Export LifecycleListener in the extension API

Extensions may need to know when they are starting or stopping.
Export the interface that they can use to learn this information.

Change-Id: I45bb567aa76887844fbd82c8394ef117aa69c77c

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

@@ -17,7 +17,7 @@ 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.extensions.events.LifecycleListener;
 import com.google.gerrit.lifecycle.LifecycleModule;
 import com.google.gerrit.server.cache.CacheModule;
 import com.google.gerrit.server.cache.CachePool;

gerrit-extension-api/src/main/java/com/google/gerrit/extensions/events/LifecycleListener.java

@@ -12,11 +12,14 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package com.google.gerrit.lifecycle;
+package com.google.gerrit.extensions.events;
+
+import com.google.gerrit.extensions.annotations.ExtensionPoint;
 
 import java.util.EventListener;
 
 /** Listener interested in server startup and shutdown events. */
+@ExtensionPoint
 public interface LifecycleListener extends EventListener {
   /** Invoke when the server is starting. */
   public void start();

gerrit-pgm/src/main/java/com/google/gerrit/pgm/http/jetty/JettyServer.java

@@ -17,8 +17,8 @@ package com.google.gerrit.pgm.http.jetty;
 import static java.util.concurrent.TimeUnit.MILLISECONDS;
 import static java.util.concurrent.TimeUnit.SECONDS;
 
+import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.gerrit.launcher.GerritLauncher;
-import com.google.gerrit.lifecycle.LifecycleListener;
 import com.google.gerrit.reviewdb.client.AuthType;
 import com.google.gerrit.server.config.ConfigUtil;
 import com.google.gerrit.server.config.GerritServerConfig;

gerrit-pgm/src/main/java/com/google/gerrit/pgm/util/ErrorLogFile.java

@@ -14,7 +14,7 @@
 
 package com.google.gerrit.pgm.util;
 
-import com.google.gerrit.lifecycle.LifecycleListener;
+import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.gerrit.server.config.SitePaths;
 
 import org.apache.log4j.Appender;

gerrit-pgm/src/main/java/com/google/gerrit/pgm/util/LogFileCompressor.java

@@ -16,7 +16,7 @@ package com.google.gerrit.pgm.util;
 
 import static java.util.concurrent.TimeUnit.HOURS;
 
-import com.google.gerrit.lifecycle.LifecycleListener;
+import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.gerrit.lifecycle.LifecycleModule;
 import com.google.gerrit.server.config.SitePaths;
 import com.google.gerrit.server.git.WorkQueue;

gerrit-server/src/main/java/com/google/gerrit/lifecycle/LifecycleManager.java

@@ -16,6 +16,7 @@ package com.google.gerrit.lifecycle;
 
 import com.google.common.base.Preconditions;
 import com.google.common.collect.Lists;
+import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.gerrit.extensions.registration.RegistrationHandle;
 import com.google.inject.Binding;
 import com.google.inject.Injector;

gerrit-server/src/main/java/com/google/gerrit/lifecycle/LifecycleModule.java

@@ -1,5 +1,6 @@
 package com.google.gerrit.lifecycle;
 
+import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.inject.AbstractModule;
 import com.google.inject.Singleton;
 import com.google.inject.binder.LinkedBindingBuilder;

gerrit-server/src/main/java/com/google/gerrit/server/config/MasterNodeStartup.java

@@ -14,7 +14,7 @@
 
 package com.google.gerrit.server.config;
 
-import com.google.gerrit.lifecycle.LifecycleListener;
+import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.gerrit.lifecycle.LifecycleModule;
 import com.google.gerrit.server.git.PushAllProjectsOp;
 import com.google.gerrit.server.git.ReloadSubmitQueueOp;

gerrit-server/src/main/java/com/google/gerrit/server/git/LocalDiskRepositoryManager.java

@@ -14,7 +14,7 @@
 
 package com.google.gerrit.server.git;
 
-import com.google.gerrit.lifecycle.LifecycleListener;
+import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.gerrit.lifecycle.LifecycleModule;
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.server.config.GerritServerConfig;

gerrit-server/src/main/java/com/google/gerrit/server/git/WorkQueue.java

@@ -14,7 +14,7 @@
 
 package com.google.gerrit.server.git;
 
