Transfer tosca-poc onto master

This is the third if three commits, this commit makes the content of
the master branch the same as the tosca-poc branch.

This commit adds the "src" files for TOSCA control loops to the modules
in master.

Difference between this commit and the current master:
------------------------------------------------------
diff -qr clamp clamp-master |diff_filter.sh
Only in clamp/common: src
Only in clamp/models: src
Files clamp/participant/participant-impl/participant-impl-dcae/pom.xml and clamp-master/participant/participant-impl/participant-impl-dcae/pom.xml differ
Only in clamp/participant/participant-impl/participant-impl-dcae: src
Only in clamp/participant/participant-impl/participant-impl-policy: src
Only in clamp/participant/participant-impl/participant-impl-simulator: src
Files clamp/participant/participant-impl/pom.xml and clamp-master/participant/participant-impl/pom.xml differ
Only in clamp/participant/participant-intermediary: src
Files clamp/participant/pom.xml and clamp-master/participant/pom.xml differ
Files clamp/pom.xml and clamp-master/pom.xml differ
Files clamp/runtime/pom.xml and clamp-master/runtime/pom.xml differ
Only in clamp: runtime-controlloop

Difference between this commit and the current tosca-poc branch:
----------------------------------------------------------------
diff -qr clamp clamp-tp |diff_filter.sh
Files clamp/INFO.yaml and clamp-tp/INFO.yaml differ
Only in clamp/releases: 6.0.1-container.yaml
Only in clamp/releases: 6.0.1.yaml
Only in clamp/releases: 6.0.2-container.yaml
Only in clamp/releases: 6.0.2.yaml
Only in clamp/releases: 6.1.0-container.yaml
Only in clamp/releases: 6.1.0.yaml
Only in clamp/releases: 6.1.1-container.yaml
Only in clamp/releases: 6.1.1.yaml
Files clamp/runtime/src/main/resources/META-INF/resources/swagger.html and clamp-tp/runtime/src/main/resources/META-INF/resources/swagger.html differ

Issue-ID: POLICY-3215
Change-Id: Ica1aa3fe5d6110df2396ea856703102e800fa770
Signed-off-by: liamfallon <liam.fallon@est.tech>

11 files changed, 901 insertions, 0 deletions

diff --git a/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/handler/ControlLoopElementHandler.java b/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/handler/ControlLoopElementHandler.java
new file mode 100644
index 000000000..932ebbece
--- /dev/null
+++ b/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/handler/ControlLoopElementHandler.java
@@ -0,0 +1,159 @@
+/*-
+ * ============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.policy.main.handler;
+
+import java.time.Instant;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.UUID;
+import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ClElementStatistics;
+import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopElement;
+import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopOrderedState;
+import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopState;
+import org.onap.policy.clamp.controlloop.participant.intermediary.api.ControlLoopElementListener;
+import org.onap.policy.models.base.PfModelException;
+import org.onap.policy.models.base.PfModelRuntimeException;
+import org.onap.policy.models.provider.PolicyModelsProvider;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicyType;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaServiceTemplate;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * This class handles implementation of controlLoopElement updates.
+ */
+public class ControlLoopElementHandler implements ControlLoopElementListener {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(ControlLoopElementHandler.class);
+    private static final Map<String, String> policyTypeMap = new LinkedHashMap<>();
+    private static final Map<String, String> policyMap = new LinkedHashMap<>();
+
+    /**
+     * Callback method to handle a control loop element state change.
