Participant simulator parameters and junits

This commit brings in main, activator, command line paramater handling
for main, rest and database parameter handling for Participant Simulator.
A draft SimulationHandler is included which handles simulation of participants
and control loop elements, respective provider and participant
intermediary handling will be shared in later commits.

Issue-ID: POLICY-2987
Change-Id: Iffbfca6907bf4199347e6349a22008ac4d491a1c
Signed-off-by: Sirisha_Manchikanti <sirisha.manchikanti@est.tech>

26 files changed, 2225 insertions, 0 deletions

diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/parameters/ParticipantSimulatorParameterHandler.java b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/parameters/ParticipantSimulatorParameterHandler.java
new file mode 100644
index 000000000..7bd2851df
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/parameters/ParticipantSimulatorParameterHandler.java
@@ -0,0 +1,78 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 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.clamp.controlloop.participant.simulator.main.parameters;
+
+import java.io.File;
+import javax.ws.rs.core.Response;
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopException;
+import org.onap.policy.clamp.controlloop.participant.simulator.main.startstop.ParticipantSimulatorCommandLineArguments;
+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;
+
+/**
+ * This class handles reading, parsing and validating of participant simulator parameters from JSON files.
+ */
+public class ParticipantSimulatorParameterHandler {
+
+    private static final Coder CODER = new StandardCoder();
+
+    /**
+     * Read the parameters from the parameter file.
+     *
+     * @param arguments the arguments passed to simulator
+     * @return the parameters read from the configuration file
+     * @throws ControlLoopException on parameter exceptions
+     */
+    public ParticipantSimulatorParameters getParameters(final ParticipantSimulatorCommandLineArguments arguments)
+            throws ControlLoopException {
+        ParticipantSimulatorParameters parameters = null;
+
+        // Read the parameters
+        try {
+            // Read the parameters from JSON
+            File file = new File(arguments.getFullConfigurationFilePath());
+            parameters = CODER.decode(file, ParticipantSimulatorParameters.class);
+        } catch (final CoderException e) {
+            final String errorMessage = "error reading parameters from \"" + arguments.getConfigurationFilePath()
+                    + "\"\n" + "(" + e.getClass().getSimpleName() + ")";
+            throw new ControlLoopException(Response.Status.NOT_ACCEPTABLE, errorMessage, e);
+        }
+
+        // The JSON processing returns null if there is an empty file
+        if (parameters == null) {
+            final String errorMessage = "no parameters found in \"" + arguments.getConfigurationFilePath() + "\"";
+            throw new ControlLoopException(Response.Status.NOT_ACCEPTABLE, errorMessage);
+        }
+
+        // validate the parameters
+        final GroupValidationResult validationResult = parameters.validate();
+        if (!validationResult.isValid()) {
+            String returnMessage =
+                    "validation error(s) on parameters from \"" + arguments.getConfigurationFilePath() + "\"\n";
+            returnMessage += validationResult.getResult();
+            throw new ControlLoopException(Response.Status.NOT_ACCEPTABLE, returnMessage);
+        }
+
+        return parameters;
+    }
+}
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/parameters/ParticipantSimulatorParameters.java b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/parameters/ParticipantSimulatorParameters.java
new file mode 100644
index 000000000..dd28d4e5b
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/parameters/ParticipantSimulatorParameters.java
@@ -0,0 +1,49 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 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.clamp.controlloop.participant.simulator.main.parameters;
+
+import javax.validation.constraints.NotBlank;
+import lombok.Getter;
+import org.onap.policy.common.endpoints.parameters.RestServerParameters;
+import org.onap.policy.common.parameters.ParameterGroupImpl;
+import org.onap.policy.common.parameters.annotations.NotNull;
+import org.onap.policy.models.provider.PolicyModelsProviderParameters;
+
+/**
+ * Class to hold all parameters needed for the participant simulator.
+ *
+ */
+@NotNull
+@NotBlank
+@Getter
+public class ParticipantSimulatorParameters extends ParameterGroupImpl {
+    private RestServerParameters restServerParameters;
+    private PolicyModelsProviderParameters databaseProviderParameters;
+
+    /**
+     * Create the participant simulator parameter group.
+     *
+     * @param name the parameter group name
+     */
+    public ParticipantSimulatorParameters(final String name) {
+        super(name);
+    }
+}
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/rest/ParticipantSimulatorAafFilter.java b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/rest/ParticipantSimulatorAafFilter.java
new file mode 100644
index 000000000..f200f975a
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/rest/ParticipantSimulatorAafFilter.java
@@ -0,0 +1,38 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2021 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.clamp.controlloop.participant.simulator.main.rest;
+
+import org.onap.policy.common.endpoints.http.server.aaf.AafGranularAuthFilter;
+import org.onap.policy.common.utils.resources.MessageConstants;
+
+/**
+ * Class to manage AAF filters for the participant simulator component.
+ */
+public class ParticipantSimulatorAafFilter extends AafGranularAuthFilter {
+
+    public static final String AAF_NODETYPE = MessageConstants.POLICY_CLAMP + "-participant-simulator";
+    public static final String AAF_ROOT_PERMISSION = DEFAULT_NAMESPACE + "." + AAF_NODETYPE;
+
+    @Override
+    public String getPermissionTypeRoot() {
+        return AAF_ROOT_PERMISSION;
+    }
+}
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/Main.java b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/Main.java
new file mode 100644
index 000000000..e6c93d55d
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/Main.java
@@ -0,0 +1,141 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2021 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.clamp.controlloop.participant.simulator.main.startstop;
+
+import java.util.Arrays;
+import javax.ws.rs.core.Response;
+import lombok.Getter;
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopException;
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopRuntimeException;
+import org.onap.policy.clamp.controlloop.participant.simulator.main.parameters.ParticipantSimulatorParameterHandler;
+import org.onap.policy.clamp.controlloop.participant.simulator.main.parameters.ParticipantSimulatorParameters;
+import org.onap.policy.common.utils.resources.MessageConstants;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * This class initiates participant simulator.
+ */
+public class Main {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(Main.class);
+
+    private ParticipantSimulatorActivator activator;
+
+    @Getter
+    private ParticipantSimulatorParameters parameterGroup;
+
+    /**
+     * Instantiates the control loop participant service.
+     *
+     * @param args the command line arguments
+     */
+    public Main(final String[] args) {
+        final String argumentString = Arrays.toString(args);
+        LOGGER.info("Starting the participant service with arguments - {}", argumentString);
+
+        // Check the arguments
+        final ParticipantSimulatorCommandLineArguments arguments = new ParticipantSimulatorCommandLineArguments();
+        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.info(argumentMessage);
+                return;
+            }
+            // Validate that the arguments are sane
+            arguments.validate();
+
+            // Read the parameters
+            parameterGroup = new ParticipantSimulatorParameterHandler().getParameters(arguments);
+
+            // Now, create the activator for the service
+            activator = new ParticipantSimulatorActivator(parameterGroup);
+
+            // Start the activator
+            activator.start();
+        } catch (Exception exp) {
+            throw new ControlLoopRuntimeException(Response.Status.BAD_REQUEST,
+                String.format(MessageConstants.START_FAILURE_MSG, MessageConstants.POLICY_CLAMP), exp);
+        }
+
+        // Add a shutdown hook to shut everything down in an orderly manner
+        Runtime.getRuntime().addShutdownHook(new ClParticipantSimulatorShutdownHookClass());
+        String successMsg = String.format(MessageConstants.START_SUCCESS_MSG, MessageConstants.POLICY_CLAMP);
+        LOGGER.info(successMsg);
+    }
+
+    /**
+     * Check if main is running.
+     */
+    public boolean isRunning() {
+        return activator != null && activator.isAlive();
+    }
+
+    /**
+     * Shut down Execution.
+     *
+     * @throws ControlLoopException on shutdown errors
+     */
+    public void shutdown() throws ControlLoopException {
+        // clear the parameterGroup variable
+        parameterGroup = null;
+
+        // clear the cl participant activator
+        if (activator != null) {
+            activator.stop();
+        }
+    }
+
+    /**
+     * The Class ClParticipantSimulatorShutdownHookClass terminates the control loop participant service
+     * when its run method is called.
+     */
+    private class ClParticipantSimulatorShutdownHookClass extends Thread {
+        /*
+         * (non-Javadoc)
+         *
+         * @see java.lang.Runnable#run()
+         */
+        @Override
+        public void run() {
+            try {
+                // Shutdown the participant simulator and wait for everything to stop
+                shutdown();
+            } catch (final RuntimeException | ControlLoopException e) {
+                LOGGER.warn("error occured during shut down of the participant simulator", e);
+            }
+        }
+    }
+
+    /**
+     * The main method.
