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14 changed files with 208 additions and 17 deletions
+1 -1
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@@ -6,7 +6,7 @@
<parent>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-openfeign</artifactId>
<version>3.1.2-SNAPSHOT</version>
<version>3.1.2</version>
</parent>
<artifactId>spring-cloud-openfeign-docs</artifactId>
<packaging>jar</packaging>
+1
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@@ -2,6 +2,7 @@
|Name | Default | Description
|feign.autoconfiguration.jackson.enabled | `false` | If true, PageJacksonModule and SortJacksonModule bean will be provided for Jackson page decoding.
|feign.circuitbreaker.alphanumeric-ids.enabled | `false` | If true, Circuit Breaker ids will only contain alphanumeric characters to allow for configuration via configuration properties.
|feign.circuitbreaker.enabled | `false` | If true, an OpenFeign client will be wrapped with a Spring Cloud CircuitBreaker circuit breaker.
|feign.circuitbreaker.group.enabled | `false` | If true, an OpenFeign client will be wrapped with a Spring Cloud CircuitBreaker circuit breaker with with group.
|feign.client.config | |
@@ -372,6 +372,47 @@ public class FooConfiguration {
To enable Spring Cloud CircuitBreaker group set the `feign.circuitbreaker.group.enabled` property to `true` (by default `false`).
[[spring-clou-feign-circuitbreaker-configurationproperties]]
=== Configuring CircuitBreakers With Configuration Properties
You can configure CircuitBreakers via configuration properties. To do set
`feign.circuitbreaker.alphanumeric-ids.enabled` to `true`. Since
you cannot use characters like `#`, `(`, `)` `,` in configuration property names we need to
change the naming convention for the ids of the circuit breakers generated by OpenFeign. The above
property will do this for you.
For example, if you had this Feign client
[source,java,indent=0]
----
@FeignClienturl = "http://localhost:8080")
public interface DemoClient {
@GetMapping("demo")
String getDemo();
}
----
You could configure it using configuration properties by doing the following
[source,yaml,indent=0]
----
feign:
circuitbreaker:
enabled: true
alphanumeric-ids:
enabled: true
resilience4j:
circuitbreaker:
instances:
DemoClientgetDemo:
minimumNumberOfCalls: 69
timelimiter:
instances:
DemoClientgetDemo:
timeoutDuration: 10s
----
[[spring-cloud-feign-circuitbreaker-fallback]]
=== Feign Spring Cloud CircuitBreaker Fallbacks
+3 -3
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@@ -4,14 +4,14 @@
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>spring-cloud-openfeign</artifactId>
<version>3.1.2-SNAPSHOT</version>
<version>3.1.2</version>
<packaging>pom</packaging>
<name>Spring Cloud OpenFeign</name>
<description>Spring Cloud OpenFeign</description>
<parent>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-build</artifactId>
<version>3.1.2-SNAPSHOT</version>
<version>3.1.2</version>
<relativePath/>
</parent>
<scm>
@@ -26,7 +26,7 @@
<properties>
<main.basedir>${basedir}</main.basedir>
<jackson.version>2.11.3</jackson.version>
<spring-cloud-commons.version>3.1.2-SNAPSHOT</spring-cloud-commons.version>
<spring-cloud-commons.version>3.1.2</spring-cloud-commons.version>
<!-- Plugin versions -->
<maven-eclipse-plugin.version>2.10</maven-eclipse-plugin.version>
+1 -1
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@@ -6,7 +6,7 @@
<parent>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-openfeign</artifactId>
<version>3.1.2-SNAPSHOT</version>
<version>3.1.2</version>
<relativePath>..</relativePath> <!-- lookup parent from repository -->
</parent>
