com.qwazr.database.TableServer Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of qwazr-database Show documentation
Database Engine for QWAZR
There is a newer version: 1.5.0
/*
 * Copyright 2015-2017 Emmanuel Keller / QWAZR
 * 
 * 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.qwazr.database;

import com.qwazr.cluster.ClusterManager;
import com.qwazr.cluster.ClusterServiceInterface;
import com.qwazr.server.ApplicationBuilder;
import com.qwazr.server.BaseServer;
import com.qwazr.server.GenericServer;
import com.qwazr.server.GenericServerBuilder;
import com.qwazr.server.RestApplication;
import com.qwazr.server.WelcomeShutdownService;
import com.qwazr.server.configuration.ServerConfiguration;

import javax.management.JMException;
import javax.servlet.ServletException;
import java.io.IOException;
import java.net.URISyntaxException;
import java.util.HashSet;
import java.util.Set;
import java.util.concurrent.ExecutorService;

public class TableServer implements BaseServer {

    private final GenericServer server;
    private final TableServiceBuilder serviceBuilder;

    public TableServer(final ServerConfiguration serverConfiguration) throws IOException {

        final TableSingleton tableSingleton = new TableSingleton(serverConfiguration.dataDirectory, null);
        final ExecutorService executorService = tableSingleton.getExecutorService();

        final GenericServerBuilder builder = GenericServer.of(serverConfiguration, executorService);
        final ApplicationBuilder webServices = ApplicationBuilder.of("/*").classes(RestApplication.JSON_CLASSES).
                singletons(new WelcomeShutdownService());
        final Set services = new HashSet<>();
        services.add(ClusterServiceInterface.SERVICE_NAME);
        services.add(TableServiceInterface.SERVICE_NAME);

        final ClusterManager clusterManager =
                new ClusterManager(executorService, serverConfiguration).registerProtocolListener(builder, services);
        webServices.singletons(clusterManager.getService());

        final TableManager tableManager = tableSingleton.getTableManager();
        webServices.singletons(tableManager.getService());
        serviceBuilder = new TableServiceBuilder(clusterManager, tableManager);

        builder.getWebServiceContext().jaxrs(webServices);
        builder.shutdownListener(server -> tableSingleton.close());
        server = builder.build();
    }

    public TableServiceBuilder getServiceBuilder() {
        return serviceBuilder;
    }

    public GenericServer getServer() {
        return server;
    }

    private static volatile TableServer INSTANCE;

    public static synchronized TableServer getInstance() {
        return INSTANCE;
    }

    public static synchronized void main(final String... args)
            throws IOException, ServletException, JMException {
        if (INSTANCE != null)
            shutdown();
        INSTANCE = new TableServer(new ServerConfiguration(args));
        INSTANCE.start();
    }

    public static synchronized void shutdown() {
        if (INSTANCE != null)
            INSTANCE.stop();
        INSTANCE = null;
    }

}