;

scm-core/src/main/java/sonia/scm/plugin/WebResourceLoader.java

@@ -33,9 +33,8 @@ package sonia.scm.plugin;
 
 //~--- JDK imports ------------------------------------------------------------
 
-import java.net.URL;
-
 import javax.servlet.ServletContext;
+import java.net.URL;
 
 /**
  * The WebResourceLoader is able to load web resources. The resources are loaded

scm-core/src/main/java/sonia/scm/repository/Changeset.java

@@ -41,7 +41,6 @@ import sonia.scm.util.ValidationUtil;
 
 import javax.xml.bind.annotation.XmlAccessType;
 import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlElement;
 import javax.xml.bind.annotation.XmlRootElement;
 import java.util.ArrayList;
 import java.util.Date;
@@ -84,12 +83,6 @@ public class Changeset extends BasicPropertiesAware implements ModelObject {
    */
   private String id;
 
-  /**
-   * List of files changed by this changeset
-   */
-  @XmlElement(name = "modifications")
-  private Modifications modifications;
-
   /**
    * parent changeset ids
    */
@@ -137,7 +130,6 @@ public class Changeset extends BasicPropertiesAware implements ModelObject {
            && Objects.equal(parents, other.parents)
            && Objects.equal(tags, other.tags)
            && Objects.equal(branches, other.branches)
-           && Objects.equal(modifications, other.modifications)
            && Objects.equal(properties, other.properties);
     //J+
   }
@@ -152,7 +144,7 @@ public class Changeset extends BasicPropertiesAware implements ModelObject {
   public int hashCode()
   {
     return Objects.hashCode(id, date, author, description, parents, tags,
-                            branches, modifications, properties);
+                            branches,  properties);
   }
 
   /**
@@ -184,11 +176,6 @@ public class Changeset extends BasicPropertiesAware implements ModelObject {
     out.append("branches: ").append(Util.toString(branches)).append("\n");
     out.append("tags: ").append(Util.toString(tags)).append("\n");
 
-    if (modifications != null)
-    {
-      out.append("modifications: \n").append(modifications);
-    }
-
     return out.toString();
   }
 
@@ -285,21 +272,6 @@ public class Changeset extends BasicPropertiesAware implements ModelObject {
   }
 
 
-  /**
-   * Returns the file modifications, which was done with this changeset.
-   *
-   *
-   * @return file modifications
-   */
-  public Modifications getModifications()
-  {
-    if (modifications == null)
-    {
-      modifications = new Modifications();
-    }
-
-    return modifications;
-  }
 
   /**
    * Return the ids of the parent changesets.
@@ -402,17 +374,6 @@ public class Changeset extends BasicPropertiesAware implements ModelObject {
     this.id = id;
   }
 
-  /**
-   * Sets the file modification of the changeset.
-   *
-   *
-   * @param modifications file modifications
-   */
-  public void setModifications(Modifications modifications)
-  {
-    this.modifications = modifications;
-  }
-
   /**
    * Sets the parents of the changeset.
    *

scm-core/src/main/java/sonia/scm/repository/EscapeUtil.java

@@ -36,15 +36,13 @@ package sonia.scm.repository;
 //~--- non-JDK imports --------------------------------------------------------
 
 import com.google.common.collect.Lists;
-
 import org.apache.commons.lang.StringEscapeUtils;
-
 import sonia.scm.util.Util;
 
-//~--- JDK imports ------------------------------------------------------------
-
 import java.util.List;
 
+//~--- JDK imports ------------------------------------------------------------
+
 /**
  *
  * @author Sebastian Sdorra
@@ -200,4 +198,10 @@ public final class EscapeUtil
 
     return values;
   }
+
+  public static void escape(Modifications modifications) {
+    modifications.setAdded(escapeList(modifications.getAdded()));
+    modifications.setModified(escapeList(modifications.getModified()));
+    modifications.setRemoved(escapeList(modifications.getRemoved()));
+  }
 }

scm-core/src/main/java/sonia/scm/repository/Modifications.java

@@ -67,7 +67,8 @@ public class Modifications implements Serializable
    * Constructs ...
    *
    */
-  public Modifications() {}
+  public Modifications() {
+  }
 
   /**
    * Constructs ...
@@ -218,6 +219,10 @@ public class Modifications implements Serializable
     return removed;
   }
 
+  public String getRevision() {
+    return revision;
+  }
+
   //~--- set methods ----------------------------------------------------------
 
   /**
@@ -253,8 +258,14 @@ public class Modifications implements Serializable
     this.removed = removed;
   }
 
+  public void setRevision(String revision) {
+    this.revision = revision;
+  }
+
   //~--- fields ---------------------------------------------------------------
 
+  private String revision;
+
   /** list of added files */
   @XmlElement(name = "added")
   @XmlElementWrapper(name = "added")

scm-core/src/main/java/sonia/scm/repository/ModificationsPreProcessor.java

@@ -0,0 +1,23 @@
+package sonia.scm.repository;
+
+import sonia.scm.plugin.ExtensionPoint;
+
+
+/**
+ * A pre processor for {@link Modifications} objects. A pre processor is able to
+ * modify the object before it is delivered to the user interface.
+ *
+ * @author Mohamed Karray
+ * @since 2.0
+ */
+@ExtensionPoint
+public interface ModificationsPreProcessor extends PreProcessor<Modifications> {
+
+  /**
+   * Process the given modifications.
+   *
+   * @param modifications modifications to process
+   */
+  @Override
+  void process(Modifications modifications);
+}

scm-core/src/main/java/sonia/scm/repository/ModificationsPreProcessorFactory.java

@@ -0,0 +1,26 @@
+package sonia.scm.repository;
+
+import sonia.scm.plugin.ExtensionPoint;
+
+
+/**
+ * This factory create a {@link ModificationsPreProcessor}
+ *
+ * @author Mohamed Karray
+ * @since 2.0
+ */
+@ExtensionPoint
+public interface ModificationsPreProcessorFactory extends PreProcessorFactory<Modifications> {
+
+  /**
+   * Create a new {@link ModificationsPreProcessor} for the given repository.
+   *
+   *
+   * @param repository repository
+   *
+   * @return {@link ModificationsPreProcessor} for the given repository
+   */
+  @Override
+  ModificationsPreProcessor createPreProcessor(Repository repository);
+
+}

scm-core/src/main/java/sonia/scm/repository/PreProcessorUtil.java

@@ -36,17 +36,15 @@ package sonia.scm.repository;
 //~--- non-JDK imports --------------------------------------------------------
 
 import com.google.inject.Inject;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
-
 import sonia.scm.util.Util;
 
-//~--- JDK imports ------------------------------------------------------------
-
 import java.util.Collection;
 import java.util.Set;
 
+//~--- JDK imports ------------------------------------------------------------
+
 /**
  *
  * @author Sebastian Sdorra
@@ -73,6 +71,8 @@ public class PreProcessorUtil
    * @param fileObjectPreProcessorFactorySet
    * @param blameLinePreProcessorSet
    * @param blameLinePreProcessorFactorySet
+   * @param modificationsPreProcessorFactorySet
+   * @param modificationsPreProcessorSet
    */
   @Inject
   public PreProcessorUtil(Set<ChangesetPreProcessor> changesetPreProcessorSet,
@@ -80,7 +80,9 @@ public class PreProcessorUtil
                           Set<FileObjectPreProcessor> fileObjectPreProcessorSet,
                           Set<FileObjectPreProcessorFactory> fileObjectPreProcessorFactorySet,
                           Set<BlameLinePreProcessor> blameLinePreProcessorSet,
-    Set<BlameLinePreProcessorFactory> blameLinePreProcessorFactorySet)
+                          Set<BlameLinePreProcessorFactory> blameLinePreProcessorFactorySet,
+                          Set<ModificationsPreProcessorFactory> modificationsPreProcessorFactorySet,
+                          Set<ModificationsPreProcessor> modificationsPreProcessorSet)
   {
     this.changesetPreProcessorSet = changesetPreProcessorSet;
     this.changesetPreProcessorFactorySet = changesetPreProcessorFactorySet;
@@ -88,6 +90,8 @@ public class PreProcessorUtil
     this.fileObjectPreProcessorFactorySet = fileObjectPreProcessorFactorySet;
     this.blameLinePreProcessorSet = blameLinePreProcessorSet;
     this.blameLinePreProcessorFactorySet = blameLinePreProcessorFactorySet;
+    this.modificationsPreProcessorFactorySet = modificationsPreProcessorFactorySet;
+    this.modificationsPreProcessorSet = modificationsPreProcessorSet;
   }
 
   //~--- methods --------------------------------------------------------------
@@ -108,13 +112,7 @@ public class PreProcessorUtil
     }
 
     EscapeUtil.escape(blameLine);
-
+    handlePreProcess(repository,blameLine,blameLinePreProcessorFactorySet, blameLinePreProcessorSet);
-    PreProcessorHandler<BlameLine> handler =
-      new PreProcessorHandler<BlameLine>(blameLinePreProcessorFactorySet,
-        blameLinePreProcessorSet, repository);
-
-    handler.callPreProcessors(blameLine);
-    handler.callPreProcessorFactories(blameLine);
   }
 
   /**
@@ -152,13 +150,7 @@ public class PreProcessorUtil
     {
       EscapeUtil.escape(blameResult);
     }
-
+    handlePreProcessForIterable(repository, blameResult.getBlameLines(),blameLinePreProcessorFactorySet, blameLinePreProcessorSet);
-    PreProcessorHandler<BlameLine> handler =
-      new PreProcessorHandler<BlameLine>(blameLinePreProcessorFactorySet,
-        blameLinePreProcessorSet, repository);
-
-    handler.callPreProcessors(blameResult.getBlameLines());
-    handler.callPreProcessorFactories(blameResult.getBlameLines());
   }
 
   /**
@@ -183,26 +175,20 @@ public class PreProcessorUtil
    *
    * @since 1.35
    */
-  public void prepareForReturn(Repository repository, Changeset changeset,
+  public void prepareForReturn(Repository repository, Changeset changeset, boolean escape){
-    boolean escape)
+    logger.trace("prepare changeset {} of repository {} for return", changeset.getId(), repository.getName());
-  {
+    if (escape) {
-    if (logger.isTraceEnabled())
-    {
-      logger.trace("prepare changeset {} of repository {} for return",
-        changeset.getId(), repository.getName());
-    }
-
-    if (escape)
-    {
       EscapeUtil.escape(changeset);
     }
+    handlePreProcess(repository, changeset, changesetPreProcessorFactorySet, changesetPreProcessorSet);
+  }
 
-    PreProcessorHandler<Changeset> handler =
+  public void prepareForReturn(Repository repository, Modifications modifications, boolean escape) {
-      new PreProcessorHandler<Changeset>(changesetPreProcessorFactorySet,
+    logger.trace("prepare modifications {} of repository {} for return", modifications, repository.getName());
-        changesetPreProcessorSet, repository);
+    if (escape) {
-
+      EscapeUtil.escape(modifications);
-    handler.callPreProcessors(changeset);
+    }
-    handler.callPreProcessorFactories(changeset);
+    handlePreProcess(repository, modifications, modificationsPreProcessorFactorySet, modificationsPreProcessorSet);
   }
 
   /**
@@ -240,13 +226,7 @@ public class PreProcessorUtil
     {
       EscapeUtil.escape(result);
     }
-
+    handlePreProcessForIterable(repository, result,fileObjectPreProcessorFactorySet, fileObjectPreProcessorSet);
-    PreProcessorHandler<FileObject> handler =
-      new PreProcessorHandler<FileObject>(fileObjectPreProcessorFactorySet,
-        fileObjectPreProcessorSet, repository);
-
-    handler.callPreProcessors(result);
-    handler.callPreProcessorFactories(result);
   }
 
   /**
@@ -272,13 +252,7 @@ public class PreProcessorUtil
     {
       EscapeUtil.escape(result);
     }
-
+    handlePreProcessForIterable(repository,result,changesetPreProcessorFactorySet, changesetPreProcessorSet);
-    PreProcessorHandler<Changeset> handler =
-      new PreProcessorHandler<Changeset>(changesetPreProcessorFactorySet,
-        changesetPreProcessorSet, repository);
-
-    handler.callPreProcessors(result);
-    handler.callPreProcessorFactories(result);
   }
 
   /**
@@ -294,6 +268,23 @@ public class PreProcessorUtil
     prepareForReturn(repository, result, true);
   }
 
+
+  private <T, F extends PreProcessorFactory<T>, P extends PreProcessor<T>> void handlePreProcess(Repository repository, T processedObject,
+                                                                                                 Collection<F> factories,
+                                                                                                 Collection<P> preProcessors) {
+    PreProcessorHandler<T> handler = new PreProcessorHandler<T>(factories, preProcessors, repository);
+    handler.callPreProcessors(processedObject);
+    handler.callPreProcessorFactories(processedObject);
+  }
+
+  private <T, I extends Iterable<T>, F extends PreProcessorFactory<T>, P extends PreProcessor<T>> void handlePreProcessForIterable(Repository repository, I processedObjects,
+                                                                                                 Collection<F> factories,
+                                                                                                 Collection<P> preProcessors) {
+    PreProcessorHandler<T> handler = new PreProcessorHandler<T>(factories, preProcessors, repository);
+    handler.callPreProcessors(processedObjects);
+    handler.callPreProcessorFactories(processedObjects);
+  }
+
   //~--- inner classes --------------------------------------------------------
 
   /**
@@ -454,6 +445,10 @@ public class PreProcessorUtil
   /** Field description */
   private final Collection<ChangesetPreProcessor> changesetPreProcessorSet;
 
+  private final Collection<ModificationsPreProcessorFactory> modificationsPreProcessorFactorySet;
+
+  private final Collection<ModificationsPreProcessor> modificationsPreProcessorSet;
+
   /** Field description */
   private final Collection<FileObjectPreProcessorFactory> fileObjectPreProcessorFactorySet;
 

scm-core/src/main/java/sonia/scm/repository/Repository.java

@@ -40,7 +40,6 @@ import com.google.common.base.Objects;
 import com.google.common.collect.Lists;
 import sonia.scm.BasicPropertiesAware;
 import sonia.scm.ModelObject;
-import sonia.scm.util.HttpUtil;
 import sonia.scm.util.Util;
 import sonia.scm.util.ValidationUtil;
 
@@ -349,17 +348,6 @@ public class Repository extends BasicPropertiesAware implements ModelObject, Per
     // do not copy health check results
   }
 
-  /**
-   * Creates the url of the repository.
-   *
-   * @param baseUrl base url of the server including the context path
-   * @return url of the repository
-   * @since 1.17
-   */
-  public String createUrl(String baseUrl) {
-    return HttpUtil.concatenate(baseUrl, type, namespace, name);
-  }
-
   /**
    * Returns true if the {@link Repository} is the same as the obj argument.
    *

scm-core/src/main/java/sonia/scm/repository/RepositoryManager.java

@@ -38,7 +38,6 @@ package sonia.scm.repository;
 import sonia.scm.AlreadyExistsException;
 import sonia.scm.TypeManager;
 
-import javax.servlet.http.HttpServletRequest;
 import java.io.IOException;
 import java.util.Collection;
 
@@ -99,29 +98,6 @@ public interface RepositoryManager
    */
   public Collection<RepositoryType> getConfiguredTypes();
 
-  /**
-   * Returns the {@link Repository} associated to the request uri.
-   *
-   *
-   * @param request the current http request
-   *
-   * @return associated to the request uri
-   * @since 1.9
-   */
-  public Repository getFromRequest(HttpServletRequest request);
-
-  /**
-   * Returns the {@link Repository} associated to the request uri.
-   *
-   *
-   *
-   * @param uri request uri without context path
-   *
-   * @return  associated to the request uri
-   * @since 1.9
-   */
-  public Repository getFromUri(String uri);
-
   /**
    * Returns a {@link RepositoryHandler} by the given type (hg, git, svn ...).
    *

scm-core/src/main/java/sonia/scm/repository/RepositoryManagerDecorator.java

@@ -39,7 +39,6 @@ import sonia.scm.AlreadyExistsException;
 import sonia.scm.ManagerDecorator;
 import sonia.scm.Type;
 
-import javax.servlet.http.HttpServletRequest;
 import java.io.IOException;
 import java.util.Collection;
 
@@ -120,34 +119,6 @@ public class RepositoryManagerDecorator
     return decorated;
   }
 
-  /**
-   * {@inheritDoc}
-   *
-   *
-   * @param request
-   *
-   * @return
-   */
-  @Override
-  public Repository getFromRequest(HttpServletRequest request)
-  {
-    return decorated.getFromRequest(request);
-  }
-
-  /**
-   * {@inheritDoc}
-   *
-   *
-   * @param uri
-   *
-   * @return
-   */
-  @Override
-  public Repository getFromUri(String uri)
-  {
-    return decorated.getFromUri(uri);
-  }
-
   /**
    * {@inheritDoc}
    *

scm-core/src/main/java/sonia/scm/repository/RepositoryNotFoundException.java

@@ -44,8 +44,8 @@ import sonia.scm.NotFoundException;
 public class RepositoryNotFoundException extends NotFoundException
 {
 
-  /** Field description */
   private static final long serialVersionUID = -6583078808900520166L;
+  private static final String TYPE_REPOSITORY = "repository";
 
   //~--- constructors ---------------------------------------------------------
 
@@ -55,10 +55,14 @@ public class RepositoryNotFoundException extends NotFoundException
    *
    */
   public RepositoryNotFoundException(Repository repository) {
-    super("repository", repository.getName() + "/"  + repository.getNamespace());
+    super(TYPE_REPOSITORY, repository.getName() + "/"  + repository.getNamespace());
   }
 
   public RepositoryNotFoundException(String repositoryId) {
-    super("repository", repositoryId);
+    super(TYPE_REPOSITORY, repositoryId);
+  }
+
+  public RepositoryNotFoundException(NamespaceAndName namespaceAndName) {
+    super(TYPE_REPOSITORY, namespaceAndName.toString());
   }
 }

scm-core/src/main/java/sonia/scm/repository/RepositoryProvider.java

@@ -26,35 +26,21 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * http://bitbucket.org/sdorra/scm-manager
- *
  */
 
 
-
 package sonia.scm.repository;
 
 //~--- non-JDK imports --------------------------------------------------------
 
 import com.google.inject.throwingproviders.CheckedProvider;
 
-import sonia.scm.security.ScmSecurityException;
-
 /**
  *
  * @author Sebastian Sdorra
  * @since 1.10
  */
-public interface RepositoryProvider extends CheckedProvider<Repository>
+public interface RepositoryProvider extends CheckedProvider<Repository> {
-{
-
-  /**
-   * Method description
-   *
-   *
-   * @return
-   *
-   * @throws ScmSecurityException
-   */
   @Override
-  public Repository get() throws ScmSecurityException;
+  Repository get();
 }

scm-core/src/main/java/sonia/scm/repository/api/Command.java

@@ -61,5 +61,11 @@ public enum Command
   /**
    * @since 1.43
    */
-  BUNDLE, UNBUNDLE;
+  BUNDLE, UNBUNDLE,
+
+  /**
+   * @since 2.0
+   */
+  MODIFICATIONS
+
 }

scm-core/src/main/java/sonia/scm/repository/api/ModificationsCommandBuilder.java

@@ -0,0 +1,113 @@
+package sonia.scm.repository.api;
+
+import lombok.AllArgsConstructor;
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import lombok.Setter;
+import lombok.ToString;
+import lombok.experimental.Accessors;
+import lombok.extern.slf4j.Slf4j;
+import sonia.scm.cache.Cache;
+import sonia.scm.repository.Modifications;
+import sonia.scm.repository.PreProcessorUtil;
+import sonia.scm.repository.Repository;
+import sonia.scm.repository.RepositoryCacheKey;
+import sonia.scm.repository.RevisionNotFoundException;
+import sonia.scm.repository.spi.ModificationsCommand;
+import sonia.scm.repository.spi.ModificationsCommandRequest;
+
+import java.io.IOException;
+
+/**
+ * Get the modifications applied to files in a revision.
+ * <p>
+ * Modifications are for example: Add, Update and Delete
+ *
+ * @author Mohamed Karray
+ * @since 2.0
+ */
+@Slf4j
+@RequiredArgsConstructor
+@Accessors(fluent = true)
+public final class ModificationsCommandBuilder {
+  static final String CACHE_NAME = "sonia.cache.cmd.modifications";
+
+  private final ModificationsCommand modificationsCommand;
+
+  private final ModificationsCommandRequest request = new ModificationsCommandRequest();
+
+  private final Repository repository;
+
+  private final Cache<ModificationsCommandBuilder.CacheKey, Modifications> cache;
+
+  private final PreProcessorUtil preProcessorUtil;
+
+  @Setter
+  private boolean disableEscaping = false;
+
+  @Setter
+  private boolean disableCache = false;
+
+  @Setter
+  private boolean disablePreProcessors = false;
+
+  public ModificationsCommandBuilder revision(String revision){
+    request.setRevision(revision);
+    return this;
+  }
+
+  /**
+   * Reset each parameter to its default value.
+   *
+   *
+   * @return {@code this}
+   */
+  public ModificationsCommandBuilder reset() {
+    request.reset();
+    this.disableCache = false;
+    this.disablePreProcessors = false;
+    return this;
+  }
+
+  public Modifications getModifications() throws IOException, RevisionNotFoundException {
+    Modifications modifications;
+    if (disableCache) {
+      log.info("Get modifications for {} with disabled cache", request);
+      modifications = modificationsCommand.getModifications(request);
+    } else {
+      ModificationsCommandBuilder.CacheKey key = new ModificationsCommandBuilder.CacheKey(repository.getId(), request);
+      if (cache.contains(key)) {
+        modifications = cache.get(key);
+        log.debug("Get modifications for {} from the cache", request);
+      } else {
+        log.info("Get modifications for {} with enabled cache", request);
+        modifications = modificationsCommand.getModifications(request);
+        if (modifications != null) {
+          cache.put(key, modifications);
+          log.debug("Modifications for {} added to the cache with key {}", request, key);
+        }
+      }
+    }
+    if (!disablePreProcessors && (modifications != null)) {
+      preProcessorUtil.prepareForReturn(repository, modifications, !disableEscaping);
+    }
+    return modifications;
+  }
+
+  @AllArgsConstructor
+  @Getter
+  @Setter
+  @EqualsAndHashCode
+  @ToString
+  class CacheKey implements RepositoryCacheKey {
+    private final String repositoryId;
+    private final ModificationsCommandRequest request;
+
+    @Override
+    public String getRepositoryId() {
+      return repositoryId;
+    }
+  }
+
+}

scm-core/src/main/java/sonia/scm/repository/api/RepositoryService.java

@@ -31,6 +31,7 @@
 
 package sonia.scm.repository.api;
 
