Move Ehcache bindings into their own component

This way we can chose to build at least part of the server without
Ehcache, now that we have abstracted away the cache binding with
the CachePool interface.

Change-Id: I0a629eba3b83c6438ee371ac04f44e2d13218b4d
Signed-off-by: Shawn O. Pearce <sop@google.com>

gerrit-ehcache/.gitignore

@@ -0,0 +1,4 @@
+/target
+/.classpath
+/.project
+/.settings/org.maven.ide.eclipse.prefs

gerrit-ehcache/.settings/org.eclipse.core.resources.prefs

@@ -0,0 +1,3 @@
+#Tue Sep 02 16:59:24 PDT 2008
+eclipse.preferences.version=1
+encoding/<project>=UTF-8

gerrit-ehcache/.settings/org.eclipse.core.runtime.prefs

@@ -0,0 +1,3 @@
+#Tue Sep 02 16:59:24 PDT 2008
+eclipse.preferences.version=1
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gerrit-ehcache/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,269 @@
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+org.eclipse.jdt.core.formatter.never_indent_line_comments_on_first_column=false
+org.eclipse.jdt.core.formatter.number_of_blank_lines_at_beginning_of_method_body=0
+org.eclipse.jdt.core.formatter.number_of_empty_lines_to_preserve=3
+org.eclipse.jdt.core.formatter.put_empty_statement_on_new_line=false
+org.eclipse.jdt.core.formatter.tabulation.char=space
+org.eclipse.jdt.core.formatter.tabulation.size=2
+org.eclipse.jdt.core.formatter.use_tabs_only_for_leading_indentations=false
+org.eclipse.jdt.core.formatter.wrap_before_binary_operator=true

gerrit-ehcache/.settings/org.eclipse.jdt.ui.prefs

@@ -0,0 +1,61 @@
+#Wed Jul 29 11:31:38 PDT 2009
+eclipse.preferences.version=1
+editor_save_participant_org.eclipse.jdt.ui.postsavelistener.cleanup=true
+formatter_profile=_Google Format
+formatter_settings_version=11
+org.eclipse.jdt.ui.ignorelowercasenames=true
+org.eclipse.jdt.ui.importorder=com.google;com;junit;net;org;java;javax;
+org.eclipse.jdt.ui.ondemandthreshold=99
+org.eclipse.jdt.ui.staticondemandthreshold=99
+org.eclipse.jdt.ui.text.custom_code_templates=<?xml version\="1.0" encoding\="UTF-8" standalone\="no"?><templates/>
+sp_cleanup.add_default_serial_version_id=true
+sp_cleanup.add_generated_serial_version_id=false
+sp_cleanup.add_missing_annotations=false
+sp_cleanup.add_missing_deprecated_annotations=true
+sp_cleanup.add_missing_methods=false
+sp_cleanup.add_missing_nls_tags=false
+sp_cleanup.add_missing_override_annotations=true
+sp_cleanup.add_serial_version_id=false
+sp_cleanup.always_use_blocks=true
+sp_cleanup.always_use_parentheses_in_expressions=false
+sp_cleanup.always_use_this_for_non_static_field_access=false
+sp_cleanup.always_use_this_for_non_static_method_access=false
+sp_cleanup.convert_to_enhanced_for_loop=false
+sp_cleanup.correct_indentation=false
+sp_cleanup.format_source_code=false
+sp_cleanup.format_source_code_changes_only=false
+sp_cleanup.make_local_variable_final=true
+sp_cleanup.make_parameters_final=true
+sp_cleanup.make_private_fields_final=true
+sp_cleanup.make_type_abstract_if_missing_method=false
+sp_cleanup.make_variable_declarations_final=false
+sp_cleanup.never_use_blocks=false
+sp_cleanup.never_use_parentheses_in_expressions=true
+sp_cleanup.on_save_use_additional_actions=true
+sp_cleanup.organize_imports=false
+sp_cleanup.qualify_static_field_accesses_with_declaring_class=false
+sp_cleanup.qualify_static_member_accesses_through_instances_with_declaring_class=true
+sp_cleanup.qualify_static_member_accesses_through_subtypes_with_declaring_class=true
+sp_cleanup.qualify_static_member_accesses_with_declaring_class=false
+sp_cleanup.qualify_static_method_accesses_with_declaring_class=false
+sp_cleanup.remove_private_constructors=true
+sp_cleanup.remove_trailing_whitespaces=true
+sp_cleanup.remove_trailing_whitespaces_all=true
+sp_cleanup.remove_trailing_whitespaces_ignore_empty=false
+sp_cleanup.remove_unnecessary_casts=false
+sp_cleanup.remove_unnecessary_nls_tags=false
+sp_cleanup.remove_unused_imports=false
+sp_cleanup.remove_unused_local_variables=false
+sp_cleanup.remove_unused_private_fields=true
+sp_cleanup.remove_unused_private_members=false
+sp_cleanup.remove_unused_private_methods=true
+sp_cleanup.remove_unused_private_types=true
+sp_cleanup.sort_members=false
+sp_cleanup.sort_members_all=false
+sp_cleanup.use_blocks=false
+sp_cleanup.use_blocks_only_for_return_and_throw=false
+sp_cleanup.use_parentheses_in_expressions=false
+sp_cleanup.use_this_for_non_static_field_access=false
+sp_cleanup.use_this_for_non_static_field_access_only_if_necessary=true
+sp_cleanup.use_this_for_non_static_method_access=false
+sp_cleanup.use_this_for_non_static_method_access_only_if_necessary=true

