improve configuration for guava cache

scm-webapp/src/main/java/sonia/scm/cache/CacheConfigurationReader.java

@@ -64,14 +64,14 @@ public class CacheConfigurationReader
 {
 
   /** Field description */
-  private static final String DEFAULT = "/config/cache.xml";
+  private static final String DEFAULT = "/config/gcache.xml";
 
   /** Field description */
   private static final String MANUAL_RESOURCE =
-    "ext".concat(File.separator).concat("cache.xml");
+    "ext".concat(File.separator).concat("gcache.xml");
 
   /** Field description */
-  private static final String MODULE_RESOURCES = "/META-INF/scm/cache.xml";
+  private static final String MODULE_RESOURCES = "/META-INF/scm/gcache.xml";
 
   /**
    * the logger for CacheConfigurationReader

scm-webapp/src/main/java/sonia/scm/cache/CacheConfigurations.java

@@ -51,7 +51,7 @@ import java.util.Iterator;
  *
  * @author Sebastian Sdorra
  */
-public class CacheConfigurations
+public final class CacheConfigurations
 {
 
   /**
@@ -61,7 +61,12 @@ public class CacheConfigurations
     LoggerFactory.getLogger(CacheConfigurations.class);
 
   //~--- methods --------------------------------------------------------------
+  private CacheConfigurations()
+  {
+  }
 
+  
+  
   /**
    * Method description
    *

scm-webapp/src/main/java/sonia/scm/cache/GuavaCache.java

@@ -33,7 +33,7 @@ package sonia.scm.cache;
 
 //~--- non-JDK imports --------------------------------------------------------
 
-import com.google.common.cache.CacheBuilder;
+import com.google.common.annotations.VisibleForTesting;
 import com.google.common.collect.Sets;
 
 import org.slf4j.Logger;
@@ -44,7 +44,6 @@ import sonia.scm.Filter;
 //~--- JDK imports ------------------------------------------------------------
 
 import java.util.Set;
-import java.util.concurrent.TimeUnit;
 
 /**
  *
@@ -84,72 +83,28 @@ public class GuavaCache<K, V> implements Cache<K, V>
    */
   public GuavaCache(CacheConfiguration configuration, String name)
   {
+    this(GuavaCaches.create(configuration, name),
+      configuration.getCopyStrategy(), name);
+  }
+
+  /**
+   * Constructs ...
+   *
+   *
+   * @param cache
+   * @param copyStrategy
+   * @param name
+   */
+  @VisibleForTesting
+  protected GuavaCache(com.google.common.cache.Cache<K, V> cache,
+    CopyStrategy copyStrategy, String name)
+  {
+    this.cache = cache;
     this.name = name;
 
-    if (configuration.getCopyStrategy() != null)
+    if (copyStrategy != null)
     {
-      copyStrategy = configuration.getCopyStrategy();
-    }
-
-    CacheBuilder<Object, Object> builder = CacheBuilder.newBuilder();
-
-    if (configuration.getConcurrencyLevel() != null)
-    {
-      builder.concurrencyLevel(configuration.getConcurrencyLevel());
-    }
-
-    if (configuration.getExpireAfterAccess() != null)
-    {
-      builder.expireAfterAccess(configuration.getExpireAfterAccess(),
-        TimeUnit.MILLISECONDS);
-    }
-
-    if (configuration.getExpireAfterWrite() != null)
-    {
-      builder.expireAfterWrite(configuration.getExpireAfterWrite(),
-        TimeUnit.MILLISECONDS);
-    }
-
-    if (configuration.getInitialCapacity() != null)
-    {
-      builder.initialCapacity(configuration.getInitialCapacity());
-    }
-
-    if (configuration.getMaximumSize() != null)
-    {
-      builder.maximumSize(configuration.getMaximumSize());
-    }
-
-    if (configuration.getMaximumWeight() != null)
-    {
-      builder.maximumWeight(configuration.getMaximumWeight());
-    }
-
-    if (isEnabled(configuration.getRecordStats()))
-    {
-      builder.recordStats();
-    }
-
-    if (isEnabled(configuration.getSoftValues()))
-    {
-      builder.softValues();
-    }
-
-    if (isEnabled(configuration.getWeakKeys()))
-    {
-      builder.weakKeys();
-    }
-
-    if (isEnabled(configuration.getWeakValues()))
-    {
-      builder.weakKeys();
-    }
-
-    cache = builder.build();
-
-    if (logger.isTraceEnabled())
-    {
-      logger.trace("create new guava cache from builder: {}", builder);
+      this.copyStrategy = copyStrategy;
     }
   }
 
@@ -268,19 +223,6 @@ public class GuavaCache<K, V> implements Cache<K, V>
     return value;
   }
 
-  /**
-   * Method description
-   *
-   *
-   * @param v
-   *
-   * @return
-   */
-  private boolean isEnabled(Boolean v)
-  {
-    return (v != null) && v;
-  }
-
   //~--- fields ---------------------------------------------------------------
 
