merge

2025-11-07 22:15:45 +01:00 · 2019-03-13 21:53:10 +01:00
parent 13e7ae24bd 4312301c35
commit df480b3a49
64 changed files with 1655 additions and 806 deletions
--- a/scm-core/src/main/java/sonia/scm/config/ScmConfiguration.java
+++ b/scm-core/src/main/java/sonia/scm/config/ScmConfiguration.java
@@ -184,8 +184,8 @@ public class ScmConfiguration implements Configuration {
  @XmlElement(name = "xsrf-protection")
  private boolean enabledXsrfProtection = true;

-  @XmlElement(name = "default-namespace-strategy")
-  private String defaultNamespaceStrategy = "sonia.scm.repository.DefaultNamespaceStrategy";
+  @XmlElement(name = "namespace-strategy")
+  private String namespaceStrategy = "UsernameNamespaceStrategy";


  /**
@@ -227,7 +227,7 @@ public class ScmConfiguration implements Configuration {
    this.loginAttemptLimit = other.loginAttemptLimit;
    this.loginAttemptLimitTimeout = other.loginAttemptLimitTimeout;
    this.enabledXsrfProtection = other.enabledXsrfProtection;
-    this.defaultNamespaceStrategy = other.defaultNamespaceStrategy;
+    this.namespaceStrategy = other.namespaceStrategy;
  }

  public Set<String> getAdminGroups() {
@@ -366,8 +366,8 @@ public class ScmConfiguration implements Configuration {
    return loginAttemptLimit > 0;
  }

-  public String getDefaultNamespaceStrategy() {
-    return defaultNamespaceStrategy;
+  public String getNamespaceStrategy() {
+    return namespaceStrategy;
  }


@@ -501,8 +501,8 @@ public class ScmConfiguration implements Configuration {
    this.enabledXsrfProtection = enabledXsrfProtection;
  }

-  public void setDefaultNamespaceStrategy(String defaultNamespaceStrategy) {
-    this.defaultNamespaceStrategy = defaultNamespaceStrategy;
+  public void setNamespaceStrategy(String namespaceStrategy) {
+    this.namespaceStrategy = namespaceStrategy;
  }

  @Override
--- a/scm-core/src/main/java/sonia/scm/repository/Repository.java
+++ b/scm-core/src/main/java/sonia/scm/repository/Repository.java
@@ -248,7 +248,8 @@ public class Repository extends BasicPropertiesAware implements ModelObject, Per
  /**
   * Returns true if the {@link Repository} is valid.
   * <ul>
-   * <li>The name is not empty and contains only A-z, 0-9, _, -, /</li>
+   * <li>The namespace is valid</li>
+   * <li>The name is valid</li>
   * <li>The type is not empty</li>
   * <li>The contact is empty or contains a valid email address</li>
   * </ul>
@@ -257,9 +258,10 @@ public class Repository extends BasicPropertiesAware implements ModelObject, Per
   */
  @Override
  public boolean isValid() {
-    return ValidationUtil.isRepositoryNameValid(name) && Util.isNotEmpty(type)
-      && ((Util.isEmpty(contact))
-      || ValidationUtil.isMailAddressValid(contact));
+    return ValidationUtil.isRepositoryNameValid(namespace)
+      && ValidationUtil.isRepositoryNameValid(name)
+      && Util.isNotEmpty(type)
+      && ((Util.isEmpty(contact)) || ValidationUtil.isMailAddressValid(contact));
  }

  /**
--- a/scm-core/src/main/java/sonia/scm/util/ValidationUtil.java
+++ b/scm-core/src/main/java/sonia/scm/util/ValidationUtil.java
@@ -35,14 +35,12 @@ package sonia.scm.util;

 //~--- non-JDK imports --------------------------------------------------------

-import com.google.common.base.Splitter;
-
 import sonia.scm.Validateable;

-//~--- JDK imports ------------------------------------------------------------
-
 import java.util.regex.Pattern;

+//~--- JDK imports ------------------------------------------------------------
+
 /**
 *
 * @author Sebastian Sdorra
@@ -52,15 +50,16 @@ public final class ValidationUtil

  /** Field description */
  private static final String REGEX_MAIL =
-    "^[A-z0-9][\\w.-]*@[A-z0-9][\\w\\-\\.]*\\.[A-z0-9][A-z0-9-]+$";
+    "^[A-Za-z0-9][\\w.-]*@[A-Za-z0-9][\\w\\-\\.]*\\.[A-Za-z0-9][A-Za-z0-9-]+$";

  /** Field description */
  private static final String REGEX_NAME =
-    "^[A-z0-9\\.\\-_@]|[^ ]([A-z0-9\\.\\-_@ ]*[A-z0-9\\.\\-_@]|[^ ])?$";
+    "^[A-Za-z0-9\\.\\-_@]|[^ ]([A-Za-z0-9\\.\\-_@ ]*[A-Za-z0-9\\.\\-_@]|[^ ])?$";
+
+  public static final String REGEX_REPOSITORYNAME = "(?!^\\.\\.$)(?!^\\.$)(?!.*[\\\\\\[\\]])^[A-Za-z0-9\\.][A-Za-z0-9\\.\\-_]*$";

  /** Field description */
-  private static final String REGEX_REPOSITORYNAME =
-    "(?!^\\.\\.$)(?!^\\.$)(?!.*[\\\\\\[\\]])^[A-z0-9\\.][A-z0-9\\.\\-_/]*$";
+  private static final Pattern PATTERN_REPOSITORYNAME = Pattern.compile(REGEX_REPOSITORYNAME);

  //~--- constructors ---------------------------------------------------------

@@ -142,37 +141,15 @@ public final class ValidationUtil
  }

  /**
-   * Method description
+   * Returns {@code true} if the repository name is valid.
   *
-   *
-   * @param name
+   * @param name repository name
   * @since 1.9
   *
-   * @return
+   * @return {@code true} if repository name is valid
   */
-  public static boolean isRepositoryNameValid(String name)
-  {
-    Pattern pattern = Pattern.compile(REGEX_REPOSITORYNAME);
-    boolean result = true;
-
-    if (Util.isNotEmpty(name))
-    {
-      for (String p : Splitter.on('/').split(name))
-      {
-        if (!pattern.matcher(p).matches())
-        {
-          result = false;
-
-          break;
-        }
-      }
-    }
-    else
-    {
-      result = false;
-    }
-
-    return result;
+  public static boolean isRepositoryNameValid(String name) {
+    return PATTERN_REPOSITORYNAME.matcher(name).matches();
  }

  /**
--- a/scm-core/src/main/java/sonia/scm/web/VndMediaType.java
+++ b/scm-core/src/main/java/sonia/scm/web/VndMediaType.java
@@ -46,6 +46,8 @@ public class VndMediaType {
  public static final String MERGE_RESULT = PREFIX + "mergeResult" + SUFFIX;
  public static final String MERGE_COMMAND = PREFIX + "mergeCommand" + SUFFIX;

+  public static final String NAMESPACE_STRATEGIES = PREFIX + "namespaceStrategies" + SUFFIX;
+
  public static final String ME = PREFIX + "me" + SUFFIX;
  public static final String SOURCE = PREFIX + "source" + SUFFIX;
  public static final String ERROR_TYPE = PREFIX + "error" + SUFFIX;
--- a/scm-core/src/test/java/sonia/scm/util/ValidationUtilTest.java
+++ b/scm-core/src/test/java/sonia/scm/util/ValidationUtilTest.java
@@ -143,51 +143,21 @@ public class ValidationUtilTest
    assertFalse(ValidationUtil.isNotContaining("test", "t"));
  }

-  /**
-   * Method description
-   *
-   */
  @Test
-  public void testIsRepositoryNameValid()
-  {
-    assertTrue(ValidationUtil.isRepositoryNameValid("scm"));
-    assertTrue(ValidationUtil.isRepositoryNameValid("scm/main"));
-    assertTrue(ValidationUtil.isRepositoryNameValid("scm/plugins/git-plugin"));
-    assertTrue(ValidationUtil.isRepositoryNameValid("s"));
-    assertTrue(ValidationUtil.isRepositoryNameValid("sc"));
-    assertTrue(ValidationUtil.isRepositoryNameValid(".scm/plugins"));
-
-    // issue 142
-    assertFalse(ValidationUtil.isRepositoryNameValid("."));
-    assertFalse(ValidationUtil.isRepositoryNameValid("/"));
-    assertFalse(ValidationUtil.isRepositoryNameValid("scm/plugins/."));
-    assertFalse(ValidationUtil.isRepositoryNameValid("scm/../plugins"));
-    assertFalse(ValidationUtil.isRepositoryNameValid("scm/main/"));
-    assertFalse(ValidationUtil.isRepositoryNameValid("/scm/main/"));
-
-    // issue 144
-    assertFalse(ValidationUtil.isRepositoryNameValid("scm/./main"));
-    assertFalse(ValidationUtil.isRepositoryNameValid("scm//main"));
-
-    // issue 148
-    //J-
+  public void testIsRepositoryNameValid() {
    String[] validPaths = {
      "scm",
-      "scm/main",
-      "scm/plugins/git-plugin",
      "s",
      "sc",
-      ".scm/plugins",
      ".hiddenrepo",
      "b.",
      "...",
      "..c",
      "d..",
-      "a/b..",
-      "a/..b",
-      "a..c",
+      "a..c"
    };

+    // issue 142, 144 and 148
    String[] invalidPaths = {
      ".",
      "/",
@@ -228,17 +198,22 @@ public class ValidationUtilTest
      "abc)abc",
      "abc[abc",
      "abc]abc",
-      "abc|abc"
+      "abc|abc",
+      "scm/main",
+      "scm/plugins/git-plugin",
+      ".scm/plugins",
+      "a/b..",
+      "a/..b",
+      "scm/main",
+      "scm/plugins/git-plugin",
+      "scm/plugins/git-plugin"
    };
-    //J+

-    for (String path : validPaths)
-    {
+    for (String path : validPaths) {
      assertTrue(ValidationUtil.isRepositoryNameValid(path));
    }

-    for (String path : invalidPaths)
-    {
+    for (String path : invalidPaths) {
      assertFalse(ValidationUtil.isRepositoryNameValid(path));
    }
  }
--- a/scm-ui-components/packages/ui-components/package.json
+++ b/scm-ui-components/packages/ui-components/package.json
@@ -36,7 +36,9 @@
    "react-i18next": "^7.11.0",
    "react-jss": "^8.6.1",
    "react-router-dom": "^4.3.1",
-    "react-select": "^2.1.2"
+    "react-select": "^2.1.2",
+    "react-markdown": "^4.0.6",
+    "react-syntax-highlighter": "^10.2.0"
  },
  "resolutions": {
    "gitdiff-parser": "https://github.com/cloudogu/gitdiff-parser#3a72da4a8e3d9bfb4b9e01a43e85628c19f26cc4"
--- a/scm-ui-components/packages/ui-components/src/MarkdownView.js
+++ b/scm-ui-components/packages/ui-components/src/MarkdownView.js
@@ -0,0 +1,45 @@
+//@flow
+import React from "react";
+import SyntaxHighlighter from "./SyntaxHighlighter";
+import Markdown from "react-markdown/with-html";
+import {binder} from "@scm-manager/ui-extensions";
+
+type Props = {
+  content: string,
+  renderContext?: Object,
+  renderers?: Object,
+};
+
+class MarkdownView extends React.Component<Props> {
+
+  render() {
+    const {content, renderers, renderContext} = this.props;
+
+    const rendererFactory = binder.getExtension("markdown-renderer-factory");
+    let rendererList = renderers;
+
+    if (rendererFactory){
+      rendererList = rendererFactory(renderContext);
+    }
+
+    if (!rendererList){
+      rendererList = {};
+    }
+
+    if (!rendererList.code){
+      rendererList.code = SyntaxHighlighter;
+    }
+
+    return (
+      <Markdown
+        className="content"
+        skipHtml={true}
+        escapeHtml={true}
+        source={content}
+        renderers={rendererList}
+      />
+    );
+  }
+}
+
+export default MarkdownView;
--- a/scm-ui-components/packages/ui-components/src/SyntaxHighlighter.js
+++ b/scm-ui-components/packages/ui-components/src/SyntaxHighlighter.js
@@ -0,0 +1,26 @@
+// @flow
+import React from "react";
+import ReactSyntaxHighlighter from "react-syntax-highlighter";
+import { arduinoLight } from "react-syntax-highlighter/dist/styles/hljs";
+
+type Props = {
+  language: string,
+  value: string
+};
+
+class SyntaxHighlighter extends React.Component<Props> {
+
+  render() {
+    return (
+      <ReactSyntaxHighlighter
+        showLineNumbers="false"
+        language={this.props.language}
+        style={arduinoLight}
+      >
+        {this.props.value}
+      </ReactSyntaxHighlighter>
+    );
+  }
+}
+
+export default SyntaxHighlighter;
--- a/scm-ui-components/packages/ui-components/src/forms/MarkdownView.js
+++ b/scm-ui-components/packages/ui-components/src/forms/MarkdownView.js
@@ -1,20 +0,0 @@
-//@flow
-import React from "react";
-
-type Props = {
-  content: string
-};
-
-class MarkdownView extends React.Component<Props> {
-
-  render() {
-    const {content } = this.props;
-    return (
-      <div>
-        {content}
-      </div>
-    );
-  }
-}
-
-export default MarkdownView;
--- a/scm-ui-components/packages/ui-components/src/forms/index.js
+++ b/scm-ui-components/packages/ui-components/src/forms/index.js
@@ -11,5 +11,4 @@ export { default as Textarea } from "./Textarea.js";
 export { default as PasswordConfirmation } from "./PasswordConfirmation.js";
 export { default as LabelWithHelpIcon } from "./LabelWithHelpIcon.js";
 export { default as DropDown } from "./DropDown.js";
-export { default as MarkdownView } from "./MarkdownView.js";

--- a/scm-ui-components/packages/ui-components/src/index.js
+++ b/scm-ui-components/packages/ui-components/src/index.js
@@ -25,6 +25,8 @@ export { default as Tooltip } from "./Tooltip";
 export { getPageFromMatch } from "./urls";
 export { default as Autocomplete} from "./Autocomplete";
 export { default as BranchSelector } from "./BranchSelector";
+export { default as MarkdownView } from "./MarkdownView";
+export { default as SyntaxHighlighter } from "./SyntaxHighlighter";
 export { default as ErrorBoundary } from "./ErrorBoundary";

 export { apiClient } from "./apiclient.js";
--- a/scm-ui-components/packages/ui-components/yarn.lock
+++ b/scm-ui-components/packages/ui-components/yarn.lock
@@ -582,6 +582,12 @@
  dependencies:
    regenerator-runtime "^0.12.0"

+"@babel/runtime@^7.3.1":
+  version "7.3.4"
+  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.3.4.tgz#73d12ba819e365fcf7fd152aed56d6df97d21c83"
+  dependencies:
+    regenerator-runtime "^0.12.0"
+
 "@babel/template@^7.1.0", "@babel/template@^7.1.2":
  version "7.1.2"
  resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.1.2.tgz#090484a574fef5a2d2d7726a674eceda5c5b5644"
@@ -1291,6 +1297,10 @@ backo2@1.0.2:
  version "1.0.2"
  resolved "https://registry.yarnpkg.com/backo2/-/backo2-1.0.2.tgz#31ab1ac8b129363463e35b3ebb69f4dfcfba7947"

+bail@^1.0.0:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/bail/-/bail-1.0.3.tgz#63cfb9ddbac829b02a3128cd53224be78e6c21a3"
+
 balanced-match@^1.0.0:
  version "1.0.0"
  resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
@@ -1787,6 +1797,18 @@ chalk@^2.0.0, chalk@^2.0.1, chalk@^2.1.0:
    escape-string-regexp "^1.0.5"
    supports-color "^5.3.0"

