Log which gson style is being used

Different gson providers may be used for REST APIs.  Updated the code
to identify which was being used.

Change-Id: I8ffbda7409142ec728e217a87c9bcba3c34b814b
Issue-ID: POLICY-1428
Signed-off-by: Jim Hahn <jrh3@att.com>

2 files changed, 8 insertions, 2 deletions

diff --git a/gson/src/main/java/org/onap/policy/common/gson/GsonMessageBodyHandler.java b/gson/src/main/java/org/onap/policy/common/gson/GsonMessageBodyHandler.java
index 6906696f..fc8e23ef 100644
--- a/gson/src/main/java/org/onap/policy/common/gson/GsonMessageBodyHandler.java
+++ b/gson/src/main/java/org/onap/policy/common/gson/GsonMessageBodyHandler.java
@@ -36,6 +36,8 @@ import javax.ws.rs.core.MultivaluedMap;
 import javax.ws.rs.ext.MessageBodyReader;
 import javax.ws.rs.ext.MessageBodyWriter;
 import javax.ws.rs.ext.Provider;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * Provider that serializes and de-serializes JSON via gson.
@@ -45,6 +47,8 @@ import javax.ws.rs.ext.Provider;
 @Produces(MediaType.WILDCARD)
 public class GsonMessageBodyHandler implements MessageBodyReader<Object>, MessageBodyWriter<Object> {
 
+    public static final Logger logger = LoggerFactory.getLogger(GsonMessageBodyHandler.class);
+
     /**
      * Object to be used to serialize and de-serialize.
      */
@@ -55,6 +59,8 @@ public class GsonMessageBodyHandler implements MessageBodyReader<Object>, Messag
      */
     public GsonMessageBodyHandler() {
         this(new Gson());
+
+        logger.info("Using GSON for REST calls");
     }
 
     /**
diff --git a/gson/src/main/java/org/onap/policy/common/gson/JacksonHandler.java b/gson/src/main/java/org/onap/policy/common/gson/JacksonHandler.java
index a1c54afa..b2648b0b 100644
--- a/gson/src/main/java/org/onap/policy/common/gson/JacksonHandler.java
+++ b/gson/src/main/java/org/onap/policy/common/gson/JacksonHandler.java
@@ -37,6 +37,8 @@ public class JacksonHandler extends GsonMessageBodyHandler {
      */
     public JacksonHandler() {
         this(new GsonBuilder());
+        
+        logger.info("Using GSON with Jackson behaviors for REST calls");
     }
 
     /**
@@ -49,8 +51,6 @@ public class JacksonHandler extends GsonMessageBodyHandler {
                         .registerTypeAdapterFactory(new JacksonMethodAdapterFactory())
                         .setExclusionStrategies(new JacksonExclusionStrategy())
                         .create());
-        
-        logger.info("Using GSON for REST calls");
     }
 
 }