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

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Here is the source code for com.github.ithildir.airbot.AirBotVerticle.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 com.github.ithildir.airbot.constants.ConfigKeys;
import com.github.ithildir.airbot.server.SingleUserAuthProvider;
import com.github.ithildir.airbot.server.api.ai.AirQualityApiAiFulfillmentBuilder;
import com.github.ithildir.airbot.server.api.ai.ApiAiHandler;
import com.github.ithildir.airbot.service.GeoService;
import com.github.ithildir.airbot.service.MeasurementService;
import com.github.ithildir.airbot.service.UserService;
import com.github.ithildir.airbot.util.AirQualityMessageBuilder;

import io.vertx.config.ConfigRetriever;
import io.vertx.core.AbstractVerticle;
import io.vertx.core.CompositeFuture;
import io.vertx.core.Future;
import io.vertx.core.Verticle;
import io.vertx.core.http.HttpMethod;
import io.vertx.core.http.HttpServer;
import io.vertx.core.json.JsonObject;
import io.vertx.core.logging.Logger;
import io.vertx.core.logging.LoggerFactory;
import io.vertx.ext.auth.AuthProvider;
import io.vertx.ext.web.Route;
import io.vertx.ext.web.Router;
import io.vertx.ext.web.handler.BasicAuthHandler;
import io.vertx.ext.web.handler.BodyHandler;

import java.util.HashMap;
import java.util.Map;

/**
 * @author Andrea Di Giorgi
 */
public class AirBotVerticle extends AbstractVerticle {

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

        Future<JsonObject> configFuture = ConfigRetriever.getConfigAsFuture(configRetriever);

        Future<HttpServer> httpServerFuture = configFuture.compose(this::_startHttpServer);

        CompositeFuture compositeFuture = CompositeFuture.all(
                _deployVerticle(AirNowMeasurementServiceVerticle.class), _deployVerticle(GeoServiceVerticle.class),
                _deployVerticle(UserServiceVerticle.class), _deployVerticle(WaqiMeasurementServiceVerticle.class),
                httpServerFuture);

        compositeFuture.setHandler(asyncResult -> {
            if (asyncResult.failed()) {
                startFuture.fail(asyncResult.cause());

                return;
            }

            if (_logger.isInfoEnabled()) {
                _logger.info("AirBot started succesfully");
            }

            startFuture.complete();
        });
    }

    private void _addHttpRouteApiAi(Router router) {
        Route route = router.route(HttpMethod.POST, "/apiai");

        route.consumes("application/json");
        route.produces("application/json");

        GeoService geoService = GeoService.getInstance(vertx);

        Map<String, MeasurementService> measurementServices = new HashMap<>();

        measurementServices.put("US", MeasurementService.getInstance(vertx, "US"));
        measurementServices.put(null, MeasurementService.getInstance(vertx, null));

        AirQualityMessageBuilder airQualityMessageBuilder = new AirQualityMessageBuilder(measurementServices);

        UserService userService = UserService.getInstance(vertx);

        route.handler(new ApiAiHandler(
                new AirQualityApiAiFulfillmentBuilder(airQualityMessageBuilder, geoService, userService)));
    }

    private Future<String> _deployVerticle(Class<? extends Verticle> clazz) {
        Future<String> future = Future.future();

        vertx.deployVerticle(clazz.getName(), future);

        return future;
    }

    private Future<HttpServer> _startHttpServer(JsonObject configJsonObject) {
        Future<HttpServer> future = Future.future();

        HttpServer httpServer = vertx.createHttpServer();

        Router router = Router.router(vertx);

        Route authHandlerRoute = router.route();

        String username = configJsonObject.getString(ConfigKeys.USERNAME);
        String password = configJsonObject.getString(ConfigKeys.PASSWORD);

        AuthProvider authProvider = new SingleUserAuthProvider(username, password);

        authHandlerRoute.handler(BasicAuthHandler.create(authProvider));

        Route bodyHandlerRoute = router.route();

        bodyHandlerRoute.handler(BodyHandler.create());

        _addHttpRouteApiAi(router);

        httpServer.requestHandler(router::accept);

        int port = configJsonObject.getInteger(ConfigKeys.PORT, _DEFAULT_PORT);

        httpServer.listen(port, future);

        return future;
    }

    private static final int _DEFAULT_PORT = 8080;

    private static Logger _logger = LoggerFactory.getLogger(AirBotVerticle.class);

}