Update SNAPSHOT to 3.1.2

This reverts commit 86a2f28a9e.

.github/workflows/maven.yml

@@ -16,7 +16,7 @@ jobs:
 
     strategy:
       matrix:
-        java: ["17"]
+        java: ["8", "11", "16"]
 
     steps:
       - uses: actions/checkout@v2

.sdkmanrc

@@ -1,3 +1,3 @@
 # Enable auto-env through the sdkman_auto_env config
 # Add key=value pairs of SDKs to use below
-java=17.0.1-tem
+java=8.0.292.hs-adpt

README.adoc

@@ -40,7 +40,8 @@ and binding to the Spring Environment and other Spring programming model idioms.
 
 == Building
 
-:jdkversion: 1.8
+
+:jdkversion: 17
 
 === Basic Compile and Test
 

docs/pom.xml

@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-openfeign</artifactId>
-		<version>4.0.0-M1</version>
+		<version>3.1.2</version>
 	</parent>
 	<artifactId>spring-cloud-openfeign-docs</artifactId>
 	<packaging>jar</packaging>

docs/src/main/asciidoc/_configprops.adoc

@@ -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 |  | 

docs/src/main/asciidoc/spring-cloud-openfeign.adoc

@@ -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

pom.xml

@@ -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>4.0.0-M1</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>4.0.0-M1</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>4.0.0-M1</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>
@@ -64,6 +64,13 @@
 					</additionalConfig>
 				</configuration>
 			</plugin>
+			<plugin>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<configuration>
+					<source>1.8</source>
+					<target>1.8</target>
+				</configuration>
+			</plugin>
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-checkstyle-plugin</artifactId>

spring-cloud-openfeign-core/pom.xml

@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-openfeign</artifactId>
-		<version>4.0.0-M1</version>
+		<version>3.1.2</version>
 		<relativePath>..</relativePath> <!-- lookup parent from repository -->
 	</parent>
 	<artifactId>spring-cloud-openfeign-core</artifactId>

spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/FeignAutoConfiguration.java

@@ -25,6 +25,8 @@ import java.util.Timer;
 import java.util.TimerTask;
 import java.util.concurrent.TimeUnit;
 
+import javax.annotation.PreDestroy;
+
 import com.fasterxml.jackson.databind.Module;
 import feign.Capability;
 import feign.Client;
@@ -34,7 +36,6 @@ import feign.Target;
 import feign.hc5.ApacheHttp5Client;
 import feign.httpclient.ApacheHttpClient;
 import feign.okhttp.OkHttpClient;
-import jakarta.annotation.PreDestroy;
 import okhttp3.ConnectionPool;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
@@ -165,10 +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)
@@ -188,6 +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

spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/FeignCircuitBreakerInvocationHandler.java

@@ -17,6 +17,7 @@
 package org.springframework.cloud.openfeign;
 
 import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.lang.reflect.Proxy;
 import java.util.LinkedHashMap;
@@ -29,6 +30,7 @@ import feign.Target;
 
 import org.springframework.cloud.client.circuitbreaker.CircuitBreaker;
 import org.springframework.cloud.client.circuitbreaker.CircuitBreakerFactory;
+import org.springframework.cloud.client.circuitbreaker.NoFallbackAvailableException;
 import org.springframework.web.context.request.RequestAttributes;
 import org.springframework.web.context.request.RequestContextHolder;
 
@@ -95,15 +97,29 @@ class FeignCircuitBreakerInvocationHandler implements InvocationHandler {
 				try {
 					return this.fallbackMethodMap.get(method).invoke(fallback, args);
 				}
-				catch (Exception e) {
-					throw new IllegalStateException(e);
+				catch (Exception exception) {
+					unwrapAndRethrow(exception);
 				}
+				return null;
 			};
 			return circuitBreaker.run(supplier, fallbackFunction);
 		}
 		return circuitBreaker.run(supplier);
 	}
 
+	private void unwrapAndRethrow(Exception exception) {
+		if (exception instanceof InvocationTargetException || exception instanceof NoFallbackAvailableException) {
+			Throwable underlyingException = exception.getCause();
+			if (underlyingException instanceof RuntimeException) {
+				throw (RuntimeException) underlyingException;
+			}
+			if (underlyingException != null) {
+				throw new IllegalStateException(underlyingException);
+			}
+			throw new IllegalStateException(exception);
+		}
+	}
+
 	private Supplier<Object> asSupplier(final Method method, final Object[] args) {
 		final RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();
 		return () -> {

spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/FeignClientFactoryBean.java

