/*
 *
 * 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.bookkeeper.shims.zk;

import java.io.File;
import java.io.IOException;
import java.net.InetSocketAddress;
import org.apache.zookeeper.server.NIOServerCnxnFactory;
import org.apache.zookeeper.server.ZooKeeperServer;

class ZooKeeperServerShimImpl implements ZooKeeperServerShim {

    ZooKeeperServer zks = null;
    NIOServerCnxnFactory serverFactory = null;

    @Override
    public void initialize(File snapDir, File logDir, int zkPort, int maxCC) throws IOException {
        zks = new ZooKeeperServer(snapDir, logDir, ZooKeeperServer.DEFAULT_TICK_TIME);
        serverFactory = new NIOServerCnxnFactory();
        serverFactory.configure(new InetSocketAddress(zkPort), maxCC);
    }

    @Override
    public void start() throws IOException {
        if (null == zks || null == serverFactory) {
            throw new IOException("Start zookeeper server before initialization.");
        }
        try {
            serverFactory.startup(zks);
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
            throw new IOException("Interrupted when starting zookeeper server : ", e);
        }
    }

    @Override
    public void stop() {
        if (null != serverFactory) {
            serverFactory.shutdown();
        }
        if (null != zks) {
            zks.shutdown();
        }
    }
}
