Code cleanup to resolve critical sonar issues

Code cleanup mostly involed directing the output of exception messages
to the correct logger stream.

Issue-ID: [POLICY-115]
Change-Id: I2042bac3d3b0991a2ebed33421a73f1aa300c7c1
Signed-off-by: Magnusen, Drew (dm741q) <dm741q@att.com>

13 files changed, 96 insertions, 52 deletions

diff --git a/controlloop/common/eventmanager/src/main/java/org/onap/policy/controlloop/ControlLoopLogger.java b/controlloop/common/eventmanager/src/main/java/org/onap/policy/controlloop/ControlLoopLogger.java
index 4495f2a71..bb23983ce 100644
--- a/controlloop/common/eventmanager/src/main/java/org/onap/policy/controlloop/ControlLoopLogger.java
+++ b/controlloop/common/eventmanager/src/main/java/org/onap/policy/controlloop/ControlLoopLogger.java
@@ -22,6 +22,10 @@ package org.onap.policy.controlloop;
 
 import java.lang.reflect.Constructor;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
 public interface ControlLoopLogger {
 	
 	public void info(String... parameters);
@@ -32,13 +36,17 @@ public interface ControlLoopLogger {
 	
 	public static class Factory {
 		
-		public ControlLoopLogger buildLogger(String className) {
+		private static final Logger logger = LoggerFactory.getLogger(Factory.class);
+		
+				
+		public ControlLoopLogger buildLogger(String className) throws ControlLoopException {
+			
 			try {
 				Constructor<?> constr = Class.forName(className).getConstructor();
 				return (ControlLoopLogger) constr.newInstance();
 			} catch (Exception e) {
-				e.printStackTrace();
-				throw new RuntimeException("Cannot load class " + className);
+				logger.error("buildLogger threw: ", e);
+				throw new ControlLoopException("Cannot load class " + className);
 			}
 		}
 		
diff --git a/controlloop/common/eventmanager/src/main/java/org/onap/policy/controlloop/ControlLoopPublisher.java b/controlloop/common/eventmanager/src/main/java/org/onap/policy/controlloop/ControlLoopPublisher.java
index 3ed6f8d58..9272e2887 100644
--- a/controlloop/common/eventmanager/src/main/java/org/onap/policy/controlloop/ControlLoopPublisher.java
+++ b/controlloop/common/eventmanager/src/main/java/org/onap/policy/controlloop/ControlLoopPublisher.java
@@ -22,19 +22,24 @@ package org.onap.policy.controlloop;
 
 import java.lang.reflect.Constructor;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 public interface ControlLoopPublisher {
 	
 	public void 	publish(Object object);
 	
 	public static class Factory {
+		private static final Logger logger = LoggerFactory.getLogger(Factory.class);
 		
-		public ControlLoopPublisher buildLogger(String className) {
+				
+		public ControlLoopPublisher buildLogger(String className) throws ControlLoopException {
 			try {
 				Constructor<?> constr = Class.forName(className).getConstructor();
 				return (ControlLoopPublisher) constr.newInstance();
 			} catch (Exception e) {
-				e.printStackTrace();
-				throw new RuntimeException("Cannot load class " + className);
+				logger.error("ControlLoopPublisher.buildLogger threw: ", e);
+				throw new ControlLoopException("Cannot load class " + className);
 			}
 		}
 		
diff --git a/controlloop/common/eventmanager/src/main/java/org/onap/policy/controlloop/eventmanager/ControlLoopEventManager.java b/controlloop/common/eventmanager/src/main/java/org/onap/policy/controlloop/eventmanager/ControlLoopEventManager.java
index d1d2cefd2..3feab7d7c 100644
--- a/controlloop/common/eventmanager/src/main/java/org/onap/policy/controlloop/eventmanager/ControlLoopEventManager.java
+++ b/controlloop/common/eventmanager/src/main/java/org/onap/policy/controlloop/eventmanager/ControlLoopEventManager.java
@@ -33,7 +33,6 @@ import org.onap.policy.controlloop.ControlLoopNotificationType;
 import org.onap.policy.controlloop.ControlLoopOperation;
 import org.onap.policy.controlloop.VirtualControlLoopEvent;
 import org.onap.policy.controlloop.VirtualControlLoopNotification;
-
 import org.onap.policy.controlloop.ControlLoopException;
 import org.onap.policy.controlloop.policy.FinalResult;
 import org.onap.policy.controlloop.policy.Policy;
@@ -43,12 +42,16 @@ import org.onap.policy.guard.LockCallback;
 import org.onap.policy.guard.PolicyGuard;
 import org.onap.policy.guard.PolicyGuard.LockResult;
 import org.onap.policy.guard.TargetLock;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class ControlLoopEventManager implements LockCallback, Serializable {
 	
