1 files changed, 81 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/remote/RemoteModule.java b/src/main/java/com/google/devtools/build/lib/remote/RemoteModule.java
new file mode 100644
index 0000000000..ebc1874362
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/remote/RemoteModule.java
@@ -0,0 +1,81 @@
+// Copyright 2016 The Bazel Authors. All rights reserved.
+//
+// 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.devtools.build.lib.remote;
+
+import com.google.common.collect.ImmutableList;
+import com.google.common.eventbus.Subscribe;
+import com.google.devtools.build.lib.actions.ActionContextProvider;
+import com.google.devtools.build.lib.buildtool.BuildRequest;
+import com.google.devtools.build.lib.buildtool.buildevent.BuildStartingEvent;
+import com.google.devtools.build.lib.runtime.BlazeModule;
+import com.google.devtools.build.lib.runtime.Command;
+import com.google.devtools.build.lib.runtime.CommandEnvironment;
+import com.google.devtools.common.options.OptionsBase;
+
+/**
+ * RemoteModule provides distributed cache and remote execution for Bazel.
+ */
+public final class RemoteModule extends BlazeModule {
+  private CommandEnvironment env;
+  private BuildRequest buildRequest;
+  private RemoteActionCache actionCache;
+  private RemoteWorkExecutor workExecutor;
+
+  public RemoteModule() {}
+
+  @Override
+  public Iterable<ActionContextProvider> getActionContextProviders() {
+    if (actionCache != null) {
+      return ImmutableList.<ActionContextProvider>of(
+          new RemoteActionContextProvider(env, buildRequest, actionCache, workExecutor));
+    }
+    return ImmutableList.<ActionContextProvider>of();
+  }
+
+  @Override
+  public void beforeCommand(Command command, CommandEnvironment env) {
+    this.env = env;
+    env.getEventBus().register(this);
+  }
+
+  @Override
+  public void afterCommand() {
+    this.env = null;
+    this.buildRequest = null;
+  }
+
+  @Subscribe
+  public void buildStarting(BuildStartingEvent event) {
+    buildRequest = event.getRequest();
+    RemoteOptions options = buildRequest.getOptions(RemoteOptions.class);
+
+    // Don't provide the remote spawn unless at least action cache is initialized.
+    if (actionCache == null && options.hazelcastNode != null) {
+      actionCache =
+          new MemcacheActionCache(
+              this.env.getRuntime().getExecRoot(),
+              options,
+              HazelcastCacheFactory.create(options));
+      // TODO(alpha): Initialize a RemoteWorkExecutor.
+    }
+  }
+
+  @Override
+  public Iterable<Class<? extends OptionsBase>> getCommandOptions(Command command) {
+    return command.builds()
+        ? ImmutableList.<Class<? extends OptionsBase>>of(RemoteOptions.class)
+        : ImmutableList.<Class<? extends OptionsBase>>of();
+  }
+}