-import com.google.gerrit.lifecycle.LifecycleListener;
+import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.gerrit.lifecycle.LifecycleModule;
 import com.google.gerrit.reviewdb.client.Project.NameKey;
 import com.google.gerrit.server.util.IdGenerator;

gerrit-server/src/main/java/com/google/gerrit/server/plugins/PluginGuiceEnvironment.java

@@ -19,13 +19,13 @@ import com.google.common.collect.ListMultimap;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import com.google.common.collect.Sets;
+import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.gerrit.extensions.registration.DynamicMap;
 import com.google.gerrit.extensions.registration.DynamicSet;
 import com.google.gerrit.extensions.registration.PrivateInternals_DynamicMapImpl;
 import com.google.gerrit.extensions.registration.RegistrationHandle;
 import com.google.gerrit.extensions.registration.ReloadableRegistrationHandle;
 import com.google.gerrit.extensions.systemstatus.ServerInformation;
-import com.google.gerrit.lifecycle.LifecycleListener;
 import com.google.inject.AbstractModule;
 import com.google.inject.Binding;
 import com.google.inject.Injector;

gerrit-server/src/main/java/com/google/gerrit/server/plugins/PluginLoader.java

@@ -19,8 +19,8 @@ import com.google.common.base.Strings;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import com.google.common.collect.Sets;
+import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.gerrit.extensions.systemstatus.ServerInformation;
-import com.google.gerrit.lifecycle.LifecycleListener;
 import com.google.gerrit.server.config.ConfigUtil;
 import com.google.gerrit.server.config.GerritServerConfig;
 import com.google.gerrit.server.config.SitePaths;

gerrit-server/src/main/java/com/google/gerrit/server/schema/DataSourceProvider.java

@@ -18,7 +18,7 @@ import static com.google.gerrit.server.config.ConfigUtil.getEnum;
 import static java.util.concurrent.TimeUnit.MILLISECONDS;
 import static java.util.concurrent.TimeUnit.SECONDS;
 
-import com.google.gerrit.lifecycle.LifecycleListener;
+import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.gerrit.server.config.ConfigUtil;
 import com.google.gerrit.server.config.GerritServerConfig;
 import com.google.gerrit.server.config.SitePaths;

gerrit-server/src/main/java/com/google/gerrit/server/schema/SchemaVersionCheck.java

@@ -14,7 +14,7 @@
 
 package com.google.gerrit.server.schema;
 
-import com.google.gerrit.lifecycle.LifecycleListener;
+import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.gerrit.lifecycle.LifecycleModule;
 import com.google.gerrit.reviewdb.client.CurrentSchemaVersion;
 import com.google.gerrit.reviewdb.server.ReviewDb;

gerrit-sshd/src/main/java/com/google/gerrit/sshd/SshDaemon.java

@@ -18,7 +18,7 @@ import static java.util.concurrent.TimeUnit.MILLISECONDS;
 import static java.util.concurrent.TimeUnit.SECONDS;
 
 import com.google.gerrit.common.Version;
-import com.google.gerrit.lifecycle.LifecycleListener;
+import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.gerrit.server.config.ConfigUtil;
 import com.google.gerrit.server.config.GerritServerConfig;
 import com.google.gerrit.server.ssh.SshInfo;

gerrit-sshd/src/main/java/com/google/gerrit/sshd/SshLog.java

@@ -14,7 +14,7 @@
 
 package com.google.gerrit.sshd;
 
-import com.google.gerrit.lifecycle.LifecycleListener;
+import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.PeerDaemonUser;

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

@@ -16,7 +16,7 @@ package com.google.gerrit.sshd.commands;
 
 import com.google.gerrit.common.Version;
 import com.google.gerrit.common.data.GlobalCapability;
-import com.google.gerrit.lifecycle.LifecycleListener;
+import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.gerrit.server.config.SitePath;
 import com.google.gerrit.server.git.WorkQueue;
 import com.google.gerrit.server.git.WorkQueue.Task;

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

@@ -14,7 +14,7 @@
 
 package com.google.gerrit.httpd;
 
-import com.google.gerrit.lifecycle.LifecycleListener;
+import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.inject.Provider;
 import com.google.inject.ProvisionException;
 import com.google.inject.Singleton;