+import lombok.extern.slf4j.Slf4j;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import sonia.scm.cache.CacheManager;
@@ -42,6 +43,8 @@ import sonia.scm.repository.spi.RepositoryServiceProvider;
 
 import java.io.Closeable;
 import java.io.IOException;
+import java.util.Set;
+import java.util.stream.Stream;
 
 /**
  * From the {@link RepositoryService} it is possible to access all commands for
@@ -78,30 +81,32 @@ import java.io.IOException;
  * @apiviz.uses sonia.scm.repository.api.UnbundleCommandBuilder
  * @since 1.17
  */
+@Slf4j
 public final class RepositoryService implements Closeable {
-  private CacheManager cacheManager;
+
-  private PreProcessorUtil preProcessorUtil;
+  private static final Logger logger = LoggerFactory.getLogger(RepositoryService.class);
-  private RepositoryServiceProvider provider;
+
-  private Repository repository;
+  private final CacheManager cacheManager;
-  private static final Logger logger =
+  private final PreProcessorUtil preProcessorUtil;
-    LoggerFactory.getLogger(RepositoryService.class);
+  private final RepositoryServiceProvider provider;
+  private final Repository repository;
+  private final Set<ScmProtocolProvider> protocolProviders;
 
   /**
    * Constructs a new {@link RepositoryService}. This constructor should only
    * be called from the {@link RepositoryServiceFactory}.
-   *
    *  @param cacheManager     cache manager
    * @param provider         implementation for {@link RepositoryServiceProvider}
    * @param repository       the repository
-   * @param preProcessorUtil
    */
   RepositoryService(CacheManager cacheManager,
     RepositoryServiceProvider provider, Repository repository,
-                    PreProcessorUtil preProcessorUtil) {
+    PreProcessorUtil preProcessorUtil, Set<ScmProtocolProvider> protocolProviders) {
     this.cacheManager = cacheManager;
     this.provider = provider;
     this.repository = repository;
     this.preProcessorUtil = preProcessorUtil;
+    this.protocolProviders = protocolProviders;
   }
 
   /**
@@ -125,7 +130,7 @@ public final class RepositoryService implements Closeable {
     try {
       provider.close();
     } catch (IOException ex) {
-      logger.error("Could not close repository service provider", ex);
+      log.error("Could not close repository service provider", ex);
     }
   }
 
@@ -138,7 +143,7 @@ public final class RepositoryService implements Closeable {
    */
   public BlameCommandBuilder getBlameCommand() {
     logger.debug("create blame command for repository {}",
-      repository.getName());
+      repository.getNamespaceAndName());
 
     return new BlameCommandBuilder(cacheManager, provider.getBlameCommand(),
       repository, preProcessorUtil);
@@ -153,7 +158,7 @@ public final class RepositoryService implements Closeable {
    */
   public BranchesCommandBuilder getBranchesCommand() {
     logger.debug("create branches command for repository {}",
-      repository.getName());
+      repository.getNamespaceAndName());
 
     return new BranchesCommandBuilder(cacheManager,
       provider.getBranchesCommand(), repository);
@@ -168,7 +173,7 @@ public final class RepositoryService implements Closeable {
    */
   public BrowseCommandBuilder getBrowseCommand() {
     logger.debug("create browse command for repository {}",
-      repository.getName());
+      repository.getNamespaceAndName());
 
     return new BrowseCommandBuilder(cacheManager, provider.getBrowseCommand(),
       repository, preProcessorUtil);
@@ -184,7 +189,7 @@ public final class RepositoryService implements Closeable {
    */
   public BundleCommandBuilder getBundleCommand() {
     logger.debug("create bundle command for repository {}",
-      repository.getName());
+      repository.getNamespaceAndName());
 
     return new BundleCommandBuilder(provider.getBundleCommand(), repository);
   }
@@ -198,7 +203,7 @@ public final class RepositoryService implements Closeable {
    */
   public CatCommandBuilder getCatCommand() {
     logger.debug("create cat command for repository {}",
-      repository.getName());
+      repository.getNamespaceAndName());
 
     return new CatCommandBuilder(provider.getCatCommand());
   }
@@ -213,7 +218,7 @@ public final class RepositoryService implements Closeable {
    */
   public DiffCommandBuilder getDiffCommand() {
     logger.debug("create diff command for repository {}",
-      repository.getName());
+      repository.getNamespaceAndName());
 
     return new DiffCommandBuilder(provider.getDiffCommand());
   }
@@ -229,7 +234,7 @@ public final class RepositoryService implements Closeable {
    */
   public IncomingCommandBuilder getIncomingCommand() {
     logger.debug("create incoming command for repository {}",
-      repository.getName());
+      repository.getNamespaceAndName());
 
     return new IncomingCommandBuilder(cacheManager,
       provider.getIncomingCommand(), repository, preProcessorUtil);
@@ -244,12 +249,24 @@ public final class RepositoryService implements Closeable {
    */
   public LogCommandBuilder getLogCommand() {
     logger.debug("create log command for repository {}",
-      repository.getName());
+      repository.getNamespaceAndName());
 
     return new LogCommandBuilder(cacheManager, provider.getLogCommand(),
       repository, preProcessorUtil);
   }
 
+  /**
+   * The modification command shows file modifications in a revision.
+   *
+   * @return instance of {@link ModificationsCommandBuilder}
+   * @throws CommandNotSupportedException if the command is not supported
+   *                                      by the implementation of the repository service provider.
+   */
+  public ModificationsCommandBuilder getModificationsCommand() {
+    logger.debug("create modifications command for repository {}", repository.getNamespaceAndName());
+    return new ModificationsCommandBuilder(provider.getModificationsCommand(),repository, cacheManager.getCache(ModificationsCommandBuilder.CACHE_NAME), preProcessorUtil);
+  }
+
   /**
    * The outgoing command show {@link Changeset}s not found in a remote repository.
    *
@@ -260,7 +277,7 @@ public final class RepositoryService implements Closeable {
    */
   public OutgoingCommandBuilder getOutgoingCommand() {
     logger.debug("create outgoing command for repository {}",
-      repository.getName());
+      repository.getNamespaceAndName());
 
     return new OutgoingCommandBuilder(cacheManager,
       provider.getOutgoingCommand(), repository, preProcessorUtil);
@@ -276,7 +293,7 @@ public final class RepositoryService implements Closeable {
    */
   public PullCommandBuilder getPullCommand() {
     logger.debug("create pull command for repository {}",
-      repository.getName());
+      repository.getNamespaceAndName());
 
     return new PullCommandBuilder(provider.getPullCommand(), repository);
   }
@@ -291,7 +308,7 @@ public final class RepositoryService implements Closeable {
    */
   public PushCommandBuilder getPushCommand() {
     logger.debug("create push command for repository {}",
-      repository.getName());
+      repository.getNamespaceAndName());
 
     return new PushCommandBuilder(provider.getPushCommand());
   }
@@ -314,7 +331,7 @@ public final class RepositoryService implements Closeable {
    */
   public TagsCommandBuilder getTagsCommand() {
     logger.debug("create tags command for repository {}",
-      repository.getName());
+      repository.getNamespaceAndName());
 
     return new TagsCommandBuilder(cacheManager, provider.getTagsCommand(),
       repository);
@@ -330,7 +347,7 @@ public final class RepositoryService implements Closeable {
    */
   public UnbundleCommandBuilder getUnbundleCommand() {
     logger.debug("create unbundle command for repository {}",
-      repository.getName());
+      repository.getNamespaceAndName());
 
     return new UnbundleCommandBuilder(provider.getUnbundleCommand(),
       repository);
@@ -357,5 +374,20 @@ public final class RepositoryService implements Closeable {
     return provider.getSupportedFeatures().contains(feature);
   }
 
-
+  public <T extends ScmProtocol> Stream<T> getSupportedProtocols() {
+    return protocolProviders.stream()
+      .filter(protocolProvider -> protocolProvider.getType().equals(getRepository().getType()))
+      .map(this::<T>createProviderInstanceForRepository);
+  }
+
+  private <T extends ScmProtocol> T createProviderInstanceForRepository(ScmProtocolProvider<T> protocolProvider) {
+    return protocolProvider.get(repository);
+  }
+
+  public <T extends ScmProtocol> T getProtocol(Class<T> clazz) {
+    return this.<T>getSupportedProtocols()
+      .filter(scmProtocol -> clazz.isAssignableFrom(scmProtocol.getClass()))
+      .findFirst()
+      .orElseThrow(() -> new IllegalArgumentException(String.format("no implementation for %s and repository type %s", clazz.getName(),getRepository().getType())));
+  }
 }

scm-core/src/main/java/sonia/scm/repository/api/RepositoryServiceFactory.java

@@ -137,13 +137,15 @@ public final class RepositoryServiceFactory
   @Inject
   public RepositoryServiceFactory(ScmConfiguration configuration,
     CacheManager cacheManager, RepositoryManager repositoryManager,
-    Set<RepositoryServiceResolver> resolvers, PreProcessorUtil preProcessorUtil)
+    Set<RepositoryServiceResolver> resolvers, PreProcessorUtil preProcessorUtil,
+    Set<ScmProtocolProvider> protocolProviders)
   {
     this.configuration = configuration;
     this.cacheManager = cacheManager;
     this.repositoryManager = repositoryManager;
     this.resolvers = resolvers;
     this.preProcessorUtil = preProcessorUtil;
+    this.protocolProviders = protocolProviders;
 
     ScmEventBus.getInstance().register(new CacheClearHook(cacheManager));
   }
@@ -208,9 +210,7 @@ public final class RepositoryServiceFactory
 
     if (repository == null)
     {
-      String msg = "could not find a repository with namespace/name " + namespaceAndName;
+      throw new RepositoryNotFoundException(namespaceAndName);
-
-      throw new RepositoryNotFoundException(msg);
     }
 
     return create(repository);
@@ -254,7 +254,7 @@ public final class RepositoryServiceFactory
         }
 
         service = new RepositoryService(cacheManager, provider, repository,
-          preProcessorUtil);
+          preProcessorUtil, protocolProviders);
 
         break;
       }
@@ -369,4 +369,6 @@ public final class RepositoryServiceFactory
 
   /** service resolvers */
   private final Set<RepositoryServiceResolver> resolvers;
+
+  private Set<ScmProtocolProvider> protocolProviders;
 }

scm-core/src/main/java/sonia/scm/repository/api/ScmProtocol.java

@@ -0,0 +1,19 @@
+package sonia.scm.repository.api;
+
+/**
+ * An ScmProtocol represents a concrete protocol provided by the SCM-Manager instance
+ * to interact with a repository depending on its type. There may be multiple protocols
+ * available for a repository type (eg. http and ssh).
+ */
+public interface ScmProtocol {
+
+  /**
+   * The type of the concrete protocol, eg. "http" or "ssh".
+   */
+  String getType();
+
+  /**
+   * The URL to access the repository providing this protocol.
+   */
+  String getUrl();
+}

scm-core/src/main/java/sonia/scm/repository/api/ScmProtocolProvider.java

@@ -0,0 +1,12 @@
+package sonia.scm.repository.api;
+
+import sonia.scm.plugin.ExtensionPoint;
+import sonia.scm.repository.Repository;
+
+@ExtensionPoint(multi = true)
+public interface ScmProtocolProvider<T extends ScmProtocol> {
+
+  String getType();
+
+  T get(Repository repository);
+}

scm-core/src/main/java/sonia/scm/repository/spi/HttpScmProtocol.java

@@ -0,0 +1,38 @@
+package sonia.scm.repository.spi;
+
+import sonia.scm.repository.Repository;
+import sonia.scm.repository.api.ScmProtocol;
+
+import javax.servlet.ServletConfig;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.net.URI;
+
+public abstract class HttpScmProtocol implements ScmProtocol {
+
+  private final Repository repository;
+  private final String basePath;
+
+  public HttpScmProtocol(Repository repository, String basePath) {
+    this.repository = repository;
+    this.basePath = basePath;
+  }
+
+  @Override
+  public String getType() {
+    return "http";
+  }
+
+  @Override
+  public String getUrl() {
+      return URI.create(basePath + "/").resolve(String.format("repo/%s/%s", repository.getNamespace(), repository.getName())).toASCIIString();
+  }
+
+  public final void serve(HttpServletRequest request, HttpServletResponse response, ServletConfig config) throws ServletException, IOException {
+    serve(request, response, repository, config);
+  }
+
+  protected abstract void serve(HttpServletRequest request, HttpServletResponse response, Repository repository, ServletConfig config) throws ServletException, IOException;
+}

scm-core/src/main/java/sonia/scm/repository/spi/InitializingHttpScmProtocolWrapper.java

@@ -0,0 +1,91 @@
+package sonia.scm.repository.spi;
+
+import lombok.extern.slf4j.Slf4j;
+import sonia.scm.api.v2.resources.ScmPathInfoStore;
+import sonia.scm.config.ScmConfiguration;
+import sonia.scm.repository.Repository;
+import sonia.scm.repository.api.ScmProtocolProvider;
+
+import javax.inject.Provider;
+import javax.servlet.ServletConfig;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.util.Optional;
+
+import static java.util.Optional.empty;
+import static java.util.Optional.of;
+
+@Slf4j
+public abstract class InitializingHttpScmProtocolWrapper implements ScmProtocolProvider<HttpScmProtocol> {
+
+  private final Provider<? extends ScmProviderHttpServlet> delegateProvider;
+  private final Provider<ScmPathInfoStore> pathInfoStore;
+  private final ScmConfiguration scmConfiguration;
+
+  private volatile boolean isInitialized = false;
+
+
+  protected InitializingHttpScmProtocolWrapper(Provider<? extends ScmProviderHttpServlet> delegateProvider, Provider<ScmPathInfoStore> pathInfoStore, ScmConfiguration scmConfiguration) {
+    this.delegateProvider = delegateProvider;
+    this.pathInfoStore = pathInfoStore;
+    this.scmConfiguration = scmConfiguration;
+  }
+
+  protected void initializeServlet(ServletConfig config, ScmProviderHttpServlet httpServlet) throws ServletException {
+    httpServlet.init(config);
+  }
+
+  @Override
+  public HttpScmProtocol get(Repository repository) {
+    if (!repository.getType().equals(getType())) {
+      throw new IllegalArgumentException(String.format("cannot handle repository with type %s with protocol for type %s", repository.getType(), getType()));
+    }
+    return new ProtocolWrapper(repository, computeBasePath());
+  }
+
+  private String computeBasePath() {
+    return getPathFromScmPathInfoIfAvailable().orElse(getPathFromConfiguration());
+  }
+
+  private Optional<String> getPathFromScmPathInfoIfAvailable() {
+    try {
+      ScmPathInfoStore scmPathInfoStore = pathInfoStore.get();
+      if (scmPathInfoStore != null && scmPathInfoStore.get() != null) {
+        return of(scmPathInfoStore.get().getRootUri().toASCIIString());
+      }
+    } catch (Exception e) {
+      log.debug("could not get ScmPathInfoStore from context", e);
+    }
+    return empty();
+  }
+
+  private String getPathFromConfiguration() {
+    log.debug("using base path from configuration: {}", scmConfiguration.getBaseUrl());
+    return scmConfiguration.getBaseUrl();
+  }
+
+  private class ProtocolWrapper extends HttpScmProtocol {
+
+    public ProtocolWrapper(Repository repository, String basePath) {
+      super(repository, basePath);
+    }
+
+    @Override
+    protected void serve(HttpServletRequest request, HttpServletResponse response, Repository repository, ServletConfig config) throws ServletException, IOException {
+      if (!isInitialized) {
+        synchronized (InitializingHttpScmProtocolWrapper.this) {
+          if (!isInitialized) {
+            ScmProviderHttpServlet httpServlet = delegateProvider.get();
+            initializeServlet(config, httpServlet);
+            isInitialized = true;
+          }
+        }
+      }
+
+      delegateProvider.get().service(request, response, repository);
+    }
+
+  }
+}

scm-core/src/main/java/sonia/scm/repository/spi/ModificationsCommand.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2010, Sebastian Sdorra
  * All rights reserved.
  *
@@ -29,32 +29,25 @@
  *
  */
 
+package sonia.scm.repository.spi;
 
-package sonia.scm.repository;
+import sonia.scm.repository.Modifications;
+import sonia.scm.repository.RevisionNotFoundException;
 
-import org.junit.Test;
+import java.io.IOException;
-
-import static org.junit.Assert.assertEquals;
 
 /**
+ * Command to get the modifications applied to files in a revision.
  *
- * @author Sebastian Sdorra
+ * Modifications are for example: Add, Update, Delete
- */
-public class RepositoryTest
-{
-
-  /**
-   * Method description
  *
+ * @author Mohamed Karray
+ * @since 2.0
  */
-  @Test
+public interface ModificationsCommand {
-  public void testCreateUrl()
+
-  {
+  Modifications getModifications(String revision) throws IOException, RevisionNotFoundException;
-    Repository repository = new Repository("123", "hg", "test", "repo");
+
+  Modifications getModifications(ModificationsCommandRequest request) throws IOException, RevisionNotFoundException;
 
-    assertEquals("http://localhost:8080/scm/hg/test/repo",
-                 repository.createUrl("http://localhost:8080/scm"));
-    assertEquals("http://localhost:8080/scm/hg/test/repo",
-                 repository.createUrl("http://localhost:8080/scm/"));
-  }
 }

scm-core/src/main/java/sonia/scm/repository/spi/ModificationsCommandRequest.java

@@ -0,0 +1,24 @@
+package sonia.scm.repository.spi;
+
+
+import lombok.AllArgsConstructor;
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+import lombok.ToString;
+
+@ToString
+@EqualsAndHashCode
+@Getter
+@Setter
+@AllArgsConstructor
+@NoArgsConstructor
+public class ModificationsCommandRequest implements Resetable {
+  private String revision;
+
+  @Override
+  public void reset() {
+    revision = null;
+  }
+}

scm-core/src/main/java/sonia/scm/repository/spi/RepositoryServiceProvider.java

@@ -33,20 +33,17 @@
 
 package sonia.scm.repository.spi;
 
-//~--- non-JDK imports --------------------------------------------------------
-
 import sonia.scm.repository.Feature;
 import sonia.scm.repository.api.Command;
 import sonia.scm.repository.api.CommandNotSupportedException;
 
-//~--- JDK imports ------------------------------------------------------------
-
 import java.io.Closeable;
 import java.io.IOException;
-
 import java.util.Collections;
 import java.util.Set;
 
