Remove client code from apex-pdp

Removal of the deployment and monitoring client from the apex-pdp as
the functionality is replaced by the Policy Framework deployment using
PAP and the Policy Framework monitoring GUI.

Code in the engine proper that was used to administer apex-pdp over the
Web Socket port is also removed, as this code was only used by the
apex-pdp legacy GUIs.

Issue-ID: POLICY-2621
Change-Id: Ib9fc4a667a4bc79377bb7b82fae6a2bd520a3e3d
Signed-off-by: liamfallon <liam.fallon@est.tech>

5 files changed, 39 insertions, 667 deletions

diff --git a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/engdep/EngDepMessageListener.java b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/engdep/EngDepMessageListener.java
deleted file mode 100644
index 113d71cfe..000000000
--- a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/engdep/EngDepMessageListener.java
+++ /dev/null
@@ -1,482 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019 Nordix Foundation.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.service.engine.engdep;
-
-import com.google.common.eventbus.Subscribe;
-import java.net.InetAddress;
-import java.net.UnknownHostException;
-import java.util.Collection;
-import java.util.List;
-import java.util.concurrent.BlockingQueue;
-import java.util.concurrent.LinkedBlockingDeque;
-import java.util.concurrent.TimeUnit;
-import org.java_websocket.WebSocket;
-import org.onap.policy.apex.core.infrastructure.messaging.MessageHolder;
-import org.onap.policy.apex.core.infrastructure.messaging.MessageListener;
-import org.onap.policy.apex.core.infrastructure.messaging.impl.ws.messageblock.MessageBlock;
-import org.onap.policy.apex.core.infrastructure.messaging.util.MessagingUtils;
-import org.onap.policy.apex.core.infrastructure.threading.ThreadUtilities;
-import org.onap.policy.apex.core.protocols.Message;
-import org.onap.policy.apex.core.protocols.engdep.EngDepAction;
-import org.onap.policy.apex.core.protocols.engdep.messages.EngineServiceInfoResponse;
-import org.onap.policy.apex.core.protocols.engdep.messages.GetEngineInfo;
-import org.onap.policy.apex.core.protocols.engdep.messages.GetEngineServiceInfo;
-import org.onap.policy.apex.core.protocols.engdep.messages.GetEngineStatus;
-import org.onap.policy.apex.core.protocols.engdep.messages.Response;
-import org.onap.policy.apex.core.protocols.engdep.messages.StartEngine;
-import org.onap.policy.apex.core.protocols.engdep.messages.StartPeriodicEvents;
-import org.onap.policy.apex.core.protocols.engdep.messages.StopEngine;
-import org.onap.policy.apex.core.protocols.engdep.messages.StopPeriodicEvents;
-import org.onap.policy.apex.core.protocols.engdep.messages.UpdateModel;
-import org.onap.policy.apex.model.basicmodel.concepts.ApexException;
-import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
-import org.onap.policy.apex.service.engine.runtime.EngineService;
-import org.slf4j.ext.XLogger;
-import org.slf4j.ext.XLoggerFactory;
-
-/**
- * The listener interface for receiving engDepMessage events. The class that is interested in processing a engDepMessage
- * event implements this interface, and the object created with that class is registered with a component using the
- * component's <code>addEngDepMessageListener</code> method. When the engDepMessage event occurs, that object's
- * appropriate method is invoked.
- *
- * <p>This class uses a queue to buffer incoming messages. When the listener is called, it places the incoming message
- * on the queue. A thread runs which removes the messages from the queue and forwards them to the Apex engine.
- *
- * @author Sajeevan Achuthan (sajeevan.achuthan@ericsson.com)
- */
-public class EngDepMessageListener implements MessageListener<Message>, Runnable {
-    private static final int LISTENER_STOP_WAIT_INTERVAL = 10;
-
-    private static final XLogger LOGGER = XLoggerFactory.getXLogger(EngDepMessageListener.class);
-
-    // The timeout to wait between queue poll timeouts in milliseconds
-    private static final long QUEUE_POLL_TIMEOUT = 50;
-
-    // The Apex service itself
-    private final EngineService apexService;
-
-    // The message listener thread and stopping flag
-    private Thread messageListenerThread;
-    private volatile boolean stopOrderedFlag = false;
-
-    // The message queue is used to hold messages prior to forwarding to Apex
-    private final BlockingQueue<MessageBlock<Message>> messageQueue = new LinkedBlockingDeque<>();
-
-    /**
-     * Instantiates a new EngDep message listener for listening for messages coming in from the Deployment client. The
-     * <code>apexService</code> is the Apex service to send the messages onto.
-     *
-     * @param apexService the Apex engine service
-     */
-    protected EngDepMessageListener(final EngineService apexService) {
-        this.apexService = apexService;
-    }
-
-    /**
-     * This method is an implementation of the message listener. It receives a message and places it on the queue for
-     * processing by the message listening thread.
-     *
-     * @param data the data
-     * @see org.onap.policy.apex.core.infrastructure.messaging.MessageListener#onMessage
-     *      (org.onap.policy.apex.core.infrastructure.messaging.impl.ws.data.Data)
-     */
-    @Subscribe
-    @Override
-    public void onMessage(final MessageBlock<Message> data) {
-        if (LOGGER.isDebugEnabled()) {
-            LOGGER.debug("message received from client application {} port {}",
-                            data.getConnection().getRemoteSocketAddress().getAddress(),
-                            data.getConnection().getRemoteSocketAddress().getPort());
-        }
-        messageQueue.add(data);
-    }
-
-    /**
-     * {@inheritDoc}.
-     */
-    @Override
-    public void onMessage(final String messageString) {
-        throw new UnsupportedOperationException("String messages are not supported on the EngDep protocol");
-    }
-
-    /**
-     * This method gets a new message listening thread from the thread factory and starts it.
-     */
-    public void startProcessorThread() {
-        LOGGER.entry();
-        messageListenerThread = new Thread(this);
-        messageListenerThread.setDaemon(true);
-        messageListenerThread.start();
-        LOGGER.exit();
-    }
-
-    /**
-     * Stops the message listening threads.
-     */
-    public void stopProcessorThreads() {
-        LOGGER.entry();
-        stopOrderedFlag = true;
-
-        while (messageListenerThread.isAlive()) {
-            ThreadUtilities.sleep(LISTENER_STOP_WAIT_INTERVAL);
-        }
-        LOGGER.exit();
-    }
-
-    /**
-     * Runs the message listening thread. Here, the messages come in on the message queue and are processed one by one
-     */
-    @Override
-    public void run() {
-        // Take messages off the queue and forward them to the Apex engine
-        while (!stopOrderedFlag) {
-            pollAndHandleMessage();
-        }
-    }
-
-    /**
-     * Poll the queue for a message and handle that message.