gerrit-ehcache/pom.xml

@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+Copyright (C) 2010 The Android Open Source Project
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>com.google.gerrit</groupId>
+    <artifactId>gerrit-parent</artifactId>
+    <version>2.2-SNAPSHOT</version>
+  </parent>
+
+  <artifactId>gerrit-ehcache</artifactId>
+  <name>Gerrit Code Review - Ehcache Bindings</name>
+
+  <description>
+    Bindings to Ehcache
+  </description>
+
+  <dependencies>
+    <dependency>
+      <groupId>net.sf.ehcache</groupId>
+      <artifactId>ehcache-core</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>com.google.gerrit</groupId>
+      <artifactId>gerrit-server</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+  </dependencies>
+</project>

gerrit-ehcache/src/main/java/com/google/gerrit/ehcache/EhcachePoolImpl.java

@@ -12,13 +12,19 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package com.google.gerrit.server.cache;
+package com.google.gerrit.ehcache;
 
 import static java.util.concurrent.TimeUnit.MINUTES;
 import static java.util.concurrent.TimeUnit.SECONDS;
 
 import com.google.gerrit.lifecycle.LifecycleListener;
 import com.google.gerrit.lifecycle.LifecycleModule;
+import com.google.gerrit.server.cache.CacheModule;
+import com.google.gerrit.server.cache.CachePool;
+import com.google.gerrit.server.cache.CacheProvider;
+import com.google.gerrit.server.cache.EntryCreator;
+import com.google.gerrit.server.cache.EvictionPolicy;
+import com.google.gerrit.server.cache.ProxyCache;
 import com.google.gerrit.server.config.ConfigUtil;
 import com.google.gerrit.server.config.GerritServerConfig;
 import com.google.gerrit.server.config.SitePaths;

gerrit-ehcache/src/main/java/com/google/gerrit/ehcache/PopulatingCache.java

@@ -12,10 +12,13 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package com.google.gerrit.server.cache;
+package com.google.gerrit.ehcache;
 
 import static java.util.concurrent.TimeUnit.SECONDS;
 
+import com.google.gerrit.server.cache.Cache;
+import com.google.gerrit.server.cache.EntryCreator;
+
 import net.sf.ehcache.CacheException;
 import net.sf.ehcache.Ehcache;
 import net.sf.ehcache.Element;

gerrit-ehcache/src/main/java/com/google/gerrit/ehcache/SimpleCache.java

@@ -12,10 +12,12 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package com.google.gerrit.server.cache;
+package com.google.gerrit.ehcache;
 
 import static java.util.concurrent.TimeUnit.SECONDS;
 
+import com.google.gerrit.server.cache.Cache;
+
 import net.sf.ehcache.CacheException;
 import net.sf.ehcache.Ehcache;
 import net.sf.ehcache.Element;

gerrit-pgm/src/main/java/com/google/gerrit/pgm/Daemon.java

@@ -17,6 +17,7 @@ package com.google.gerrit.pgm;
 import static com.google.gerrit.server.schema.DataSourceProvider.Context.MULTI_USER;
 
