Convert DCAE Participant to SpringBoot Application

Issue-ID: POLICY-3244
Change-Id: I64cef98a4b1a405160d533983baf7a860f1816f5
Signed-off-by: FrancescoFioraEst <francesco.fiora@est.tech>

14 files changed, 240 insertions, 741 deletions

diff --git a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/DcaeParticipantApplication.java b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/DcaeParticipantApplication.java
new file mode 100644
index 000000000..25edaf552
--- /dev/null
+++ b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/DcaeParticipantApplication.java
@@ -0,0 +1,41 @@
+/*-

+ * ============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.dcae;

+

+import org.springframework.boot.SpringApplication;

+import org.springframework.boot.autoconfigure.SpringBootApplication;

+import org.springframework.boot.context.properties.ConfigurationPropertiesScan;

+import org.springframework.context.annotation.ComponentScan;

+

+/**

+ * Starter.

+ *

+ */

+@SpringBootApplication

+@ComponentScan({"org.onap.policy.clamp.controlloop.participant.dcae",

+        "org.onap.policy.clamp.controlloop.participant.intermediary"})

+@ConfigurationPropertiesScan("org.onap.policy.clamp.controlloop.participant.dcae.main.parameters")

+public class DcaeParticipantApplication {

+

+    public static void main(String[] args) {

+        SpringApplication.run(DcaeParticipantApplication.class, args);

+    }

+}

diff --git a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/config/ParametersConfig.java b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/config/ParametersConfig.java
new file mode 100644
index 000000000..ee649c993
--- /dev/null
+++ b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/config/ParametersConfig.java
@@ -0,0 +1,40 @@
+/*-
+ * ============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.dcae.config;
+
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopException;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameterHandler;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameters;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class ParametersConfig {
+
+    @Value("${participant.file}")
+    private String file;
+
+    @Bean
+    public ParticipantDcaeParameters participantDcaeParameters() throws ControlLoopException {
+        return new ParticipantDcaeParameterHandler().toParticipantDcaeParameters(file);
+    }
+}
diff --git a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/config/ParticipantConfig.java b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/config/ParticipantConfig.java
new file mode 100644
index 000000000..ff828abab
--- /dev/null
+++ b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/config/ParticipantConfig.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.dcae.config;
+
+import org.onap.policy.clamp.controlloop.participant.dcae.main.handler.ControlLoopElementHandler;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameters;
+import org.onap.policy.clamp.controlloop.participant.intermediary.api.ParticipantIntermediaryApi;
+import org.onap.policy.clamp.controlloop.participant.intermediary.api.ParticipantIntermediaryFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class ParticipantConfig {
+
+    /**
+     * Create ParticipantIntermediaryApi.
+     *
+     * @param parameters the Participant Dcae Parameters
+     * @param clElementHandler the ControlLoop Element Handler
+     * @return ParticipantIntermediaryApi
+     */
+    @Bean
+    public ParticipantIntermediaryApi participantIntermediaryApi(ParticipantDcaeParameters parameters,
+            ControlLoopElementHandler clElementHandler) {
+        ParticipantIntermediaryApi intermediaryApi = new ParticipantIntermediaryFactory().createApiImplementation();
+        intermediaryApi.init(parameters.getIntermediaryParameters());
+        intermediaryApi.registerControlLoopElementListener(clElementHandler);
+        clElementHandler.setIntermediaryApi(intermediaryApi);
+        return intermediaryApi;
+    }
+}
diff --git a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/httpclient/AbstractHttpClient.java b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/httpclient/AbstractHttpClient.java
index b2d0b61d0..e23aaaf23 100644
--- a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/httpclient/AbstractHttpClient.java
+++ b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/httpclient/AbstractHttpClient.java
@@ -22,133 +22,89 @@ package org.onap.policy.clamp.controlloop.participant.dcae.httpclient;
 
