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// 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(
env.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();
}
}
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