Pull cacheinvalidations code directory into chromium repo.

third_party/cacheinvalidation/src/java/com/google/ipc/invalidation/external/client/SystemResourcesBuilder.java

Index: third_party/cacheinvalidation/src/java/com/google/ipc/invalidation/external/client/SystemResourcesBuilder.java
diff --git a/third_party/cacheinvalidation/src/java/com/google/ipc/invalidation/external/client/SystemResourcesBuilder.java b/third_party/cacheinvalidation/src/java/com/google/ipc/invalidation/external/client/SystemResourcesBuilder.java
new file mode 100644
index 0000000000000000000000000000000000000000..72aae74f4ed4c9b93054acb3f1ab0f33939d90b5
--- /dev/null
+++ b/third_party/cacheinvalidation/src/java/com/google/ipc/invalidation/external/client/SystemResourcesBuilder.java
@@ -0,0 +1,174 @@
+/*
+ * 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.external.client;
+
+import com.google.ipc.invalidation.external.client.SystemResources.Logger;
+import com.google.ipc.invalidation.external.client.SystemResources.NetworkChannel;
+import com.google.ipc.invalidation.external.client.SystemResources.Scheduler;
+import com.google.ipc.invalidation.external.client.SystemResources.Storage;
+import com.google.ipc.invalidation.ticl.BasicSystemResources;
+import com.google.ipc.invalidation.util.Preconditions;
+
+
+/**
+ * A builder to override some or all resource components in {@code SystemResources} . See
+ * discussion in {@code ResourceComponent} as well.
+ *
+ */
+
+  // The resources used for constructing the SystemResources in builder.
+public class SystemResourcesBuilder {
+  private Scheduler internalScheduler;
+  private Scheduler listenerScheduler;
+  private Logger logger;
+  private NetworkChannel network;
+  private Storage storage;
+  private String platform;
+
+  /** If the build method has been called on this builder. */
+  private boolean sealed;
+
+  /** See specs at {@code DefaultResourcesFactory.createDefaultResourcesBuilder}. */
+  public SystemResourcesBuilder(Logger logger, Scheduler internalScheduler,
+      Scheduler listenerScheduler, NetworkChannel network, Storage storage) {
+    this.logger = logger;
+    this.internalScheduler = internalScheduler;
+    this.listenerScheduler = listenerScheduler;
+    this.network = network;
+    this.storage = storage;
+  }
+
+  /** Returns a new builder that shares all the resources of {@code builder} but is not sealed. */
+  public SystemResourcesBuilder(SystemResourcesBuilder builder) {
+    this.logger = builder.logger;
+    this.internalScheduler = builder.internalScheduler;
+    this.listenerScheduler = builder.listenerScheduler;
+    this.network = builder.network;
+    this.storage = builder.storage;
+    this.sealed = false;
+  }
+
+  /** Returns the internal scheduler. */
+  public Scheduler getInternalScheduler() {
+    return internalScheduler;
+  }
+
+  /** Returns the listener scheduler. */
+  public Scheduler getListenerScheduler() {
+    return listenerScheduler;
+  }
+
+  /** Returns the network channel. */
+  public NetworkChannel getNetwork() {
+    return network;
+  }
+
+  /** Returns the logger. */
+  public Logger getLogger() {
+    return logger;
+  }
+
+  /** Returns the storage. */
+  public Storage getStorage() {
+    return storage;
+  }
+
+  /**
+   * Sets the scheduler for scheduling internal events to be {@code internalScheduler}.
+   * <p>
+   * REQUIRES: {@link #build} has not been called.
+   */
+  public SystemResourcesBuilder setInternalScheduler(Scheduler internalScheduler) {
+    Preconditions.checkState(!sealed, "Builder's build method has already been called");
+    this.internalScheduler = internalScheduler;
+    return this;
+  }
+
+  /**
+   * Sets the scheduler for scheduling listener events to be {@code listenerScheduler}.
+   * <p>
+   * REQUIRES: {@link #build} has not been called.
+   */
+  public SystemResourcesBuilder setListenerScheduler(Scheduler listenerScheduler) {
+    Preconditions.checkState(!sealed, "Builder's build method has already been called");
+    this.listenerScheduler = listenerScheduler;
+    return this;
+  }
+
+  /**
+   * Sets the logger to be {@code logger}.
+   * <p>
+   * REQUIRES: {@link #build} has not been called.
+   */
+  public SystemResourcesBuilder setLogger(Logger logger) {
+    Preconditions.checkState(!sealed, "Builder's build method has already been called");
+    this.logger = logger;
+    return this;
+  }
+
+  /**
+   * Sets the network channel for communicating with the server to be {@code network}.
+   * <p>
+   * REQUIRES: {@link #build} has not been called.
+   */
+  public SystemResourcesBuilder setNetwork(NetworkChannel network) {
+    Preconditions.checkState(!sealed, "Builder's build method has already been called");
+    this.network = network;
+    return this;
+  }
+
+  /**
+   * Sets the persistence layer to be {@code storage}.
+   * <p>
+   * REQUIRES: {@link #build} has not been called.
+   */
+  public SystemResourcesBuilder setStorage(Storage storage) {
+    Preconditions.checkState(!sealed, "Builder's build method has already been called");
+    this.storage = storage;
+    return this;
+  }
+
+  /**
+   * Sets the platform to be {@code platform}.
+   * <p>
+   * REQUIRES: {@link #build} has not been called.
+   */
+  public SystemResourcesBuilder setPlatform(String platform) {
+    Preconditions.checkState(!sealed, "Builder's build method has already been called");
+    this.platform = platform;
+    return this;
+  }
+
+  /**
+   * Builds the {@code SystemResources} object with the given resource components and returns it.
+   * <p>
+   * Caller must not call any mutation method (on this SystemResourcesBuilder) after
+   * {@code build} has been called (i.e., build and the set* methods)
+   */
+  public SystemResources build() {
+    Preconditions.checkState(!sealed, "Builder's build method has already been called");
+    seal();
+    return new BasicSystemResources(logger, internalScheduler, listenerScheduler, network, storage,
+        platform);
+  }
+
+  /** Seals the builder so that no mutation method can be called on this. */
+  protected void seal() {
+    Preconditions.checkState(!sealed, "Builder's already sealed");
+    sealed = true;
+  }
+}