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/*
 * 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.kubernetes.entrypoint;

import org.apache.flink.configuration.Configuration;
import org.apache.flink.runtime.entrypoint.ClusterEntrypoint;
import org.apache.flink.runtime.entrypoint.JobClusterEntrypoint;
import org.apache.flink.runtime.entrypoint.component.DefaultDispatcherResourceManagerComponentFactory;
import org.apache.flink.runtime.entrypoint.component.DispatcherResourceManagerComponentFactory;
import org.apache.flink.runtime.entrypoint.component.FileJobGraphRetriever;
import org.apache.flink.runtime.util.EnvironmentInformation;
import org.apache.flink.runtime.util.JvmShutdownSafeguard;
import org.apache.flink.runtime.util.SignalHandler;

import java.io.IOException;

/**
 * Entry point for a Kubernetes per-job cluster.
 */
public class KubernetesJobClusterEntrypoint extends JobClusterEntrypoint {

	public KubernetesJobClusterEntrypoint(Configuration configuration) {
		super(configuration);
	}

	@Override
	protected DispatcherResourceManagerComponentFactory createDispatcherResourceManagerComponentFactory(Configuration configuration) throws IOException {
		return DefaultDispatcherResourceManagerComponentFactory.createJobComponentFactory(
			KubernetesResourceManagerFactory.getInstance(),
			FileJobGraphRetriever.createFrom(configuration, null));
	}

	// ------------------------------------------------------------------------
	//  The executable entry point for the Flink JobManager Process
	//  for a single Flink job.
	// ------------------------------------------------------------------------

	public static void main(String[] args) {
		// startup checks and logging
		EnvironmentInformation.logEnvironmentInfo(LOG, KubernetesJobClusterEntrypoint.class.getSimpleName(), args);
		SignalHandler.register(LOG);
		JvmShutdownSafeguard.installAsShutdownHook(LOG);

		final ClusterEntrypoint kubernetesJobClusterEntrypoint = new KubernetesJobClusterEntrypoint(
			KubernetesEntrypointUtils.loadConfiguration());
		ClusterEntrypoint.runClusterEntrypoint(kubernetesJobClusterEntrypoint);
	}
}