added decorators default config files

dd-java-agent/src/main/resources/dd-trace-decorators.yaml

@@ -0,0 +1,17 @@
+# Decorators are used to add extra information to span
+# Could be DBServiceDecorator, MapperDecorator or HTTPServiceDecorator
+decorators:
+  - type: HTTP
+    componentName: java-web-servlet
+  - type: HTTP
+    componentName: java-okhttp
+    desiredServiceName: http-client
+  - type: DB
+    componentName: java-mongo
+    desiredServiceName: mongo
+  - type: DB
+    componentName: java-jdbc
+    desiredServiceName: jdbc
+  - type: HTTP
+    componentName: java-aws-sdk
+    desiredServiceName: aws-client

dd-trace/src/main/resources/dd-trace-decorators.yaml

@@ -0,0 +1,11 @@
+# Decorators are used to add extra information to span
+# Could be DBServiceDecorator, MapperDecorator or HTTPServiceDecorator
+decorators:
+  # This span decorator leverages HTTP tags such as the URL requested
+  - type: HTTP
+    componentName: http
+    desiredServiceName: unnamed-java-http
+  # This span decorator leverages DB tags such as the statement requested
+  - type: DB
+    componentName: db
+    desiredServiceName: unnamed-java-db

dd-trace/src/test/resources/dd-trace-decorators.yaml

@@ -0,0 +1,4 @@
+decorators:
+  - type: HTTP
+    componentName: hello
+    desiredServiceName: world