io.fabric8.quickstarts.camel.Application.java Source code

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Here is the source code for io.fabric8.quickstarts.camel.Application.java

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/*
 * Copyright 2005-2016 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.fabric8.quickstarts.camel;

import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.servlet.CamelHttpTransportServlet;
import org.apache.camel.model.rest.RestBindingMode;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.boot.web.support.SpringBootServletInitializer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ImportResource;
import org.springframework.stereotype.Component;

@SpringBootApplication
@ImportResource({ "classpath:spring/camel-context.xml" })
public class Application extends SpringBootServletInitializer {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

    @Bean
    ServletRegistrationBean servletRegistrationBean() {
        ServletRegistrationBean servlet = new ServletRegistrationBean(new CamelHttpTransportServlet(),
                "/camel-rest-sql/*");
        servlet.setName("CamelServlet");
        return servlet;
    }

    @Component
    class RestApi extends RouteBuilder {

        @Override
        public void configure() {
            restConfiguration().contextPath("/camel-rest-sql").apiContextPath("/api-doc")
                    .apiProperty("api.title", "Camel REST API").apiProperty("api.version", "1.0")
                    .apiProperty("cors", "true").apiContextRouteId("doc-api").component("servlet")
                    .bindingMode(RestBindingMode.json);

            rest("/books").description("Books REST service").get("/").description("The list of all the books")
                    .route().routeId("books-api")
                    .to("sql:select distinct description from orders?" + "dataSource=dataSource&"
                            + "outputClass=io.fabric8.quickstarts.camel.Book")
                    .endRest().get("order/{id}").description("Details of an order by id").route()
                    .routeId("order-api")
                    .to("sql:select * from orders where id = :#${header.id}?"
                            + "dataSource=dataSource&outputType=SelectOne&"
                            + "outputClass=io.fabric8.quickstarts.camel.Order");
        }
    }

    @Component
    class Backend extends RouteBuilder {

        @Override
        public void configure() {
            // A first route generates some orders and queue them in DB
            from("timer:new-order?delay=1s&period={{quickstart.generateOrderPeriod:2s}}").routeId("generate-order")
                    .bean("orderService", "generateOrder")
                    .to("sql:insert into orders (id, item, amount, description, processed) values "
                            + "(:#${body.id} , :#${body.item}, :#${body.amount}, :#${body.description}, false)?"
                            + "dataSource=dataSource")
                    .log("Inserted new order ${body.id}");

            // A second route polls the DB for new orders and processes them
            from("sql:select * from orders where processed = false?"
                    + "consumer.onConsume=update orders set processed = true where id = :#id&"
                    + "consumer.delay={{quickstart.processOrderPeriod:5s}}&" + "dataSource=dataSource")
                            .routeId("process-order").bean("orderService", "rowToOrder")
                            .log("Processed order #id ${body.id} with ${body.amount} copies of the ${body.description} book");
        }
    }
}