 import java.io.Closeable;
 import java.io.IOException;
+import java.util.Collections;
+import javax.ws.rs.client.Entity;
+import javax.ws.rs.core.Response;
 import javax.ws.rs.core.Response.Status;
-import org.apache.http.HttpEntity;
-import org.apache.http.HttpHost;
-import org.apache.http.HttpRequest;
-import org.apache.http.ParseException;
-import org.apache.http.auth.AuthScope;
-import org.apache.http.auth.UsernamePasswordCredentials;
-import org.apache.http.client.AuthCache;
-import org.apache.http.client.CredentialsProvider;
-import org.apache.http.client.methods.CloseableHttpResponse;
-import org.apache.http.client.methods.HttpGet;
-import org.apache.http.client.methods.HttpPost;
-import org.apache.http.client.methods.HttpPut;
-import org.apache.http.client.protocol.HttpClientContext;
-import org.apache.http.conn.ssl.NoopHostnameVerifier;
-import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
-import org.apache.http.conn.ssl.TrustSelfSignedStrategy;
-import org.apache.http.impl.auth.BasicScheme;
-import org.apache.http.impl.client.BasicAuthCache;
-import org.apache.http.impl.client.BasicCredentialsProvider;
-import org.apache.http.impl.client.CloseableHttpClient;
-import org.apache.http.impl.client.HttpClientBuilder;
-import org.apache.http.impl.client.HttpClients;
-import org.apache.http.ssl.SSLContextBuilder;
-import org.apache.http.util.EntityUtils;
 import org.onap.policy.clamp.controlloop.common.exception.ControlLoopRuntimeException;
 import org.onap.policy.clamp.controlloop.participant.dcae.model.Loop;
-import org.onap.policy.common.endpoints.parameters.RestServerParameters;
+import org.onap.policy.common.endpoints.event.comm.bus.internal.BusTopicParams;
+import org.onap.policy.common.endpoints.http.client.HttpClient;
+import org.onap.policy.common.endpoints.http.client.HttpClientFactoryInstance;
 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.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 public abstract class AbstractHttpClient implements Closeable {
 
+    private static final String MSG_REQUEST_FAILED = "request to {} failed";
+
     private static final Logger LOGGER = LoggerFactory.getLogger(AbstractHttpClient.class);
-    private final HttpClientContext localContext;
-    private final CloseableHttpClient httpclient;
-    private final HttpHost target;
+    private final HttpClient httpclient;
     public static final Coder CODER = new StandardCoder();
 
     /**
      * Constructor.
      */
-    protected AbstractHttpClient(RestServerParameters restServerParameters) {
+    protected AbstractHttpClient(BusTopicParams restClientParameters) {
         try {
-            final String scheme = restServerParameters.isHttps() ? "https" : "http";
-            target = new HttpHost(restServerParameters.getHost(), restServerParameters.getPort(), scheme);
-
-            CredentialsProvider credsProvider = new BasicCredentialsProvider();
-            credsProvider.setCredentials(new AuthScope(target.getHostName(), target.getPort()),
-                    new UsernamePasswordCredentials(restServerParameters.getUserName(),
-                            restServerParameters.getPassword()));
-
-            AuthCache authCache = new BasicAuthCache();
-            BasicScheme basicAuth = new BasicScheme();
-            authCache.put(target, basicAuth);
-            localContext = HttpClientContext.create();
-            localContext.setAuthCache(authCache);
-
-            HttpClientBuilder builder = HttpClients.custom().setDefaultCredentialsProvider(credsProvider);
-            if (restServerParameters.isHttps()) {
-                final SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(new SSLContextBuilder()
-                        .loadTrustMaterial(null, new TrustSelfSignedStrategy()).setProtocol("TLSv1.2").build(),
-                        new NoopHostnameVerifier());
-                builder.setSSLSocketFactory(sslsf);
-            }
-            httpclient = builder.build();
-
+            httpclient = HttpClientFactoryInstance.getClientFactory().build(restClientParameters);
         } catch (final Exception e) {
             throw new ControlLoopRuntimeException(Status.INTERNAL_SERVER_ERROR,
-                    restServerParameters.getName() + " Client failed to start", e);
+                    restClientParameters.getClientName() + " Client failed to start", e);
         }
     }
 
-    CloseableHttpResponse execute(HttpRequest request) throws IOException {
-        return httpclient.execute(target, request, localContext);
+    protected boolean executePut(String path, String jsonEntity, int statusCode) {
+        try {
+            Response response = httpclient.put(path, Entity.json(jsonEntity), Collections.emptyMap());
+            return response.getStatus() == statusCode;
+        } catch (Exception e) {
+            LOGGER.error(MSG_REQUEST_FAILED, httpclient.getName(), e);
+            return false;
+        }
     }
 
