Custom metadata in Spring traces (#6)

* Adding Spring modules for X-Ray.

* Adding POM description

* Fixing issues highlighted from PR #1

* Removing GPG maven plugin override

* Reformatting code

* Homologizing logging declarations

* abstracting spring version to property and removing SLF4J dependency

* referencing parent version for module version

* removing redundant groupId from POM

* adding newline at EOF

* Incorporating feedback from PR #1

* Adding newline at EOF

* updating POMs

* Adding module into main pom

* Removing beginSegment() per comments on PR #1

* Bumping version to 1.3.0 for release of Spring integration

* Instating the ability for developers to override generateMetadata to create custom metadata outside of the base metadata provoided by XRayInterceptorUtils.generateMetadata.

Author: andrewpowell

aws-xray-recorder-sdk-spring/src/main/java/com/amazonaws/xray/spring/aop/AbstractXRayInterceptor.java

@@ -11,6 +11,7 @@
 import org.aspectj.lang.annotation.Around;
 import org.aspectj.lang.annotation.Pointcut;
 
+import java.util.Map;
 import java.util.Optional;
 
 import static com.amazonaws.xray.AWSXRay.getCurrentSegmentOptional;
@@ -46,7 +47,7 @@ public Object traceAroundMethods(ProceedingJoinPoint pjp) throws Throwable {
     protected Object processXRayTrace(ProceedingJoinPoint pjp) throws Throwable {
         try {
             Subsegment subsegment = AWSXRay.beginSubsegment(pjp.getSignature().getName());
-            subsegment.setMetadata(XRayInterceptorUtils.generateMetadata(pjp, subsegment));
+            subsegment.setMetadata(generateMetadata(pjp, subsegment));
             return XRayInterceptorUtils.conditionalProceed(pjp);
         } catch (Exception e) {
             AWSXRay.getCurrentSegment().addException(e);
@@ -91,4 +92,8 @@ public Object traceAroundRepositoryMethods(ProceedingJoinPoint pjp) throws Throw
         }
     }
 
+    protected Map<String, Map<String, Object>> generateMetadata(ProceedingJoinPoint pjp, Subsegment subsegment) {
+        return XRayInterceptorUtils.generateMetadata(pjp, subsegment);
+    }
+
 }