Pull cacheinvalidations code directory into chromium repo.

third_party/cacheinvalidation/src/java/com/google/ipc/invalidation/ticl/CheckingInvalidationListener.java

Index: third_party/cacheinvalidation/src/java/com/google/ipc/invalidation/ticl/CheckingInvalidationListener.java
diff --git a/third_party/cacheinvalidation/src/java/com/google/ipc/invalidation/ticl/CheckingInvalidationListener.java b/third_party/cacheinvalidation/src/java/com/google/ipc/invalidation/ticl/CheckingInvalidationListener.java
new file mode 100644
index 0000000000000000000000000000000000000000..845037e28092b967a1204b39567ad51bda7e2ee2
--- /dev/null
+++ b/third_party/cacheinvalidation/src/java/com/google/ipc/invalidation/ticl/CheckingInvalidationListener.java
@@ -0,0 +1,178 @@
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * 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.ipc.invalidation.ticl;
+
+import static com.google.ipc.invalidation.external.client.SystemResources.Scheduler.NO_DELAY;
+
+import com.google.ipc.invalidation.external.client.InvalidationClient;
+import com.google.ipc.invalidation.external.client.InvalidationListener;
+import com.google.ipc.invalidation.external.client.SystemResources.Logger;
+import com.google.ipc.invalidation.external.client.SystemResources.Scheduler;
+import com.google.ipc.invalidation.external.client.types.AckHandle;
+import com.google.ipc.invalidation.external.client.types.ErrorInfo;
+import com.google.ipc.invalidation.external.client.types.Invalidation;
+import com.google.ipc.invalidation.external.client.types.ObjectId;
+import com.google.ipc.invalidation.ticl.Statistics.ListenerEventType;
+import com.google.ipc.invalidation.util.NamedRunnable;
+import com.google.ipc.invalidation.util.Preconditions;
+
+
+/**
+ * {@link InvalidationListener} wrapper that ensures that a delegate listener is called on the
+ * proper thread and calls the listener method on the listener thread.
+ *
+ */
+class CheckingInvalidationListener implements InvalidationListener {
+
+  /** The actual listener to which this listener delegates. */
+  private final InvalidationListener delegate;
+
+  /** The scheduler for scheduling internal events in the library. */
+  private final Scheduler internalScheduler;
+
+  /** The scheduler for scheduling events for the delegate. */
+  private final Scheduler listenerScheduler;
+
+  /** Statistics objects to track number of sent messages, etc. */
+  private Statistics statistics;
+
+  private final Logger logger;
+
+  CheckingInvalidationListener(InvalidationListener delegate, Scheduler internalScheduler,
+      Scheduler listenerScheduler, Logger logger) {
+    this.delegate = Preconditions.checkNotNull(delegate, "Delegate cannot be null");
+    this.internalScheduler = Preconditions.checkNotNull(internalScheduler,
+        "Internal scheduler cannot be null");
+    this.listenerScheduler = Preconditions.checkNotNull(listenerScheduler,
+        "Listener scheduler cannot be null");
+    this.logger = Preconditions.checkNotNull(logger, "Logger cannot be null");
+  }
+
+  void setStatistics(Statistics statistics) {
+    this.statistics = Preconditions.checkNotNull(statistics, "Statistics cannot be null");
+  }
+
+  @Override
+  public void invalidate(final InvalidationClient client, final Invalidation invalidation,
+      final AckHandle ackHandle) {
+    Preconditions.checkState(internalScheduler.isRunningOnThread(), "Not on internal thread");
+    Preconditions.checkNotNull(ackHandle);
+    listenerScheduler.schedule(NO_DELAY, new NamedRunnable("CheckingInvalListener.invalidate") {
+      @Override
+      public void run() {
+        statistics.recordListenerEvent(ListenerEventType.INVALIDATE);
+        delegate.invalidate(client, invalidation, ackHandle);
+      }
+    });
+  }
+
+  @Override
+  public void invalidateUnknownVersion(final InvalidationClient client, final ObjectId objectId,