+     *
+     * @param args the arguments
+     */
+    public static void main(final String[] args) {      // NOSONAR
+        /*
+         * NOTE: arguments are validated by the constructor, thus sonar is disabled.
+         */
+
+        new Main(args);
+    }
+}
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/ParticipantSimulatorActivator.java b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/ParticipantSimulatorActivator.java
new file mode 100644
index 000000000..8658750f8
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/ParticipantSimulatorActivator.java
@@ -0,0 +1,71 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 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.clamp.controlloop.participant.simulator.main.startstop;
+
+import java.util.Set;
+import java.util.concurrent.atomic.AtomicReference;
+import lombok.Getter;
+import org.onap.policy.clamp.controlloop.participant.simulator.main.parameters.ParticipantSimulatorParameters;
+import org.onap.policy.clamp.controlloop.participant.simulator.main.rest.ParticipantSimulatorAafFilter;
+import org.onap.policy.clamp.controlloop.participant.simulator.simulation.SimulationHandler;
+import org.onap.policy.common.endpoints.http.server.RestServer;
+import org.onap.policy.common.utils.services.ServiceManagerContainer;
+
+/**
+ * This class activates the participant simulator component as a complete service together with all its controllers,
+ * listeners and handlers.
+ */
+public class ParticipantSimulatorActivator extends ServiceManagerContainer {
+    @Getter
+    private final ParticipantSimulatorParameters parameters;
+
+    /**
+     * Instantiate the activator for the simulator as a complete service.
+     *
+     * @param parameters the parameters for the participant service
+     */
+    public ParticipantSimulatorActivator(final ParticipantSimulatorParameters parameters) {
+        this.parameters = parameters;
+
+        final AtomicReference<SimulationHandler> simulationHandler = new AtomicReference<>();
+        final AtomicReference<RestServer> restServer = new AtomicReference<>();
+
+        // @formatter:off
+        addAction("Simulation Handler",
+            () -> simulationHandler.set(new SimulationHandler(parameters)),
+            () -> simulationHandler.get().close());
+
+        parameters.getRestServerParameters().setName(parameters.getName());
+
+        addAction("REST server",
+            () -> {
+                Set<Class<?>> providerClasses = simulationHandler.get().getProviderClasses();
+
+                RestServer server = new RestServer(parameters.getRestServerParameters(),
+                        ParticipantSimulatorAafFilter.class,
+                        providerClasses.toArray(new Class<?>[providerClasses.size()]));
+                restServer.set(server);
+                restServer.get().start();
+            },
+            () -> restServer.get().stop());
+        // @formatter:on
+    }
+}
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/ParticipantSimulatorCommandLineArguments.java b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/ParticipantSimulatorCommandLineArguments.java
new file mode 100644
index 000000000..24c4b7d2f
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/ParticipantSimulatorCommandLineArguments.java
@@ -0,0 +1,232 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 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.clamp.controlloop.participant.simulator.main.startstop;
+
+import java.io.File;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.net.URL;
+import java.util.Arrays;
+import javax.ws.rs.core.Response;
+import lombok.Getter;
+import lombok.Setter;
+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.commons.lang3.StringUtils;
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopException;
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopRuntimeException;
+import org.onap.policy.common.utils.resources.ResourceUtils;
+
+/**
+ * This class reads and handles command line parameters for the participant simulator service.
+ *
+ */
+public class ParticipantSimulatorCommandLineArguments {
+    private static final String FILE_MESSAGE_PREAMBLE = " file \"";
+    private static final int HELP_LINE_LENGTH = 120;
+
+    private final Options options;
+    @Getter()
+    @Setter()
+    private String configurationFilePath = null;
+
+    /**
+     * Construct the options for the participant component.
+     */
+    public ParticipantSimulatorCommandLineArguments() {
+        //@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 participant")
+                .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 participant parameters")
+                .hasArg()
+                .argName("CONFIG_FILE")
+                .required(false)
+                .type(String.class)
+                .build());
+        //@formatter:on
+    }
+
+    /**
+     * Construct the options for the participant component and parse in the given arguments.
+     *
+     * @param args The command line arguments
+     */
+    public ParticipantSimulatorCommandLineArguments(final String[] args) {
+        // Set up the options with the default constructor
+        this();
+
+        // Parse the arguments
+        try {
+            parse(args);
+        } catch (final ControlLoopException e) {
+            throw new ControlLoopRuntimeException(Response.Status.NOT_ACCEPTABLE,
+                    "parse error on participant 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 ControlLoopException on command argument errors
+     */
+    public String parse(final String[] args) throws ControlLoopException {
+        // Clear all our arguments
+        setConfigurationFilePath(null);
+
+        CommandLine commandLine = null;
+        try {
+            commandLine = new DefaultParser().parse(options, args);
+        } catch (final ParseException e) {
+            throw new ControlLoopException(Response.Status.NOT_ACCEPTABLE,
+                    "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) {
+            throw new ControlLoopException(Response.Status.NOT_ACCEPTABLE,
+                    "too many command line arguments specified : " + Arrays.toString(args));
+        }
+
+        if (commandLine.hasOption('h')) {
+            return help(Main.class.getName());
+        }
+
+        if (commandLine.hasOption('v')) {
+            return version();
+        }
+
+        if (commandLine.hasOption('c')) {
+            setConfigurationFilePath(commandLine.getOptionValue('c'));
+        }
+
+        return null;
+    }
+
+    /**
+     * Validate the command line options.
+     *
+     * @throws ControlLoopException on command argument validation errors
+     */
+    public void validate() throws ControlLoopException {
+        validateReadableFile("participant configuration", configurationFilePath);
+    }
+
+    /**
+     * Print version information for participant.
+     *
+     * @return the version string
+     */
+    public String version() {
+        return ResourceUtils.getResourceAsString("version.txt");
+    }
+
+    /**
+     * Print help information for participant.
+     *
+     * @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 full expanded configuration file path.
+     *
+     * @return the configuration file path
+     */
+    public String getFullConfigurationFilePath() {
+        return ResourceUtils.getFilePath4Resource(getConfigurationFilePath());
+    }
+
+    /**
+     * Check set configuration file path.
+     *
+     * @return true, if check set configuration file path
+     */
+    public boolean checkSetConfigurationFilePath() {
+        return !StringUtils.isEmpty(configurationFilePath);
+    }
+
+    /**
+     * Validate readable file.
+     *
+     * @param fileTag the file tag
+     * @param fileName the file name
+     * @throws ControlLoopException on the file name passed as a parameter
+     */
+    private void validateReadableFile(final String fileTag, final String fileName) throws ControlLoopException {
+        if (StringUtils.isEmpty(fileName)) {
+            throw new ControlLoopException(Response.Status.NOT_ACCEPTABLE,
+                    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 ControlLoopException(Response.Status.NOT_ACCEPTABLE,
+                    fileTag + FILE_MESSAGE_PREAMBLE + fileName + "\" does not exist");
+        }
+
+        final File theFile = new File(fileUrl.getPath());
+        if (!theFile.exists()) {
+            throw new ControlLoopException(Response.Status.NOT_ACCEPTABLE,
+                    fileTag + FILE_MESSAGE_PREAMBLE + fileName + "\" does not exist");
+        }
+        if (!theFile.isFile()) {
+            throw new ControlLoopException(Response.Status.NOT_ACCEPTABLE,
+                    fileTag + FILE_MESSAGE_PREAMBLE + fileName + "\" is not a normal file");
+        }
+        if (!theFile.canRead()) {
+            throw new ControlLoopException(Response.Status.NOT_ACCEPTABLE,
+                    fileTag + FILE_MESSAGE_PREAMBLE + fileName + "\" is ureadable");
+        }
+    }
+}
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/SimulationHandler.java b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/SimulationHandler.java
new file mode 100644
index 000000000..7260318f0
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/SimulationHandler.java
@@ -0,0 +1,75 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 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.clamp.controlloop.participant.simulator.simulation;
+
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import org.onap.policy.clamp.controlloop.common.handler.ControlLoopHandler;
+import org.onap.policy.clamp.controlloop.participant.simulator.main.parameters.ParticipantSimulatorParameters;
+import org.onap.policy.clamp.controlloop.participant.simulator.simulation.rest.SimulationQueryElementController;
+import org.onap.policy.common.endpoints.event.comm.TopicSink;
+import org.onap.policy.common.endpoints.listeners.MessageTypeDispatcher;
+
+/**
+ * This class handles simulation of participants and control loop elements.
