| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.beam.runners.dataflow.worker; |
| |
| import java.io.PrintStream; |
| import java.lang.Thread.UncaughtExceptionHandler; |
| import org.apache.beam.runners.dataflow.worker.logging.DataflowWorkerLoggingInitializer; |
| import org.apache.beam.runners.dataflow.worker.util.common.worker.JvmRuntime; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.annotations.VisibleForTesting; |
| import org.slf4j.Logger; |
| |
| /** |
| * This uncaught exception handler logs the {@link Throwable} to the logger, {@link System#err} and |
| * exits the application with status code 1. |
| */ |
| class WorkerUncaughtExceptionHandler implements UncaughtExceptionHandler { |
| private final JvmRuntime runtime; |
| private final Logger logger; |
| |
| WorkerUncaughtExceptionHandler(Logger logger) { |
| this(JvmRuntime.INSTANCE, logger); |
| } |
| |
| @VisibleForTesting |
| WorkerUncaughtExceptionHandler(JvmRuntime runtime, Logger logger) { |
| this.runtime = runtime; |
| this.logger = logger; |
| } |
| |
| @Override |
| public void uncaughtException(Thread thread, Throwable e) { |
| try { |
| logger.error("Uncaught exception in main thread. Exiting with status code 1.", e); |
| System.err.println("Uncaught exception in main thread. Exiting with status code 1."); |
| e.printStackTrace(); |
| } catch (Throwable t) { |
| PrintStream originalStdErr = DataflowWorkerLoggingInitializer.getOriginalStdErr(); |
| if (originalStdErr != null) { |
| originalStdErr.println("Uncaught exception in main thread. Exiting with status code 1."); |
| e.printStackTrace(originalStdErr); |
| |
| originalStdErr.println( |
| "UncaughtExceptionHandler caused another exception to be thrown, as follows:"); |
| t.printStackTrace(originalStdErr); |
| } |
| } finally { |
| runtime.halt(1); |
| } |
| } |
| } |