+character-entities-legacy@^1.0.0:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/character-entities-legacy/-/character-entities-legacy-1.1.2.tgz#7c6defb81648498222c9855309953d05f4d63a9c"
+
+character-entities@^1.0.0:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/character-entities/-/character-entities-1.2.2.tgz#58c8f371c0774ef0ba9b2aca5f00d8f100e6e363"
+
+character-reference-invalid@^1.0.0:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/character-reference-invalid/-/character-reference-invalid-1.1.2.tgz#21e421ad3d84055952dab4a43a04e73cd425d3ed"
+
 chardet@^0.7.0:
  version "0.7.0"
  resolved "https://registry.yarnpkg.com/chardet/-/chardet-0.7.0.tgz#90094849f0937f2eedc2425d0d28a9e5f0cbad9e"
@@ -1888,6 +1910,14 @@ cli-width@^2.0.0:
  version "2.2.0"
  resolved "https://registry.yarnpkg.com/cli-width/-/cli-width-2.2.0.tgz#ff19ede8a9a5e579324147b0c11f0fbcbabed639"

+clipboard@^2.0.0:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/clipboard/-/clipboard-2.0.4.tgz#836dafd66cf0fea5d71ce5d5b0bf6e958009112d"
+  dependencies:
+    good-listener "^1.2.2"
+    select "^1.1.2"
+    tiny-emitter "^2.0.0"
+
 cliui@^3.2.0:
  version "3.2.0"
  resolved "https://registry.yarnpkg.com/cliui/-/cliui-3.2.0.tgz#120601537a916d29940f934da3b48d585a39213d"
@@ -1944,6 +1974,10 @@ code-point-at@^1.0.0:
  version "1.1.0"
  resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"

+collapse-white-space@^1.0.2:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/collapse-white-space/-/collapse-white-space-1.0.4.tgz#ce05cf49e54c3277ae573036a26851ba430a0091"
+
 collection-visit@^1.0.0:
  version "1.0.0"
  resolved "https://registry.yarnpkg.com/collection-visit/-/collection-visit-1.0.0.tgz#4bc0373c164bc3291b4d368c829cf1a80a59dca0"
@@ -1988,6 +2022,12 @@ combined-stream@^1.0.5, combined-stream@^1.0.6, combined-stream@~1.0.5, combined
  dependencies:
    delayed-stream "~1.0.0"

+comma-separated-tokens@^1.0.0:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/comma-separated-tokens/-/comma-separated-tokens-1.0.5.tgz#b13793131d9ea2d2431cf5b507ddec258f0ce0db"
+  dependencies:
+    trim "0.0.1"
+
 commander@^2.11.0, commander@^2.17.1, commander@^2.2.0, commander@^2.9.0:
  version "2.19.0"
  resolved "https://registry.yarnpkg.com/commander/-/commander-2.19.0.tgz#f6198aa84e5b83c46054b94ddedbfed5ee9ff12a"
@@ -2376,6 +2416,10 @@ delayed-stream@~1.0.0:
  version "1.0.0"
  resolved "https://registry.yarnpkg.com/delayed-stream/-/delayed-stream-1.0.0.tgz#df3ae199acadfb7d440aaae0b29e2272b24ec619"

+delegate@^3.1.2:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/delegate/-/delegate-3.2.0.tgz#b66b71c3158522e8ab5744f720d8ca0c2af59166"
+
 delegates@^1.0.0:
  version "1.0.0"
  resolved "https://registry.yarnpkg.com/delegates/-/delegates-1.0.0.tgz#84c6e159b81904fdca59a0ef44cd870d31250f9a"
@@ -2494,6 +2538,10 @@ domelementtype@1, domelementtype@^1.3.0:
  version "1.3.0"
  resolved "https://registry.yarnpkg.com/domelementtype/-/domelementtype-1.3.0.tgz#b17aed82e8ab59e52dd9c19b1756e0fc187204c2"

+domelementtype@^1.3.1:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/domelementtype/-/domelementtype-1.3.1.tgz#d048c44b37b0d10a7f2a3d5fee3f4333d790481f"
+
 domelementtype@~1.1.1:
  version "1.1.3"
  resolved "https://registry.yarnpkg.com/domelementtype/-/domelementtype-1.1.3.tgz#bd28773e2642881aec51544924299c5cd822185b"
@@ -2504,7 +2552,7 @@ domexception@^1.0.1:
  dependencies:
    webidl-conversions "^4.0.2"

-domhandler@^2.3.0:
+domhandler@^2.3.0, domhandler@^2.4.2:
  version "2.4.2"
  resolved "https://registry.yarnpkg.com/domhandler/-/domhandler-2.4.2.tgz#8805097e933d65e85546f726d60f5eb88b44f803"
  dependencies:
@@ -3113,6 +3161,12 @@ fast-xml-parser@^3.12.0:
  dependencies:
    nimnjs "^1.3.2"

+fault@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/fault/-/fault-1.0.2.tgz#c3d0fec202f172a3a4d414042ad2bb5e2a3ffbaa"
+  dependencies:
+    format "^0.2.2"
+
 fb-watchman@^2.0.0:
  version "2.0.0"
  resolved "https://registry.yarnpkg.com/fb-watchman/-/fb-watchman-2.0.0.tgz#54e9abf7dfa2f26cd9b1636c588c1afc05de5d58"
@@ -3322,6 +3376,10 @@ form-data@~2.3.2:
    combined-stream "^1.0.6"
    mime-types "^2.1.12"

+format@^0.2.2:
+  version "0.2.2"
+  resolved "https://registry.yarnpkg.com/format/-/format-0.2.2.tgz#d6170107e9efdc4ed30c9dc39016df942b5cb58b"
+
 fragment-cache@^0.2.1:
  version "0.2.1"
  resolved "https://registry.yarnpkg.com/fragment-cache/-/fragment-cache-0.2.1.tgz#4290fad27f13e89be7f33799c6bc5a0abfff0d19"
@@ -3593,6 +3651,12 @@ glogg@^1.0.0:
  dependencies:
    sparkles "^1.0.0"

+good-listener@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/good-listener/-/good-listener-1.2.2.tgz#d53b30cdf9313dffb7dc9a0d477096aa6d145c50"
+  dependencies:
+    delegate "^3.1.2"
+
 got@^7.1.0:
  version "7.1.0"
  resolved "https://registry.yarnpkg.com/got/-/got-7.1.0.tgz#05450fd84094e6bbea56f451a43a9c289166385a"
@@ -3831,6 +3895,19 @@ hash.js@^1.0.0, hash.js@^1.0.3:
    inherits "^2.0.3"
    minimalistic-assert "^1.0.1"

+hast-util-parse-selector@^2.2.0:
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/hast-util-parse-selector/-/hast-util-parse-selector-2.2.1.tgz#4ddbae1ae12c124e3eb91b581d2556441766f0ab"
+
+hastscript@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/hastscript/-/hastscript-5.0.0.tgz#fee10382c1bc4ba3f1be311521d368c047d2c43a"
+  dependencies:
+    comma-separated-tokens "^1.0.0"
+    hast-util-parse-selector "^2.2.0"
+    property-information "^5.0.1"
+    space-separated-tokens "^1.0.0"
+
 hawk@~3.1.3:
  version "3.1.3"
  resolved "https://registry.yarnpkg.com/hawk/-/hawk-3.1.3.tgz#078444bd7c1640b0fe540d2c9b73d59678e8e1c4"
@@ -3840,6 +3917,10 @@ hawk@~3.1.3:
    hoek "2.x.x"
    sntp "1.x.x"

+highlight.js@~9.13.0:
+  version "9.13.1"
+  resolved "https://registry.yarnpkg.com/highlight.js/-/highlight.js-9.13.1.tgz#054586d53a6863311168488a0f58d6c505ce641e"
+
 history@^4.7.2:
  version "4.7.2"
  resolved "https://registry.yarnpkg.com/history/-/history-4.7.2.tgz#22b5c7f31633c5b8021c7f4a8a954ac139ee8d5b"
@@ -3895,10 +3976,31 @@ html-parse-stringify2@2.0.1:
  dependencies:
    void-elements "^2.0.1"

+html-to-react@^1.3.4:
+  version "1.3.4"
+  resolved "https://registry.yarnpkg.com/html-to-react/-/html-to-react-1.3.4.tgz#647b3a54fdec73a6461864b129fb0d1eec7d4589"
+  dependencies:
+    domhandler "^2.4.2"
+    escape-string-regexp "^1.0.5"
+    htmlparser2 "^3.10.0"
+    lodash.camelcase "^4.3.0"
+    ramda "^0.26"
+
 htmlescape@^1.1.0:
  version "1.1.1"
  resolved "https://registry.yarnpkg.com/htmlescape/-/htmlescape-1.1.1.tgz#3a03edc2214bca3b66424a3e7959349509cb0351"

+htmlparser2@^3.10.0:
+  version "3.10.1"
+  resolved "https://registry.yarnpkg.com/htmlparser2/-/htmlparser2-3.10.1.tgz#bd679dc3f59897b6a34bb10749c855bb53a9392f"
+  dependencies:
+    domelementtype "^1.3.1"
+    domhandler "^2.3.0"
+    domutils "^1.5.1"
+    entities "^1.1.1"
+    inherits "^2.0.1"
+    readable-stream "^3.1.1"
+
 htmlparser2@^3.9.1:
  version "3.9.2"
  resolved "https://registry.yarnpkg.com/htmlparser2/-/htmlparser2-3.9.2.tgz#1bdf87acca0f3f9e53fa4fcceb0f4b4cbb00b338"
@@ -4111,6 +4213,17 @@ is-accessor-descriptor@^1.0.0:
  dependencies:
    kind-of "^6.0.0"

+is-alphabetical@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/is-alphabetical/-/is-alphabetical-1.0.2.tgz#1fa6e49213cb7885b75d15862fb3f3d96c884f41"
+
+is-alphanumerical@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/is-alphanumerical/-/is-alphanumerical-1.0.2.tgz#1138e9ae5040158dc6ff76b820acd6b7a181fd40"
+  dependencies:
+    is-alphabetical "^1.0.0"
+    is-decimal "^1.0.0"
+
 is-arrayish@^0.2.1:
  version "0.2.1"
  resolved "https://registry.yarnpkg.com/is-arrayish/-/is-arrayish-0.2.1.tgz#77c99840527aa8ecb1a8ba697b80645a7a926a9d"
@@ -4125,7 +4238,7 @@ is-boolean-object@^1.0.0:
  version "1.0.0"
  resolved "https://registry.yarnpkg.com/is-boolean-object/-/is-boolean-object-1.0.0.tgz#98f8b28030684219a95f375cfbd88ce3405dff93"

-is-buffer@^1.1.0, is-buffer@^1.1.5, is-buffer@~1.1.1:
+is-buffer@^1.1.0, is-buffer@^1.1.4, is-buffer@^1.1.5, is-buffer@~1.1.1:
  version "1.1.6"
  resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.6.tgz#efaa2ea9daa0d7ab2ea13a97b2b8ad51fefbe8be"

@@ -4161,6 +4274,10 @@ is-date-object@^1.0.1:
  version "1.0.1"
  resolved "https://registry.yarnpkg.com/is-date-object/-/is-date-object-1.0.1.tgz#9aa20eb6aeebbff77fbd33e74ca01b33581d3a16"

+is-decimal@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/is-decimal/-/is-decimal-1.0.2.tgz#894662d6a8709d307f3a276ca4339c8fa5dff0ff"
+
 is-descriptor@^0.1.0:
  version "0.1.6"
  resolved "https://registry.yarnpkg.com/is-descriptor/-/is-descriptor-0.1.6.tgz#366d8240dde487ca51823b1ab9f07a10a78251ca"
@@ -4251,6 +4368,10 @@ is-glob@^4.0.0:
  dependencies:
    is-extglob "^2.1.1"

+is-hexadecimal@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/is-hexadecimal/-/is-hexadecimal-1.0.2.tgz#b6e710d7d07bb66b98cb8cece5c9b4921deeb835"
+
 is-in-browser@^1.0.2, is-in-browser@^1.1.3:
  version "1.1.3"
  resolved "https://registry.yarnpkg.com/is-in-browser/-/is-in-browser-1.1.3.tgz#56ff4db683a078c6082eb95dad7dc62e1d04f835"
@@ -4397,6 +4518,10 @@ is-utf8@^0.2.0:
  version "0.2.1"
  resolved "https://registry.yarnpkg.com/is-utf8/-/is-utf8-0.2.1.tgz#4b0da1442104d1b336340e80797e865cf39f7d72"

+is-whitespace-character@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/is-whitespace-character/-/is-whitespace-character-1.0.2.tgz#ede53b4c6f6fb3874533751ec9280d01928d03ed"
+
 is-windows@^0.2.0:
  version "0.2.0"
  resolved "https://registry.yarnpkg.com/is-windows/-/is-windows-0.2.0.tgz#de1aa6d63ea29dd248737b69f1ff8b8002d2108c"
@@ -4405,6 +4530,10 @@ is-windows@^1.0.1, is-windows@^1.0.2:
  version "1.0.2"
  resolved "https://registry.yarnpkg.com/is-windows/-/is-windows-1.0.2.tgz#d1850eb9791ecd18e6182ce12a30f396634bb19d"

+is-word-character@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/is-word-character/-/is-word-character-1.0.2.tgz#46a5dac3f2a1840898b91e576cd40d493f3ae553"
+
 is-wsl@^1.1.0:
  version "1.1.0"
  resolved "https://registry.yarnpkg.com/is-wsl/-/is-wsl-1.1.0.tgz#1f16e4aa22b04d1336b66188a66af3c600c3a66d"
@@ -5187,6 +5316,10 @@ lodash.assign@^4.0.3, lodash.assign@^4.0.6:
  version "4.2.0"
  resolved "https://registry.yarnpkg.com/lodash.assign/-/lodash.assign-4.2.0.tgz#0d99f3ccd7a6d261d19bdaeb9245005d285808e7"

+lodash.camelcase@^4.3.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/lodash.camelcase/-/lodash.camelcase-4.3.0.tgz#b28aa6288a2b9fc651035c7711f65ab6190331a6"
+
 lodash.debounce@^4.0.8:
  version "4.0.8"
  resolved "https://registry.yarnpkg.com/lodash.debounce/-/lodash.debounce-4.0.8.tgz#82d79bff30a67c4005ffd5e2515300ad9ca4d7af"
@@ -5292,6 +5425,13 @@ lowercase-keys@^1.0.0:
  version "1.0.1"
  resolved "https://registry.yarnpkg.com/lowercase-keys/-/lowercase-keys-1.0.1.tgz#6f9e30b47084d971a7c820ff15a6c5167b74c26f"

+lowlight@~1.11.0:
+  version "1.11.0"
+  resolved "https://registry.yarnpkg.com/lowlight/-/lowlight-1.11.0.tgz#1304d83005126d4e8b1dc0f07981e9b689ec2efc"
+  dependencies:
+    fault "^1.0.2"
+    highlight.js "~9.13.0"
+
 lru-cache@2:
  version "2.7.3"
  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-2.7.3.tgz#6d4524e8b955f95d4f5b58851ce21dd72fb4e952"
@@ -5345,6 +5485,10 @@ map-visit@^1.0.0:
  dependencies:
    object-visit "^1.0.0"

+markdown-escapes@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/markdown-escapes/-/markdown-escapes-1.0.2.tgz#e639cbde7b99c841c0bacc8a07982873b46d2122"
+
 math-random@^1.0.1:
  version "1.0.1"
  resolved "https://registry.yarnpkg.com/math-random/-/math-random-1.0.1.tgz#8b3aac588b8a66e4975e3cdea67f7bb329601fac"
@@ -5365,6 +5509,12 @@ md5@^2.1.0:
    crypt "~0.0.1"
    is-buffer "~1.1.1"

+mdast-add-list-metadata@1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/mdast-add-list-metadata/-/mdast-add-list-metadata-1.0.1.tgz#95e73640ce2fc1fa2dcb7ec443d09e2bfe7db4cf"
+  dependencies:
+    unist-util-visit-parents "1.1.2"
+
 mem@^1.1.0:
  version "1.1.0"
  resolved "https://registry.yarnpkg.com/mem/-/mem-1.1.0.tgz#5edd52b485ca1d900fe64895505399a0dfa45f76"
@@ -6049,6 +6199,17 @@ parse-asn1@^5.0.0:
    evp_bytestokey "^1.0.0"
    pbkdf2 "^3.0.3"

