gobblin.cluster.GobblinClusterUtils.java Source code

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Here is the source code for gobblin.cluster.GobblinClusterUtils.java

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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 gobblin.cluster;

import java.net.InetAddress;
import java.net.UnknownHostException;

import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;

import gobblin.annotation.Alpha;

@Alpha
public class GobblinClusterUtils {

    /**
     * Get the name of the current host.
     *
     * @return the name of the current host
     * @throws UnknownHostException if the host name is unknown
     */
    public static String getHostname() throws UnknownHostException {
        return InetAddress.getLocalHost().getHostName();
    }

    /**
     * Get the application working directory {@link Path}.
     *
     * @param fs a {@link FileSystem} instance on which {@link FileSystem#getHomeDirectory()} is called
     *           to get the home directory of the {@link FileSystem} of the application working directory
     * @param applicationName the application name
     * @param applicationId the application ID in string form
     * @return the cluster application working directory {@link Path}
     */
    public static Path getAppWorkDirPath(FileSystem fs, String applicationName, String applicationId) {
        return new Path(fs.getHomeDirectory(), getAppWorkDirPath(applicationName, applicationId));
    }

    /**
     * Get the application working directory {@link String}.
     *
     * @param applicationName the application name
     * @param applicationId the application ID in string form
     * @return the cluster application working directory {@link String}
     */
    public static String getAppWorkDirPath(String applicationName, String applicationId) {
        return applicationName + Path.SEPARATOR + applicationId;
    }
}