+//~--- JDK imports ------------------------------------------------------------
+
 /**
  *
  * @author Sebastian Sdorra
@@ -173,6 +170,16 @@ public abstract class RepositoryServiceProvider implements Closeable
     throw new CommandNotSupportedException(Command.LOG);
   }
 
+  /**
+   * Get the corresponding {@link ModificationsCommand} implemented from the Plugins
+   *
+   * @return the corresponding {@link ModificationsCommand} implemented from the Plugins
+   * @throws CommandNotSupportedException if there is no Implementation
+   */
+  public ModificationsCommand getModificationsCommand() {
+    throw new CommandNotSupportedException(Command.MODIFICATIONS);
+  }
+
   /**
    * Method description
    *

scm-core/src/main/java/sonia/scm/repository/spi/ScmProviderHttpServlet.java

@@ -0,0 +1,16 @@
+package sonia.scm.repository.spi;
+
+import sonia.scm.repository.Repository;
+
+import javax.servlet.ServletConfig;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+public interface ScmProviderHttpServlet {
+
+  void service(HttpServletRequest request, HttpServletResponse response, Repository repository) throws ServletException, IOException;
+
+  void init(ServletConfig config) throws ServletException;
+}

scm-core/src/main/java/sonia/scm/repository/spi/ScmProviderHttpServletDecorator.java

@@ -0,0 +1,28 @@
+package sonia.scm.repository.spi;
+
+import sonia.scm.repository.Repository;
+
+import javax.servlet.ServletConfig;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+public class ScmProviderHttpServletDecorator implements ScmProviderHttpServlet {
+
+  private final ScmProviderHttpServlet object;
+
+  public ScmProviderHttpServletDecorator(ScmProviderHttpServlet object) {
+    this.object = object;
+  }
+
+  @Override
+  public void service(HttpServletRequest request, HttpServletResponse response, Repository repository) throws ServletException, IOException {
+    object.service(request, response, repository);
+  }
+
+  @Override
+  public void init(ServletConfig config) throws ServletException {
+    object.init(config);
+  }
+}

scm-core/src/main/java/sonia/scm/repository/spi/ScmProviderHttpServletDecoratorFactory.java

@@ -0,0 +1,15 @@
+package sonia.scm.repository.spi;
+
+import sonia.scm.DecoratorFactory;
+import sonia.scm.plugin.ExtensionPoint;
+
+@ExtensionPoint
+public interface ScmProviderHttpServletDecoratorFactory extends DecoratorFactory<ScmProviderHttpServlet> {
+  /**
+   * Has to return <code>true</code> if this factory provides a decorator for the given scm type (eg. "git", "hg" or
+   * "svn").
+   * @param type The current scm type this factory can provide a decorator for.
+   * @return <code>true</code> when the provided decorator should be used for the given scm type.
+   */
+  boolean handlesScmType(String type);
+}

scm-core/src/main/java/sonia/scm/repository/spi/ScmProviderHttpServletProvider.java

@@ -0,0 +1,33 @@
+package sonia.scm.repository.spi;
+
+import com.google.inject.Inject;
+import sonia.scm.util.Decorators;
+
+import javax.inject.Provider;
+import java.util.List;
+import java.util.Set;
+
+import static java.util.stream.Collectors.toList;
+
+public abstract class ScmProviderHttpServletProvider implements Provider<ScmProviderHttpServlet> {
+
+  @Inject(optional = true)
+  private Set<ScmProviderHttpServletDecoratorFactory> decoratorFactories;
+
+  private final String type;
+
+  protected ScmProviderHttpServletProvider(String type) {
+    this.type = type;
+  }
+
+  @Override
+  public ScmProviderHttpServlet get() {
+    return Decorators.decorate(getRootServlet(), getDecoratorsForType());
+  }
+
+  private List<ScmProviderHttpServletDecoratorFactory> getDecoratorsForType() {
+    return decoratorFactories.stream().filter(d -> d.handlesScmType(type)).collect(toList());
+  }
+
+  protected abstract ScmProviderHttpServlet getRootServlet();
+}

scm-core/src/main/java/sonia/scm/util/Decorators.java

@@ -37,7 +37,6 @@ package sonia.scm.util;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
-
 import sonia.scm.DecoratorFactory;
 
 /**

scm-core/src/main/java/sonia/scm/web/VndMediaType.java

@@ -21,6 +21,7 @@ public class VndMediaType {
   public static final String PERMISSION = PREFIX + "permission" + SUFFIX;
   public static final String CHANGESET = PREFIX + "changeset" + SUFFIX;
   public static final String CHANGESET_COLLECTION = PREFIX + "changesetCollection" + SUFFIX;
+  public static final String MODIFICATIONS = PREFIX + "modifications" + SUFFIX;;
   public static final String TAG = PREFIX + "tag" + SUFFIX;
   public static final String TAG_COLLECTION = PREFIX + "tagCollection" + SUFFIX;
   public static final String BRANCH = PREFIX + "branch" + SUFFIX;

scm-core/src/main/java/sonia/scm/web/filter/PermissionFilter.java

@@ -33,39 +33,32 @@
 
 package sonia.scm.web.filter;
 
-//~--- non-JDK imports --------------------------------------------------------
-
-import com.google.common.base.Splitter;
 import org.apache.shiro.SecurityUtils;
 import org.apache.shiro.authz.AuthorizationException;
 import org.apache.shiro.subject.Subject;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
-import sonia.scm.ArgumentIsInvalidException;
 import sonia.scm.SCMContext;
 import sonia.scm.config.ScmConfiguration;
 import sonia.scm.repository.Repository;
 import sonia.scm.repository.RepositoryPermissions;
+import sonia.scm.repository.spi.ScmProviderHttpServlet;
+import sonia.scm.repository.spi.ScmProviderHttpServletDecorator;
 import sonia.scm.security.Role;
 import sonia.scm.security.ScmSecurityException;
 import sonia.scm.util.HttpUtil;
-import sonia.scm.util.Util;
 
-import javax.servlet.FilterChain;
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
-import java.util.Iterator;
-
-//~--- JDK imports ------------------------------------------------------------
 
 /**
  * Abstract http filter to check repository permissions.
  *
  * @author Sebastian Sdorra
  */
-public abstract class PermissionFilter extends HttpFilter
+public abstract class PermissionFilter extends ScmProviderHttpServletDecorator
 {
 
   /** the logger for PermissionFilter */
@@ -81,23 +74,14 @@ public abstract class PermissionFilter extends HttpFilter
    *
    * @since 1.21
    */
-  public PermissionFilter(ScmConfiguration configuration)
+  protected PermissionFilter(ScmConfiguration configuration, ScmProviderHttpServlet delegate)
   {
+    super(delegate);
     this.configuration = configuration;
   }
 
   //~--- get methods ----------------------------------------------------------
 
-  /**
-   * Returns the requested repository.
-   *
-   *
-   * @param request current http request
-   *
-   * @return requested repository
-   */
-  protected abstract Repository getRepository(HttpServletRequest request);
-
   /**
    * Returns true if the current request is a write request.
    *
@@ -117,23 +101,18 @@ public abstract class PermissionFilter extends HttpFilter
    *
    * @param request http request
    * @param response http response
-   * @param chain filter chain
    *
    * @throws IOException
    * @throws ServletException
    */
   @Override
-  protected void doFilter(HttpServletRequest request,
+  public void service(HttpServletRequest request,
-    HttpServletResponse response, FilterChain chain)
+    HttpServletResponse response, Repository repository)
     throws IOException, ServletException
   {
     Subject subject = SecurityUtils.getSubject();
 
     try
-    {
-      Repository repository = getRepository(request);
-
-      if (repository != null)
     {
       boolean writeRequest = isWriteRequest(request);
 
@@ -143,7 +122,7 @@ public abstract class PermissionFilter extends HttpFilter
           getActionAsString(writeRequest), repository.getName(),
           getUserName(subject));
 
-          chain.doFilter(request, response);
+        super.service(request, response, repository);
       }
       else
       {
@@ -154,29 +133,6 @@ public abstract class PermissionFilter extends HttpFilter
         sendAccessDenied(request, response, subject);
       }
     }
-      else
-      {
-        logger.debug("repository not found");
-
-        response.sendError(HttpServletResponse.SC_NOT_FOUND);
-      }
-    }
-    catch (ArgumentIsInvalidException ex)
-    {
-      if (logger.isTraceEnabled())
-      {
-        logger.trace(
-          "wrong request at ".concat(request.getRequestURI()).concat(
-            " send redirect"), ex);
-      }
-      else if (logger.isWarnEnabled())
-      {
-        logger.warn("wrong request at {} send redirect",
-          request.getRequestURI());
-      }
-
-      response.sendRedirect(getRepositoryRootHelpUrl(request));
-    }
     catch (ScmSecurityException | AuthorizationException ex)
     {
       logger.warn("user " + subject.getPrincipal() +  " has not enough permissions", ex);
@@ -217,29 +173,6 @@ public abstract class PermissionFilter extends HttpFilter
     HttpUtil.sendUnauthorized(response, configuration.getRealmDescription());
   }
 
-  /**
-   * Extracts the type of the repositroy from url.
-   *
-   *
-   * @param request http request
-   *
-   * @return type of repository
-   */
-  private String extractType(HttpServletRequest request)
-  {
-    Iterator<String> it = Splitter.on(
-                            HttpUtil.SEPARATOR_PATH).omitEmptyStrings().split(
-                            request.getRequestURI()).iterator();
-    String type = it.next();
-
-    if (Util.isNotEmpty(request.getContextPath()))
-    {
-      type = it.next();
-    }
-
-    return type;
-  }
-
   /**
    * Send access denied to the servlet response.
    *
@@ -280,25 +213,6 @@ public abstract class PermissionFilter extends HttpFilter
       : "read";
   }
 
-  /**
-   * Returns the repository root help url.
-   *
-   *
-   * @param request current http request
-   *
-   * @return repository root help url
-   */
-  private String getRepositoryRootHelpUrl(HttpServletRequest request)
-  {
-    String type = extractType(request);
-    String helpUrl = HttpUtil.getCompleteUrl(request,
-                       "/api/rest/help/repository-root/");
-
-    helpUrl = helpUrl.concat(type).concat(".html");
-
-    return helpUrl;
-  }
-
   /**
    * Returns the username from the given subject or anonymous.
    *

scm-core/src/main/java/sonia/scm/web/filter/ProviderPermissionFilter.java

@@ -1,118 +0,0 @@
-/**
- * Copyright (c) 2010, Sebastian Sdorra
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- * 3. Neither the name of SCM-Manager; nor the names of its
- *    contributors may be used to endorse or promote products derived from this
- *    software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * http://bitbucket.org/sdorra/scm-manager
- *
- */
-
-
-
-package sonia.scm.web.filter;
-
-//~--- non-JDK imports --------------------------------------------------------
-
-import com.google.common.base.Throwables;
-import com.google.inject.ProvisionException;
-
-import org.apache.shiro.authz.AuthorizationException;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import sonia.scm.config.ScmConfiguration;
-import sonia.scm.repository.Repository;
-import sonia.scm.repository.RepositoryProvider;
-
-//~--- JDK imports ------------------------------------------------------------
-
-import javax.servlet.http.HttpServletRequest;
-
-/**
- *
- * @author Sebastian Sdorra
- * @since 1.9
- */
-public abstract class ProviderPermissionFilter extends PermissionFilter
-{
-
-  /**
-   * the logger for ProviderPermissionFilter
-   */
-  private static final Logger logger =
-    LoggerFactory.getLogger(ProviderPermissionFilter.class);
-
-  //~--- constructors ---------------------------------------------------------
-
-  /**
-   * Constructs ...
-   *
-   *
-   * @param configuration
-   * @param repositoryProvider
-   * @since 1.21
-   */
-  public ProviderPermissionFilter(ScmConfiguration configuration,
-    RepositoryProvider repositoryProvider)
-  {
-    super(configuration);
-    this.repositoryProvider = repositoryProvider;
-  }
-
-  //~--- get methods ----------------------------------------------------------
-
-  /**
-   * Method description
-   *
-   *
-   * @param request
-   *
-   * @return
-   */
-  @Override
-  protected Repository getRepository(HttpServletRequest request)
-  {
-    Repository repository = null;
-
-    try
-    {
-      repository = repositoryProvider.get();
-    }
-    catch (ProvisionException ex)
-    {
-      Throwables.propagateIfPossible(ex.getCause(),
-        IllegalStateException.class, AuthorizationException.class);
-      logger.error("could not get repository from request", ex);
-    }
-
-    return repository;
-  }
-
-  //~--- fields ---------------------------------------------------------------
-
-  /** Field description */
-  private final RepositoryProvider repositoryProvider;
-}

scm-core/src/test/java/sonia/scm/repository/api/RepositoryServiceTest.java

@@ -0,0 +1,74 @@
+package sonia.scm.repository.api;
+
+import org.junit.Test;
+import sonia.scm.repository.Repository;
+import sonia.scm.repository.spi.HttpScmProtocol;
+import sonia.scm.repository.spi.RepositoryServiceProvider;
+
+import javax.servlet.ServletConfig;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.util.Collections;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
+import static org.assertj.core.util.IterableUtil.sizeOf;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.mockito.Mockito.mock;
+
+public class RepositoryServiceTest {
+
+  private final RepositoryServiceProvider provider = mock(RepositoryServiceProvider.class);
+  private final Repository repository = new Repository("", "git", "space", "repo");
+
+  @Test
+  public void shouldReturnMatchingProtocolsFromProvider() {
+    RepositoryService repositoryService = new RepositoryService(null, provider, repository, null, Collections.singleton(new DummyScmProtocolProvider()));
+    Stream<ScmProtocol> supportedProtocols = repositoryService.getSupportedProtocols();
+
+    assertThat(sizeOf(supportedProtocols.collect(Collectors.toList()))).isEqualTo(1);
+  }
+
+  @Test
+  public void shouldFindKnownProtocol() {
+    RepositoryService repositoryService = new RepositoryService(null, provider, repository, null, Collections.singleton(new DummyScmProtocolProvider()));
+
+    HttpScmProtocol protocol = repositoryService.getProtocol(HttpScmProtocol.class);
+
+    assertThat(protocol).isNotNull();
+  }
+
+  @Test
+  public void shouldFailForUnknownProtocol() {
+    RepositoryService repositoryService = new RepositoryService(null, provider, repository, null, Collections.singleton(new DummyScmProtocolProvider()));
+
+    assertThrows(IllegalArgumentException.class, () -> {
+      repositoryService.getProtocol(UnknownScmProtocol.class);
+    });
+  }
+
+  private static class DummyHttpProtocol extends HttpScmProtocol {
+    public DummyHttpProtocol(Repository repository) {
+      super(repository, "");
+    }
+
+    @Override
+    public void serve(HttpServletRequest request, HttpServletResponse response, Repository repository, ServletConfig config) {
+    }
+  }
+
+  private static class DummyScmProtocolProvider implements ScmProtocolProvider {
+    @Override
+    public String getType() {
+      return "git";
+    }
+
+    @Override
+    public ScmProtocol get(Repository repository) {
+      return new DummyHttpProtocol(repository);
+    }
+  }
+
+  private interface UnknownScmProtocol extends ScmProtocol {}
+}

scm-core/src/test/java/sonia/scm/repository/spi/HttpScmProtocolTest.java

@@ -0,0 +1,40 @@
+package sonia.scm.repository.spi;
+
+import org.junit.jupiter.api.DynamicTest;
+import org.junit.jupiter.api.TestFactory;
+import sonia.scm.repository.Repository;
+
+import javax.servlet.ServletConfig;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.util.stream.Stream;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class HttpScmProtocolTest {
+
+  @TestFactory
+  Stream<DynamicTest> shouldCreateCorrectUrlsWithContextPath() {
+    return Stream.of("http://localhost/scm", "http://localhost/scm/")
+      .map(url -> assertResultingUrl(url, "http://localhost/scm/repo/space/name"));
+  }
+
+  @TestFactory
+  Stream<DynamicTest> shouldCreateCorrectUrlsWithPort() {
+    return Stream.of("http://localhost:8080", "http://localhost:8080/")
+      .map(url -> assertResultingUrl(url, "http://localhost:8080/repo/space/name"));
+  }
+
+  DynamicTest assertResultingUrl(String baseUrl, String expectedUrl) {
+    String actualUrl = createInstanceOfHttpScmProtocol(baseUrl).getUrl();
+    return DynamicTest.dynamicTest(baseUrl + " -> " + expectedUrl, () -> assertThat(actualUrl).isEqualTo(expectedUrl));
+  }
+
+  private HttpScmProtocol createInstanceOfHttpScmProtocol(String baseUrl) {
+    return new HttpScmProtocol(new Repository("", "", "space", "name"), baseUrl) {
+      @Override
+      protected void serve(HttpServletRequest request, HttpServletResponse response, Repository repository, ServletConfig config) {
+      }
+    };
+  }
+}

scm-core/src/test/java/sonia/scm/repository/spi/InitializingHttpScmProtocolWrapperTest.java

@@ -0,0 +1,120 @@
+package sonia.scm.repository.spi;
+
+import com.google.inject.ProvisionException;
+import com.google.inject.util.Providers;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.stubbing.OngoingStubbing;
+import sonia.scm.api.v2.resources.ScmPathInfo;
+import sonia.scm.api.v2.resources.ScmPathInfoStore;
+import sonia.scm.config.ScmConfiguration;
+import sonia.scm.repository.Repository;
+
+import javax.inject.Provider;
+import javax.servlet.ServletConfig;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.net.URI;
+
+import static org.junit.Assert.assertEquals;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+import static org.mockito.MockitoAnnotations.initMocks;
+
+public class InitializingHttpScmProtocolWrapperTest {
+
+  private static final Repository REPOSITORY = new Repository("", "git", "space", "name");
+
+  @Mock
+  private ScmProviderHttpServlet delegateServlet;
+  @Mock
+  private ScmPathInfoStore pathInfoStore;
+  @Mock
+  private ScmConfiguration scmConfiguration;
+  private Provider<ScmPathInfoStore> pathInfoStoreProvider;
+
+  @Mock
+  private HttpServletRequest request;
+  @Mock
+  private HttpServletResponse response;
+  @Mock
+  private ServletConfig servletConfig;
+
+  private InitializingHttpScmProtocolWrapper wrapper;
+
+  @Before
+  public void init() {
+    initMocks(this);
+    pathInfoStoreProvider = mock(Provider.class);
+    when(pathInfoStoreProvider.get()).thenReturn(pathInfoStore);
+
+    wrapper = new InitializingHttpScmProtocolWrapper(Providers.of(this.delegateServlet), pathInfoStoreProvider, scmConfiguration) {
+      @Override
+      public String getType() {
+        return "git";
+      }
+    };
+    when(scmConfiguration.getBaseUrl()).thenReturn("http://example.com/scm");
+  }
+
+  @Test
+  public void shouldUsePathFromPathInfo() {
+    mockSetPathInfo();
+
+    HttpScmProtocol httpScmProtocol = wrapper.get(REPOSITORY);
+
+    assertEquals("http://example.com/scm/repo/space/name", httpScmProtocol.getUrl());
+  }
+
+  @Test
+  public void shouldUseConfigurationWhenPathInfoNotSet() {
+    HttpScmProtocol httpScmProtocol = wrapper.get(REPOSITORY);
+
+    assertEquals("http://example.com/scm/repo/space/name", httpScmProtocol.getUrl());
+  }
+
+  @Test
+  public void shouldUseConfigurationWhenNotInRequestScope() {
+    when(pathInfoStoreProvider.get()).thenThrow(new ProvisionException("test"));
+
+    HttpScmProtocol httpScmProtocol = wrapper.get(REPOSITORY);
+
+    assertEquals("http://example.com/scm/repo/space/name", httpScmProtocol.getUrl());
+  }
+
+  @Test
+  public void shouldInitializeAndDelegateRequestThroughFilter() throws ServletException, IOException {
+    HttpScmProtocol httpScmProtocol = wrapper.get(REPOSITORY);
+
+    httpScmProtocol.serve(request, response, servletConfig);
+
+    verify(delegateServlet).init(servletConfig);
+    verify(delegateServlet).service(request, response, REPOSITORY);
+  }
+
+  @Test
+  public void shouldInitializeOnlyOnce() throws ServletException, IOException {
+    HttpScmProtocol httpScmProtocol = wrapper.get(REPOSITORY);
+
+    httpScmProtocol.serve(request, response, servletConfig);
+    httpScmProtocol.serve(request, response, servletConfig);
+
+    verify(delegateServlet, times(1)).init(servletConfig);
+    verify(delegateServlet, times(2)).service(request, response, REPOSITORY);
+  }
+
+  @Test(expected = IllegalArgumentException.class)
+  public void shouldFailForIllegalScmType() {
+    HttpScmProtocol httpScmProtocol = wrapper.get(new Repository("", "other", "space", "name"));
+  }
+
+  private OngoingStubbing<ScmPathInfo> mockSetPathInfo() {
+    return when(pathInfoStore.get()).thenReturn(() -> URI.create("http://example.com/scm/api/rest/"));
+  }
+
+}

scm-core/src/test/java/sonia/scm/web/filter/PermissionFilterTest.java

@@ -0,0 +1,74 @@
+package sonia.scm.web.filter;
+
+import com.github.sdorra.shiro.ShiroRule;
+import com.github.sdorra.shiro.SubjectAware;
+import org.junit.Rule;
+import org.junit.Test;
+import sonia.scm.config.ScmConfiguration;
+import sonia.scm.repository.Repository;
+import sonia.scm.repository.spi.ScmProviderHttpServlet;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+
+@SubjectAware(configuration = "classpath:sonia/scm/shiro.ini")
+public class PermissionFilterTest {
+
+  public static final Repository REPOSITORY = new Repository("1", "git", "space", "name");
+
+  @Rule
+  public final ShiroRule shiroRule = new ShiroRule();
+
+  private final ScmProviderHttpServlet delegateServlet = mock(ScmProviderHttpServlet.class);
+
+  private final PermissionFilter permissionFilter = new PermissionFilter(new ScmConfiguration(), delegateServlet) {
+    @Override
+    protected boolean isWriteRequest(HttpServletRequest request) {
+      return writeRequest;
+    }
+  };
+
+  private final HttpServletRequest request = mock(HttpServletRequest.class);
+  private final HttpServletResponse response = mock(HttpServletResponse.class);
+
+  private boolean writeRequest = false;
+
+  @Test
+  @SubjectAware(username = "reader", password = "secret")
+  public void shouldPassForReaderOnReadRequest() throws IOException, ServletException {
+    writeRequest = false;
+
+    permissionFilter.service(request, response, REPOSITORY);
+
+    verify(delegateServlet).service(request, response, REPOSITORY);
+  }
+
+  @Test
+  @SubjectAware(username = "reader", password = "secret")
+  public void shouldBlockForReaderOnWriteRequest() throws IOException, ServletException {
+    writeRequest = true;
+
+    permissionFilter.service(request, response, REPOSITORY);
+
+    verify(response).sendError(eq(401), anyString());
+    verify(delegateServlet, never()).service(request, response, REPOSITORY);
+  }
+
+  @Test
+  @SubjectAware(username = "writer", password = "secret")
+  public void shouldPassForWriterOnWriteRequest() throws IOException, ServletException {
+    writeRequest = true;
+
+    permissionFilter.service(request, response, REPOSITORY);
+
+    verify(delegateServlet).service(request, response, REPOSITORY);
+  }
+}

scm-core/src/test/resources/sonia/scm/shiro.ini

@@ -1,6 +1,12 @@
 [users]
 trillian = secret, user
+admin = secret, admin
+writer = secret, repo_write
+reader = secret, repo_read
+unpriv = secret
 
