consul.Application.java Source code

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Here is the source code for consul.Application.java

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/*
 * Copyright 2013-2015 the original author or authors.
 *
 * 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 consul;

import lombok.extern.slf4j.Slf4j;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.bind.RelaxedPropertyResolver;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.cloud.bus.jackson.SubtypeModule;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.client.loadbalancer.LoadBalancerClient;
import org.springframework.cloud.consul.bus.SimpleRemoteEvent;
import org.springframework.cloud.ui.EnableConsulUi;
import org.springframework.context.ApplicationListener;
import org.springframework.context.annotation.Bean;
import org.springframework.core.env.Environment;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.PostConstruct;

/**
 * @author Spencer Gibb, Kenny Bastani
 */
@SpringBootApplication
@EnableDiscoveryClient
@EnableConsulUi
@RestController
@EnableConfigurationProperties
@Slf4j
public class Application implements ApplicationListener<SimpleRemoteEvent> {

    final Logger logger = LoggerFactory.getLogger(Application.class);

    @Autowired
    private LoadBalancerClient loadBalancer;

    @Autowired
    private DiscoveryClient discoveryClient;

    @Autowired
    private Environment env;

    @Autowired(required = false)
    private RelaxedPropertyResolver resolver;

    @Value("${spring.application.name:consul}")
    private String appName;

    @PostConstruct
    public void init() {
        if (resolver == null) {
            resolver = new RelaxedPropertyResolver(env);
        }
    }

    @RequestMapping("/me")
    public ServiceInstance me() {
        return discoveryClient.getLocalServiceInstance();
    }

    @RequestMapping("/")
    public ServiceInstance lb() {
        return loadBalancer.choose(appName);
    }

    @RequestMapping("/myenv")
    public String env(@RequestParam("prop") String prop) {
        return resolver.getProperty(prop, "Not Found");
    }

    @RequestMapping("/prop")
    public String prop() {
        return sampleProperties().getProp();
    }

    @Bean
    public SubtypeModule sampleSubtypeModule() {
        return new SubtypeModule(SimpleRemoteEvent.class);
    }

    @Bean
    public ConsulProperties sampleProperties() {
        return new ConsulProperties();
    }

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

    @Override
    public void onApplicationEvent(SimpleRemoteEvent event) {
        logger.info("Received event: {}", event);
    }
}