Adding pdp simulator for testing purposes2.0.12.0.0

Change-Id: I809e229bf363f3b18942b20521b05e2dc06643b4
Issue-ID: POLICY-1768
Signed-off-by: a.sreekumar <ajith.sreekumar@est.tech>

26 files changed, 2010 insertions, 0 deletions

diff --git a/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/PdpSimulatorActivator.java b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/PdpSimulatorActivator.java
new file mode 100644
index 000000000..be396de05
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/PdpSimulatorActivator.java
@@ -0,0 +1,212 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  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.models.sim.pdp;
+
+import java.util.List;
+import java.util.Properties;
+
+import lombok.Getter;
+import lombok.Setter;
+
+
+import org.onap.policy.common.endpoints.event.comm.TopicEndpoint;
+import org.onap.policy.common.endpoints.event.comm.TopicSink;
+import org.onap.policy.common.endpoints.event.comm.TopicSource;
+import org.onap.policy.common.endpoints.listeners.MessageTypeDispatcher;
+import org.onap.policy.common.utils.services.Registry;
+import org.onap.policy.common.utils.services.ServiceManager;
+import org.onap.policy.common.utils.services.ServiceManagerException;
+import org.onap.policy.models.pdp.enums.PdpMessageType;
+import org.onap.policy.models.sim.pdp.comm.PdpStateChangeListener;
+import org.onap.policy.models.sim.pdp.comm.PdpStatusPublisher;
+import org.onap.policy.models.sim.pdp.comm.PdpUpdateListener;
+import org.onap.policy.models.sim.pdp.exception.PdpSimulatorException;
+import org.onap.policy.models.sim.pdp.exception.PdpSimulatorRunTimeException;
+import org.onap.policy.models.sim.pdp.handler.PdpMessageHandler;
+import org.onap.policy.models.sim.pdp.parameters.PdpSimulatorParameterGroup;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * This class activates the PdpSimulator as a complete service together with all its handlers.
+ *
+ * @author Ajith Sreekumar (ajith.sreekumar@est.tech)
+ */
+public class PdpSimulatorActivator {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(PdpSimulatorActivator.class);
+    private final PdpSimulatorParameterGroup pdpSimulatorParameterGroup;
+    private List<TopicSink> topicSinks;// topics to which pdp sends pdp status
+    private List<TopicSource> topicSources; // topics to which pdp listens to for messages from pap.
+    private static final String[] MSG_TYPE_NAMES = { "messageName" };
+
+    /**
+     * Listens for messages on the topic, decodes them into a message, and then dispatches them.
+     */
+    private final MessageTypeDispatcher msgDispatcher;
+
+    /**
+     * Used to manage the services.
+     */
+    private ServiceManager manager;
+
+
+    @Getter
+    @Setter(lombok.AccessLevel.PRIVATE)
+    private volatile boolean alive = false;
+
+    /**
+     * Instantiate the activator for onappf PDP-A.
+     *
+     * @param pdpSimulatorParameterGroup the parameters for the onappf PDP-A service
+     * @param topicProperties properties used to configure the topics
+     */
+    public PdpSimulatorActivator(final PdpSimulatorParameterGroup pdpSimulatorParameterGroup,
+            final Properties topicProperties) {
+
+        topicSinks = TopicEndpoint.manager.addTopicSinks(topicProperties);
+        topicSources = TopicEndpoint.manager.addTopicSources(topicProperties);
+
+        final int random = (int) (Math.random() * 1000);
+        final String instanceId = "pdp_" + random;
+        LOGGER.debug("PdpSimulatorActivator initializing with instance id:" + instanceId);
+        try {
+            this.pdpSimulatorParameterGroup = pdpSimulatorParameterGroup;
+            this.msgDispatcher = new MessageTypeDispatcher(MSG_TYPE_NAMES);
+        } catch (final RuntimeException e) {
+            throw new PdpSimulatorRunTimeException(e);
+        }
+
+        final PdpUpdateListener pdpUpdateListener = new PdpUpdateListener();
+        final PdpStateChangeListener pdpStateChangeListener = new PdpStateChangeListener();
+        // @formatter:off
+        this.manager = new ServiceManager()
+            .addAction("topics",
+                () -> TopicEndpoint.manager.start(),
+                () -> TopicEndpoint.manager.shutdown())
+            .addAction("set alive",
+                () -> setAlive(true),
+                () -> setAlive(false))
+            .addAction("register pdp status context object",
+                () -> Registry.register(PdpSimulatorConstants.REG_PDP_STATUS_OBJECT,
+                        new PdpMessageHandler().createPdpStatusFromParameters(instanceId,
+                                pdpSimulatorParameterGroup.getPdpStatusParameters())),
+                () -> Registry.unregister(PdpSimulatorConstants.REG_PDP_STATUS_OBJECT))
+            .addAction("topic sinks",
+                () -> Registry.register(PdpSimulatorConstants.REG_PDP_TOPIC_SINKS, topicSinks),
+                () -> Registry.unregister(PdpSimulatorConstants.REG_PDP_TOPIC_SINKS))
+            .addAction("Pdp Status publisher",
+                () -> Registry.register(PdpSimulatorConstants.REG_PDP_STATUS_PUBLISHER,
+                        new PdpStatusPublisher(topicSinks,
+                                pdpSimulatorParameterGroup.getPdpStatusParameters().getTimeIntervalMs())),
+                () -> stopAndRemovePdpStatusPublisher())
+            .addAction("Register pdp update listener",
+                () -> msgDispatcher.register(PdpMessageType.PDP_UPDATE.name(), pdpUpdateListener),
+                () -> msgDispatcher.unregister(PdpMessageType.PDP_UPDATE.name()))
+            .addAction("Register pdp state change request dispatcher",
+                () -> msgDispatcher.register(PdpMessageType.PDP_STATE_CHANGE.name(), pdpStateChangeListener),
+                () -> msgDispatcher.unregister(PdpMessageType.PDP_STATE_CHANGE.name()))
+            .addAction("Message Dispatcher",
+                () -> registerMsgDispatcher(),
+                () -> unregisterMsgDispatcher());
+
+        // @formatter:on
+    }
+
+    /**
+     * Method to stop and unregister the pdp status publisher.
+     */
+    private void stopAndRemovePdpStatusPublisher() {
+        final PdpStatusPublisher pdpStatusPublisher =
+                Registry.get(PdpSimulatorConstants.REG_PDP_STATUS_PUBLISHER, PdpStatusPublisher.class);
+        pdpStatusPublisher.terminate();
+        Registry.unregister(PdpSimulatorConstants.REG_PDP_STATUS_PUBLISHER);
+    }
+
+    /**
+     * Initialize PdpSimulator service.
+     *
+     * @throws PdpSimulatorException on errors in initializing the service
+     */
+    public void initialize() throws PdpSimulatorException {
+        if (isAlive()) {
+            throw new IllegalStateException("activator already initialized");
+        }
+
+        try {
+            LOGGER.debug("PdpSimulator starting as a service . . .");
+            manager.start();
+            LOGGER.debug("PdpSimulator started as a service");
+        } catch (final ServiceManagerException exp) {
+            LOGGER.error("PdpSimulator service startup failed");
+            throw new PdpSimulatorException(exp.getMessage(), exp);
+        }
+    }
+
+    /**
+     * Terminate PdpSimulator.
+     *
+     * @throws PdpSimulatorException on errors in terminating the service
+     */
+    public void terminate() throws PdpSimulatorException {
+        if (!isAlive()) {
+            throw new IllegalStateException("activator is not running");
+        }
+        try {
+            final PdpStatusPublisher pdpStatusPublisher =
+                    Registry.get(PdpSimulatorConstants.REG_PDP_STATUS_PUBLISHER, PdpStatusPublisher.class);
+            // send a final heartbeat with terminated status
+            pdpStatusPublisher.send(new PdpMessageHandler().getTerminatedPdpStatus());
+            manager.stop();
+            Registry.unregister(PdpSimulatorConstants.REG_PDP_SIMULATOR_ACTIVATOR);
+        } catch (final ServiceManagerException exp) {
+            LOGGER.error("PdpSimulator termination failed");
+            throw new PdpSimulatorException(exp.getMessage(), exp);
+        }
+    }
+
+    /**
+     * Get the parameters used by the activator.
+     *
+     * @return pdpSimulatorParameterGroup the parameters of the activator
+     */
+    public PdpSimulatorParameterGroup getParameterGroup() {
+        return pdpSimulatorParameterGroup;
+    }
+
+    /**
+     * Registers the dispatcher with the topic source(s).
+     */
+    private void registerMsgDispatcher() {
+        for (final TopicSource source : topicSources) {
+            source.register(msgDispatcher);
+        }
+    }
+
+    /**
+     * Unregisters the dispatcher from the topic source(s).