 [roles]
 admin = *
 user = something:*
+repo_read = "repository:read:1"
+repo_write = "repository:push:1"

scm-it/src/test/java/sonia/scm/it/RepositoryAccessITCase.java

@@ -3,6 +3,8 @@ package sonia.scm.it;
 import io.restassured.response.ExtractableResponse;
 import io.restassured.response.Response;
 import org.apache.http.HttpStatus;
+import org.assertj.core.util.Lists;
+import org.assertj.core.util.Maps;
 import org.junit.Assume;
 import org.junit.Before;
 import org.junit.Rule;
@@ -17,8 +19,11 @@ import sonia.scm.web.VndMediaType;
 
 import java.io.File;
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.Collection;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 
 import static java.lang.Thread.sleep;
 import static org.assertj.core.api.Assertions.assertThat;
@@ -312,5 +317,163 @@ public class RepositoryAccessITCase {
         }
       );
   }
+
+  @Test
+  @SuppressWarnings("unchecked")
+  public void shouldFindAddedModifications() throws IOException {
+    RepositoryClient repositoryClient = RepositoryUtil.createRepositoryClient(repositoryType, folder);
+    String fileName = "a.txt";
+    Changeset changeset = RepositoryUtil.createAndCommitFile(repositoryClient, ADMIN_USERNAME, fileName, "a");
+    String revision = changeset.getId();
+    repositoryGetRequest
+      .usingRepositoryResponse()
+      .requestChangesets()
+      .assertStatusCode(HttpStatus.SC_OK)
+      .usingChangesetsResponse()
+      .requestModifications(revision)
+      .assertStatusCode(HttpStatus.SC_OK)
+      .usingModificationsResponse()
+      .assertRevision(actualRevision -> assertThat(actualRevision).isEqualTo(revision))
+      .assertAdded(addedFiles -> assertThat(addedFiles)
+        .hasSize(1)
+        .containsExactly(fileName))
+      .assertRemoved(removedFiles -> assertThat(removedFiles)
+        .hasSize(0))
+      .assertModified(files -> assertThat(files)
+        .hasSize(0));
+  }
+
+  @Test
+  @SuppressWarnings("unchecked")
+  public void shouldFindRemovedModifications() throws IOException {
+    RepositoryClient repositoryClient = RepositoryUtil.createRepositoryClient(repositoryType, folder);
+    String fileName = "a.txt";
+    RepositoryUtil.createAndCommitFile(repositoryClient, ADMIN_USERNAME, fileName, "a");
+    Changeset changeset = RepositoryUtil.removeAndCommitFile(repositoryClient, ADMIN_USERNAME, fileName);
+
+    String revision = changeset.getId();
+    repositoryGetRequest
+      .usingRepositoryResponse()
+      .requestChangesets()
+      .assertStatusCode(HttpStatus.SC_OK)
+      .usingChangesetsResponse()
+      .requestModifications(revision)
+      .assertStatusCode(HttpStatus.SC_OK)
+      .usingModificationsResponse()
+      .assertRevision(actualRevision -> assertThat(actualRevision).isEqualTo(revision))
+      .assertRemoved(removedFiles -> assertThat(removedFiles)
+        .hasSize(1)
+        .containsExactly(fileName))
+      .assertAdded(addedFiles -> assertThat(addedFiles)
+        .hasSize(0))
+      .assertModified(files -> assertThat(files)
+        .hasSize(0));
+  }
+
+  @Test
+  @SuppressWarnings("unchecked")
+  public void shouldFindUpdateModifications() throws IOException {
+    RepositoryClient repositoryClient = RepositoryUtil.createRepositoryClient(repositoryType, folder);
+    String fileName = "a.txt";
+    RepositoryUtil.createAndCommitFile(repositoryClient, ADMIN_USERNAME, fileName, "a");
+    Changeset changeset = RepositoryUtil.createAndCommitFile(repositoryClient, ADMIN_USERNAME, fileName, "new Content");
+
+    String revision = changeset.getId();
+    repositoryGetRequest
+      .usingRepositoryResponse()
+      .requestChangesets()
+      .assertStatusCode(HttpStatus.SC_OK)
+      .usingChangesetsResponse()
+      .requestModifications(revision)
+      .assertStatusCode(HttpStatus.SC_OK)
+      .usingModificationsResponse()
+      .assertRevision(actualRevision -> assertThat(actualRevision).isEqualTo(revision))
+      .assertModified(modifiedFiles -> assertThat(modifiedFiles)
+        .hasSize(1)
+        .containsExactly(fileName))
+      .assertRemoved(removedFiles -> assertThat(removedFiles)
+        .hasSize(0))
+      .assertAdded(addedFiles -> assertThat(addedFiles)
+        .hasSize(0));
+  }
+
+  @Test
+  @SuppressWarnings("unchecked")
+  public void shouldFindMultipleModifications() throws IOException {
+    RepositoryClient repositoryClient = RepositoryUtil.createRepositoryClient(repositoryType, folder);
+    RepositoryUtil.createAndCommitFile(repositoryClient, ADMIN_USERNAME, "b.txt", "b");
+    RepositoryUtil.createAndCommitFile(repositoryClient, ADMIN_USERNAME, "c.txt", "c");
+    RepositoryUtil.createAndCommitFile(repositoryClient, ADMIN_USERNAME, "d.txt", "d");
+    Map<String, String> addedFiles = new HashMap<String, String>()
+    {{
+      put("a.txt", "bla bla");
+    }};
+    Map<String, String> modifiedFiles = new HashMap<String, String>()
+    {{
+      put("b.txt", "new content");
+    }};
+    ArrayList<String> removedFiles = Lists.newArrayList("c.txt", "d.txt");
+    Changeset changeset = RepositoryUtil.commitMultipleFileModifications(repositoryClient, ADMIN_USERNAME, addedFiles, modifiedFiles, removedFiles);
+
+    String revision = changeset.getId();
+    repositoryGetRequest
+      .usingRepositoryResponse()
+      .requestChangesets()
+      .assertStatusCode(HttpStatus.SC_OK)
+      .usingChangesetsResponse()
+      .requestModifications(revision)
+      .assertStatusCode(HttpStatus.SC_OK)
+      .usingModificationsResponse()
+      .assertRevision(actualRevision -> assertThat(actualRevision).isEqualTo(revision))
+      .assertAdded(a -> assertThat(a)
+        .hasSize(1)
+        .containsExactly("a.txt"))
+      .assertModified(m-> assertThat(m)
+        .hasSize(1)
+        .containsExactly("b.txt"))
+      .assertRemoved(r -> assertThat(r)
+        .hasSize(2)
+        .containsExactly("c.txt", "d.txt"));
+  }
+
+  @Test
+  @SuppressWarnings("unchecked")
+  public void svnShouldCreateOneModificationPerFolder() throws IOException {
+    Assume.assumeThat(repositoryType, equalTo("svn"));
+    RepositoryClient repositoryClient = RepositoryUtil.createRepositoryClient(repositoryType, folder);
+    RepositoryUtil.createAndCommitFile(repositoryClient, ADMIN_USERNAME, "bbb/bb/b.txt", "b");
+    RepositoryUtil.createAndCommitFile(repositoryClient, ADMIN_USERNAME, "ccc/cc/c.txt", "c");
+    RepositoryUtil.createAndCommitFile(repositoryClient, ADMIN_USERNAME, "ddd/dd/d.txt", "d");
+    Map<String, String> addedFiles = new HashMap<String, String>()
+    {{
+      put("aaa/aa/a.txt", "bla bla");
+    }};
+    Map<String, String> modifiedFiles = new HashMap<String, String>()
+    {{
+      put("bbb/bb/b.txt", "new content");
+    }};
+    ArrayList<String> removedFiles = Lists.newArrayList("ccc/cc/c.txt", "ddd/dd/d.txt");
+    Changeset changeset = RepositoryUtil.commitMultipleFileModifications(repositoryClient, ADMIN_USERNAME, addedFiles, modifiedFiles, removedFiles);
+
+    String revision = changeset.getId();
+    repositoryGetRequest
+      .usingRepositoryResponse()
+      .requestChangesets()
+      .assertStatusCode(HttpStatus.SC_OK)
+      .usingChangesetsResponse()
+      .requestModifications(revision)
+      .assertStatusCode(HttpStatus.SC_OK)
+      .usingModificationsResponse()
+      .assertRevision(actualRevision -> assertThat(actualRevision).isEqualTo(revision))
+      .assertAdded(a -> assertThat(a)
+        .hasSize(3)
+        .containsExactly("aaa/aa/a.txt", "aaa", "aaa/aa"))
+      .assertModified(m-> assertThat(m)
+        .hasSize(1)
+        .containsExactly("bbb/bb/b.txt"))
+      .assertRemoved(r -> assertThat(r)
+        .hasSize(2)
+        .containsExactly("ccc/cc/c.txt", "ddd/dd/d.txt"));
+  }
 }
 

scm-it/src/test/java/sonia/scm/it/RepositoryRequests.java

@@ -156,7 +156,7 @@ public class RepositoryRequests {
       return new AppliedGetSourcesRequest(getResponseFromLink(repositoryResponse, "_links.sources.href"));
     }
 
-    AppliedGetChangesetsRequest requestChangesets(String fileName) {
+    AppliedGetChangesetsRequest requestChangesets() {
       return new AppliedGetChangesetsRequest(getResponseFromLink(repositoryResponse, "_links.changesets.href"));
     }
   }
@@ -189,6 +189,9 @@ public class RepositoryRequests {
       return new AppliedGetDiffRequest(getResponseFromLink(changesetsResponse, "_embedded.changesets.find{it.id=='" + revision + "'}._links.diff.href"));
     }
 
+    public AppliedGetModificationsRequest requestModifications(String revision) {
+      return new AppliedGetModificationsRequest(getResponseFromLink(changesetsResponse, "_embedded.changesets.find{it.id=='" + revision + "'}._links.modifications.href"));
+    }
   }
 
   class AppliedGetSourcesRequest extends AppliedGetRequest<AppliedGetSourcesRequest> {
@@ -246,4 +249,45 @@ public class RepositoryRequests {
       return new GivenWithUrlAndAuth();
     }
   }
+
+  class AppliedGetModificationsRequest extends AppliedGetRequest<AppliedGetModificationsRequest> {
+    public AppliedGetModificationsRequest(Response response) { super(response); }
+    ModificationsResponse usingModificationsResponse() {
+      return new ModificationsResponse(super.response);
+    }
+
+  }
+
+  class ModificationsResponse {
+    private Response resource;
+
+    public ModificationsResponse(Response resource) {
+      this.resource = resource;
+    }
+
+    ModificationsResponse assertRevision(Consumer<String> assertRevision) {
+      String revision = resource.then().extract().path("revision");
+      assertRevision.accept(revision);
+      return this;
+    }
+
+    ModificationsResponse assertAdded(Consumer<List<String>> assertAdded) {
+      List<String > added  = resource.then().extract().path("added");
+      assertAdded.accept(added);
+      return this;
+    }
+
+    ModificationsResponse assertRemoved(Consumer<List<String>> assertRemoved) {
+      List<String > removed  = resource.then().extract().path("removed");
+      assertRemoved.accept(removed);
+      return this;
+    }
+
+    ModificationsResponse assertModified(Consumer<List<String>> assertModified) {
+      List<String > modified  = resource.then().extract().path("modified");
+      assertModified.accept(modified);
+      return this;
+    }
+
+  }
 }

scm-it/src/test/java/sonia/scm/it/RepositoryUtil.java

@@ -14,6 +14,8 @@ import sonia.scm.repository.client.api.RepositoryClientFactory;
 
 import java.io.File;
 import java.io.IOException;
+import java.util.List;
+import java.util.Map;
 import java.util.UUID;
 
 public class RepositoryUtil {
@@ -29,7 +31,7 @@ public class RepositoryUtil {
   static RepositoryClient createRepositoryClient(String repositoryType, File folder, String username, String password) throws IOException {
     String httpProtocolUrl = TestData.callRepository(username, password, repositoryType, HttpStatus.SC_OK)
       .extract()
-      .path("_links.httpProtocol.href");
+      .path("_links.protocol.find{it.name=='http'}.href");
 
     return REPOSITORY_CLIENT_FACTORY.create(repositoryType, httpProtocolUrl, username, password, folder);
   }
@@ -42,11 +44,53 @@ public class RepositoryUtil {
   }
 
   static Changeset createAndCommitFile(RepositoryClient repositoryClient, String username, String fileName, String content) throws IOException {
+    writeAndAddFile(repositoryClient, fileName, content);
+    return commit(repositoryClient, username, "added " + fileName);
+  }
+
+  /**
+   * Bundle multiple File modification in one changeset
+   *
+   * @param repositoryClient
+   * @param username
+   * @param addedFiles       map.key: path of the file, value: the file content
+   * @param modifiedFiles    map.key: path of the file, value: the file content
+   * @param removedFiles     list of file paths to be removed
+   * @return the changeset with all modifications
+   * @throws IOException
+   */
+  static Changeset commitMultipleFileModifications(RepositoryClient repositoryClient, String username, Map<String, String> addedFiles, Map<String, String> modifiedFiles, List<String> removedFiles) throws IOException {
+    for (String fileName : addedFiles.keySet()) {
+      writeAndAddFile(repositoryClient, fileName, addedFiles.get(fileName));
+    }
+    for (String fileName : modifiedFiles.keySet()) {
+      writeAndAddFile(repositoryClient, fileName, modifiedFiles.get(fileName));
+    }
+    for (String fileName : removedFiles) {
+      deleteFileAndApplyRemoveCommand(repositoryClient, fileName);
+    }
+    return commit(repositoryClient, username, "multiple file modifications" );
+  }
+
+  private static File writeAndAddFile(RepositoryClient repositoryClient, String fileName, String content) throws IOException {
     File file = new File(repositoryClient.getWorkingCopy(), fileName);
     Files.createParentDirs(file);
     Files.write(content, file, Charsets.UTF_8);
     addWithParentDirectories(repositoryClient, file);
-    return commit(repositoryClient, username, "added " + fileName);
+    return file;
+  }
+
+  static Changeset removeAndCommitFile(RepositoryClient repositoryClient, String username, String fileName) throws IOException {
+    deleteFileAndApplyRemoveCommand(repositoryClient, fileName);
+    return commit(repositoryClient, username, "removed " + fileName);
+  }
+
+  private static void deleteFileAndApplyRemoveCommand(RepositoryClient repositoryClient, String fileName) throws IOException {
+    File file = new File(repositoryClient.getWorkingCopy(), fileName);
+    if (repositoryClient.isCommandSupported(ClientCommand.REMOVE)) {
+      repositoryClient.getRemoveCommand().remove(fileName);
+    }
+    file.delete();
   }
 
   private static String addWithParentDirectories(RepositoryClient repositoryClient, File file) throws IOException {

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/api/v2/resources/GitConfigToGitConfigDtoMapper.java

@@ -18,7 +18,7 @@ import static de.otto.edison.hal.Links.linkingTo;
 public abstract class GitConfigToGitConfigDtoMapper extends BaseMapper<GitConfig, GitConfigDto> {
 
   @Inject
-  private UriInfoStore uriInfoStore;
+  private ScmPathInfoStore scmPathInfoStore;
 
   @AfterMapping
   void appendLinks(GitConfig config, @MappingTarget GitConfigDto target) {
@@ -30,12 +30,12 @@ public abstract class GitConfigToGitConfigDtoMapper extends BaseMapper<GitConfig
   }
 
   private String self() {
-    LinkBuilder linkBuilder = new LinkBuilder(uriInfoStore.get(), GitConfigResource.class);
+    LinkBuilder linkBuilder = new LinkBuilder(scmPathInfoStore.get(), GitConfigResource.class);
     return linkBuilder.method("get").parameters().href();
   }
 
   private String update() {
-    LinkBuilder linkBuilder = new LinkBuilder(uriInfoStore.get(), GitConfigResource.class);
+    LinkBuilder linkBuilder = new LinkBuilder(scmPathInfoStore.get(), GitConfigResource.class);
     return linkBuilder.method("update").parameters().href();
   }
 }

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/repository/GitChangesetConverter.java

@@ -37,32 +37,25 @@ package sonia.scm.repository;
 
 import com.google.common.collect.Lists;
 import com.google.common.collect.Multimap;
-
-import org.eclipse.jgit.diff.DiffEntry;
 import org.eclipse.jgit.lib.ObjectId;
 import org.eclipse.jgit.lib.PersonIdent;
 import org.eclipse.jgit.lib.Ref;
 import org.eclipse.jgit.revwalk.RevCommit;
-import org.eclipse.jgit.revwalk.RevTree;
 import org.eclipse.jgit.revwalk.RevWalk;
-import org.eclipse.jgit.treewalk.EmptyTreeIterator;
 import org.eclipse.jgit.treewalk.TreeWalk;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
-
 import sonia.scm.util.Util;
 
-//~--- JDK imports ------------------------------------------------------------
-
 import java.io.Closeable;
 import java.io.IOException;
-
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 import java.util.Set;
 
+//~--- JDK imports ------------------------------------------------------------
+
 /**
  *
  * @author Sebastian Sdorra
@@ -224,13 +217,6 @@ public class GitChangesetConverter implements Closeable
       changeset.setParents(parentList);
     }
 
-    Modifications modifications = createModifications(treeWalk, commit);
-
-    if (modifications != null)
-    {
-      changeset.setModifications(modifications);
-    }
-
     Collection<String> tagCollection = tags.get(commit.getId());
 
     if (Util.isNotEmpty(tagCollection))
@@ -245,108 +231,7 @@ public class GitChangesetConverter implements Closeable
     return changeset;
   }
 
