Update controlloop messages

Updated controlloop messages according to
https://wiki.onap.org/display/DW/The+CLAMP+Control+Loop+Participant+Protocol

Issue-ID: POLICY-3417
Signed-off-by: Sirisha_Manchikanti <sirisha.manchikanti@est.tech>
Change-Id: Ied32ea5bb63a6b69286d03f1a7b2b86e3acad7a7

6 files changed, 107 insertions, 92 deletions

diff --git a/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/comm/MessageSender.java b/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/comm/MessageSender.java
index 1741d9514..3ff420ffa 100644
--- a/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/comm/MessageSender.java
+++ b/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/comm/MessageSender.java
@@ -22,7 +22,10 @@ package org.onap.policy.clamp.controlloop.participant.intermediary.comm;
 
 import java.io.Closeable;
 import java.time.Instant;
+import java.util.LinkedHashMap;
+import java.util.Map;
 import java.util.TimerTask;
+import java.util.UUID;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.TimeUnit;
@@ -30,9 +33,9 @@ import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoop
 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopElement;
 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoops;
 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ParticipantStatistics;
+import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ControlLoopAck;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantDeregister;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantRegister;
-import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantResponseDetails;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantResponseStatus;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantStatus;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantUpdateAck;
@@ -84,48 +87,23 @@ public class MessageSender extends TimerTask implements Closeable {
     /**
      * Send a response message for this participant.
      *
-     * @param response the details to include in the response message
+     * @param ackMessage the details to include in the response message
      */
-    public void sendResponse(ParticipantResponseDetails response) {
-        sendResponse(null, response);
+    public void sendAckResponse(ControlLoopAck ackMessage) {
+        sendAckResponse(null, ackMessage);
     }
 
     /**
      * Dispatch a response message for this participant.
      *
      * @param controlLoopId the control loop to which this message is a response
-     * @param response the details to include in the response message
+     * @param ackMessage the details to include in the response message
      */
-    public void sendResponse(ToscaConceptIdentifier controlLoopId, ParticipantResponseDetails response) {
-        var status = new ParticipantStatus();
-
+    public void sendAckResponse(ToscaConceptIdentifier controlLoopId, ControlLoopAck ackMessage) {
         // Participant related fields
-        status.setParticipantType(participantHandler.getParticipantType());
-        status.setParticipantId(participantHandler.getParticipantId());
-        status.setState(participantHandler.getState());
-        status.setHealthStatus(participantHandler.getHealthStatus());
-
-        // Control loop related fields
-        var controlLoops = participantHandler.getControlLoopHandler().getControlLoops();
-        status.setControlLoopId(controlLoopId);
-        status.setControlLoops(controlLoops);
-        status.setResponse(response);
-
-        var participantStatistics = new ParticipantStatistics();
-        participantStatistics.setTimeStamp(Instant.now());
-        participantStatistics.setParticipantId(participantHandler.getParticipantId());
-        participantStatistics.setHealthStatus(participantHandler.getHealthStatus());
-        participantStatistics.setState(participantHandler.getState());
-        status.setParticipantStatistics(participantStatistics);
-
-        for (ControlLoopElementListener clElementListener :
-            participantHandler.getControlLoopHandler().getListeners()) {
-            updateClElementStatistics(controlLoops, clElementListener);
-        }
-
-        status.setControlLoops(controlLoops);
-
-        publisher.sendParticipantStatus(status);
+        ackMessage.setParticipantType(participantHandler.getParticipantType());
+        ackMessage.setParticipantId(participantHandler.getParticipantId());
+        publisher.sendControlLoopAck(ackMessage);
     }
 
     /**
@@ -156,6 +134,21 @@ public class MessageSender extends TimerTask implements Closeable {
     }
 
     /**
+     * Send a ParticipantStatus message for this participant.
+     *
+     * @param participantStatus the ParticipantStatus message
+     */
+    public void sendParticipantStatus(ParticipantStatus participantStatus) {
+        var controlLoops = participantHandler.getControlLoopHandler().getControlLoops();
+        for (ControlLoopElementListener clElementListener :
+            participantHandler.getControlLoopHandler().getListeners()) {
+            updateClElementStatistics(controlLoops, clElementListener);
+        }
+
+        publisher.sendParticipantStatus(participantStatus);
+    }
+
+    /**
      * Dispatch a heartbeat for this participant.
      */
     public void sendHeartbeat() {
diff --git a/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/comm/ParticipantMessagePublisher.java b/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/comm/ParticipantMessagePublisher.java
index 051f00095..d8cc9eb6b 100644
--- a/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/comm/ParticipantMessagePublisher.java
+++ b/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/comm/ParticipantMessagePublisher.java
@@ -21,6 +21,7 @@
 package org.onap.policy.clamp.controlloop.participant.intermediary.comm;
 
 import java.util.List;
+import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ControlLoopAck;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantDeregister;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantRegister;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantStatus;
@@ -92,6 +93,16 @@ public class ParticipantMessagePublisher {
     }
 
