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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.runtime;
import com.google.devtools.build.lib.runtime.BlazeCommandDispatcher.LockingMode;
import com.google.devtools.build.lib.runtime.proto.InvocationPolicyOuterClass.InvocationPolicy;
import com.google.devtools.build.lib.server.ServerCommand;
import com.google.devtools.build.lib.util.Pair;
import com.google.devtools.build.lib.util.io.OutErr;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.List;
import java.util.Optional;
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 boolean shutdown;
private final BlazeRuntime runtime;
private final BlazeCommandDispatcher dispatcher;
CommandExecutor(BlazeRuntime runtime, BlazeCommandDispatcher dispatcher) {
this.shutdown = false;
this.runtime = runtime;
this.dispatcher = dispatcher;
}
@Override
public int exec(
InvocationPolicy invocationPolicy,
List<String> args,
OutErr outErr,
LockingMode lockingMode,
String clientDescription,
long firstContactTime,
Optional<List<Pair<String, String>>> startupOptionsTaggedWithBazelRc)
throws InterruptedException {
LOG.info(BlazeRuntime.getRequestLogString(args));
try {
return dispatcher.exec(
invocationPolicy,
args,
outErr,
lockingMode,
clientDescription,
firstContactTime,
startupOptionsTaggedWithBazelRc);
} 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 = true;
runtime.shutdown();
dispatcher.shutdown();
return e.getExitStatus();
}
}
@Override
public boolean shutdown() {
return shutdown;
}
}
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