-  /**
-   * TODO: copy and rename
-   *
-   *
-   * @param modifications
-   * @param entry
-   */
-  private void appendModification(Modifications modifications, DiffEntry entry)
-  {
-    switch (entry.getChangeType())
-    {
-      case ADD :
-        modifications.getAdded().add(entry.getNewPath());
 
-        break;
-
-      case MODIFY :
-        modifications.getModified().add(entry.getNewPath());
-
-        break;
-
-      case DELETE :
-        modifications.getRemoved().add(entry.getOldPath());
-
-        break;
-    }
-  }
-
-  /**
-   * Method description
-   *
-   *
-   * @param treeWalk
-   * @param commit
-   *
-   * @return
-   *
-   * @throws IOException
-   */
-  private Modifications createModifications(TreeWalk treeWalk, RevCommit commit)
-    throws IOException
-  {
-    Modifications modifications = null;
-
-    treeWalk.reset();
-    treeWalk.setRecursive(true);
-
-    if (commit.getParentCount() > 0)
-    {
-      RevCommit parent = commit.getParent(0);
-      RevTree tree = parent.getTree();
-
-      if ((tree == null) && (revWalk != null))
-      {
-        revWalk.parseHeaders(parent);
-        tree = parent.getTree();
-      }
-
-      if (tree != null)
-      {
-        treeWalk.addTree(tree);
-      }
-      else
-      {
-        if (logger.isTraceEnabled())
-        {
-          logger.trace("no parent tree at position 0 for commit {}",
-            commit.getName());
-        }
-
-        treeWalk.addTree(new EmptyTreeIterator());
-      }
-    }
-    else
-    {
-      if (logger.isTraceEnabled())
-      {
-        logger.trace("no parent available for commit {}", commit.getName());
-      }
-
-      treeWalk.addTree(new EmptyTreeIterator());
-    }
-
-    treeWalk.addTree(commit.getTree());
-
-    List<DiffEntry> entries = DiffEntry.scan(treeWalk);
-
-    for (DiffEntry e : entries)
-    {
-      if (!e.getOldId().equals(e.getNewId()))
-      {
-        if (modifications == null)
-        {
-          modifications = new Modifications();
-        }
-
-        appendModification(modifications, e);
-      }
-    }
-
-    return modifications;
-  }
 
   //~--- fields ---------------------------------------------------------------
 

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/repository/spi/GitModificationsCommand.java

@@ -0,0 +1,106 @@
+package sonia.scm.repository.spi;
+
+import lombok.extern.slf4j.Slf4j;
+import org.eclipse.jgit.diff.DiffEntry;
+import org.eclipse.jgit.lib.ObjectId;
+import org.eclipse.jgit.revwalk.RevCommit;
+import org.eclipse.jgit.revwalk.RevTree;
+import org.eclipse.jgit.revwalk.RevWalk;
+import org.eclipse.jgit.treewalk.EmptyTreeIterator;
+import org.eclipse.jgit.treewalk.TreeWalk;
+import sonia.scm.repository.GitUtil;
+import sonia.scm.repository.InternalRepositoryException;
+import sonia.scm.repository.Modifications;
+import sonia.scm.repository.Repository;
+
+import java.io.IOException;
+import java.text.MessageFormat;
+import java.util.List;
+
+
+@Slf4j
+public class GitModificationsCommand extends AbstractGitCommand implements ModificationsCommand {
+
+  protected GitModificationsCommand(GitContext context, Repository repository) {
+    super(context, repository);
+  }
+
+  private Modifications createModifications(TreeWalk treeWalk, RevCommit commit, RevWalk revWalk, String revision)
+    throws IOException, UnsupportedModificationTypeException {
+    treeWalk.reset();
+    treeWalk.setRecursive(true);
+    if (commit.getParentCount() > 0) {
+      RevCommit parent = commit.getParent(0);
+      RevTree tree = parent.getTree();
+      if ((tree == null) && (revWalk != null)) {
+        revWalk.parseHeaders(parent);
+        tree = parent.getTree();
+      }
+      if (tree != null) {
+        treeWalk.addTree(tree);
+      } else {
+        log.trace("no parent tree at position 0 for commit {}", commit.getName());
+        treeWalk.addTree(new EmptyTreeIterator());
+      }
+    } else {
+      log.trace("no parent available for commit {}", commit.getName());
+      treeWalk.addTree(new EmptyTreeIterator());
+    }
+    treeWalk.addTree(commit.getTree());
+    List<DiffEntry> entries = DiffEntry.scan(treeWalk);
+    Modifications modifications = new Modifications();
+    for (DiffEntry e : entries) {
+      if (!e.getOldId().equals(e.getNewId())) {
+        appendModification(modifications, e);
+      }
+    }
+    modifications.setRevision(revision);
+    return modifications;
+  }
+
+  @Override
+  public Modifications getModifications(String revision) {
+    org.eclipse.jgit.lib.Repository gitRepository = null;
+    RevWalk revWalk = null;
+    try {
+      gitRepository = open();
+      if (!gitRepository.getAllRefs().isEmpty()) {
+        revWalk = new RevWalk(gitRepository);
+        ObjectId id = GitUtil.getRevisionId(gitRepository, revision);
+        RevCommit commit = revWalk.parseCommit(id);
+        TreeWalk treeWalk = new TreeWalk(gitRepository);
+        return createModifications(treeWalk, commit, revWalk, revision);
+      }
+    } catch (IOException ex) {
+      log.error("could not open repository", ex);
+      throw new InternalRepositoryException(ex);
+
+    } catch (UnsupportedModificationTypeException ex) {
+      log.error("Unsupported modification type", ex);
+      throw new InternalRepositoryException(ex);
+
+    } finally {
+      GitUtil.release(revWalk);
+      GitUtil.close(gitRepository);
+    }
+    return null;
+  }
+
+  @Override
+  public Modifications getModifications(ModificationsCommandRequest request) {
+    return getModifications(request.getRevision());
+  }
+
+  private void appendModification(Modifications modifications, DiffEntry entry) throws UnsupportedModificationTypeException {
+    DiffEntry.ChangeType type = entry.getChangeType();
+    if (type == DiffEntry.ChangeType.ADD) {
+      modifications.getAdded().add(entry.getNewPath());
+    } else if (type == DiffEntry.ChangeType.MODIFY) {
+      modifications.getModified().add(entry.getNewPath());
+    } else if (type == DiffEntry.ChangeType.DELETE) {
+      modifications.getRemoved().add(entry.getOldPath());
+    } else {
+      throw new UnsupportedModificationTypeException(MessageFormat.format("The modification type: {0} is not supported.", type));
+    }
+  }
+}

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/repository/spi/GitRepositoryServiceProvider.java

@@ -33,20 +33,16 @@
 
 package sonia.scm.repository.spi;
 
-//~--- non-JDK imports --------------------------------------------------------
-
 import com.google.common.collect.ImmutableSet;
-
 import sonia.scm.repository.GitRepositoryHandler;
 import sonia.scm.repository.Repository;
 import sonia.scm.repository.api.Command;
 
-//~--- JDK imports ------------------------------------------------------------
-
 import java.io.IOException;
-
 import java.util.Set;
 
+//~--- JDK imports ------------------------------------------------------------
+
 /**
  *
  * @author Sebastian Sdorra
@@ -73,19 +69,10 @@ public class GitRepositoryServiceProvider extends RepositoryServiceProvider
 
   //~--- constructors ---------------------------------------------------------
 
-  /**
+  public GitRepositoryServiceProvider(GitRepositoryHandler handler, Repository repository) {
-   * Constructs ...
-   *
-   *
-   * @param handler
-   * @param repository
-   */
-  public GitRepositoryServiceProvider(GitRepositoryHandler handler,
-    Repository repository)
-  {
     this.handler = handler;
     this.repository = repository;
-    context = new GitContext(handler.getDirectory(repository));
+    this.context = new GitContext(handler.getDirectory(repository));
   }
 
   //~--- methods --------------------------------------------------------------
@@ -188,6 +175,11 @@ public class GitRepositoryServiceProvider extends RepositoryServiceProvider
     return new GitLogCommand(context, repository);
   }
 
+  @Override
+  public ModificationsCommand getModificationsCommand() {
+    return new GitModificationsCommand(context,repository);
+  }
+
   /**
    * Method description
    *

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/repository/spi/GitRepositoryServiceResolver.java

@@ -35,7 +35,6 @@ package sonia.scm.repository.spi;
 //~--- non-JDK imports --------------------------------------------------------
 
 import com.google.inject.Inject;
-
 import sonia.scm.plugin.Extension;
 import sonia.scm.repository.GitRepositoryHandler;
 import sonia.scm.repository.Repository;
@@ -45,51 +44,23 @@ import sonia.scm.repository.Repository;
  * @author Sebastian Sdorra
  */
 @Extension
-public class GitRepositoryServiceResolver implements RepositoryServiceResolver
+public class GitRepositoryServiceResolver implements RepositoryServiceResolver {
-{
 
-  /** Field description */
+  private final GitRepositoryHandler handler;
-  public static final String TYPE = "git";
 
-  //~--- constructors ---------------------------------------------------------
-
-  /**
-   * Constructs ...
-   *
-   *
-   * @param handler
-   */
   @Inject
-  public GitRepositoryServiceResolver(GitRepositoryHandler handler)
+  public GitRepositoryServiceResolver(GitRepositoryHandler handler) {
-  {
     this.handler = handler;
   }
 
-  //~--- methods --------------------------------------------------------------
-
-  /**
-   * Method description
-   *
-   *
-   * @param repository
-   *
-   * @return
-   */
   @Override
-  public GitRepositoryServiceProvider resolve(Repository repository)
+  public GitRepositoryServiceProvider resolve(Repository repository) {
-  {
     GitRepositoryServiceProvider provider = null;
 
-    if (TYPE.equalsIgnoreCase(repository.getType()))
+    if (GitRepositoryHandler.TYPE_NAME.equalsIgnoreCase(repository.getType())) {
-    {
       provider = new GitRepositoryServiceProvider(handler, repository);
     }
 
     return provider;
   }
-
-  //~--- fields ---------------------------------------------------------------
-
-  /** Field description */
-  private GitRepositoryHandler handler;
 }

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/repository/spi/UnsupportedModificationTypeException.java

@@ -0,0 +1,9 @@
+package sonia.scm.repository.spi;
+
+import sonia.scm.repository.InternalRepositoryException;
+
+public class UnsupportedModificationTypeException extends InternalRepositoryException {
+  public UnsupportedModificationTypeException(String message) {
+    super(message);
+  }
+}

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/web/GitBasicAuthenticationFilter.java

@@ -1,69 +0,0 @@
-/**
- * Copyright (c) 2010, Sebastian Sdorra All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer. 2. Redistributions in
- * binary form must reproduce the above copyright notice, this list of
- * conditions and the following disclaimer in the documentation and/or other
- * materials provided with the distribution. 3. Neither the name of SCM-Manager;
- * nor the names of its contributors may be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * http://bitbucket.org/sdorra/scm-manager
- *
- */
-
-
-
-package sonia.scm.web;
-
-//~--- non-JDK imports --------------------------------------------------------
-
-import com.google.inject.Inject;
-
-import sonia.scm.Priority;
-import sonia.scm.config.ScmConfiguration;
-import sonia.scm.filter.Filters;
-import sonia.scm.filter.WebElement;
-import sonia.scm.web.filter.AuthenticationFilter;
-
-import java.util.Set;
-
-
-/**
- * Handles git specific basic authentication.
- * 
- * @author Sebastian Sdorra
- */
-@Priority(Filters.PRIORITY_AUTHENTICATION)
-@WebElement(value = GitServletModule.PATTERN_GIT)
-public class GitBasicAuthenticationFilter extends AuthenticationFilter
-{
-
-  /**
-   * Constructs a new instance.
-   *
-   * @param configuration scm-manager main configuration
-   * @param webTokenGenerators web token generators
-   */
-  @Inject
-  public GitBasicAuthenticationFilter(ScmConfiguration configuration,
-    Set<WebTokenGenerator> webTokenGenerators)
-  {
-    super(configuration, webTokenGenerators);
-  }
-}

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/web/GitPermissionFilter.java

@@ -33,38 +33,24 @@
 
 package sonia.scm.web;
 
-//~--- non-JDK imports --------------------------------------------------------
-
 import com.google.common.annotations.VisibleForTesting;
-import com.google.inject.Inject;
-import com.google.inject.Singleton;
-
 import org.eclipse.jgit.http.server.GitSmartHttpTools;
-
 import sonia.scm.ClientMessages;
 import sonia.scm.config.ScmConfiguration;
 import sonia.scm.repository.GitUtil;
-import sonia.scm.repository.RepositoryProvider;
+import sonia.scm.repository.spi.ScmProviderHttpServlet;
-import sonia.scm.web.filter.ProviderPermissionFilter;
+import sonia.scm.web.filter.PermissionFilter;
-
-//~--- JDK imports ------------------------------------------------------------
-
-import java.io.IOException;
 
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
-import sonia.scm.Priority;
+import java.io.IOException;
-import sonia.scm.filter.Filters;
-import sonia.scm.filter.WebElement;
 
 /**
  * GitPermissionFilter decides if a git request requires write or read privileges.
  * 
  * @author Sebastian Sdorra
  */
-@Priority(Filters.PRIORITY_AUTHORIZATION)
+public class GitPermissionFilter extends PermissionFilter
-@WebElement(value = GitServletModule.PATTERN_GIT)
-public class GitPermissionFilter extends ProviderPermissionFilter
 {
 
   private static final String PARAMETER_SERVICE = "service";
@@ -83,11 +69,9 @@ public class GitPermissionFilter extends ProviderPermissionFilter
    * Constructs a new instance of the GitPermissionFilter.
    *
    * @param configuration scm main configuration
-   * @param repositoryProvider repository provider
    */
-  @Inject
+  public GitPermissionFilter(ScmConfiguration configuration, ScmProviderHttpServlet delegate) {
-  public GitPermissionFilter(ScmConfiguration configuration, RepositoryProvider repositoryProvider) {
+    super(configuration, delegate);
-    super(configuration, repositoryProvider);
   }
 
   @Override
@@ -103,7 +87,7 @@ public class GitPermissionFilter extends ProviderPermissionFilter
   }
 
   @Override
-  protected boolean isWriteRequest(HttpServletRequest request) {
+  public boolean isWriteRequest(HttpServletRequest request) {
     return isReceivePackRequest(request) ||
         isReceiveServiceRequest(request) ||
         isLfsFileUpload(request);

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/web/GitPermissionFilterFactory.java

@@ -0,0 +1,30 @@
+package sonia.scm.web;
+
+import sonia.scm.config.ScmConfiguration;
+import sonia.scm.plugin.Extension;
+import sonia.scm.repository.GitRepositoryHandler;
+import sonia.scm.repository.spi.ScmProviderHttpServlet;
+import sonia.scm.repository.spi.ScmProviderHttpServletDecoratorFactory;
+
+import javax.inject.Inject;
+
+@Extension
+public class GitPermissionFilterFactory implements ScmProviderHttpServletDecoratorFactory {
+
+  private final ScmConfiguration configuration;
+
+  @Inject
+  public GitPermissionFilterFactory(ScmConfiguration configuration) {
+    this.configuration = configuration;
+  }
+
+  @Override
+  public boolean handlesScmType(String type) {
+    return GitRepositoryHandler.TYPE_NAME.equals(type);
+  }
+
+  @Override
+  public ScmProviderHttpServlet createDecorator(ScmProviderHttpServlet delegate) {
+    return new GitPermissionFilter(configuration, delegate);
+  }
+}

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/web/GitRepositoryResolver.java

@@ -125,8 +125,9 @@ public class GitRepositoryResolver implements RepositoryResolver<HttpServletRequ
         throw new ServiceNotEnabledException();
       }
     }
-    catch (RuntimeException | IOException e)
+    catch (IOException e)
     {
+      // REVIEW
       throw new RepositoryNotFoundException(repositoryName, e);
     }
   }

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/web/GitScmProtocolProviderWrapper.java

@@ -0,0 +1,25 @@
+package sonia.scm.web;
+
+import sonia.scm.api.v2.resources.ScmPathInfoStore;
+import sonia.scm.config.ScmConfiguration;
+import sonia.scm.plugin.Extension;
+import sonia.scm.repository.GitRepositoryHandler;
+import sonia.scm.repository.spi.InitializingHttpScmProtocolWrapper;
+
+import javax.inject.Inject;
+import javax.inject.Provider;
+import javax.inject.Singleton;
+
+@Singleton
+@Extension
+public class GitScmProtocolProviderWrapper extends InitializingHttpScmProtocolWrapper {
+  @Inject
+  public GitScmProtocolProviderWrapper(ScmGitServletProvider servletProvider, Provider<ScmPathInfoStore> uriInfoStore, ScmConfiguration scmConfiguration) {
+    super(servletProvider, uriInfoStore, scmConfiguration);
+  }
+
+  @Override
+  public String getType() {
+    return GitRepositoryHandler.TYPE_NAME;
+  }
+}

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/web/GitServletModule.java

@@ -51,18 +51,6 @@ import sonia.scm.web.lfs.LfsBlobStoreFactory;
 public class GitServletModule extends ServletModule
 {
 
-  public static final String GIT_PATH = "/git";
-
-  /** Field description */
-  public static final String PATTERN_GIT = GIT_PATH + "/*";
-
-
-  //~--- methods --------------------------------------------------------------
-
-  /**
-   * Method description
-   *
-   */
   @Override
   protected void configureServlets()
   {
@@ -75,8 +63,5 @@ public class GitServletModule extends ServletModule
 
     bind(GitConfigDtoToGitConfigMapper.class).to(Mappers.getMapper(GitConfigDtoToGitConfigMapper.class).getClass());
     bind(GitConfigToGitConfigDtoMapper.class).to(Mappers.getMapper(GitConfigToGitConfigDtoMapper.class).getClass());
-
-    // serlvelts and filters
-    serve(PATTERN_GIT).with(ScmGitServlet.class);
   }
 }

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/web/ScmGitServlet.java

@@ -33,8 +33,6 @@
 
 package sonia.scm.web;
 
-//~--- non-JDK imports --------------------------------------------------------
-
 import com.google.common.annotations.VisibleForTesting;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
@@ -42,8 +40,8 @@ import org.eclipse.jgit.http.server.GitServlet;
 import org.eclipse.jgit.lfs.lib.Constants;
 import org.slf4j.Logger;
 import sonia.scm.repository.Repository;
-import sonia.scm.repository.RepositoryProvider;
 import sonia.scm.repository.RepositoryRequestListenerUtil;
+import sonia.scm.repository.spi.ScmProviderHttpServlet;
 import sonia.scm.util.HttpUtil;
 import sonia.scm.web.lfs.servlet.LfsServletFactory;
 
@@ -57,19 +55,18 @@ import java.util.regex.Pattern;
 import static org.eclipse.jgit.lfs.lib.Constants.CONTENT_TYPE_GIT_LFS_JSON;
 import static org.slf4j.LoggerFactory.getLogger;
 
-//~--- JDK imports ------------------------------------------------------------
-
 /**
  *
  * @author Sebastian Sdorra
  */
 @Singleton
-public class ScmGitServlet extends GitServlet
+public class ScmGitServlet extends GitServlet implements ScmProviderHttpServlet
 {
 
-  /** Field description */
+  public static final String REPO_PATH = "/repo";
+
   public static final Pattern REGEX_GITHTTPBACKEND = Pattern.compile(
-    "(?x)^/git/(.*/(HEAD|info/refs|objects/(info/[^/]+|[0-9a-f]{2}/[0-9a-f]{38}|pack/pack-[0-9a-f]{40}\\.(pack|idx))|git-(upload|receive)-pack))$"
+    "(?x)^/repo/(.*/(HEAD|info/refs|objects/(info/[^/]+|[0-9a-f]{2}/[0-9a-f]{38}|pack/pack-[0-9a-f]{40}\\.(pack|idx))|git-(upload|receive)-pack))$"
   );
 