+     */
+    private void unregisterMsgDispatcher() {
+        for (final TopicSource source : topicSources) {
+            source.unregister(msgDispatcher);
+        }
+    }
+}
diff --git a/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/PdpSimulatorCommandLineArguments.java b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/PdpSimulatorCommandLineArguments.java
new file mode 100644
index 000000000..fb517e221
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/PdpSimulatorCommandLineArguments.java
@@ -0,0 +1,300 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  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.models.sim.pdp;
+
+import java.io.File;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.net.URL;
+import java.util.Arrays;
+
+import org.apache.commons.cli.CommandLine;
+import org.apache.commons.cli.DefaultParser;
+import org.apache.commons.cli.HelpFormatter;
+import org.apache.commons.cli.Option;
+import org.apache.commons.cli.Options;
+import org.apache.commons.cli.ParseException;
+import org.apache.log4j.chainsaw.Main;
+
+import org.onap.policy.common.utils.resources.ResourceUtils;
+import org.onap.policy.models.sim.pdp.exception.PdpSimulatorException;
+import org.onap.policy.models.sim.pdp.exception.PdpSimulatorRunTimeException;
+
+/**
+ * This class reads and handles command line parameters for the pdp simulator.
+ *
+ * @author Ajith Sreekumar (ajith.sreekumar@est.tech)
+ */
+public class PdpSimulatorCommandLineArguments {
+
+    private static final String FILE_MESSAGE_PREAMBLE = " file \"";
+    private static final int HELP_LINE_LENGTH = 120;
+
+    private final Options options;
+    private String configurationFilePath = null;
+    private String propertyFilePath = null;
+
+    /**
+     * Construct the options for the CLI editor.
+     */
+    public PdpSimulatorCommandLineArguments() {
+        //@formatter:off
+        options = new Options();
+        options.addOption(Option.builder("h")
+                .longOpt("help")
+                .desc("outputs the usage of this command")
+                .required(false)
+                .type(Boolean.class)
+                .build());
+        options.addOption(Option.builder("v")
+                .longOpt("version")
+                .desc("outputs the version of pdp simulator")
+                .required(false)
+                .type(Boolean.class)
+                .build());
+        options.addOption(Option.builder("c")
+                .longOpt("config-file")
+                .desc("the full path to the configuration file to use, "
+                        + "the configuration file must be a Json file containing the pdp simulator parameters")
+                .hasArg()
+                .argName("CONFIG_FILE")
+                .required(false)
+                .type(String.class)
+                .build());
+        options.addOption(Option.builder("p")
+                .longOpt("property-file")
+                .desc("the full path to the topic property file to use, "
+                        + "the property file contains the pdp simulator topic properties")
+                .hasArg()
+                .argName("PROP_FILE")
+                .required(false)
+                .type(String.class)
+                .build());
+        //@formatter:on
+    }
+
+    /**
+     * Construct the options for the CLI editor and parse in the given arguments.
+     *
+     * @param args The command line arguments
+     */
+    public PdpSimulatorCommandLineArguments(final String[] args) {
+        // Set up the options with the default constructor
+        this();
+
+        // Parse the arguments
+        try {
+            parse(args);
+        } catch (final PdpSimulatorException e) {
+            throw new PdpSimulatorRunTimeException("parse error on pdp simulator parameters", e);
+        }
+    }
+
+    /**
+     * Parse the command line options.
+     *
+     * @param args The command line arguments
+     * @return a string with a message for help and version, or null if there is no message
+     * @throws PdpSimulatorException on command argument errors
+     */
+    public String parse(final String[] args) throws PdpSimulatorException {
+        // Clear all our arguments
+        setConfigurationFilePath(null);
+        setPropertyFilePath(null);
+
+        CommandLine commandLine = null;
+        try {
+            commandLine = new DefaultParser().parse(options, args);
+        } catch (final ParseException e) {
+            throw new PdpSimulatorException("invalid command line arguments specified : " + e.getMessage());
+        }
+
+        // Arguments left over after Commons CLI does its stuff
+        final String[] remainingArgs = commandLine.getArgs();
+
+        if (remainingArgs.length > 0 && commandLine.hasOption('c') || remainingArgs.length > 0) {
+            throw new PdpSimulatorException("too many command line arguments specified : " + Arrays.toString(args));
+        }
+
+        if (remainingArgs.length == 1) {
+            configurationFilePath = remainingArgs[0];
+        }
+
+        if (commandLine.hasOption('h')) {
+            return help(Main.class.getCanonicalName());
+        }
+
+        if (commandLine.hasOption('v')) {
+            return version();
+        }
+
+        if (commandLine.hasOption('c')) {
+            setConfigurationFilePath(commandLine.getOptionValue('c'));
+        }
+
+        if (commandLine.hasOption('p')) {
+            setPropertyFilePath(commandLine.getOptionValue('p'));
+        }
+
+        return null;
+    }
+
+    /**
+     * Validate the command line options.
+     *
+     * @throws PdpSimulatorException on command argument validation errors
+     */
+    public void validate() throws PdpSimulatorException {
+        validateReadableFile("pdp simulator configuration", configurationFilePath);
+        validateReadableFile("pdp simulator properties", propertyFilePath);
+    }
+
+    /**
+     * Print version information for pdp simulator.
+     *
+     * @return the version string
+     */
+    public String version() {
+        return ResourceUtils.getResourceAsString("src/main/resources/version.txt");
+    }
+
+    /**
+     * Print help information for pdp simulator.
+     *
+     * @param mainClassName the main class name
+     * @return the help string
+     */
+    public String help(final String mainClassName) {
+        final HelpFormatter helpFormatter = new HelpFormatter();
+        final StringWriter stringWriter = new StringWriter();
+        final PrintWriter printWriter = new PrintWriter(stringWriter);
+
+        helpFormatter.printHelp(printWriter, HELP_LINE_LENGTH, mainClassName + " [options...]", "options", options, 0,
+                0, "");
+
+        return stringWriter.toString();
+    }
+
+    /**
+     * Gets the configuration file path.
+     *
+     * @return the configuration file path
+     */
+    public String getConfigurationFilePath() {
+        return configurationFilePath;
+    }
+
+    /**
+     * Gets the full expanded configuration file path.
+     *
+     * @return the configuration file path
+     */
+    public String getFullConfigurationFilePath() {
+        return ResourceUtils.getFilePath4Resource(getConfigurationFilePath());
+    }
+
+    /**
+     * Sets the configuration file path.
+     *
+     * @param configurationFilePath the configuration file path
+     */
+    public void setConfigurationFilePath(final String configurationFilePath) {
+        this.configurationFilePath = configurationFilePath;
+
+    }
+
+    /**
+     * Check set configuration file path.
+     *
+     * @return true, if check set configuration file path
+     */
+    public boolean checkSetConfigurationFilePath() {
+        return configurationFilePath != null && configurationFilePath.length() > 0;
+    }
+
+    /**
+     * Gets the property file path.
+     *
+     * @return the property file path
+     */
+    public String getPropertyFilePath() {
+        return propertyFilePath;
+    }
+
+    /**
+     * Gets the full expanded property file path.
+     *
+     * @return the property file path
+     */
+    public String getFullPropertyFilePath() {
+        return ResourceUtils.getFilePath4Resource(getPropertyFilePath());
+    }
+
+    /**
+     * Sets the property file path.
+     *
+     * @param propertyFilePath the property file path
+     */
+    public void setPropertyFilePath(final String propertyFilePath) {
+        this.propertyFilePath = propertyFilePath;
+
+    }
+
+    /**
+     * Check set property file path.
+     *
+     * @return true, if check set property file path
+     */
+    public boolean checkSetPropertyFilePath() {
+        return propertyFilePath != null && propertyFilePath.length() > 0;
+    }
+
+    /**
+     * Validate readable file.
+     *
+     * @param fileTag the file tag
+     * @param fileName the file name
+     * @throws PdpSimulatorException on the file name passed as a parameter
+     */
+    private void validateReadableFile(final String fileTag, final String fileName) throws PdpSimulatorException {
+        if (fileName == null || fileName.length() == 0) {
+            throw new PdpSimulatorException(fileTag + " file was not specified as an argument");
+        }
+
+        // The file name refers to a resource on the local file system
+        final URL fileUrl = ResourceUtils.getUrl4Resource(fileName);
+        if (fileUrl == null) {
+            throw new PdpSimulatorException(fileTag + FILE_MESSAGE_PREAMBLE + fileName + "\" does not exist");
+        }
+
+        final File theFile = new File(fileUrl.getPath());
+        if (!theFile.exists()) {
+            throw new PdpSimulatorException(fileTag + FILE_MESSAGE_PREAMBLE + fileName + "\" does not exist");
+        }
+        if (!theFile.isFile()) {
+            throw new PdpSimulatorException(fileTag + FILE_MESSAGE_PREAMBLE + fileName + "\" is not a normal file");
+        }
+        if (!theFile.canRead()) {
+            throw new PdpSimulatorException(fileTag + FILE_MESSAGE_PREAMBLE + fileName + "\" is ureadable");
+        }
+    }
+
+}
diff --git a/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/PdpSimulatorConstants.java b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/PdpSimulatorConstants.java
new file mode 100644
index 000000000..22dbc4610
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/PdpSimulatorConstants.java
@@ -0,0 +1,37 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  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.models.sim.pdp;
+
+/**
+ * Names of various items contained in the Registry.