+     *
+     * @param controlLoopElementId the ID of the control loop element
+     * @param currentState the current state of the control loop element
+     * @param newState the state to which the control loop element is changing to
+     * @throws PfModelException in case of an exception
+    */
+    @Override
+    public void controlLoopElementStateChange(UUID controlLoopElementId,
+            ControlLoopState currentState,
+            ControlLoopOrderedState newState) throws PfModelException {
+        PolicyProvider policyProvider = PolicyHandler.getInstance().getPolicyProvider();
+        switch (newState) {
+            case UNINITIALISED:
+                try {
+                    deletePolicyData(controlLoopElementId, newState);
+                } catch (PfModelRuntimeException e) {
+                    LOGGER.debug("Delete policytpes failed", e);
+                }
+                break;
+            case PASSIVE:
+                policyProvider.getIntermediaryApi()
+                    .updateControlLoopElementState(controlLoopElementId, newState,
+                            ControlLoopState.PASSIVE);
+                break;
+            case RUNNING:
+                policyProvider.getIntermediaryApi()
+                    .updateControlLoopElementState(controlLoopElementId, newState,
+                            ControlLoopState.RUNNING);
+                break;
+            default:
+                LOGGER.debug("Unknown orderedstate {}", newState);
+                break;
+        }
+    }
+
+    private void deletePolicyData(UUID controlLoopElementId,
+            ControlLoopOrderedState newState) throws PfModelException {
+        PolicyModelsProvider dbProvider = PolicyHandler.getInstance().getDatabaseProvider();
+        PolicyProvider policyProvider = PolicyHandler.getInstance().getPolicyProvider();
+        if (policyMap != null) {
+            // Delete all policies of this controlLoop from policy framework
+            for (Entry<String, String> policy : policyMap.entrySet()) {
+                dbProvider.deletePolicy(policy.getKey(), policy.getValue());
+            }
+        }
+        if (policyTypeMap != null) {
+            // Delete all policy types of this control loop from policy framework
+            for (Entry<String, String> policy : policyTypeMap.entrySet()) {
+                dbProvider.deletePolicyType(policy.getKey(), policy.getValue());
+            }
+        }
+        policyProvider.getIntermediaryApi()
+            .updateControlLoopElementState(controlLoopElementId, newState,
+                    ControlLoopState.UNINITIALISED);
+    }
+
+    /**
+     * Callback method to handle an update on a control loop element.
+     *
+     * @param element the information on the control loop element
+     * @param controlLoopDefinition toscaServiceTemplate
+     * @throws PfModelException in case of an exception
+     */
+    @Override
+    public void controlLoopElementUpdate(ControlLoopElement element,
+            ToscaServiceTemplate controlLoopDefinition) throws PfModelException {
+        PolicyModelsProvider dbProvider = PolicyHandler.getInstance().getDatabaseProvider();
+        PolicyProvider policyProvider = PolicyHandler.getInstance().getPolicyProvider();
+
+        policyProvider.getIntermediaryApi()
+            .updateControlLoopElementState(element.getId(), element.getOrderedState(), ControlLoopState.PASSIVE);
+        if (controlLoopDefinition.getPolicyTypes() != null) {
+            for (ToscaPolicyType policyType : controlLoopDefinition.getPolicyTypes().values()) {
+                policyTypeMap.put(policyType.getName(), policyType.getVersion());
+            }
+            dbProvider.createPolicyTypes(controlLoopDefinition);
+        }
+        if (controlLoopDefinition.getToscaTopologyTemplate().getPolicies() != null) {
+            for (Map<String, ToscaPolicy> foundPolicyMap : controlLoopDefinition
+                            .getToscaTopologyTemplate().getPolicies()) {
+                for (ToscaPolicy policy : foundPolicyMap.values()) {
+                    policyMap.put(policy.getName(), policy.getVersion());
+                }
+            }
+            dbProvider.createPolicies(controlLoopDefinition);
+        }
+    }
+
+    /**
+     * Handle controlLoopElement statistics.
+     *
+     * @param controlLoopElementId controlloop element id
+     */
+    @Override
+    public void handleStatistics(UUID controlLoopElementId) {
+        PolicyProvider policyProvider = PolicyHandler.getInstance().getPolicyProvider();
+        ControlLoopElement clElement = policyProvider.getIntermediaryApi()
+               .getControlLoopElement(controlLoopElementId);
+        if (clElement != null) {
+            ClElementStatistics clElementStatistics = new ClElementStatistics();
+            clElementStatistics.setControlLoopState(clElement.getState());
+            clElementStatistics.setTimeStamp(Instant.now());
+            policyProvider.getIntermediaryApi()
+                .updateControlLoopElementStatistics(controlLoopElementId, clElementStatistics);
+        }
+    }
+}
diff --git a/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/handler/PolicyHandler.java b/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/handler/PolicyHandler.java
new file mode 100644
index 000000000..d62e5f9f3
--- /dev/null
+++ b/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/handler/PolicyHandler.java
@@ -0,0 +1,100 @@
+/*-
+ * ============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.policy.main.handler;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Set;
+import javax.ws.rs.core.Response;
+import lombok.Getter;
+import org.onap.policy.clamp.controlloop.common.handler.ControlLoopHandler;
+import org.onap.policy.clamp.controlloop.participant.intermediary.parameters.ParticipantIntermediaryParameters;
+import org.onap.policy.clamp.controlloop.participant.policy.main.parameters.ParticipantPolicyParameters;
+import org.onap.policy.common.endpoints.event.comm.TopicSink;
+import org.onap.policy.common.endpoints.listeners.MessageTypeDispatcher;
+import org.onap.policy.common.utils.services.Registry;
+import org.onap.policy.models.base.PfModelException;
+import org.onap.policy.models.base.PfModelRuntimeException;
+import org.onap.policy.models.provider.PolicyModelsProvider;
+import org.onap.policy.models.provider.PolicyModelsProviderFactory;
+
+/**
+ * This class handles policy participant and control loop elements.