     protected boolean executePut(String path, int statusCode) {
-        try (CloseableHttpResponse response = execute(new HttpPut(path))) {
-            return response.getStatusLine().getStatusCode() == statusCode;
+        try {
+            Response response = httpclient.put(path, Entity.json(""), Collections.emptyMap());
+            return response.getStatus() == statusCode;
         } catch (Exception e) {
+            LOGGER.error(MSG_REQUEST_FAILED, httpclient.getName(), e);
             return false;
         }
     }
 
     protected Loop executePost(String path, int statusCode) {
-        try (CloseableHttpResponse response = execute(new HttpPost(path))) {
-            if (response.getStatusLine().getStatusCode() != statusCode) {
+        try {
+            Response response = httpclient.post(path, Entity.json(""), Collections.emptyMap());
+            if (response.getStatus() != statusCode) {
                 return null;
             }
-            return entityToMap(response.getEntity());
+            return response.readEntity(Loop.class);
         } catch (Exception e) {
+            LOGGER.error(MSG_REQUEST_FAILED, httpclient.getName(), e);
             return null;
         }
     }
 
     protected Loop executeGet(String path, int statusCode) {
-        try (CloseableHttpResponse response = execute(new HttpGet(path))) {
-            if (response.getStatusLine().getStatusCode() != statusCode) {
+        try {
+            Response response = httpclient.get(path);
+
+            if (response.getStatus() != statusCode) {
                 return null;
             }
-            return entityToMap(response.getEntity());
+            return response.readEntity(Loop.class);
         } catch (Exception e) {
+            LOGGER.error(MSG_REQUEST_FAILED, httpclient.getName(), e);
             return null;
         }
     }
 
-    private Loop entityToMap(HttpEntity httpEntity) {
-        if (httpEntity == null) {
-            return new Loop();
-        }
-        try {
-            return CODER.convert(EntityUtils.toString(httpEntity), Loop.class);
-        } catch (ParseException | IOException e) {
-            LOGGER.error("error reading Entity", e);
-            return new Loop();
-        } catch (CoderException e) {
-            LOGGER.error("cannot convert to Loop Object", e);
-            return new Loop();
-        }
-    }
-
     @Override
     public void close() throws IOException {
-        httpclient.close();
+        httpclient.shutdown();
     }
 }
diff --git a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/httpclient/ClampHttpClient.java b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/httpclient/ClampHttpClient.java
index eb805054d..e928c138f 100644
--- a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/httpclient/ClampHttpClient.java
+++ b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/httpclient/ClampHttpClient.java
@@ -21,19 +21,16 @@
 package org.onap.policy.clamp.controlloop.participant.dcae.httpclient;
 
 import org.apache.http.HttpStatus;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameters;
 import org.onap.policy.clamp.controlloop.participant.dcae.model.ExternalComponent;
 import org.onap.policy.clamp.controlloop.participant.dcae.model.Loop;
-import org.onap.policy.common.endpoints.parameters.RestServerParameters;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
 
+@Component
 public class ClampHttpClient extends AbstractHttpClient {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(ClampHttpClient.class);
-
     private static final String STATUS = "/restservices/clds/v2/loop/getstatus/";
     private static final String CREATE = "/restservices/clds/v2/loop/create/%s?templateName=%s";
-    private static final String UPDATE = "/restservices/clds/v2/loop/updateMicroservicePolicy/";
     private static final String DEPLOY = "/restservices/clds/v2/loop/deploy/";
     private static final String STOP = "/restservices/clds/v2/loop/stop/";
     private static final String DELETE = "/restservices/clds/v2/loop/delete/";
@@ -44,8 +41,8 @@ public class ClampHttpClient extends AbstractHttpClient {
     /**
      * Constructor.
      */
-    public ClampHttpClient(RestServerParameters restServerParameters) {
-        super(restServerParameters);
+    public ClampHttpClient(ParticipantDcaeParameters parameters) {
+        super(parameters.getClampClientParameters());
     }
 
     /**
@@ -60,23 +57,12 @@ public class ClampHttpClient extends AbstractHttpClient {
     }
 
