com.github.ithildir.airbot.BaseServiceVerticle.java Source code

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Here is the source code for com.github.ithildir.airbot.BaseServiceVerticle.java

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/**
 * Copyright (c) 2017 Andrea Di Giorgi
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package com.github.ithildir.airbot;

import io.vertx.config.ConfigRetriever;
import io.vertx.core.AbstractVerticle;
import io.vertx.core.Future;
import io.vertx.core.eventbus.MessageConsumer;
import io.vertx.core.json.JsonObject;
import io.vertx.serviceproxy.ProxyHelper;

/**
 * @author Andrea Di Giorgi
 */
public abstract class BaseServiceVerticle<T> extends AbstractVerticle {

    @Override
    public void start(Future<Void> startFuture) throws Exception {
        ConfigRetriever configRetriever = ConfigRetriever.create(vertx);

        configRetriever.getConfig(asyncResult -> {
            if (asyncResult.failed()) {
                startFuture.fail(asyncResult.cause());

                return;
            }

            JsonObject configJsonObject = asyncResult.result();

            Future<Void> future = start(configJsonObject);

            future.setHandler(startFuture);
        });
    }

    @Override
    public void stop() throws Exception {
        ProxyHelper.unregisterService(_messageConsumer);
    }

    protected abstract String getAddress();

    protected abstract T getServiceImpl(JsonObject configJsonObject);

    protected abstract Class<T> getServiceInterface();

    protected Future<Void> start(JsonObject configJsonObject) {
        _messageConsumer = ProxyHelper.registerService(getServiceInterface(), vertx,
                getServiceImpl(configJsonObject), getAddress());

        return Future.succeededFuture();
    }

    private MessageConsumer<JsonObject> _messageConsumer;

}