 	/**
 	 * 
 	 */
+	private static final Logger logger = LoggerFactory.getLogger(ControlLoopEventManager.class);
+	
 	private static final long serialVersionUID = -1216568161322872641L;
 	public final String closedLoopControlName;
 	public final UUID requestID;
@@ -62,11 +65,11 @@ public class ControlLoopEventManager implements LockCallback, Serializable {
 	private FinalResult controlLoopTimedOut = null;
 
 	private boolean isActivated = false;
-	private LinkedList<ControlLoopOperation> controlLoopHistory = new LinkedList<ControlLoopOperation>();
+	private LinkedList<ControlLoopOperation> controlLoopHistory = new LinkedList<>();
 	private ControlLoopOperationManager currentOperation = null;
 	private TargetLock targetLock = null;
 	
-	private static Collection<String> requiredAAIKeys = new ArrayList<String>();
+	private static Collection<String> requiredAAIKeys = new ArrayList<>();
 	static {
 		requiredAAIKeys.add("AICVServerSelfLink");
 		requiredAAIKeys.add("AICIdentity");
@@ -148,6 +151,7 @@ public class ControlLoopEventManager implements LockCallback, Serializable {
 			//
 			this.isActivated = true;
 		} catch (ControlLoopException e) {
+			logger.error("{}: activate threw: ",this, e);
 			notification.notification = ControlLoopNotificationType.REJECTED;
 			notification.message = e.getMessage();
 		}
@@ -183,6 +187,7 @@ public class ControlLoopEventManager implements LockCallback, Serializable {
 					yamlSpecification = decodedYaml;
 				}
 			} catch (UnsupportedEncodingException e) {
+				logger.error("{}: activate threw: ",this, e);
 			}
 			//
 			// Parse the YAML specification
@@ -203,6 +208,7 @@ public class ControlLoopEventManager implements LockCallback, Serializable {
 			//
 			this.isActivated = true;
 		} catch (ControlLoopException e) {
+			logger.error("{}: activate threw: ",this, e);
 			notification.notification = ControlLoopNotificationType.REJECTED;
 			notification.message = e.getMessage();
 		}
@@ -467,6 +473,7 @@ public class ControlLoopEventManager implements LockCallback, Serializable {
 				return NEW_EVENT_STATUS.SYNTAX_ERROR;
 			}
 		} catch (ControlLoopException e) {
+			logger.error("{}: onNewEvent threw: ",this, e);
 			return NEW_EVENT_STATUS.SYNTAX_ERROR;
 		}
 	}
diff --git a/controlloop/common/eventmanager/src/main/java/org/onap/policy/controlloop/eventmanager/ControlLoopOperationManager.java b/controlloop/common/eventmanager/src/main/java/org/onap/policy/controlloop/eventmanager/ControlLoopOperationManager.java
index ff7b2c74d..f552cc549 100644
--- a/controlloop/common/eventmanager/src/main/java/org/onap/policy/controlloop/eventmanager/ControlLoopOperationManager.java
+++ b/controlloop/common/eventmanager/src/main/java/org/onap/policy/controlloop/eventmanager/ControlLoopOperationManager.java
@@ -30,15 +30,15 @@ import javax.persistence.Persistence;
 
 import org.onap.policy.appc.Response;
 import org.onap.policy.appc.ResponseCode;
-
 import org.onap.policy.controlloop.ControlLoopEvent;
 import org.onap.policy.controlloop.ControlLoopOperation;
 import org.onap.policy.controlloop.VirtualControlLoopEvent;
-
 import org.onap.policy.controlloop.ControlLoopException;
 import org.onap.policy.controlloop.policy.Policy;
 import org.onap.policy.controlloop.policy.PolicyResult;
 import org.onap.policy.controlloop.actor.appc.APPCActorServiceProvider;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 
 public class ControlLoopOperationManager implements Serializable {
@@ -47,6 +47,7 @@ public class ControlLoopOperationManager implements Serializable {
 	 * 
 	 */
 	private static final long serialVersionUID = -3773199283624595410L;
+	private static final Logger logger = LoggerFactory.getLogger(ControlLoopOperationManager.class);
 
