Add log message when gson used

Added code to log a message when gson is used instead of jackson.

Change-Id: I8cbb8ad8461cc364c3419aaa174cef2680c5a672
Issue-ID: POLICY-1428
Signed-off-by: Jim Hahn <jrh3@att.com>

2 files changed, 11 insertions, 0 deletions

diff --git a/gson/pom.xml b/gson/pom.xml
index 81b95497..8f6272a9 100644
--- a/gson/pom.xml
+++ b/gson/pom.xml
@@ -38,6 +38,11 @@
 
     <dependencies>
         <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
             <groupId>org.glassfish.jersey.core</groupId>
             <artifactId>jersey-server</artifactId>
             <version>${jersey.version}</version>
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 d48649ea..a1c54afa 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
@@ -21,6 +21,8 @@
 package org.onap.policy.common.gson;
 
 import com.google.gson.GsonBuilder;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * Provider used to serialize and deserialize policy objects via gson using jackson
@@ -28,6 +30,8 @@ import com.google.gson.GsonBuilder;
  */
 public class JacksonHandler extends GsonMessageBodyHandler {
 
+    public static final Logger logger = LoggerFactory.getLogger(JacksonHandler.class);
+
     /**
      * Constructs the object.
      */
@@ -45,6 +49,8 @@ public class JacksonHandler extends GsonMessageBodyHandler {
                         .registerTypeAdapterFactory(new JacksonMethodAdapterFactory())
                         .setExclusionStrategies(new JacksonExclusionStrategy())
                         .create());
+        
+        logger.info("Using GSON for REST calls");
     }
 
 }