+ *
+ * <p/>It is effectively a singleton that is started at system start.
+ */
+public class PolicyHandler extends ControlLoopHandler {
+
+    private final ParticipantIntermediaryParameters participantParameters;
+    private final ParticipantPolicyParameters policyParameters;
+
+    @Getter
+    private PolicyProvider policyProvider;
+    @Getter
+    private PolicyModelsProvider databaseProvider;
+
+    /**
+     * Create a handler.
+     *
+     * @param parameters the parameters for access to the database
+     * @throws PfModelException in case of an exception
+     */
+    public PolicyHandler(ParticipantPolicyParameters parameters) throws PfModelException {
+        super(parameters.getDatabaseProviderParameters());
+        participantParameters = parameters.getIntermediaryParameters();
+        policyParameters = parameters;
+    }
+
+    public static PolicyHandler getInstance() {
+        return Registry.get(PolicyHandler.class.getName());
+    }
+
+    @Override
+    public Set<Class<?>> getProviderClasses() {
+        return null;
+    }
+
+    @Override
+    public void startProviders() {
+        try {
+            policyProvider = new PolicyProvider(participantParameters);
+            databaseProvider = new PolicyModelsProviderFactory().createPolicyModelsProvider(
+                                         policyParameters.getDatabaseProviderParameters());
+        } catch (PfModelException e) {
+            throw new PfModelRuntimeException(Response.Status.INTERNAL_SERVER_ERROR, "Start providers failed ", e);
+        }
+    }
+
+    @Override
+    public void stopProviders() {
+        try {
+            policyProvider.close();
+        } catch (IOException e) {
+            throw new PfModelRuntimeException(Response.Status.INTERNAL_SERVER_ERROR, "Stop providers failed ", e);
+        }
+
+        try {
+            databaseProvider.close();
+        } catch (PfModelException e) {
+            throw new PfModelRuntimeException(Response.Status.INTERNAL_SERVER_ERROR, "Stop providers failed ", e);
+        }
+    }
+}
diff --git a/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/handler/PolicyProvider.java b/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/handler/PolicyProvider.java
new file mode 100644
index 000000000..420c77ee3
--- /dev/null
+++ b/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/handler/PolicyProvider.java
@@ -0,0 +1,57 @@
+/*-
+ * ============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.policy.main.handler;
+
+import java.io.Closeable;
+import java.io.IOException;
+import lombok.Getter;
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopRuntimeException;
+import org.onap.policy.clamp.controlloop.participant.intermediary.api.ParticipantIntermediaryApi;
+import org.onap.policy.clamp.controlloop.participant.intermediary.api.ParticipantIntermediaryFactory;
+import org.onap.policy.clamp.controlloop.participant.intermediary.parameters.ParticipantIntermediaryParameters;
+
+/**
+ * Provider class for policy participant.
+ */
+public class PolicyProvider implements Closeable {
+    @Getter
+    private final ParticipantIntermediaryApi intermediaryApi;
+
+    private final ControlLoopElementHandler controlLoopElementHandler;
+
+    /**
+     * Create a policy participant provider.