   /** Field description */
@@ -88,7 +85,6 @@ public class ScmGitServlet extends GitServlet
    * @param repositoryResolver
    * @param receivePackFactory
    * @param repositoryViewer
-   * @param repositoryProvider
    * @param repositoryRequestListenerUtil
    * @param lfsServletFactory
    */
@@ -96,11 +92,9 @@ public class ScmGitServlet extends GitServlet
   public ScmGitServlet(GitRepositoryResolver repositoryResolver,
                        GitReceivePackFactory receivePackFactory,
                        GitRepositoryViewer repositoryViewer,
-                       RepositoryProvider repositoryProvider,
                        RepositoryRequestListenerUtil repositoryRequestListenerUtil,
                        LfsServletFactory lfsServletFactory)
   {
-    this.repositoryProvider = repositoryProvider;
     this.repositoryViewer = repositoryViewer;
     this.repositoryRequestListenerUtil = repositoryRequestListenerUtil;
     this.lfsServletFactory = lfsServletFactory;
@@ -122,44 +116,9 @@ public class ScmGitServlet extends GitServlet
    * @throws ServletException
    */
   @Override
-  protected void service(HttpServletRequest request,
+  public void service(HttpServletRequest request, HttpServletResponse response, Repository repository)
-    HttpServletResponse response)
     throws ServletException, IOException
   {    
-    Repository repository = repositoryProvider.get();
-    if (repository != null) {
-      handleRequest(request, response, repository);
-    } else {
-      // logger
-      response.sendError(HttpServletResponse.SC_NOT_FOUND);
-    }
-  }
-  
-  /**
-   * Decides the type request being currently made and delegates it accordingly.
-   * <ul>
-   * <li>Batch API:</li>
-   * <ul>
-   * <li>used to provide the client with information on how handle the large files of a repository.</li>
-   * <li>response contains the information where to perform the actual upload and download of the large objects.</li>
-   * </ul>
-   * <li>Transfer API:</li>
-   * <ul>
-   * <li>receives and provides the actual large objects (resolves the pointer placed in the file of the working copy).</li>
-   * <li>invoked only after the Batch API has been questioned about what to do with the large files</li>
-   * </ul>
-   * <li>Regular Git Http API:</li>
-   * <ul>
-   * <li>regular git http wire protocol, use by normal git clients.</li>
-   * </ul>
-   * <li>Browser Overview:<li>
-   * <ul>
-   * <li>short repository overview for browser clients.</li>
-   * </ul>
-   * </li>
-   * </ul>
-   */
-  private void handleRequest(HttpServletRequest request, HttpServletResponse response, Repository repository) throws ServletException, IOException {
     String repoPath = repository.getNamespace() + "/" + repository.getName();
     logger.trace("handle git repository at {}", repoPath);
     if (isLfsBatchApiRequest(request, repoPath)) {
@@ -210,7 +169,7 @@ public class ScmGitServlet extends GitServlet
    * @throws IOException
    * @throws ServletException
    */
-  private void handleBrowserRequest(HttpServletRequest request, HttpServletResponse response, Repository repository) throws ServletException, IOException {
+  private void handleBrowserRequest(HttpServletRequest request, HttpServletResponse response, Repository repository) throws ServletException {
     try {
       repositoryViewer.handleRequest(request, response, repository);
     } catch (IOException ex) {
@@ -229,7 +188,7 @@ public class ScmGitServlet extends GitServlet
    */
   private static boolean isLfsFileTransferRequest(HttpServletRequest request, String repository) {
 
-    String regex = String.format("^%s%s/%s(\\.git)?/info/lfs/objects/[a-z0-9]{64}$", request.getContextPath(), GitServletModule.GIT_PATH, repository);
+    String regex = String.format("^%s%s/%s(\\.git)?/info/lfs/objects/[a-z0-9]{64}$", request.getContextPath(), REPO_PATH, repository);
     boolean pathMatches = request.getRequestURI().matches(regex);
 
     boolean methodMatches = request.getMethod().equals("PUT") || request.getMethod().equals("GET");
@@ -248,7 +207,7 @@ public class ScmGitServlet extends GitServlet
    */
   private static boolean isLfsBatchApiRequest(HttpServletRequest request, String repository) {
 
-    String regex = String.format("^%s%s/%s(\\.git)?/info/lfs/objects/batch$", request.getContextPath(), GitServletModule.GIT_PATH, repository);
+    String regex = String.format("^%s%s/%s(\\.git)?/info/lfs/objects/batch$", request.getContextPath(), REPO_PATH, repository);
     boolean pathMatches = request.getRequestURI().matches(regex);
 
     boolean methodMatches = "POST".equals(request.getMethod());
@@ -284,12 +243,8 @@ public class ScmGitServlet extends GitServlet
     return false;
   }
 
-
   //~--- fields ---------------------------------------------------------------
 
-  /** Field description */
-  private final RepositoryProvider repositoryProvider;
-
   /** Field description */
   private final RepositoryRequestListenerUtil repositoryRequestListenerUtil;
 
@@ -299,5 +254,4 @@ public class ScmGitServlet extends GitServlet
   private final GitRepositoryViewer repositoryViewer;
 
   private final LfsServletFactory lfsServletFactory;
-
 }

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/web/ScmGitServletProvider.java

@@ -0,0 +1,23 @@
+package sonia.scm.web;
+
+import com.google.inject.Inject;
+import sonia.scm.repository.GitRepositoryHandler;
+import sonia.scm.repository.spi.ScmProviderHttpServlet;
+import sonia.scm.repository.spi.ScmProviderHttpServletProvider;
+
+import javax.inject.Provider;
+
+public class ScmGitServletProvider extends ScmProviderHttpServletProvider {
+
+  @Inject
+  private Provider<ScmGitServlet> servletProvider;
+
+  public ScmGitServletProvider() {
+    super(GitRepositoryHandler.TYPE_NAME);
+  }
+
+  @Override
+  protected ScmProviderHttpServlet getRootServlet() {
+    return servletProvider.get();
+  }
+}

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/web/lfs/servlet/LfsServletFactory.java

@@ -70,7 +70,7 @@ public class LfsServletFactory {
    */
   @VisibleForTesting
   static String buildBaseUri(Repository repository, HttpServletRequest request) {
-    return String.format("%s/git/%s/%s.git/info/lfs/objects/", HttpUtil.getCompleteUrl(request), repository.getNamespace(), repository.getName());
+    return String.format("%s/repo/%s/%s.git/info/lfs/objects/", HttpUtil.getCompleteUrl(request), repository.getNamespace(), repository.getName());
   }
 
 }

scm-plugins/scm-git-plugin/src/test/java/sonia/scm/api/v2/resources/GitConfigResourceTest.java

@@ -53,7 +53,7 @@ public class GitConfigResourceTest {
   private GitConfigDtoToGitConfigMapperImpl dtoToConfigMapper;
 
   @Mock(answer = Answers.RETURNS_DEEP_STUBS)
-  private UriInfoStore uriInfoStore;
+  private ScmPathInfoStore scmPathInfoStore;
 
   @InjectMocks
   private GitConfigToGitConfigDtoMapperImpl configToDtoMapper;
@@ -67,7 +67,7 @@ public class GitConfigResourceTest {
     when(repositoryHandler.getConfig()).thenReturn(gitConfig);
     GitConfigResource gitConfigResource = new GitConfigResource(dtoToConfigMapper, configToDtoMapper, repositoryHandler);
     dispatcher.getRegistry().addSingletonResource(gitConfigResource);
-    when(uriInfoStore.get().getBaseUri()).thenReturn(baseUri);
+    when(scmPathInfoStore.get().getApiRestUri()).thenReturn(baseUri);
   }
 
   @Test

scm-plugins/scm-git-plugin/src/test/java/sonia/scm/api/v2/resources/GitConfigToGitConfigDtoMapperTest.java

@@ -28,7 +28,7 @@ public class GitConfigToGitConfigDtoMapperTest {
   private URI baseUri = URI.create("http://example.com/base/");
 
   @Mock(answer = Answers.RETURNS_DEEP_STUBS)
-  private UriInfoStore uriInfoStore;
+  private ScmPathInfoStore scmPathInfoStore;
 
   @InjectMocks
   private GitConfigToGitConfigDtoMapperImpl mapper;
@@ -40,7 +40,7 @@ public class GitConfigToGitConfigDtoMapperTest {
 
   @Before
   public void init() {
-    when(uriInfoStore.get().getBaseUri()).thenReturn(baseUri);
+    when(scmPathInfoStore.get().getApiRestUri()).thenReturn(baseUri);
     expectedBaseUri = baseUri.resolve(GitConfigResource.GIT_CONFIG_PATH_V2);
     subjectThreadState.bind();
     ThreadContext.bind(subject);

scm-plugins/scm-git-plugin/src/test/java/sonia/scm/repository/spi/AbstractRemoteCommandTestBase.java

@@ -85,14 +85,14 @@ public class AbstractRemoteCommandTestBase
     outgoingDirectory = tempFolder.newFile("outgoing");
     outgoingDirectory.delete();
 
-    incomgingRepository = new Repository("1", "git", "space", "incoming");
+    incomingRepository = new Repository("1", "git", "space", "incoming");
     outgoingRepository = new Repository("2", "git", "space", "outgoing");
 
     incoming = Git.init().setDirectory(incomingDirectory).setBare(false).call();
     outgoing = Git.init().setDirectory(outgoingDirectory).setBare(false).call();
 
     handler = mock(GitRepositoryHandler.class);
-    when(handler.getDirectory(incomgingRepository)).thenReturn(
+    when(handler.getDirectory(incomingRepository)).thenReturn(
       incomingDirectory);
     when(handler.getDirectory(outgoingRepository)).thenReturn(
       outgoingDirectory);
@@ -211,7 +211,7 @@ public class AbstractRemoteCommandTestBase
   protected GitRepositoryHandler handler;
 
   /** Field description */
-  protected Repository incomgingRepository;
+  protected Repository incomingRepository;
 
   /** Field description */
   protected Git incoming;

scm-plugins/scm-git-plugin/src/test/java/sonia/scm/repository/spi/GitIncomingCommandTest.java

@@ -105,7 +105,7 @@ public class GitIncomingCommandTest
 
     commit(outgoing, "added a");
     
-    GitPullCommand pull = new GitPullCommand(handler, new GitContext(incomingDirectory), incomgingRepository);
+    GitPullCommand pull = new GitPullCommand(handler, new GitContext(incomingDirectory), incomingRepository);
     PullCommandRequest req = new PullCommandRequest();
     req.setRemoteRepository(outgoingRepository);
     pull.pull(req);
@@ -192,6 +192,6 @@ public class GitIncomingCommandTest
   private GitIncomingCommand createCommand()
   {
     return new GitIncomingCommand(handler, new GitContext(incomingDirectory),
-      incomgingRepository);
+      incomingRepository);
   }
 }

scm-plugins/scm-git-plugin/src/test/java/sonia/scm/repository/spi/GitLogCommandTest.java

@@ -168,21 +168,23 @@ public class GitLogCommandTest extends AbstractGitCommandTestBase
     Changeset c = command.getChangeset("435df2f061add3589cb3");
 
     assertNotNull(c);
-    assertEquals("435df2f061add3589cb326cc64be9b9c3897ceca", c.getId());
+    String revision = "435df2f061add3589cb326cc64be9b9c3897ceca";
+    assertEquals(revision, c.getId());
     assertEquals("added a and b files", c.getDescription());
     checkDate(c.getDate());
     assertEquals("Douglas Adams", c.getAuthor().getName());
     assertEquals("douglas.adams@hitchhiker.com", c.getAuthor().getMail());
     assertEquals("added a and b files", c.getDescription());
 
-    Modifications mods = c.getModifications();
+    GitModificationsCommand gitModificationsCommand = new GitModificationsCommand(createContext(), repository);
+    Modifications modifications = gitModificationsCommand.getModifications(revision);
 
-    assertNotNull(mods);
+    assertNotNull(modifications);
-    assertTrue("modified list should be empty", mods.getModified().isEmpty());
+    assertTrue("modified list should be empty", modifications.getModified().isEmpty());
-    assertTrue("removed list should be empty", mods.getRemoved().isEmpty());
+    assertTrue("removed list should be empty", modifications.getRemoved().isEmpty());
-    assertFalse("added list should not be empty", mods.getAdded().isEmpty());
+    assertFalse("added list should not be empty", modifications.getAdded().isEmpty());
-    assertEquals(2, mods.getAdded().size());
+    assertEquals(2, modifications.getAdded().size());
-    assertThat(mods.getAdded(), contains("a.txt", "b.txt"));
+    assertThat(modifications.getAdded(), contains("a.txt", "b.txt"));
   }
 
   @Test

scm-plugins/scm-git-plugin/src/test/java/sonia/scm/repository/spi/GitModificationsCommandTest.java

@@ -0,0 +1,126 @@
+package sonia.scm.repository.spi;
+
+import org.eclipse.jgit.revwalk.RevCommit;
+import org.junit.Before;
+import org.junit.Test;
+import sonia.scm.repository.Modifications;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.function.Consumer;
+
+import static org.assertj.core.api.Java6Assertions.assertThat;
+
+public class GitModificationsCommandTest extends AbstractRemoteCommandTestBase {
+
+  private GitModificationsCommand incomingModificationsCommand;
+  private GitModificationsCommand outgoingModificationsCommand;
+
+  @Before
+  public void init() {
+    incomingModificationsCommand = new GitModificationsCommand(new GitContext(incomingDirectory), incomingRepository);
+    outgoingModificationsCommand = new GitModificationsCommand(new GitContext(outgoingDirectory), outgoingRepository);
+  }
+
+  @Test
+  public void shouldReadAddedFiles() throws Exception {
+    write(outgoing, outgoingDirectory, "a.txt", "bal bla");
+    RevCommit addedFileCommit = commit(outgoing, "add file");
+    String revision = addedFileCommit.getName();
+    Consumer<Modifications> assertModifications = assertAddedFiles("a.txt");
+    assertModifications.accept(outgoingModificationsCommand.getModifications(revision));
+    pushOutgoingAndPullIncoming();
+    assertModifications.accept(incomingModificationsCommand.getModifications(revision));
+  }
+
+  @Test
+  public void shouldReadModifiedFiles() throws Exception {
+    write(outgoing, outgoingDirectory, "a.txt", "bal bla");
+    commit(outgoing, "add file");
+    write(outgoing, outgoingDirectory, "a.txt", "modified content");
+    RevCommit modifiedFileCommit = commit(outgoing, "modify file");
+    String revision = modifiedFileCommit.getName();
+    Consumer<Modifications> assertModifications = assertModifiedFiles("a.txt");
+    assertModifications.accept(outgoingModificationsCommand.getModifications(revision));
+    pushOutgoingAndPullIncoming();
+    assertModifications.accept(incomingModificationsCommand.getModifications(revision));
+  }
+
+  @Test
+  public void shouldReadRemovedFiles() throws Exception {
+    String fileName = "a.txt";
+    write(outgoing, outgoingDirectory, fileName, "bal bla");
+    commit(outgoing, "add file");
+    File file = new File(outgoingDirectory, fileName);
+    file.delete();
+    outgoing.rm().addFilepattern(fileName).call();
+    RevCommit removedFileCommit = commit(outgoing, "remove file");
+    String revision = removedFileCommit.getName();
+    Consumer<Modifications> assertModifications = assertRemovedFiles(fileName);
+    pushOutgoingAndPullIncoming();
+    assertModifications.accept(incomingModificationsCommand.getModifications(revision));
+    assertModifications.accept(outgoingModificationsCommand.getModifications(revision));
+  }
+
+  void pushOutgoingAndPullIncoming() throws IOException {
+    GitPushCommand cmd = new GitPushCommand(handler, new GitContext(outgoingDirectory),
+      outgoingRepository);
+    PushCommandRequest request = new PushCommandRequest();
+    request.setRemoteRepository(incomingRepository);
+    cmd.push(request);
+    GitPullCommand pullCommand = new GitPullCommand(handler, new GitContext(incomingDirectory),
+      incomingRepository);
+    PullCommandRequest pullRequest = new PullCommandRequest();
+    pullRequest.setRemoteRepository(incomingRepository);
+    pullCommand.pull(pullRequest);
+  }
+
+  Consumer<Modifications> assertRemovedFiles(String fileName) {
+    return (modifications) -> {
+      assertThat(modifications).isNotNull();
+      assertThat(modifications.getAdded())
+        .as("added files modifications")
+        .hasSize(0);
+      assertThat(modifications.getModified())
+        .as("modified files modifications")
+        .hasSize(0);
+      assertThat(modifications.getRemoved())
+        .as("removed files modifications")
+        .hasSize(1)
+        .containsOnly(fileName);
+    };
+  }
+
+
+  Consumer<Modifications> assertModifiedFiles(String file) {
+    return (modifications) -> {
+      assertThat(modifications).isNotNull();
+      assertThat(modifications.getAdded())
+        .as("added files modifications")
+        .hasSize(0);
+      assertThat(modifications.getModified())
+        .as("modified files modifications")
+        .hasSize(1)
+        .containsOnly(file);
+      assertThat(modifications.getRemoved())
+        .as("removed files modifications")
+        .hasSize(0);
+    };
+  }
+
+  Consumer<Modifications> assertAddedFiles(String file) {
+    return (modifications) -> {
+      assertThat(modifications).isNotNull();
+      assertThat(modifications.getAdded())
+        .as("added files modifications")
+        .hasSize(1)
+        .containsOnly(file);
+      assertThat(modifications.getModified())
+        .as("modified files modifications")
+        .hasSize(0);
+      assertThat(modifications.getRemoved())
+        .as("removed files modifications")
+        .hasSize(0);
+    };
+  }
+}

scm-plugins/scm-git-plugin/src/test/java/sonia/scm/repository/spi/GitOutgoingCommandTest.java

@@ -78,7 +78,7 @@ public class GitOutgoingCommandTest extends AbstractRemoteCommandTestBase
     GitOutgoingCommand cmd = createCommand();
     OutgoingCommandRequest request = new OutgoingCommandRequest();
 
-    request.setRemoteRepository(incomgingRepository);
+    request.setRemoteRepository(incomingRepository);
 
     ChangesetPagingResult cpr = cmd.getOutgoingChangesets(request);
 
@@ -98,7 +98,7 @@ public class GitOutgoingCommandTest extends AbstractRemoteCommandTestBase
    * @throws RepositoryException
    */
   @Test
-  public void testGetOutgoingChangesetsWithAllreadyPushedChanges()
+  public void testGetOutgoingChangesetsWithAlreadyPushedChanges()
     throws IOException, GitAPIException
   {
     write(outgoing, outgoingDirectory, "a.txt", "content of a.txt");
@@ -110,7 +110,7 @@ public class GitOutgoingCommandTest extends AbstractRemoteCommandTestBase
                             outgoingRepository);
     PushCommandRequest req = new PushCommandRequest();
 
-    req.setRemoteRepository(incomgingRepository);
+    req.setRemoteRepository(incomingRepository);
     push.push(req);
 
     write(outgoing, outgoingDirectory, "b.txt", "content of b.txt");
@@ -120,7 +120,7 @@ public class GitOutgoingCommandTest extends AbstractRemoteCommandTestBase
     GitOutgoingCommand cmd = createCommand();
     OutgoingCommandRequest request = new OutgoingCommandRequest();
 
-    request.setRemoteRepository(incomgingRepository);
+    request.setRemoteRepository(incomingRepository);
 
     ChangesetPagingResult cpr = cmd.getOutgoingChangesets(request);
 
@@ -144,7 +144,7 @@ public class GitOutgoingCommandTest extends AbstractRemoteCommandTestBase
     GitOutgoingCommand cmd = createCommand();
     OutgoingCommandRequest request = new OutgoingCommandRequest();
 
-    request.setRemoteRepository(incomgingRepository);
+    request.setRemoteRepository(incomingRepository);
 
     ChangesetPagingResult cpr = cmd.getOutgoingChangesets(request);
 

scm-plugins/scm-git-plugin/src/test/java/sonia/scm/repository/spi/GitPushCommandTest.java

@@ -78,7 +78,7 @@ public class GitPushCommandTest extends AbstractRemoteCommandTestBase
     GitPushCommand cmd = createCommand();
     PushCommandRequest request = new PushCommandRequest();
 
-    request.setRemoteRepository(incomgingRepository);
+    request.setRemoteRepository(incomingRepository);
 
     PushResponse response = cmd.push(request);
 

scm-plugins/scm-git-plugin/src/test/java/sonia/scm/web/GitPermissionFilterTest.java

@@ -5,7 +5,7 @@ import org.junit.runner.RunWith;
 import org.mockito.Mock;
 import org.mockito.junit.MockitoJUnitRunner;
 import sonia.scm.config.ScmConfiguration;
-import sonia.scm.repository.RepositoryProvider;
+import sonia.scm.repository.spi.ScmProviderHttpServlet;
 import sonia.scm.util.HttpUtil;
 
 import javax.servlet.ServletOutputStream;
@@ -29,12 +29,7 @@ import static org.mockito.Mockito.when;
 @RunWith(MockitoJUnitRunner.class)
 public class GitPermissionFilterTest {
 
-  @Mock
+  private final GitPermissionFilter permissionFilter = new GitPermissionFilter(new ScmConfiguration(), mock(ScmProviderHttpServlet.class));
-  private RepositoryProvider repositoryProvider;
-  
-  private final GitPermissionFilter permissionFilter = new GitPermissionFilter(
-    new ScmConfiguration(), repositoryProvider
-  );
   