+parse-entities@^1.1.0, parse-entities@^1.1.2:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/parse-entities/-/parse-entities-1.2.1.tgz#2c761ced065ba7dc68148580b5a225e4918cdd69"
+  dependencies:
+    character-entities "^1.0.0"
+    character-entities-legacy "^1.0.0"
+    character-reference-invalid "^1.0.0"
+    is-alphanumerical "^1.0.0"
+    is-decimal "^1.0.0"
+    is-hexadecimal "^1.0.0"
+
 parse-filepath@^1.0.1:
  version "1.0.2"
  resolved "https://registry.yarnpkg.com/parse-filepath/-/parse-filepath-1.0.2.tgz#a632127f53aaf3d15876f5872f3ffac763d6c891"
@@ -6280,6 +6441,12 @@ pretty-hrtime@^1.0.0:
  version "1.0.3"
  resolved "http://registry.npmjs.org/pretty-hrtime/-/pretty-hrtime-1.0.3.tgz#b7e3ea42435a4c9b2759d99e0f201eb195802ee1"

+prismjs@^1.8.4, prismjs@~1.15.0:
+  version "1.15.0"
+  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.15.0.tgz#8801d332e472091ba8def94976c8877ad60398d9"
+  optionalDependencies:
+    clipboard "^2.0.0"
+
 private@^0.1.6, private@^0.1.8:
  version "0.1.8"
  resolved "https://registry.yarnpkg.com/private/-/private-0.1.8.tgz#2381edb3689f7a53d653190060fcf822d2f368ff"
@@ -6314,6 +6481,12 @@ prop-types@^15.5.8, prop-types@^15.6.0, prop-types@^15.6.1, prop-types@^15.6.2:
    loose-envify "^1.3.1"
    object-assign "^4.1.1"

+property-information@^5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/property-information/-/property-information-5.0.1.tgz#c3b09f4f5750b1634c0b24205adbf78f18bdf94f"
+  dependencies:
+    xtend "^4.0.1"
+
 pseudomap@^1.0.2:
  version "1.0.2"
  resolved "https://registry.yarnpkg.com/pseudomap/-/pseudomap-1.0.2.tgz#f052a28da70e618917ef0a8ac34c1ae5a68286b3"
@@ -6375,6 +6548,10 @@ railroad-diagrams@^1.0.0:
  version "1.0.0"
  resolved "https://registry.yarnpkg.com/railroad-diagrams/-/railroad-diagrams-1.0.0.tgz#eb7e6267548ddedfb899c1b90e57374559cddb7e"

+ramda@^0.26:
+  version "0.26.1"
+  resolved "https://registry.yarnpkg.com/ramda/-/ramda-0.26.1.tgz#8d41351eb8111c55353617fc3bbffad8e4d35d06"
+
 randexp@0.4.6:
  version "0.4.6"
  resolved "https://registry.yarnpkg.com/randexp/-/randexp-0.4.6.tgz#e986ad5e5e31dae13ddd6f7b3019aa7c87f60ca3"
@@ -6487,6 +6664,18 @@ react-lifecycles-compat@^3.0.4:
  version "3.0.4"
  resolved "https://registry.yarnpkg.com/react-lifecycles-compat/-/react-lifecycles-compat-3.0.4.tgz#4f1a273afdfc8f3488a8c516bfda78f872352362"

+react-markdown@^4.0.6:
+  version "4.0.6"
+  resolved "https://registry.yarnpkg.com/react-markdown/-/react-markdown-4.0.6.tgz#927d44421735cd90b7634bb221e9d7d8656e01e9"
+  dependencies:
+    html-to-react "^1.3.4"
+    mdast-add-list-metadata "1.0.1"
+    prop-types "^15.6.1"
+    remark-parse "^5.0.0"
+    unified "^6.1.5"
+    unist-util-visit "^1.3.0"
+    xtend "^4.0.1"
+
 react-router-dom@^4.3.1:
  version "4.3.1"
  resolved "https://registry.yarnpkg.com/react-router-dom/-/react-router-dom-4.3.1.tgz#4c2619fc24c4fa87c9fd18f4fb4a43fe63fbd5c6"
@@ -6529,6 +6718,16 @@ react-select@^2.1.2:
    react-input-autosize "^2.2.1"
    react-transition-group "^2.2.1"

+react-syntax-highlighter@^10.2.0:
+  version "10.2.0"
+  resolved "https://registry.yarnpkg.com/react-syntax-highlighter/-/react-syntax-highlighter-10.2.0.tgz#c44c2a1e89326bbd808cf7a8b2f08dc5ed025d91"
+  dependencies:
+    "@babel/runtime" "^7.3.1"
+    highlight.js "~9.13.0"
+    lowlight "~1.11.0"
+    prismjs "^1.8.4"
+    refractor "^2.4.1"
+
 react-test-renderer@^16.0.0-0:
  version "16.5.2"
  resolved "https://registry.yarnpkg.com/react-test-renderer/-/react-test-renderer-16.5.2.tgz#92e9d2c6f763b9821b2e0b22f994ee675068b5ae"
@@ -6622,6 +6821,14 @@ readable-stream@^2.0.1, readable-stream@^2.0.2, readable-stream@^2.0.6, readable
    string_decoder "~1.1.1"
    util-deprecate "~1.0.1"

+readable-stream@^3.1.1:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-3.2.0.tgz#de17f229864c120a9f56945756e4f32c4045245d"
+  dependencies:
+    inherits "^2.0.3"
+    string_decoder "^1.1.1"
+    util-deprecate "^1.0.1"
+
 readable-stream@~1.1.9:
  version "1.1.14"
  resolved "http://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz#7cf4c54ef648e3813084c636dd2079e166c081d9"
@@ -6663,6 +6870,14 @@ rechoir@^0.6.2:
  dependencies:
    resolve "^1.1.6"

+refractor@^2.4.1:
+  version "2.7.0"
+  resolved "https://registry.yarnpkg.com/refractor/-/refractor-2.7.0.tgz#3ed9a96a619e75326a429e644241dea51be070a3"
+  dependencies:
+    hastscript "^5.0.0"
+    parse-entities "^1.1.2"
+    prismjs "~1.15.0"
+
 regenerate-unicode-properties@^7.0.0:
  version "7.0.0"
  resolved "https://registry.yarnpkg.com/regenerate-unicode-properties/-/regenerate-unicode-properties-7.0.0.tgz#107405afcc4a190ec5ed450ecaa00ed0cafa7a4c"
@@ -6729,6 +6944,26 @@ regjsparser@^0.3.0:
  dependencies:
    jsesc "~0.5.0"

+remark-parse@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/remark-parse/-/remark-parse-5.0.0.tgz#4c077f9e499044d1d5c13f80d7a98cf7b9285d95"
+  dependencies:
+    collapse-white-space "^1.0.2"
+    is-alphabetical "^1.0.0"
+    is-decimal "^1.0.0"
+    is-whitespace-character "^1.0.0"
+    is-word-character "^1.0.0"
+    markdown-escapes "^1.0.0"
+    parse-entities "^1.1.0"
+    repeat-string "^1.5.4"
+    state-toggle "^1.0.0"
+    trim "0.0.1"
+    trim-trailing-lines "^1.0.0"
+    unherit "^1.0.4"
+    unist-util-remove-position "^1.0.0"
+    vfile-location "^2.0.0"
+    xtend "^4.0.1"
+
 remove-trailing-separator@^1.0.1:
  version "1.1.0"
  resolved "https://registry.yarnpkg.com/remove-trailing-separator/-/remove-trailing-separator-1.1.0.tgz#c24bce2a283adad5bc3f58e0d48249b92379d8ef"
@@ -6737,7 +6972,7 @@ repeat-element@^1.1.2:
  version "1.1.3"
  resolved "https://registry.yarnpkg.com/repeat-element/-/repeat-element-1.1.3.tgz#782e0d825c0c5a3bb39731f84efee6b742e6b1ce"

-repeat-string@^1.5.2, repeat-string@^1.6.1:
+repeat-string@^1.5.2, repeat-string@^1.5.4, repeat-string@^1.6.1:
  version "1.6.1"
  resolved "https://registry.yarnpkg.com/repeat-string/-/repeat-string-1.6.1.tgz#8dcae470e1c88abc2d600fff4a776286da75e637"

@@ -6751,7 +6986,7 @@ replace-ext@0.0.1:
  version "0.0.1"
  resolved "https://registry.yarnpkg.com/replace-ext/-/replace-ext-0.0.1.tgz#29bbd92078a739f0bcce2b4ee41e837953522924"

-replace-ext@^1.0.0:
+replace-ext@1.0.0, replace-ext@^1.0.0:
  version "1.0.0"
  resolved "https://registry.yarnpkg.com/replace-ext/-/replace-ext-1.0.0.tgz#de63128373fcbf7c3ccfa4de5a480c45a67958eb"

@@ -6994,6 +7229,10 @@ scheduler@^0.10.0:
    loose-envify "^1.1.0"
    object-assign "^4.1.1"

+select@^1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/select/-/select-1.1.2.tgz#0e7350acdec80b1108528786ec1d4418d11b396d"
+
 "semver@2 || 3 || 4 || 5", semver@^5.0.1, semver@^5.3.0, semver@^5.4.1, semver@^5.5.0, semver@^5.5.1:
  version "5.6.0"
  resolved "https://registry.yarnpkg.com/semver/-/semver-5.6.0.tgz#7e74256fbaa49c75aa7c7a205cc22799cac80004"
@@ -7256,6 +7495,12 @@ source-map@^0.7.2:
  version "0.7.3"
  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.7.3.tgz#5302f8169031735226544092e64981f751750383"

+space-separated-tokens@^1.0.0:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/space-separated-tokens/-/space-separated-tokens-1.1.2.tgz#e95ab9d19ae841e200808cd96bc7bd0adbbb3412"
+  dependencies:
+    trim "0.0.1"
+
 sparkles@^1.0.0:
  version "1.0.1"
  resolved "https://registry.yarnpkg.com/sparkles/-/sparkles-1.0.1.tgz#008db65edce6c50eec0c5e228e1945061dd0437c"
@@ -7310,6 +7555,10 @@ stack-utils@^1.0.1:
  version "1.0.1"
  resolved "https://registry.yarnpkg.com/stack-utils/-/stack-utils-1.0.1.tgz#d4f33ab54e8e38778b0ca5cfd3b3afb12db68620"

+state-toggle@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/state-toggle/-/state-toggle-1.0.1.tgz#c3cb0974f40a6a0f8e905b96789eb41afa1cde3a"
+
 static-extend@^0.1.1:
  version "0.1.2"
  resolved "https://registry.yarnpkg.com/static-extend/-/static-extend-0.1.2.tgz#60809c39cbff55337226fd5e0b520f341f1fb5c6"
@@ -7625,6 +7874,10 @@ timers-ext@^0.1.5:
    es5-ext "~0.10.46"
    next-tick "1"

+tiny-emitter@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/tiny-emitter/-/tiny-emitter-2.1.0.tgz#1d1a56edfc51c43e863cbb5382a72330e3555423"
+
 tmp@^0.0.33:
  version "0.0.33"
  resolved "https://registry.yarnpkg.com/tmp/-/tmp-0.0.33.tgz#6d34335889768d21b2bcda0aa277ced3b1bfadf9"
@@ -7710,6 +7963,18 @@ trim-right@^1.0.1:
  version "1.0.1"
  resolved "https://registry.yarnpkg.com/trim-right/-/trim-right-1.0.1.tgz#cb2e1203067e0c8de1f614094b9fe45704ea6003"

+trim-trailing-lines@^1.0.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/trim-trailing-lines/-/trim-trailing-lines-1.1.1.tgz#e0ec0810fd3c3f1730516b45f49083caaf2774d9"
+
+trim@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/trim/-/trim-0.0.1.tgz#5858547f6b290757ee95cccc666fb50084c460dd"
+
+trough@^1.0.0:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/trough/-/trough-1.0.3.tgz#e29bd1614c6458d44869fc28b255ab7857ef7c24"
+
 tslib@^1.9.0:
  version "1.9.3"
  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.9.3.tgz#d7e4dd79245d85428c4d7e4822a79917954ca286"
@@ -7778,6 +8043,13 @@ underscore@~1.4.4:
  version "1.4.4"
  resolved "https://registry.yarnpkg.com/underscore/-/underscore-1.4.4.tgz#61a6a32010622afa07963bf325203cf12239d604"

+unherit@^1.0.4:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/unherit/-/unherit-1.1.1.tgz#132748da3e88eab767e08fabfbb89c5e9d28628c"
+  dependencies:
+    inherits "^2.0.1"
+    xtend "^4.0.1"
+
 unicode-canonical-property-names-ecmascript@^1.0.4:
  version "1.0.4"
  resolved "https://registry.yarnpkg.com/unicode-canonical-property-names-ecmascript/-/unicode-canonical-property-names-ecmascript-1.0.4.tgz#2619800c4c825800efdd8343af7dd9933cbe2818"
@@ -7797,6 +8069,17 @@ unicode-property-aliases-ecmascript@^1.0.4:
  version "1.0.4"
  resolved "https://registry.yarnpkg.com/unicode-property-aliases-ecmascript/-/unicode-property-aliases-ecmascript-1.0.4.tgz#5a533f31b4317ea76f17d807fa0d116546111dd0"

+unified@^6.1.5:
+  version "6.2.0"
+  resolved "https://registry.yarnpkg.com/unified/-/unified-6.2.0.tgz#7fbd630f719126d67d40c644b7e3f617035f6dba"
+  dependencies:
+    bail "^1.0.0"
+    extend "^3.0.0"
+    is-plain-obj "^1.1.0"
+    trough "^1.0.0"
+    vfile "^2.0.0"
+    x-is-string "^0.1.0"
+
 union-value@^1.0.0:
  version "1.0.0"
  resolved "https://registry.yarnpkg.com/union-value/-/union-value-1.0.0.tgz#5c71c34cb5bad5dcebe3ea0cd08207ba5aa1aea4"
@@ -7810,6 +8093,36 @@ unique-stream@^1.0.0:
  version "1.0.0"
  resolved "https://registry.yarnpkg.com/unique-stream/-/unique-stream-1.0.0.tgz#d59a4a75427447d9aa6c91e70263f8d26a4b104b"

+unist-util-is@^2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/unist-util-is/-/unist-util-is-2.1.2.tgz#1193fa8f2bfbbb82150633f3a8d2eb9a1c1d55db"
+
+unist-util-remove-position@^1.0.0:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/unist-util-remove-position/-/unist-util-remove-position-1.1.2.tgz#86b5dad104d0bbfbeb1db5f5c92f3570575c12cb"
+  dependencies:
+    unist-util-visit "^1.1.0"
+
+unist-util-stringify-position@^1.0.0, unist-util-stringify-position@^1.1.1:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/unist-util-stringify-position/-/unist-util-stringify-position-1.1.2.tgz#3f37fcf351279dcbca7480ab5889bb8a832ee1c6"
+
+unist-util-visit-parents@1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/unist-util-visit-parents/-/unist-util-visit-parents-1.1.2.tgz#f6e3afee8bdbf961c0e6f028ea3c0480028c3d06"
+
+unist-util-visit-parents@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/unist-util-visit-parents/-/unist-util-visit-parents-2.0.1.tgz#63fffc8929027bee04bfef7d2cce474f71cb6217"
+  dependencies:
+    unist-util-is "^2.1.2"
+
+unist-util-visit@^1.1.0, unist-util-visit@^1.3.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/unist-util-visit/-/unist-util-visit-1.4.0.tgz#1cb763647186dc26f5e1df5db6bd1e48b3cc2fb1"
+  dependencies:
+    unist-util-visit-parents "^2.0.0"
+
 universal-user-agent@^2.0.0:
  version "2.0.1"
  resolved "https://registry.yarnpkg.com/universal-user-agent/-/universal-user-agent-2.0.1.tgz#18e591ca52b1cb804f6b9cbc4c336cf8191f80e1"
@@ -7888,7 +8201,7 @@ user-home@^1.1.1:
  version "1.1.1"
  resolved "https://registry.yarnpkg.com/user-home/-/user-home-1.1.1.tgz#2b5be23a32b63a7c9deb8d0f28d485724a3df190"

-util-deprecate@~1.0.1:
+util-deprecate@^1.0.1, util-deprecate@~1.0.1:
  version "1.0.2"
  resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"

@@ -7944,6 +8257,25 @@ verror@1.10.0:
    core-util-is "1.0.2"
    extsprintf "^1.2.0"