+ *
+ * <p/>It is effectively a singleton that is started at system start.
+ */
+public class SimulationHandler extends ControlLoopHandler {
+    /**
+     * Create a handler.
+     *
+     * @param parameters the parameters for access to the database
+     */
+    public SimulationHandler(ParticipantSimulatorParameters parameters) {
+        super(parameters.getDatabaseProviderParameters());
+    }
+
+    @Override
+    public Set<Class<?>> getProviderClasses() {
+        Set<Class<?>> providerClasses = new HashSet<>();
+
+        providerClasses.add(SimulationQueryElementController.class);
+
+        return providerClasses;
+    }
+
+    @Override
+    public void startAndRegisterListeners(MessageTypeDispatcher msgDispatcher) {
+        // No topic communication on this handler
+    }
+
+    @Override
+    public void startAndRegisterPublishers(List<TopicSink> topicSinks) {
+        // No topic communication on this handler
+    }
+
+    @Override
+    public void stopAndUnregisterPublishers() {
+        // No topic communication on this handler
+    }
+
+    @Override
+    public void stopAndUnregisterListeners(MessageTypeDispatcher msgDispatcher) {
+        // No topic communication on this handler
+    }
+}
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/rest/SimulationQueryElementController.java b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/rest/SimulationQueryElementController.java
new file mode 100644
index 000000000..2165da797
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/rest/SimulationQueryElementController.java
@@ -0,0 +1,31 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 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.clamp.controlloop.participant.simulator.simulation.rest;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Class to provide REST end points for participant simulator to query details of controlLoopElements.
+ */
+public class SimulationQueryElementController {
+    private static final Logger LOGGER = LoggerFactory.getLogger(SimulationQueryElementController.class);
+}
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/resources/config/CDSParticipantConfig.json b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/resources/config/CDSParticipantConfig.json
new file mode 100644
index 000000000..80f035cb2
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/resources/config/CDSParticipantConfig.json
@@ -0,0 +1,27 @@
+{
+    "name":"ParticipantParameterGroup",
+    "participantStatusParameters":{
+        "timeIntervalMs": 10000,
+        "description":"Participant Status",
+        "participantId":{
+            "name": "CDSParticipant0",
+            "version":"1.0.0"
+        },
+        "participantDefinition":{
+            "name": "org.onap.ccsdk.cds.controlloop.CdsControlLoopParticipant",
+            "version":"3.2.1"
+        }
+    },
+    "topicParameterGroup": {
+        "topicSources" : [{
+            "topic" : "POLICY-CLRUNTIME-PARTICIPANT",
+            "servers" : [ "127.0.0.1:3904" ],
+            "topicCommInfrastructure" : "dmaap"
+        }],
+        "topicSinks" : [{
+            "topic" : "POLICY-CLRUNTIME-PARTICIPANT",
+            "servers" : [ "127.0.0.1:3904" ],
+            "topicCommInfrastructure" : "dmaap"
+        }]
+    }
+}
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/resources/config/DCAEParticipantConfig.json b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/resources/config/DCAEParticipantConfig.json
new file mode 100644
index 000000000..5c3d05d6f
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/resources/config/DCAEParticipantConfig.json
@@ -0,0 +1,27 @@
+{
+    "name":"ParticipantParameterGroup",
+    "participantStatusParameters":{
+        "timeIntervalMs": 10000,
+        "description":"Participant Status",
+        "participantId":{
+            "name": "DCAEParticipant0",
+            "version":"1.0.0"
+        },
+        "participantDefinition":{
+            "name": "org.onap.dcae.controlloop.DCAEMicroserviceControlLoopParticipant",
+            "version":"2.3.4"
+        }
+    },
+    "topicParameterGroup": {
+        "topicSources" : [{
+            "topic" : "POLICY-CLRUNTIME-PARTICIPANT",
+            "servers" : [ "127.0.0.1:3904" ],
+            "topicCommInfrastructure" : "dmaap"
+        }],
+        "topicSinks" : [{
+            "topic" : "POLICY-CLRUNTIME-PARTICIPANT",
+            "servers" : [ "127.0.0.1:3904" ],
+            "topicCommInfrastructure" : "dmaap"
+        }]
+    }
+}
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/resources/config/PolicyParticipantConfig.json b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/resources/config/PolicyParticipantConfig.json
new file mode 100644
index 000000000..57c578451
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/resources/config/PolicyParticipantConfig.json
@@ -0,0 +1,27 @@
+{
+    "name":"ParticipantParameterGroup",
+    "participantStatusParameters":{
+        "timeIntervalMs":10000,
+        "description":"Participant Status",
+        "participantId":{
+            "name": "PolicyParticipant0",
+            "version":"1.0.0"
+        },
+        "participantDefinition":{
+            "name": "org.onap.policy.controlloop.PolicyControlLoopParticipant",
+            "version":"2.3.1"
+        }
+    },
+    "topicParameterGroup": {
+        "topicSources" : [{
+            "topic" : "POLICY-CLRUNTIME-PARTICIPANT",
+            "servers" : [ "127.0.0.1:3904" ],
+            "topicCommInfrastructure" : "dmaap"
+        }],
+        "topicSinks" : [{
+            "topic" : "POLICY-CLRUNTIME-PARTICIPANT",
+            "servers" : [ "127.0.0.1:3904" ],
+            "topicCommInfrastructure" : "dmaap"
+        }]
+    }
+}
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/resources/version.txt b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/resources/version.txt
new file mode 100644
index 000000000..dbd67585f
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/main/resources/version.txt
@@ -0,0 +1,4 @@
+ONAP Tosca defined control loop Participant
+Version: ${project.version}
+Built (UTC): ${maven.build.timestamp}
+ONAP https://wiki.onap.org
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/java/org/onap/policy/clamp/controlloop/participant/simulator/main/parameters/CommonTestData.java b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/java/org/onap/policy/clamp/controlloop/participant/simulator/main/parameters/CommonTestData.java
new file mode 100644
index 000000000..e0e001743
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/java/org/onap/policy/clamp/controlloop/participant/simulator/main/parameters/CommonTestData.java
@@ -0,0 +1,251 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 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.clamp.controlloop.participant.simulator.main.parameters;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+import java.util.TreeMap;
+import javax.ws.rs.core.Response;
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopRuntimeException;
+import org.onap.policy.common.endpoints.parameters.TopicParameters;
+import org.onap.policy.common.parameters.ParameterGroup;
+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.tosca.authorative.concepts.ToscaConceptIdentifier;
+
+/**
+ * Class to hold/create all parameters for test cases.
+ */
+public class CommonTestData {
+    public static final String PARTICIPANT_GROUP_NAME = "ControlLoopParticipantGroup";
+    public static final String DESCRIPTION = "Participant description";
+    public static final long TIME_INTERVAL = 2000;
+    public static final List<TopicParameters> TOPIC_PARAMS = Arrays.asList(getTopicParams());
+    private static final String REST_SERVER_PASSWORD = "zb!XztG34";
+    private static final String REST_SERVER_USER = "healthcheck";
+    private static final int REST_SERVER_PORT = 6969;
+    private static final String REST_SERVER_HOST = "0.0.0.0";
+    private static final boolean REST_SERVER_HTTPS = true;
+    private static final boolean REST_SERVER_AAF = false;
+
+    public static final Coder coder = new StandardCoder();
+
+    /**
+     * Converts the contents of a map to a parameter class.
+     *
+     * @param source property map
+     * @param clazz class of object to be created from the map
+     * @return a new object represented by the map
+     */
+    public <T extends ParameterGroup> T toObject(final Map<String, Object> source, final Class<T> clazz) {
+        try {
+            return coder.convert(source, clazz);
+        } catch (final CoderException e) {
+            throw new RuntimeException("cannot create " + clazz.getName() + " from map", e);
+        }
+    }
+
+    /**
+     * Returns a property map for a ApexStarterParameterGroup map for test cases.
+     *
+     * @param name name of the parameters
+     *
+     * @return a property map suitable for constructing an object
+     */
+    public Map<String, Object> getParticipantParameterGroupMap(final String name) {
+        final Map<String, Object> map = new TreeMap<>();
+
+        map.put("name", name);
+        map.put("restServerParameters", getRestServerParametersMap(false));
+        map.put("intermediaryParameters", getIntermediaryParametersMap(false));
+        map.put("databaseProviderParameters", getDatabaseProviderParametersMap(false));
+        return map;
+    }
+
+    /**
+     * Returns a property map for a RestServerParameters map for test cases.
