com.blackberry.bdp.test.utils.LocalZkServer.java Source code

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Here is the source code for com.blackberry.bdp.test.utils.LocalZkServer.java

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/**
 * Copyright 2014 BlackBerry, Limited.
 *
 * 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.blackberry.bdp.test.utils;

import java.io.File;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.InetSocketAddress;

import org.apache.commons.io.FileUtils;
import org.apache.zookeeper.server.ZooKeeperServer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class LocalZkServer {
    private static final Logger LOG = LoggerFactory.getLogger(LocalZkServer.class);

    private final int clientPort = 21818; // non-standard
    private final int numConnections = 5000;
    private final int tickTime = 2000;

    private Class<?> factoryClass;
    private Object standaloneServerFactory;
    private File dir;

    private ZooKeeperServer server;

    public LocalZkServer()
            throws InstantiationException, IllegalAccessException, SecurityException, NoSuchMethodException,
            IllegalArgumentException, InvocationTargetException, ClassNotFoundException, IOException {
        String dataDirectory = System.getProperty("java.io.tmpdir");

        dir = new File(dataDirectory, "zookeeper").getAbsoluteFile();

        while (dir.exists()) {
            LOG.info("deleting {}", dir);
            FileUtils.deleteDirectory(dir);
        }

        server = new ZooKeeperServer(dir, dir, tickTime);

        // The class that we need changed name between CDH3 and CDH4, so let's check
        // for the right version here.
        try {
            factoryClass = Class.forName("org.apache.zookeeper.server.NIOServerCnxnFactory");

            standaloneServerFactory = factoryClass.newInstance();
            Method configure = factoryClass.getMethod("configure", InetSocketAddress.class, Integer.TYPE);
            configure.invoke(standaloneServerFactory, new InetSocketAddress(clientPort), numConnections);
            Method startup = factoryClass.getMethod("startup", ZooKeeperServer.class);
            startup.invoke(standaloneServerFactory, server);

        } catch (ClassNotFoundException e) {
            LOG.info("Did not find NIOServerCnxnFactory");
            try {
                factoryClass = Class.forName("org.apache.zookeeper.server.NIOServerCnxn$Factory");

                Constructor<?> constructor = factoryClass.getConstructor(InetSocketAddress.class, Integer.TYPE);
                standaloneServerFactory = constructor.newInstance(new InetSocketAddress(clientPort),
                        numConnections);
                Method startup = factoryClass.getMethod("startup", ZooKeeperServer.class);
                startup.invoke(standaloneServerFactory, server);

            } catch (ClassNotFoundException e1) {
                LOG.info("Did not find NIOServerCnxn.Factory");
                throw new ClassNotFoundException("Can't find NIOServerCnxnFactory or NIOServerCnxn.Factory");
            }
        }
    }

    public void shutdown() throws IllegalArgumentException, IllegalAccessException, InvocationTargetException,
            SecurityException, NoSuchMethodException, IOException {
        server.shutdown();

        Method shutdown = factoryClass.getMethod("shutdown", new Class<?>[] {});
        shutdown.invoke(standaloneServerFactory, new Object[] {});

        while (dir.exists()) {
            LOG.info("deleting {}", dir);
            FileUtils.deleteDirectory(dir);
        }
    }

    public Class<?> getFactoryClass() {
        return factoryClass;
    }

    public void setFactoryClass(Class<?> factoryClass) {
        this.factoryClass = factoryClass;
    }

    public Object getStandaloneServerFactory() {
        return standaloneServerFactory;
    }

    public void setStandaloneServerFactory(Object standaloneServerFactory) {
        this.standaloneServerFactory = standaloneServerFactory;
    }

    public File getDir() {
        return dir;
    }

    public int getClientport() {
        return clientPort;
    }

    public int getNumconnections() {
        return numConnections;
    }

    public int getTicktime() {
        return tickTime;
    }

    public ZooKeeperServer getServer() {
        return server;
    }

}