+     *
+     * @throws ControlLoopRuntimeException on errors creating the provider
+     */
+    public PolicyProvider(ParticipantIntermediaryParameters participantParameters)
+                     throws ControlLoopRuntimeException {
+        intermediaryApi = new ParticipantIntermediaryFactory().createApiImplementation();
+        intermediaryApi.init(participantParameters);
+        controlLoopElementHandler = new ControlLoopElementHandler();
+        intermediaryApi.registerControlLoopElementListener(controlLoopElementHandler);
+    }
+
+    @Override
+    public void close() throws IOException {
+        intermediaryApi.close();
+    }
+}
diff --git a/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/parameters/ParticipantPolicyParameterHandler.java b/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/parameters/ParticipantPolicyParameterHandler.java
new file mode 100644
index 000000000..98cea821a
--- /dev/null
+++ b/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/parameters/ParticipantPolicyParameterHandler.java
@@ -0,0 +1,79 @@
+/*-
+ * ============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.policy.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.policy.main.startstop.ParticipantPolicyCommandLineArguments;
+import org.onap.policy.common.parameters.ValidationResult;
+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 policy participant parameters from JSON files.
+ */
+public class ParticipantPolicyParameterHandler {
+
+    private static final Coder CODER = new StandardCoder();
+
+    /**
+     * Read the parameters from the parameter file.
+     *
+     * @param arguments the arguments passed to policy
+     * @return the parameters read from the configuration file
+     * @throws ControlLoopException on parameter exceptions
+     */
+    public ParticipantPolicyParameters getParameters(final ParticipantPolicyCommandLineArguments arguments)
+            throws ControlLoopException {
+        ParticipantPolicyParameters parameters = null;
+
+        // Read the parameters
+        try {
+            // Read the parameters from JSON
+            File file = new File(arguments.getFullConfigurationFilePath());
+            parameters = CODER.decode(file, ParticipantPolicyParameters.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 ValidationResult 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/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/parameters/ParticipantPolicyParameters.java b/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/parameters/ParticipantPolicyParameters.java
new file mode 100644
index 000000000..13d89faba
--- /dev/null
+++ b/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/parameters/ParticipantPolicyParameters.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.policy.main.parameters;
+
+import javax.validation.constraints.NotBlank;
+import lombok.Getter;
+import org.onap.policy.clamp.controlloop.participant.intermediary.parameters.ParticipantIntermediaryParameters;
+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 policy participant.
+ *
+ */
+@NotNull
+@NotBlank
+@Getter
+public class ParticipantPolicyParameters extends ParameterGroupImpl {
+    private ParticipantIntermediaryParameters intermediaryParameters;
+    private PolicyModelsProviderParameters databaseProviderParameters;
+
+    /**
+     * Create the policy participant parameter group.
+     *
+     * @param name the parameter group name
+     */
+    public ParticipantPolicyParameters(final String name) {
+        super(name);
+    }
+}
diff --git a/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/startstop/Main.java b/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/startstop/Main.java
new file mode 100644
index 000000000..9a6bfdf7d
--- /dev/null
+++ b/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/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.policy.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.policy.main.parameters.ParticipantPolicyParameterHandler;
+import org.onap.policy.clamp.controlloop.participant.policy.main.parameters.ParticipantPolicyParameters;
+import org.onap.policy.common.utils.resources.MessageConstants;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * This class initiates Policy Participant.
+ */
+public class Main {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(Main.class);
+
+    private ParticipantPolicyActivator activator;
+
+    @Getter
+    private ParticipantPolicyParameters parameterGroup;
+
+    /**
+     * Instantiates policy participant.
+     *
+     * @param args the command line arguments
+     */
+    public Main(final String[] args) {
+        final String argumentString = Arrays.toString(args);
+        LOGGER.info("Starting the control loop participant service with arguments - {}", argumentString);
+
+        // Check the arguments
+        final ParticipantPolicyCommandLineArguments arguments = new ParticipantPolicyCommandLineArguments();
+        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 ParticipantPolicyParameterHandler().getParameters(arguments);
+
+            // Now, create the activator for the service
+            activator = new ParticipantPolicyActivator(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 ClRuntimeShutdownHookClass());
+        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 ClRuntimeShutdownHookClass terminates the policy participant
+     * when its run method is called.