 	@Override
 	public String toString() {
@@ -449,7 +450,7 @@ public class ControlLoopOperationManager implements Serializable {
 		try{
 			em = Persistence.createEntityManagerFactory("OperationsHistoryPU").createEntityManager();//emf.createEntityManager();		
 		}catch(Exception e){
-			System.err.println("Test thread got Exception " + e.getLocalizedMessage() + " Can't write to Operations History DB.");
+			logger.error("storeOperationInDataBase threw: ", e);
 			return;	
 		}
 			
diff --git a/controlloop/common/guard/src/main/java/org/onap/policy/guard/CallGuardTask.java b/controlloop/common/guard/src/main/java/org/onap/policy/guard/CallGuardTask.java
index dbef0c433..53e972941 100644
--- a/controlloop/common/guard/src/main/java/org/onap/policy/guard/CallGuardTask.java
+++ b/controlloop/common/guard/src/main/java/org/onap/policy/guard/CallGuardTask.java
@@ -23,13 +23,17 @@ package org.onap.policy.guard;
 import com.att.research.xacml.api.DataTypeException;
 import com.att.research.xacml.api.pdp.PDPEngine;
 import com.att.research.xacml.std.annotations.RequestParser;
+
 import java.util.UUID;
 
 import org.drools.core.WorkingMemory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 
 public class CallGuardTask implements Runnable {
 	
+	private static final Logger logger = LoggerFactory.getLogger(CallGuardTask.class);
 	WorkingMemory workingMemory;
 	PDPEngine embeddedPdpEngine;
 	String restfulPdpUrl;
@@ -59,8 +63,7 @@ public class CallGuardTask implements Runnable {
     	try {
     		request = RequestParser.parseRequest(xacmlReq);
 		} catch (IllegalArgumentException | IllegalAccessException | DataTypeException e) {
-			// TODO Auto-generated catch block
-			e.printStackTrace();
+			logger.error("CallGuardTask.run threw: ", e);
 		} 
     	
 		
diff --git a/controlloop/common/guard/src/main/java/org/onap/policy/guard/PIPEngineGetHistory.java b/controlloop/common/guard/src/main/java/org/onap/policy/guard/PIPEngineGetHistory.java
index 8f3928cdd..57deee5f1 100644
--- a/controlloop/common/guard/src/main/java/org/onap/policy/guard/PIPEngineGetHistory.java
+++ b/controlloop/common/guard/src/main/java/org/onap/policy/guard/PIPEngineGetHistory.java
@@ -47,15 +47,16 @@ import com.att.research.xacml.api.Attribute;
 import com.att.research.xacml.api.AttributeValue;
 import com.att.research.xacml.api.Identifier;
 import com.att.research.xacml.std.datatypes.DataTypes;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 
 
 public class PIPEngineGetHistory extends StdConfigurableEngine{
 
-	private Log logger							= LogFactory.getLog(this.getClass());
 	
+	private static final Logger logger = LoggerFactory.getLogger(PIPEngineGetHistory.class);
 	//private static EntityManager em;
 	
 	public static final String DEFAULT_DESCRIPTION		= "PIP for retrieving Operations History from DB";
@@ -88,7 +89,7 @@ public class PIPEngineGetHistory extends StdConfigurableEngine{
 		try {
 			attributeValue	= DataTypes.DT_INTEGER.createAttributeValue(value);
 		} catch (Exception ex) {
-			this.logger.error("Failed to convert " + value + " to an AttributeValue<Boolean>", ex);
+			this.logger.error("Failed to convert {} to an AttributeValue<Boolean>",value, ex);
 		}
 		if (attributeValue != null) {
 			stdPIPResponse.addAttribute(new StdMutableAttribute(category, attributeId, attributeValue, pipRequest.getIssuer()/*this.getIssuer()*/, false));
@@ -193,7 +194,7 @@ public class PIPEngineGetHistory extends StdConfigurableEngine{
 				pipResponse	= null;
 			}
 		} catch (PIPException ex) {
-			System.out.println("PIPException getting subject-id attribute: " + ex.getMessage());			
+			logger.error("getAttribute threw: ", ex);
 		}
 		return pipResponse;
 	}
@@ -295,29 +296,28 @@ public class PIPEngineGetHistory extends StdConfigurableEngine{
 		try{
 			em = Persistence.createEntityManagerFactory("OperationsHistoryPU").createEntityManager();
 		}catch(Exception e){
-			System.err.println("PIP thread got Exception " + e.getLocalizedMessage() + " Can't connect to Operations History DB.");
+			logger.error("getCountFromDB threw: ", e);
 			return -1;
 		}
 		