+ */
+public class PdpSimulatorConstants {
+    // Registry keys
+    public static final String REG_PDP_SIMULATOR_ACTIVATOR = "object:activator/pdp_simulator";
+    public static final String REG_PDP_STATUS_OBJECT = "object:pdp/status";
+    public static final String REG_PDP_TOSCA_POLICY_LIST = "object:pdp/tosca/policy/list";
+    public static final String REG_PDP_STATUS_PUBLISHER = "object:pdp/status/publisher";
+    public static final String REG_PDP_TOPIC_SINKS = "object:pdp/topic/sinks";
+
+    private PdpSimulatorConstants() {
+        super();
+    }
+}
diff --git a/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/PdpSimulatorMain.java b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/PdpSimulatorMain.java
new file mode 100644
index 000000000..f5892d5c8
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/PdpSimulatorMain.java
@@ -0,0 +1,167 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  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.models.sim.pdp;
+
+import java.io.FileInputStream;
+import java.util.Arrays;
+import java.util.Properties;
+
+
+import org.onap.policy.common.utils.services.Registry;
+import org.onap.policy.models.sim.pdp.exception.PdpSimulatorException;
+import org.onap.policy.models.sim.pdp.parameters.PdpSimulatorParameterGroup;
+import org.onap.policy.models.sim.pdp.parameters.PdpSimulatorParameterHandler;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * This class initiates PdpSimulator.
+ *
+ * @author Ajith Sreekumar (ajith.sreekumar@est.tech)
+ */
+public class PdpSimulatorMain {
+
+    private static final String PDP_SIMULATOR_FAIL_MSG = "start of pdp simulator failed";
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(PdpSimulatorMain.class);
+
+    private PdpSimulatorActivator activator;
+    private PdpSimulatorParameterGroup parameterGroup;
+
+    /**
+     * Instantiates the PdpSimulator.
+     *
+     * @param args the command line arguments
+     */
+    public PdpSimulatorMain(final String[] args) {
+        LOGGER.info("In PdpSimulator with parameters ", Arrays.toString(args));
+
+        // Check the arguments
+        final PdpSimulatorCommandLineArguments arguments = new PdpSimulatorCommandLineArguments();
+        try {
+            // The arguments return a string if there is a message to print and we should exit
+            final String argumentMessage = arguments.parse(args);
+            if (argumentMessage != null) {
+                LOGGER.debug(argumentMessage);
+                return;
+            }
+            // Validate that the arguments are sane
+            arguments.validate();
+        } catch (final PdpSimulatorException e) {
+            LOGGER.error(PDP_SIMULATOR_FAIL_MSG, e);
+            return;
+        }
+
+        // Read the parameters
+        try {
+            parameterGroup = new PdpSimulatorParameterHandler().getParameters(arguments);
+        } catch (final Exception e) {
+            LOGGER.error(PDP_SIMULATOR_FAIL_MSG, e);
+            return;
+        }
+
+        // Read the properties
+        final Properties topicProperties = new Properties();
+        try {
+            final String propFile = arguments.getFullPropertyFilePath();
+            try (FileInputStream stream = new FileInputStream(propFile)) {
+                topicProperties.load(stream);
+            }
+        } catch (final Exception e) {
+            LOGGER.error(PDP_SIMULATOR_FAIL_MSG, e);
+            return;
+        }
+
+        // create the activator
+        activator = new PdpSimulatorActivator(parameterGroup, topicProperties);
+        Registry.register(PdpSimulatorConstants.REG_PDP_SIMULATOR_ACTIVATOR, activator);
+        // Start the activator
+        try {
+            activator.initialize();
+        } catch (final PdpSimulatorException e) {
+            LOGGER.error("start of PdpSimulator failed, used parameters are {}", Arrays.toString(args), e);
+            Registry.unregister(PdpSimulatorConstants.REG_PDP_SIMULATOR_ACTIVATOR);
+            return;
+        }
+
+        // Add a shutdown hook to shut everything down in an orderly manner
+        Runtime.getRuntime().addShutdownHook(new PdpSimulatorShutdownHookClass());
+
+        LOGGER.info("Started PdpSimulator service");
+    }
+
+    /**
+     * Get the parameters specified in JSON.
+     *
+     * @return parameterGroup the parameters
+     */
+    public PdpSimulatorParameterGroup getParameters() {
+        return parameterGroup;
+    }
+
+
+    /**
+     * Shut down Execution.
+     *
+     * @throws PdpSimulatorException on shutdown errors
+     */
+    public void shutdown() throws PdpSimulatorException {
+        // clear the parameterGroup variable
+        parameterGroup = null;
+
+        // clear the pdp simulator activator
+        if (activator != null && activator.isAlive()) {
+            activator.terminate();
+        }
+    }
+
+    /**
+     * The Class PdpSimulatorShutdownHookClass terminates the pdp simulator when its run method is called.
+     */
+    private class PdpSimulatorShutdownHookClass extends Thread {
+        /*
+         * (non-Javadoc)
+         *
+         * @see java.lang.Runnable#run()
+         */
+        @Override
+        public void run() {
+            try {
+                // Shutdown the pdp simulator service and wait for everything to stop
+                if (activator != null && activator.isAlive()) {
+                    activator.terminate();
+                }
+            } catch (final PdpSimulatorException e) {
+                LOGGER.warn("error occured during shut down of the pdp simulator service", e);
+            }
+        }
+    }
+
+    /**
+     * The main method.
+     *
+     * @param args the arguments
+     *
+     */
+    public static void main(final String[] args) {
+        new PdpSimulatorMain(args);
+    }
+}
diff --git a/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/comm/PdpStateChangeListener.java b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/comm/PdpStateChangeListener.java
new file mode 100644
index 000000000..ebe493a69
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/comm/PdpStateChangeListener.java
@@ -0,0 +1,52 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  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.models.sim.pdp.comm;
+
+import org.onap.policy.common.endpoints.event.comm.Topic.CommInfrastructure;
+import org.onap.policy.common.endpoints.listeners.ScoListener;
+import org.onap.policy.common.utils.coder.StandardCoderObject;
+import org.onap.policy.models.pdp.concepts.PdpStateChange;
+import org.onap.policy.models.sim.pdp.handler.PdpStateChangeMessageHandler;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Listener for Pdp state change messages sent by PAP.
+ *
+ * @author Ajith Sreekumar (ajith.sreekumar@est.tech)
+ */
+public class PdpStateChangeListener extends ScoListener<PdpStateChange> {
+    private static final Logger LOGGER = LoggerFactory.getLogger(PdpStateChangeListener.class);
+
+    /**
+     * Constructs the object.
+     */
+    public PdpStateChangeListener() {
+        super(PdpStateChange.class);
+    }
+
+    @Override
+    public void onTopicEvent(final CommInfrastructure infra, final String topic, final StandardCoderObject sco,
+            final PdpStateChange pdpStateChangeMsg) {
+        LOGGER.debug("Pdp state change message received from PAP. - {}", pdpStateChangeMsg);
+        new PdpStateChangeMessageHandler().handlePdpStateChangeEvent(pdpStateChangeMsg);
+    }
+}
diff --git a/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/comm/PdpStatusPublisher.java b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/comm/PdpStatusPublisher.java
new file mode 100644
index 000000000..33c9df778
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/comm/PdpStatusPublisher.java
@@ -0,0 +1,93 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  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.models.sim.pdp.comm;
+
+import java.util.List;
+import java.util.Timer;
+import java.util.TimerTask;
+
+import org.onap.policy.common.endpoints.event.comm.TopicSink;
+import org.onap.policy.common.endpoints.event.comm.client.TopicSinkClient;
+import org.onap.policy.models.pdp.concepts.PdpStatus;
+import org.onap.policy.models.sim.pdp.handler.PdpMessageHandler;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * This class is used to send pdp status messages to pap using TopicSinkClient.