-     */
-    private void pollAndHandleMessage() {
-        try {
-            final MessageBlock<Message> data = messageQueue.poll(QUEUE_POLL_TIMEOUT, TimeUnit.MILLISECONDS);
-            if (data != null) {
-                final List<Message> messages = data.getMessages();
-                for (final Message message : messages) {
-                    handleMessage(message, data.getConnection());
-                }
-            }
-        } catch (final InterruptedException e) {
-            // restore the interrupt status
-            Thread.currentThread().interrupt();
-            LOGGER.debug("message listener execution has been interrupted");
-        }
-    }
-
-    /**
-     * This method handles EngDep messages as they come in. It uses the inevitable switch statement to handle the
-     * messages.
-     *
-     * @param message the incoming EngDep message
-     * @param webSocket the web socket on which the message came in
-     */
-    private void handleMessage(final Message message, final WebSocket webSocket) {
-        LOGGER.entry(webSocket.getRemoteSocketAddress().toString());
-        if (message.getAction() == null) {
-            // This is a response message
-            return;
-        }
-
-        try {
-            LOGGER.debug("Manager action {} being applied to engine", message.getAction());
-
-            // Get and check the incoming action for validity
-            EngDepAction enDepAction = null;
-            if (message.getAction() instanceof EngDepAction) {
-                enDepAction = (EngDepAction) message.getAction();
-            } else {
-                throw new ApexException(message.getAction().getClass().getName()
-                                + "action on received message invalid, action must be of type \"EnDepAction\"");
-            }
-
-            handleIncomingMessages(message, webSocket, enDepAction);
-        } catch (final ApexException e) {
-            LOGGER.warn("apex failed to execute message", e);
-            sendReply(webSocket, message, false, e.getCascadedMessage());
-        } catch (final Exception e) {
-            LOGGER.warn("system failure executing message", e);
-            sendReply(webSocket, message, false, e.getMessage());
-        }
-        LOGGER.exit();
-    }
-
-    /**
-     * Handle incoming EngDep messages.
-     *
-     * @param message the incoming message
-     * @param webSocket the web socket the message came in on
-     * @param enDepAction the action from the message
-     * @throws ApexException on message handling errors
-     */
-    private void handleIncomingMessages(final Message message, final WebSocket webSocket, EngDepAction enDepAction)
-                    throws ApexException {
-        // Handle each incoming message using the inevitable switch statement for the EngDep
-        // protocol
-        switch (enDepAction) {
-            case GET_ENGINE_SERVICE_INFO:
-                handleGetEngineServiceInfoMessage(message, webSocket);
-                break;
-
-            case UPDATE_MODEL:
-                handleUpdateModelMessage(message, webSocket);
-                break;
-
-            case START_ENGINE:
-                handleStartEngineMessage(message, webSocket);
-                break;
-
-            case STOP_ENGINE:
-                handleStopEngineMessage(message, webSocket);
-                break;
-
-            case START_PERIODIC_EVENTS:
-                handleStartPeriodicEventsMessage(message, webSocket);
-                break;
-
-            case STOP_PERIODIC_EVENTS:
-                handleStopPeriodicEventsMessage(message, webSocket);
-                break;
-
-            case GET_ENGINE_STATUS:
-                handleEngineStatusMessage(message, webSocket);
-                break;
-
-            case GET_ENGINE_INFO:
-                handleEngineInfoMessage(message, webSocket);
-                break;
-
-            default:
-                throw new ApexException("action " + enDepAction + " on received message not handled by engine");
-        }
-    }
-
-    /**
-     * Handle the get engine service information message.
-     *
-     * @param message the message
-     * @param webSocket the web socket that the message came on
-     * @throws ApexException on message handling exceptions
-     */
-    private void handleGetEngineServiceInfoMessage(final Message message, final WebSocket webSocket) {
-        final GetEngineServiceInfo engineServiceInformationMessage = (GetEngineServiceInfo) message;
-        LOGGER.debug("getting engine service information for engine service " + apexService.getKey().getId()
-                        + " . . .");
-        // Send a reply with the engine service information
-        sendServiceInfoReply(webSocket, engineServiceInformationMessage, apexService.getKey(),
-                        apexService.getEngineKeys(), apexService.getApexModelKey());
-        LOGGER.debug("returned engine service information for engine service "
-                        + apexService.getKey().getId());
-    }
-
-    /**
-     * Handle the update model message.
-     *
-     * @param message the message
-     * @param webSocket the web socket that the message came on
-     * @throws ApexException on message handling exceptions
-     */
-    private void handleUpdateModelMessage(final Message message, final WebSocket webSocket) throws ApexException {
-        final UpdateModel updateModelMessage = (UpdateModel) message;
-        LOGGER.debug("updating model in engine {} . . .", updateModelMessage.getTarget().getId());
-        // Update the model
-        apexService.updateModel(updateModelMessage.getTarget(), updateModelMessage.getMessageData(),
-                        updateModelMessage.isForceInstall());
-        // Send a reply indicating the message action worked
-        sendReply(webSocket, updateModelMessage, true,
-                        "updated model in engine " + updateModelMessage.getTarget().getId());
-        LOGGER.debug("updated model in engine service {}", updateModelMessage.getTarget().getId());
-    }
-
-    /**
-     * Handle the start engine message.
-     *
-     * @param message the message
-     * @param webSocket the web socket that the message came on
-     * @throws ApexException on message handling exceptions
-     */
-    private void handleStartEngineMessage(final Message message, final WebSocket webSocket) throws ApexException {
-        final StartEngine startEngineMessage = (StartEngine) message;
-        LOGGER.debug("starting engine {} . . .", startEngineMessage.getTarget().getId());
-        // Start the engine
-        apexService.start(startEngineMessage.getTarget());
-        // Send a reply indicating the message action worked
-        sendReply(webSocket, startEngineMessage, true,
-                        "started engine " + startEngineMessage.getTarget().getId());
-        LOGGER.debug("started engine {}", startEngineMessage.getTarget().getId());
-    }
-
-    /**