@@ -69,6 +69,7 @@ import org.springframework.util.StringUtils;
  * @author Sam Kruglov
  * @author Jasbir Singh
  * @author Hyeonmin Park
+ * @author Felix Dittrich
  */
 public class FeignClientFactoryBean
 		implements FactoryBean<Object>, InitializingBean, ApplicationContextAware, BeanFactoryAware {
@@ -132,7 +133,6 @@ public class FeignClientFactoryBean
 		// @formatter:on
 
 		configureFeign(context, builder);
-		applyBuildCustomizers(context, builder);
 
 		return builder;
 	}
@@ -374,6 +374,7 @@ public class FeignClientFactoryBean
 		Client client = getOptional(context, Client.class);
 		if (client != null) {
 			builder.client(client);
+			applyBuildCustomizers(context, builder);
 			Targeter targeter = get(context, Targeter.class);
 			return targeter.target(this, builder, context, target);
 		}
@@ -443,6 +444,9 @@ public class FeignClientFactoryBean
 			}
 			builder.client(client);
 		}
+
+		applyBuildCustomizers(context, builder);
+
 		Targeter targeter = get(context, Targeter.class);
 		return (T) targeter.target(this, builder, context, new HardCodedTarget<>(type, name, url));
 	}

spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/clientconfig/HttpClient5FeignConfiguration.java

@@ -23,11 +23,11 @@ import java.security.cert.CertificateException;
 import java.security.cert.X509Certificate;
 import java.util.concurrent.TimeUnit;
 
+import javax.annotation.PreDestroy;
 import javax.net.ssl.SSLContext;
 import javax.net.ssl.TrustManager;
 import javax.net.ssl.X509TrustManager;
 
-import jakarta.annotation.PreDestroy;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hc.client5.http.config.RequestConfig;

spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/clientconfig/HttpClientFeignConfiguration.java

@@ -20,7 +20,8 @@ import java.io.IOException;
 import java.util.Timer;
 import java.util.TimerTask;
 
-import jakarta.annotation.PreDestroy;
+import javax.annotation.PreDestroy;
+
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.http.client.config.RequestConfig;

spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/clientconfig/OkHttpFeignConfiguration.java

@@ -19,7 +19,8 @@ package org.springframework.cloud.openfeign.clientconfig;
 import java.time.Duration;
 import java.util.concurrent.TimeUnit;
 
-import jakarta.annotation.PreDestroy;
+import javax.annotation.PreDestroy;
+
 import okhttp3.ConnectionPool;
 import okhttp3.OkHttpClient;
 

spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/hateoas/WebConvertersCustomizer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2022 the original author or authors.
+ * Copyright 2016-2021 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.

spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/loadbalancer/FeignBlockingLoadBalancerClient.java

@@ -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) {

spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/loadbalancer/LoadBalancerUtils.java

@@ -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);
 	}
 
 }

spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/loadbalancer/RetryableFeignBlockingLoadBalancerClient.java

@@ -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()) {

spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/security/OAuth2FeignRequestInterceptorBuilder.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2022 the original author or authors.
+ * Copyright 2015-2021 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.

spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/support/HttpMessageConverterCustomizer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2022 the original author or authors.
+ * Copyright 2016-2021 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.

spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/support/PageJacksonModule.java

@@ -196,6 +196,21 @@ public class PageJacksonModule extends Module {
 			return delegate.isEmpty();
 		}
 
+		@Override
+		public int hashCode() {
+			return delegate.hashCode();
+		}
+
+		@Override
+		public boolean equals(Object obj) {
+			return delegate.equals(obj);
+		}
+
+		@Override
+		public String toString() {
+			return delegate.toString();
+		}
+
 	}
 
 }

spring-cloud-openfeign-core/src/main/resources/META-INF/additional-spring-configuration-metadata.json

@@ -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",

spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/FeignBuilderCustomizerTests.java

@@ -17,35 +17,56 @@
 package org.springframework.cloud.openfeign;
 
 import java.lang.reflect.Field;
+import java.util.stream.Stream;
 
+import feign.Client;
 import feign.Feign;
 import feign.Logger;
+import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.MethodSource;
+import org.mockito.ArgumentCaptor;
 
