Merge changes from topic 'events'

* changes:
  Update replication plugin
  Add EventDispatcher interface and use it.

gerrit-server/src/main/java/com/google/gerrit/common/ChangeHookRunner.java

@@ -86,8 +86,8 @@ import java.util.concurrent.TimeoutException;
 
 /** Spawns local executables when a hook action occurs. */
 @Singleton
-public class ChangeHookRunner implements ChangeHooks, EventSource,
-  LifecycleListener {
+public class ChangeHookRunner implements ChangeHooks, EventDispatcher,
+  EventSource, LifecycleListener {
     /** A logger for this class. */
     private static final Logger log = LoggerFactory.getLogger(ChangeHookRunner.class);
 
@@ -96,6 +96,7 @@ public class ChangeHookRunner implements ChangeHooks, EventSource,
       protected void configure() {
         bind(ChangeHookRunner.class);
         bind(ChangeHooks.class).to(ChangeHookRunner.class);
+        bind(EventDispatcher.class).to(ChangeHookRunner.class);
         bind(EventSource.class).to(ChangeHookRunner.class);
         listener().to(ChangeHookRunner.class);
       }

gerrit-server/src/main/java/com/google/gerrit/common/ChangeHooks.java

@@ -22,7 +22,6 @@ import com.google.gerrit.reviewdb.client.Change;
 import com.google.gerrit.reviewdb.client.PatchSet;
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.reviewdb.server.ReviewDb;
-import com.google.gerrit.server.events.Event;
 import com.google.gwtorm.server.OrmException;
 
 import org.eclipse.jgit.lib.ObjectId;
@@ -182,23 +181,4 @@ public interface ChangeHooks {
   public void doHashtagsChangedHook(Change change, Account account,
       Set<String>added, Set<String> removed, Set<String> hashtags,
       ReviewDb db) throws OrmException;
-
-  /**
-   * Post a stream event that is related to a change
-   *
-   * @param change The change that the event is related to
-   * @param event The event to post
-   * @param db The database
-   * @throws OrmException
-   */
-  public void postEvent(Change change, Event event, ReviewDb db)
-      throws OrmException;
-
-  /**
-   * Post a stream event that is related to a branch
-   *
-   * @param branchName The branch that the event is related to
-   * @param event The event to post
-   */
-  public void postEvent(Branch.NameKey branchName, Event event);
 }

gerrit-server/src/main/java/com/google/gerrit/common/DisabledChangeHooks.java

@@ -32,7 +32,8 @@ import java.util.Map;
 import java.util.Set;
 
 /** Does not invoke hooks. */
-public final class DisabledChangeHooks implements ChangeHooks, EventSource {
+public final class DisabledChangeHooks implements ChangeHooks, EventDispatcher,
+    EventSource {
   @Override
   public void addEventListener(EventListener listener, CurrentUser user) {
   }

gerrit-server/src/main/java/com/google/gerrit/common/EventDispatcher.java

@@ -0,0 +1,44 @@
+// Copyright (C) 2015 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.
+
+package com.google.gerrit.common;
+
+import com.google.gerrit.reviewdb.client.Branch;
+import com.google.gerrit.reviewdb.client.Change;
+import com.google.gerrit.reviewdb.server.ReviewDb;
+import com.google.gerrit.server.events.Event;
+import com.google.gwtorm.server.OrmException;
+
+
+/** Interface for posting (dispatching) Events */
+public interface EventDispatcher {
+  /**
+   * Post a stream event that is related to a change
+   *
+   * @param change The change that the event is related to
+   * @param event The event to post
+   * @param db The database
+   * @throws OrmException
+   */
+  public void postEvent(Change change, Event event, ReviewDb db)
+      throws OrmException;
+
+  /**
+   * Post a stream event that is related to a branch
+   *
+   * @param branchName The branch that the event is related to
+   * @param event The event to post
+   */
+  public void postEvent(Branch.NameKey branchName, Event event);
+}