     /**
+     * Method to send ControlLoop Update/StateChange Ack message to runtime.
+     *
+     * @param controlLoopAck ControlLoop Update/StateChange Ack
+     */
+    public void sendControlLoopAck(final ControlLoopAck controlLoopAck) {
+        topicSinkClient.send(controlLoopAck);
+        LOGGER.debug("Sent ControlLoop Update/StateChange Ack to runtime - {}", controlLoopAck);
+    }
+
+    /**
      * Method to send Participant heartbeat to clamp on demand.
      *
      * @param participantStatus the Participant Status
diff --git a/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/comm/ParticipantHealthCheckListener.java b/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/comm/ParticipantStatusReqListener.java
index 15f5140eb..0881edb19 100644
--- a/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/comm/ParticipantHealthCheckListener.java
+++ b/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/comm/ParticipantStatusReqListener.java
@@ -20,22 +20,22 @@
 
 package org.onap.policy.clamp.controlloop.participant.intermediary.comm;
 
-import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantHealthCheck;
+import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantStatusReq;
 import org.onap.policy.clamp.controlloop.participant.intermediary.handler.ParticipantHandler;
 import org.springframework.stereotype.Component;
 
 /**
- * Listener for Participant health status messages sent by CLAMP.
+ * Listener for Participant status request messages sent by runtime to all/one participant.
  */
 @Component
-public class ParticipantHealthCheckListener extends ParticipantListener<ParticipantHealthCheck> {
+public class ParticipantStatusReqListener extends ParticipantListener<ParticipantStatusReq> {
 
     /**
      * Constructs the object.
      *
      * @param participantHandler the handler for managing the state and health of the participant
      */
-    public ParticipantHealthCheckListener(final ParticipantHandler participantHandler) {
-        super(ParticipantHealthCheck.class, participantHandler, participantHandler::handleParticipantHealthCheck);
+    public ParticipantStatusReqListener(final ParticipantHandler participantHandler) {
+        super(ParticipantStatusReq.class, participantHandler, participantHandler::handleParticipantStatusReq);
     }
 }
diff --git a/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/handler/ControlLoopHandler.java b/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/handler/ControlLoopHandler.java
index c9da1279d..876a4cc52 100644
--- a/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/handler/ControlLoopHandler.java
+++ b/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/handler/ControlLoopHandler.java
@@ -28,6 +28,7 @@ import java.util.UUID;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 import org.apache.commons.collections4.CollectionUtils;
+import org.apache.commons.lang3.tuple.Pair;
 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ClElementStatistics;
 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoop;
 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopElement;
@@ -35,10 +36,10 @@ import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoop
 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopOrderedState;
 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopState;
 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoops;
+import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ControlLoopAck;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ControlLoopStateChange;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ControlLoopUpdate;
-import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantResponseDetails;
-import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantResponseStatus;
+import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantMessageType;
 import org.onap.policy.clamp.controlloop.participant.intermediary.api.ControlLoopElementListener;
 import org.onap.policy.clamp.controlloop.participant.intermediary.comm.MessageSender;
 import org.onap.policy.clamp.controlloop.participant.intermediary.parameters.ParticipantIntermediaryParameters;
@@ -60,6 +61,7 @@ public class ControlLoopHandler {
 
     private final Map<ToscaConceptIdentifier, ControlLoop> controlLoopMap = new LinkedHashMap<>();
 
+    @Getter
     private final Map<UUID, ControlLoopElement> elementsOnThisParticipant = new LinkedHashMap<>();
 
     @Getter
@@ -93,21 +95,23 @@ public class ControlLoopHandler {
             ControlLoopState newState) {
 
         if (id == null) {
-            return null;
+            LOGGER.warn("Cannot update Control loop element state, id is null");
         }
 