+vfile-location@^2.0.0:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/vfile-location/-/vfile-location-2.0.4.tgz#2a5e7297dd0d9e2da4381464d04acc6b834d3e55"
+
+vfile-message@^1.0.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/vfile-message/-/vfile-message-1.1.1.tgz#5833ae078a1dfa2d96e9647886cd32993ab313e1"
+  dependencies:
+    unist-util-stringify-position "^1.1.1"
+
+vfile@^2.0.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/vfile/-/vfile-2.3.0.tgz#e62d8e72b20e83c324bc6c67278ee272488bf84a"
+  dependencies:
+    is-buffer "^1.1.4"
+    replace-ext "1.0.0"
+    unist-util-stringify-position "^1.0.0"
+    vfile-message "^1.0.0"
+
 vinyl-buffer@^1.0.1:
  version "1.0.1"
  resolved "https://registry.yarnpkg.com/vinyl-buffer/-/vinyl-buffer-1.0.1.tgz#96c1a3479b8c5392542c612029013b5b27f88bbf"
@@ -8161,6 +8493,10 @@ ws@~3.3.1:
    safe-buffer "~5.1.0"
    ultron "~1.1.0"

+x-is-string@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/x-is-string/-/x-is-string-0.1.0.tgz#474b50865af3a49a9c4657f05acd145458f77d82"
+
 xml-name-validator@^3.0.0:
  version "3.0.0"
  resolved "https://registry.yarnpkg.com/xml-name-validator/-/xml-name-validator-3.0.0.tgz#6ae73e06de4d8c6e47f9fb181f78d648ad457c6a"
--- a/scm-ui-components/packages/ui-types/src/Config.js
+++ b/scm-ui-components/packages/ui-types/src/Config.js
@@ -22,6 +22,6 @@ export type Config = {
  pluginUrl: string,
  loginAttemptLimitTimeout: number,
  enabledXsrfProtection: boolean,
-  defaultNamespaceStrategy: string,
+  namespaceStrategy: string,
  _links: Links
 };
--- a/scm-ui-components/packages/ui-types/src/NamespaceStrategies.js
+++ b/scm-ui-components/packages/ui-types/src/NamespaceStrategies.js
@@ -0,0 +1,9 @@
+// @flow
+
+import type { Links } from "./hal";
+
+export type NamespaceStrategies = {
+  current: string,
+  available: string[],
+  _links: Links
+};
--- a/scm-ui-components/packages/ui-types/src/index.js
+++ b/scm-ui-components/packages/ui-types/src/index.js
@@ -26,3 +26,5 @@ export type { SubRepository, File } from "./Sources";
 export type { SelectValue, AutocompleteObject } from "./Autocomplete";

 export type { AvailableRepositoryPermissions, RepositoryRole } from "./AvailableRepositoryPermissions";
+
+export type { NamespaceStrategies } from "./NamespaceStrategies";
--- a/scm-ui-components/yarn.lock
+++ b/scm-ui-components/yarn.lock
--- a/scm-ui/public/locales/de/config.json
+++ b/scm-ui/public/locales/de/config.json
@@ -57,7 +57,7 @@
    "skip-failed-authenticators": "Fehlgeschlagene Authentifizierer überspringen",
    "plugin-url": "Plugin URL",
    "enabled-xsrf-protection": "XSRF Protection aktivieren",
-    "default-namespace-strategy": "Default Namespace Strategie"
+    "namespace-strategy": "Namespace Strategie"
  },
  "validation": {
    "date-format-invalid": "Das Datumsformat ist ungültig",
@@ -87,6 +87,6 @@
    "proxyUserHelpText": "Der Benutzername für die Proxy Server Anmeldung.",
    "proxyExcludesHelpText": "Glob patterns für Hostnamen, die von den Proxy-Einstellungen ausgeschlossen werden sollen.",
    "enableXsrfProtectionHelpText": "Xsrf Cookie Protection aktivieren. Hinweis: Dieses Feature befindet sich noch im Experimentalstatus.",
-    "defaultNameSpaceStrategyHelpText": "Die Standardstrategie für Namespaces."
+    "nameSpaceStrategyHelpText": "Strategie für Namespaces."
  }
 }
--- a/scm-ui/public/locales/de/repos.json
+++ b/scm-ui/public/locales/de/repos.json
@@ -1,5 +1,6 @@
 {
  "repository": {
+    "namespace": "Namespace",
    "name": "Name",
    "type": "Typ",
    "contact": "Kontakt",
@@ -8,10 +9,12 @@
    "lastModified": "Zuletzt bearbeitet"
  },
  "validation": {
+    "namespace-invalid": "Der Namespace des Repository ist ungültig",
    "name-invalid": "Der Name des Repository ist ungültig",
    "contact-invalid": "Der Kontakt muss eine gültige E-Mail Adresse sein"
  },
  "help": {
+    "namespaceHelpText": "Der Namespace des Repository. Dieser wird Teil der URL des Repository sein.",
    "nameHelpText": "Der Name des Repository. Dieser wird Teil der URL des Repository sein.",
    "typeHelpText": "Der Typ des Repository (Mercurial, Git oder Subversion).",
    "contactHelpText": "E-Mail Adresse der Person, die für das Repository verantwortlich ist.",
--- a/scm-ui/public/locales/en/config.json
+++ b/scm-ui/public/locales/en/config.json
@@ -57,7 +57,7 @@
    "skip-failed-authenticators": "Skip Failed Authenticators",
    "plugin-url": "Plugin URL",
    "enabled-xsrf-protection": "Enabled XSRF Protection",
-    "default-namespace-strategy": "Default Namespace Strategy"
+    "namespace-strategy": "Namespace Strategy"
  },
  "validation": {
    "date-format-invalid": "The date format is not valid",
@@ -87,6 +87,6 @@
    "proxyUserHelpText": "The username for the proxy server authentication.",
    "proxyExcludesHelpText": "Glob patterns for hostnames, which should be excluded from proxy settings.",
    "enableXsrfProtectionHelpText": "Enable XSRF Cookie Protection. Note: This feature is still experimental.",
-    "defaultNameSpaceStrategyHelpText": "The default namespace strategy."
+    "nameSpaceStrategyHelpText": "The namespace strategy."
  }
 }
--- a/scm-ui/public/locales/en/repos.json
+++ b/scm-ui/public/locales/en/repos.json
@@ -1,5 +1,6 @@
 {
  "repository": {
+    "namespace": "Namespace",
    "name": "Name",
    "type": "Type",
    "contact": "Contact",
@@ -8,10 +9,12 @@
    "lastModified": "Last Modified"
  },
  "validation": {
+    "namespace-invalid": "The repository namespace is invalid",
    "name-invalid": "The repository name is invalid",
    "contact-invalid": "Contact must be a valid mail address"
  },
  "help": {
+    "namespaceHelpText": "The namespace of the repository. This name will be part of the repository url.",
    "nameHelpText": "The name of the repository. This name will be part of the repository url.",
    "typeHelpText": "The type of the repository (e.g. Mercurial, Git or Subversion).",
    "contactHelpText": "Email address of the person who is responsible for this repository.",
--- a/scm-ui/src/config/components/form/ConfigForm.js
+++ b/scm-ui/src/config/components/form/ConfigForm.js
@@ -2,7 +2,7 @@
 import React from "react";
 import { translate } from "react-i18next";
 import { SubmitButton, Notification } from "@scm-manager/ui-components";
-import type { Config } from "@scm-manager/ui-types";
+import type { NamespaceStrategies, Config } from "@scm-manager/ui-types";
 import ProxySettings from "./ProxySettings";
 import GeneralSettings from "./GeneralSettings";
 import BaseUrlSettings from "./BaseUrlSettings";
@@ -13,9 +13,11 @@ type Props = {
  submitForm: Config => void,
  config?: Config,
  loading?: boolean,
-  t: string => string,
  configReadPermission: boolean,
-  configUpdatePermission: boolean
+  configUpdatePermission: boolean,
+  namespaceStrategies?: NamespaceStrategies,
+  // context props
+  t: string => string,
 };

 type State = {
@@ -54,7 +56,7 @@ class ConfigForm extends React.Component<Props, State> {
        pluginUrl: "",
        loginAttemptLimitTimeout: 0,
        enabledXsrfProtection: true,
-        defaultNamespaceStrategy: "",
+        namespaceStrategy: "",
        _links: {}
      },
      showNotification: false,
@@ -88,6 +90,7 @@ class ConfigForm extends React.Component<Props, State> {
    const {
      loading,
      t,
+      namespaceStrategies,
      configReadPermission,
      configUpdatePermission
    } = this.props;
@@ -118,6 +121,7 @@ class ConfigForm extends React.Component<Props, State> {
      <form onSubmit={this.submit}>
        {noPermissionNotification}
        <GeneralSettings
+          namespaceStrategies={namespaceStrategies}
          realmDescription={config.realmDescription}
          enableRepositoryArchive={config.enableRepositoryArchive}
          disableGroupingGrid={config.disableGroupingGrid}
@@ -126,7 +130,7 @@ class ConfigForm extends React.Component<Props, State> {
          skipFailedAuthenticators={config.skipFailedAuthenticators}
          pluginUrl={config.pluginUrl}
          enabledXsrfProtection={config.enabledXsrfProtection}
-          defaultNamespaceStrategy={config.defaultNamespaceStrategy}
+          namespaceStrategy={config.namespaceStrategy}
          onChange={(isValid, changedValue, name) =>
            this.onChange(isValid, changedValue, name)
          }
--- a/scm-ui/src/config/components/form/GeneralSettings.js
+++ b/scm-ui/src/config/components/form/GeneralSettings.js
@@ -1,7 +1,9 @@
 // @flow
 import React from "react";
 import { translate } from "react-i18next";
-import { Checkbox, InputField } from "@scm-manager/ui-components";
+import { Checkbox, InputField} from "@scm-manager/ui-components";
+import type { NamespaceStrategies } from "@scm-manager/ui-types";
+import NamespaceStrategySelect from "./NamespaceStrategySelect";

 type Props = {
  realmDescription: string,
@@ -12,13 +14,16 @@ type Props = {
  skipFailedAuthenticators: boolean,
  pluginUrl: string,
  enabledXsrfProtection: boolean,
-  defaultNamespaceStrategy: string,
-  t: string => string,
+  namespaceStrategy: string,
+  namespaceStrategies?: NamespaceStrategies,
  onChange: (boolean, any, string) => void,
-  hasUpdatePermission: boolean
+  hasUpdatePermission: boolean,
+  // context props
+  t: string => string
 };

 class GeneralSettings extends React.Component<Props> {
+
  render() {
    const {
      t,
@@ -30,8 +35,9 @@ class GeneralSettings extends React.Component<Props> {
      skipFailedAuthenticators,
      pluginUrl,
      enabledXsrfProtection,
-      defaultNamespaceStrategy,
-      hasUpdatePermission
+      namespaceStrategy,
+      hasUpdatePermission,
+      namespaceStrategies
    } = this.props;

    return (
@@ -67,12 +73,13 @@ class GeneralSettings extends React.Component<Props> {
                />
                </div>
                <div className="column is-half">
-                <InputField
-                  label={t("general-settings.default-namespace-strategy")}
-                  onChange={this.handleDefaultNamespaceStrategyChange}
-                  value={defaultNamespaceStrategy}
+                  <NamespaceStrategySelect
+                    label={t("general-settings.namespace-strategy")}
+                    onChange={this.handleNamespaceStrategyChange}
+                    value={namespaceStrategy}
                    disabled={!hasUpdatePermission}
-                  helpText={t("help.defaultNameSpaceStrategyHelpText")}
+                    namespaceStrategies={namespaceStrategies}
+                    helpText={t("help.nameSpaceStrategyHelpText")}
                  />
                </div>
            </div>
@@ -146,19 +153,17 @@ class GeneralSettings extends React.Component<Props> {
  handleAnonymousAccessEnabledChange = (value: string) => {
    this.props.onChange(true, value, "anonymousAccessEnabled");
  };
-
  handleSkipFailedAuthenticatorsChange = (value: string) => {
    this.props.onChange(true, value, "skipFailedAuthenticators");
  };
  handlePluginUrlChange = (value: string) => {
    this.props.onChange(true, value, "pluginUrl");
  };
-
  handleEnabledXsrfProtectionChange = (value: boolean) => {
    this.props.onChange(true, value, "enabledXsrfProtection");
  };
-  handleDefaultNamespaceStrategyChange = (value: string) => {
-    this.props.onChange(true, value, "defaultNamespaceStrategy");
+  handleNamespaceStrategyChange = (value: string) => {
+    this.props.onChange(true, value, "namespaceStrategy");
  };
 }

--- a/scm-ui/src/config/components/form/NamespaceStrategySelect.js
+++ b/scm-ui/src/config/components/form/NamespaceStrategySelect.js
@@ -0,0 +1,67 @@
+//@flow
+import React from "react";
+import { translate, type TFunction } from "react-i18next";
+import { Select } from "@scm-manager/ui-components";
+import type { NamespaceStrategies } from "@scm-manager/ui-types";
+
+type Props = {
+  namespaceStrategies: NamespaceStrategies,
+  label: string,
+  value?: string,
+  disabled?: boolean,
+  helpText?: string,
+  onChange: (value: string, name?: string) => void,
+  // context props
+  t: TFunction
+};
+
+class NamespaceStrategySelect extends React.Component<Props> {
+  createNamespaceOptions = () => {
+    const { namespaceStrategies, t } = this.props;
+    let available = [];
+    if (namespaceStrategies && namespaceStrategies.available) {
+      available = namespaceStrategies.available;
+    }
+
+    return available.map(ns => {
+      const key = "namespaceStrategies." + ns;
+      let label = t(key);
+      if (label === key) {
+        label = ns;
+      }
+      return {
+        value: ns,
+        label: label
+      };
+    });
+  };
+
+  findSelected = () => {
+    const { namespaceStrategies, value } = this.props;
+    if (
+      !namespaceStrategies ||
+      !namespaceStrategies.available ||
+      namespaceStrategies.available.indexOf(value) < 0
+    ) {
+      return namespaceStrategies.current;
+    }
+    return value;
+  };
+
+  render() {
+    const { label, helpText, disabled, onChange } = this.props;
+    const nsOptions = this.createNamespaceOptions();
+    return (
+      <Select
+        label={label}
+        onChange={onChange}
+        value={this.findSelected()}
+        disabled={disabled}
+        options={nsOptions}
+        helpText={helpText}
+      />
+    );
+  }
+}
+
+export default translate("plugins")(NamespaceStrategySelect);
--- a/scm-ui/src/config/containers/GlobalConfig.js
+++ b/scm-ui/src/config/containers/GlobalConfig.js
@@ -14,9 +14,15 @@ import {
  modifyConfigReset
 } from "../modules/config";
 import { connect } from "react-redux";
-import type { Config } from "@scm-manager/ui-types";
+import type { Config, NamespaceStrategies } from "@scm-manager/ui-types";
 import ConfigForm from "../components/form/ConfigForm";
 import { getConfigLink } from "../../modules/indexResource";
+import {
+  fetchNamespaceStrategiesIfNeeded,
+  getFetchNamespaceStrategiesFailure,
+  getNamespaceStrategies,
+  isFetchNamespaceStrategiesPending
+} from "../modules/namespaceStrategies";

 type Props = {
  loading: boolean,
@@ -24,11 +30,13 @@ type Props = {
  config: Config,
  configUpdatePermission: boolean,
  configLink: string,
+  namespaceStrategies?: NamespaceStrategies,

  // dispatch functions
  modifyConfig: (config: Config, callback?: () => void) => void,
  fetchConfig: (link: string) => void,
  configReset: void => void,
+  fetchNamespaceStrategiesIfNeeded: void => void,

