flink-clients/src/main/java/org/apache/flink/client/deployment/StandaloneClusterDescriptor.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.client.deployment;

import org.apache.flink.client.program.rest.RestClusterClient;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.configuration.JobManagerOptions;
import org.apache.flink.runtime.jobgraph.JobGraph;
import org.apache.flink.util.FlinkException;
import org.apache.flink.util.Preconditions;

/**
 * A deployment descriptor for an existing cluster.
 */
public class StandaloneClusterDescriptor implements ClusterDescriptor<StandaloneClusterId> {

	private final Configuration config;

	public StandaloneClusterDescriptor(Configuration config) {
		this.config = Preconditions.checkNotNull(config);
	}

	@Override
	public String getClusterDescription() {
		String host = config.getString(JobManagerOptions.ADDRESS, "");
		int port = config.getInteger(JobManagerOptions.PORT, -1);
		return "Standalone cluster at " + host + ":" + port;
	}

	@Override
	public RestClusterClient<StandaloneClusterId> retrieve(StandaloneClusterId standaloneClusterId) throws ClusterRetrieveException {
		try {
			return new RestClusterClient<>(config, standaloneClusterId);
		} catch (Exception e) {
			throw new ClusterRetrieveException("Couldn't retrieve standalone cluster", e);
		}
	}

	@Override
	public RestClusterClient<StandaloneClusterId> deploySessionCluster(ClusterSpecification clusterSpecification) {
		throw new UnsupportedOperationException("Can't deploy a standalone cluster.");
	}

	@Override
	public RestClusterClient<StandaloneClusterId> deployJobCluster(
			ClusterSpecification clusterSpecification,
			JobGraph jobGraph,
			boolean detached) {
		throw new UnsupportedOperationException("Can't deploy a standalone per-job cluster.");
	}

	@Override
	public void killCluster(StandaloneClusterId clusterId) throws FlinkException {
		throw new UnsupportedOperationException("Cannot terminate a standalone cluster.");
	}

	@Override
	public void close() throws Exception {
		// nothing to do
	}
}