+     *
+     * @param isEmpty boolean value to represent that object created should be empty or not
+     * @return a property map suitable for constructing an object
+     */
+    public Map<String, Object> getRestServerParametersMap(final boolean isEmpty) {
+        final Map<String, Object> map = new TreeMap<>();
+        map.put("https", REST_SERVER_HTTPS);
+        map.put("aaf", REST_SERVER_AAF);
+
+        if (!isEmpty) {
+            map.put("host", REST_SERVER_HOST);
+            map.put("port", REST_SERVER_PORT);
+            map.put("userName", REST_SERVER_USER);
+            map.put("password", REST_SERVER_PASSWORD);
+        }
+
+        return map;
+    }
+
+    /**
+     * Returns a property map for a databaseProviderParameters map for test cases.
+     *
+     * @param isEmpty boolean value to represent that object created should be empty or not
+     * @return a property map suitable for constructing an object
+     */
+    public Map<String, Object> getDatabaseProviderParametersMap(final boolean isEmpty) {
+        final Map<String, Object> map = new TreeMap<>();
+        if (!isEmpty) {
+            map.put("name", "PolicyProviderParameterGroup");
+            map.put("implementation", "org.onap.policy.models.provider.impl.DatabasePolicyModelsProviderImpl");
+            map.put("databaseDriver", "org.h2.Driver");
+            map.put("databaseUrl", "jdbc:h2:mem:testdb");
+            map.put("databaseUser", "policy");
+            map.put("databasePassword", "P01icY");
+            map.put("persistenceUnit", "ToscaConceptTest");
+        }
+
+        return map;
+    }
+
+    /**
+     * Returns a property map for a intermediaryParameters map for test cases.
+     *
+     * @param isEmpty boolean value to represent that object created should be empty or not
+     * @return a property map suitable for constructing an object
+     */
+    public Map<String, Object> getIntermediaryParametersMap(final boolean isEmpty) {
+        final Map<String, Object> map = new TreeMap<>();
+        if (!isEmpty) {
+            map.put("name", "Participant parameters");
+            map.put("reportingTimeInterval", TIME_INTERVAL);
+            map.put("description", DESCRIPTION);
+            map.put("participantId", getParticipantId());
+            map.put("participantType", getParticipantId());
+            map.put("clampControlLoopTopics", getTopicParametersMap(false));
+        }
+
+        return map;
+    }
+
+    /**
+     * Returns a property map for a TopicParameters map for test cases.
+     *
+     * @param isEmpty boolean value to represent that object created should be empty or not
+     * @return a property map suitable for constructing an object
+     */
+    public Map<String, Object> getTopicParametersMap(final boolean isEmpty) {
+        final Map<String, Object> map = new TreeMap<>();
+        if (!isEmpty) {
+            map.put("topicSources", TOPIC_PARAMS);
+            map.put("topicSinks", TOPIC_PARAMS);
+        }
+        return map;
+    }
+
+    /**
+     * Returns topic parameters for test cases.
+     *
+     * @return topic parameters
+     */
+    public static TopicParameters getTopicParams() {
+        final TopicParameters topicParams = new TopicParameters();
+        topicParams.setTopic("POLICY-CLRUNTIME-PARTICIPANT");
+        topicParams.setTopicCommInfrastructure("dmaap");
+        topicParams.setServers(Arrays.asList("localhost"));
+        return topicParams;
+    }
+
+    /**
+     * Returns participantId for test cases.
+     *
+     * @return participant Id
+     */
+    public static ToscaConceptIdentifier getParticipantId() {
+        final ToscaConceptIdentifier participantId = new ToscaConceptIdentifier();
+        participantId.setName("CDSParticipant0");
+        participantId.setVersion("1.0.0");
+        return participantId;
+    }
+
+    /**
+     * Gets the standard participant parameters.
+     *
+     * @param port port to be inserted into the parameters
+     * @return the standard participant parameters
+     */
+    public ParticipantSimulatorParameters getParticipantParameterGroup(int port) {
+        try {
+            return coder.decode(getParticipantParameterGroupAsString(port), ParticipantSimulatorParameters.class);
+
+        } catch (CoderException e) {
+            throw new ControlLoopRuntimeException(Response.Status.NOT_ACCEPTABLE,
+                    "cannot read participant parameters", e);
+        }
+    }
+
+    /**
+     * Gets the standard participant parameters, as a String.
+     *
+     * @param port port to be inserted into the parameters
+     * @return the standard participant parameters
+     */
+    public static String getParticipantParameterGroupAsString(int port) {
+
+        try {
+            File file = new File(getParamFile());
+            String json = new String(Files.readAllBytes(file.toPath()), StandardCharsets.UTF_8);
+
+            json = json.replace("${port}", String.valueOf(port));
+            json = json.replace("${dbName}", "jdbc:h2:mem:testdb");
+
+            return json;
+
+        } catch (IOException e) {
+            throw new ControlLoopRuntimeException(Response.Status.NOT_ACCEPTABLE,
+                    "cannot read participant parameters", e);
+
+        }
+    }
+
+    /**
+     * Gets the full path to the parameter file, which may vary depending on whether or
+     * not this is an end-to-end test.
+     *
+     * @return the parameter file name
+     */
+    private static String getParamFile() {
+        String paramFile = "src/test/resources/parameters/TestParametersStd.json";
+        return paramFile;
+    }
+
+    /**
+     * Nulls out a field within a JSON string.
+     * @param json JSON string
+     * @param field field to be nulled out
+     * @return a new JSON string with the field nulled out
+     */
+    public String nullifyField(String json, String field) {
+        return json.replace(field + "\"", field + "\":null, \"" + field + "Xxx\"");
+    }
+}
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/java/org/onap/policy/clamp/controlloop/participant/simulator/main/parameters/TestParticipantSimulatorParameterHandler.java b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/java/org/onap/policy/clamp/controlloop/participant/simulator/main/parameters/TestParticipantSimulatorParameterHandler.java
new file mode 100644
index 000000000..f8b11d723
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/java/org/onap/policy/clamp/controlloop/participant/simulator/main/parameters/TestParticipantSimulatorParameterHandler.java
@@ -0,0 +1,120 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 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.clamp.controlloop.participant.simulator.main.parameters;
+
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import java.io.FileNotFoundException;
+import org.apache.commons.io.DirectoryWalker.CancelException;
+import org.junit.Test;
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopException;
+import org.onap.policy.clamp.controlloop.participant.simulator.main.startstop.ParticipantSimulatorCommandLineArguments;
+import org.onap.policy.common.utils.coder.CoderException;
+
+/**
+ * Class to perform unit test of {@link ParticipantParameterHandler}.