   @Mock
   private HttpServletResponse response;

scm-plugins/scm-git-plugin/src/test/java/sonia/scm/web/lfs/servlet/LfsServletFactoryTest.java

@@ -23,12 +23,12 @@ public class LfsServletFactoryTest {
     String repositoryName = "git-lfs-demo";
 
     String result = LfsServletFactory.buildBaseUri(new Repository("", "GIT", repositoryNamespace, repositoryName), RequestWithUri(repositoryName, true));
-    assertThat(result, is(equalTo("http://localhost:8081/scm/git/space/git-lfs-demo.git/info/lfs/objects/")));
+    assertThat(result, is(equalTo("http://localhost:8081/scm/repo/space/git-lfs-demo.git/info/lfs/objects/")));
 
 
     //result will be with dot-git suffix, ide
     result = LfsServletFactory.buildBaseUri(new Repository("", "GIT", repositoryNamespace, repositoryName), RequestWithUri(repositoryName, false));
-    assertThat(result, is(equalTo("http://localhost:8081/scm/git/space/git-lfs-demo.git/info/lfs/objects/")));
+    assertThat(result, is(equalTo("http://localhost:8081/scm/repo/space/git-lfs-demo.git/info/lfs/objects/")));
   }
 
   private HttpServletRequest RequestWithUri(String repositoryName, boolean withDotGitSuffix) {
@@ -44,12 +44,10 @@ public class LfsServletFactoryTest {
 
     //build from valid live request data
     when(mockedRequest.getRequestURL()).thenReturn(
-      new StringBuffer(String.format("http://localhost:8081/scm/git/%s%s/info/lfs/objects/batch", repositoryName, suffix)));
+      new StringBuffer(String.format("http://localhost:8081/scm/repo/%s%s/info/lfs/objects/batch", repositoryName, suffix)));
-    when(mockedRequest.getRequestURI()).thenReturn(String.format("/scm/git/%s%s/info/lfs/objects/batch", repositoryName, suffix));
+    when(mockedRequest.getRequestURI()).thenReturn(String.format("/scm/repo/%s%s/info/lfs/objects/batch", repositoryName, suffix));
     when(mockedRequest.getContextPath()).thenReturn("/scm");
 
     return mockedRequest;
   }
-
-
 }

scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/api/v2/resources/HgConfigInstallationsToDtoMapper.java

@@ -8,11 +8,11 @@ import static de.otto.edison.hal.Links.linkingTo;
 
 public class HgConfigInstallationsToDtoMapper {
 
-  private UriInfoStore uriInfoStore;
+  private ScmPathInfoStore scmPathInfoStore;
 
   @Inject
-  public HgConfigInstallationsToDtoMapper(UriInfoStore uriInfoStore) {
+  public HgConfigInstallationsToDtoMapper(ScmPathInfoStore scmPathInfoStore) {
-    this.uriInfoStore = uriInfoStore;
+    this.scmPathInfoStore = scmPathInfoStore;
   }
 
   public HgConfigInstallationsDto map(List<String> installations, String path) {
@@ -20,7 +20,7 @@ public class HgConfigInstallationsToDtoMapper {
   }
 
   private String createSelfLink(String path) {
-    LinkBuilder linkBuilder = new LinkBuilder(uriInfoStore.get(), HgConfigResource.class);
+    LinkBuilder linkBuilder = new LinkBuilder(scmPathInfoStore.get(), HgConfigResource.class);
     return linkBuilder.method("getInstallationsResource").parameters().href() + '/' + path;
   }
 }

scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/api/v2/resources/HgConfigPackagesToDtoMapper.java

@@ -20,7 +20,7 @@ import static de.otto.edison.hal.Links.linkingTo;
 public abstract class HgConfigPackagesToDtoMapper  {
 
   @Inject
-  private UriInfoStore uriInfoStore;
+  private ScmPathInfoStore scmPathInfoStore;
 
   public HgConfigPackagesDto map(HgPackages hgpackages) {
     return map(new HgPackagesNonIterable(hgpackages));
@@ -40,7 +40,7 @@ public abstract class HgConfigPackagesToDtoMapper  {
   }
 
   private String createSelfLink() {
-    LinkBuilder linkBuilder = new LinkBuilder(uriInfoStore.get(), HgConfigResource.class);
+    LinkBuilder linkBuilder = new LinkBuilder(scmPathInfoStore.get(), HgConfigResource.class);
     return linkBuilder.method("getPackagesResource").parameters().href();
   }
 

scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/api/v2/resources/HgConfigToHgConfigDtoMapper.java

@@ -18,7 +18,7 @@ import static de.otto.edison.hal.Links.linkingTo;
 public abstract class HgConfigToHgConfigDtoMapper extends BaseMapper<HgConfig, HgConfigDto> {
 
   @Inject
-  private UriInfoStore uriInfoStore;
+  private ScmPathInfoStore scmPathInfoStore;
 
   @AfterMapping
   void appendLinks(HgConfig config, @MappingTarget HgConfigDto target) {
@@ -30,12 +30,12 @@ public abstract class HgConfigToHgConfigDtoMapper extends BaseMapper<HgConfig, H
   }
 
   private String self() {
-    LinkBuilder linkBuilder = new LinkBuilder(uriInfoStore.get(), HgConfigResource.class);
+    LinkBuilder linkBuilder = new LinkBuilder(scmPathInfoStore.get(), HgConfigResource.class);
     return linkBuilder.method("get").parameters().href();
   }
 
   private String update() {
-    LinkBuilder linkBuilder = new LinkBuilder(uriInfoStore.get(), HgConfigResource.class);
+    LinkBuilder linkBuilder = new LinkBuilder(scmPathInfoStore.get(), HgConfigResource.class);
     return linkBuilder.method("update").parameters().href();
   }
 }

scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/repository/spi/HgModificationsCommand.java

@@ -0,0 +1,32 @@
+package sonia.scm.repository.spi;
+
+import sonia.scm.repository.Modifications;
+import sonia.scm.repository.Repository;
+import sonia.scm.repository.spi.javahg.HgLogChangesetCommand;
+
+import java.text.MessageFormat;
+
+public class HgModificationsCommand extends AbstractCommand implements ModificationsCommand {
+
+  HgModificationsCommand(HgCommandContext context, Repository repository) {
+    super(context, repository);
+  }
+
+
+  @Override
+  public Modifications getModifications(String revision) {
+    com.aragost.javahg.Repository repository = open();
+    HgLogChangesetCommand hgLogChangesetCommand = HgLogChangesetCommand.on(repository, getContext().getConfig());
+    int hgRevision = hgLogChangesetCommand.rev(revision).singleRevision();
+    Modifications modifications = hgLogChangesetCommand.rev(MessageFormat.format("{0}:{0}", hgRevision)).extractModifications();
+    modifications.setRevision(revision);
+    return modifications;
+  }
+
+  @Override
+  public Modifications getModifications(ModificationsCommandRequest request) {
+    return getModifications(request.getRevision());
+  }
+
+
+}

scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/repository/spi/HgRepositoryServiceProvider.java

@@ -33,21 +33,16 @@
 
 package sonia.scm.repository.spi;
 
-//~--- non-JDK imports --------------------------------------------------------
-
 import com.google.common.io.Closeables;
-
 import sonia.scm.repository.Feature;
 import sonia.scm.repository.HgHookManager;
 import sonia.scm.repository.HgRepositoryHandler;
 import sonia.scm.repository.Repository;
 import sonia.scm.repository.api.Command;
-
+import sonia.scm.repository.api.CommandNotSupportedException;
-//~--- JDK imports ------------------------------------------------------------
 
 import java.io.File;
 import java.io.IOException;
-
 import java.util.EnumSet;
 import java.util.Set;
 
@@ -81,16 +76,6 @@ public class HgRepositoryServiceProvider extends RepositoryServiceProvider
 
   //~--- constructors ---------------------------------------------------------
 
-  /**
-   * Constructs ...
-   *
-   *
-   *
-   *
-   * @param hookManager
-   * @param handler
-   * @param repository
-   */
   HgRepositoryServiceProvider(HgRepositoryHandler handler,
     HgHookManager hookManager, Repository repository)
   {
@@ -201,6 +186,16 @@ public class HgRepositoryServiceProvider extends RepositoryServiceProvider
     return new HgLogCommand(context, repository);
   }
 
+  /**
+   * Get the corresponding {@link ModificationsCommand} implemented from the Plugins
+   *
+   * @return the corresponding {@link ModificationsCommand} implemented from the Plugins
+   * @throws CommandNotSupportedException if there is no Implementation
+   */
+  public ModificationsCommand getModificationsCommand() {
+    return new HgModificationsCommand(context,repository);
+  }
+
   /**
    * Method description
    *

scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/repository/spi/HgRepositoryServiceResolver.java

@@ -33,10 +33,7 @@
 
 package sonia.scm.repository.spi;
 
-//~--- non-JDK imports --------------------------------------------------------
-
 import com.google.inject.Inject;
-
 import sonia.scm.plugin.Extension;
 import sonia.scm.repository.HgHookManager;
 import sonia.scm.repository.HgRepositoryHandler;
@@ -50,19 +47,9 @@ import sonia.scm.repository.Repository;
 public class HgRepositoryServiceResolver implements RepositoryServiceResolver
 {
 
-  /** Field description */
+  private HgRepositoryHandler handler;
-  private static final String TYPE = "hg";
+  private HgHookManager hookManager;
 
-  //~--- constructors ---------------------------------------------------------
-
-  /**
-   * Constructs ...
-   *
-   *
-   *
-   * @param hookManager
-   * @param handler
-   */
   @Inject
   public HgRepositoryServiceResolver(HgRepositoryHandler handler,
     HgHookManager hookManager)
@@ -71,35 +58,14 @@ public class HgRepositoryServiceResolver implements RepositoryServiceResolver
     this.hookManager = hookManager;
   }
 
-  //~--- methods --------------------------------------------------------------
-
-  /**
-   * Method description
-   *
-   *
-   * @param repository
-   *
-   * @return
-   */
   @Override
-  public HgRepositoryServiceProvider resolve(Repository repository)
+  public HgRepositoryServiceProvider resolve(Repository repository) {
-  {
     HgRepositoryServiceProvider provider = null;
 
-    if (TYPE.equalsIgnoreCase(repository.getType()))
+    if (HgRepositoryHandler.TYPE_NAME.equalsIgnoreCase(repository.getType())) {
-    {
+      provider = new HgRepositoryServiceProvider(handler, hookManager, repository);
-      provider = new HgRepositoryServiceProvider(handler, hookManager,
-        repository);
     }
 
     return provider;
   }
-
-  //~--- fields ---------------------------------------------------------------
-
-  /** Field description */
-  private HgRepositoryHandler handler;
-
-  /** Field description */
-  private HgHookManager hookManager;
 }

scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/repository/spi/javahg/AbstractChangesetCommand.java

@@ -41,21 +41,18 @@ import com.aragost.javahg.internals.AbstractCommand;
 import com.aragost.javahg.internals.HgInputStream;
 import com.aragost.javahg.internals.RuntimeIOException;
 import com.aragost.javahg.internals.Utils;
-
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Lists;
-
 import sonia.scm.repository.Changeset;
 import sonia.scm.repository.HgConfig;
 import sonia.scm.repository.Modifications;
 import sonia.scm.repository.Person;
 
-//~--- JDK imports ------------------------------------------------------------
-
 import java.io.IOException;
-
 import java.util.List;
 
+//~--- JDK imports ------------------------------------------------------------
+
 /**
  *
  * @author Sebastian Sdorra
@@ -251,33 +248,14 @@ public abstract class AbstractChangesetCommand extends AbstractCommand
       changeset.getProperties().put(PROPERTY_CLOSE, "true");
     }
 
-    Modifications modifications = changeset.getModifications();
-
     String line = in.textUpTo('\n');
-
+    while (line.length() > 0) {
-    while (line.length() > 0)
+      if (line.startsWith("t "))
-    {
-
-      if (line.startsWith("a "))
-      {
-        modifications.getAdded().add(line.substring(2));
-      }
-      else if (line.startsWith("m "))
-      {
-        modifications.getModified().add(line.substring(2));
-      }
-      else if (line.startsWith("d "))
-      {
-        modifications.getRemoved().add(line.substring(2));
-      }
-      else if (line.startsWith("t "))
       {
         changeset.getTags().add(line.substring(2));
       }
-
       line = in.textUpTo('\n');
     }
-
     String message = in.textUpTo('\0');
 
     changeset.setDescription(message);
@@ -285,6 +263,36 @@ public abstract class AbstractChangesetCommand extends AbstractCommand
     return changeset;
   }
 
+  protected Modifications readModificationsFromStream(HgInputStream in) {
+    try {
+      boolean found = in.find(CHANGESET_PATTERN);
+      if (found) {
+        while (!in.match(CHANGESET_PATTERN)) {
+          return extractModifications(in);
+        }
+      }
+    } catch (IOException e) {
+      throw new RuntimeIOException(e);
+    }
+    return null;
+  }
+
+  private Modifications extractModifications(HgInputStream in) throws IOException {
+    Modifications modifications = new Modifications();
+    String line = in.textUpTo('\n');
+    while (line.length() > 0) {
+      if (line.startsWith("a ")) {
+        modifications.getAdded().add(line.substring(2));
+      } else if (line.startsWith("m ")) {
+        modifications.getModified().add(line.substring(2));
+      } else if (line.startsWith("d ")) {
+        modifications.getRemoved().add(line.substring(2));
+      }
+      line = in.textUpTo('\n');
+    }
+    return modifications;
+  }
+
   /**
    * Method description
    *

scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/repository/spi/javahg/HgLogChangesetCommand.java

@@ -38,14 +38,14 @@ package sonia.scm.repository.spi.javahg;
 import com.aragost.javahg.Repository;
 import com.aragost.javahg.internals.HgInputStream;
 import com.aragost.javahg.internals.Utils;
-
 import sonia.scm.repository.Changeset;
 import sonia.scm.repository.HgConfig;
-
+import sonia.scm.repository.Modifications;
-//~--- JDK imports ------------------------------------------------------------
 
 import java.util.List;
 
+//~--- JDK imports ------------------------------------------------------------
+
 /**
  *
  * @author Sebastian Sdorra
@@ -106,11 +106,22 @@ public class HgLogChangesetCommand extends AbstractChangesetCommand
    */
   public List<Changeset> execute(String... files)
   {
-    cmdAppend("--style", CHANGESET_EAGER_STYLE_PATH);
+    return readListFromStream(getHgInputStream(files, CHANGESET_EAGER_STYLE_PATH));
+  }
 
-    HgInputStream stream = launchStream(files);
+  /**
+   * Extract Modifications from the Repository files
+   *
+   * @param files repo files
+   * @return modifications
+   */
+  public Modifications extractModifications(String... files) {
+    return readModificationsFromStream(getHgInputStream(files, CHANGESET_EAGER_STYLE_PATH));
+  }
 
-    return readListFromStream(stream);
+  HgInputStream getHgInputStream(String[] files, String changesetStylePath) {
+    cmdAppend("--style", changesetStylePath);
+    return launchStream(files);
   }
 
   /**
@@ -138,11 +149,7 @@ public class HgLogChangesetCommand extends AbstractChangesetCommand
    */
   public List<Integer> loadRevisions(String... files)
   {
-    cmdAppend("--style", CHANGESET_LAZY_STYLE_PATH);
+    return loadRevisionsFromStream(getHgInputStream(files, CHANGESET_LAZY_STYLE_PATH));
-
-    HgInputStream stream = launchStream(files);
-
-    return loadRevisionsFromStream(stream);
   }
 
   /**

scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/web/HgBasicAuthenticationFilter.java

@@ -1,102 +0,0 @@
-/**
- * Copyright (c) 2010, Sebastian Sdorra All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer. 2. Redistributions in
- * binary form must reproduce the above copyright notice, this list of
- * conditions and the following disclaimer in the documentation and/or other
- * materials provided with the distribution. 3. Neither the name of SCM-Manager;
- * nor the names of its contributors may be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * http://bitbucket.org/sdorra/scm-manager
- *
- */
-
-
-
-package sonia.scm.web;
-
-//~--- non-JDK imports --------------------------------------------------------
-
-import com.google.inject.Inject;
-
-import sonia.scm.Priority;
-import sonia.scm.config.ScmConfiguration;
-import sonia.scm.filter.Filters;
-import sonia.scm.filter.WebElement;
-import sonia.scm.web.filter.AuthenticationFilter;
-
-//~--- JDK imports ------------------------------------------------------------
-
-import java.io.IOException;
-
-import java.util.Set;
-
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-
-/**
- *
- * @author Sebastian Sdorra
- */
-@Priority(Filters.PRIORITY_AUTHENTICATION)
-@WebElement(value = HgServletModule.MAPPING_HG)
-public class HgBasicAuthenticationFilter extends AuthenticationFilter
-{
-
-  /**
-   * Constructs ...
-   *
-   *
-   * @param configuration
-   * @param webTokenGenerators
-   */
-  @Inject
-  public HgBasicAuthenticationFilter(ScmConfiguration configuration,
-    Set<WebTokenGenerator> webTokenGenerators)
-  {
-    super(configuration, webTokenGenerators);
-  }
-
-  //~--- methods --------------------------------------------------------------
-
-  /**
-   * Method description
-   *
-   *
-   * @param request
-   * @param response
-   *
-   * @throws IOException
-   */
-  @Override
-  protected void sendFailedAuthenticationError(HttpServletRequest request,
-    HttpServletResponse response)
-    throws IOException
-  {
-    if (HgUtil.isHgClient(request)
-      && (configuration.isLoginAttemptLimitEnabled()))
-    {
-      response.sendError(HttpServletResponse.SC_UNAUTHORIZED);
-    }
-    else
-    {
-      super.sendFailedAuthenticationError(request, response);
-    }
-  }
-}

scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/web/HgCGIServlet.java

@@ -33,8 +33,6 @@
 
 package sonia.scm.web;
 
-//~--- non-JDK imports --------------------------------------------------------
-
 import com.google.common.base.Stopwatch;
 import com.google.common.base.Strings;
 import com.google.inject.Inject;
@@ -49,8 +47,8 @@ import sonia.scm.repository.HgHookManager;
 import sonia.scm.repository.HgPythonScript;
 import sonia.scm.repository.HgRepositoryHandler;
 import sonia.scm.repository.Repository;
-import sonia.scm.repository.RepositoryProvider;
 import sonia.scm.repository.RepositoryRequestListenerUtil;
+import sonia.scm.repository.spi.ScmProviderHttpServlet;
 import sonia.scm.security.CipherUtil;
 import sonia.scm.util.AssertUtil;
 import sonia.scm.util.HttpUtil;
@@ -68,14 +66,12 @@ import java.io.IOException;
 import java.util.Base64;
 import java.util.Enumeration;
 
-//~--- JDK imports ------------------------------------------------------------
-
 /**
  *
  * @author Sebastian Sdorra
  */
 @Singleton
-public class HgCGIServlet extends HttpServlet
+public class HgCGIServlet extends HttpServlet implements ScmProviderHttpServlet
 {
 
   /** Field description */
@@ -108,20 +104,18 @@ public class HgCGIServlet extends HttpServlet
    *
    * @param cgiExecutorFactory
    * @param configuration
-   * @param repositoryProvider
    * @param handler
    * @param hookManager
    * @param requestListenerUtil
    */
   @Inject
   public HgCGIServlet(CGIExecutorFactory cgiExecutorFactory,
-    ScmConfiguration configuration, RepositoryProvider repositoryProvider,
+    ScmConfiguration configuration,
     HgRepositoryHandler handler, HgHookManager hookManager,
     RepositoryRequestListenerUtil requestListenerUtil)
   {
     this.cgiExecutorFactory = cgiExecutorFactory;
     this.configuration = configuration;
-    this.repositoryProvider = repositoryProvider;
     this.handler = handler;
     this.hookManager = hookManager;
     this.requestListenerUtil = requestListenerUtil;
@@ -131,46 +125,11 @@ public class HgCGIServlet extends HttpServlet
 
