GreetingVerticle.java

/*
 * Copyright 2017 Red Hat, Inc.
 *
 * Red Hat 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 io.vertx.examples.spring.verticlefactory;

import io.vertx.core.AbstractVerticle;
import io.vertx.core.Future;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;

import static org.springframework.beans.factory.config.ConfigurableBeanFactory.*;

/**
 * @author Thomas Segismont
 */
@Component
// Prototype scope is needed as multiple instances of this verticle will be deployed
@Scope(SCOPE_PROTOTYPE)
public class GreetingVerticle extends AbstractVerticle {
  private static final Logger LOG = LoggerFactory.getLogger(GreetingVerticle.class);

  @Autowired
  Greeter greeter;

  @Override
  public void start(Future<Void> startFuture) throws Exception {
    vertx.createHttpServer().requestHandler(request -> {
      String name = request.getParam("name");
      LOG.info("Got request for name: " + name);
      if (name == null) {
        request.response().setStatusCode(400).end("Missing name");
      } else {
        // It's fine to call the greeter from the event loop as it's not blocking
        request.response().end(greeter.sayHello(name));
      }
    }).listen(8080, ar -> {
      if (ar.succeeded()) {
        LOG.info("GreetingVerticle started: @" + this.hashCode());
        startFuture.complete();
      } else {
        startFuture.fail(ar.cause());
      }
    });
  }
}