-     * Handle the stop engine message.
-     *
-     * @param message the message
-     * @param webSocket the web socket that the message came on
-     * @throws ApexException on message handling exceptions
-     */
-    private void handleStopEngineMessage(final Message message, final WebSocket webSocket) throws ApexException {
-        final StopEngine stopEngineMessage = (StopEngine) message;
-        LOGGER.debug("stopping engine {} . . .", stopEngineMessage.getTarget().getId());
-        // Stop the engine
-        apexService.stop(stopEngineMessage.getTarget());
-        // Send a reply indicating the message action worked
-        sendReply(webSocket, stopEngineMessage, true,
-                        "stopped engine " + stopEngineMessage.getTarget().getId());
-        LOGGER.debug("stopping engine {}", stopEngineMessage.getTarget().getId());
-    }
-
-    /**
-     * Handle the start periodic events message.
-     *
-     * @param message the message
-     * @param webSocket the web socket that the message came on
-     * @throws ApexException on message handling exceptions
-     */
-    private void handleStartPeriodicEventsMessage(final Message message, final WebSocket webSocket)
-                    throws ApexException {
-        final StartPeriodicEvents startPeriodicEventsMessage = (StartPeriodicEvents) message;
-        LOGGER.debug("starting periodic events on engine {} . . .",
-                        startPeriodicEventsMessage.getTarget().getId());
-        // Start periodic events with the period specified in the message
-        final Long period = Long.parseLong(startPeriodicEventsMessage.getMessageData());
-        apexService.startPeriodicEvents(period);
-        // Send a reply indicating the message action worked
-        String periodicStartedMessage = "started periodic events on engine "
-                        + startPeriodicEventsMessage.getTarget().getId() + " with period " + period;
-        sendReply(webSocket, startPeriodicEventsMessage, true, periodicStartedMessage);
-        LOGGER.debug(periodicStartedMessage);
-    }
-
-    /**
-     * Handle the stop periodic events message.
-     *
-     * @param message the message
-     * @param webSocket the web socket that the message came on
-     * @throws ApexException on message handling exceptions
-     */
-    private void handleStopPeriodicEventsMessage(final Message message, final WebSocket webSocket)
-                    throws ApexException {
-        final StopPeriodicEvents stopPeriodicEventsMessage = (StopPeriodicEvents) message;
-        LOGGER.debug("stopping periodic events on engine {} . . .",
-                        stopPeriodicEventsMessage.getTarget().getId());
-        // Stop periodic events
-        apexService.stopPeriodicEvents();
-        // Send a reply indicating the message action worked
-        sendReply(webSocket, stopPeriodicEventsMessage, true, "stopped periodic events on engine "
-                        + stopPeriodicEventsMessage.getTarget().getId());
-        LOGGER.debug("stopped periodic events on engine " + stopPeriodicEventsMessage.getTarget().getId());
-    }
-
-    /**
-     * Handle the engine status message.
-     *
-     * @param message the message
-     * @param webSocket the web socket that the message came on
-     * @throws ApexException on message handling exceptions
-     */
-    private void handleEngineStatusMessage(final Message message, final WebSocket webSocket) throws ApexException {
-        final GetEngineStatus getEngineStatusMessage = (GetEngineStatus) message;
-        LOGGER.debug("getting status for engine{} . . .", getEngineStatusMessage.getTarget().getId());
-        // Send a reply with the engine status
-        sendReply(webSocket, getEngineStatusMessage, true,
-                        apexService.getStatus(getEngineStatusMessage.getTarget()));
-        LOGGER.debug("returned status for engine {}", getEngineStatusMessage.getTarget().getId());
-    }
-
-    /**
-     * Handle the engine information message.
-     *
-     * @param message the message
-     * @param webSocket the web socket that the message came on
-     * @throws ApexException on message handling exceptions
-     */
-    private void handleEngineInfoMessage(final Message message, final WebSocket webSocket) throws ApexException {
-        final GetEngineInfo getEngineInfo = (GetEngineInfo) message;
-        LOGGER.debug("getting runtime information for engine {} . . .", getEngineInfo.getTarget().getId());
-        // Send a reply with the engine runtime information
-        sendReply(webSocket, getEngineInfo, true, apexService.getRuntimeInfo(getEngineInfo.getTarget()));
-        LOGGER.debug("returned runtime information for engine {}", getEngineInfo.getTarget().getId());
-    }
-
-    /**
-     * Get the local address for the WS MessageHolder, or null if there is a problem.
-     */
-    private InetAddress getLocalAddress() {
-        try {
-            return MessagingUtils.getLocalHostLanAddress();
-        } catch (UnknownHostException e) {
-            LOGGER.debug("failed to find the localhost address - continuing ...", e);
-            return null;
-        }
-    }
-
-    /**
-     * Send the Response message to the client.
-     *
-     * @param client the client to which to send the response message
-     * @param requestMessage the message to which we are responding
-     * @param result the result indicating success or failure
-     * @param messageData the message data
-     */
-    private void sendReply(final WebSocket client, final Message requestMessage, final boolean result,
-                    final String messageData) {
-        LOGGER.entry(result, messageData);
-
-        if (client == null || !client.isOpen()) {
-            LOGGER.debug("error sending reply {}, client has disconnected", requestMessage.getAction());
-            return;
-        }
-
-        String replyString = "sending " + requestMessage.getAction() + " to web socket "
-                        + client.getRemoteSocketAddress().toString();
-        LOGGER.debug(replyString);
-
-        final Response responseMessage = new Response(requestMessage.getTarget(), result, requestMessage);
-        responseMessage.setMessageData(messageData);
-
-        final MessageHolder<Message> messageHolder = new MessageHolder<>(getLocalAddress());
-        messageHolder.addMessage(responseMessage);
-        client.send(MessagingUtils.serializeObject(messageHolder));
-
-        LOGGER.exit();
-    }
-
-    /**
-     * Send the EngineServiceInfoResponse message to the client.
-     *
-     * @param client the client to which to send the response message
-     * @param requestMessage the message to which we are responding
-     * @param engineServiceKey The key of this engine service
-     * @param engineKeyCollection The keys of the engines in this engine service
-     * @param apexModelKey the apex model key
-     */
-    private void sendServiceInfoReply(final WebSocket client, final Message requestMessage,