-		String sql = "select count(*) as count from operationshistory10 where outcome<>'Failure_Guard' and actor='"
-				+ actor
-				+ "' and operation='"
-				+ operation
-				+ "' and target='"
-				+ target
-				+ "' "
-				+ "and endtime between date_sub(now(),interval "
-				+ timeWindow
-				+ ") and now()";
-		
-		Query nq = em.createNativeQuery(sql);
+		String sql = "select count(*) as count from operationshistory10 where outcome<>'Failure_Guard'"
+				+ " and actor=:actor" 
+				+ " and operation=:operation" 
+				+ " and target=:target" 
+				+ " and endtime between date_sub(now(),interval :timeWindow) and now()"; 
+ 
+		Query nq = em.createNativeQuery(sql); 
+		nq = nq.setParameter("actor", actor); 
+		nq = nq.setParameter("operation", operation); 
+		nq = nq.setParameter("target", target); 
+		nq = nq.setParameter("timeWindow", timeWindow);
 		
 		int ret = -1;
 		try{
 			ret = ((Number)nq.getSingleResult()).intValue();
 		}
 		catch(NoResultException | NonUniqueResultException ex){
-			System.err.println("PIP thread got Exception " + ex.getLocalizedMessage());
+			logger.error("getCountFromDB threw: ", ex);
 			return -1;
 		}
 		
diff --git a/controlloop/common/guard/src/main/java/org/onap/policy/guard/PolicyGuardXacmlHelper.java b/controlloop/common/guard/src/main/java/org/onap/policy/guard/PolicyGuardXacmlHelper.java
index 20d50fd3b..c0ed80086 100644
--- a/controlloop/common/guard/src/main/java/org/onap/policy/guard/PolicyGuardXacmlHelper.java
+++ b/controlloop/common/guard/src/main/java/org/onap/policy/guard/PolicyGuardXacmlHelper.java
@@ -30,6 +30,8 @@ import java.util.UUID;
 
 import org.apache.commons.io.IOUtils;
 import org.apache.http.entity.ContentType;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.att.research.xacml.api.Attribute;
 import com.att.research.xacml.api.AttributeCategory;
@@ -44,7 +46,7 @@ import com.att.research.xacml.std.json.JSONResponse;
 
 public class PolicyGuardXacmlHelper {
 	
-	
+	private static final Logger logger = LoggerFactory.getLogger(PolicyGuardXacmlHelper.class);
 
 	public static com.att.research.xacml.api.Response callPDP(PDPEngine xacmlEmbeddedPdpEngine, String restfulPdpUrl, com.att.research.xacml.api.Request request, boolean isREST) {
 		//
@@ -133,19 +135,20 @@ public class PolicyGuardXacmlHelper {
         					contentType.getMimeType().equalsIgnoreCase("application/xacml+xml") ) {
                 		response = (com.att.research.xacml.api.Response) DOMResponse.load(connection.getInputStream());
         			} else {
-        				System.err.println("unknown content-type: " + contentType);
+        				logger.error("{}: unknown content-type: ", contentType);
                 	}
 
                 } catch (Exception e) {
         			String message = "Parsing Content-Type: " + connection.getContentType() + ", error=" + e.getMessage();
-        			System.err.println(message);
+        			logger.error("{}: callRESTfulPDP threw: ", message);
         		}
 
             } else {
-            	System.err.println(connection.getResponseCode() + " " + connection.getResponseMessage());
+            	logger.error("unknown content-type: {} {}", connection.getResponseCode(), connection.getResponseMessage() );
             }
 		} catch (Exception e) {
-			System.err.println(e);
+			
+			logger.error("callRESTfulPDP threw: ", e);
 		}
 		
 		return response;
diff --git a/controlloop/common/guard/src/main/java/org/onap/policy/guard/PolicyGuardYamlToXacml.java b/controlloop/common/guard/src/main/java/org/onap/policy/guard/PolicyGuardYamlToXacml.java
index 4d952b58e..21584f0b5 100644
--- a/controlloop/common/guard/src/main/java/org/onap/policy/guard/PolicyGuardYamlToXacml.java
+++ b/controlloop/common/guard/src/main/java/org/onap/policy/guard/PolicyGuardYamlToXacml.java
@@ -30,11 +30,14 @@ import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 import org.onap.policy.controlloop.policy.guard.ControlLoopGuard;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 
 
 public class PolicyGuardYamlToXacml {
 	
+	private static final Logger logger = LoggerFactory.getLogger(PolicyGuardYamlToXacml.class);
 	
 	public static void fromYamlToXacml(String yamlFile, String xacmlTemplate, String xacmlPolicyOutput){
 		