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Import;
+import org.springframework.context.annotation.Primary;
 import org.springframework.core.annotation.Order;
 import org.springframework.util.ReflectionUtils;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.doCallRealMethod;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.spy;
 
 /**
  * @author Matt King
  * @author Sam Kruglov
+ * @author Felix Dittrich
+ * @author Olga Maciaszek-Sharma
  */
 class FeignBuilderCustomizerTests {
 
+	private static final Targeter targeterSpy = spy(DefaultTargeter.class);
+
+	private static final Client defaultClient = mock(Client.class);
+
 	@Test
 	void testBuilderCustomizer() {
+		ArgumentCaptor<Feign.Builder> feignBuilderCaptor = ArgumentCaptor.forClass(Feign.Builder.class);
+		doCallRealMethod().when(targeterSpy).target(any(), feignBuilderCaptor.capture(), any(), any());
+
 		AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(
 				FeignBuilderCustomizerTests.SampleConfiguration2.class);
 
 		FeignClientFactoryBean clientFactoryBean = context.getBean(FeignClientFactoryBean.class);
-		FeignContext feignContext = context.getBean(FeignContext.class);
+		clientFactoryBean.getTarget();
 
-		Feign.Builder builder = clientFactoryBean.feign(feignContext);
+		Assertions.assertNotNull(feignBuilderCaptor.getValue());
+		Feign.Builder builder = feignBuilderCaptor.getValue();
 		assertFeignBuilderField(builder, "logLevel", Logger.Level.HEADERS);
 		assertFeignBuilderField(builder, "decode404", true);
 
@@ -62,13 +83,17 @@ class FeignBuilderCustomizerTests {
 
 	@Test
 	void testBuildCustomizerOrdered() {
+		ArgumentCaptor<Feign.Builder> feignBuilderCaptor = ArgumentCaptor.forClass(Feign.Builder.class);
+		doCallRealMethod().when(targeterSpy).target(any(), feignBuilderCaptor.capture(), any(), any());
+
 		AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(
 				FeignBuilderCustomizerTests.SampleConfiguration3.class);
 
 		FeignClientFactoryBean clientFactoryBean = context.getBean(FeignClientFactoryBean.class);
-		FeignContext feignContext = context.getBean(FeignContext.class);
+		clientFactoryBean.getTarget();
 
-		Feign.Builder builder = clientFactoryBean.feign(feignContext);
+		Assertions.assertNotNull(feignBuilderCaptor.getValue());
+		Feign.Builder builder = feignBuilderCaptor.getValue();
 		assertFeignBuilderField(builder, "logLevel", Logger.Level.FULL);
 		assertFeignBuilderField(builder, "decode404", true);
 
@@ -77,15 +102,19 @@ class FeignBuilderCustomizerTests {
 
 	@Test
 	void testBuildCustomizerOrderedWithAdditional() {
+		ArgumentCaptor<Feign.Builder> feignBuilderCaptor = ArgumentCaptor.forClass(Feign.Builder.class);
+		doCallRealMethod().when(targeterSpy).target(any(), feignBuilderCaptor.capture(), any(), any());
+
 		AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(
 				FeignBuilderCustomizerTests.SampleConfiguration3.class);
 
 		FeignClientFactoryBean clientFactoryBean = context.getBean(FeignClientFactoryBean.class);
 		clientFactoryBean.addCustomizer(builder -> builder.logLevel(Logger.Level.BASIC));
 		clientFactoryBean.addCustomizer(Feign.Builder::doNotCloseAfterDecode);
-		FeignContext feignContext = context.getBean(FeignContext.class);
+		clientFactoryBean.getTarget();
 
-		Feign.Builder builder = clientFactoryBean.feign(feignContext);
+		Assertions.assertNotNull(feignBuilderCaptor.getValue());
+		Feign.Builder builder = feignBuilderCaptor.getValue();
 		assertFeignBuilderField(builder, "logLevel", Logger.Level.BASIC);
 		assertFeignBuilderField(builder, "decode404", true);
 		assertFeignBuilderField(builder, "closeAfterDecode", false);
@@ -93,16 +122,41 @@ class FeignBuilderCustomizerTests {
 		context.close();
 	}
 