  // context objects
  t: string => string
@@ -51,6 +59,7 @@ class GlobalConfig extends React.Component<Props, State> {

  componentDidMount() {
    this.props.configReset();
+    this.props.fetchNamespaceStrategiesIfNeeded();
    if (this.props.configLink) {
      this.props.fetchConfig(this.props.configLink);
    } else {
@@ -103,7 +112,7 @@ class GlobalConfig extends React.Component<Props, State> {
  };

  renderContent = () => {
-    const { error, loading, config, configUpdatePermission } = this.props;
+    const { error, loading, config, configUpdatePermission, namespaceStrategies } = this.props;
    const { configReadPermission } = this.state;
    if (!error) {
      return (
@@ -113,6 +122,7 @@ class GlobalConfig extends React.Component<Props, State> {
            submitForm={config => this.modifyConfig(config)}
            config={config}
            loading={loading}
+            namespaceStrategies={namespaceStrategies}
            configUpdatePermission={configUpdatePermission}
            configReadPermission={configReadPermission}
          />
@@ -133,23 +143,33 @@ const mapDispatchToProps = dispatch => {
    },
    configReset: () => {
      dispatch(modifyConfigReset());
+    },
+    fetchNamespaceStrategiesIfNeeded: () => {
+      dispatch(fetchNamespaceStrategiesIfNeeded());
    }
  };
 };

 const mapStateToProps = state => {
-  const loading = isFetchConfigPending(state) || isModifyConfigPending(state);
-  const error = getFetchConfigFailure(state) || getModifyConfigFailure(state);
+  const loading = isFetchConfigPending(state)
+    || isModifyConfigPending(state)
+    || isFetchNamespaceStrategiesPending(state);
+  const error = getFetchConfigFailure(state)
+    || getModifyConfigFailure(state)
+    || getFetchNamespaceStrategiesFailure(state);
+
  const config = getConfig(state);
  const configUpdatePermission = getConfigUpdatePermission(state);
  const configLink = getConfigLink(state);
+  const namespaceStrategies = getNamespaceStrategies(state);

  return {
    loading,
    error,
    config,
    configUpdatePermission,
-    configLink
+    configLink,
+    namespaceStrategies
  };
 };

--- a/scm-ui/src/config/modules/config.test.js
+++ b/scm-ui/src/config/modules/config.test.js
@@ -50,7 +50,7 @@ const config = {
    "http://plugins.scm-manager.org/scm-plugin-backend/api/{version}/plugins?os={os}&arch={arch}&snapshot=false",
  loginAttemptLimitTimeout: 300,
  enabledXsrfProtection: true,
-  defaultNamespaceStrategy: "sonia.scm.repository.DefaultNamespaceStrategy",
+  namespaceStrategy: "UsernameNamespaceStrategy",
  _links: {
    self: { href: "http://localhost:8081/api/v2/config" },
    update: { href: "http://localhost:8081/api/v2/config" }
@@ -79,7 +79,7 @@ const configWithNullValues = {
    "http://plugins.scm-manager.org/scm-plugin-backend/api/{version}/plugins?os={os}&arch={arch}&snapshot=false",
  loginAttemptLimitTimeout: 300,
  enabledXsrfProtection: true,
-  defaultNamespaceStrategy: "sonia.scm.repository.DefaultNamespaceStrategy",
+  namespaceStrategy: "UsernameNamespaceStrategy",
  _links: {
    self: { href: "http://localhost:8081/api/v2/config" },
    update: { href: "http://localhost:8081/api/v2/config" }
--- a/scm-ui/src/config/modules/namespaceStrategies.js
+++ b/scm-ui/src/config/modules/namespaceStrategies.js
@@ -0,0 +1,115 @@
+// @flow
+
+import * as types from "../../modules/types";
+import type { Action, NamespaceStrategies } from "@scm-manager/ui-types";
+import { apiClient } from "@scm-manager/ui-components";
+import { isPending } from "../../modules/pending";
+import { getFailure } from "../../modules/failure";
+import { MODIFY_CONFIG_SUCCESS } from "./config";
+
+export const FETCH_NAMESPACESTRATEGIES_TYPES =
+  "scm/config/FETCH_NAMESPACESTRATEGIES_TYPES";
+export const FETCH_NAMESPACESTRATEGIES_TYPES_PENDING = `${FETCH_NAMESPACESTRATEGIES_TYPES}_${
+  types.PENDING_SUFFIX
+}`;
+export const FETCH_NAMESPACESTRATEGIES_TYPES_SUCCESS = `${FETCH_NAMESPACESTRATEGIES_TYPES}_${
+  types.SUCCESS_SUFFIX
+}`;
+export const FETCH_NAMESPACESTRATEGIES_TYPES_FAILURE = `${FETCH_NAMESPACESTRATEGIES_TYPES}_${
+  types.FAILURE_SUFFIX
+}`;
+
+export function fetchNamespaceStrategiesIfNeeded() {
+  return function(dispatch: any, getState: () => Object) {
+    const state = getState();
+    if (shouldFetchNamespaceStrategies(state)) {
+      return fetchNamespaceStrategies(
+        dispatch,
+        state.indexResources.links.namespaceStrategies.href
+      );
+    }
+  };
+}
+
+function fetchNamespaceStrategies(dispatch: any, url: string) {
+  dispatch(fetchNamespaceStrategiesPending());
+  return apiClient
+    .get(url)
+    .then(response => response.json())
+    .then(namespaceStrategies => {
+      dispatch(fetchNamespaceStrategiesSuccess(namespaceStrategies));
+    })
+    .catch(error => {
+      dispatch(fetchNamespaceStrategiesFailure(error));
+    });
+}
+
+export function shouldFetchNamespaceStrategies(state: Object) {
+  if (
+    isFetchNamespaceStrategiesPending(state) ||
+    getFetchNamespaceStrategiesFailure(state)
+  ) {
+    return false;
+  }
+  return !state.namespaceStrategies || !state.namespaceStrategies.current;
+}
+
+export function fetchNamespaceStrategiesPending(): Action {
+  return {
+    type: FETCH_NAMESPACESTRATEGIES_TYPES_PENDING
+  };
+}
+
+export function fetchNamespaceStrategiesSuccess(
+  namespaceStrategies: NamespaceStrategies
+): Action {
+  return {
+    type: FETCH_NAMESPACESTRATEGIES_TYPES_SUCCESS,
+    payload: namespaceStrategies
+  };
+}
+
+export function fetchNamespaceStrategiesFailure(error: Error): Action {
+  return {
+    type: FETCH_NAMESPACESTRATEGIES_TYPES_FAILURE,
+    payload: error
+  };
+}
+
+// reducers
+
+export default function reducer(
+  state: Object = {},
+  action: Action = { type: "UNKNOWN" }
+): Object {
+  if (
+    action.type === FETCH_NAMESPACESTRATEGIES_TYPES_SUCCESS &&
+    action.payload
+  ) {
+    return action.payload;
+  } else if (action.type === MODIFY_CONFIG_SUCCESS && action.payload) {
+    const config = action.payload;
+    return {
+      ...state,
+      current: config.namespaceStrategy
+    };
+  }
+  return state;
+}
+
+// selectors
+
+export function getNamespaceStrategies(state: Object) {
+  if (state.namespaceStrategies) {
+    return state.namespaceStrategies;
+  }
+  return {};
+}
+
+export function isFetchNamespaceStrategiesPending(state: Object) {
+  return isPending(state, FETCH_NAMESPACESTRATEGIES_TYPES);
+}
+
+export function getFetchNamespaceStrategiesFailure(state: Object) {
+  return getFailure(state, FETCH_NAMESPACESTRATEGIES_TYPES);
+}
--- a/scm-ui/src/config/modules/namespaceStrategies.test.js
+++ b/scm-ui/src/config/modules/namespaceStrategies.test.js
@@ -0,0 +1,199 @@
+// @flow
+import fetchMock from "fetch-mock";
+import configureMockStore from "redux-mock-store";
+import thunk from "redux-thunk";
+import {
+  FETCH_NAMESPACESTRATEGIES_TYPES,
+  FETCH_NAMESPACESTRATEGIES_TYPES_FAILURE,
+  FETCH_NAMESPACESTRATEGIES_TYPES_PENDING,
+  FETCH_NAMESPACESTRATEGIES_TYPES_SUCCESS,
+  fetchNamespaceStrategiesIfNeeded,
+  fetchNamespaceStrategiesSuccess,
+  shouldFetchNamespaceStrategies,
+  default as reducer,
+  getNamespaceStrategies,
+  isFetchNamespaceStrategiesPending,
+  getFetchNamespaceStrategiesFailure
+} from "./namespaceStrategies";
+import { MODIFY_CONFIG_SUCCESS } from "./config";
+
+const strategies = {
+  current: "UsernameNamespaceStrategy",
+  available: [
+    "UsernameNamespaceStrategy",
+    "CustomNamespaceStrategy",
+    "CurrentYearNamespaceStrategy",
+    "RepositoryTypeNamespaceStrategy"
+  ],
+  _links: {
+    self: {
+      href: "http://localhost:8081/scm/api/v2/namespaceStrategies"
+    }
+  }
+};
+
+describe("namespace strategy caching", () => {
+  it("should fetch strategies, on empty state", () => {
+    expect(shouldFetchNamespaceStrategies({})).toBe(true);
+  });
+
+  it("should fetch strategies, on empty namespaceStrategies node", () => {
+    const state = {
+      namespaceStrategies: {}
+    };
+    expect(shouldFetchNamespaceStrategies(state)).toBe(true);
+  });
+
+  it("should not fetch strategies, on pending state", () => {
+    const state = {
+      pending: {
+        [FETCH_NAMESPACESTRATEGIES_TYPES]: true
+      }
+    };
+    expect(shouldFetchNamespaceStrategies(state)).toBe(false);
+  });
+
+  it("should not fetch strategies, on failure state", () => {
+    const state = {
+      failure: {
+        [FETCH_NAMESPACESTRATEGIES_TYPES]: new Error("no...")
+      }
+    };
+    expect(shouldFetchNamespaceStrategies(state)).toBe(false);
+  });
+
+  it("should not fetch strategies, if they are already fetched", () => {
+    const state = {
+      namespaceStrategies: {
+        current: "some"
+      }
+    };
+    expect(shouldFetchNamespaceStrategies(state)).toBe(false);
+  });
+});
+
+describe("namespace strategies fetch", () => {
+  const URL = "http://scm.hitchhiker.com/api/v2/namespaceStrategies";
+  const mockStore = configureMockStore([thunk]);
+
+  afterEach(() => {
+    fetchMock.reset();
+    fetchMock.restore();
+  });
+
+  const createStore = (initialState = {}) => {
+    return mockStore({
+      ...initialState,
+      indexResources: {
+        links: {
+          namespaceStrategies: {
+            href: URL
+          }
+        }
+      }
+    });
+  };
+
+  it("should successfully fetch strategies", () => {
+    fetchMock.getOnce(URL, strategies);
+
+    const expectedActions = [
+      { type: FETCH_NAMESPACESTRATEGIES_TYPES_PENDING },
+      {
+        type: FETCH_NAMESPACESTRATEGIES_TYPES_SUCCESS,
+        payload: strategies
+      }
+    ];
+
+    const store = createStore();
+    return store.dispatch(fetchNamespaceStrategiesIfNeeded()).then(() => {
+      expect(store.getActions()).toEqual(expectedActions);
+    });
+  });
+
+  it("should dispatch FETCH_NAMESPACESTRATEGIES_TYPES_FAILURE on server error", () => {
+    fetchMock.getOnce(URL, {
+      status: 500
+    });
+
+    const store = createStore();
+    return store.dispatch(fetchNamespaceStrategiesIfNeeded()).then(() => {
+      const actions = store.getActions();
+      expect(actions[0].type).toBe(FETCH_NAMESPACESTRATEGIES_TYPES_PENDING);
+      expect(actions[1].type).toBe(FETCH_NAMESPACESTRATEGIES_TYPES_FAILURE);
+      expect(actions[1].payload).toBeDefined();
+    });
+  });
+
+  it("should not dispatch any action, if the strategies are already fetched", () => {
+    const store = createStore({
+      namespaceStrategies: strategies
+    });
+    store.dispatch(fetchNamespaceStrategiesIfNeeded());
+    expect(store.getActions().length).toBe(0);
+  });
+});
+
+describe("namespace strategies reducer", () => {
+  it("should return unmodified state on unknown action", () => {
+    const state = {};
+    expect(reducer(state)).toBe(state);
+  });
+
+  it("should store the strategies on success", () => {
+    const newState = reducer({}, fetchNamespaceStrategiesSuccess(strategies));
+    expect(newState).toBe(strategies);
+  });
+
+  it("should clear store if config was modified", () => {
+    const modifyConfigAction = {
+      type: MODIFY_CONFIG_SUCCESS,
+      payload: {
+        namespaceStrategy: "CustomNamespaceStrategy"
+      }
+    };
+    const newState = reducer(strategies, modifyConfigAction);
+    expect(newState.current).toEqual("CustomNamespaceStrategy");
+  });
+});
+
+describe("namespace strategy selectors", () => {
+  const error = new Error("The end of the universe");
+
+  it("should return an empty object", () => {
+    expect(getNamespaceStrategies({})).toEqual({});
+  });
+
+  it("should return the namespace strategies", () => {
+    const state = {
+      namespaceStrategies: strategies
+    };
+    expect(getNamespaceStrategies(state)).toBe(strategies);
+  });
+
+  it("should return true, when fetch namespace strategies is pending", () => {
+    const state = {
+      pending: {
+        [FETCH_NAMESPACESTRATEGIES_TYPES]: true
+      }
+    };
+    expect(isFetchNamespaceStrategiesPending(state)).toEqual(true);
+  });
+
+  it("should return false, when fetch strategies is not pending", () => {
+    expect(isFetchNamespaceStrategiesPending({})).toEqual(false);
+  });
+
+  it("should return error when fetch namespace strategies did fail", () => {
+    const state = {
+      failure: {
+        [FETCH_NAMESPACESTRATEGIES_TYPES]: error
+      }
+    };
+    expect(getFetchNamespaceStrategiesFailure(state)).toEqual(error);
+  });
+
+  it("should return undefined when fetch strategies did not fail", () => {
+    expect(getFetchNamespaceStrategiesFailure({})).toBe(undefined);
+  });
+});
--- a/scm-ui/src/createReduxStore.js
+++ b/scm-ui/src/createReduxStore.js
@@ -15,6 +15,7 @@ import pending from "./modules/pending";
 import failure from "./modules/failure";
 import permissions from "./repos/permissions/modules/permissions";
 import config from "./config/modules/config";
+import namespaceStrategies from "./config/modules/namespaceStrategies";
 import indexResources from "./modules/indexResource";

 import type { BrowserHistory } from "history/createBrowserHistory";
@@ -38,7 +39,8 @@ function createReduxStore(history: BrowserHistory) {
    groups,
    auth,
    config,
-    sources
+    sources,
+    namespaceStrategies
  });

  return createStore(
--- a/scm-ui/src/repos/components/form/RepositoryForm.js
+++ b/scm-ui/src/repos/components/form/RepositoryForm.js
@@ -8,6 +8,7 @@ import {
  SubmitButton,
  Textarea
 } from "@scm-manager/ui-components";
+import { ExtensionPoint } from "@scm-manager/ui-extensions";
 import type { Repository, RepositoryType } from "@scm-manager/ui-types";
 import * as validator from "./repositoryValidation";

@@ -15,16 +16,20 @@ type Props = {
  submitForm: Repository => void,
  repository?: Repository,
  repositoryTypes: RepositoryType[],
+  namespaceStrategy: string,
  loading?: boolean,
  t: string => string
 };

 type State = {
  repository: Repository,
+  namespaceValidationError: boolean,
  nameValidationError: boolean,
  contactValidationError: boolean
 };

+const CUSTOM_NAMESPACE_STRATEGY = "CustomNamespaceStrategy";
+
 class RepositoryForm extends React.Component<Props, State> {
  constructor(props: Props) {
    super(props);
@@ -38,9 +43,9 @@ class RepositoryForm extends React.Component<Props, State> {
        description: "",
        _links: {}
      },
+      namespaceValidationError: false,
      nameValidationError: false,
-      contactValidationError: false,
-      descriptionValidationError: false
+      contactValidationError: false
    };
  }

@@ -59,11 +64,14 @@ class RepositoryForm extends React.Component<Props, State> {
  }

  isValid = () => {
-    const repository = this.state.repository;
+    const { namespaceStrategy } = this.props;
+    const { repository } = this.state;
    return !(
+      this.state.namespaceValidationError ||
      this.state.nameValidationError ||
      this.state.contactValidationError ||
-      this.isFalsy(repository.name)
+      this.isFalsy(repository.name) ||
+      (namespaceStrategy === CUSTOM_NAMESPACE_STRATEGY && this.isFalsy(repository.namespace))
    );
  };

@@ -127,6 +135,31 @@ class RepositoryForm extends React.Component<Props, State> {
    });
  }