<artifactId>spring-cloud-openfeign-core</artifactId>
@@ -166,10 +166,19 @@ public class FeignAutoConfiguration {
@Bean
@ConditionalOnMissingBean(CircuitBreakerNameResolver.class)
@ConditionalOnProperty(value = "feign.circuitbreaker.alphanumeric-ids.enabled", havingValue = "false",
matchIfMissing = true)
public CircuitBreakerNameResolver circuitBreakerNameResolver() {
return new DefaultCircuitBreakerNameResolver();
}
@Bean
@ConditionalOnMissingBean(CircuitBreakerNameResolver.class)
@ConditionalOnProperty(value = "feign.circuitbreaker.alphanumeric-ids.enabled", havingValue = "true")
public CircuitBreakerNameResolver alphanumericCircuitBreakerNameResolver() {
return new AlphanumericCircuitBreakerNameResolver();
}
@Bean
@ConditionalOnMissingBean
@ConditionalOnBean(CircuitBreakerFactory.class)
@@ -189,6 +198,15 @@ public class FeignAutoConfiguration {
}
static class AlphanumericCircuitBreakerNameResolver extends DefaultCircuitBreakerNameResolver {
@Override
public String resolveCircuitBreakerName(String feignClientName, Target<?> target, Method method) {
return super.resolveCircuitBreakerName(feignClientName, target, method).replaceAll("[^a-zA-Z0-9]", "");
}
}
}
// the following configuration is for alternate feign clients if
@@ -110,8 +110,9 @@ public class FeignBlockingLoadBalancerClient implements Client {
}
String reconstructedUrl = loadBalancerClient.reconstructURI(instance, originalUri).toString();
Request newRequest = buildRequest(request, reconstructedUrl);
LoadBalancerProperties loadBalancerProperties = loadBalancerClientFactory.getProperties(serviceId);
return executeWithLoadBalancerLifecycleProcessing(delegate, options, newRequest, lbRequest, lbResponse,
supportedLifecycleProcessors);
supportedLifecycleProcessors, loadBalancerProperties.isUseRawStatusCodeInResponseData());
}
protected Request buildRequest(Request request, String reconstructedUrl) {
@@ -50,14 +50,15 @@ final class LoadBalancerUtils {
static Response executeWithLoadBalancerLifecycleProcessing(Client feignClient, Request.Options options,
Request feignRequest, org.springframework.cloud.client.loadbalancer.Request lbRequest,
org.springframework.cloud.client.loadbalancer.Response<ServiceInstance> lbResponse,
Set<LoadBalancerLifecycle> supportedLifecycleProcessors, boolean loadBalanced) throws IOException {
Set<LoadBalancerLifecycle> supportedLifecycleProcessors, boolean loadBalanced, boolean useRawStatusCodes)
throws IOException {
supportedLifecycleProcessors.forEach(lifecycle -> lifecycle.onStartRequest(lbRequest, lbResponse));
try {
Response response = feignClient.execute(feignRequest, options);
if (loadBalanced) {
supportedLifecycleProcessors.forEach(
lifecycle -> lifecycle.onComplete(new CompletionContext<>(CompletionContext.Status.SUCCESS,
lbRequest, lbResponse, buildResponseData(response))));
lbRequest, lbResponse, buildResponseData(response, useRawStatusCodes))));
}
return response;
}
@@ -70,9 +71,12 @@ final class LoadBalancerUtils {
}
}
static ResponseData buildResponseData(Response response) {
static ResponseData buildResponseData(Response response, boolean useRawStatusCodes) {
HttpHeaders responseHeaders = new HttpHeaders();
response.headers().forEach((key, value) -> responseHeaders.put(key, new ArrayList<>(value)));
if (useRawStatusCodes) {
return new ResponseData(responseHeaders, null, buildRequestData(response.request()), response.status());
}
return new ResponseData(HttpStatus.resolve(response.status()), responseHeaders, null,
buildRequestData(response.request()));
}
@@ -87,9 +91,9 @@ final class LoadBalancerUtils {
static Response executeWithLoadBalancerLifecycleProcessing(Client feignClient, Request.Options options,