-                    final AxArtifactKey engineServiceKey, final Collection<AxArtifactKey> engineKeyCollection,
-                    final AxArtifactKey apexModelKey) {
-        LOGGER.entry();
-        String sendingMessage = "sending " + requestMessage.getAction() + " to web socket "
-                        + client.getRemoteSocketAddress().toString();
-        LOGGER.debug(sendingMessage);
-
-        final EngineServiceInfoResponse responseMessage = new EngineServiceInfoResponse(requestMessage.getTarget(),
-                        true, requestMessage);
-        responseMessage.setMessageData("engine service information");
-        responseMessage.setEngineServiceKey(engineServiceKey);
-        responseMessage.setEngineKeyArray(engineKeyCollection);
-        responseMessage.setApexModelKey(apexModelKey);
-
-        final MessageHolder<Message> messageHolder = new MessageHolder<>(getLocalAddress());
-        messageHolder.addMessage(responseMessage);
-        client.send(MessagingUtils.serializeObject(messageHolder));
-
-        LOGGER.exit();
-    }
-}
diff --git a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/engdep/EngDepMessagingService.java b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/engdep/EngDepMessagingService.java
deleted file mode 100644
index 91c1fb13c..000000000
--- a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/engdep/EngDepMessagingService.java
+++ /dev/null
@@ -1,113 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * 
- *      http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- * 
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.apex.service.engine.engdep;
-
-import java.net.InetSocketAddress;
-import org.onap.policy.apex.core.infrastructure.messaging.MessagingService;
-import org.onap.policy.apex.core.infrastructure.messaging.MessagingServiceFactory;
-import org.onap.policy.apex.core.infrastructure.messaging.util.MessagingUtils;
-import org.onap.policy.apex.core.protocols.Message;
-import org.onap.policy.apex.service.engine.runtime.EngineService;
-import org.slf4j.ext.XLogger;
-import org.slf4j.ext.XLoggerFactory;
-
-/**
- * The Class EngDepMessagingService is used to encapsulate the server side of EngDep communication. This class allows
- * users to create and start an EngDep server.
- *
- * @author Liam Fallon (liam.fallon@ericsson.com)
- */
-public class EngDepMessagingService {
-    private static final XLogger LOGGER = XLoggerFactory.getXLogger(EngDepMessagingService.class);
-
-    private final MessagingService<Message> messageService;
-
-    // The listener that is listening for messages coming in on the EngDep protocol from clients
-    private final EngDepMessageListener messageListener;
-
-    /**
-     * Instantiates a new EngDep messaging service. It creates the message service instance, a listener for incoming
-     * messages, and starts the message listener thread for handling incoming messages.
-     *
-     * @param service the Apex engine service that this EngDep service is running for
-     * @param port the port The port to use for EngDep communication
-     */
-    public EngDepMessagingService(final EngineService service, final int port) {
-        LOGGER.entry(service);
-
-        // Create the service and listener and add the listener.
-        messageService = getMessageService(port);
-        messageListener = new EngDepMessageListener(service);
-        messageService.addMessageListener(messageListener);
-
-        // Start incoming message processing on the listener
-        messageListener.startProcessorThread();
-        LOGGER.exit();
-    }
-
-    /**
-     * Start the server, open the communication mechanism for connections.
-     */
-    public void start() {
-        LOGGER.info("engine<-->deployment messaging starting . . .");
-        messageService.startConnection();
-        LOGGER.info("engine<-->deployment messaging started");
-    }
-
-    /**
-     * Start the server, close the communication mechanism.
-     */
-    public void stop() {
-        LOGGER.info("engine<-->deployment messaging stopping . . .");
-        messageService.stopConnection();
-        messageListener.stopProcessorThreads();
-        LOGGER.info("engine<-->deployment messaging stopped");
-    }
-
-    /**
-     * Is the server started?.
-     *
-     * @return true, if checks if is started
-     */
-    public boolean isStarted() {
-        return messageService.isStarted();
-    }
-
-    /**
-     * Is the server stopped?.
-     *
-     * @return true, if checks if is stopped
-     */
-    public boolean isStopped() {
-        return !messageService.isStarted();
-    }
-
-    /**
-     * Get a message service instance. This method is protected so that it can be intercepted in unit test.
-     * @param port the message service port
-     * @return the message service
-     */
-    protected MessagingService<Message> getMessageService(final int port) {
-        // Messaging service is used to transmit and receive messages over a communication protocol
-        MessagingServiceFactory<Message> factory = new MessagingServiceFactory<>();
-        return factory.createServer(new InetSocketAddress(MessagingUtils.checkPort(port)));
-    }
-}
diff --git a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/engdep/package-info.java b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/engdep/package-info.java
deleted file mode 100644
index 41f644465..000000000
--- a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/engdep/package-info.java
+++ /dev/null
@@ -1,26 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * 
- *      http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- * 
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-/**
- * Gives access to the APEX EngDep protocol for APEX engine management at runtime over a Java API.
- *
- * @author Liam Fallon (liam.fallon@ericsson.com)
- */
-package org.onap.policy.apex.service.engine.engdep;
diff --git a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/main/ApexActivator.java b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/main/ApexActivator.java
index a928f208c..233fa1aa0 100644
--- a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/main/ApexActivator.java
+++ b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/main/ApexActivator.java
@@ -43,7 +43,6 @@ import org.onap.policy.apex.model.basicmodel.service.ModelService;
 import org.onap.policy.apex.model.enginemodel.concepts.AxEngineModel;
 import org.onap.policy.apex.model.policymodel.concepts.AxPolicyModel;
 import org.onap.policy.apex.model.policymodel.handling.PolicyModelMerger;
-import org.onap.policy.apex.service.engine.engdep.EngDepMessagingService;
 import org.onap.policy.apex.service.engine.event.ApexEventException;
 import org.onap.policy.apex.service.engine.runtime.EngineService;
 import org.onap.policy.apex.service.engine.runtime.impl.EngineServiceImpl;
@@ -58,8 +57,8 @@ import org.slf4j.ext.XLogger;
 import org.slf4j.ext.XLoggerFactory;
 