+ */
+public class TestParticipantSimulatorParameterHandler {
+
+    @Test
+    public void testParameterHandlerNoParameterFile() throws ControlLoopException {
+        final String[] emptyArgumentString = { "-c", "src/test/resources/parameters/NoParametersFile.json" };
+
+        final ParticipantSimulatorCommandLineArguments emptyArguments = new ParticipantSimulatorCommandLineArguments();
+        emptyArguments.parse(emptyArgumentString);
+
+        assertThatThrownBy(() -> new ParticipantSimulatorParameterHandler().getParameters(emptyArguments))
+            .hasCauseInstanceOf(CoderException.class)
+            .hasRootCauseInstanceOf(FileNotFoundException.class);
+    }
+
+    @Test
+    public void testParameterHandlerInvalidParameters() throws ControlLoopException {
+        final String[] invalidArgumentString = { "-c", "src/test/resources/parameters/InvalidParameters.json" };
+
+        final ParticipantSimulatorCommandLineArguments invalidArguments =
+                new ParticipantSimulatorCommandLineArguments();
+        invalidArguments.parse(invalidArgumentString);
+
+        assertThatThrownBy(() -> new ParticipantSimulatorParameterHandler().getParameters(invalidArguments))
+            .hasMessageStartingWith("error reading parameters from")
+            .hasCauseInstanceOf(CoderException.class);
+    }
+
+    @Test
+    public void testParameterHandlerNoParameters() throws CancelException, ControlLoopException {
+        final String[] noArgumentString = { "-c", "src/test/resources/parameters/EmptyParameters.json" };
+
+        final ParticipantSimulatorCommandLineArguments noArguments = new ParticipantSimulatorCommandLineArguments();
+        noArguments.parse(noArgumentString);
+
+        assertThatThrownBy(() -> new ParticipantSimulatorParameterHandler().getParameters(noArguments))
+            .hasMessageContaining("no parameters found");
+    }
+
+    @Test
+    public void testParticipantParameterGroup() throws ControlLoopException {
+        final String[] participantConfigParameters = { "-c", "src/test/resources/parameters/TestParameters.json"};
+
+        final ParticipantSimulatorCommandLineArguments arguments = new ParticipantSimulatorCommandLineArguments();
+        arguments.parse(participantConfigParameters);
+
+        final ParticipantSimulatorParameters parGroup = new ParticipantSimulatorParameterHandler()
+                .getParameters(arguments);
+        assertTrue(arguments.checkSetConfigurationFilePath());
+        assertEquals(CommonTestData.PARTICIPANT_GROUP_NAME, parGroup.getName());
+    }
+
+    @Test
+    public void testParticipantVersion() throws ControlLoopException {
+        final String[] participantConfigParameters = { "-v" };
+        final ParticipantSimulatorCommandLineArguments arguments = new ParticipantSimulatorCommandLineArguments();
+        final String version = arguments.parse(participantConfigParameters);
+        assertTrue(version.startsWith("ONAP Tosca defined control loop Participant"));
+    }
+
+    @Test
+    public void testParticipantHelp() throws ControlLoopException {
+        final String[] participantConfigParameters = { "-h" };
+        final ParticipantSimulatorCommandLineArguments arguments = new ParticipantSimulatorCommandLineArguments();
+        final String help = arguments.parse(participantConfigParameters);
+        assertTrue(help.startsWith("usage:"));
+    }
+
+    @Test
+    public void testParticipant_TooManyArguments() throws ControlLoopException {
+        final String[] participantConfigParameters = { "-c", "src/test/resources/parameters/TestParameters.json",
+                                                       "TooMany"};
+        final ParticipantSimulatorCommandLineArguments arguments = new ParticipantSimulatorCommandLineArguments();
+        assertThatThrownBy(() -> arguments.parse(participantConfigParameters))
+            .hasMessageStartingWith("too many command line arguments specified");
+    }
+
+    @Test
+    public void testParticipantInvalidOption() throws ControlLoopException {
+        final String[] participantConfigParameters = { "-d" };
+        final ParticipantSimulatorCommandLineArguments arguments = new ParticipantSimulatorCommandLineArguments();
+        assertThatThrownBy(() -> arguments.parse(participantConfigParameters))
+            .hasMessageStartingWith("invalid command line arguments specified");
+    }
+}
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/java/org/onap/policy/clamp/controlloop/participant/simulator/main/parameters/TestParticipantSimulatorParameters.java b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/java/org/onap/policy/clamp/controlloop/participant/simulator/main/parameters/TestParticipantSimulatorParameters.java
new file mode 100644
index 000000000..dcfbe94b7
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/java/org/onap/policy/clamp/controlloop/participant/simulator/main/parameters/TestParticipantSimulatorParameters.java
@@ -0,0 +1,84 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 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.clamp.controlloop.participant.simulator.main.parameters;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+import org.onap.policy.common.parameters.GroupValidationResult;
+
+/**
+ * Class to perform unit test of {@link ParticipantParameterGroup}.
+ */
+public class TestParticipantSimulatorParameters {
+    CommonTestData commonTestData = new CommonTestData();
+
+    @Test
+    public void testParticipantParameterGroup_Named() {
+        final ParticipantSimulatorParameters participantParameters = new ParticipantSimulatorParameters("my-name");
+        assertEquals("my-name", participantParameters.getName());
+    }
+
+    @Test
+    public void testParticipantParameterGroup() {
+        final ParticipantSimulatorParameters participantParameters = commonTestData.toObject(
+                commonTestData.getParticipantParameterGroupMap(CommonTestData.PARTICIPANT_GROUP_NAME),
+                ParticipantSimulatorParameters.class);
+        assertThat(participantParameters.validate().isValid()).isTrue();
+        assertEquals(CommonTestData.PARTICIPANT_GROUP_NAME, participantParameters.getName());
+    }
+
+    @Test
+    public void testParticipantParameterGroup_NullName() {
+        final ParticipantSimulatorParameters participantParameters = commonTestData
+                .toObject(commonTestData.getParticipantParameterGroupMap(null),
+                        ParticipantSimulatorParameters.class);
+        final GroupValidationResult validationResult = participantParameters.validate();
+        assertFalse(validationResult.isValid());
+        assertEquals(null, participantParameters.getName());
+        assertTrue(validationResult.getResult().contains("is null"));
+    }
+
+    @Test
+    public void testParticipantParameterGroup_EmptyName() {
+        final ParticipantSimulatorParameters participantParameters = commonTestData
+                .toObject(commonTestData.getParticipantParameterGroupMap(""),
+                                ParticipantSimulatorParameters.class);
+        final GroupValidationResult validationResult = participantParameters.validate();
+        assertFalse(validationResult.isValid());
+        assertEquals("", participantParameters.getName());
+        assertTrue(validationResult.getResult().contains(
+                "field \"name\" type \"java.lang.String\" value \"\" INVALID, " + "must be a non-blank string"));
+    }
+
+    @Test
+    public void testParticipantParameterGroup_SetName() {
+        final ParticipantSimulatorParameters participantParameters = commonTestData.toObject(
+                commonTestData.getParticipantParameterGroupMap(CommonTestData.PARTICIPANT_GROUP_NAME),
+                ParticipantSimulatorParameters.class);
+        participantParameters.setName("ParticipantNewGroup");
+        assertThat(participantParameters.validate().isValid()).isTrue();
+        assertEquals("ParticipantNewGroup", participantParameters.getName());
+    }
+}
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/TestMain.java b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/TestMain.java
new file mode 100644
index 000000000..137bec205
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/TestMain.java
@@ -0,0 +1,121 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 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.clamp.controlloop.participant.simulator.main.startstop;
+
+import static org.assertj.core.api.Assertions.assertThatCode;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.onap.policy.clamp.controlloop.common.ControlLoopConstants;
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopRuntimeException;
+import org.onap.policy.common.utils.resources.MessageConstants;
+
+/**
+ * Class to perform unit test of {@link Main}}.
+ */
+public class TestMain {
+
+    @Test
+    public void testMain_Help() {
+        final String[] configParameters = {"-h"};
+        Main main = new Main(configParameters);
+        assertFalse(main.isRunning());
+    }
+
+    @Test
+    public void testMain_Version() {
+        final String[] configParameters = {"-v"};
+        Main main = new Main(configParameters);
+        assertFalse(main.isRunning());
+    }
+
+    @Test
+    public void testMain_Valid() {
+        final String[] configParameters = {"-c", "src/test/resources/parameters/TestParameters.json"};
+        Main main = new Main(configParameters);
+        assertTrue(main.isRunning());
+
+        assertThatCode(() -> main.shutdown()).doesNotThrowAnyException();
+
+        assertFalse(main.isRunning());
+    }
+
+    @Test
+    public void testMain_NoParameter() {
+        assertThatConfigParameterThrownException(new String[] {});
+    }
+
+    @Test
+    public void testMain_FilePathNotDefined() {
+        assertThatConfigParameterThrownException(new String[] {"-c"});
+    }
+
+    @Test
+    public void testMain_TooManyCommand() {
+        assertThatConfigParameterThrownException(new String[] {"-h", "d"});
+    }
+
+    @Test
+    public void testMain_WrongParameter() {
+        assertThatConfigParameterThrownException(new String[] {"-d"});
+    }
+
+    private void assertThatConfigParameterThrownException(final String[] configParameters) {
+        assertThatThrownBy(() -> Main.main(configParameters)).isInstanceOf(ControlLoopRuntimeException.class)
+                .hasMessage(String.format(MessageConstants.START_FAILURE_MSG, MessageConstants.POLICY_CLAMP));
+    }
+
+    @Test
+    public void testParticipant_NoFileWithThisName() {
+        assertThatConfigFileThrownException("src/test/resources/parameters/NoFileWithThisName.json");
+    }
+
+    @Test
+    public void testParticipant_NotValidFile() {
+        assertThatConfigFileThrownException("src/test/resources/parameters");
+    }
+
+    @Test
+    public void testParticipant_FileEmpty() {
+        assertThatConfigFileThrownException("src/test/resources/parameters/EmptyParameters.json");
+    }
+
+    @Test
+    public void testParticipant_NoParameters() {
+        assertThatConfigFileThrownException("src/test/resources/parameters/NoParameters.json");
+    }
+
+    @Test
+    public void testParticipant_InvalidParameters() {
+        assertThatConfigFileThrownException("src/test/resources/parameters/InvalidParameters.json");
+    }
+
+    private void assertThatConfigFileThrownException(final String configFilePath) {
+        final String[] configParameters = new String[] {"-c", configFilePath};
+        assertThatThrownBy(() -> new Main(configParameters)).isInstanceOf(ControlLoopRuntimeException.class)
+                .hasMessage(String.format(MessageConstants.START_FAILURE_MSG, MessageConstants.POLICY_CLAMP));
+    }
+}
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/TestParticipantSimulatorActivator.java b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/TestParticipantSimulatorActivator.java
new file mode 100644
index 000000000..c695d5f24
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/TestParticipantSimulatorActivator.java
@@ -0,0 +1,89 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 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.clamp.controlloop.participant.simulator.main.startstop;
+
+import static org.assertj.core.api.Assertions.assertThatIllegalStateException;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.onap.policy.clamp.controlloop.participant.simulator.main.parameters.CommonTestData;
+import org.onap.policy.clamp.controlloop.participant.simulator.main.parameters.ParticipantSimulatorParameterHandler;
+import org.onap.policy.clamp.controlloop.participant.simulator.main.parameters.ParticipantSimulatorParameters;
+
+/**
+ * Class to perform unit test of {@link ParticipantActivator}}.