@@ -67,8 +70,7 @@ public class PolicyGuardYamlToXacml {
 	        Files.write(Paths.get(xacmlPolicyOutput), xacmlPolicyContent.getBytes());
         
 		} catch (IOException e) {
-			// TODO Auto-generated catch block
-			e.printStackTrace();
+			logger.error("fromYamlToXacml threw: ", e);
 		}
 		
 	}
@@ -198,8 +200,7 @@ public class PolicyGuardYamlToXacml {
 	        Files.write(Paths.get(xacmlPolicyOutput), xacmlPolicyContent.getBytes());
         
 		} catch (IOException e) {
-			// TODO Auto-generated catch block
-			e.printStackTrace();
+			logger.error("fromYamlToXacmlBlacklist threw: ", e);
 		}
 		
 	}
diff --git a/controlloop/common/model-impl/aai/src/main/java/org/onap/policy/aai/AAINQF199/AAINQF199Manager.java b/controlloop/common/model-impl/aai/src/main/java/org/onap/policy/aai/AAINQF199/AAINQF199Manager.java
index e02021a43..b079122e4 100644
--- a/controlloop/common/model-impl/aai/src/main/java/org/onap/policy/aai/AAINQF199/AAINQF199Manager.java
+++ b/controlloop/common/model-impl/aai/src/main/java/org/onap/policy/aai/AAINQF199/AAINQF199Manager.java
@@ -28,10 +28,13 @@ import org.onap.policy.aai.AAIGETResponse;
 import org.onap.policy.aai.util.Serialization;
 import org.onap.policy.rest.RESTManager;
 import org.onap.policy.rest.RESTManager.Pair;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.google.gson.JsonSyntaxException;
 
 public final class AAINQF199Manager {
+	private static final Logger logger = LoggerFactory.getLogger(AAINQF199Manager.class);
 	
 	public static AAINQF199Response	postQuery(String url, String username, String password, AAINQF199Request request, UUID requestID) {
 		
@@ -57,7 +60,7 @@ public final class AAINQF199Manager {
 				AAINQF199Response response = Serialization.gsonPretty.fromJson(httpDetails.b, AAINQF199Response.class);
 				return response;
 			} catch (JsonSyntaxException e) {
-				System.err.println("Failed to deserialize into AAIResponse" + e.getLocalizedMessage());
+				logger.error("postQuery threw: ", e);
 			}
 		}
 
@@ -93,7 +96,7 @@ public final class AAINQF199Manager {
 					responseGet = Serialization.gsonPretty.fromJson(httpDetailsGet.b, AAIGETResponse.class);
 					return responseGet;
 				} catch (JsonSyntaxException e) {
-					System.err.println("Failed to deserialize into AAIResponse" + e.getLocalizedMessage());
+					logger.error("getQuery threw: ", e);
 				}
 			}
 			try {
diff --git a/controlloop/common/model-impl/appc/src/main/java/org/onap/policy/appc/util/Serialization.java b/controlloop/common/model-impl/appc/src/main/java/org/onap/policy/appc/util/Serialization.java
index 8a801c32b..be7a66ada 100644
--- a/controlloop/common/model-impl/appc/src/main/java/org/onap/policy/appc/util/Serialization.java
+++ b/controlloop/common/model-impl/appc/src/main/java/org/onap/policy/appc/util/Serialization.java
@@ -25,6 +25,9 @@ import java.time.Instant;
 import java.time.ZonedDateTime;
 import java.time.format.DateTimeFormatter;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 import com.google.gson.JsonDeserializationContext;
@@ -37,16 +40,17 @@ import com.google.gson.JsonSerializer;
 
 public final class Serialization {
 	
-	public static DateTimeFormatter format = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.SSSSSSxxx");
+	public static final DateTimeFormatter format = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.SSSSSSxxx");
 