 /**
- * This class wraps an Apex engine so that it can be activated as a complete service together with all its context,
- * executor, and event plugins.
+ * This class wraps an Apex engine so that it can be activated as a complete
+ * service together with all its context, executor, and event plugins.
  *
  * @author Liam Fallon (liam.fallon@ericsson.com)
  */
@@ -83,7 +82,8 @@ public class ApexActivator {
     // Event marshalers are used to send events asynchronously from Apex
     private final Map<String, ApexEventMarshaller> marshallerMap = new LinkedHashMap<>();
 
-    // The engine service handler holds the references to the engine and its EngDep deployment
+    // The engine service handler holds the references to the engine and its EngDep
+    // deployment
     // interface. It also acts as a receiver for asynchronous
     // and synchronous events from the engine.
     private ApexEngineServiceHandler engineServiceHandler = null;
@@ -130,8 +130,8 @@ public class ApexActivator {
         policyModelsMap = new LinkedHashMap<>();
         Map<String, EventHandlerParameters> inputParametersMap = new LinkedHashMap<>();
         Map<String, EventHandlerParameters> outputParametersMap = new LinkedHashMap<>();
-        Set<Entry<ToscaPolicyIdentifier, ApexParameters>> apexParamsEntrySet =
-            new LinkedHashSet<>(apexParametersMap.entrySet());
+        Set<Entry<ToscaPolicyIdentifier, ApexParameters>> apexParamsEntrySet = new LinkedHashSet<>(
+            apexParametersMap.entrySet());
         apexParamsEntrySet.stream().forEach(apexParamsEntry -> {
             ApexParameters apexParams = apexParamsEntry.getValue();
             List<String> duplicateInputParameters = new ArrayList<>(apexParams.getEventInputParameters().keySet());
@@ -180,11 +180,12 @@ public class ApexActivator {
     }
 