+ */
+public class TestParticipantSimulatorActivator {
+
+    private static ParticipantSimulatorActivator activator;
+
+    /**
+     * Initializes an activator.
+     *
+     * @throws Exception if an error occurs
+     */
+    @BeforeClass
+    public static void setUp() throws Exception {
+        final String[] participantConfigParameters = { "-c", "src/test/resources/parameters/TestParameters.json"};
+        final ParticipantSimulatorCommandLineArguments arguments =
+                new ParticipantSimulatorCommandLineArguments(participantConfigParameters);
+        final ParticipantSimulatorParameters parGroup =
+                new ParticipantSimulatorParameterHandler().getParameters(arguments);
+        activator = new ParticipantSimulatorActivator(parGroup);
+    }
+
+    /**
+     * Method for cleanup after each test.
+     *
+     * @throws Exception if an error occurs
+     */
+    @AfterClass
+    public static void teardown() throws Exception {
+        // shut down activator
+        if (activator != null && activator.isAlive()) {
+            activator.shutdown();
+        }
+    }
+
+    @Test
+    public void testParticipantActivator() {
+        activator.start();
+        assertTrue(activator.isAlive());
+        assertTrue(activator.getParameters().isValid());
+        assertEquals(CommonTestData.PARTICIPANT_GROUP_NAME, activator.getParameters().getName());
+
+        // repeat - should throw an exception
+        assertThatIllegalStateException().isThrownBy(() -> activator.start());
+        assertTrue(activator.isAlive());
+        assertTrue(activator.getParameters().isValid());
+
+        activator.shutdown();
+        assertFalse(activator.isAlive());
+
+        // repeat - should throw an exception
+        assertThatIllegalStateException().isThrownBy(() -> activator.shutdown());
+        assertFalse(activator.isAlive());
+    }
+}
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/EmptyParameters.json b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/EmptyParameters.json
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/EmptyParameters.json
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/InvalidParameters.json b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/InvalidParameters.json
new file mode 100644
index 000000000..1035ccb67
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/InvalidParameters.json
@@ -0,0 +1,3 @@
+{
+  "name": "
+}
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/NoParameters.json b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/NoParameters.json
new file mode 100644
index 000000000..7a73a41bf
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/NoParameters.json
@@ -0,0 +1,2 @@
+{
+}
\ No newline at end of file
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/TestParameters.json b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/TestParameters.json
new file mode 100644
index 000000000..82bb917a9
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/TestParameters.json
@@ -0,0 +1,61 @@
+{
+    "name": "ControlLoopParticipantGroup",
+    "restServerParameters": {
+        "host": "0.0.0.0",
+        "port": 6969,
+        "userName": "healthcheck",
+        "password": "zb!XztG34",
+        "https": false,
+        "aaf": false
+    },
+    "intermediaryParameters": {
+        "name": "Participant parameters",
+        "reportingTimeInterval": 120000,
+        "description": "Participant Description",
+        "participantId": {
+            "name": "CDSParticipant0",
+            "version": "1.0.0"
+        },
+        "participantType": {
+            "name": "CDSParticipant0",
+            "version": "1.0.0"
+        },
+        "clampControlLoopTopics": {
+            "topicSources": [
+                {
+                    "topic": "POLICY-CLRUNTIME-PARTICIPANT",
+                    "servers": [
+                        "localhost"
+                    ],
+                    "topicCommInfrastructure": "dmaap",
+                    "fetchTimeout": 15000
+                }
+            ],
+            "topicSinks": [
+                {
+                    "topic": "POLICY-CLRUNTIME-PARTICIPANT",
+                    "servers": [
+                        "localhost"
+                    ],
+                    "topicCommInfrastructure": "dmaap"
+                },
+                {
+                    "topic": "POLICY-NOTIFICATION",
+                    "servers": [
+                        "localhost"
+                    ],
+                    "topicCommInfrastructure": "dmaap"
+                }
+            ]
+        }
+    },
+    "databaseProviderParameters": {
+        "name": "PolicyProviderParameterGroup",
+        "implementation": "org.onap.policy.models.provider.impl.DatabasePolicyModelsProviderImpl",
+        "databaseDriver": "org.h2.Driver",
+        "databaseUrl": "jdbc:h2:mem:testdb",
+        "databaseUser": "policy",
+        "databasePassword": "P01icY",
+        "persistenceUnit": "ToscaConceptTest"
+    }
+}
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/TestParametersStd.json b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/TestParametersStd.json
new file mode 100644
index 000000000..1599fc395
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/TestParametersStd.json
@@ -0,0 +1,61 @@
+{
+    "name": "ControlLoopParticipantGroup",
+     "restServerParameters": {
+        "host": "0.0.0.0",
+        "port": ${port},
+        "userName": "healthcheck",
+        "password": "zb!XztG34",
+        "https": false,
+        "aaf": false
+    },
+    "intermediaryParameters": {
+        "name": "Participant parameters",
+        "reportingTimeInterval": 120000,
+        "description": "Participant Description",
+        "participantId": {
+            "name": "CDSParticipant0",
+            "version": "1.0.0"
+        },
+        "participantType": {
+            "name": "CDSParticipant0",
+            "version": "1.0.0"
+        },
+        "clampControlLoopTopics": {
+            "topicSources": [
+                {
+                    "topic": "POLICY-CLRUNTIME-PARTICIPANT",
+                    "servers": [
+                        "localhost"
+                    ],
+                    "topicCommInfrastructure": "dmaap",
+                    "fetchTimeout": 15000
+                }
+            ],
+            "topicSinks": [
+                {
+                    "topic": "POLICY-CLRUNTIME-PARTICIPANT",
+                    "servers": [
+                        "localhost"
+                    ],
+                    "topicCommInfrastructure": "dmaap"
+                },
+                {
+                    "topic": "POLICY-NOTIFICATION",
+                    "servers": [
+                        "localhost"
+                    ],
+                    "topicCommInfrastructure": "dmaap"
+                }
+            ]
+        }
+    },
+    "databaseProviderParameters": {
+        "name": "PolicyProviderParameterGroup",
+        "implementation": "org.onap.policy.models.provider.impl.DatabasePolicyModelsProviderImpl",
+        "databaseDriver": "org.h2.Driver",
+        "databaseUrl": "jdbc:h2:mem:testdb",
+        "databaseUser": "policy",
+        "databasePassword": "P01icY",
+        "persistenceUnit": "ToscaConceptTest"
+    }
+}
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/Unreadable.json b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/Unreadable.json
new file mode 100644
index 000000000..f11bd8c95
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/Unreadable.json
@@ -0,0 +1,81 @@
+{
+    "name": "ControlLoopRuntimeGroup",
+    "restServerParameters": {
+        "host": "0.0.0.0",
+        "port": 6969,
+        "userName": "healthcheck",
+        "password": "zb!XztG34",
+        "https": false,
+        "aaf": false
+    },
+    "participantParameters": {
+        "heartBeatMs": 120000,
+        "updateParameters": {
+            "maxRetryCount": 1,
+            "maxWaitMs": 30000
+        },
+        "stateChangeParameters": {
+            "maxRetryCount": 1,
+            "maxWaitMs": 30000
+        }
+    },
+    "databaseProviderParameters": {
+        "name": "PolicyProviderParameterGroup",
+        "implementation": "org.onap.policy.models.provider.impl.DatabasePolicyModelsProviderImpl",
+        "databaseDriver": "org.h2.Driver",
+        "databaseUrl": "jdbc:h2:mem:testdb",
+        "databaseUser": "policy",
+        "databasePassword": "P01icY",
+        "persistenceUnit": "ToscaConceptTest"
+    },
+    "topicParameterGroup": {
+        "topicSources": [
+            {
+                "topic": "POLICY-CLRUNTIME-PARTICIPANT",
+                "servers": [
+                    "localhost"
+                ],
+                "topicCommInfrastructure": "dmaap",
+                "fetchTimeout": 15000
+            }
+        ],
+        "topicSinks": [
+            {
+                "topic": "POLICY-CLRUNTIME-PARTICIPANT",
+                "servers": [
+                    "localhost"
+                ],
+                "topicCommInfrastructure": "dmaap"
+            },
+            {
+                "topic": "POLICY-NOTIFICATION",
+                "servers": [
+                    "localhost"
+                ],
+                "topicCommInfrastructure": "dmaap"
+            }
+        ]
+    },
+    "healthCheckRestClientParameters": [
+        {
+            "clientName": "api",
+            "hostname": "policy-api",