+      final AckHandle ackHandle) {
+    Preconditions.checkState(internalScheduler.isRunningOnThread(), "Not on internal thread");
+    Preconditions.checkNotNull(ackHandle);
+    listenerScheduler.schedule(NO_DELAY,
+        new NamedRunnable("CheckingInvalListener.invalidateUnknownVersion") {
+      @Override
+      public void run() {
+        statistics.recordListenerEvent(ListenerEventType.INVALIDATE_UNKNOWN);
+        delegate.invalidateUnknownVersion(client, objectId, ackHandle);
+      }
+    });
+  }
+
+  @Override
+  public void invalidateAll(final InvalidationClient client, final AckHandle ackHandle) {
+    Preconditions.checkState(internalScheduler.isRunningOnThread(), "Not on internal thread");
+    Preconditions.checkNotNull(ackHandle);
+    listenerScheduler.schedule(NO_DELAY, new NamedRunnable("CheckingInvalListener.invalidateAll") {
+      @Override
+      public void run() {
+        statistics.recordListenerEvent(ListenerEventType.INVALIDATE_ALL);
+        delegate.invalidateAll(client, ackHandle);
+      }
+    });
+  }
+
+  @Override
+  public void informRegistrationFailure(final InvalidationClient client, final ObjectId objectId,
+      final boolean isTransient, final String errorMessage) {
+    Preconditions.checkState(internalScheduler.isRunningOnThread(), "Not on internal thread");
+    listenerScheduler.schedule(NO_DELAY, new NamedRunnable("CheckingInvalListener.regFailure") {
+      @Override
+      public void run() {
+        statistics.recordListenerEvent(ListenerEventType.INFORM_REGISTRATION_FAILURE);
+        delegate.informRegistrationFailure(client, objectId, isTransient, errorMessage);
+      }
+    });
+  }
+
+  @Override
+  public void informRegistrationStatus(final InvalidationClient client, final ObjectId objectId,
+      final RegistrationState regState) {
+    Preconditions.checkState(internalScheduler.isRunningOnThread(), "Not on internal thread");
+    listenerScheduler.schedule(NO_DELAY, new NamedRunnable("CheckingInvalListener.regStatus") {
+      @Override
+      public void run() {
+        statistics.recordListenerEvent(ListenerEventType.INFORM_REGISTRATION_STATUS);
+        delegate.informRegistrationStatus(client, objectId, regState);
+      }
+    });
+  }
+
+  @Override
+  public void reissueRegistrations(final InvalidationClient client, final byte[] prefix,
+      final int prefixLen) {
+    Preconditions.checkState(internalScheduler.isRunningOnThread(), "Not on internal thread");
+    listenerScheduler.schedule(NO_DELAY, new NamedRunnable("CheckingInvalListener.reissueRegs") {
+      @Override
+      public void run() {
+        statistics.recordListenerEvent(ListenerEventType.REISSUE_REGISTRATIONS);
+        delegate.reissueRegistrations(client, prefix, prefixLen);
+      }
+    });
+  }
+
+  @Override
+  public void informError(final InvalidationClient client, final ErrorInfo errorInfo) {
+    Preconditions.checkState(internalScheduler.isRunningOnThread(), "Not on internal thread");
+    listenerScheduler.schedule(NO_DELAY, new NamedRunnable("CheckingInvalListener.informError") {
+      @Override
+      public void run() {
+        statistics.recordListenerEvent(ListenerEventType.INFORM_ERROR);
+        delegate.informError(client, errorInfo);
+      }
+    });
+  }
+
+  /** Returns the delegate {@link InvalidationListener}. */
+  InvalidationListener getDelegate() {
+    return delegate;
+  }
+
+  @Override
+  public void ready(final InvalidationClient client) {
+    Preconditions.checkState(internalScheduler.isRunningOnThread(), "Not on internal thread");
+    listenerScheduler.schedule(NO_DELAY, new NamedRunnable("CheckingInvalListener.ready") {
+      @Override
+      public void run() {
+        logger.info("Informing app that ticl is ready");
+        delegate.ready(client);
+      }
+    });
+  }
+}