TaskManagerActions.java

/*
 * 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.taskmanager;

import org.apache.flink.runtime.executiongraph.ExecutionAttemptID;

/**
 * Interface for the communication of the {@link Task} with the {@link TaskManager}.
 */
public interface TaskManagerActions {

	/**
	 * Notifies the task manager that the given task is in a final state.
	 *
	 * @param executionAttemptID Execution attempt ID of the task
	 */
	void notifyFinalState(ExecutionAttemptID executionAttemptID);

	/**
	 * Notifies the task manager about a fatal error occurred in the task.
	 *
	 * @param message Message to report
	 * @param cause Cause of the fatal error
	 */
	void notifyFatalError(String message, Throwable cause);

	/**
	 * Tells the task manager to fail the given task.
	 *
	 * @param executionAttemptID Execution attempt ID of the task to fail
	 * @param cause Cause of the failure
	 */
	void failTask(ExecutionAttemptID executionAttemptID, Throwable cause);

	/**
	 * Notifies the task manager about the task execution state update.
	 *
	 * @param taskExecutionState Task execution state update
	 */
	void updateTaskExecutionState(TaskExecutionState taskExecutionState);
}