+ *
+ * @author Ajith Sreekumar (ajith.sreekumar@est.tech)
+ */
+public class PdpStatusPublisher extends TimerTask {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(PdpStatusPublisher.class);
+
+    private TopicSinkClient topicSinkClient;
+    private Timer timer;
+    private long interval;
+
+    /**
+     * Constructor for instantiating PdpStatusPublisher.
+     *
+     * @param topicSinks the topic sinks
+     * @param interval time interval to send pdp status
+     */
+    public PdpStatusPublisher(final List<TopicSink> topicSinks, final long interval) {
+        this.topicSinkClient = new TopicSinkClient(topicSinks.get(0));
+        this.interval = interval;
+        timer = new Timer(false);
+        timer.scheduleAtFixedRate(this, 0, interval);
+    }
+
+    @Override
+    public void run() {
+        final PdpStatus pdpStatus = new PdpMessageHandler().createPdpStatusFromContext();
+        topicSinkClient.send(pdpStatus);
+        LOGGER.debug("Sent heartbeat to PAP - {}", pdpStatus);
+    }
+
+    /**
+     * Terminates the current timer.
+     */
+    public void terminate() {
+        timer.cancel();
+        timer.purge();
+    }
+
+    /**
+     * Get the current time interval used by the timer task.
+     *
+     * @return interval the current time interval
+     */
+    public long getInterval() {
+        return interval;
+    }
+
+    /**
+     * Method to send pdp status message to pap on demand.
+     *
+     * @param pdpStatus the pdp status
+     */
+    public void send(final PdpStatus pdpStatus) {
+        topicSinkClient.send(pdpStatus);
+        LOGGER.debug("Sent pdp status message to PAP - {}", pdpStatus);
+    }
+}
diff --git a/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/comm/PdpUpdateListener.java b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/comm/PdpUpdateListener.java
new file mode 100644
index 000000000..52b1b11f0
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/comm/PdpUpdateListener.java
@@ -0,0 +1,54 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  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.models.sim.pdp.comm;
+
+import org.onap.policy.common.endpoints.event.comm.Topic.CommInfrastructure;
+import org.onap.policy.common.endpoints.listeners.ScoListener;
+import org.onap.policy.common.utils.coder.StandardCoderObject;
+import org.onap.policy.models.pdp.concepts.PdpUpdate;
+import org.onap.policy.models.sim.pdp.handler.PdpUpdateMessageHandler;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Listener for Pdp update messages sent by PAP.
+ *
+ * @author Ajith Sreekumar (ajith.sreekumar@est.tech)
+ */
+public class PdpUpdateListener extends ScoListener<PdpUpdate> {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(PdpUpdateListener.class);
+
+    /**
+     * Constructs the object.
+     */
+    public PdpUpdateListener() {
+        super(PdpUpdate.class);
+    }
+
+    @Override
+    public void onTopicEvent(final CommInfrastructure infra, final String topic, final StandardCoderObject sco,
+            final PdpUpdate pdpUpdateMsg) {
+        LOGGER.debug("Pdp update message received from PAP - {}", pdpUpdateMsg);
+        new PdpUpdateMessageHandler().handlePdpUpdateEvent(pdpUpdateMsg);
+
+    }
+}
diff --git a/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/exception/PdpSimulatorException.java b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/exception/PdpSimulatorException.java
new file mode 100644
index 000000000..9d460ad77
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/exception/PdpSimulatorException.java
@@ -0,0 +1,59 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  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.models.sim.pdp.exception;
+
+/**
+ * This exception will be called if an error occurs in pdp simulator.
+ *
+ * @author Ajith Sreekumar (ajith.sreekumar@est.tech)
+ */
+public class PdpSimulatorException extends Exception {
+    private static final long serialVersionUID = -510646141043975917L;
+
+    /**
+     * Instantiates a new pdp simulator exception with a message.
+     *
+     * @param message the message
+     */
+    public PdpSimulatorException(final String message) {
+        super(message);
+    }
+
+    /**
+     * Instantiates a new pdp simulator exception caused by an exception.
+     *
+     * @param exception the exception that caused this exception to be thrown
+     */
+    public PdpSimulatorException(final Exception exception) {
+        super(exception);
+    }
+
+    /**
+     * Instantiates a new pdp simulator exception with a message and a caused by an exception.
+     *
+     * @param message the message
+     * @param exception the exception that caused this exception to be thrown
+     */
+    public PdpSimulatorException(final String message, final Exception exception) {
+        super(message, exception);
+    }
+
+}
diff --git a/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/exception/PdpSimulatorRunTimeException.java b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/exception/PdpSimulatorRunTimeException.java
new file mode 100644
index 000000000..4b6839f56
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/exception/PdpSimulatorRunTimeException.java
@@ -0,0 +1,58 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  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.models.sim.pdp.exception;
+
+/**
+ * This runtime exception will be called if a runtime error occurs when using pdp simulator.
+ *
+ * @author Ajith Sreekumar (ajith.sreekumar@est.tech)
+ */
+public class PdpSimulatorRunTimeException extends RuntimeException {
+    private static final long serialVersionUID = -6024353312002272098L;
+
+    /**
+     * Instantiates a new pdp simulator runtime exception with a message.
+     *
+     * @param message the message
+     */
+    public PdpSimulatorRunTimeException(final String message) {
+        super(message);
+    }
+
+    /**
+     * Instantiates a new pdp simulator runtime exception caused by an exception.
+     *
+     * @param exception the exception that caused this exception to be thrown
+     */
+    public PdpSimulatorRunTimeException(final Exception exception) {
+        super(exception);
+    }
+
+    /**
+     * Instantiates a new pdp simulator runtime exception with a message and caused by an exception.
+     *
+     * @param message the message
+     * @param exception the exception that caused this exception to be thrown
+     */
+    public PdpSimulatorRunTimeException(final String message, final Exception exception) {
+        super(message, exception);
+    }
+}
diff --git a/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/handler/PdpMessageHandler.java b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/handler/PdpMessageHandler.java
new file mode 100644
index 000000000..d4296c6df
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/handler/PdpMessageHandler.java
@@ -0,0 +1,151 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  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.models.sim.pdp.handler;
+
+import java.util.ArrayList;
+import java.util.List;
+
+
+import org.onap.policy.common.utils.services.Registry;
+import org.onap.policy.models.pdp.concepts.PdpResponseDetails;
+import org.onap.policy.models.pdp.concepts.PdpStatus;
+import org.onap.policy.models.pdp.enums.PdpHealthStatus;
+import org.onap.policy.models.pdp.enums.PdpResponseStatus;
+import org.onap.policy.models.pdp.enums.PdpState;
+import org.onap.policy.models.sim.pdp.PdpSimulatorConstants;
+import org.onap.policy.models.sim.pdp.parameters.PdpStatusParameters;
+import org.onap.policy.models.sim.pdp.parameters.ToscaPolicyTypeIdentifierParameters;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicyIdentifier;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicyTypeIdentifier;
+
+/**
+ * This class supports the handling of pdp messages.
+ *
+ * @author Ajith Sreekumar (ajith.sreekumar@est.tech)
+ */
+public class PdpMessageHandler {
+
+    /**
+     * Method to create PdpStatus message from the parameters which will be saved to the context.
+     *
+     * @param instanceId instance id of the pdp
+     * @param pdpStatusParameters pdp status parameters read from the configuration file
+     *
+     * @return pdpStatus the pdp status message
+     */
+    public PdpStatus createPdpStatusFromParameters(final String instanceId,
+            final PdpStatusParameters pdpStatusParameters) {
+        final PdpStatus pdpStatus = new PdpStatus();
+        pdpStatus.setPdpType(pdpStatusParameters.getPdpType());
+        pdpStatus.setState(PdpState.PASSIVE);
+        pdpStatus.setHealthy(PdpHealthStatus.HEALTHY);
+        pdpStatus.setDescription(pdpStatusParameters.getDescription());
+        pdpStatus.setName(instanceId);
+        pdpStatus.setSupportedPolicyTypes(getSupportedPolicyTypesFromParameters(pdpStatusParameters));
+        return pdpStatus;
+    }
+
+    /**
+     * Method to get supported policy types from the parameters.
+     *
+     * @param pdpStatusParameters pdp status parameters
+     * @return supportedPolicyTypes list of PolicyTypeIdent
+     */
+    private List<ToscaPolicyTypeIdentifier> getSupportedPolicyTypesFromParameters(
+            final PdpStatusParameters pdpStatusParameters) {
+        final List<ToscaPolicyTypeIdentifier> supportedPolicyTypes =
+                new ArrayList<>(pdpStatusParameters.getSupportedPolicyTypes().size());
+        for (final ToscaPolicyTypeIdentifierParameters policyTypeIdentParameters : pdpStatusParameters
+                .getSupportedPolicyTypes()) {
+            supportedPolicyTypes.add(new ToscaPolicyTypeIdentifier(policyTypeIdentParameters.getName(),
+                    policyTypeIdentParameters.getVersion()));
+        }
+        return supportedPolicyTypes;
+    }
+
+    /**
+     * Method to create PdpStatus message from the context, which is to be sent by pdp simulator to pap.
