| // Copyright 2015 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.worker; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.eventbus.Subscribe; |
| import com.google.devtools.build.lib.actions.ActionContextConsumer; |
| import com.google.devtools.build.lib.actions.ActionContextProvider; |
| import com.google.devtools.build.lib.buildtool.BuildRequest; |
| import com.google.devtools.build.lib.buildtool.buildevent.BuildCompleteEvent; |
| import com.google.devtools.build.lib.buildtool.buildevent.BuildInterruptedEvent; |
| import com.google.devtools.build.lib.buildtool.buildevent.BuildStartingEvent; |
| import com.google.devtools.build.lib.events.Event; |
| 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.build.lib.util.Preconditions; |
| import com.google.devtools.build.lib.vfs.Path; |
| import com.google.devtools.common.options.OptionsBase; |
| |
| import org.apache.commons.pool2.impl.GenericKeyedObjectPoolConfig; |
| |
| import java.io.IOException; |
| |
| /** |
| * A module that adds the WorkerActionContextProvider to the available action context providers. |
| */ |
| public class WorkerModule extends BlazeModule { |
| private WorkerPool workers; |
| |
| private CommandEnvironment env; |
| private BuildRequest buildRequest; |
| private boolean verbose; |
| |
| @Override |
| public Iterable<Class<? extends OptionsBase>> getCommandOptions(Command command) { |
| return command.builds() |
| ? ImmutableList.<Class<? extends OptionsBase>>of(WorkerOptions.class) |
| : ImmutableList.<Class<? extends OptionsBase>>of(); |
| } |
| |
| @Override |
| public void beforeCommand(Command command, CommandEnvironment env) { |
| this.env = env; |
| env.getEventBus().register(this); |
| |
| if (workers == null) { |
| Path logDir = env.getRuntime().getOutputBase().getRelative("worker-logs"); |
| try { |
| logDir.createDirectory(); |
| } catch (IOException e) { |
| env |
| .getReporter() |
| .handle(Event.error("Could not create directory for worker logs: " + logDir)); |
| } |
| |
| GenericKeyedObjectPoolConfig config = new GenericKeyedObjectPoolConfig(); |
| |
| // It's better to re-use a worker as often as possible and keep it hot, in order to profit |
| // from JIT optimizations as much as possible. |
| config.setLifo(true); |
| |
| // Check for & deal with idle workers every 5 seconds. |
| config.setTimeBetweenEvictionRunsMillis(5 * 1000); |
| |
| // Always test the liveliness of worker processes. |
| config.setTestOnBorrow(true); |
| config.setTestOnCreate(true); |
| config.setTestOnReturn(true); |
| config.setTestWhileIdle(true); |
| |
| // Don't limit the total number of worker processes, as otherwise the pool might be full of |
| // e.g. Java workers and could never accommodate another request for a different kind of |
| // worker. |
| config.setMaxTotal(-1); |
| |
| workers = new WorkerPool(new WorkerFactory(), config); |
| workers.setReporter(env.getReporter()); |
| workers.setLogDirectory(logDir); |
| } |
| } |
| |
| @Subscribe |
| public void buildStarting(BuildStartingEvent event) { |
| Preconditions.checkNotNull(workers); |
| |
| this.buildRequest = event.getRequest(); |
| |
| WorkerOptions options = buildRequest.getOptions(WorkerOptions.class); |
| workers.setMaxTotalPerKey(options.workerMaxInstances); |
| workers.setMaxIdlePerKey(options.workerMaxInstances); |
| workers.setMinIdlePerKey(options.workerMaxInstances); |
| workers.setVerbose(options.workerVerbose); |
| this.verbose = options.workerVerbose; |
| } |
| |
| @Override |
| public Iterable<ActionContextProvider> getActionContextProviders() { |
| Preconditions.checkNotNull(env); |
| Preconditions.checkNotNull(buildRequest); |
| Preconditions.checkNotNull(workers); |
| |
| return ImmutableList.<ActionContextProvider>of( |
| new WorkerActionContextProvider( |
| env.getRuntime(), buildRequest, workers, env.getEventBus())); |
| } |
| |
| @Override |
| public Iterable<ActionContextConsumer> getActionContextConsumers() { |
| return ImmutableList.<ActionContextConsumer>of(new WorkerActionContextConsumer()); |
| } |
| |
| @Subscribe |
| public void buildComplete(BuildCompleteEvent event) { |
| if (workers != null && buildRequest.getOptions(WorkerOptions.class).workerQuitAfterBuild) { |
| if (verbose) { |
| env |
| .getReporter() |
| .handle(Event.info("Build completed, shutting down worker pool...")); |
| } |
| workers.close(); |
| workers = null; |
| } |
| } |
| |
| // Kill workers on Ctrl-C to quickly end the interrupted build. |
| // TODO(philwo) - make sure that this actually *kills* the workers and not just politely waits |
| // for them to finish. |
| @Subscribe |
| public void buildInterrupted(BuildInterruptedEvent event) { |
| if (workers != null) { |
| if (verbose) { |
| env |
| .getReporter() |
| .handle(Event.info("Build interrupted, shutting down worker pool...")); |
| } |
| workers.close(); |
| workers = null; |
| } |
| } |
| |
| @Override |
| public void afterCommand() { |
| this.env = null; |
| this.buildRequest = null; |
| this.verbose = false; |
| } |
| } |