// 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.util;
import com.google.devtools.build.lib.vfs.FileSystemUtils;
import com.google.devtools.build.lib.vfs.Path;
import java.io.IOException;
import javax.annotation.Nullable;
/**
* Provides an external way for the Bazel server to communicate its exit code to the client, when
* the main gRPC channel is unavailable because the exit is too abrupt or originated in an async
* thread.
*/
public class CustomExitCodePublisher {
private static final String EXIT_CODE_FILENAME = "exit_code_to_use_on_abrupt_exit";
@Nullable private static Path abruptExitCodeFilePath = null;
public static void setAbruptExitStatusFileDir(Path path) {
abruptExitCodeFilePath = path.getChild(EXIT_CODE_FILENAME);
}
public static void maybeWriteExitStatusFile(int exitCode) {
if (abruptExitCodeFilePath != null) {
try {
FileSystemUtils.writeContentAsLatin1(abruptExitCodeFilePath, String.valueOf(exitCode));
} catch (IOException ioe) {
System.err.printf(
"io error writing %d to abrupt exit status file %s: %s\n",
exitCode, abruptExitCodeFilePath, ioe.getMessage());
}
}
}
}