elasticjob-cloud/elastic-job-cloud-common/src/test/java/org/apache/shardingsphere/elasticjob/cloud/fixture/EmbedTestingServer.java

/*
 * 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.shardingsphere.elasticjob.cloud.fixture;

import com.google.common.base.Joiner;
import org.apache.shardingsphere.elasticjob.cloud.reg.exception.RegExceptionHandler;
import lombok.AccessLevel;
import lombok.NoArgsConstructor;
import org.apache.curator.test.TestingServer;

import java.io.File;
import java.io.IOException;

@NoArgsConstructor(access = AccessLevel.PRIVATE)
public final class EmbedTestingServer {
    
    private static final int PORT = 3181;
    
    private static volatile TestingServer testingServer;

    /**
     * Get connection url.
     * @return the connection
     */
    public static String getConnectionString() {
        return Joiner.on(":").join("localhost", PORT);
    }

    /**
     * Start the embed server.
     */
    public static void start() {
        if (null != testingServer) {
            return;
        }
        try {
            testingServer = new TestingServer(PORT, new File(String.format("target/test_zk_data/%s/", System.nanoTime())));
            // CHECKSTYLE:OFF
        } catch (final Exception ex) {
            // CHECKSTYLE:ON
            RegExceptionHandler.handleException(ex);
        } finally {
            Runtime.getRuntime().addShutdownHook(new Thread() {
                
                @Override
                public void run() {
                    try {
                        testingServer.close();
                    } catch (final IOException ex) {
                        RegExceptionHandler.handleException(ex);
                    }
                }
            });
        }
    }
}