Adding basic logging to CDS Simulator

1) Adding log statements to capture actions taken by CDS Simulator.
2) Fixing the way CDSRequest input is read from a String. StandardCoder
decode method cannot directly decode from a String to protobuf type.

Change-Id: I597c64ffb095f6a518b0b6c67c1617ca789ad7d6
Issue-ID: POLICY-2828
Signed-off-by: a.sreekumar <ajith.sreekumar@bell.ca>

1 files changed, 9 insertions, 0 deletions

diff --git a/models-interactions/model-simulators/src/main/java/org/onap/policy/simulators/CdsSimulator.java b/models-interactions/model-simulators/src/main/java/org/onap/policy/simulators/CdsSimulator.java
index 3418780bc..6c505b3d9 100644
--- a/models-interactions/model-simulators/src/main/java/org/onap/policy/simulators/CdsSimulator.java
+++ b/models-interactions/model-simulators/src/main/java/org/onap/policy/simulators/CdsSimulator.java
@@ -39,8 +39,13 @@ import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceIn
 import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceOutput;
 import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceOutput.Builder;
 import org.onap.policy.common.utils.resources.ResourceUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class CdsSimulator {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(CdsSimulator.class);
+
     @Getter
     private final int port;
 
@@ -83,6 +88,7 @@ public class CdsSimulator {
 
                     @Override
                     public void onNext(final ExecutionServiceInput executionServiceInput) {
+                        LOGGER.info("Received request input to CDS: {}", executionServiceInput);
                         try {
                             String responseString = getResponseString(executionServiceInput, countOfSuccesfulEvents);
                             Builder builder = ExecutionServiceOutput.newBuilder();
@@ -141,11 +147,14 @@ public class CdsSimulator {
         } else {
             resourceName = resourceName + ".json";
         }
+        LOGGER.info("Fetching response from {}", resourceName);
         String responseString = ResourceUtils.getResourceAsString(resourceLocation + resourceName);
         if (responseString == null) {
+            LOGGER.info("Expected response file {} not found in {}", resourceName, resourceLocation);
             responseString = ResourceUtils.getResourceAsString(resourceLocation
                 + "DefaultResponseEvent.json");
         }
+        LOGGER.debug("Returning response from CDS Simulator: {}", responseString);
         return responseString;
     }
 }