     private AxPolicyModel aggregatePolicyModels(Map<ToscaPolicyIdentifier, AxPolicyModel> policyModelsMap) {
-        // Doing a deep copy so that original values in policyModelsMap is retained after reduction operation
+        // Doing a deep copy so that original values in policyModelsMap is retained
+        // after reduction operation
         Set<Entry<ToscaPolicyIdentifier, AxPolicyModel>> policyModelsEntries = policyModelsMap.entrySet().stream()
             .map(entry -> new AbstractMap.SimpleEntry<>(entry.getKey(), entry.getValue())).collect(Collectors.toSet());
-        Optional<Entry<ToscaPolicyIdentifier, AxPolicyModel>> finalPolicyModelEntry =
-            policyModelsEntries.stream().reduce((entry1, entry2) -> {
+        Optional<Entry<ToscaPolicyIdentifier, AxPolicyModel>> finalPolicyModelEntry = policyModelsEntries.stream()
+            .reduce((entry1, entry2) -> {
                 try {
                     entry1.setValue(
                         PolicyModelMerger.getMergedPolicyModel(entry1.getValue(), entry2.getValue(), true, true));
@@ -207,7 +208,8 @@ public class ApexActivator {
         Map<String, EventHandlerParameters> inputParametersMap, Map<String, EventHandlerParameters> outputParametersMap)
         throws ApexEventException {
 