-	private static FeignClientFactoryBean defaultFeignClientFactoryBean() {
+	@ParameterizedTest(name = "should use custom HttpClient with config: {0}")
+	@MethodSource("testConfiguration")
+	void testBuildCustomizerWithCustomHttpClient(Class configClass) {
+		ArgumentCaptor<Feign.Builder> feignBuilderCaptor = ArgumentCaptor.forClass(Feign.Builder.class);
+		doCallRealMethod().when(targeterSpy).target(any(), feignBuilderCaptor.capture(), any(), any());
+		Client customClientMock = mock(Client.class);
+
+		AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(configClass);
+		FeignClientFactoryBean clientFactoryBean = context.getBean(FeignClientFactoryBean.class);
+		clientFactoryBean.addCustomizer(builder -> builder.client(customClientMock));
+		clientFactoryBean.getTarget();
+
+		Assertions.assertNotNull(feignBuilderCaptor.getValue());
+		Feign.Builder builder = feignBuilderCaptor.getValue();
+		assertFeignBuilderField(builder, "client", customClientMock);
+
+		context.close();
+	}
+
+	private static FeignClientFactoryBean defaultFeignClientFactoryBean(String url) {
 		FeignClientFactoryBean feignClientFactoryBean = new FeignClientFactoryBean();
 		feignClientFactoryBean.setContextId("test");
 		feignClientFactoryBean.setName("test");
 		feignClientFactoryBean.setType(FeignClientFactoryTests.TestType.class);
 		feignClientFactoryBean.setPath("");
-		feignClientFactoryBean.setUrl("http://some.absolute.url");
+		if (url != null) {
+			feignClientFactoryBean.setUrl(url);
+		}
 		return feignClientFactoryBean;
 	}
 
+	private static Stream<Class> testConfiguration() {
+		return Stream.of(SampleConfiguration3.class, LoadBalancedSampleConfiguration.class);
+	}
+
 	@Configuration(proxyBeanMethods = false)
 	@Import(FeignClientsConfiguration.class)
 	protected static class SampleConfiguration2 {
@@ -129,7 +183,12 @@ class FeignBuilderCustomizerTests {
 
 		@Bean
 		FeignClientFactoryBean feignClientFactoryBean() {
-			return defaultFeignClientFactoryBean();
+			return defaultFeignClientFactoryBean("http://some.absolute.url");
+		}
+
+		@Bean
+		Targeter targeter() {
+			return targeterSpy;
 		}
 
 	}
@@ -167,7 +226,29 @@ class FeignBuilderCustomizerTests {
 
 		@Bean
 		FeignClientFactoryBean feignClientFactoryBean() {
-			return defaultFeignClientFactoryBean();
+			return defaultFeignClientFactoryBean("http://some.absolute.url");
+		}
+
+		@Bean
+		Targeter targeter() {
+			return targeterSpy;
+		}
+
+		@Bean
+		Client client() {
+			return defaultClient;
+		}
+
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	@Import(SampleConfiguration3.class)
+	protected static class LoadBalancedSampleConfiguration {
+
+		@Primary
+		@Bean
+		FeignClientFactoryBean feignClientFactoryBean() {
+			return defaultFeignClientFactoryBean(null);
 		}
 
 	}

spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/FeignClientUsingPropertiesTests.java

@@ -32,6 +32,8 @@ import java.util.concurrent.TimeUnit;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
+import javax.servlet.http.HttpServletRequest;
+
 import feign.Capability;
 import feign.Feign;
 import feign.InvocationHandlerFactory;
@@ -45,7 +47,6 @@ import feign.codec.EncodeException;
 import feign.codec.Encoder;
 import feign.codec.ErrorDecoder;
 import feign.micrometer.MicrometerCapability;
-import jakarta.servlet.http.HttpServletRequest;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.condition.DisabledForJreRange;
 import org.junit.jupiter.api.condition.JRE;

spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/FeignHttpClientUrlTestsWithRetryableLoadBalancer.java

@@ -48,9 +48,8 @@ import static org.springframework.boot.test.context.SpringBootTest.WebEnvironmen
  * @author Olga Maciaszek-Sharma
  */
 @SpringBootTest(classes = FeignHttpClientUrlTestsWithRetryableLoadBalancer.TestConfig.class,
-		webEnvironment = DEFINED_PORT,
-		value = { "spring.application.name=feignclienturlwithretryableloadbalancertest", "feign.hystrix.enabled=false",
-				"feign.okhttp.enabled=false" })
+		webEnvironment = DEFINED_PORT, value = { "spring.application.name=feignclienturlwithretryableloadbalancertest",
+				"feign.hystrix.enabled=false", "feign.okhttp.enabled=false" })
 @DirtiesContext
 class FeignHttpClientUrlTestsWithRetryableLoadBalancer {
 

spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/circuitbreaker/AsyncCircuitBreakerTest.java