+     *
+     * @return PdpStatus the pdp status message
+     */
+    public PdpStatus createPdpStatusFromContext() {
+        final PdpStatus pdpStatusContext = Registry.get(PdpSimulatorConstants.REG_PDP_STATUS_OBJECT, PdpStatus.class);
+        final PdpStatus pdpStatus = new PdpStatus();
+        pdpStatus.setName(pdpStatusContext.getName());
+        pdpStatus.setPdpType(pdpStatusContext.getPdpType());
+        pdpStatus.setState(pdpStatusContext.getState());
+        pdpStatus.setHealthy(pdpStatusContext.getHealthy());
+        pdpStatus.setDescription(pdpStatusContext.getDescription());
+        pdpStatus.setSupportedPolicyTypes(pdpStatusContext.getSupportedPolicyTypes());
+        pdpStatus.setPolicies(pdpStatusContext.getPolicies());
+        pdpStatus.setPdpGroup(pdpStatusContext.getPdpGroup());
+        pdpStatus.setPdpSubgroup(pdpStatusContext.getPdpSubgroup());
+        return pdpStatus;
+    }
+
+    /**
+     * Method to get a final pdp status when the simulator is shut down.
+     *
+     * @return PdpStatus the pdp status message
+     */
+    public PdpStatus getTerminatedPdpStatus() {
+        final PdpStatus pdpStatusInContext = Registry.get(PdpSimulatorConstants.REG_PDP_STATUS_OBJECT, PdpStatus.class);
+        pdpStatusInContext.setState(PdpState.TERMINATED);
+        pdpStatusInContext.setDescription("Pdp Simulator shutting down.");
+        return createPdpStatusFromContext();
+    }
+
+    /**
+     * Method create PdpResponseDetails which will be sent as part of pdp status to PAP.
+     *
+     * @param requestId request id of the PdpUpdate message from pap
+     * @param status response status to be sent back
+     * @param responseMessage response message to be sent back
+     *
+     * @return PdpResponseDetails
+     */
+    public PdpResponseDetails createPdpResonseDetails(final String requestId, final PdpResponseStatus status,
+            final String responseMessage) {
+        final PdpResponseDetails pdpResponseDetails = new PdpResponseDetails();
+        pdpResponseDetails.setResponseTo(requestId);
+        pdpResponseDetails.setResponseStatus(status);
+        pdpResponseDetails.setResponseMessage(responseMessage);
+        return pdpResponseDetails;
+    }
+
+    /**
+     * Method to retrieve list of ToscaPolicyIdentifier from the list of ToscaPolicy.
+     *
+     * @param policies list of ToscaPolicy
+     *
+     * @return policyTypeIdentifiers
+     */
+    public List<ToscaPolicyIdentifier> getToscaPolicyIdentifiers(final List<ToscaPolicy> policies) {
+        final List<ToscaPolicyIdentifier> policyIdentifiers = new ArrayList<>(policies.size());
+        for (final ToscaPolicy policy : policies) {
+            if (null != policy.getName() && null != policy.getVersion()) {
+                policyIdentifiers.add(new ToscaPolicyIdentifier(policy.getName(), policy.getVersion()));
+            }
+        }
+        return policyIdentifiers;
+    }
+}
diff --git a/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/handler/PdpStateChangeMessageHandler.java b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/handler/PdpStateChangeMessageHandler.java
new file mode 100644
index 000000000..ec1fa25a3
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/handler/PdpStateChangeMessageHandler.java
@@ -0,0 +1,125 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  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.models.sim.pdp.handler;
+
+import java.util.List;
+
+import org.onap.policy.common.utils.services.Registry;
+import org.onap.policy.models.pdp.concepts.PdpResponseDetails;
+import org.onap.policy.models.pdp.concepts.PdpStateChange;
+import org.onap.policy.models.pdp.concepts.PdpStatus;
+import org.onap.policy.models.pdp.enums.PdpResponseStatus;
+import org.onap.policy.models.pdp.enums.PdpState;
+import org.onap.policy.models.sim.pdp.PdpSimulatorConstants;
+import org.onap.policy.models.sim.pdp.comm.PdpStatusPublisher;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * This class supports the handling of pdp state change messages.
+ *
+ * @author Ajith Sreekumar (ajith.sreekumar@est.tech)
+ */
+public class PdpStateChangeMessageHandler {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(PdpStateChangeMessageHandler.class);
+
+    /**
+     * Method which handles a pdp state change event from PAP.
+     *
+     * @param pdpStateChangeMsg pdp state change message
+     */
+    public void handlePdpStateChangeEvent(final PdpStateChange pdpStateChangeMsg) {
+        final PdpStatus pdpStatusContext = Registry.get(PdpSimulatorConstants.REG_PDP_STATUS_OBJECT, PdpStatus.class);
+        final PdpStatusPublisher pdpStatusPublisher = Registry.get(PdpSimulatorConstants.REG_PDP_STATUS_PUBLISHER);
+        final PdpMessageHandler pdpMessageHandler = new PdpMessageHandler();
+        PdpResponseDetails pdpResponseDetails = null;
+        if (pdpStateChangeMsg.appliesTo(pdpStatusContext.getName(), pdpStatusContext.getPdpGroup(),
+                pdpStatusContext.getPdpSubgroup())) {
+            switch (pdpStateChangeMsg.getState()) {
+                case PASSIVE:
+                    pdpResponseDetails = handlePassiveState(pdpStateChangeMsg, pdpStatusContext, pdpMessageHandler);
+                    break;
+                case ACTIVE:
+                    pdpResponseDetails = handleActiveState(pdpStateChangeMsg, pdpStatusContext, pdpMessageHandler);
+                    break;
+                default:
+                    break;
+            }
+            final PdpStatus pdpStatus = pdpMessageHandler.createPdpStatusFromContext();
+            pdpStatus.setResponse(pdpResponseDetails);
+            pdpStatus.setDescription("Pdp status response message for PdpStateChange");
+            pdpStatusPublisher.send(pdpStatus);
+        }
+    }
+
+    /**
+     * Method to handle when the new state from pap is active.
+     *
+     * @param pdpStateChangeMsg pdp state change message
+     * @param pdpStatusContext pdp status object in memory
+     * @param pdpMessageHandler the pdp message handler
+     * @return pdpResponseDetails pdp response
+     */
+    private PdpResponseDetails handleActiveState(final PdpStateChange pdpStateChangeMsg,
+            final PdpStatus pdpStatusContext, final PdpMessageHandler pdpMessageHandler) {
+        PdpResponseDetails pdpResponseDetails = null;
+        if (pdpStatusContext.getState().equals(PdpState.ACTIVE)) {
+            pdpResponseDetails = pdpMessageHandler.createPdpResonseDetails(pdpStateChangeMsg.getRequestId(),
+                    PdpResponseStatus.SUCCESS, "Pdp already in active state");
+        } else {
+            final List<ToscaPolicy> policies = Registry.get(PdpSimulatorConstants.REG_PDP_TOSCA_POLICY_LIST);
+            if (policies.isEmpty()) {
+                pdpStatusContext.setState(PdpState.ACTIVE);
+                pdpResponseDetails = pdpMessageHandler.createPdpResonseDetails(pdpStateChangeMsg.getRequestId(),
+                        PdpResponseStatus.SUCCESS, "State changed to active. No policies found.");
+            } else {
+                pdpResponseDetails = pdpMessageHandler.createPdpResonseDetails(pdpStateChangeMsg.getRequestId(),
+                        PdpResponseStatus.SUCCESS, "Pdp started. State changed to active.");
+                pdpStatusContext.setState(PdpState.ACTIVE);
+            }
+        }
+        return pdpResponseDetails;
+    }
+
+    /**
+     * Method to handle when the new state from pap is passive.
