co.cask.cdap.operations.yarn.YarnApps.java Source code

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Here is the source code for co.cask.cdap.operations.yarn.YarnApps.java

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/*
 * Copyright  2016 Cask Data, Inc.
 *
 * Licensed 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 co.cask.cdap.operations.yarn;

import co.cask.cdap.operations.OperationalStats;
import com.google.common.annotations.VisibleForTesting;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.yarn.api.records.ApplicationReport;
import org.apache.hadoop.yarn.client.api.YarnClient;

import java.util.List;

/**
 * {@link OperationalStats} for collecting Yarn app statistics.
 */
public class YarnApps extends AbstractYarnStats implements OperationalStats, YarnAppsMXBean {

    private int newApps;
    private int accepted;
    private int submitted;
    private int running;
    private int finished;
    private int failed;
    private int killed;
    private int total;

    @SuppressWarnings("unused")
    public YarnApps() {
        this(new Configuration());
    }

    @VisibleForTesting
    YarnApps(Configuration conf) {
        super(conf);
    }

    @Override
    public String getStatType() {
        return "apps";
    }

    @Override
    public int getNew() {
        return newApps;
    }

    @Override
    public int getTotal() {
        return total;
    }

    @Override
    public int getSubmitted() {
        return submitted;
    }

    @Override
    public int getAccepted() {
        return accepted;
    }

    @Override
    public int getRunning() {
        return running;
    }

    @Override
    public int getFinished() {
        return finished;
    }

    @Override
    public int getFailed() {
        return failed;
    }

    @Override
    public int getKilled() {
        return killed;
    }

    @Override
    public synchronized void collect() throws Exception {
        reset();
        YarnClient yarnClient = createYARNClient();
        List<ApplicationReport> applications;
        try {
            applications = yarnClient.getApplications();
        } finally {
            yarnClient.stop();
        }
        for (ApplicationReport application : applications) {
            switch (application.getYarnApplicationState()) {
            case NEW:
            case NEW_SAVING:
                newApps++;
                break;
            case ACCEPTED:
                accepted++;
                break;
            case SUBMITTED:
                submitted++;
                break;
            case RUNNING:
                running++;
                break;
            case FINISHED:
                finished++;
                break;
            case FAILED:
                failed++;
                break;
            case KILLED:
                killed++;
                break;
            }
        }
        total = applications.size();
    }

    private void reset() {
        newApps = 0;
        accepted = 0;
        submitted = 0;
        running = 0;
        finished = 0;
        failed = 0;
        killed = 0;
        total = 0;
    }
}