     /**
-     * Update.
-     *
-     * @param loopName the loopName
-     * @param jsonEntity the Json entity
-     * @return true
-     */
-    public boolean update(String loopName, String jsonEntity) {
-        return executePost(UPDATE + loopName, HttpStatus.SC_OK) != null;
-    }
-
-    /**
      * Deploy.
      *
      * @param loopName the loopName
      * @return true
      */
-    public boolean deploy(String loopName) { // DCAE
+    public boolean deploy(String loopName) {
         return executePut(DEPLOY + loopName, HttpStatus.SC_ACCEPTED);
     }
 
diff --git a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/httpclient/ConsulDcaeHttpClient.java b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/httpclient/ConsulDcaeHttpClient.java
index cd84a2feb..4f76e3025 100644
--- a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/httpclient/ConsulDcaeHttpClient.java
+++ b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/httpclient/ConsulDcaeHttpClient.java
@@ -21,26 +21,28 @@
 package org.onap.policy.clamp.controlloop.participant.dcae.httpclient;
 
 import org.apache.http.HttpStatus;
-import org.onap.policy.common.endpoints.parameters.RestServerParameters;
+import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameters;
+import org.springframework.stereotype.Component;
 
+@Component
 public class ConsulDcaeHttpClient extends AbstractHttpClient {
 
-    private static final String DEPLOY = "/v1/kv/dcae-pmsh:policy";
+    private static final String DEPLOY = "/v1/kv/dcae-pmsh:";
 
     /**
-     * constructor.
+     * Constructor.
      */
-    public ConsulDcaeHttpClient(RestServerParameters restServerParameters) {
-        super(restServerParameters);
+    public ConsulDcaeHttpClient(ParticipantDcaeParameters parameters) {
+        super(parameters.getConsulClientParameters());
     }
 
     /**
-     * call consult.
+     * Call consult.
      *
      * @param jsonEntity the Entity
      * @return true
      */
-    public boolean deploy(String jsonEntity) {
-        return executePut(DEPLOY + jsonEntity, HttpStatus.SC_ACCEPTED);
+    public boolean deploy(String name, String jsonEntity) {
+        return executePut(DEPLOY + name, jsonEntity, HttpStatus.SC_OK);
     }
 }
diff --git a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/handler/ControlLoopElementHandler.java b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/handler/ControlLoopElementHandler.java
index 96677f320..76ed1122c 100644
--- a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/handler/ControlLoopElementHandler.java
+++ b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/handler/ControlLoopElementHandler.java
@@ -20,11 +20,10 @@
 
 package org.onap.policy.clamp.controlloop.participant.dcae.main.handler;
 
-import java.io.Closeable;
-import java.io.IOException;
 import java.time.Instant;
 import java.util.UUID;
 import java.util.concurrent.TimeUnit;
+import lombok.Setter;
 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;
@@ -33,23 +32,29 @@ import org.onap.policy.clamp.controlloop.participant.dcae.httpclient.ClampHttpCl
 import org.onap.policy.clamp.controlloop.participant.dcae.httpclient.ConsulDcaeHttpClient;
 import org.onap.policy.clamp.controlloop.participant.dcae.model.Loop;
 import org.onap.policy.clamp.controlloop.participant.intermediary.api.ControlLoopElementListener;
-import org.onap.policy.common.endpoints.parameters.RestServerParameters;
+import org.onap.policy.clamp.controlloop.participant.intermediary.api.ParticipantIntermediaryApi;
 import org.onap.policy.models.base.PfModelException;
 import org.onap.policy.models.tosca.authorative.concepts.ToscaServiceTemplate;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
 
 /**
  * This class handles implementation of controlLoopElement updates.
  */
-public class ControlLoopElementHandler implements ControlLoopElementListener, Closeable {
+@Component
+public class ControlLoopElementHandler implements ControlLoopElementListener {
 
     private static final Logger LOGGER = LoggerFactory.getLogger(ControlLoopElementHandler.class);
     private final ClampHttpClient clampClient;
     private final ConsulDcaeHttpClient consulClient;
 
+    @Setter
+    private ParticipantIntermediaryApi intermediaryApi;
+
     private static final String LOOP = "pmsh_loop";
     private static final String TEMPLATE = "LOOP_TEMPLATE_k8s_pmsh";
+    private static final String POLICY = "policy";
 
     private static final String BLUEPRINT_DEPLOYED = "BLUEPRINT_DEPLOYED";
     private static final String MICROSERVICE_INSTALLED_SUCCESSFULLY = "MICROSERVICE_INSTALLED_SUCCESSFULLY";
@@ -70,9 +75,9 @@ public class ControlLoopElementHandler implements ControlLoopElementListener, Cl
     /**
      * Constructor.
      */
-    public ControlLoopElementHandler(RestServerParameters clampParameters, RestServerParameters consulParameters) {
-        clampClient = new ClampHttpClient(clampParameters);
-        consulClient = new ConsulDcaeHttpClient(consulParameters);
+    public ControlLoopElementHandler(ClampHttpClient clampClient, ConsulDcaeHttpClient consulClient) {
+        this.clampClient = clampClient;
+        this.consulClient = consulClient;
     }
 
