org.apache.eagle.service.hbase.EmbeddedHbase.java Source code

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Here is the source code for org.apache.eagle.service.hbase.EmbeddedHbase.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 org.apache.eagle.service.hbase;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.MiniHBaseCluster;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class EmbeddedHbase {
    private HBaseTestingUtility util;
    private MiniHBaseCluster hbaseCluster;
    private static EmbeddedHbase hbase;
    private int port;
    private String znode;
    private static int DEFAULT_PORT = 2181;
    private static String DEFAULT_ZNODE = "/hbase-unsecure";
    private static final Logger LOG = LoggerFactory.getLogger(EmbeddedHbase.class);

    private EmbeddedHbase(int port, String znode) {
        this.port = port;
        this.znode = znode;
    }

    private EmbeddedHbase(int port) {
        this(port, DEFAULT_ZNODE);
    }

    public static EmbeddedHbase getInstance(Configuration conf) {
        if (hbase == null) {
            synchronized (EmbeddedHbase.class) {
                if (hbase == null) {
                    hbase = new EmbeddedHbase();
                    hbase.start(conf);
                }
            }
        }
        return hbase;
    }

    public static EmbeddedHbase getInstance() {
        return getInstance(null);
    }

    private EmbeddedHbase() {
        this(DEFAULT_PORT, DEFAULT_ZNODE);
    }

    public void start() {
        start(null);
    }

    public void start(Configuration confMap) {
        try {
            util = new HBaseTestingUtility();
            Configuration conf = util.getConfiguration();
            if (confMap != null) {
                conf.addResource(confMap);
            }
            conf.setInt("test.hbase.zookeeper.property.clientPort", port);
            conf.set("zookeeper.znode.parent", znode);
            conf.setInt("hbase.zookeeper.property.maxClientCnxns", 200);

            conf.setInt("hbase.master.info.port", -1);//avoid port clobbering
            // start mini hbase cluster
            hbaseCluster = util.startMiniCluster();
            Configuration config = hbaseCluster.getConf();

            config.set("zookeeper.session.timeout", "120000");
            config.set("hbase.zookeeper.property.tickTime", "6000");
            config.set(HConstants.HBASE_CLIENT_PAUSE, "3000");
            config.set(HConstants.HBASE_CLIENT_RETRIES_NUMBER, "1");
            config.set(HConstants.HBASE_CLIENT_OPERATION_TIMEOUT, "60000");

            Runtime.getRuntime().addShutdownHook(new Thread() {
                @Override
                public void run() {
                    shutdown();
                }
            });
        } catch (Throwable t) {
            LOG.error("Got an exception: ", t);
        }
    }

    public void shutdown() {
        try {
            util.shutdownMiniCluster();
        } catch (Throwable t) {
            LOG.info("Got an exception, " + t, t.getCause());
            try {
                util.shutdownMiniCluster();
            } catch (Throwable t1) {
                // ignored
            }
        }
    }

    public void createTable(String tableName, String cf) {
        try {
            util.createTable(tableName, cf);
        } catch (Exception ex) {
            LOG.warn("Create table failed, probably table already existed, table name: " + tableName);
        }
    }

    public void deleteTable(String tableName) {
        try {
            util.deleteTable(tableName);
        } catch (Exception ex) {
            LOG.warn("Delete table failed, probably table not existed, table name: " + tableName);
        }
    }

    public static void main(String[] args) {
        EmbeddedHbase hbase = new EmbeddedHbase(12181);
        hbase.start();
        for (String table : new Tables().getTables()) {
            hbase.createTable(table, "f");
        }
    }
}