Request feignRequest, org.springframework.cloud.client.loadbalancer.Request lbRequest,
org.springframework.cloud.client.loadbalancer.Response<ServiceInstance> lbResponse,
Set<LoadBalancerLifecycle> supportedLifecycleProcessors) throws IOException {
Set<LoadBalancerLifecycle> supportedLifecycleProcessors, boolean useRawStatusCodes) throws IOException {
return executeWithLoadBalancerLifecycleProcessing(feignClient, options, feignRequest, lbRequest, lbResponse,
supportedLifecycleProcessors, true);
supportedLifecycleProcessors, true, useRawStatusCodes);
}
}
@@ -163,9 +163,10 @@ public class RetryableFeignBlockingLoadBalancerClient implements Client {
}
org.springframework.cloud.client.loadbalancer.Response<ServiceInstance> lbResponse = new DefaultResponse(
retrievedServiceInstance);
LoadBalancerProperties loadBalancerProperties = loadBalancerClientFactory.getProperties(serviceId);
Response response = LoadBalancerUtils.executeWithLoadBalancerLifecycleProcessing(delegate, options,
feignRequest, lbRequest, lbResponse, supportedLifecycleProcessors,
retrievedServiceInstance != null);
feignRequest, lbRequest, lbResponse, supportedLifecycleProcessors, retrievedServiceInstance != null,
loadBalancerProperties.isUseRawStatusCodeInResponseData());
int responseStatus = response.status();
if (retryPolicy != null && retryPolicy.retryableStatusCode(responseStatus)) {
if (LOG.isDebugEnabled()) {
@@ -14,6 +14,12 @@
"description": "If true, an OpenFeign client will be wrapped with a Spring Cloud CircuitBreaker circuit breaker.",
"defaultValue": "false"
},
{
"name": "feign.circuitbreaker.alphanumeric-ids.enabled",
"type": "java.lang.Boolean",
"description": "If true, Circuit Breaker ids will only contain alphanumeric characters to allow for configuration via configuration properties.",
"defaultValue": "false"
},
{
"name": "feign.circuitbreaker.group.enabled",
"type": "java.lang.Boolean",
@@ -0,0 +1,78 @@
/*
* Copyright 2013-2022 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
*
* https://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 org.springframework.cloud.openfeign.circuitbreaker;
import feign.Target;
import org.junit.jupiter.api.Nested;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.cloud.openfeign.CircuitBreakerNameResolver;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
/**
* @author Ryan Baxter
*/
public class CircuitBreakerAutoConfigurationTests {
@SpringBootTest(classes = CircuitBreakerTests.Application.class,
webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT,
value = { "spring.application.name=springcircuittest", "spring.jmx.enabled=false",
"feign.circuitbreaker.enabled=true" })
@Nested
class DefaultNamingStrategy {
@Autowired
CircuitBreakerNameResolver nameResolver;
@Test
public void assertDefaultNamingStrategy() throws Exception {
Target target = mock(Target.class);
when(target.type()).thenReturn(CircuitBreakerTests.TestClientWithFactory.class);
assertThat(nameResolver.resolveCircuitBreakerName("foo", target,
CircuitBreakerTests.TestClientWithFactory.class.getMethod("getHello")))
.isEqualTo("TestClientWithFactory#getHello()");
}
}
@SpringBootTest(classes = CircuitBreakerTests.Application.class,
webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT,
value = { "spring.application.name=springcircuittest", "spring.jmx.enabled=false",
"feign.circuitbreaker.enabled=true", "feign.circuitbreaker.alphanumeric-ids.enabled=true" })
@Nested
class AlphanumericNamingStrategy {
@Autowired
CircuitBreakerNameResolver nameResolver;
@Test
public void assertAlphanumericNamingStrategy() throws Exception {
Target target = mock(Target.class);