+  renderNamespaceField = () => {
+    const { namespaceStrategy, t } = this.props;
+    const repository = this.state.repository;
+    const props = {
+      label: t("repository.namespace"),
+      helpText: t("help.namespaceHelpText"),
+      value: repository ? repository.namespace : "",
+      onChange: this.handleNamespaceChange,
+      errorMessage: t("validation.namespace-invalid"),
+      validationError: this.state.namespaceValidationError
+    };
+
+    if (namespaceStrategy === CUSTOM_NAMESPACE_STRATEGY) {
+      return <InputField {...props} />;
+    }
+
+    return (
+      <ExtensionPoint
+        name="repos.create.namespace"
+        props={props}
+        renderAll={false}
+      />
+    );
+  };
+
  renderCreateOnlyFields() {
    if (!this.isCreateMode()) {
      return null;
@@ -135,6 +168,7 @@ class RepositoryForm extends React.Component<Props, State> {
    const repository = this.state.repository;
    return (
      <>
+        {this.renderNamespaceField()}
        <InputField
          label={t("repository.name")}
          onChange={this.handleNameChange}
@@ -154,6 +188,13 @@ class RepositoryForm extends React.Component<Props, State> {
    );
  }

+  handleNamespaceChange = (namespace: string) => {
+    this.setState({
+      namespaceValidationError: !validator.isNameValid(namespace),
+      repository: { ...this.state.repository, namespace }
+    });
+  };
+
  handleNameChange = (name: string) => {
    this.setState({
      nameValidationError: !validator.isNameValid(name),
--- a/scm-ui/src/repos/components/form/repositoryValidation.js
+++ b/scm-ui/src/repos/components/form/repositoryValidation.js
@@ -1,8 +1,10 @@
 // @flow
 import { validation } from "@scm-manager/ui-components";

+const nameRegex = /(?!^\.\.$)(?!^\.$)(?!.*[\\\[\]])^[A-Za-z0-9\.][A-Za-z0-9\.\-_]*$/;
+
 export const isNameValid = (name: string) => {
-  return validation.isNameValid(name);
+  return nameRegex.test(name);
 };

 export function isContactValid(mail: string) {
--- a/scm-ui/src/repos/components/form/repositoryValidation.test.js
+++ b/scm-ui/src/repos/components/form/repositoryValidation.test.js
@@ -11,6 +11,81 @@ describe("repository name validation", () => {
    expect(validator.isNameValid("scm/manager")).toBe(false);
    expect(validator.isNameValid("scm/ma/nager")).toBe(false);
  });
+
+  it("should allow same names as the backend", () => {
+    const validPaths = [
+      "scm",
+      "s",
+      "sc",
+      ".hiddenrepo",
+      "b.",
+      "...",
+      "..c",
+      "d..",
+      "a..c"
+    ];
+
+    validPaths.forEach((path) =>
+      expect(validator.isNameValid(path)).toBe(true)
+    );
+  });
+
+  it("should deny same names as the backend", () => {
+    const invalidPaths = [
+      ".",
+      "/",
+      "//",
+      "..",
+      "/.",
+      "/..",
+      "./",
+      "../",
+      "/../",
+      "/./",
+      "/...",
+      "/abc",
+      ".../",
+      "/sdf/",
+      "asdf/",
+      "./b",
+      "scm/plugins/.",
+      "scm/../plugins",
+      "scm/main/",
+      "/scm/main/",
+      "scm/./main",
+      "scm//main",
+      "scm\\main",
+      "scm/main-$HOME",
+      "scm/main-${HOME}-home",
+      "scm/main-%HOME-home",
+      "scm/main-%HOME%-home",
+      "abc$abc",
+      "abc%abc",
+      "abc<abc",
+      "abc>abc",
+      "abc#abc",
+      "abc+abc",
+      "abc{abc",
+      "abc}abc",
+      "abc(abc",
+      "abc)abc",
+      "abc[abc",
+      "abc]abc",
+      "abc|abc",
+      "scm/main",
+      "scm/plugins/git-plugin",
+      ".scm/plugins",
+      "a/b..",
+      "a/..b",
+      "scm/main",
+      "scm/plugins/git-plugin",
+      "scm/plugins/git-plugin"
+    ];
+
+    invalidPaths.forEach((path) =>
+      expect(validator.isNameValid(path)).toBe(false)
+    );
+  });
 });

 describe("repository contact validation", () => {
--- a/scm-ui/src/repos/containers/Create.js
+++ b/scm-ui/src/repos/containers/Create.js
@@ -4,7 +4,7 @@ import { connect } from "react-redux";
 import { translate } from "react-i18next";
 import { Page } from "@scm-manager/ui-components";
 import RepositoryForm from "../components/form";
-import type { Repository, RepositoryType } from "@scm-manager/ui-types";
+import type { Repository, RepositoryType, NamespaceStrategies } from "@scm-manager/ui-types";
 import {
  fetchRepositoryTypesIfNeeded,
  getFetchRepositoryTypesFailure,
@@ -19,15 +19,21 @@ import {
 } from "../modules/repos";
 import type { History } from "history";
 import { getRepositoriesLink } from "../../modules/indexResource";
+import {
+  fetchNamespaceStrategiesIfNeeded,
+  getFetchNamespaceStrategiesFailure, getNamespaceStrategies, isFetchNamespaceStrategiesPending
+} from "../../config/modules/namespaceStrategies";

 type Props = {
  repositoryTypes: RepositoryType[],
-  typesLoading: boolean,
+  namespaceStrategies: NamespaceStrategies,
+  pageLoading: boolean,
  createLoading: boolean,
  error: Error,
  repoLink: string,

  // dispatch functions
+  fetchNamespaceStrategiesIfNeeded: () => void,
  fetchRepositoryTypesIfNeeded: () => void,
  createRepo: (
    link: string,
@@ -45,6 +51,7 @@ class Create extends React.Component<Props> {
  componentDidMount() {
    this.props.resetForm();
    this.props.fetchRepositoryTypesIfNeeded();
+    this.props.fetchNamespaceStrategiesIfNeeded();
  }

  repoCreated = (repo: Repository) => {
@@ -55,9 +62,10 @@ class Create extends React.Component<Props> {

  render() {
    const {
-      typesLoading,
+      pageLoading,
      createLoading,
      repositoryTypes,
+      namespaceStrategies,
      createRepo,
      error
    } = this.props;
@@ -67,13 +75,14 @@ class Create extends React.Component<Props> {
      <Page
        title={t("create.title")}
        subtitle={t("create.subtitle")}
-        loading={typesLoading}
+        loading={pageLoading}
        error={error}
        showContentOnError={true}
      >
        <RepositoryForm
          repositoryTypes={repositoryTypes}
          loading={createLoading}
+          namespaceStrategy={namespaceStrategies.current}
          submitForm={repo => {
            createRepo(repoLink, repo, (repo: Repository) =>
              this.repoCreated(repo)
@@ -87,14 +96,18 @@ class Create extends React.Component<Props> {

 const mapStateToProps = state => {
  const repositoryTypes = getRepositoryTypes(state);
-  const typesLoading = isFetchRepositoryTypesPending(state);
+  const namespaceStrategies = getNamespaceStrategies(state);
+  const pageLoading = isFetchRepositoryTypesPending(state)
+    || isFetchNamespaceStrategiesPending(state);
  const createLoading = isCreateRepoPending(state);
-  const error =
-    getFetchRepositoryTypesFailure(state) || getCreateRepoFailure(state);
+  const error = getFetchRepositoryTypesFailure(state) 
+    || getCreateRepoFailure(state)
+    || getFetchNamespaceStrategiesFailure(state);
  const repoLink = getRepositoriesLink(state);
  return {
    repositoryTypes,
-    typesLoading,
+    namespaceStrategies,
+    pageLoading,
    createLoading,
    error,
    repoLink
@@ -106,6 +119,9 @@ const mapDispatchToProps = dispatch => {
    fetchRepositoryTypesIfNeeded: () => {
      dispatch(fetchRepositoryTypesIfNeeded());
    },
+    fetchNamespaceStrategiesIfNeeded: () => {
+      dispatch(fetchNamespaceStrategiesIfNeeded());
+    },
    createRepo: (
      link: string,
      repository: Repository,
--- a/scm-ui/src/repos/sources/components/content/SourcecodeViewer.js
+++ b/scm-ui/src/repos/sources/components/content/SourcecodeViewer.js
@@ -1,11 +1,9 @@
 // @flow
 import React from "react";
 import { translate } from "react-i18next";
-import { apiClient } from "@scm-manager/ui-components";
+import { apiClient, SyntaxHighlighter } from "@scm-manager/ui-components";
 import type { File } from "@scm-manager/ui-types";
 import { ErrorNotification, Loading } from "@scm-manager/ui-components";
-import SyntaxHighlighter from "react-syntax-highlighter";
-import { arduinoLight } from "react-syntax-highlighter/styles/hljs";

 type Props = {
  t: string => string,
@@ -68,12 +66,9 @@ class SourcecodeViewer extends React.Component<Props, State> {

    return (
      <SyntaxHighlighter
-        showLineNumbers="true"
        language={getLanguage(language)}
-        style={arduinoLight}
-      >
-        {content}
-      </SyntaxHighlighter>
+        value= {content}
+      />
    );
  }
 }
--- a/scm-webapp/src/main/java/sonia/scm/api/v2/resources/ConfigDto.java
+++ b/scm-webapp/src/main/java/sonia/scm/api/v2/resources/ConfigDto.java
@@ -35,7 +35,7 @@ public class ConfigDto extends HalRepresentation {
  private String pluginUrl;
  private long loginAttemptLimitTimeout;
  private boolean enabledXsrfProtection;
-  private String defaultNamespaceStrategy;
+  private String namespaceStrategy;

  @Override
  @SuppressWarnings("squid:S1185") // We want to have this method available in this package
--- a/scm-webapp/src/main/java/sonia/scm/api/v2/resources/ConfigResource.java
+++ b/scm-webapp/src/main/java/sonia/scm/api/v2/resources/ConfigResource.java
@@ -5,6 +5,7 @@ import com.webcohesion.enunciate.metadata.rs.StatusCodes;
 import com.webcohesion.enunciate.metadata.rs.TypeHint;
 import sonia.scm.config.ConfigurationPermissions;
 import sonia.scm.config.ScmConfiguration;
+import sonia.scm.repository.NamespaceStrategyValidator;
 import sonia.scm.util.ScmConfigurationUtil;
 import sonia.scm.web.VndMediaType;

@@ -27,12 +28,16 @@ public class ConfigResource {
  private final ConfigDtoToScmConfigurationMapper dtoToConfigMapper;
  private final ScmConfigurationToConfigDtoMapper configToDtoMapper;
  private final ScmConfiguration configuration;
+  private final NamespaceStrategyValidator namespaceStrategyValidator;

  @Inject
-  public ConfigResource(ConfigDtoToScmConfigurationMapper dtoToConfigMapper, ScmConfigurationToConfigDtoMapper configToDtoMapper, ScmConfiguration configuration) {
+  public ConfigResource(ConfigDtoToScmConfigurationMapper dtoToConfigMapper,
+                        ScmConfigurationToConfigDtoMapper configToDtoMapper,
+                        ScmConfiguration configuration, NamespaceStrategyValidator namespaceStrategyValidator) {
    this.dtoToConfigMapper = dtoToConfigMapper;
    this.configToDtoMapper = configToDtoMapper;
    this.configuration = configuration;
+    this.namespaceStrategyValidator = namespaceStrategyValidator;
  }

  /**
@@ -78,6 +83,9 @@ public class ConfigResource {
    // But to where to check? load() or store()? Leave it for now, SCMv1 legacy that can be cleaned up later.
    ConfigurationPermissions.write(configuration).check();

+    // ensure the namespace strategy is valid
+    namespaceStrategyValidator.check(configDto.getNamespaceStrategy());
+
    ScmConfiguration config = dtoToConfigMapper.map(configDto);
    synchronized (ScmConfiguration.class) {
      configuration.load(config);
--- a/scm-webapp/src/main/java/sonia/scm/api/v2/resources/IndexDtoGenerator.java
+++ b/scm-webapp/src/main/java/sonia/scm/api/v2/resources/IndexDtoGenerator.java
@@ -59,6 +59,9 @@ public class IndexDtoGenerator extends HalAppenderMapper {
        builder.single(link("permissions", resourceLinks.permissions().self()));
      }
      builder.single(link("availableRepositoryPermissions", resourceLinks.availableRepositoryPermissions().self()));
+
+      builder.single(link("repositoryTypes", resourceLinks.repositoryTypeCollection().self()));
+      builder.single(link("namespaceStrategies", resourceLinks.namespaceStrategies().self()));
    } else {
      builder.single(link("login", resourceLinks.authentication().jsonLogin()));
    }
--- a/scm-webapp/src/main/java/sonia/scm/api/v2/resources/NamespaceStrategiesDto.java
+++ b/scm-webapp/src/main/java/sonia/scm/api/v2/resources/NamespaceStrategiesDto.java
@@ -0,0 +1,20 @@
+package sonia.scm.api.v2.resources;
+
+import de.otto.edison.hal.HalRepresentation;
+import de.otto.edison.hal.Links;
+import lombok.Getter;
+
+import java.util.List;
+
+@Getter
+public class NamespaceStrategiesDto extends HalRepresentation {
+
+  private String current;
+  private List<String> available;
+
+  public NamespaceStrategiesDto(String current, List<String> available, Links links) {
+    super(links);
+    this.current = current;
+    this.available = available;
+  }
+}
--- a/scm-webapp/src/main/java/sonia/scm/api/v2/resources/NamespaceStrategyResource.java
+++ b/scm-webapp/src/main/java/sonia/scm/api/v2/resources/NamespaceStrategyResource.java
@@ -0,0 +1,63 @@
+package sonia.scm.api.v2.resources;
+
+import de.otto.edison.hal.Links;
+import sonia.scm.repository.NamespaceStrategy;
+import sonia.scm.web.VndMediaType;
+
+import javax.inject.Inject;
+import javax.inject.Provider;
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.Context;
+import javax.ws.rs.core.UriInfo;
+import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+/**
+ * RESTFul WebService Endpoint for namespace strategies.
+ */
+@Path(NamespaceStrategyResource.PATH)
+public class NamespaceStrategyResource {
+
+  static final String PATH = "v2/namespaceStrategies";
+
+  private Set<NamespaceStrategy> namespaceStrategies;
+  private Provider<NamespaceStrategy> namespaceStrategyProvider;
+
+  @Inject
+  public NamespaceStrategyResource(Set<NamespaceStrategy> namespaceStrategies, Provider<NamespaceStrategy> namespaceStrategyProvider) {
+    this.namespaceStrategies = namespaceStrategies;
+    this.namespaceStrategyProvider = namespaceStrategyProvider;
+  }
+
+  /**
+   * Returns all available namespace strategies and the current selected.
+   *
+   * @param uriInfo uri info
+   *
+   * @return available and current namespace strategies
+   */
+  @GET
+  @Path("")
+  @Produces(VndMediaType.NAMESPACE_STRATEGIES)
+  public NamespaceStrategiesDto get(@Context UriInfo uriInfo) {
+    String currentStrategy = strategyAsString(namespaceStrategyProvider.get());
+    List<String> availableStrategies = collectStrategyNames();
+
+    return new NamespaceStrategiesDto(currentStrategy, availableStrategies, createLinks(uriInfo));
+  }
+
+  private Links createLinks(@Context UriInfo uriInfo) {
+    return Links.linkingTo().self(uriInfo.getAbsolutePath().toASCIIString()).build();
+  }
+
+  private String strategyAsString(NamespaceStrategy namespaceStrategy) {
+    return namespaceStrategy.getClass().getSimpleName();
+  }
+
+  private List<String> collectStrategyNames() {
+    return namespaceStrategies.stream().map(this::strategyAsString).collect(Collectors.toList());
+  }
+}
--- a/scm-webapp/src/main/java/sonia/scm/api/v2/resources/RepositoryDto.java
+++ b/scm-webapp/src/main/java/sonia/scm/api/v2/resources/RepositoryDto.java
@@ -9,6 +9,7 @@ import lombok.NoArgsConstructor;
 import lombok.Setter;
 import org.hibernate.validator.constraints.Email;
 import org.hibernate.validator.constraints.NotEmpty;
+import sonia.scm.util.ValidationUtil;

 import javax.validation.constraints.Pattern;
 import java.time.Instant;
@@ -25,8 +26,9 @@ public class RepositoryDto extends HalRepresentation {
  private List<HealthCheckFailureDto> healthCheckFailures;
  @JsonInclude(JsonInclude.Include.NON_NULL)
  private Instant lastModified;
+  // we could not validate the namespace, this must be done by the namespace strategy
  private String namespace;
-  @Pattern(regexp = "^[A-z0-9\\-_]+$")
+  @Pattern(regexp = ValidationUtil.REGEX_REPOSITORYNAME)
  private String name;
  private boolean archived = false;
  @NotEmpty
--- a/scm-webapp/src/main/java/sonia/scm/api/v2/resources/ResourceLinks.java
+++ b/scm-webapp/src/main/java/sonia/scm/api/v2/resources/ResourceLinks.java
@@ -277,6 +277,23 @@ class ResourceLinks {
    }
  }