+     */
+    private class ClRuntimeShutdownHookClass extends Thread {
+        /*
+         * (non-Javadoc)
+         *
+         * @see java.lang.Runnable#run()
+         */
+        @Override
+        public void run() {
+            try {
+                // Shutdown the control loop participant service and wait for everything to stop
+                shutdown();
+            } catch (final RuntimeException | ControlLoopException e) {
+                LOGGER.warn("error occured during shut down of the policy participant", 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/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/startstop/ParticipantPolicyActivator.java b/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/startstop/ParticipantPolicyActivator.java
new file mode 100644
index 000000000..760f8267d
--- /dev/null
+++ b/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/startstop/ParticipantPolicyActivator.java
@@ -0,0 +1,57 @@
+/*-
+ * ============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.policy.main.startstop;
+
+import java.util.concurrent.atomic.AtomicReference;
+import lombok.Getter;
+import org.onap.policy.clamp.controlloop.participant.policy.main.handler.PolicyHandler;
+import org.onap.policy.clamp.controlloop.participant.policy.main.parameters.ParticipantPolicyParameters;
+import org.onap.policy.common.utils.services.ServiceManagerContainer;
+
+/**
+ * This class activates the policy participant.
+ *
+ */
+public class ParticipantPolicyActivator extends ServiceManagerContainer {
+    @Getter
+    private final ParticipantPolicyParameters parameters;
+
+    /**
+     * Instantiate the activator for the policy participant.
+     *
+     * @param parameters the parameters for the policy participant
+     */
+    public ParticipantPolicyActivator(final ParticipantPolicyParameters parameters) {
+        this.parameters = parameters;
+
+        final AtomicReference<PolicyHandler> policyHandler = new AtomicReference<>();
+
+        // @formatter:off
+        addAction("Policy Handler",
+            () -> policyHandler.set(new PolicyHandler(parameters)),
+            () -> policyHandler.get().close());
+
+        addAction("Policy Providers",
+            () -> policyHandler.get().startProviders(),
+            () -> policyHandler.get().stopProviders());
+        // @formatter:on
+    }
+}
diff --git a/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/startstop/ParticipantPolicyCommandLineArguments.java b/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/startstop/ParticipantPolicyCommandLineArguments.java
new file mode 100644
index 000000000..af7a189f6
--- /dev/null
+++ b/participant/participant-impl/participant-impl-policy/src/main/java/org/onap/policy/clamp/controlloop/participant/policy/main/startstop/ParticipantPolicyCommandLineArguments.java
@@ -0,0 +1,145 @@
+/*-
+ * ============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.policy.main.startstop;
+
+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.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.clamp.controlloop.common.startstop.CommonCommandLineArguments;
+import org.onap.policy.common.utils.resources.ResourceUtils;
+
+/**
+ * This class reads and handles command line parameters for the policy participant.
+ *
+ */
+public class ParticipantPolicyCommandLineArguments {
+    private static final String FILE_MESSAGE_PREAMBLE = " file \"";
+    private static final int HELP_LINE_LENGTH = 120;
+
+    private final Options options;
+    private final CommonCommandLineArguments commonCommandLineArguments;
+
+    @Getter()
+    @Setter()
+    private String configurationFilePath = null;
+
+    /**
+     * Construct the options for the policy participant.
+     */
+    public ParticipantPolicyCommandLineArguments() {
+        options = new Options();
+        commonCommandLineArguments = new CommonCommandLineArguments(options);
+    }
+
+    /**
+     * Construct the options for the CLI editor and parse in the given arguments.