+        ControlLoopAck controlLoopStateChangeAck =
+                new ControlLoopAck(ParticipantMessageType.CONTROLLOOP_STATECHANGE_ACK);
         ControlLoopElement clElement = elementsOnThisParticipant.get(id);
         if (clElement != null) {
             clElement.setOrderedState(orderedState);
             clElement.setState(newState);
+            controlLoopStateChangeAck.getControlLoopResultMap().put(clElement.getId(),
+                Pair.of(true, "Control loop element {} state changed to {}\", id, newState)"));
             LOGGER.debug("Control loop element {} state changed to {}", id, newState);
-            var response = new ParticipantResponseDetails();
-            response.setResponseStatus(ParticipantResponseStatus.SUCCESS);
-            response.setResponseMessage("ControlLoopElement state changed to {} " + newState);
-            messageSender.sendResponse(response);
+            controlLoopStateChangeAck.setMessage("ControlLoopElement state changed to {} " + newState);
+            controlLoopStateChangeAck.setResult(true);
+            messageSender.sendAckResponse(controlLoopStateChangeAck);
             return clElement;
         }
-
         return null;
     }
 
@@ -143,9 +147,11 @@ public class ControlLoopHandler {
             return;
         }
 
-        var response = new ParticipantResponseDetails(stateChangeMsg);
-        handleState(controlLoop, response, stateChangeMsg.getOrderedState());
-        messageSender.sendResponse(response);
+        var controlLoopStateChangeAck = new ControlLoopAck(ParticipantMessageType.CONTROLLOOP_STATECHANGE_ACK);
+        controlLoopStateChangeAck.setResponseTo(stateChangeMsg.getMessageId());
+        controlLoopStateChangeAck.setControlLoopId(stateChangeMsg.getControlLoopId());
+        handleState(controlLoop, controlLoopStateChangeAck, stateChangeMsg.getOrderedState());
+        messageSender.sendAckResponse(controlLoopStateChangeAck);
     }
 
     /**
@@ -155,7 +161,7 @@ public class ControlLoopHandler {
      * @param response participant response
      * @param orderedState controlloop ordered state
      */
-    private void handleState(final ControlLoop controlLoop, final ParticipantResponseDetails response,
+    private void handleState(final ControlLoop controlLoop, final ControlLoopAck response,
             ControlLoopOrderedState orderedState) {
         switch (orderedState) {
             case UNINITIALISED:
@@ -187,16 +193,17 @@ public class ControlLoopHandler {
 
         var controlLoop = controlLoopMap.get(updateMsg.getControlLoopId());
 
-        var response = new ParticipantResponseDetails(updateMsg);
+        var controlLoopUpdateAck = new ControlLoopAck(ParticipantMessageType.CONTROLLOOP_UPDATE_ACK);
 
         // TODO: Updates to existing ControlLoops are not supported yet (Addition/Removal of ControlLoop
         // elements to existing ControlLoop has to be supported).
         if (controlLoop != null) {
-            response.setResponseStatus(ParticipantResponseStatus.FAIL);
-            response.setResponseMessage("Control loop " + updateMsg.getControlLoopId()
-                    + " already defined on participant " + participantId);
-
-            messageSender.sendResponse(response);
+            controlLoopUpdateAck.setResponseTo(updateMsg.getMessageId());
+            controlLoopUpdateAck.setControlLoopId(updateMsg.getControlLoopId());
+            controlLoopUpdateAck.setMessage("Control loop " + updateMsg.getControlLoopId()
+                + " already defined on participant " + participantId);
+            controlLoopUpdateAck.setResult(false);
+            messageSender.sendAckResponse(controlLoopUpdateAck);
             return;
         }
 
@@ -221,11 +228,12 @@ public class ControlLoopHandler {
             }
         }
 
-        response.setResponseStatus(ParticipantResponseStatus.SUCCESS);
-        response.setResponseMessage(
-                "Control loop " + updateMsg.getControlLoopId() + " defined on participant " + participantId);
-
-        messageSender.sendResponse(response);
+        controlLoopUpdateAck.setResponseTo(updateMsg.getMessageId());
+        controlLoopUpdateAck.setControlLoopId(updateMsg.getControlLoopId());
+        controlLoopUpdateAck.setMessage("Control loop " + updateMsg.getControlLoopId()
+                + " defined on participant " + participantId);
+        controlLoopUpdateAck.setResult(true);
+        messageSender.sendAckResponse(controlLoopUpdateAck);
     }
 
