upgrade to netflix feign 7.1.0.

pom.xml

@@ -23,7 +23,7 @@
 		<main.basedir>${basedir}</main.basedir>
 		<archaius.version>0.6.3</archaius.version>
 		<eureka.version>1.1.145</eureka.version>
-		<feign.version>6.1.3</feign.version>
+		<feign.version>7.1.0</feign.version>
 		<hystrix.version>1.4.0-RC5</hystrix.version>
 		<ribbon.version>2.0-RC13</ribbon.version>
 		<zuul.version>1.0.28</zuul.version>
@@ -169,8 +169,17 @@
 					</exclusion>
 				</exclusions>
 			</dependency>
-			<!--<dependency> <groupId>com.netflix.feign</groupId> <artifactId>feign-slf4j</artifactId>
-				<version>${feign.version}</version> </dependency> -->
+			<!-- TODO: remove with feign 8.0.0 -->
+			<dependency>
+				<groupId>com.squareup.dagger</groupId>
+				<artifactId>dagger</artifactId>
+				<version>1.2.2</version>
+			</dependency>
+			<dependency>
+				<groupId>com.netflix.feign</groupId>
+				<artifactId>feign-slf4j</artifactId>
+				<version>${feign.version}</version>
+			</dependency>
 			<dependency>
 				<groupId>com.netflix.hystrix</groupId>
 				<artifactId>hystrix-core</artifactId>

spring-cloud-netflix-core/pom.xml

@@ -67,10 +67,20 @@
 		</dependency>
 		<dependency>
 			<groupId>com.netflix.feign</groupId>
+			<artifactId>feign-slf4j</artifactId>
+			<optional>true</optional>
+		</dependency>
+		<dependency>
+			<groupId>com.netflix.feign</groupId>
 			<artifactId>feign-ribbon</artifactId>
 			<optional>true</optional>
 		</dependency>
 		<dependency>
+			<groupId>com.squareup.dagger</groupId>
+			<artifactId>dagger</artifactId>
+			<optional>true</optional>
+		</dependency>
+		<dependency>
 			<groupId>com.netflix.hystrix</groupId>
 			<artifactId>hystrix-core</artifactId>
 			<optional>true</optional>

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/eureka/EurekaHeartbeatEvent.java

@@ -6,6 +6,8 @@ import org.springframework.context.ApplicationEvent;
 /**
  * Specifically used when eureka is in the parent bootstrap context to relay the DiscoveryHeartbeatEvent to the child.  Avoids stack overflow
  * @author Spencer Gibb
+ *
+ * TODO: create a ParentDiscoveryHeartbeatEvent in s-c-commons rather than eureka, so eureka doesn't leak into zuul (so zuul can be used  with consul for example)
  */
 @SuppressWarnings("serial")
 public class EurekaHeartbeatEvent extends ApplicationEvent {

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

@@ -16,6 +16,7 @@
 
 package org.springframework.cloud.netflix.feign;
 
+import feign.slf4j.Slf4jLogger;
 import org.springframework.boot.autoconfigure.AutoConfigureAfter;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
 import org.springframework.cloud.netflix.archaius.ArchaiusAutoConfiguration;
@@ -52,8 +53,7 @@ public class FeignAutoConfiguration {
 
 	@Bean
 	public Logger feignLogger() {
-		// return new Slf4jLogger(); //TODO pass Client classname in
-		return new Logger.JavaLogger();
+		return new Slf4jLogger();
 	}
 
 	@Bean

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/feign/FeignConfiguration.java

@@ -16,6 +16,7 @@
 
 package org.springframework.cloud.netflix.feign;
 
+import feign.slf4j.Slf4jLogger;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.cloud.netflix.archaius.ConfigurableEnvironmentConfiguration;
 import org.springframework.context.annotation.Configuration;
@@ -95,6 +96,7 @@ public class FeignConfiguration {
 	}
 
 	protected <T> T loadBalance(Feign.Builder builder, Class<T> type, String schemeName) {
+		builder.logger(new Slf4jLogger(type)); //TODO: how to have choice here?
 		if (this.ribbonClient != null) {
 			return builder.client(this.ribbonClient).target(type, schemeName);
 		}