   //~--- methods --------------------------------------------------------------
 
-  /**
-   * Method description
-   *
-   *
-   * @throws ServletException
-   */
   @Override
-  public void init() throws ServletException
+  public void service(HttpServletRequest request,
+    HttpServletResponse response, Repository repository)
   {
-
+    if (!handler.isConfigured())
-    super.init();
-  }
-
-  /**
-   * Method description
-   *
-   *
-   * @param request
-   * @param response
-   *
-   * @throws IOException
-   * @throws ServletException
-   */
-  @Override
-  protected void service(HttpServletRequest request,
-    HttpServletResponse response)
-    throws ServletException, IOException
-  {
-    Repository repository = repositoryProvider.get();
-
-    if (repository == null)
-    {
-      if (logger.isDebugEnabled())
-      {
-        logger.debug("no hg repository found at {}", request.getRequestURI());
-      }
-
-      response.setStatus(HttpServletResponse.SC_NOT_FOUND);
-    }
-    else if (!handler.isConfigured())
     {
       exceptionHandler.sendFormattedError(request, response,
         HgCGIExceptionHandler.ERROR_NOT_CONFIGURED);
@@ -379,9 +338,6 @@ public class HgCGIServlet extends HttpServlet
   /** Field description */
   private final HgHookManager hookManager;
 
-  /** Field description */
-  private final RepositoryProvider repositoryProvider;
-
   /** Field description */
   private final RepositoryRequestListenerUtil requestListenerUtil;
 }

scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/web/HgCGIServletProvider.java

@@ -0,0 +1,23 @@
+package sonia.scm.web;
+
+import com.google.inject.Inject;
+import sonia.scm.repository.HgRepositoryHandler;
+import sonia.scm.repository.spi.ScmProviderHttpServlet;
+import sonia.scm.repository.spi.ScmProviderHttpServletProvider;
+
+import javax.inject.Provider;
+
+public class HgCGIServletProvider extends ScmProviderHttpServletProvider {
+
+  @Inject
+  private Provider<HgCGIServlet> servletProvider;
+
+  public HgCGIServletProvider() {
+    super(HgRepositoryHandler.TYPE_NAME);
+  }
+
+  @Override
+  protected ScmProviderHttpServlet getRootServlet() {
+    return servletProvider.get();
+  }
+}

scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/web/HgPermissionFilter.java

@@ -33,53 +33,31 @@
 
 package sonia.scm.web;
 
-//~--- non-JDK imports --------------------------------------------------------
-
 import com.google.common.collect.ImmutableSet;
-import com.google.inject.Inject;
-
-import sonia.scm.Priority;
 import sonia.scm.config.ScmConfiguration;
-import sonia.scm.filter.Filters;
+import sonia.scm.repository.spi.ScmProviderHttpServlet;
-import sonia.scm.filter.WebElement;
+import sonia.scm.web.filter.PermissionFilter;
-import sonia.scm.repository.RepositoryProvider;
-import sonia.scm.web.filter.ProviderPermissionFilter;
-
-//~--- JDK imports ------------------------------------------------------------
-
-import java.util.Set;
 
 import javax.servlet.http.HttpServletRequest;
+import java.util.Set;
 
 /**
  * Permission filter for mercurial repositories.
  * 
  * @author Sebastian Sdorra
  */
-@Priority(Filters.PRIORITY_AUTHORIZATION)
+public class HgPermissionFilter extends PermissionFilter
-@WebElement(value = HgServletModule.MAPPING_HG)
-public class HgPermissionFilter extends ProviderPermissionFilter
 {
   
   private static final Set<String> READ_METHODS = ImmutableSet.of("GET", "HEAD", "OPTIONS", "TRACE");
 
-  /**
+  public HgPermissionFilter(ScmConfiguration configuration, ScmProviderHttpServlet delegate)
-   * Constructs a new instance.
-   *
-   * @param configuration scm configuration
-   * @param repositoryProvider repository provider
-   */
-  @Inject
-  public HgPermissionFilter(ScmConfiguration configuration,
-    RepositoryProvider repositoryProvider)
   {
-    super(configuration, repositoryProvider);
+    super(configuration, delegate);
   }
 
-  //~--- get methods ----------------------------------------------------------
-
   @Override
-  protected boolean isWriteRequest(HttpServletRequest request)
+  public boolean isWriteRequest(HttpServletRequest request)
   {
     return !READ_METHODS.contains(request.getMethod());
   }

scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/web/HgPermissionFilterFactory.java

@@ -0,0 +1,30 @@
+package sonia.scm.web;
+
+import sonia.scm.config.ScmConfiguration;
+import sonia.scm.plugin.Extension;
+import sonia.scm.repository.HgRepositoryHandler;
+import sonia.scm.repository.spi.ScmProviderHttpServlet;
+import sonia.scm.repository.spi.ScmProviderHttpServletDecoratorFactory;
+
+import javax.inject.Inject;
+
+@Extension
+public class HgPermissionFilterFactory implements ScmProviderHttpServletDecoratorFactory {
+
+  private final ScmConfiguration configuration;
+
+  @Inject
+  public HgPermissionFilterFactory(ScmConfiguration configuration) {
+    this.configuration = configuration;
+  }
+
+  @Override
+  public boolean handlesScmType(String type) {
+    return HgRepositoryHandler.TYPE_NAME.equals(type);
+  }
+
+  @Override
+  public ScmProviderHttpServlet createDecorator(ScmProviderHttpServlet delegate) {
+    return new HgPermissionFilter(configuration, delegate);
+  }
+}

scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/web/HgScmProtocolProviderWrapper.java

@@ -0,0 +1,25 @@
+package sonia.scm.web;
+
+import sonia.scm.api.v2.resources.ScmPathInfoStore;
+import sonia.scm.config.ScmConfiguration;
+import sonia.scm.plugin.Extension;
+import sonia.scm.repository.HgRepositoryHandler;
+import sonia.scm.repository.spi.InitializingHttpScmProtocolWrapper;
+
+import javax.inject.Inject;
+import javax.inject.Provider;
+import javax.inject.Singleton;
+
+@Singleton
+@Extension
+public class HgScmProtocolProviderWrapper extends InitializingHttpScmProtocolWrapper {
+  @Inject
+  public HgScmProtocolProviderWrapper(HgCGIServletProvider servletProvider, Provider<ScmPathInfoStore> uriInfoStore, ScmConfiguration scmConfiguration) {
+    super(servletProvider, uriInfoStore, scmConfiguration);
+  }
+
+  @Override
+  public String getType() {
+    return HgRepositoryHandler.TYPE_NAME;
+  }
+}

scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/web/HgServletModule.java

@@ -81,8 +81,5 @@ public class HgServletModule extends ServletModule
 
     // bind servlets
     serve(MAPPING_HOOK).with(HgHookCallbackServlet.class);
-
-    // register hg cgi servlet
-    serve(MAPPING_HG).with(HgCGIServlet.class);
   }
 }

scm-plugins/scm-hg-plugin/src/test/java/sonia/scm/api/v2/resources/HgConfigInstallationsResourceTest.java

@@ -43,7 +43,7 @@ public class HgConfigInstallationsResourceTest {
   private final URI baseUri = URI.create("/");
 
   @Mock(answer = Answers.RETURNS_DEEP_STUBS)
-  private UriInfoStore uriInfoStore;
+  private ScmPathInfoStore scmPathInfoStore;
 
   @InjectMocks
   private HgConfigInstallationsToDtoMapper mapper;
@@ -61,7 +61,7 @@ public class HgConfigInstallationsResourceTest {
       new HgConfigResource(null, null, null, null,
                            null, resourceProvider));
 
-    when(uriInfoStore.get().getBaseUri()).thenReturn(baseUri);
+    when(scmPathInfoStore.get().getApiRestUri()).thenReturn(baseUri);
   }
 
   @Test

scm-plugins/scm-hg-plugin/src/test/java/sonia/scm/api/v2/resources/HgConfigInstallationsToDtoMapperTest.java

@@ -23,7 +23,7 @@ public class HgConfigInstallationsToDtoMapperTest {
   private URI baseUri = URI.create("http://example.com/base/");
 
   @Mock(answer = Answers.RETURNS_DEEP_STUBS)
-  private UriInfoStore uriInfoStore;
+  private ScmPathInfoStore scmPathInfoStore;
 
   @InjectMocks
   private HgConfigInstallationsToDtoMapper mapper;
@@ -34,7 +34,7 @@ public class HgConfigInstallationsToDtoMapperTest {
 
   @Before
   public void init() {
-    when(uriInfoStore.get().getBaseUri()).thenReturn(baseUri);
+    when(scmPathInfoStore.get().getApiRestUri()).thenReturn(baseUri);
     expectedBaseUri = baseUri.resolve(HgConfigResource.HG_CONFIG_PATH_V2 + "/installations/" + expectedPath);
   }
 

scm-plugins/scm-hg-plugin/src/test/java/sonia/scm/api/v2/resources/HgConfigPackageResourceTest.java

@@ -57,7 +57,7 @@ public class HgConfigPackageResourceTest {
   private final URI baseUri = java.net.URI.create("/");
 
   @Mock(answer = Answers.RETURNS_DEEP_STUBS)
-  private UriInfoStore uriInfoStore;
+  private ScmPathInfoStore scmPathInfoStore;
 
   @InjectMocks
   private HgConfigPackagesToDtoMapperImpl mapper;
@@ -81,7 +81,7 @@ public class HgConfigPackageResourceTest {
   public void prepareEnvironment() {
     setupResources();
 
-    when(uriInfoStore.get().getBaseUri()).thenReturn(baseUri);
+    when(scmPathInfoStore.get().getApiRestUri()).thenReturn(baseUri);
 
     when(hgPackageReader.getPackages().getPackages()).thenReturn(createPackages());
   }

scm-plugins/scm-hg-plugin/src/test/java/sonia/scm/api/v2/resources/HgConfigPackagesToDtoMapperTest.java

@@ -1,6 +1,5 @@
 package sonia.scm.api.v2.resources;
 
-import de.otto.edison.hal.HalRepresentation;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -13,12 +12,10 @@ import sonia.scm.installer.HgPackages;
 
 import java.net.URI;
 import java.util.Arrays;
-import java.util.Collection;
 import java.util.List;
 
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
 import static org.mockito.Mockito.when;
 import static sonia.scm.api.v2.resources.HgConfigTests.assertEqualsPackage;
 import static sonia.scm.api.v2.resources.HgConfigTests.createPackage;
@@ -29,7 +26,7 @@ public class HgConfigPackagesToDtoMapperTest {
   private URI baseUri = URI.create("http://example.com/base/");
 
   @Mock(answer = Answers.RETURNS_DEEP_STUBS)
-  private UriInfoStore uriInfoStore;
+  private ScmPathInfoStore scmPathInfoStore;
 
   @InjectMocks
   private HgConfigPackagesToDtoMapperImpl mapper;
@@ -38,7 +35,7 @@ public class HgConfigPackagesToDtoMapperTest {
 
   @Before
   public void init() {
-    when(uriInfoStore.get().getBaseUri()).thenReturn(baseUri);
+    when(scmPathInfoStore.get().getApiRestUri()).thenReturn(baseUri);
     expectedBaseUri = baseUri.resolve(HgConfigResource.HG_CONFIG_PATH_V2 + "/packages");
   }
 

scm-plugins/scm-hg-plugin/src/test/java/sonia/scm/api/v2/resources/HgConfigResourceTest.java

@@ -54,7 +54,7 @@ public class HgConfigResourceTest {
   private HgConfigDtoToHgConfigMapperImpl dtoToConfigMapper;
 
   @Mock(answer = Answers.RETURNS_DEEP_STUBS)
-  private UriInfoStore uriInfoStore;
+  private ScmPathInfoStore scmPathInfoStore;
 
   @InjectMocks
   private HgConfigToHgConfigDtoMapperImpl configToDtoMapper;
@@ -79,7 +79,7 @@ public class HgConfigResourceTest {
       new HgConfigResource(dtoToConfigMapper, configToDtoMapper, repositoryHandler, packagesResource,
                            autoconfigResource, installationsResource);
     dispatcher.getRegistry().addSingletonResource(gitConfigResource);
-    when(uriInfoStore.get().getBaseUri()).thenReturn(baseUri);
+    when(scmPathInfoStore.get().getApiRestUri()).thenReturn(baseUri);
   }
 
   @Test

scm-plugins/scm-hg-plugin/src/test/java/sonia/scm/api/v2/resources/HgConfigToHgConfigDtoMapperTest.java

@@ -29,7 +29,7 @@ public class HgConfigToHgConfigDtoMapperTest {
   private URI baseUri = URI.create("http://example.com/base/");
 
   @Mock(answer = Answers.RETURNS_DEEP_STUBS)
-  private UriInfoStore uriInfoStore;
+  private ScmPathInfoStore scmPathInfoStore;
 
   @InjectMocks
   private HgConfigToHgConfigDtoMapperImpl mapper;
@@ -41,7 +41,7 @@ public class HgConfigToHgConfigDtoMapperTest {
 
   @Before
   public void init() {
-    when(uriInfoStore.get().getBaseUri()).thenReturn(baseUri);
+    when(scmPathInfoStore.get().getApiRestUri()).thenReturn(baseUri);
     expectedBaseUri = baseUri.resolve(HgConfigResource.HG_CONFIG_PATH_V2);
     subjectThreadState.bind();
     ThreadContext.bind(subject);

scm-plugins/scm-hg-plugin/src/test/java/sonia/scm/repository/client/spi/HgCommitCommand.java

@@ -32,11 +32,11 @@ package sonia.scm.repository.client.spi;
 
 import com.aragost.javahg.Repository;
 import com.google.common.collect.Lists;
-import java.io.IOException;
 import sonia.scm.repository.Changeset;
-import sonia.scm.repository.Modifications;
 import sonia.scm.repository.Person;
 
+import java.io.IOException;
+
 /**
  * Mercurial implementation of the {@link CommitCommand}.
  * 
@@ -70,9 +70,6 @@ public class HgCommitCommand implements CommitCommand
     
     changeset.setBranches(Lists.newArrayList(c.getBranch()));
     changeset.setTags(c.tags());
-    changeset.setModifications(
-      new Modifications(c.getAddedFiles(), c.getModifiedFiles(), c.getDeletedFiles())
-    );
     return changeset;
   }
   

scm-plugins/scm-hg-plugin/src/test/java/sonia/scm/repository/spi/HgLogCommandTest.java

@@ -39,6 +39,9 @@ import org.junit.Test;
 import sonia.scm.repository.Changeset;
 import sonia.scm.repository.ChangesetPagingResult;
 import sonia.scm.repository.Modifications;
+import sonia.scm.repository.RevisionNotFoundException;
+
+import java.io.IOException;
 
 import static org.hamcrest.Matchers.contains;
 import static org.junit.Assert.assertEquals;
@@ -133,27 +136,28 @@ public class HgLogCommandTest extends AbstractHgCommandTestBase
   }
 
   @Test
-  public void testGetCommit() {
+  public void testGetCommit() throws IOException, RevisionNotFoundException {
     HgLogCommand command = createComamnd();
+    String revision = "a9bacaf1b7fa0cebfca71fed4e59ed69a6319427";
     Changeset c =
-      command.getChangeset("a9bacaf1b7fa0cebfca71fed4e59ed69a6319427");
+      command.getChangeset(revision);
 
     assertNotNull(c);
-    assertEquals("a9bacaf1b7fa0cebfca71fed4e59ed69a6319427", c.getId());
+    assertEquals(revision, c.getId());
     assertEquals("added a and b files", c.getDescription());
     checkDate(c.getDate());
     assertEquals("Douglas Adams", c.getAuthor().getName());
     assertEquals("douglas.adams@hitchhiker.com", c.getAuthor().getMail());
     assertEquals("added a and b files", c.getDescription());
+    ModificationsCommand modificationsCommand = new HgModificationsCommand(cmdContext, repository);
+    Modifications modifications = modificationsCommand.getModifications(revision);
 
-    Modifications mods = c.getModifications();
+    assertNotNull(modifications);
-
+    assertTrue("modified list should be empty", modifications.getModified().isEmpty());
-    assertNotNull(mods);
+    assertTrue("removed list should be empty", modifications.getRemoved().isEmpty());
-    assertTrue("modified list should be empty", mods.getModified().isEmpty());
+    assertFalse("added list should not be empty", modifications.getAdded().isEmpty());
-    assertTrue("removed list should be empty", mods.getRemoved().isEmpty());
+    assertEquals(2, modifications.getAdded().size());
-    assertFalse("added list should not be empty", mods.getAdded().isEmpty());
+    assertThat(modifications.getAdded(), contains("a.txt", "b.txt"));
-    assertEquals(2, mods.getAdded().size());
-    assertThat(mods.getAdded(), contains("a.txt", "b.txt"));
   }
 
   @Test

scm-plugins/scm-hg-plugin/src/test/java/sonia/scm/repository/spi/HgModificationsCommandTest.java

@@ -0,0 +1,111 @@
+package sonia.scm.repository.spi;
+
+import com.aragost.javahg.Changeset;
+import com.aragost.javahg.commands.RemoveCommand;
+import org.junit.Before;
+import org.junit.Test;
+import sonia.scm.repository.HgTestUtil;
+import sonia.scm.repository.Modifications;
+
+import java.io.File;
+import java.util.function.Consumer;
+
+import static org.assertj.core.api.Java6Assertions.assertThat;
+
+public class HgModificationsCommandTest extends IncomingOutgoingTestBase {
+
+
+  private HgModificationsCommand outgoingModificationsCommand;
+
+  @Before
+  public void init() {
+    HgCommandContext outgoingContext = new HgCommandContext(HgTestUtil.createHookManager(), handler, outgoingRepository, outgoingDirectory);
+    outgoingModificationsCommand = new HgModificationsCommand(outgoingContext, outgoingRepository);
+  }
+
+  @Test
+  public void shouldReadAddedFiles() throws Exception {
+    String fileName = "a.txt";
+    writeNewFile(outgoing, outgoingDirectory, fileName, "bal bla");
+    Changeset changeset = commit(outgoing, "added a.txt");
+    String revision = String.valueOf(changeset.getRevision());
+    Consumer<Modifications> assertModifications = assertAddedFile(fileName);
+    assertModifications.accept(outgoingModificationsCommand.getModifications(revision));
+  }
+
+  @Test
+  public void shouldReadModifiedFiles() throws Exception {
+    String fileName = "a.txt";
+    writeNewFile(outgoing, outgoingDirectory, fileName, "bal bla");
+    commit(outgoing, "added a.txt");
+    writeNewFile(outgoing, outgoingDirectory, fileName, "new content");
+    Changeset changeset = commit(outgoing, "modified a.txt");
+    String revision = String.valueOf(changeset.getRevision());
+    Consumer<Modifications> assertModifications = assertModifiedFiles(fileName);
+    assertModifications.accept(outgoingModificationsCommand.getModifications(revision));
+  }
+
+  @Test
+  public void shouldReadRemovedFiles() throws Exception {
+    String fileName = "a.txt";
+    writeNewFile(outgoing, outgoingDirectory, fileName, "bal bla");
+    commit(outgoing, "added a.txt");
+    File file = new File(outgoingDirectory, fileName);
+    file.delete();
+    RemoveCommand.on(outgoing).execute(file);
+    Changeset changeset = commit(outgoing, "removed a.txt");
+    String revision = String.valueOf(changeset.getRevision());
+    Consumer<Modifications> assertModifications = assertRemovedFiles(fileName);
+    assertModifications.accept(outgoingModificationsCommand.getModifications(revision));
+  }
+
+
+  Consumer<Modifications> assertRemovedFiles(String fileName) {
+    return (modifications) -> {
+      assertThat(modifications).isNotNull();
+      assertThat(modifications.getAdded())
+        .as("added files modifications")
+        .hasSize(0);
+      assertThat(modifications.getModified())
+        .as("modified files modifications")
+        .hasSize(0);
+      assertThat(modifications.getRemoved())
+        .as("removed files modifications")
+        .hasSize(1)
+        .containsOnly(fileName);
+    };
+  }
+
+
+  Consumer<Modifications> assertModifiedFiles(String file) {
+    return (modifications) -> {
+      assertThat(modifications).isNotNull();
+      assertThat(modifications.getAdded())
+        .as("added files modifications")
+        .hasSize(0);
+      assertThat(modifications.getModified())
+        .as("modified files modifications")
+        .hasSize(1)
+        .containsOnly(file);
+      assertThat(modifications.getRemoved())
+        .as("removed files modifications")
+        .hasSize(0);
+    };
+  }
+
+  Consumer<Modifications> assertAddedFile(String addedFile) {
+    return (modifications) -> {
+      assertThat(modifications).isNotNull();
+      assertThat(modifications.getAdded())
+        .as("added files modifications")
+        .hasSize(1)
+        .containsOnly(addedFile);
+      assertThat(modifications.getModified())
+        .as("modified files modifications")
+        .hasSize(0);
+      assertThat(modifications.getRemoved())
+        .as("removed files modifications")
+        .hasSize(0);
+    };
+  }
+}