| // 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.runtime; |
| |
| import com.google.devtools.build.lib.runtime.BlazeCommandDispatcher.ShutdownMethod; |
| import com.google.devtools.build.lib.server.ServerCommand; |
| import com.google.devtools.build.lib.util.io.OutErr; |
| |
| import java.io.PrintWriter; |
| import java.io.StringWriter; |
| import java.util.List; |
| import java.util.logging.Logger; |
| |
| /** |
| * Executes a Blaze command. |
| * |
| * <p>This is the common execution path between the gRPC server and the legacy AF_UNIX server. |
| */ |
| public class CommandExecutor implements ServerCommand { |
| private static final Logger LOG = Logger.getLogger(CommandExecutor.class.getName()); |
| |
| private ShutdownMethod shutdown; |
| private final BlazeRuntime runtime; |
| private final BlazeCommandDispatcher dispatcher; |
| |
| CommandExecutor(BlazeRuntime runtime, BlazeCommandDispatcher dispatcher) { |
| this.shutdown = ShutdownMethod.NONE; |
| this.runtime = runtime; |
| this.dispatcher = dispatcher; |
| } |
| |
| @Override |
| public int exec(List<String> args, OutErr outErr, BlazeCommandDispatcher.LockingMode lockingMode, |
| String clientDescription, long firstContactTime) throws InterruptedException { |
| LOG.info(BlazeRuntime.getRequestLogString(args)); |
| |
| try { |
| return dispatcher.exec(args, outErr, lockingMode, clientDescription, firstContactTime); |
| } catch (BlazeCommandDispatcher.ShutdownBlazeServerException e) { |
| if (e.getCause() != null) { |
| StringWriter message = new StringWriter(); |
| message.write("Shutting down due to exception:\n"); |
| PrintWriter writer = new PrintWriter(message, true); |
| e.printStackTrace(writer); |
| writer.flush(); |
| LOG.severe(message.toString()); |
| } |
| shutdown = e.getMethod(); |
| runtime.shutdown(); |
| dispatcher.shutdown(); |
| return e.getExitStatus(); |
| } |
| } |
| |
| @Override |
| public ShutdownMethod shutdown() { |
| return shutdown; |
| } |
| } |