     /**
@@ -236,7 +244,7 @@ public class ControlLoopHandler {
      * @param response participant response
      */
     private void handleUninitialisedState(final ControlLoop controlLoop, final ControlLoopOrderedState orderedState,
-            final ParticipantResponseDetails response) {
+            final ControlLoopAck response) {
         handleStateChange(controlLoop, orderedState, ControlLoopState.UNINITIALISED, response);
         controlLoopMap.remove(controlLoop.getKey().asIdentifier());
 
@@ -259,7 +267,7 @@ public class ControlLoopHandler {
      * @param response participant response
      */
     private void handlePassiveState(final ControlLoop controlLoop, final ControlLoopOrderedState orderedState,
-            final ParticipantResponseDetails response) {
+            final ControlLoopAck response) {
         handleStateChange(controlLoop, orderedState, ControlLoopState.PASSIVE, response);
     }
 
@@ -271,7 +279,7 @@ public class ControlLoopHandler {
      * @param response participant response
      */
     private void handleRunningState(final ControlLoop controlLoop, final ControlLoopOrderedState orderedState,
-            final ParticipantResponseDetails response) {
+            final ControlLoopAck response) {
         handleStateChange(controlLoop, orderedState, ControlLoopState.RUNNING, response);
     }
 
@@ -284,11 +292,11 @@ public class ControlLoopHandler {
      * @param response the response to the state change request
      */
     private void handleStateChange(ControlLoop controlLoop, final ControlLoopOrderedState orderedState,
-            ControlLoopState newState, ParticipantResponseDetails response) {
+            ControlLoopState newState, ControlLoopAck response) {
 
         if (orderedState.equals(controlLoop.getOrderedState())) {
-            response.setResponseStatus(ParticipantResponseStatus.SUCCESS);
-            response.setResponseMessage("Control loop is already in state " + orderedState);
+            response.setMessage("Control loop is already in state " + orderedState);
+            response.setResult(false);
             return;
         }
 
@@ -299,9 +307,8 @@ public class ControlLoopHandler {
             });
         }
 
-        response.setResponseStatus(ParticipantResponseStatus.SUCCESS);
-        response.setResponseMessage(
-                "ControlLoop state changed from " + controlLoop.getOrderedState() + " to " + orderedState);
+        response.setMessage("ControlLoop state changed from " + controlLoop.getOrderedState() + " to " + orderedState);
+        response.setResult(true);
         controlLoop.setOrderedState(orderedState);
     }
 
diff --git a/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/handler/IntermediaryActivator.java b/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/handler/IntermediaryActivator.java
index f846b2d75..4fc0ae1b1 100644
--- a/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/handler/IntermediaryActivator.java
+++ b/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/handler/IntermediaryActivator.java
@@ -28,8 +28,8 @@ import org.onap.policy.clamp.controlloop.participant.intermediary.api.Participan
 import org.onap.policy.clamp.controlloop.participant.intermediary.comm.ControlLoopStateChangeListener;
 import org.onap.policy.clamp.controlloop.participant.intermediary.comm.ControlLoopUpdateListener;
 import org.onap.policy.clamp.controlloop.participant.intermediary.comm.ParticipantDeregisterAckListener;
-import org.onap.policy.clamp.controlloop.participant.intermediary.comm.ParticipantHealthCheckListener;
 import org.onap.policy.clamp.controlloop.participant.intermediary.comm.ParticipantRegisterAckListener;
+import org.onap.policy.clamp.controlloop.participant.intermediary.comm.ParticipantStatusReqListener;
 import org.onap.policy.clamp.controlloop.participant.intermediary.comm.ParticipantUpdateListener;
 import org.onap.policy.clamp.controlloop.participant.intermediary.parameters.ParticipantParameters;
 import org.onap.policy.common.endpoints.event.comm.TopicEndpointManager;
@@ -119,8 +119,8 @@ public class IntermediaryActivator extends ServiceManagerContainer implements Cl
     private void registerMsgDispatcher() {
         MessageTypeDispatcher msgDispatcher = applicationContext.getBean(MessageTypeDispatcher.class);
 