     /**
@@ -90,17 +95,15 @@ public class ControlLoopElementHandler implements ControlLoopElementListener, Cl
                 Loop loop = clampClient.getstatus(LOOP);
                 if (loop != null) {
                     clampClient.undeploy(LOOP);
-                    DcaeHandler.getInstance().getDcaeProvider().getIntermediaryApi()
-                        .updateControlLoopElementState(controlLoopElementId, newState, ControlLoopState.UNINITIALISED);
+                    intermediaryApi.updateControlLoopElementState(controlLoopElementId, newState,
+                            ControlLoopState.UNINITIALISED);
                 }
                 break;
             case PASSIVE:
-                DcaeHandler.getInstance().getDcaeProvider().getIntermediaryApi()
-                    .updateControlLoopElementState(controlLoopElementId, newState, ControlLoopState.PASSIVE);
+                intermediaryApi.updateControlLoopElementState(controlLoopElementId, newState, ControlLoopState.PASSIVE);
                 break;
             case RUNNING:
-                DcaeHandler.getInstance().getDcaeProvider().getIntermediaryApi()
-                    .updateControlLoopElementState(controlLoopElementId, newState, ControlLoopState.RUNNING);
+                intermediaryApi.updateControlLoopElementState(controlLoopElementId, newState, ControlLoopState.RUNNING);
                 break;
             default:
                 LOGGER.debug("Unknown orderedstate {}", newState);
@@ -120,7 +123,7 @@ public class ControlLoopElementHandler implements ControlLoopElementListener, Cl
     }
 