+  public NamespaceStrategiesLinks namespaceStrategies() {
+    return new NamespaceStrategiesLinks(scmPathInfoStore.get());
+  }
+
+  static class NamespaceStrategiesLinks {
+
+    private final LinkBuilder namespaceStrategiesLinkBuilder;
+
+    NamespaceStrategiesLinks(ScmPathInfo pathInfo) {
+      namespaceStrategiesLinkBuilder = new LinkBuilder(pathInfo, NamespaceStrategyResource.class);
+    }
+
+    String self() {
+      return namespaceStrategiesLinkBuilder.method("get").parameters().href();
+    }
+  }
+
  public RepositoryTypeLinks repositoryType() {
    return new RepositoryTypeLinks(scmPathInfoStore.get());
  }
--- a/scm-webapp/src/main/java/sonia/scm/repository/CurrentYearNamespaceStrategy.java
+++ b/scm-webapp/src/main/java/sonia/scm/repository/CurrentYearNamespaceStrategy.java
@@ -0,0 +1,29 @@
+package sonia.scm.repository;
+
+import com.google.common.annotations.VisibleForTesting;
+import sonia.scm.plugin.Extension;
+
+import javax.inject.Inject;
+import java.time.Clock;
+import java.time.Year;
+
+@Extension
+public class CurrentYearNamespaceStrategy implements NamespaceStrategy {
+
+  private final Clock clock;
+
+  @Inject
+  public CurrentYearNamespaceStrategy() {
+    this(Clock.systemDefaultZone());
+  }
+
+  @VisibleForTesting
+  CurrentYearNamespaceStrategy(Clock clock) {
+    this.clock = clock;
+  }
+
+  @Override
+  public String createNamespace(Repository repository) {
+    return String.valueOf(Year.now(clock).getValue());
+  }
+}
--- a/scm-webapp/src/main/java/sonia/scm/repository/CustomNamespaceStrategy.java
+++ b/scm-webapp/src/main/java/sonia/scm/repository/CustomNamespaceStrategy.java
@@ -0,0 +1,20 @@
+package sonia.scm.repository;
+
+import sonia.scm.plugin.Extension;
+import sonia.scm.util.ValidationUtil;
+
+import static sonia.scm.ScmConstraintViolationException.Builder.doThrow;
+
+@Extension
+public class CustomNamespaceStrategy implements NamespaceStrategy {
+  @Override
+  public String createNamespace(Repository repository) {
+    String namespace = repository.getNamespace();
+
+    doThrow()
+      .violation("invalid namespace", "namespace")
+      .when(!ValidationUtil.isRepositoryNameValid(namespace));
+
+    return namespace;
+  }
+}
--- a/scm-webapp/src/main/java/sonia/scm/repository/DefaultNamespaceStrategy.java
+++ b/scm-webapp/src/main/java/sonia/scm/repository/DefaultNamespaceStrategy.java
@@ -1,24 +0,0 @@
-package sonia.scm.repository;
-
-import com.google.common.base.Strings;
-import org.apache.shiro.SecurityUtils;
-import sonia.scm.plugin.Extension;
-
-/**
- * The DefaultNamespaceStrategy returns the predefined namespace of the given repository, if the namespace was not set
- * the username of the currently loggedin user is used.
- *
- * @since 2.0.0
- */
-@Extension
-public class DefaultNamespaceStrategy implements NamespaceStrategy {
-
-  @Override
-  public String createNamespace(Repository repository) {
-    String namespace = repository.getNamespace();
-    if (Strings.isNullOrEmpty(namespace)) {
-      namespace = SecurityUtils.getSubject().getPrincipal().toString();
-    }
-    return namespace;
-  }
-}
--- a/scm-webapp/src/main/java/sonia/scm/repository/DefaultRepositoryManager.java
+++ b/scm-webapp/src/main/java/sonia/scm/repository/DefaultRepositoryManager.java
@@ -52,6 +52,7 @@ import sonia.scm.util.CollectionAppender;
 import sonia.scm.util.IOUtil;
 import sonia.scm.util.Util;

+import javax.inject.Provider;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.Comparator;
@@ -85,7 +86,7 @@ public class DefaultRepositoryManager extends AbstractRepositoryManager {
  private final KeyGenerator keyGenerator;
  private final RepositoryDAO repositoryDAO;
  private final Set<Type> types;
-  private NamespaceStrategy namespaceStrategy;
+  private final Provider<NamespaceStrategy> namespaceStrategyProvider;
  private final ManagerDaoAdapter<Repository> managerDaoAdapter;


@@ -93,11 +94,11 @@ public class DefaultRepositoryManager extends AbstractRepositoryManager {
  public DefaultRepositoryManager(ScmConfiguration configuration,
                                  SCMContextProvider contextProvider, KeyGenerator keyGenerator,
                                  RepositoryDAO repositoryDAO, Set<RepositoryHandler> handlerSet,
-                                  NamespaceStrategy namespaceStrategy) {
+                                  Provider<NamespaceStrategy> namespaceStrategyProvider) {
    this.configuration = configuration;
    this.keyGenerator = keyGenerator;
    this.repositoryDAO = repositoryDAO;
-    this.namespaceStrategy = namespaceStrategy;
+    this.namespaceStrategyProvider = namespaceStrategyProvider;

    ThreadFactory factory = new ThreadFactoryBuilder()
      .setNameFormat(THREAD_NAME).build();
@@ -131,7 +132,7 @@ public class DefaultRepositoryManager extends AbstractRepositoryManager {

  public Repository create(Repository repository, boolean initRepository) {
    repository.setId(keyGenerator.createKey());
-    repository.setNamespace(namespaceStrategy.createNamespace(repository));
+    repository.setNamespace(namespaceStrategyProvider.get().createNamespace(repository));

    logger.info("create repository {}/{} of type {} in namespace {}", repository.getNamespace(), repository.getName(), repository.getType(), repository.getNamespace());

--- a/scm-webapp/src/main/java/sonia/scm/repository/NamespaceStrategyProvider.java
+++ b/scm-webapp/src/main/java/sonia/scm/repository/NamespaceStrategyProvider.java
@@ -1,5 +1,7 @@
 package sonia.scm.repository;

+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import sonia.scm.config.ScmConfiguration;

 import javax.inject.Inject;
@@ -8,6 +10,8 @@ import java.util.Set;

 public class NamespaceStrategyProvider implements Provider<NamespaceStrategy> {

+  private static final Logger LOG = LoggerFactory.getLogger(NamespaceStrategyProvider.class);
+
  private final Set<NamespaceStrategy> strategies;
  private final ScmConfiguration scmConfiguration;

@@ -19,14 +23,16 @@ public class NamespaceStrategyProvider implements Provider<NamespaceStrategy> {

  @Override
  public NamespaceStrategy get() {
-    String namespaceStrategy = scmConfiguration.getDefaultNamespaceStrategy();
+    String namespaceStrategy = scmConfiguration.getNamespaceStrategy();

    for (NamespaceStrategy s : this.strategies) {
-      if (s.getClass().getCanonicalName().equals(namespaceStrategy)) {
+      if (s.getClass().getSimpleName().equals(namespaceStrategy)) {
          return s;
      }
    }
-    return null;
+
+    LOG.warn("could not find namespace strategy {}, using default strategy", namespaceStrategy);
+    return new UsernameNamespaceStrategy();
  }

 }
--- a/scm-webapp/src/main/java/sonia/scm/repository/NamespaceStrategyValidator.java
+++ b/scm-webapp/src/main/java/sonia/scm/repository/NamespaceStrategyValidator.java
@@ -0,0 +1,26 @@
+package sonia.scm.repository;
+
+import javax.inject.Inject;
+import java.util.Set;
+
+import static sonia.scm.ScmConstraintViolationException.Builder.doThrow;
+
+public class NamespaceStrategyValidator {
+
+  private final Set<NamespaceStrategy> strategies;
+
+  @Inject
+  public NamespaceStrategyValidator(Set<NamespaceStrategy> strategies) {
+    this.strategies = strategies;
+  }
+
+  public void check(String name) {
+    doThrow()
+      .violation("unknown NamespaceStrategy " + name, "namespaceStrategy")
+      .when(!isValid(name));
+  }
+
+  private boolean isValid(String name) {
+    return strategies.stream().anyMatch(ns -> ns.getClass().getSimpleName().equals(name));
+  }
+}
--- a/scm-webapp/src/main/java/sonia/scm/repository/RepositoryTypeNamespaceStrategy.java
+++ b/scm-webapp/src/main/java/sonia/scm/repository/RepositoryTypeNamespaceStrategy.java
@@ -0,0 +1,11 @@
+package sonia.scm.repository;
+
+import sonia.scm.plugin.Extension;
+
+@Extension
+public class RepositoryTypeNamespaceStrategy implements NamespaceStrategy {
+  @Override
+  public String createNamespace(Repository repository) {
+    return repository.getType();
+  }
+}
--- a/scm-webapp/src/main/java/sonia/scm/repository/UsernameNamespaceStrategy.java
+++ b/scm-webapp/src/main/java/sonia/scm/repository/UsernameNamespaceStrategy.java
@@ -0,0 +1,13 @@
+package sonia.scm.repository;
+
+import org.apache.shiro.SecurityUtils;
+import sonia.scm.plugin.Extension;
+
+@Extension
+public class UsernameNamespaceStrategy implements NamespaceStrategy {
+
+  @Override
+  public String createNamespace(Repository repository) {
+    return SecurityUtils.getSubject().getPrincipal().toString();
+  }
+}
--- a/scm-webapp/src/main/resources/locales/de/plugins.json
+++ b/scm-webapp/src/main/resources/locales/de/plugins.json
@@ -103,6 +103,7 @@
    "errorCode": "Fehlercode",
    "transactionId": "Transaktions-ID",
    "moreInfo": "Für mehr Informationen, siehe",
+    "violations": "Ungültige Werte:",
    "AGR7UzkhA1": {
      "displayName": "Nicht gefunden",
      "description": "Der gewünschte Datensatz konnte nicht gefunden werden. Möglicherweise wurde er in einer weiteren Session gelöscht."
@@ -147,5 +148,11 @@
      "displayName": "Ungültige Eingabe",
      "description": "Die eingegebenen Daten konnten nicht validiert werden. Bitte korrigieren Sie die Eingaben und senden Sie sie erneut."
    }
+  },
+  "namespaceStrategies": {
+    "UsernameNamespaceStrategy":  "Benutzername",
+    "CustomNamespaceStrategy":  "Benutzerdefiniert",
+    "CurrentYearNamespaceStrategy":  "Aktuelles Jahr",
+    "RepositoryTypeNamespaceStrategy": "Repository Typ"
  }
 }
--- a/scm-webapp/src/main/resources/locales/en/plugins.json
+++ b/scm-webapp/src/main/resources/locales/en/plugins.json
@@ -103,6 +103,7 @@
    "errorCode": "Error Code",
    "transactionId": "Transaction ID",
    "moreInfo": "For more information, see",
+    "violations": "Violations:",
    "AGR7UzkhA1": {
      "displayName": "Not found",
      "description": "The requested entity could not be found. It may have been deleted in another session."
@@ -147,5 +148,11 @@
      "displayName": "Illegal input",
      "description": "The values could not be validated. Please correct your input and try again."
    }
+  },
+  "namespaceStrategies": {
+    "UsernameNamespaceStrategy":  "Username",
+    "CustomNamespaceStrategy":  "Custom",
+    "CurrentYearNamespaceStrategy":  "Current year",
+    "RepositoryTypeNamespaceStrategy": "Repository type"
  }
 }
--- a/scm-webapp/src/test/java/sonia/scm/api/v2/resources/ConfigDtoToScmConfigurationMapperTest.java
+++ b/scm-webapp/src/test/java/sonia/scm/api/v2/resources/ConfigDtoToScmConfigurationMapperTest.java
@@ -51,7 +51,7 @@ public class ConfigDtoToScmConfigurationMapperTest {
    assertEquals("https://plug.ins" , config.getPluginUrl());
    assertEquals(40 , config.getLoginAttemptLimitTimeout());
    assertTrue(config.isEnabledXsrfProtection());
-    assertEquals("username", config.getDefaultNamespaceStrategy());
+    assertEquals("username", config.getNamespaceStrategy());
  }

  private ConfigDto createDefaultDto() {
@@ -76,7 +76,7 @@ public class ConfigDtoToScmConfigurationMapperTest {
    configDto.setPluginUrl("https://plug.ins");
    configDto.setLoginAttemptLimitTimeout(40);
    configDto.setEnabledXsrfProtection(true);
-    configDto.setDefaultNamespaceStrategy("username");
+    configDto.setNamespaceStrategy("username");

    return configDto;
  }
--- a/scm-webapp/src/test/java/sonia/scm/api/v2/resources/ConfigResourceTest.java
+++ b/scm-webapp/src/test/java/sonia/scm/api/v2/resources/ConfigResourceTest.java
@@ -13,7 +13,9 @@ import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
 import org.mockito.InjectMocks;
+import org.mockito.Mock;
 import sonia.scm.config.ScmConfiguration;
+import sonia.scm.repository.NamespaceStrategyValidator;
 import sonia.scm.web.VndMediaType;

 import javax.servlet.http.HttpServletResponse;
@@ -22,10 +24,12 @@ import java.io.UnsupportedEncodingException;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.net.URL;
+import java.nio.charset.StandardCharsets;

 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.verify;
 import static org.mockito.MockitoAnnotations.initMocks;

@SubjectAware(
@@ -46,6 +50,9 @@ public class ConfigResourceTest {
  @SuppressWarnings("unused") // Is injected
  private ResourceLinks resourceLinks = ResourceLinksMock.createMock(baseUri);

+  @Mock
+  private NamespaceStrategyValidator namespaceStrategyValidator;
+
  @InjectMocks
  private ConfigDtoToScmConfigurationMapperImpl dtoToConfigMapper;
  @InjectMocks
@@ -62,7 +69,7 @@ public class ConfigResourceTest {
  public void prepareEnvironment() {
    initMocks(this);

-    ConfigResource configResource = new ConfigResource(dtoToConfigMapper, configToDtoMapper, createConfiguration());
+    ConfigResource configResource = new ConfigResource(dtoToConfigMapper, configToDtoMapper, createConfiguration(), namespaceStrategyValidator);

    dispatcher.getRegistry().addSingletonResource(configResource);
  }
@@ -140,6 +147,21 @@ public class ConfigResourceTest {
    assertEquals(HttpServletResponse.SC_BAD_REQUEST, response.getStatus());
  }

