ZookeeperServerTest.java

/**
 * Copyright 2016 Yahoo 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 com.yahoo.pulsar.zookeeper;

import java.io.Closeable;
import java.io.File;
import java.io.IOException;
import java.net.InetSocketAddress;

import org.apache.zookeeper.server.NIOServerCnxnFactory;
import org.apache.zookeeper.server.ZooKeeperServer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class ZookeeperServerTest implements Closeable {
    private final File zkTmpDir;
    private ZooKeeperServer zks;
    private NIOServerCnxnFactory serverFactory;
    private final int zkPort;
    private final String hostPort;

    public ZookeeperServerTest(int zkPort) throws IOException {
        this.zkPort = zkPort;
        this.hostPort = "127.0.0.1:" + zkPort;
        this.zkTmpDir = File.createTempFile("zookeeper", "test");
        log.info("**** Start GZK on {} ****", zkTmpDir);
        if (!zkTmpDir.delete() || !zkTmpDir.mkdir()) {
            throw new IOException("Couldn't create zk directory " + zkTmpDir);
        }
    }

    public void start() throws IOException {
        try {
            zks = new ZooKeeperServer(zkTmpDir, zkTmpDir, ZooKeeperServer.DEFAULT_TICK_TIME);
            zks.setMaxSessionTimeout(20000);
            serverFactory = new NIOServerCnxnFactory();
            serverFactory.configure(new InetSocketAddress(zkPort), 1000);
            serverFactory.startup(zks);
        } catch (Exception e) {
            log.error("Exception while instantiating ZooKeeper", e);
        }

        LocalBookkeeperEnsemble.waitForServerUp(hostPort, 30000);
        log.info("ZooKeeper started at {}", hostPort);
    }

    public void stop() throws IOException {
        zks.shutdown();
        serverFactory.shutdown();
        log.info("Stoppend ZK server at {}", hostPort);
    }

    @Override
    public void close() throws IOException {
        zks.shutdown();
        serverFactory.shutdown();
        zkTmpDir.delete();
    }

    private static final Logger log = LoggerFactory.getLogger(ZookeeperServerTest.class);
}