+     *
+     * @param pdpStateChangeMsg pdp state change message
+     * @param pdpStatusContext pdp status object in memory
+     * @param pdpMessageHandler the pdp message handler
+     * @return pdpResponseDetails pdp response
+     */
+    private PdpResponseDetails handlePassiveState(final PdpStateChange pdpStateChangeMsg,
+            final PdpStatus pdpStatusContext, final PdpMessageHandler pdpMessageHandler) {
+        PdpResponseDetails pdpResponseDetails = null;
+        if (pdpStatusContext.getState().equals(PdpState.PASSIVE)) {
+            pdpResponseDetails = pdpMessageHandler.createPdpResonseDetails(pdpStateChangeMsg.getRequestId(),
+                    PdpResponseStatus.SUCCESS, "Pdp already in passive state");
+        } else {
+            pdpResponseDetails = pdpMessageHandler.createPdpResonseDetails(pdpStateChangeMsg.getRequestId(),
+                    PdpResponseStatus.SUCCESS, "Pdp state changed from Active to Passive.");
+            pdpStatusContext.setState(PdpState.PASSIVE);
+        }
+        return pdpResponseDetails;
+    }
+}
diff --git a/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/handler/PdpUpdateMessageHandler.java b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/handler/PdpUpdateMessageHandler.java
new file mode 100644
index 000000000..94499f43d
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/handler/PdpUpdateMessageHandler.java
@@ -0,0 +1,121 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  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.models.sim.pdp.handler;
+
+import java.util.List;
+
+
+import org.onap.policy.common.endpoints.event.comm.TopicSink;
+import org.onap.policy.common.utils.services.Registry;
+import org.onap.policy.models.pdp.concepts.PdpResponseDetails;
+import org.onap.policy.models.pdp.concepts.PdpStatus;
+import org.onap.policy.models.pdp.concepts.PdpUpdate;
+import org.onap.policy.models.pdp.enums.PdpResponseStatus;
+import org.onap.policy.models.pdp.enums.PdpState;
+import org.onap.policy.models.sim.pdp.PdpSimulatorConstants;
+import org.onap.policy.models.sim.pdp.comm.PdpStatusPublisher;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * This class supports the handling of pdp update messages.
+ *
+ * @author Ajith Sreekumar (ajith.sreekumar@est.tech)
+ */
+public class PdpUpdateMessageHandler {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(PdpUpdateMessageHandler.class);
+
+    /**
+     * Method which handles a pdp update event from PAP.
+     *
+     * @param pdpUpdateMsg pdp update message
+     */
+    public void handlePdpUpdateEvent(final PdpUpdate pdpUpdateMsg) {
+        final PdpMessageHandler pdpMessageHandler = new PdpMessageHandler();
+        final PdpStatus pdpStatusContext = Registry.get(PdpSimulatorConstants.REG_PDP_STATUS_OBJECT, PdpStatus.class);
+        PdpResponseDetails pdpResponseDetails = null;
+        if (pdpUpdateMsg.appliesTo(pdpStatusContext.getName(), pdpStatusContext.getPdpGroup(),
+                pdpStatusContext.getPdpSubgroup())) {
+            final PdpStatusPublisher pdpStatusPublisher = Registry.get(PdpSimulatorConstants.REG_PDP_STATUS_PUBLISHER);
+            if (checkIfAlreadyHandled(pdpUpdateMsg, pdpStatusContext)) {
+                pdpResponseDetails = pdpMessageHandler.createPdpResonseDetails(pdpUpdateMsg.getRequestId(),
+                        PdpResponseStatus.SUCCESS, "Pdp already updated");
+            } else {
+                if (null != pdpUpdateMsg.getPdpHeartbeatIntervalMs() && pdpUpdateMsg.getPdpHeartbeatIntervalMs() > 0
+                        && pdpStatusPublisher.getInterval() != pdpUpdateMsg.getPdpHeartbeatIntervalMs()) {
+                    updateInterval(pdpUpdateMsg.getPdpHeartbeatIntervalMs());
+                }
+                pdpStatusContext.setPdpGroup(pdpUpdateMsg.getPdpGroup());
+                pdpStatusContext.setPdpSubgroup(pdpUpdateMsg.getPdpSubgroup());
+                pdpStatusContext
+                        .setPolicies(new PdpMessageHandler().getToscaPolicyIdentifiers(pdpUpdateMsg.getPolicies()));
+                if (pdpStatusContext.getState().equals(PdpState.ACTIVE)) {
+                    if (!pdpUpdateMsg.getPolicies().isEmpty()) {
+                        pdpResponseDetails = pdpMessageHandler.createPdpResonseDetails(pdpUpdateMsg.getRequestId(),
+                                PdpResponseStatus.SUCCESS, "Pdp engine started and policies are running.");
+                    }
+                }
+                Registry.registerOrReplace(PdpSimulatorConstants.REG_PDP_TOSCA_POLICY_LIST, pdpUpdateMsg.getPolicies());
+                if (null == pdpResponseDetails) {
+                    pdpResponseDetails = pdpMessageHandler.createPdpResonseDetails(pdpUpdateMsg.getRequestId(),
+                            PdpResponseStatus.SUCCESS, "Pdp update successful.");
+                }
+            }
+            final PdpStatusPublisher pdpStatusPublisherTemp =
+                    Registry.get(PdpSimulatorConstants.REG_PDP_STATUS_PUBLISHER);
+            final PdpStatus pdpStatus = pdpMessageHandler.createPdpStatusFromContext();
+            pdpStatus.setResponse(pdpResponseDetails);
+            pdpStatus.setDescription("Pdp status response message for PdpUpdate");
+            pdpStatusPublisherTemp.send(pdpStatus);
+        }
+    }
+
+
+    /**
+     * Method checks if the Pdp update message is already handled by checking the values in the context.
+     *
+     * @param pdpUpdateMsg pdp update message received from pap
+     * @param pdpStatusContext values saved in context memory
+     * @return boolean flag which tells if the information is same or not
+     */
+    private boolean checkIfAlreadyHandled(final PdpUpdate pdpUpdateMsg, final PdpStatus pdpStatusContext) {
+        return null != pdpStatusContext.getPdpGroup()
+                && pdpStatusContext.getPdpGroup().equals(pdpUpdateMsg.getPdpGroup())
+                && null != pdpStatusContext.getPdpSubgroup()
+                && pdpStatusContext.getPdpSubgroup().equals(pdpUpdateMsg.getPdpSubgroup())
+                && null != pdpStatusContext.getPolicies() && new PdpMessageHandler()
+                        .getToscaPolicyIdentifiers(pdpUpdateMsg.getPolicies()).equals(pdpStatusContext.getPolicies());
+    }
+
+    /**
+     * Method to update the time interval used by the timer task.
+     *
+     * @param interval time interval received in the pdp update message from pap
+     */
+    public void updateInterval(final long interval) {
+        final PdpStatusPublisher pdpStatusPublisher = Registry.get(PdpSimulatorConstants.REG_PDP_STATUS_PUBLISHER);
+        pdpStatusPublisher.terminate();
+        final List<TopicSink> topicSinks = Registry.get(PdpSimulatorConstants.REG_PDP_TOPIC_SINKS);
+        Registry.registerOrReplace(PdpSimulatorConstants.REG_PDP_STATUS_PUBLISHER,
+                new PdpStatusPublisher(topicSinks, interval));
+    }
+}
diff --git a/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/parameters/PdpSimulatorParameterGroup.java b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/parameters/PdpSimulatorParameterGroup.java
new file mode 100644
index 000000000..58c583901
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/parameters/PdpSimulatorParameterGroup.java
@@ -0,0 +1,48 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  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.models.sim.pdp.parameters;
+
+import lombok.Getter;
+
+import org.onap.policy.common.parameters.ParameterGroupImpl;
+import org.onap.policy.common.parameters.annotations.NotBlank;
+import org.onap.policy.common.parameters.annotations.NotNull;
+
+/**
+ * Class to hold all parameters needed for pdp simulator component.
+ *
+ * @author Ajith Sreekumar (ajith.sreekumar@est.tech)
+ */
+@NotNull
+@NotBlank
+@Getter
+public class PdpSimulatorParameterGroup extends ParameterGroupImpl {
+    private PdpStatusParameters pdpStatusParameters;
+
+    /**
+     * Create the pdp simulator parameter group.
+     *
+     * @param name the parameter group name
+     */
+    public PdpSimulatorParameterGroup(final String name) {
+        super(name);
+    }
+}
diff --git a/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/parameters/PdpSimulatorParameterHandler.java b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/parameters/PdpSimulatorParameterHandler.java
new file mode 100644
index 000000000..2c5ccebf9
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/parameters/PdpSimulatorParameterHandler.java
@@ -0,0 +1,89 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  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.models.sim.pdp.parameters;
+
+import java.io.File;
+
+
+import org.onap.policy.common.parameters.GroupValidationResult;
+import org.onap.policy.common.utils.coder.Coder;
+import org.onap.policy.common.utils.coder.CoderException;
+import org.onap.policy.common.utils.coder.StandardCoder;
+import org.onap.policy.models.sim.pdp.PdpSimulatorCommandLineArguments;
+import org.onap.policy.models.sim.pdp.exception.PdpSimulatorException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * This class handles reading, parsing and validating of pdp simulator parameters from JSON files.