+            "port": 6969,
+            "userName": "healthcheck",
+            "password": "zb!XztG34",
+            "useHttps": true,
+            "basePath": "policy/api/v1/healthcheck"
+        },
+        {
+            "clientName": "distribution",
+            "hostname": "policy-distribution",
+            "port": 6969,
+            "userName": "healthcheck",
+            "password": "zb!XztG34",
+            "useHttps": true,
+            "basePath": "healthcheck"
+        }
+    ]
+}
+
+
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/logback-test.xml b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/logback-test.xml
new file mode 100644
index 000000000..54b578653
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/parameters/logback-test.xml
@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ============LICENSE_START=======================================================
+   Copyright (C) 2021 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>
+
+    <contextName>Participant</contextName>
+    <statusListener class="ch.qos.logback.core.status.OnConsoleStatusListener" />
+    <property name="LOG_DIR" value="${java.io.tmpdir}/clamp_logging/" />
+
+    <!-- USE FOR STD OUT ONLY -->
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <Pattern>%d %level  %msg%n</Pattern>
+        </encoder>
+    </appender>
+
+    <root level="info">
+        <appender-ref ref="STDOUT" />
+    </root>
+
+    <logger name="org.onap.policy.clamp.controlloop.participant" level="trace" additivity="false">
+        <appender-ref ref="STDOUT" />
+    </logger>
+</configuration>
diff --git a/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/rest/servicetemplates/pm_control_loop_tosca.yaml b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/rest/servicetemplates/pm_control_loop_tosca.yaml
new file mode 100644
index 000000000..01f825fc9
--- /dev/null
+++ b/tosca-controlloop/participant/participant-impl/participant-impl-simulator/src/test/resources/rest/servicetemplates/pm_control_loop_tosca.yaml
@@ -0,0 +1,452 @@
+tosca_definitions_version: tosca_simple_yaml_1_3
+capability_types:
+  org.onap.EventProducer:
+    properties:
+      carrier_protocol_type:
+        type: string
+        required: true
+        constraints:
+        - valid_values:
+          - DMAAP_message_router
+          - SOMETHING_ELSE
+          - REST
+      data_format:
+        type: string
+        required: true
+        constraints:
+        - valid_values:
+          - JSON
+          - YAML
+          - JMS
+      event_format:
+        type: string
+        required: true
+      event_format_version:
+        type: string
+        required: false
+      config_keys:
+        type: list
+        required: false
+        entry_schema:
+          type: string
+          constraints:
+          - valid_values:
+            - all valid values should be added here
+            - if not specified, events of any config key may be generated
+            - 'examples for config_key: ves-measurement, ves-syslog, tca_handle_out,
+              etc.'
+    version: 0.0.1
+    derived_from: tosca.capabilities.Root
+  org.onap.EventConsumer:
+    properties:
+      responding_capability:
+        type: string
+        required: false
+      carrier_protocol_type:
+        type: string
+        required: true
+        constraints:
+        - valid_values:
+          - DMAAP_message_router
+          - SOMETHING_ELSE
+          - REST
+      data_format:
+        type: string
+        required: true
+        constraints:
+        - valid_values:
+          - JSON
+          - YAML
+          - JMS
+          - all valid values should be added here
+      event_format:
+        type: string
+        description: 'examples for event_format: Ves_specification, LinkUp, VnfConfigured,
+          etc.'
+        required: true
+      event_format_version:
+        type: string
+        description: 'examples for event_format_version: 5.28.4, 7.30.1, etc.'
+        required: false
+      config_keys:
+        type: list
+        required: false
+        entry_schema:
+          type: string
+          constraints:
+          - valid_values:
+            - all valid values should be added here
+            - if not specified, events of any config key may be generated
+            - 'examples for config_key: ves-measurement, ves-syslog, tca_handle_out,
+              etc.'
+    version: 0.0.1
+    derived_from: tosca.capabilities.Root
+node_types:
+  org.onap.DynamicConfig:
+    properties:
+      application_name:
+        type: string
+        description: Value used to tie the config to an application ? should we be
+          using a relationship here instead?
+        required: true
+      application_version:
+        type: string
+        required: true
+      application_provider:
+        type: string
+        required: false
+      data_types:
+        type: object
+        required: false
+      schema:
+        type: object
+        required: false
+    version: 0.0.1
+    derived_from: tosca.nodes.Root
+  org.onap.APP:
+    properties:
+      application_name:
+        type: string
+        description: Human readable name for the application Product
+        required: false
+      provider:
+        type: string
+        description: Provider of the application and of the descriptor
+        required: true
+      application_version:
+        type: string
+        description: Software version of the application
+        required: true
+      blueprint_id:
+        type: string
+        description: A reference to the app blueprint
+        required: false
+      monitoring_policy:
+        type: string
+        description: A reference to the monitoring policy
+        required: false
+    requirements:
+    - receive:
+        capability: org.onap.EventProducer
+        relationship: org.onap.PropagateEvent
+        occurrences:
+        - 0.0
+        - UNBOUNDED
+        version: 0.0.0
+    - send:
+        capability: org.onap.EventConsumer
+        relationship: org.onap.PropagateEvent
+        occurrences:
+        - 0.0
+        - UNBOUNDED
+        version: 0.0.0
+    version: 0.0.1
+    derived_from: tosca.nodes.Root
+  org.onap.EventRelay:
+    properties:
+      event_format:
+        type: string
+        description: 'examples for event_format: Ves_specification, etc.'
+        required: true
+      event_format_version:
+        type: string
+        description: 'examples for event_format_version: 5.28.4, 7.30.1, etc.'
+        required: true
+      config_keys:
+        type: list
+        required: false
+        entry_schema:
+          type: string
+          constraints:
+          - valid_values:
+            - all valid values should be added here
+            - if not specified, events of any config key is relayed
+            - 'examples for config_key: ves-measurement, ves-syslog, tca_handle_out,
+              etc.'
+      supported_carrier_protocols:
+        type: map
+        description: 'A map describing supported carrier protocols and translations.
+          The tuples define what protocol combinations are supported on the producer
+          and consumer side: e.g. { REST: REST, DMAAP: REST, DMAAP: DMAAP}'
+        required: true
+        key_schema:
+          type: string
+          constraints:
+          - valid_values:
+            - DMAAP_message_router
+            - SOMETHING_ELSE
+            - REST
+            - all valid values should be added here
+        entry_schema:
+          type: string
+          constraints:
+          - valid_values:
+            - DMAAP_message_router
+            - SOMETHING_ELSE
+            - REST
+            - all valid values should be added here
+      supported_data_formats:
+        type: map
+        description: 'Is a map describing supported data formats and translation.
+          The tuples define what protocol combinations are supported on the producer
+          and consumer side: e.g. { JSON: JSON, JMS: JSON, YAML:YAML }'
+        required: true
+        key_schema:
+          type: string
+          constraints:
+          - valid_values:
+            - JSON
+            - JMS
+            - YAML
+            - etc
+            - all valid values should be added here
+        entry_schema:
+          type: string
+          constraints:
+          - valid_values:
+            - JSON
+            - JMS
+            - YAML
+            - etc
+            - all valid values should be added here
+    requirements:
+    - receive:
+        capability: org.onap.EventProducer
+        relationship: org.onap.PropagateEvent
+        occurrences:
+        - 0.0
+        - UNBOUNDED
+        version: 0.0.0
+    - send:
+        capability: org.onap.EventConsumer
+        relationship: org.onap.PropagateEvent
+        occurrences:
+        - 0.0
+        - UNBOUNDED
+        version: 0.0.0
+    version: 0.0.1
+    derived_from: tosca.nodes.Root
+relationship_types:
+  org.onap.PropagateEvent:
+    properties:
+      config_keys:
+        type: list
+        description: The relationship type used on requirements to org.onap.EventProducer
+          and org.onap.EventConsumer capabilities. Filters events by specific config_keys
+          to be transferred by this relationship. That is, any event with a specific
+          config_key found in the list is transferred. If list is not defined or is
+          empty, events with all config_keys are transferred.