+
+  @Test
+  @SubjectAware(username = "readWrite")
+  public void shouldValidateNamespaceStrategy() throws URISyntaxException {
+    MockHttpRequest request = MockHttpRequest.put("/" + ConfigResource.CONFIG_PATH_V2)
+      .contentType(VndMediaType.CONFIG)
+      .content("{ \"namespaceStrategy\": \"AwesomeStrategy\" }".getBytes(StandardCharsets.UTF_8));
+
+    MockHttpResponse response = new MockHttpResponse();
+    dispatcher.invoke(request, response);
+
+    assertEquals(HttpServletResponse.SC_NO_CONTENT, response.getStatus());
+    verify(namespaceStrategyValidator).check("AwesomeStrategy");
+  }
+
  private MockHttpRequest post(String resourceName) throws IOException, URISyntaxException {
    URL url = Resources.getResource(resourceName);
    byte[] configJson = Resources.toByteArray(url);
--- a/scm-webapp/src/test/java/sonia/scm/api/v2/resources/NamespaceStrategyResourceTest.java
+++ b/scm-webapp/src/test/java/sonia/scm/api/v2/resources/NamespaceStrategyResourceTest.java
@@ -0,0 +1,74 @@
+package sonia.scm.api.v2.resources;
+
+import com.google.common.collect.Lists;
+import com.google.inject.util.Providers;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+import sonia.scm.repository.NamespaceStrategy;
+import sonia.scm.repository.Repository;
+
+import javax.inject.Provider;
+import javax.ws.rs.core.UriInfo;
+import java.net.URI;
+import java.util.LinkedHashSet;
+import java.util.Set;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.when;
+
+@ExtendWith(MockitoExtension.class)
+class NamespaceStrategyResourceTest {
+
+  @Mock
+  private UriInfo uriInfo;
+
+  @Test
+  void shouldReturnNamespaceStrategies() {
+    when(uriInfo.getAbsolutePath()).thenReturn(URI.create("/namespace-strategies"));
+
+    Set<NamespaceStrategy> namespaceStrategies = allStrategies();
+    Provider<NamespaceStrategy> current = Providers.of(new MegaNamespaceStrategy());
+
+    NamespaceStrategyResource resource = new NamespaceStrategyResource(namespaceStrategies, current);
+
+    NamespaceStrategiesDto dto = resource.get(uriInfo);
+    assertThat(dto.getCurrent()).isEqualTo(MegaNamespaceStrategy.class.getSimpleName());
+    assertThat(dto.getAvailable()).contains(
+      AwesomeNamespaceStrategy.class.getSimpleName(),
+      SuperNamespaceStrategy.class.getSimpleName(),
+      MegaNamespaceStrategy.class.getSimpleName()
+    );
+    assertThat(dto.getLinks().getLinkBy("self").get().getHref()).isEqualTo("/namespace-strategies");
+  }
+
+  private Set<NamespaceStrategy> allStrategies() {
+    return  strategies(new AwesomeNamespaceStrategy(), new SuperNamespaceStrategy(), new MegaNamespaceStrategy());
+  }
+
+  private Set<NamespaceStrategy> strategies(NamespaceStrategy... strategies) {
+    return new LinkedHashSet<>(Lists.newArrayList(strategies));
+  }
+
+  private static class AwesomeNamespaceStrategy implements NamespaceStrategy {
+    @Override
+    public String createNamespace(Repository repository) {
+      return "awesome";
+    }
+  }
+
+  private static class SuperNamespaceStrategy implements NamespaceStrategy {
+    @Override
+    public String createNamespace(Repository repository) {
+      return "super";
+    }
+  }
+
+  private static class MegaNamespaceStrategy implements NamespaceStrategy {
+    @Override
+    public String createNamespace(Repository repository) {
+      return "mega";
+    }
+  }
+}
--- a/scm-webapp/src/test/java/sonia/scm/api/v2/resources/ResourceLinksMock.java
+++ b/scm-webapp/src/test/java/sonia/scm/api/v2/resources/ResourceLinksMock.java
@@ -43,6 +43,8 @@ public class ResourceLinksMock {
    when(resourceLinks.merge()).thenReturn(new ResourceLinks.MergeLinks(uriInfo));
    when(resourceLinks.permissions()).thenReturn(new ResourceLinks.PermissionsLinks(uriInfo));
    when(resourceLinks.availableRepositoryPermissions()).thenReturn(new ResourceLinks.AvailableRepositoryPermissionLinks(uriInfo));
+    when(resourceLinks.repositoryTypeCollection()).thenReturn(new ResourceLinks.RepositoryTypeCollectionLinks(uriInfo));
+    when(resourceLinks.namespaceStrategies()).thenReturn(new ResourceLinks.NamespaceStrategiesLinks(uriInfo));

    return resourceLinks;
  }
--- a/scm-webapp/src/test/java/sonia/scm/api/v2/resources/ScmConfigurationToConfigDtoMapperTest.java
+++ b/scm-webapp/src/test/java/sonia/scm/api/v2/resources/ScmConfigurationToConfigDtoMapperTest.java
@@ -81,7 +81,7 @@ public class ScmConfigurationToConfigDtoMapperTest {
    assertEquals("pluginurl" , dto.getPluginUrl());
    assertEquals(2 , dto.getLoginAttemptLimitTimeout());
    assertTrue(dto.isEnabledXsrfProtection());
-    assertEquals("username", dto.getDefaultNamespaceStrategy());
+    assertEquals("username", dto.getNamespaceStrategy());

    assertEquals(expectedBaseUri.toString(), dto.getLinks().getLinkBy("self").get().getHref());
    assertEquals(expectedBaseUri.toString(), dto.getLinks().getLinkBy("update").get().getHref());
@@ -121,7 +121,7 @@ public class ScmConfigurationToConfigDtoMapperTest {
    config.setPluginUrl("pluginurl");
    config.setLoginAttemptLimitTimeout(2);
    config.setEnabledXsrfProtection(true);
-    config.setDefaultNamespaceStrategy("username");
+    config.setNamespaceStrategy("username");
    return config;
  }

--- a/scm-webapp/src/test/java/sonia/scm/repository/CurrentYearNamespaceStrategyTest.java
+++ b/scm-webapp/src/test/java/sonia/scm/repository/CurrentYearNamespaceStrategyTest.java
@@ -0,0 +1,39 @@
+package sonia.scm.repository;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+
+import java.time.Clock;
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+import java.time.ZoneOffset;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.when;
+
+@ExtendWith(MockitoExtension.class)
+class CurrentYearNamespaceStrategyTest {
+
+  @Mock
+  private Clock clock;
+  private NamespaceStrategy namespaceStrategy;
+
+  @BeforeEach
+  void setupObjectUnderTest() {
+    namespaceStrategy = new CurrentYearNamespaceStrategy(clock);
+  }
+
+  @Test
+  void shouldReturn1985() {
+    LocalDateTime dateTime = LocalDateTime.of(1985, 4, 9, 21, 42);
+    when(clock.instant()).thenReturn(dateTime.toInstant(ZoneOffset.UTC));
+    when(clock.getZone()).thenReturn(ZoneId.systemDefault());
+
+    String namespace = namespaceStrategy.createNamespace(RepositoryTestData.createHeartOfGold());
+    assertThat(namespace).isEqualTo("1985");
+  }
+
+}
--- a/scm-webapp/src/test/java/sonia/scm/repository/CustomNamespaceStrategyTest.java
+++ b/scm-webapp/src/test/java/sonia/scm/repository/CustomNamespaceStrategyTest.java
@@ -0,0 +1,28 @@
+package sonia.scm.repository;
+
+import org.junit.jupiter.api.Test;
+import sonia.scm.ScmConstraintViolationException;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+class CustomNamespaceStrategyTest {
+
+  private final NamespaceStrategy namespaceStrategy = new CustomNamespaceStrategy();
+
+  @Test
+  void shouldReturnNamespaceFromRepository() {
+    Repository heartOfGold = RepositoryTestData.createHeartOfGold();
+    assertThat(namespaceStrategy.createNamespace(heartOfGold)).isEqualTo(RepositoryTestData.NAMESPACE);
+  }
+
+  @Test
+  void shouldThrowAnValidationExceptionForAnInvalidNamespace() {
+    Repository repository = new Repository();
+    repository.setNamespace("..");
+    repository.setName(".");
+
+    assertThrows(ScmConstraintViolationException.class, () -> namespaceStrategy.createNamespace(repository));
+  }
+
+}
--- a/scm-webapp/src/test/java/sonia/scm/repository/DefaultNamespaceStrategyTest.java
+++ b/scm-webapp/src/test/java/sonia/scm/repository/DefaultNamespaceStrategyTest.java
@@ -1,32 +0,0 @@
-package sonia.scm.repository;
-
-import com.github.sdorra.shiro.ShiroRule;
-import com.github.sdorra.shiro.SubjectAware;
-import org.junit.Rule;
-import org.junit.Test;
-
-import static org.junit.Assert.*;
-
-@SubjectAware(configuration = "classpath:sonia/scm/shiro-001.ini")
-public class DefaultNamespaceStrategyTest {
-
-  @Rule
-  public ShiroRule shiroRule = new ShiroRule();
-
-  private DefaultNamespaceStrategy namespaceStrategy = new DefaultNamespaceStrategy();
-
-  @Test
-  @SubjectAware(username = "trillian", password = "secret")
-  public void testNamespaceStrategyWithoutPreset() {
-    assertEquals("trillian", namespaceStrategy.createNamespace(new Repository()));
-  }
-
-  @Test
-  @SubjectAware(username = "trillian", password = "secret")
-  public void testNamespaceStrategyWithPreset() {
-    Repository repository = new Repository();
-    repository.setNamespace("awesome");
-    assertEquals("awesome", namespaceStrategy.createNamespace(repository));
-  }
-
-}
--- a/scm-webapp/src/test/java/sonia/scm/repository/DefaultRepositoryManagerPerfTest.java
+++ b/scm-webapp/src/test/java/sonia/scm/repository/DefaultRepositoryManagerPerfTest.java
@@ -34,6 +34,7 @@ import com.google.common.base.Stopwatch;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Sets;
 import com.google.inject.Provider;
+import com.google.inject.util.Providers;
 import org.apache.shiro.SecurityUtils;
 import org.apache.shiro.authc.AuthenticationException;
 import org.apache.shiro.authc.AuthenticationInfo;
@@ -118,7 +119,7 @@ public class DefaultRepositoryManagerPerfTest {
      keyGenerator, 
      repositoryDAO,
      handlerSet,
-      namespaceStrategy
+      Providers.of(namespaceStrategy)
    );
    
    setUpTestRepositories();
--- a/scm-webapp/src/test/java/sonia/scm/repository/DefaultRepositoryManagerTest.java
+++ b/scm-webapp/src/test/java/sonia/scm/repository/DefaultRepositoryManagerTest.java
@@ -37,6 +37,7 @@ import com.github.sdorra.shiro.ShiroRule;
 import com.github.sdorra.shiro.SubjectAware;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Sets;
+import com.google.inject.util.Providers;
 import org.apache.shiro.authz.UnauthorizedException;
 import org.apache.shiro.util.ThreadContext;
 import org.junit.Before;
@@ -436,7 +437,7 @@ public class DefaultRepositoryManagerTest extends ManagerTestBase<Repository> {
    when(namespaceStrategy.createNamespace(Mockito.any(Repository.class))).thenAnswer(invocation -> mockedNamespace);

    return new DefaultRepositoryManager(configuration, contextProvider,
-      keyGenerator, repositoryDAO, handlerSet, namespaceStrategy);
+      keyGenerator, repositoryDAO, handlerSet, Providers.of(namespaceStrategy));
  }

  private void createRepository(RepositoryManager m, Repository repository) {
--- a/scm-webapp/src/test/java/sonia/scm/repository/NamespaceStrategyProviderTest.java
+++ b/scm-webapp/src/test/java/sonia/scm/repository/NamespaceStrategyProviderTest.java
@@ -0,0 +1,69 @@
+package sonia.scm.repository;
+
+import org.junit.jupiter.api.Test;
+import sonia.scm.config.ScmConfiguration;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.LinkedHashSet;
+import java.util.Set;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class NamespaceStrategyProviderTest {
+
+  @Test
+  void shouldReturnConfiguredStrategy() {
+    Set<NamespaceStrategy> strategies = allStrategiesAsSet();
+
+    ScmConfiguration configuration = new ScmConfiguration();
+    configuration.setNamespaceStrategy("Arthur");
+
+    NamespaceStrategyProvider provider = new NamespaceStrategyProvider(strategies, configuration);
+    NamespaceStrategy strategy = provider.get();
+
+    assertThat(strategy).isInstanceOf(Arthur.class);
+  }
+
+  @Test
+  void shouldReturnUsernameStrategyForUnknown() {
+    Set<NamespaceStrategy> strategies = Collections.emptySet();
+
+    ScmConfiguration configuration = new ScmConfiguration();
+    configuration.setNamespaceStrategy("Arthur");
+
+    NamespaceStrategyProvider provider = new NamespaceStrategyProvider(strategies, configuration);
+    NamespaceStrategy strategy = provider.get();
+
+    assertThat(strategy).isInstanceOf(UsernameNamespaceStrategy.class);
+  }
+
+  private LinkedHashSet<NamespaceStrategy> allStrategiesAsSet() {
+    return new LinkedHashSet<>(Arrays.asList(new Trillian(), new Zaphod(), new Arthur()));
+  }
+
+  private static class Trillian implements NamespaceStrategy{
+
+    @Override
+    public String createNamespace(Repository repository) {
+      return "trillian";
+    }
+  }
+
+  private static class Zaphod implements NamespaceStrategy {
+
+    @Override
+    public String createNamespace(Repository repository) {
+      return "zaphod";
+    }
+  }
+
+  private static class Arthur implements NamespaceStrategy {
+
+    @Override
+    public String createNamespace(Repository repository) {
+      return "arthur";
+    }
+  }
+
+}
--- a/scm-webapp/src/test/java/sonia/scm/repository/NamespaceStrategyValidatorTest.java
+++ b/scm-webapp/src/test/java/sonia/scm/repository/NamespaceStrategyValidatorTest.java
@@ -0,0 +1,33 @@
+package sonia.scm.repository;
+
+import com.google.common.collect.Sets;
+import org.junit.jupiter.api.Test;
+import sonia.scm.ScmConstraintViolationException;
+
+import java.util.Collections;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class NamespaceStrategyValidatorTest {
+
+  @Test
+  void shouldThrowConstraintValidationException() {
+    NamespaceStrategyValidator validator = new NamespaceStrategyValidator(Collections.emptySet());
+    assertThrows(ScmConstraintViolationException.class, () -> validator.check("AwesomeStrategy"));
+  }
+
+  @Test
+  void shouldDoNotThrowAnException() {
+    NamespaceStrategyValidator validator = new NamespaceStrategyValidator(Sets.newHashSet(new AwesomeStrategy()));
+    validator.check("AwesomeStrategy");
+  }
+
+  public static class AwesomeStrategy implements NamespaceStrategy {
+
+    @Override
+    public String createNamespace(Repository repository) {
+      return null;
+    }
+  }
+
+}
--- a/scm-webapp/src/test/java/sonia/scm/repository/RepositoryTypeNamespaceStrategyTest.java
+++ b/scm-webapp/src/test/java/sonia/scm/repository/RepositoryTypeNamespaceStrategyTest.java
@@ -0,0 +1,20 @@
+package sonia.scm.repository;
+
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class RepositoryTypeNamespaceStrategyTest {
+
+  private final RepositoryTypeNamespaceStrategy namespaceStrategy = new RepositoryTypeNamespaceStrategy();
+
+  @Test
+  void shouldReturnTypeOfRepository() {
+    Repository git = RepositoryTestData.create42Puzzle("git");
+    assertThat(namespaceStrategy.createNamespace(git)).isEqualTo("git");
+
+    Repository hg = RepositoryTestData.create42Puzzle("hg");
+    assertThat(namespaceStrategy.createNamespace(hg)).isEqualTo("hg");
+  }
+
+}
--- a/scm-webapp/src/test/java/sonia/scm/repository/UsernameNamespaceStrategyTest.java
+++ b/scm-webapp/src/test/java/sonia/scm/repository/UsernameNamespaceStrategyTest.java
@@ -0,0 +1,42 @@
+package sonia.scm.repository;
+
+
+import org.apache.shiro.subject.Subject;
+import org.apache.shiro.util.ThreadContext;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.when;
+
+@ExtendWith(MockitoExtension.class)
+class UsernameNamespaceStrategyTest {
+
+  @Mock
+  private Subject subject;
+
+  private final NamespaceStrategy usernameNamespaceStrategy = new UsernameNamespaceStrategy();
+
+  @BeforeEach
+  void setupSubject() {
+    ThreadContext.bind(subject);
+  }
+
+  @AfterEach
+  void clearThreadContext() {
+    ThreadContext.unbindSubject();
+  }
+
+  @Test
+  void shouldReturnPrimaryPrincipal() {
+    when(subject.getPrincipal()).thenReturn("trillian");
+
+    String namespace = usernameNamespaceStrategy.createNamespace(RepositoryTestData.createHeartOfGold());
+    assertThat(namespace).isEqualTo("trillian");
+  }
+
+}