| // Copyright 2018 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.flogger.GoogleLogger; |
| import com.google.devtools.build.lib.actions.UserExecException; |
| import com.google.devtools.build.lib.events.EventHandler; |
| import com.google.devtools.build.lib.sandbox.SandboxHelpers.SandboxInputs; |
| import com.google.devtools.build.lib.sandbox.SandboxHelpers.SandboxOutputs; |
| import com.google.devtools.build.lib.vfs.Path; |
| import com.google.devtools.build.lib.vfs.PathFragment; |
| import com.google.devtools.build.lib.worker.WorkerProtocol.WorkRequest; |
| import com.google.devtools.build.lib.worker.WorkerProtocol.WorkResponse; |
| import java.io.IOException; |
| import java.util.Optional; |
| import java.util.Set; |
| |
| /** A proxy that talks to the multiplexer */ |
| final class WorkerProxy extends Worker { |
| private static final GoogleLogger logger = GoogleLogger.forEnclosingClass(); |
| private final WorkerMultiplexer workerMultiplexer; |
| /** The execution root of the worker. */ |
| private final Path workDir; |
| |
| private Thread shutdownHook; |
| |
| WorkerProxy( |
| WorkerKey workerKey, |
| int workerId, |
| Path logFile, |
| WorkerMultiplexer workerMultiplexer) { |
| super(workerKey, workerId, logFile); |
| this.workDir = workerKey.getExecRoot(); |
| this.workerMultiplexer = workerMultiplexer; |
| final WorkerProxy self = this; |
| this.shutdownHook = |
| new Thread( |
| () -> { |
| self.shutdownHook = null; |
| self.destroy(); |
| }); |
| Runtime.getRuntime().addShutdownHook(shutdownHook); |
| } |
| |
| @Override |
| void setReporter(EventHandler reporter) { |
| // We might have created this multiplexer after setting the reporter for existing multiplexers |
| workerMultiplexer.setReporter(reporter); |
| } |
| |
| @Override |
| public void prepareExecution( |
| SandboxInputs inputFiles, SandboxOutputs outputs, Set<PathFragment> workerFiles) |
| throws IOException { |
| workerMultiplexer.createProcess(workDir); |
| } |
| |
| @Override |
| synchronized void destroy() { |
| try { |
| WorkerMultiplexerManager.removeInstance(workerKey); |
| } catch (UserExecException e) { |
| logger.atWarning().withCause(e).log("Exception"); |
| } finally { |
| if (this.shutdownHook != null) { |
| Runtime.getRuntime().removeShutdownHook(this.shutdownHook); |
| this.shutdownHook = null; |
| } |
| } |
| } |
| |
| /** Send the WorkRequest to multiplexer. */ |
| @Override |
| void putRequest(WorkRequest request) throws IOException { |
| workerMultiplexer.putRequest(request); |
| } |
| |
| /** Wait for WorkResponse from multiplexer. */ |
| @Override |
| WorkResponse getResponse(int requestId) throws InterruptedException { |
| return workerMultiplexer.getResponse(requestId); |
| } |
| |
| @Override |
| public void finishExecution(Path execRoot) {} |
| |
| @Override |
| boolean diedUnexpectedly() { |
| return workerMultiplexer.diedUnexpectedly(); |
| } |
| |
| @Override |
| public Optional<Integer> getExitValue() { |
| return workerMultiplexer.getExitValue(); |
| } |
| |
| @Override |
| String getRecordingStreamMessage() { |
| return workerMultiplexer.getRecordingStreamMessage(); |
| } |
| |
| @Override |
| public String toString() { |
| return workerKey.getMnemonic() + " proxy worker #" + workerId; |
| } |
| } |