| /* |
| * 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.flink.runtime.executiongraph; |
| |
| import org.apache.flink.util.FlinkException; |
| import org.apache.flink.util.Preconditions; |
| import org.apache.flink.util.SerializedThrowable; |
| |
| import javax.annotation.Nonnull; |
| import javax.annotation.Nullable; |
| |
| import java.io.Serializable; |
| |
| /** Simple container to hold an exception and the corresponding timestamp. */ |
| public class ErrorInfo implements Serializable { |
| |
| private static final long serialVersionUID = -6138942031953594202L; |
| |
| /** |
| * The exception that we keep holding forever. Has no strong reference to any user-defined code. |
| */ |
| private final SerializedThrowable exception; |
| |
| private final long timestamp; |
| |
| /** |
| * Instantiates an {@code ErrorInfo} to cover inconsistent behavior due to FLINK-21376. |
| * |
| * @param exception The error cause that might be {@code null}. |
| * @param timestamp The timestamp the error was noticed. |
| * @return a {@code ErrorInfo} containing a generic {@link FlinkException} in case of a missing |
| * error cause. |
| */ |
| public static ErrorInfo createErrorInfoWithNullableCause( |
| @Nullable Throwable exception, long timestamp) { |
| return new ErrorInfo(handleMissingThrowable(exception), timestamp); |
| } |
| |
| /** |
| * Utility method to cover FLINK-21376. |
| * |
| * @param throwable The actual exception. |
| * @return a {@link FlinkException} if no exception was passed. |
| */ |
| public static Throwable handleMissingThrowable(@Nullable Throwable throwable) { |
| return throwable != null |
| ? throwable |
| : new FlinkException( |
| "Unknown cause for Execution failure (this might be caused by FLINK-21376)."); |
| } |
| |
| public ErrorInfo(@Nonnull Throwable exception, long timestamp) { |
| Preconditions.checkNotNull(exception); |
| Preconditions.checkArgument(timestamp > 0); |
| |
| this.exception = |
| exception instanceof SerializedThrowable |
| ? (SerializedThrowable) exception |
| : new SerializedThrowable(exception); |
| this.timestamp = timestamp; |
| } |
| |
| /** Returns the serialized form of the original exception. */ |
| public SerializedThrowable getException() { |
| return exception; |
| } |
| |
| /** |
| * Returns the contained exception as a string. |
| * |
| * @return failure causing exception as a string, or {@code "(null)"} |
| */ |
| public String getExceptionAsString() { |
| return exception.getFullStringifiedStackTrace(); |
| } |
| |
| /** |
| * Returns the timestamp for the contained exception. |
| * |
| * @return timestamp of contained exception, or 0 if no exception was set |
| */ |
| public long getTimestamp() { |
| return timestamp; |
| } |
| } |