-        // Producer parameters specify what event marshalers to handle events leaving Apex are
+        // Producer parameters specify what event marshalers to handle events leaving
+        // Apex are
         // set up and how they are set up
         for (Entry<String, EventHandlerParameters> outputParameters : outputParametersMap.entrySet()) {
             final ApexEventMarshaller marshaller = new ApexEventMarshaller(outputParameters.getKey(),
@@ -217,7 +219,8 @@ public class ApexActivator {
             marshallerMap.put(outputParameters.getKey(), marshaller);
         }
 
-        // Consumer parameters specify what event unmarshalers to handle events coming into Apex
+        // Consumer parameters specify what event unmarshalers to handle events coming
+        // into Apex
         // are set up and how they are set up
         for (final Entry<String, EventHandlerParameters> inputParameters : inputParametersMap.entrySet()) {
             final ApexEventUnmarshaller unmarshaller = new ApexEventUnmarshaller(inputParameters.getKey(),
@@ -229,7 +232,8 @@ public class ApexActivator {
 
     private void handleExistingMarshallerAndUnmarshaller(Map<String, EventHandlerParameters> inputParametersMap,
         Map<String, EventHandlerParameters> outputParametersMap) {
-        // stop and remove any marshaller/unmarshaller that is part of a policy that is undeployed
+        // stop and remove any marshaller/unmarshaller that is part of a policy that is
+        // undeployed
         marshallerMap.entrySet().stream()
             .filter(marshallerEntry -> !outputParametersMap.containsKey(marshallerEntry.getKey()))
             .forEach(marshallerEntry -> marshallerEntry.getValue().stop());
@@ -239,7 +243,8 @@ public class ApexActivator {
             .forEach(unmarshallerEntry -> unmarshallerEntry.getValue().stop());
         unmarshallerMap.keySet().removeIf(unmarshallerKey -> !inputParametersMap.containsKey(unmarshallerKey));
 
-        // If a marshaller/unmarshaller is already initialized, they don't need to be reinitialized during model update.
+        // If a marshaller/unmarshaller is already initialized, they don't need to be
+        // reinitialized during model update.
         outputParametersMap.keySet().removeIf(marshallerMap::containsKey);
         inputParametersMap.keySet().removeIf(unmarshallerMap::containsKey);
     }
@@ -252,20 +257,16 @@ public class ApexActivator {
         LOGGER.debug("starting apex engine service . . .");
         apexEngineService = EngineServiceImpl.create(apexParameters.getEngineServiceParameters());
 
-        // Instantiate and start the messaging service for Deployment
-        LOGGER.debug("starting apex deployment service . . .");
-        final EngDepMessagingService engDepService = new EngDepMessagingService(apexEngineService,
-            apexParameters.getEngineServiceParameters().getDeploymentPort());
-        engDepService.start();
-
-        // Create the engine holder to hold the engine's references and act as an event receiver
-        engineServiceHandler = new ApexEngineServiceHandler(apexEngineService, engDepService);
+        // Create the engine holder to hold the engine's references and act as an event
+        // receiver
+        engineServiceHandler = new ApexEngineServiceHandler(apexEngineService);
     }
 