@@ -21,8 +21,9 @@ import java.util.Objects;
 import java.util.UUID;
 import java.util.function.Function;
 
+import javax.servlet.http.HttpServletRequest;
+
 import feign.RequestInterceptor;
-import jakarta.servlet.http.HttpServletRequest;
 import org.junit.jupiter.api.Test;
 
 import org.springframework.beans.factory.ObjectProvider;

spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/circuitbreaker/CircuitBreakerAutoConfigurationTests.java

@@ -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");
+		}
+
+	}
+
+}

spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/circuitbreaker/CircuitBreakerTests.java

@@ -16,6 +16,7 @@
 
 package org.springframework.cloud.openfeign.circuitbreaker;
 
+import java.io.IOException;
 import java.util.function.Function;
 
 import org.apache.commons.logging.Log;
@@ -47,13 +48,13 @@ import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RestController;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
 
 /**
  * @author Spencer Gibb
  */
-@SpringBootTest(classes = CircuitBreakerTests.Application.class, webEnvironment = WebEnvironment.DEFINED_PORT,
-		value = { "spring.application.name=springcircuittest", "spring.jmx.enabled=false",
-				"feign.circuitbreaker.enabled=true" })
+@SpringBootTest(classes = CircuitBreakerTests.Application.class, webEnvironment = WebEnvironment.DEFINED_PORT, value = {
+		"spring.application.name=springcircuittest", "spring.jmx.enabled=false", "feign.circuitbreaker.enabled=true" })
 @DirtiesContext
 class CircuitBreakerTests {
 
@@ -63,6 +64,9 @@ class CircuitBreakerTests {
 	@Autowired
 	TestClient testClient;
 
+	@Autowired
+	ExceptionClient exceptionClient;
+
 	@Autowired
 	TestClientWithFactory testClientWithFactory;
 
@@ -109,6 +113,17 @@ class CircuitBreakerTests {
 		assertThat(testClientWithFactory.getException()).isEqualTo("Fixed response");
 	}
 
+	@Test
+	void testRuntimeExceptionUnwrapped() {
+		assertThatExceptionOfType(UnsupportedOperationException.class)
+				.isThrownBy(() -> exceptionClient.getRuntimeException());
+	}
+
+	@Test
+	void testCheckedExceptionWrapped() {
+		assertThatExceptionOfType(IllegalStateException.class).isThrownBy(() -> exceptionClient.getCheckedException());
+	}
+
 	@FeignClient(name = "test", url = "http://localhost:${server.port}/", fallback = Fallback.class)
 	protected interface TestClient {
 
@@ -120,6 +135,18 @@ class CircuitBreakerTests {
 
 	}
 
+	@FeignClient(name = "exceptionClient", url = "http://localhost:${server.port}/",
+			fallbackFactory = ExceptionThrowingFallbackFactory.class)
+	protected interface ExceptionClient {
+
+		@GetMapping("/runtimeException")
+		Hello getRuntimeException();
+
+		@GetMapping("/runtimeException")
+		Hello getCheckedException() throws IOException;
+
+	}
+
 	@Component
 	static class Fallback implements TestClient {
 
@@ -157,6 +184,25 @@ class CircuitBreakerTests {
 
 	}
 
+	static class ExceptionThrowingFallbackFactory implements FallbackFactory<ExceptionClient> {
+
+		@Override
+		public ExceptionClient create(Throwable cause) {
+			return new ExceptionClient() {
+				@Override
+				public Hello getRuntimeException() {
+					throw new UnsupportedOperationException("Not implemented!");
+				}
+
+				@Override
+				public Hello getCheckedException() throws IOException {
+					throw new IOException();
+				}
+			};
+		}
+
+	}
+
 	static class FallbackWithFactory implements TestClientWithFactory {
 
 		@Override
@@ -174,7 +220,7 @@ class CircuitBreakerTests {
 	@Configuration(proxyBeanMethods = false)
 	@EnableAutoConfiguration
 	@RestController
-	@EnableFeignClients(clients = { TestClient.class, TestClientWithFactory.class })
+	@EnableFeignClients(clients = { TestClient.class, TestClientWithFactory.class, ExceptionClient.class })
 	@Import(NoSecurityConfiguration.class)
 	protected static class Application implements TestClient {
 