when(target.type()).thenReturn(CircuitBreakerTests.TestClientWithFactory.class);
assertThat(nameResolver.resolveCircuitBreakerName("foo", target,
CircuitBreakerTests.TestClientWithFactory.class.getMethod("getHello")))
.isEqualTo("TestClientWithFactorygetHello");
}
}
}
@@ -78,7 +78,9 @@ import static org.junit.jupiter.api.Assumptions.assumeTrue;
* @author Olga Maciaszek-Sharma
* @author Szymon Linowski
* @author Sam Kruglov
*/
* @author Bhavya Agrawal
**/
class SpringMvcContractTests {
private static final Class<?> EXECUTABLE_TYPE;
@@ -171,6 +173,39 @@ class SpringMvcContractTests {
assertThat(data.indexToName().get(0).iterator().next()).isEqualTo("id");
}
@Test
void testProcessAnnotations_SimpleNoPath() throws Exception {
Method method = TestTemplate_Simple.class.getDeclaredMethod("getTest");
MethodMetadata data = contract.parseAndValidateMetadata(method.getDeclaringClass(), method);
assertThat(data.template().url()).isEqualTo("/");
assertThat(data.template().method()).isEqualTo("GET");
assertThat(data.template().headers().get("Accept").iterator().next())
.isEqualTo(MediaType.APPLICATION_JSON_VALUE);
}
@Test
void testProcessAnnotations_SimplePathIsOnlyASlash() throws Exception {
Method method = TestTemplate_Simple.class.getDeclaredMethod("getSlashPath", String.class);
MethodMetadata data = contract.parseAndValidateMetadata(method.getDeclaringClass(), method);
assertThat(data.template().url()).isEqualTo("/?id=" + "{id}");
assertThat(data.template().method()).isEqualTo("GET");
assertThat(data.template().headers().get("Accept").iterator().next())
.isEqualTo(MediaType.APPLICATION_JSON_VALUE);
}
@Test
void testProcessAnnotations_MissingLeadingSlashInPath() throws Exception {
Method method = TestTemplate_Simple.class.getDeclaredMethod("getTestNoLeadingSlash", String.class);
MethodMetadata data = contract.parseAndValidateMetadata(method.getDeclaringClass(), method);
assertThat(data.template().url()).isEqualTo("/test?name=" + "{name}");
assertThat(data.template().method()).isEqualTo("GET");
assertThat(data.template().headers().get("Accept").iterator().next())
.isEqualTo(MediaType.APPLICATION_JSON_VALUE);
}
@Test
void testProcessAnnotations_SimpleGetMapping() throws Exception {
Method method = TestTemplate_Simple.class.getDeclaredMethod("getMappingTest", String.class);
@@ -616,6 +651,12 @@ class SpringMvcContractTests {
@PostMapping(produces = MediaType.APPLICATION_JSON_VALUE)
TestObject postMappingTest(@RequestBody TestObject object);
@GetMapping(value = "/", produces = MediaType.APPLICATION_JSON_VALUE)
ResponseEntity<TestObject> getSlashPath(@RequestParam("id") String id);
@GetMapping(path = "test", produces = MediaType.APPLICATION_JSON_VALUE)
ResponseEntity<TestObject> getTestNoLeadingSlash(@RequestParam("name") String name);
}
@RequestMapping("/prepend/{classId}")
+2 -2
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@@ -6,11 +6,11 @@
<parent>
<artifactId>spring-cloud-dependencies-parent</artifactId>
<groupId>org.springframework.cloud</groupId>
<version>3.1.2-SNAPSHOT</version>
<version>3.1.2</version>
<relativePath/>
</parent>
<artifactId>spring-cloud-openfeign-dependencies</artifactId>
<version>3.1.2-SNAPSHOT</version>
<version>3.1.2</version>
<packaging>pom</packaging>
<name>spring-cloud-openfeign-dependencies</name>
<description>Spring Cloud OpenFeign Dependencies</description>
+1 -1
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@@ -5,7 +5,7 @@
<parent>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-openfeign</artifactId>
<version>3.1.2-SNAPSHOT</version>
<version>3.1.2</version>
<relativePath>..</relativePath>
</parent>
<artifactId>spring-cloud-starter-openfeign</artifactId>