     /**
-     * Set up unmarshaler/marshaler pairing for synchronized event handling. We only need to traverse the unmarshalers
-     * because the unmarshalers and marshalers are paired one to one uniquely so if we find a synchronized unmarshaler
-     * we'll also find its paired marshaler
+     * Set up unmarshaler/marshaler pairing for synchronized event handling. We only
+     * need to traverse the unmarshalers because the unmarshalers and marshalers are
+     * paired one to one uniquely so if we find a synchronized unmarshaler we'll
+     * also find its paired marshaler
      *
      * @param inputParametersMap the apex parameters
      */
@@ -278,8 +279,8 @@ public class ApexActivator {
                 // Check if the unmarshaler is synchronized with a marshaler
                 if (inputParameters.getValue().isPeeredMode(peeredMode)) {
                     // Find the unmarshaler and marshaler
-                    final ApexEventMarshaller peeredMarshaler =
-                        marshallerMap.get(inputParameters.getValue().getPeer(peeredMode));
+                    final ApexEventMarshaller peeredMarshaler = marshallerMap
+                        .get(inputParameters.getValue().getPeer(peeredMode));
 
                     // Connect the unmarshaler and marshaler
                     unmarshaller.connectMarshaler(peeredMode, peeredMarshaler);
@@ -289,7 +290,8 @@ public class ApexActivator {
     }
 
     /**
-     * Start up event processing, this happens once all marshaller to unmarshaller wiring has been done.
+     * Start up event processing, this happens once all marshaller to unmarshaller
+     * wiring has been done.
      *
      * @param inputParametersMap the apex parameters
      */
diff --git a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/main/ApexEngineServiceHandler.java b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/main/ApexEngineServiceHandler.java
index 516ea4f2a..f278fd59d 100644
--- a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/main/ApexEngineServiceHandler.java
+++ b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/main/ApexEngineServiceHandler.java
@@ -1,19 +1,20 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
+ *  Modifications Copyright (C) 2020 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- * 
+ *
  * SPDX-License-Identifier: Apache-2.0
  * ============LICENSE_END=========================================================
  */
@@ -21,16 +22,15 @@
 package org.onap.policy.apex.service.engine.main;
 
 import org.onap.policy.apex.model.basicmodel.concepts.ApexException;
-import org.onap.policy.apex.service.engine.engdep.EngDepMessagingService;
 import org.onap.policy.apex.service.engine.event.ApexEvent;
 import org.onap.policy.apex.service.engine.runtime.EngineService;
 import org.slf4j.ext.XLogger;
 import org.slf4j.ext.XLoggerFactory;
 
 /**
- * The Class ApexEngineServiceHandler holds the reference to the Apex engine service and the EngDep
- * service for that engine. It also acts as an event receiver for asynchronous and synchronous
- * events.
+ * The Class ApexEngineServiceHandler holds the reference to the Apex engine
+ * service and the EngDep service for that engine. It also acts as an event
+ * receiver for asynchronous and synchronous events.
  */
 public class ApexEngineServiceHandler {
     // The logger for this class
@@ -39,23 +39,19 @@ public class ApexEngineServiceHandler {
     // The Apex engine service, the Apex engine itself
     private final EngineService apexEngineService;
 
-    // The interface between the Apex engine and Apex policy deployment for the Apex engine
-    private final EngDepMessagingService engDepService;
-
     /**
      * Instantiates a new engine holder with its engine service and EngDep service.
      *
      * @param apexEngineService the apex engine service
-     * @param engDepService the EngDep service
+     * @param engDepService     the EngDep service
      */
-    ApexEngineServiceHandler(final EngineService apexEngineService, final EngDepMessagingService engDepService) {
+    ApexEngineServiceHandler(final EngineService apexEngineService) {
         this.apexEngineService = apexEngineService;
-        this.engDepService = engDepService;
     }
 
     /**
      * This method forwards an event to the Apex service.
-     * 
+     *
      * @param apexEvent The event to forward to Apex
      */
     public void forwardEvent(final ApexEvent apexEvent) {
@@ -75,11 +71,6 @@ public class ApexEngineServiceHandler {
      * @throws ApexException on termination errors
      */
     public void terminate() throws ApexException {
-        // Shut down engine management
-        if (engDepService != null) {
-            engDepService.stop();
-        }
-
         // Shut down each engine instance
         if (apexEngineService != null) {
             apexEngineService.stop();