+ *
+ * @author Ajith Sreekumar (ajith.sreekumar@est.tech)
+ */
+public class PdpSimulatorParameterHandler {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(PdpSimulatorParameterHandler.class);
+    private static final Coder CODER = new StandardCoder();
+
+    /**
+     * Read the parameters from the parameter file.
+     *
+     * @param arguments the arguments passed to pdp simulator
+     * @return the parameters read from the configuration file
+     * @throws PdpSimulatorException on parameter exceptions
+     */
+    public PdpSimulatorParameterGroup getParameters(final PdpSimulatorCommandLineArguments arguments)
+            throws PdpSimulatorException {
+        PdpSimulatorParameterGroup pdpSimulatorParameterGroup = null;
+
+        // Read the parameters
+        try {
+            // Read the parameters from JSON
+            final File file = new File(arguments.getFullConfigurationFilePath());
+            pdpSimulatorParameterGroup = CODER.decode(file, PdpSimulatorParameterGroup.class);
+        } catch (final CoderException e) {
+            final String errorMessage = "error reading parameters from \"" + arguments.getConfigurationFilePath()
+                    + "\"\n" + "(" + e.getClass().getSimpleName() + "):" + e.getMessage();
+            LOGGER.error(errorMessage, e);
+            throw new PdpSimulatorException(errorMessage, e);
+        }
+
+        // The JSON processing returns null if there is an empty file
+        if (pdpSimulatorParameterGroup == null) {
+            final String errorMessage = "no parameters found in \"" + arguments.getConfigurationFilePath() + "\"";
+            LOGGER.error(errorMessage);
+            throw new PdpSimulatorException(errorMessage);
+        }
+
+        // validate the parameters
+        final GroupValidationResult validationResult = pdpSimulatorParameterGroup.validate();
+        if (!validationResult.isValid()) {
+            String returnMessage =
+                    "validation error(s) on parameters from \"" + arguments.getConfigurationFilePath() + "\"\n";
+            returnMessage += validationResult.getResult();
+
+            LOGGER.error(returnMessage);
+            throw new PdpSimulatorException(returnMessage);
+        }
+
+        return pdpSimulatorParameterGroup;
+    }
+
+}
diff --git a/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/parameters/PdpStatusParameters.java b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/parameters/PdpStatusParameters.java
new file mode 100644
index 000000000..e59ec52b7
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/parameters/PdpStatusParameters.java
@@ -0,0 +1,52 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  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.models.sim.pdp.parameters;
+
+import java.util.List;
+
+import lombok.Getter;
+
+import org.onap.policy.common.parameters.ParameterGroupImpl;
+import org.onap.policy.common.parameters.annotations.Min;
+import org.onap.policy.common.parameters.annotations.NotBlank;
+import org.onap.policy.common.parameters.annotations.NotNull;
+
+/**
+ * Class to hold all parameters needed for pdpstatus.
+ *
+ * @author Ajith Sreekumar (ajith.sreekumar@est.tech)
+ */
+@NotNull
+@NotBlank
+@Getter
+public class PdpStatusParameters extends ParameterGroupImpl {
+
+    @Min(value = 1)
+    private long timeIntervalMs;
+
+    private String pdpType;
+    private String description;
+    private List<ToscaPolicyTypeIdentifierParameters> supportedPolicyTypes;
+
+    public PdpStatusParameters() {
+        super(PdpStatusParameters.class.getSimpleName());
+    }
+}
diff --git a/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/parameters/ToscaPolicyTypeIdentifierParameters.java b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/parameters/ToscaPolicyTypeIdentifierParameters.java
new file mode 100644
index 000000000..622b41122
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/java/org/onap/policy/models/sim/pdp/parameters/ToscaPolicyTypeIdentifierParameters.java
@@ -0,0 +1,43 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  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.models.sim.pdp.parameters;
+
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+import lombok.Setter;
+
+import org.onap.policy.common.parameters.annotations.NotBlank;
+import org.onap.policy.common.parameters.annotations.NotNull;
+
+/**
+ * Class to hold all parameters needed for PolicyTypeIdent.
+ *
+ * @author Ajith Sreekumar (ajith.sreekumar@est.tech)
+ */
+@NotNull
+@NotBlank
+@Getter
+@Setter
+@EqualsAndHashCode
+public class ToscaPolicyTypeIdentifierParameters {
+    private String name;
+    private String version;
+}
diff --git a/models-sim/policy-models-sim-pdp/src/main/package/docker/Dockerfile b/models-sim/policy-models-sim-pdp/src/main/package/docker/Dockerfile
new file mode 100644
index 000000000..93a3c9b63
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/package/docker/Dockerfile
@@ -0,0 +1,73 @@
+#
+# ============LICENSE_START=======================================================
+#  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=========================================================
+#
+
+#
+# Docker file to build an image that runs the PDP simulator on Java 8 in alpine
+#
+
+FROM onap/policy-common-alpine:1.4.0
+
+LABEL maintainer="Policy Team"
+
+ARG POLICY_LOGS=/var/log/onap/policy/pdp-sim
+
+ENV POLICY_HOME=/opt/app/policy
+ENV POLICY_LOGS=${POLICY_LOGS}
+
+RUN apk add --no-cache --update \
+    bash \
+    nss \
+    procps \
+    coreutils \
+    findutils \
+    grep \
+    zip \
+    unzip \
+    curl \
+    wget \
+    openssh \
+    iproute2 \
+    iputils \
+    vim \
+    openjdk8
+
+# Create PDP simulator user and group
+# Add simulator-specific directories and set ownership as the simulator user
+RUN mkdir -p ${POLICY_HOME}/pdp-sim \
+    && mkdir -p ${POLICY_HOME}/pdp-sim/bin \
+    && mkdir -p ${POLICY_LOGS} \
+    && chown -R policy:policy ${POLICY_LOGS} \
+    && mkdir /packages
+
+# Unpack the tarball
+COPY policy-models-sim-pdp-tarball.tar.gz /packages
+RUN tar xvfz /packages/policy-models-sim-pdp-tarball.tar.gz --directory ${POLICY_HOME}/pdp-sim \
+    && rm /packages/policy-models-sim-pdp-tarball.tar.gz
+
+# Ensure everything has the correct permissions
+# Copy examples to PDP simulator user area
+COPY pdp-sim.sh ${POLICY_HOME}/pdp-sim/bin
+RUN find /opt/app -type d -perm 755 \
+    && find /opt/app -type f -perm 644 \
+    && chmod a+x ${POLICY_HOME}/pdp-sim/bin/*
+
+USER policy
+ENV PATH ${POLICY_HOME}/pdp-sim/bin:$PATH
+ENTRYPOINT [ "bash", "pdp-sim.sh" ]
diff --git a/models-sim/policy-models-sim-pdp/src/main/package/docker/docker_build.sh b/models-sim/policy-models-sim-pdp/src/main/package/docker/docker_build.sh
new file mode 100644
index 000000000..eca68cb17
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/package/docker/docker_build.sh
@@ -0,0 +1,65 @@
+#!/bin/bash
+#
+# ============LICENSE_START=======================================================
+#  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=========================================================
+#
+#
+# Script to build a Docker file for the PDP simulator. The docker image
+# generated by this script should NOT be placed in the ONAP nexus, it is
+# only for testing purposes.
+#
+
+if [ -z "$PDP_SIM_HOME" ]
+then
+	PDP_SIM_HOME=`pwd`
+fi
+
+# Check for the dockerfile
+if [ ! -f "$PDP_SIM_HOME/src/main/package/docker/Dockerfile" ]
+then
+	echo docker file "$PDP_SIM_HOME/src/main/package/docker/Dockerfile" not found
+	exit 1
+fi
+
+# Check for the start script
+if [ ! -f "$PDP_SIM_HOME/src/main/package/docker/pdp-sim.sh" ]
+then
+	echo start script "$PDP_SIM_HOME/src/main/package/docker/pdp-sim.sh" not found
+	exit 1
+fi
+
+# Check for the tarball
+tarball_count=`ls $PDP_SIM_HOME/target/policy-models-sim-pdp-*-SNAPSHOT-tarball.tar.gz 2> /dev/null | wc | awk '{print $1}'`
+if [ "$tarball_count" -ne "1" ]
+then
+	echo one and only one tarball should exist in the target directory
+	exit 2
+fi
+
+# Set up the docker build
+rm -fr $PDP_SIM_HOME/target/docker
+mkdir $PDP_SIM_HOME/target/docker
+cp $PDP_SIM_HOME/src/main/package/docker/Dockerfile $PDP_SIM_HOME/target/docker
+cp $PDP_SIM_HOME/src/main/package/docker/pdp-sim.sh $PDP_SIM_HOME/target/docker
+cp $PDP_SIM_HOME/target/policy-models-sim-pdp-*-SNAPSHOT-tarball.tar.gz $PDP_SIM_HOME/target/docker/policy-models-sim-pdp-tarball.tar.gz
+
+# Run the docker build
+cd $PDP_SIM_HOME/target
+docker build -t pdp/simulator docker
+
+
diff --git a/models-sim/policy-models-sim-pdp/src/main/package/docker/pdp-sim.sh b/models-sim/policy-models-sim-pdp/src/main/package/docker/pdp-sim.sh
new file mode 100644
index 000000000..b0e3ba0e5
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/package/docker/pdp-sim.sh
@@ -0,0 +1,62 @@
+#!/bin/bash
+#
+# ============LICENSE_START=======================================================
+#  Copyright (C) 2019 Nordix Foundation.