   /** Field description */

scm-webapp/src/main/java/sonia/scm/cache/GuavaCacheManager.java

@@ -34,6 +34,7 @@ package sonia.scm.cache;
 //~--- non-JDK imports --------------------------------------------------------
 
 import com.google.common.collect.Maps;
+import com.google.inject.Singleton;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -48,6 +49,7 @@ import java.util.Map;
  *
  * @author Sebastian Sdorra
  */
+@Singleton
 public class GuavaCacheManager implements CacheManager
 {
 
@@ -57,6 +59,25 @@ public class GuavaCacheManager implements CacheManager
   private static final Logger logger =
     LoggerFactory.getLogger(GuavaCacheManager.class);
 
+  //~--- constructors ---------------------------------------------------------
+
+  /**
+   * Constructs ...
+   *
+   */
+  public GuavaCacheManager()
+  {
+    CacheConfigurationReader reader = new CacheConfigurationReader();
+    CacheManagerConfiguration config = reader.read();
+
+    defaultConfiguration = config.getDefaultCache();
+
+    for (NamedCacheConfiguration ncc : config.getCaches())
+    {
+      cacheMap.put(ncc.getName(), new GuavaCache(ncc));
+    }
+  }
+
   //~--- methods --------------------------------------------------------------
 
   /**
@@ -105,7 +126,7 @@ public class GuavaCacheManager implements CacheManager
       logger.debug(
         "cache {} does not exists, creating a new instance from default configuration: {}",
         name, defaultConfiguration);
-      cache = new GuavaCache<K, V>(defaultConfiguration);
+      cache = new GuavaCache<K, V>(defaultConfiguration, name);
       cacheMap.put(name, cache);
     }
 
@@ -118,5 +139,5 @@ public class GuavaCacheManager implements CacheManager
   private Map<String, GuavaCache> cacheMap = Maps.newConcurrentMap();
 
   /** Field description */
-  private NamedCacheConfiguration defaultConfiguration;
+  private CacheConfiguration defaultConfiguration;
 }

scm-webapp/src/main/java/sonia/scm/cache/GuavaCaches.java

@@ -0,0 +1,156 @@
+/**
+ * Copyright (c) 2010, Sebastian Sdorra All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer. 2. Redistributions in
+ * binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other
+ * materials provided with the distribution. 3. Neither the name of SCM-Manager;
+ * nor the names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://bitbucket.org/sdorra/scm-manager
+ *
+ */
+
+
+
+package sonia.scm.cache;
+
+//~--- non-JDK imports --------------------------------------------------------
+
+import com.google.common.cache.CacheBuilder;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+//~--- JDK imports ------------------------------------------------------------
+
+import java.util.concurrent.TimeUnit;
+
+/**
+ *
+ * @author Sebastian Sdorra
+ */
+public final class GuavaCaches
+{
+
+  /**
+   * the logger for GuavaCaches
+   */
+  private static final Logger logger =
+    LoggerFactory.getLogger(GuavaCaches.class);
+
+  //~--- constructors ---------------------------------------------------------
+
+  /**
+   * Constructs ...
+   *
+   */
+  private GuavaCaches() {}
+
+  //~--- methods --------------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param configuration
+   * @param name
+   *
+   * @return
+   */
+  public static com.google.common.cache.Cache create(
+    CacheConfiguration configuration, String name)
+  {
+    CacheBuilder<Object, Object> builder = CacheBuilder.newBuilder();
+
+    if (configuration.getConcurrencyLevel() != null)
+    {
+      builder.concurrencyLevel(configuration.getConcurrencyLevel());
+    }
+
+    if (configuration.getExpireAfterAccess() != null)
+    {
+      builder.expireAfterAccess(configuration.getExpireAfterAccess(),
+        TimeUnit.SECONDS);
+    }
+
+    if (configuration.getExpireAfterWrite() != null)
+    {
+      builder.expireAfterWrite(configuration.getExpireAfterWrite(),
+        TimeUnit.SECONDS);
+    }
+
+    if (configuration.getInitialCapacity() != null)
+    {
+      builder.initialCapacity(configuration.getInitialCapacity());
+    }
+
+    if (configuration.getMaximumSize() != null)
+    {
+      builder.maximumSize(configuration.getMaximumSize());
+    }
+
+    if (configuration.getMaximumWeight() != null)
+    {
+      builder.maximumWeight(configuration.getMaximumWeight());
+    }
+
+    if (isEnabled(configuration.getRecordStats()))
+    {
+      builder.recordStats();
+    }
+
+    if (isEnabled(configuration.getSoftValues()))
+    {
+      builder.softValues();
+    }
+
+    if (isEnabled(configuration.getWeakKeys()))
+    {
+      builder.weakKeys();
+    }
+
+    if (isEnabled(configuration.getWeakValues()))
+    {
+      builder.weakKeys();
+    }
+
+    if (logger.isTraceEnabled())
+    {
+      logger.trace("create new cache {} from builder: {}", name, builder);
+    }
+
+    return builder.build();
+  }
+
+  //~--- get methods ----------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param v
+   *
+   * @return
+   */
+  private static boolean isEnabled(Boolean v)
+  {
+    return (v != null) && v;
+  }
+}