 import com.google.gerrit.common.ChangeHookRunner;
+import com.google.gerrit.ehcache.EhcachePoolImpl;
 import com.google.gerrit.httpd.CacheBasedWebSession;
 import com.google.gerrit.httpd.GitOverHttpModule;
 import com.google.gerrit.httpd.HttpCanonicalWebUrlProvider;
@@ -32,7 +33,6 @@ import com.google.gerrit.pgm.util.LogFileCompressor;
 import com.google.gerrit.pgm.util.RuntimeShutdown;
 import com.google.gerrit.pgm.util.SiteProgram;
 import com.google.gerrit.reviewdb.AuthType;
-import com.google.gerrit.server.cache.EhcachePoolImpl;
 import com.google.gerrit.server.config.AuthConfig;
 import com.google.gerrit.server.config.AuthConfigModule;
 import com.google.gerrit.server.config.CanonicalWebUrlModule;

gerrit-pgm/src/main/java/com/google/gerrit/pgm/ExportReviewNotes.java

@@ -17,6 +17,7 @@ package com.google.gerrit.pgm;
 import static com.google.gerrit.server.schema.DataSourceProvider.Context.MULTI_USER;
 
 import com.google.gerrit.common.data.ApprovalTypes;
+import com.google.gerrit.ehcache.EhcachePoolImpl;
 import com.google.gerrit.lifecycle.LifecycleManager;
 import com.google.gerrit.lifecycle.LifecycleModule;
 import com.google.gerrit.pgm.util.SiteProgram;
@@ -27,7 +28,6 @@ import com.google.gerrit.reviewdb.ReviewDb;
 import com.google.gerrit.server.account.AccountCacheImpl;
 import com.google.gerrit.server.account.GroupCacheImpl;
 import com.google.gerrit.server.cache.CachePool;
-import com.google.gerrit.server.cache.EhcachePoolImpl;
 import com.google.gerrit.server.config.ApprovalTypesProvider;
 import com.google.gerrit.server.config.CanonicalWebUrl;
 import com.google.gerrit.server.config.CanonicalWebUrlProvider;

gerrit-server/pom.xml

@@ -53,11 +53,6 @@ limitations under the License.
       <artifactId>org.eclipse.jgit.junit</artifactId>
     </dependency>
 
-    <dependency>
-      <groupId>net.sf.ehcache</groupId>
-      <artifactId>ehcache-core</artifactId>
-    </dependency>
-
     <dependency>
       <groupId>commons-dbcp</groupId>
       <artifactId>commons-dbcp</artifactId>

gerrit-sshd/pom.xml

@@ -64,5 +64,11 @@ limitations under the License.
       <artifactId>gerrit-server</artifactId>
       <version>${project.version}</version>
     </dependency>
+
+    <dependency>
+      <groupId>com.google.gerrit</groupId>
+      <artifactId>gerrit-ehcache</artifactId>
+      <version>${project.version}</version>
+    </dependency>
   </dependencies>
 </project>

gerrit-sshd/src/main/java/com/google/gerrit/sshd/commands/CacheCommand.java

@@ -14,7 +14,7 @@
 
 package com.google.gerrit.sshd.commands;
 
-import com.google.gerrit.server.cache.EhcachePoolImpl;
+import com.google.gerrit.ehcache.EhcachePoolImpl;
 import com.google.gerrit.sshd.BaseCommand;
 import com.google.inject.Inject;
 

gerrit-war/src/main/java/com/google/gerrit/httpd/WebAppInitializer.java

@@ -18,11 +18,11 @@ import static com.google.inject.Scopes.SINGLETON;
 import static com.google.inject.Stage.PRODUCTION;
 
 import com.google.gerrit.common.ChangeHookRunner;
+import com.google.gerrit.ehcache.EhcachePoolImpl;
 import com.google.gerrit.httpd.auth.openid.OpenIdModule;
 import com.google.gerrit.lifecycle.LifecycleManager;
 import com.google.gerrit.lifecycle.LifecycleModule;
 import com.google.gerrit.reviewdb.AuthType;
-import com.google.gerrit.server.cache.EhcachePoolImpl;
 import com.google.gerrit.server.config.AuthConfig;
 import com.google.gerrit.server.config.AuthConfigModule;
 import com.google.gerrit.server.config.CanonicalWebUrlModule;

pom.xml

@@ -74,6 +74,7 @@ limitations under the License.
 
     <module>gerrit-antlr</module>
     <module>gerrit-common</module>
+    <module>gerrit-ehcache</module>
     <module>gerrit-httpd</module>
     <module>gerrit-launcher</module>
     <module>gerrit-main</module>