+        required: false
+        entry_schema:
+          type: string
+    version: 0.0.1
+    derived_from: tosca.relationships.Root
+topology_template:
+  inputs:
+    pm_subscription_topic:
+      type: string
+    pm_subscription_response_topic:
+      type: string
+    pm_subscription_handler_blueprint_id:
+      type: string
+    pm_subscription_operational_policy_id:
+      type: string
+    pm_subscription_cds_blueprint_id:
+      type: string
+    enable_tls:
+      type: string
+  node_templates:
+    org.onap.PM_Subscription_Handler:
+      type: org.onap.APP
+      properties:
+        application_name: PM Subscription Handler
+        provider: Ericsson
+        application_version: 1.0.0
+        artifact_id:
+          get_input: pm_subscription_handler_blueprint_id
+          description: Is this a reference to the DCAE Cloudify Blueprint that is
+            already stored(or will be stored before CL configuration & instatiation)
+            in DCAE Inventory?
+        artifact_config:
+          enable_tls:
+            get_input: enable_tls
+          pmsh_publish_topic_name:
+            get_input: pm_subscription_topic
+      capabilities:
+        pm-subscription-event-publisher:
+          properties:
+            carrier_protocol_type: DMAAP_message_router
+            data_format: JSON
+            event_format: pm-subscription-event-format
+            event_format_version: 1.0.0
+          attributes:
+            type: org.onap.EventProducer
+          occurrences:
+          - 0.0
+          - UNBOUNDED
+          version: 0.0.0
+        pm-subscription-event-receiver:
+          properties:
+            carrier_protocol_type: DMAAP_message_router
+            data_format: JSON
+            event_format: pm-subscription-event-response-format
+            event_format_version: 1.0.0
+            relationships:
+            - type: tosca.relationships.DependsOn
+            - description: any ideas on a better realtionship ? or is it better to
+                just use the root realtionship ?
+            - target: org.onap.PM_Monitoring_Policy
+          attributes:
+            type: org.onap.EventConsumer
+          occurrences:
+          - 0.0
+          - UNBOUNDED
+          version: 0.0.0
+      version: 0.0.0
+    org.onap.PM_Monitoring_Policy:
+      type: org.onap.DynamicConfig
+      properties:
+        application_name: PM Subscription Handler
+        application_version: 1.0.0
+        provider: Ericsson
+        data_types:
+          measurementType:
+            type: string
+          DN:
+            type: string
+          nfFilter:
+            properties:
+              nfNames:
+                type: list
+                entry_schema: string
+              modelInvariantIDs:
+                type: list
+                entry_schema:
+                  type: string
+              modelVersionIDs:
+                type: list
+                entry_schema:
+                  type: string
+          measurementGroup:
+            properties:
+              masurementTypes:
+                type: list
+                entry_schema:
+                  type: measurementType
+              managedObjectDNsBasic:
+                type: list
+                entry_schema:
+                  type: DN
+        schema:
+          subscription:
+            subscriptionName:
+              type: string
+              required: true
+            administrativeState:
+              type: string
+              required: true
+            filebasedGP:
+              type: integer
+              required: true
+            fileLocation:
+              type: string
+              required: true
+            nfFilter:
+              type: nfFilter
+            measurementGroups:
+              type: list
+              entry_schema:
+                type: measurementGroup
+      version: 0.0.0
+      description: Should I be showing a dependency between PM Subscription Handler
+        and the PM Monitoring Policy
+    org.onap.PM_Policy:
+      type: org.onap.APP
+      properties:
+        application_name: PM Subscription Operational Policy
+        provider: Ericsson
+        application_version: 1.0.0
+        artifact_id:
+          get_input: pm_subscription_operational_policy_id
+        artifact_config: NOT_DEFINED
+      requirements:
+      - receive_0:
+          capability: pm-subscription-event-publisher
+          node: org.onap.PM_Subscription_Handler
+          relationship: NOT_DEFINED
+          properties:
+            config_keys:
+            - topic_name:
+                get_input: pm_subscription_topic
+          version: 0.0.0
+      - send_0:
+          capability: cds-rest-receive
+          node: org.onap.CDS
+          version: 0.0.0
+      - receive_1:
+          capability: cds-rest-response
+          node: org.onap.CDS
+          version: 0.0.0
+      - send_1:
+          capability: pm-subscription-event-receiver
+          node: org.onap.PM_Subscription_Handler
+          relationship: NOT_DEFINED
+          properties:
+            config_keys:
+            - topic_name:
+                get_input: pm_subscription_response_topic
+          version: 0.0.0
+      capabilities:
+        pm-subscription-response-event-publisher:
+          properties:
+            type: org.onap.EventProducer
+            carrier_protocol_type: DMAAP_message_router
+            data_format: JSON
+            event_format: pm-subscription-event-response-format
+            event_format_version: 1.0.0
+          occurrences:
+          - 0.0
+          - UNBOUNDED
+          version: 0.0.0
+      version: 0.0.0
+    org.onap.PM_CDS_Blueprint:
+      type: org.onap.APP
+      properties:
+        application_name: PM Subscription CDS Blueprint
+        provider: Ericsson
+        application_version: 1.0.0
+        artifact_id:
+          get_input: pm_subscription_cds_blueprint_id
+      capabilities:
+        cds-rest-receive:
+          properties:
+            type: org.onap.EventConsumer
+            protocol_type: REST
+            data_format: JSON
+            event_format: cds_action_format
+            event_format_version: 1.0.0
+            responding_capability: cds-rest-response
+          occurrences:
+          - 0.0
+          - UNBOUNDED
+          version: 0.0.0
+        cds-rest-response:
+          properties:
+            type: org.onap.EventProducer
+            protocol_type: REST
+            data_format: JSON
+            event_format: cds_action_response_format
+            event_format_version: 1.0.0
+          occurrences:
+          - 0.0
+          version: 0.0.0
+      version: 0.0.0
+    org.onap.controlloop0:
+      type: org.onap.APP
+      properties:
+        application_name: Test Control Loop
+        provider: Ericsson
+        application_version: 1.0.0
+        status: NOT_DEPLOYED
+      version: 0.0.0
+version: 0.0.0
diff --git a/tosca-controlloop/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/parameters/ParticipantIntermediaryParameters.java b/tosca-controlloop/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/parameters/ParticipantIntermediaryParameters.java
new file mode 100644
index 000000000..8e3440e42
--- /dev/null
+++ b/tosca-controlloop/participant/participant-intermediary/src/main/java/org/onap/policy/clamp/controlloop/participant/intermediary/parameters/ParticipantIntermediaryParameters.java
@@ -0,0 +1,58 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 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.clamp.controlloop.participant.intermediary.parameters;
+
+import lombok.Getter;
+import org.onap.policy.common.endpoints.parameters.TopicParameterGroup;
+import org.onap.policy.common.parameters.ParameterGroupImpl;
+import org.onap.policy.common.parameters.annotations.NotBlank;
+import org.onap.policy.common.parameters.annotations.NotNull;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaConceptIdentifier;
+
+/**
+ * Class to hold all parameters needed for participant component.
+ */
+@NotNull
+@NotBlank
+@Getter
+public class ParticipantIntermediaryParameters extends ParameterGroupImpl {
+    // The ID and description of this participant
+    private ToscaConceptIdentifier participantId;
+    private String description;
+
+    // The participant type of this participant
+    private ToscaConceptIdentifier participantType;
+
+    // The time interval for periodic reporting of status to the CLAMP control loop server
+    private long reportingTimeInterval;
+
+    // DMaaP topics for communicating with the CLAMP control loop server
+    private TopicParameterGroup clampControlLoopTopics;
+
+    /**
+     * Create the participant parameter group.
+     *
+     * @param instanceId instance id of the event.
+     */
+    public ParticipantIntermediaryParameters(final String instanceId) {
+        super(instanceId);
+    }
+}