@@ -226,6 +272,11 @@ class CircuitBreakerTests {
 			return new TestFallbackFactory();
 		}
 
+		@Bean
+		ExceptionThrowingFallbackFactory exceptionThrowingFallbackFactory() {
+			return new ExceptionThrowingFallbackFactory();
+		}
+
 	}
 
 }

spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/loadbalancer/FeignBlockingLoadBalancerClientTests.java

@@ -65,9 +65,9 @@ import static org.mockito.Mockito.when;
  * Commons project, so here we are only testing the interactions between
  * {@link FeignBlockingLoadBalancerClient} and its delegates.
  *
- * @author Olga Maciaszek-Sharma
  * @see <a href=
  * "https://github.com/spring-cloud/spring-cloud-commons/blob/main/spring-cloud-loadbalancer/src/test/java/org/springframework/cloud/loadbalancer/blocking/client/BlockingLoadBalancerClientTests.java">BlockingLoadBalancerClientTests</a>
+ * @author Olga Maciaszek-Sharma
  */
 @ExtendWith(MockitoExtension.class)
 class FeignBlockingLoadBalancerClientTests {

spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/loadbalancer/RetryableFeignBlockingLoadBalancerClientTests.java

@@ -69,9 +69,9 @@ import static org.mockito.Mockito.when;
  * Commons project, so here we are only testing the interactions between
  * {@link RetryableFeignBlockingLoadBalancerClient} and its delegates.
  *
- * @author Olga Maciaszek-Sharma
  * @see <a href=
  * "https://github.com/spring-cloud/spring-cloud-commons/blob/main/spring-cloud-loadbalancer/src/test/java/org/springframework/cloud/loadbalancer/blocking/client/BlockingLoadBalancerClientTests.java">BlockingLoadBalancerClientTests</a>
+ * @author Olga Maciaszek-Sharma
  */
 @ExtendWith(MockitoExtension.class)
 class RetryableFeignBlockingLoadBalancerClientTests {

spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/security/AccessTokenProviderWithLoadBalancerInterceptorTests.java

@@ -16,7 +16,8 @@
 
 package org.springframework.cloud.openfeign.security;
 
-import jakarta.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletRequest;
+
 import org.junit.jupiter.api.Test;
 
 import org.springframework.beans.factory.annotation.Autowired;

spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/security/AccessTokenProviderWithoutLoadBalancerInterceptorTests.java

@@ -16,7 +16,8 @@
 
 package org.springframework.cloud.openfeign.security;
 
-import jakarta.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletRequest;
+
 import org.junit.jupiter.api.Test;
 
 import org.springframework.beans.factory.annotation.Autowired;

spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/support/SpringMvcContractTests.java

@@ -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}")

spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/valid/ValidFeignClientTests.java

@@ -32,12 +32,13 @@ import java.util.Optional;
 import java.util.UUID;
 import java.util.stream.Collectors;
 
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.Part;
+
 import feign.Client;
 import feign.Logger;
 import feign.RequestInterceptor;
 import feign.codec.EncodeException;
-import jakarta.servlet.http.HttpServletRequest;
-import jakarta.servlet.http.Part;
 import org.junit.jupiter.api.Test;
 
 import org.springframework.beans.factory.annotation.Autowired;

spring-cloud-openfeign-dependencies/pom.xml

@@ -6,11 +6,11 @@
 	<parent>
 		<artifactId>spring-cloud-dependencies-parent</artifactId>
 		<groupId>org.springframework.cloud</groupId>
-		<version>4.0.0-M1</version>
+		<version>3.1.2</version>
 		<relativePath/>
 	</parent>
 	<artifactId>spring-cloud-openfeign-dependencies</artifactId>
-	<version>4.0.0-M1</version>
+	<version>3.1.2</version>
 	<packaging>pom</packaging>
 	<name>spring-cloud-openfeign-dependencies</name>
 	<description>Spring Cloud OpenFeign Dependencies</description>

spring-cloud-starter-openfeign/pom.xml

@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-openfeign</artifactId>
-		<version>4.0.0-M1</version>
+		<version>3.1.2</version>
 		<relativePath>..</relativePath>
 	</parent>
 	<artifactId>spring-cloud-starter-openfeign</artifactId>