 	public static class gsonUTCAdapter implements JsonSerializer<ZonedDateTime>, JsonDeserializer<ZonedDateTime> {
-
+		private static final Logger logger = LoggerFactory.getLogger(gsonUTCAdapter.class);
+		
 		public ZonedDateTime deserialize(JsonElement element, Type type, JsonDeserializationContext context)
 				throws JsonParseException {
 			try {
 				return ZonedDateTime.parse(element.getAsString(), format);
 			} catch (Exception e) {
-				System.err.println(e);
+				logger.error("deserialize threw: ", e);
 			}
 			return null;
 		}
diff --git a/controlloop/common/model-impl/events/src/main/java/org/onap/policy/controlloop/util/Serialization.java b/controlloop/common/model-impl/events/src/main/java/org/onap/policy/controlloop/util/Serialization.java
index a45947733..9e6d1afc0 100644
--- a/controlloop/common/model-impl/events/src/main/java/org/onap/policy/controlloop/util/Serialization.java
+++ b/controlloop/common/model-impl/events/src/main/java/org/onap/policy/controlloop/util/Serialization.java
@@ -73,7 +73,7 @@ public final class Serialization {
 	}
 	
 	public static class gsonUTCAdapter implements JsonSerializer<ZonedDateTime>, JsonDeserializer<ZonedDateTime> {
-		public static DateTimeFormatter format = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.SSSSSSxxx");
+		public static final DateTimeFormatter format = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.SSSSSSxxx");
 
 		public ZonedDateTime deserialize(JsonElement element, Type type, JsonDeserializationContext context)
 				throws JsonParseException {
diff --git a/controlloop/common/model-impl/mso/src/main/java/org/onap/policy/mso/MSOManager.java b/controlloop/common/model-impl/mso/src/main/java/org/onap/policy/mso/MSOManager.java
index 79725901a..81d43ef76 100644
--- a/controlloop/common/model-impl/mso/src/main/java/org/onap/policy/mso/MSOManager.java
+++ b/controlloop/common/model-impl/mso/src/main/java/org/onap/policy/mso/MSOManager.java
@@ -26,11 +26,15 @@ import java.util.Map;
 import org.onap.policy.mso.util.Serialization;
 import org.onap.policy.rest.RESTManager;
 import org.onap.policy.rest.RESTManager.Pair;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.google.gson.JsonSyntaxException;
 
 public final class MSOManager {
 
+	private static final Logger logger = LoggerFactory.getLogger(MSOManager.class);
+	
 	public static MSOResponse createModuleInstance(String url, String urlBase, String username, String password, MSORequest request) {
 		
 		//
@@ -87,9 +91,9 @@ public final class MSOManager {
 				System.out.println("***** ########  VF Module Creation timeout. Status: ("+responseGet.request.requestStatus.requestState+")");
 				return responseGet;
 			} catch (JsonSyntaxException e) {
-				System.err.println("Failed to deserialize into MSOResponse" + e.getLocalizedMessage());
+				logger.error("Failed to deserialize into MSOResponse: ", e);
 			} catch (InterruptedException e) {
-				System.err.println("Interrupted exception: " + e.getLocalizedMessage());
+				logger.error("Interrupted exception: ", e);
 			}
 		}
 		
diff --git a/controlloop/common/model-impl/rest/src/main/java/org/onap/policy/rest/RESTManager.java b/controlloop/common/model-impl/rest/src/main/java/org/onap/policy/rest/RESTManager.java
index e42ab1693..8c79d2ad3 100644
--- a/controlloop/common/model-impl/rest/src/main/java/org/onap/policy/rest/RESTManager.java
+++ b/controlloop/common/model-impl/rest/src/main/java/org/onap/policy/rest/RESTManager.java
@@ -34,9 +34,13 @@ import org.apache.http.impl.client.BasicCredentialsProvider;
 import org.apache.http.impl.client.CloseableHttpClient;
 import org.apache.http.impl.client.HttpClientBuilder;
 import org.apache.http.util.EntityUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public final class RESTManager {
 
+	private static final Logger logger = LoggerFactory.getLogger(RESTManager.class);
+	
 	public static class Pair<A, B> {
 		public final A a;
 		public final B b;
@@ -81,7 +85,8 @@ public final class RESTManager {
 
 			return new Pair<Integer, String>(response.getStatusLine().getStatusCode(), returnBody);
 		} catch (IOException e) {
-			System.err.println("Failed to POST to " + url + e.getLocalizedMessage());
+			logger.error("Failed to POST to {}",url,e);
+
 			return null;
 		}
 		
@@ -108,7 +113,7 @@ public final class RESTManager {
 
 			return new Pair<Integer, String>(response.getStatusLine().getStatusCode(), returnBody);
 		} catch (IOException e) {
-			System.err.println("Failed to GET to " + url + e.getLocalizedMessage());
+			logger.error("Failed to GET to {}",url,e);
 			return null;
 		}
 	}