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BAEL-1174: A Quick Guide to Spring Cloud Consul: Changes after senior code review

This commit is contained in:
Jose Carvajal 2017-12-04 08:53:58 +01:00
parent 1f7572884b
commit 059e66da30
8 changed files with 103 additions and 125 deletions
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45
spring-cloud/spring-cloud-consul/src/main/java/com/baeldung/spring/cloud/consul/discovery/DiscoveryClientApplication.java
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@ -1,59 +1,16 @@
package com.baeldung.spring.cloud.consul.discovery;
import java.net.URI;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.context.annotation.Bean;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
@SpringBootApplication
@EnableDiscoveryClient
@RestController
public class DiscoveryClientApplication {
@Bean
public RestTemplate restTemplate() {
return new RestTemplate();
}
@Autowired
private DiscoveryClient discoveryClient;
@GetMapping("/discoveryClient")
public String home() {
return restTemplate().getForEntity(serviceUrl().resolve("/ping"), String.class)
.getBody();
}
@GetMapping("/ping")
public String ping() {
return "pong";
}
@RequestMapping("/my-health-check")
public ResponseEntity<String> myCustomCheck() {
return new ResponseEntity<>(HttpStatus.OK);
}
public URI serviceUrl() {
return discoveryClient.getInstances("myApp")
.stream()
.findFirst()
.map(si -> si.getUri())
.orElse(null);
}
public static void main(String[] args) {
new SpringApplicationBuilder(DiscoveryClientApplication.class).web(true)
.run(args);
}
}

50
spring-cloud/spring-cloud-consul/src/main/java/com/baeldung/spring/cloud/consul/discovery/DiscoveryClientController.java Normal file
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@ -0,0 +1,50 @@
package com.baeldung.spring.cloud.consul.discovery;
import java.net.URI;
import java.util.Optional;
import javax.naming.ServiceUnavailableException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestClientException;
import org.springframework.web.client.RestTemplate;
@RestController
public class DiscoveryClientController {
@Autowired
private DiscoveryClient discoveryClient;
private final RestTemplate restTemplate = new RestTemplate();
@GetMapping("/discoveryClient")
public String discoveryPing() throws RestClientException, ServiceUnavailableException {
URI service = serviceUrl().map(s -> s.resolve("/ping"))
.orElseThrow(ServiceUnavailableException::new);
return restTemplate.getForEntity(service, String.class)
.getBody();
}
@GetMapping("/ping")
public String ping() {
return "pong";
}
@GetMapping("/my-health-check")
public ResponseEntity<String> myCustomCheck() {
return new ResponseEntity<>(HttpStatus.OK);
}
public Optional<URI> serviceUrl() {
return discoveryClient.getInstances("myApp")
.stream()
.findFirst()
.map(si -> si.getUri());
}
}

15
spring-cloud/spring-cloud-consul/src/main/java/com/baeldung/spring/cloud/consul/health/ServiceDiscoveryApplication.java
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@ -2,24 +2,9 @@ package com.baeldung.spring.cloud.consul.health;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@SpringBootApplication
@RestController
public class ServiceDiscoveryApplication {
@RequestMapping("/my-health-check")
public ResponseEntity<String> myCustomCheck() {
String message = "Testing my healh check function";
return new ResponseEntity<>(message, HttpStatus.FORBIDDEN);
}
@RequestMapping("/ping")
public String ping() {
return "pong";
}
public static void main(String[] args) {
new SpringApplicationBuilder(ServiceDiscoveryApplication.class).web(true)

22
spring-cloud/spring-cloud-consul/src/main/java/com/baeldung/spring/cloud/consul/health/ServiceDiscoveryController.java Normal file
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@ -0,0 +1,22 @@
package com.baeldung.spring.cloud.consul.health;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class ServiceDiscoveryController {
@GetMapping("/ping")
public String ping() {
return "pong";
}
@GetMapping("/my-health-check")
public ResponseEntity<String> myCustomCheck() {
String message = "Testing my healh check function";
return new ResponseEntity<>(message, HttpStatus.FORBIDDEN);
}
}

20
spring-cloud/spring-cloud-consul/src/main/java/com/baeldung/spring/cloud/consul/properties/DistributedPropertiesApplication.java
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@ -1,34 +1,16 @@
package com.baeldung.spring.cloud.consul.properties;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@SpringBootApplication
@RestController
public class DistributedPropertiesApplication {
@Value("${my.prop}")
String value;
@Autowired
private MyProperties properties;
@RequestMapping("/getConfigFromValue")
public String getConfigFromValue() {
return value;
}
@RequestMapping("/getConfigFromProperty")
public String getConfigFromProperty() {
return properties.getProp();
}
public static void main(String[] args) {
new SpringApplicationBuilder(DistributedPropertiesApplication.class).web(true)
.run(args);
}
}

27
spring-cloud/spring-cloud-consul/src/main/java/com/baeldung/spring/cloud/consul/properties/DistributedPropertiesController.java Normal file
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@ -0,0 +1,27 @@
package com.baeldung.spring.cloud.consul.properties;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class DistributedPropertiesController {
@Value("${my.prop}")
String value;
@Autowired
private MyProperties properties;
@GetMapping("/getConfigFromValue")
public String getConfigFromValue() {
return value;
}
@GetMapping("/getConfigFromProperty")
public String getConfigFromProperty() {
return properties.getProp();
}
}

2
spring-cloud/spring-cloud-consul/src/main/java/com/baeldung/spring/cloud/consul/properties/MyProperties.java
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@ -8,6 +8,7 @@ import org.springframework.context.annotation.Configuration;
@Configuration
@ConfigurationProperties("my")
public class MyProperties {
private String prop;
public String getProp() {
@ -17,4 +18,5 @@ public class MyProperties {
public void setProp(String prop) {
this.prop = prop;
}
}

47
spring-cloud/spring-cloud-consul/src/main/java/com/baeldung/spring/cloud/consul/ribbon/RibbonClientApplication.java
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@ -1,47 +0,0 @@
package com.baeldung.spring.cloud.consul.ribbon;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
@SpringBootApplication
@RestController
public class RibbonClientApplication {
@LoadBalanced
@Bean
RestTemplate getRestTemplate() {
return new RestTemplate();
}
@Autowired
RestTemplate restTemplate;
@RequestMapping("/ribbonClient")
public String home() {
return restTemplate.getForObject("http://myApp/ping", String.class);
}
@GetMapping("/ping")
public String ping() {
return "pong";
}
@RequestMapping("/my-health-check")
public ResponseEntity<String> myCustomCheck() {
return new ResponseEntity<>(HttpStatus.OK);
}
public static void main(String[] args) {
new SpringApplicationBuilder(RibbonClientApplication.class).web(true)
.run(args);
}
}