+# ================================================================================
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+# ============LICENSE_END=========================================================
+#
+
+if [ -z "$PDP_SIM_HOME" ]
+then
+	PDP_SIM_HOME=/opt/app/policy/pdp-sim
+fi
+
+JAVA_HOME=/usr/lib/jvm/java-1.8-openjdk
+KEYSTORE="${PDP_SIM_HOME}/etc/ssl/policy-keystore"
+KEYSTORE_PASSWD="Pol1cy_0nap"
+TRUSTSTORE="${PDP_SIM_HOME}/etc/ssl/policy-truststore"
+TRUSTSTORE_PASSWD="Pol1cy_0nap"
+
+if [ "$#" -eq 2 ]
+then
+    CONFIG_FILE=$1
+    PROPERTIES_FILE=$2
+else
+    CONFIG_FILE=${CONFIG_FILE}
+    PROPERTIES_FILE=${PROPERTIES_FILE}
+fi
+
+if [ -z "$CONFIG_FILE" ]
+then
+    CONFIG_FILE="$PDP_SIM_HOME/etc/config/OnapPfConfig.json"
+fi
+
+if [ -z "$PROPERTIES_FILE" ]
+then
+    PROPERTIES_FILE="$PDP_SIM_HOME/etc/config/topic.properties"
+fi
+
+echo "PDP simulatior configuration file: $CONFIG_FILE and properties file: $PROPERTIES_FILE"
+
+$JAVA_HOME/bin/java \
+    -cp "$PDP_SIM_HOME/etc:$PDP_SIM_HOME/lib/*" \
+    -Djavax.net.ssl.keyStore="$KEYSTORE" \
+    -Djavax.net.ssl.keyStorePassword="$KEYSTORE_PASSWD" \
+    -Djavax.net.ssl.trustStore="$TRUSTSTORE" \
+    -Djavax.net.ssl.trustStorePassword="$TRUSTSTORE_PASSWD" \
+    -Dlogback.configurationFile=$PDP_SIM_HOME/etc/logback.xml \
+    org.onap.policy.models.sim.pdp.PdpSimulatorMain \
+    -c $CONFIG_FILE -p $PROPERTIES_FILE
diff --git a/models-sim/policy-models-sim-pdp/src/main/package/tarball/assembly.xml b/models-sim/policy-models-sim-pdp/src/main/package/tarball/assembly.xml
new file mode 100644
index 000000000..25ffc65a9
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/package/tarball/assembly.xml
@@ -0,0 +1,68 @@
+<!--
+  ============LICENSE_START=======================================================
+   Copyright (C) 2019 Nordix Foundation.
+  ================================================================================
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+  SPDX-License-Identifier: Apache-2.0
+  ============LICENSE_END=========================================================
+-->
+
+<assembly>
+    <id>tarball</id>
+    <formats>
+        <format>tar.gz</format>
+    </formats>
+    <includeBaseDirectory>false</includeBaseDirectory>
+    <dependencySets>
+        <dependencySet>
+            <useProjectArtifact>true</useProjectArtifact>
+            <outputDirectory>/lib</outputDirectory>
+            <unpack>false</unpack>
+            <scope>runtime</scope>
+            <includes>
+                <include>*:jar</include>
+            </includes>
+        </dependencySet>
+    </dependencySets>
+    <fileSets>
+        <fileSet>
+            <directory>${project.basedir}/src/main/resources
+            </directory>
+            <includes>
+                <include>logback.xml</include>
+            </includes>
+            <outputDirectory>etc</outputDirectory>
+            <lineEnding>unix</lineEnding>
+        </fileSet>
+        <fileSet>
+            <directory>${project.basedir}/src/main/resources/config
+            </directory>
+            <includes>
+                <include>OnapPfConfig.json</include>
+                <include>topic.properties</include>
+            </includes>
+            <outputDirectory>etc/config</outputDirectory>
+            <lineEnding>unix</lineEnding>
+        </fileSet>
+        <fileSet>
+            <directory>${project.basedir}/src/main/resources/ssl
+            </directory>
+            <includes>
+                <include>policy*</include>
+            </includes>
+            <outputDirectory>etc/ssl</outputDirectory>
+            <lineEnding>keep</lineEnding>
+        </fileSet>
+    </fileSets>
+</assembly>
diff --git a/models-sim/policy-models-sim-pdp/src/main/resources/config/OnapPfConfig.json b/models-sim/policy-models-sim-pdp/src/main/resources/config/OnapPfConfig.json
new file mode 100644
index 000000000..ff7903c78
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/resources/config/OnapPfConfig.json
@@ -0,0 +1,9 @@
+{
+    "name":"OnapPfParameterGroup",
+    "pdpStatusParameters":{
+        "timeIntervalMs": 120000,
+        "pdpType":"apex",
+        "description":"Pdp Heartbeat",
+        "supportedPolicyTypes":[{"name":"onap.policies.controlloop.operational.Apex","version":"1.0.0"}]
+    }
+}
\ No newline at end of file
diff --git a/models-sim/policy-models-sim-pdp/src/main/resources/config/topic.properties b/models-sim/policy-models-sim-pdp/src/main/resources/config/topic.properties
new file mode 100644
index 000000000..0139bb38a
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/resources/config/topic.properties
@@ -0,0 +1,22 @@
+# ============LICENSE_START=======================================================
+# 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=========================================================
+
+dmaap.source.topics=POLICY-PDP-PAP
+dmaap.sink.topics=POLICY-PDP-PAP
+dmaap.source.topics.POLICY-PDP-PAP.servers= message-router:3904
+dmaap.sink.topics.POLICY-PDP-PAP.servers= message-router:3904
\ No newline at end of file
diff --git a/models-sim/policy-models-sim-pdp/src/main/resources/logback.xml b/models-sim/policy-models-sim-pdp/src/main/resources/logback.xml
new file mode 100644
index 000000000..2b650d84c
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/resources/logback.xml
@@ -0,0 +1,46 @@
+<!--
+  ============LICENSE_START=======================================================
+   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=========================================================
+-->
+
+<configuration scan="true" scanPeriod="30 seconds" debug="false">
+
+    <contextName>DMaaPSim</contextName>
+    <statusListener class="ch.qos.logback.core.status.OnConsoleStatusListener" />
+    <property name="LOG_DIR" value="${java.io.tmpdir}/pf_logging/" />
+
+    <!-- USE FOR STD OUT ONLY -->
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <Pattern>%d %contextName [%t] %level %logger{36} - %msg%n</Pattern>
+        </encoder>
+    </appender>
+
+    <root level="info">
+        <appender-ref ref="STDOUT" />
+    </root>
+
+    <logger name="org.eclipse.jetty" level="info" additivity="false">
+        <appender-ref ref="STDOUT" />
+    </logger>
+
+    <logger name="org.onap.policy.models.sim.pdp" level="debug" additivity="false">
+        <appender-ref ref="STDOUT" />
+    </logger>
+
+</configuration>
diff --git a/models-sim/policy-models-sim-pdp/src/main/resources/ssl/policy-keystore b/models-sim/policy-models-sim-pdp/src/main/resources/ssl/policy-keystore
new file mode 100644
index 000000000..7d2b1ecce
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/resources/ssl/policy-keystore
diff --git a/models-sim/policy-models-sim-pdp/src/main/resources/ssl/policy-truststore b/models-sim/policy-models-sim-pdp/src/main/resources/ssl/policy-truststore
new file mode 100644
index 000000000..8834ac257
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/resources/ssl/policy-truststore
diff --git a/models-sim/policy-models-sim-pdp/src/main/resources/version.txt b/models-sim/policy-models-sim-pdp/src/main/resources/version.txt
new file mode 100644
index 000000000..aec42fcca
--- /dev/null
+++ b/models-sim/policy-models-sim-pdp/src/main/resources/version.txt
@@ -0,0 +1,4 @@
+ONAP Policy-PDP simulator Service
+Version: ${project.version}
+Built (UTC): ${maven.build.timestamp}
+ONAP https://wiki.onap.org
\ No newline at end of file