+     *
+     * @param args The command line arguments
+     */
+    public ParticipantPolicyCommandLineArguments(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 policy 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 commonCommandLineArguments.help(Main.class.getName(), options);
+        }
+
+        if (commandLine.hasOption('v')) {
+            return commonCommandLineArguments.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 {
+        commonCommandLineArguments.validate(configurationFilePath);
+    }
+
+    /**
+     * 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);
+    }
+}
diff --git a/participant/participant-impl/participant-impl-policy/src/main/resources/META-INF/persistence.xml b/participant/participant-impl/participant-impl-policy/src/main/resources/META-INF/persistence.xml
new file mode 100644
index 000000000..46db712b6
--- /dev/null
+++ b/participant/participant-impl/participant-impl-policy/src/main/resources/META-INF/persistence.xml
@@ -0,0 +1,79 @@
+<?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=========================================================
+-->
+<persistence xmlns="http://java.sun.com/xml/ns/persistence" version="2.0">
+    <persistence-unit name="ToscaConceptTest" transaction-type="RESOURCE_LOCAL">
+        <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
+
+        <class>org.onap.policy.models.base.PfConceptKey</class>
+        <class>org.onap.policy.models.dao.converters.CDataConditioner</class>
+        <class>org.onap.policy.models.dao.converters.Uuid2String</class>
+        <class>org.onap.policy.models.pdp.persistence.concepts.JpaPdp</class>
+        <class>org.onap.policy.models.pdp.persistence.concepts.JpaPdpGroup</class>
+        <class>org.onap.policy.models.pdp.persistence.concepts.JpaPdpStatistics</class>
+        <class>org.onap.policy.models.pdp.persistence.concepts.JpaPdpSubGroup</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaCapabilityAssignment</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaCapabilityAssignments</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaCapabilityType</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaCapabilityTypes</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaDataType</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaDataTypes</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaNodeTemplate</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaNodeTemplates</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaNodeType</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaNodeTypes</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaParameter</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaPolicies</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaPolicy</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaPolicyType</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaPolicyTypes</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaProperty</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaRelationshipType</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaRelationshipTypes</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaRequirement</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaRequirements</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaServiceTemplate</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaTopologyTemplate</class>
+        <class>org.onap.policy.models.tosca.simple.concepts.JpaToscaTrigger</class>
+        <class>org.onap.policy.clamp.controlloop.models.controlloop.persistence.concepts.JpaControlLoop</class>
+        <class>org.onap.policy.clamp.controlloop.models.controlloop.persistence.concepts.JpaControlLoopElement</class>
+        <class>org.onap.policy.clamp.controlloop.models.controlloop.persistence.concepts.JpaParticipant</class>
+        <class>org.onap.policy.clamp.controlloop.models.controlloop.persistence.concepts.JpaParticipantStatistics</class>
+        <class>org.onap.policy.clamp.controlloop.models.controlloop.persistence.concepts.JpaClElementStatistics</class>
+        <properties>
+            <property name="eclipselink.ddl-generation" value="drop-and-create-tables" />
+            <property name="eclipselink.ddl-generation.output-mode" value="database" />
+            <property name="eclipselink.logging.level" value="INFO" />
+
+            <!-- property name="eclipselink.logging.level" value="ALL" />
+            <property name="eclipselink.logging.level.jpa" value="ALL" />
+            <property name="eclipselink.logging.level.ddl" value="ALL" />
+            <property name="eclipselink.logging.level.connection" value="ALL" />
+            <property name="eclipselink.logging.level.sql" value="ALL" />
+            <property name="eclipselink.logging.level.transaction" value="ALL" />
+            <property name="eclipselink.logging.level.sequencing" value="ALL" />
+            <property name="eclipselink.logging.level.server" value="ALL" />
+            <property name="eclipselink.logging.level.query" value="ALL" />
+            <property name="eclipselink.logging.level.properties" value="ALL" /-->
+        </properties>
+        <shared-cache-mode>NONE</shared-cache-mode>
+    </persistence-unit>
+</persistence>
+
diff --git a/participant/participant-impl/participant-impl-policy/src/main/resources/config/PolicyParticipantConfig.json b/participant/participant-impl/participant-impl-policy/src/main/resources/config/PolicyParticipantConfig.json
new file mode 100644
index 000000000..e6b3c8eb1
--- /dev/null
+++ b/participant/participant-impl/participant-impl-policy/src/main/resources/config/PolicyParticipantConfig.json
@@ -0,0 +1,31 @@
+{
+    "name":"ParticipantParameterGroup",
+    "participantStatusParameters":{
+        "timeIntervalMs":10000,
+        "description":"Participant Status",
+        "participantId":{
+            "name": "PolicyParticipant0",
+            "version":"1.0.0"
+        },
+        "participantType":{
+            "name": "org.onap.policy.controlloop.PolicyControlLoopParticipant",
+            "version":"2.3.1"
+        },
+        "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/participant/participant-impl/participant-impl-policy/src/main/resources/version.txt b/participant/participant-impl/participant-impl-policy/src/main/resources/version.txt
new file mode 100644
index 000000000..dbd67585f
--- /dev/null
+++ b/participant/participant-impl/participant-impl-policy/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