-        msgDispatcher.register(ParticipantMessageType.PARTICIPANT_HEALTH_CHECK.name(),
-                applicationContext.getBean(ParticipantHealthCheckListener.class));
+        msgDispatcher.register(ParticipantMessageType.PARTICIPANT_STATUS_REQ.name(),
+                applicationContext.getBean(ParticipantStatusReqListener.class));
 
         msgDispatcher.register(ParticipantMessageType.CONTROL_LOOP_STATE_CHANGE.name(),
                 applicationContext.getBean(ControlLoopStateChangeListener.class));
diff --git a/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/handler/ParticipantHandler.java b/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/handler/ParticipantHandler.java
index 9daff7239..6a0e758dd 100644
--- a/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/handler/ParticipantHandler.java
+++ b/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/handler/ParticipantHandler.java
@@ -32,17 +32,18 @@ import org.onap.policy.clamp.controlloop.models.controlloop.concepts.Participant
 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ParticipantHealthStatus;
 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ParticipantState;
 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ParticipantStatistics;
+import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ControlLoopAck;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ControlLoopStateChange;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ControlLoopUpdate;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantDeregister;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantDeregisterAck;
-import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantHealthCheck;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantMessage;
+import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantMessageType;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantRegister;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantRegisterAck;
-import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantResponseDetails;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantResponseStatus;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantStatus;
+import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantStatusReq;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantUpdate;
 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantUpdateAck;
 import org.onap.policy.clamp.controlloop.participant.intermediary.comm.MessageSender;
@@ -99,14 +100,15 @@ public class ParticipantHandler implements Closeable {
     /**
      * Method which handles a participant health check event from clamp.
      *
-     * @param healthCheckMsg participant health check message
+     * @param participantStatusReqMsg participant participantStatusReq message
      */
-    public void handleParticipantHealthCheck(final ParticipantHealthCheck healthCheckMsg) {
-        var response = new ParticipantResponseDetails(healthCheckMsg);
-        response.setResponseStatus(ParticipantResponseStatus.SUCCESS);
-        response.setResponseMessage(healthStatus.toString());
-
-        sender.sendResponse(response);
+    public void handleParticipantStatusReq(final ParticipantStatusReq participantStatusReqMsg) {
+        ParticipantStatus participantStatus = new ParticipantStatus();
+        participantStatus.setParticipantId(participantId);
+        participantStatus.setParticipantStatistics(participantStatistics);
+        participantStatus.setParticipantType(participantType);
+        participantStatus.setHealthStatus(healthStatus);
+        sender.sendParticipantStatus(participantStatus);
     }
 
     /**
@@ -127,13 +129,13 @@ public class ParticipantHandler implements Closeable {
         controlLoopHandler.handleControlLoopStateChange(stateChangeMsg);
     }
 
-    private void handleStateChange(ParticipantState newParticipantState, ParticipantResponseDetails response) {
+    private void handleStateChange(ParticipantState newParticipantState, ParticipantUpdateAck response) {
         if (state.equals(newParticipantState)) {
-            response.setResponseStatus(ParticipantResponseStatus.SUCCESS);
-            response.setResponseMessage("Participant already in state " + newParticipantState);
+            response.setResult(false);
+            response.setMessage("Participant already in state " + newParticipantState);
         } else {
-            response.setResponseStatus(ParticipantResponseStatus.SUCCESS);
-            response.setResponseMessage("Participant state changed from " + state + " to " + newParticipantState);
+            response.setResult(true);
+            response.setMessage("Participant state changed from " + state + " to " + newParticipantState);
             state = newParticipantState;
         }
     }
@@ -150,9 +152,10 @@ public class ParticipantHandler implements Closeable {
             LOGGER.debug("No participant with this ID {}", definition.getName());
             return null;
         }
-        var response = new ParticipantResponseDetails();
-        handleStateChange(participantState, response);
-        sender.sendResponse(response);
+
+        var participantUpdateAck = new ParticipantUpdateAck();
+        handleStateChange(participantState, participantUpdateAck);
+        sender.sendParticipantUpdateAck(participantUpdateAck);
         return getParticipant(definition.getName(), definition.getVersion());
     }
 
@@ -257,6 +260,8 @@ public class ParticipantHandler implements Closeable {
         participantUpdateAck.setResponseTo(messageId);
         participantUpdateAck.setMessage("Participant Update Ack message");
         participantUpdateAck.setResult(true);
+        participantUpdateAck.setParticipantId(participantId);
+        participantUpdateAck.setParticipantType(participantType);
 
         sender.sendParticipantUpdateAck(participantUpdateAck);
     }
@@ -270,7 +275,6 @@ public class ParticipantHandler implements Closeable {
         heartbeat.setParticipantStatistics(participantStatistics);
         heartbeat.setParticipantType(participantType);
         heartbeat.setHealthStatus(healthStatus);
-        heartbeat.setMessage("Participant heartbeat message sent from -> " + participantId.getName());
         return heartbeat;
     }
 }