     private void deploy() throws PfModelException {
-        if (!consulClient.deploy(BODY_CONSUL)) {
+        if (!consulClient.deploy(POLICY, BODY_CONSUL)) {
             throw new PfModelException(null, "deploy to consul failed");
         }
         if (!clampClient.deploy(LOOP)) {
@@ -145,23 +148,21 @@ public class ControlLoopElementHandler implements ControlLoopElementListener, Cl
                 deploy();
                 boolean deployedFlag = false;
                 for (int i = 0; i < CHECK_COUNT; i++) {
-                    //sleep 10 seconds
+                    // sleep 10 seconds
                     TimeUnit.SECONDS.sleep(CHECK_COUNT);
                     loop = getStatus();
                     String status = ClampHttpClient.getStatusCode(loop);
                     if (MICROSERVICE_INSTALLED_SUCCESSFULLY.equals(status)) {
-                        DcaeHandler.getInstance().getDcaeProvider().getIntermediaryApi()
-                            .updateControlLoopElementState(element.getId(), element.getOrderedState(),
-                                            ControlLoopState.PASSIVE);
+                        intermediaryApi.updateControlLoopElementState(element.getId(), element.getOrderedState(),
+                                ControlLoopState.PASSIVE);
                         deployedFlag = true;
                         break;
                     }
                 }
                 if (!deployedFlag) {
                     LOGGER.warn("DCAE is not deployed properly, ClElement state will be UNINITIALISED2PASSIVE");
-                    DcaeHandler.getInstance().getDcaeProvider().getIntermediaryApi()
-                        .updateControlLoopElementState(element.getId(), element.getOrderedState(),
-                                      ControlLoopState.UNINITIALISED2PASSIVE);
+                    intermediaryApi.updateControlLoopElementState(element.getId(), element.getOrderedState(),
+                            ControlLoopState.UNINITIALISED2PASSIVE);
                 }
             }
         } catch (PfModelException e) {
@@ -178,20 +179,12 @@ public class ControlLoopElementHandler implements ControlLoopElementListener, Cl
      */
     @Override
     public void handleStatistics(UUID controlLoopElementId) {
-        ControlLoopElement clElement = DcaeHandler.getInstance().getDcaeProvider()
-                .getIntermediaryApi().getControlLoopElement(controlLoopElementId);
+        ControlLoopElement clElement = intermediaryApi.getControlLoopElement(controlLoopElementId);
         if (clElement != null) {
             ClElementStatistics clElementStatistics = new ClElementStatistics();
             clElementStatistics.setControlLoopState(clElement.getState());
             clElementStatistics.setTimeStamp(Instant.now());
-            DcaeHandler.getInstance().getDcaeProvider().getIntermediaryApi()
-                .updateControlLoopElementStatistics(controlLoopElementId, clElementStatistics);
+            intermediaryApi.updateControlLoopElementStatistics(controlLoopElementId, clElementStatistics);
         }
     }
-
-    @Override
-    public void close() throws IOException {
-        clampClient.close();
-        consulClient.close();
-    }
 }
diff --git a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/handler/DcaeHandler.java b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/handler/DcaeHandler.java
deleted file mode 100644
index 1963e38b1..000000000
--- a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/handler/DcaeHandler.java
+++ /dev/null
@@ -1,82 +0,0 @@
-/*-
- * ============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.dcae.main.handler;
-
-import java.io.IOException;
-import java.util.Collections;
-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.dcae.main.parameters.ParticipantDcaeParameters;
-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.PfModelRuntimeException;
-
-/**
- * This class handles dcae of participants and control loop elements.
- *
- * </p>
- * It is effectively a singleton that is started at system start.
- */
-public class DcaeHandler extends ControlLoopHandler {
-
-    private final ParticipantDcaeParameters parameters;
-    @Getter
-    private DcaeProvider dcaeProvider;
-
-    /**
-     * Create a handler.
-     *
-     * @param parameters the parameters for access to the database
-     */
-    public DcaeHandler(ParticipantDcaeParameters parameters) {
-        super(parameters.getDatabaseProviderParameters());
-        this.parameters = parameters;
-    }
-
-    public static DcaeHandler getInstance() {
-        return Registry.get(DcaeHandler.class.getName());
-    }
-
-    @Override
-    public Set<Class<?>> getProviderClasses() {
-        return Collections.emptySet();
-    }
-
-    @Override
-    public void startProviders() {
-        dcaeProvider = new DcaeProvider(parameters);
-    }
-
-    @Override
-    public void stopProviders() {
-        try {
-            dcaeProvider.close();
-        } catch (IOException e) {
-            throw new PfModelRuntimeException(Response.Status.INTERNAL_SERVER_ERROR, e.getMessage());
-        } finally {
-            dcaeProvider = null;
-        }
-    }
-}
diff --git a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/handler/DcaeProvider.java b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/handler/DcaeProvider.java
deleted file mode 100644
index afaf1c754..000000000
--- a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/handler/DcaeProvider.java
+++ /dev/null
@@ -1,133 +0,0 @@
-/*-
- * ============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.dcae.main.handler;
-
-import java.io.Closeable;
-import java.io.IOException;
-import java.util.List;
-import java.util.Map;
-import java.util.UUID;
-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.models.controlloop.concepts.ControlLoopElement;
-import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoops;
-import org.onap.policy.clamp.controlloop.models.controlloop.concepts.Participant;
-import org.onap.policy.clamp.controlloop.models.messages.rest.TypedSimpleResponse;
-import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameters;
-import org.onap.policy.clamp.controlloop.participant.intermediary.api.ParticipantIntermediaryApi;
-import org.onap.policy.clamp.controlloop.participant.intermediary.api.ParticipantIntermediaryFactory;
-
-/**
- * This provider class dcae of participants and control loop elements.
- */
-public class DcaeProvider implements Closeable {
-    @Getter
-    private final ParticipantIntermediaryApi intermediaryApi;
-
-    private final ControlLoopElementHandler clElementHandler;
-
-    /**
-     * Create a participant dcae provider.
-     *
-     * @throws ControlLoopRuntimeException on errors creating the provider
-     */
-    public DcaeProvider(ParticipantDcaeParameters parameters) throws ControlLoopRuntimeException {
-        intermediaryApi = new ParticipantIntermediaryFactory().createApiImplementation();
-        intermediaryApi.init(parameters.getIntermediaryParameters());
-        clElementHandler = new ControlLoopElementHandler(parameters.getClampClientParameters(),
-                parameters.getConsulClientParameters());
-        intermediaryApi.registerControlLoopElementListener(clElementHandler);
-    }
-
-    @Override
-    public void close() throws IOException {
-        intermediaryApi.close();
-        clElementHandler.close();
-    }
-
-    /**
-     * Get the control loops.
-     *
-     * @param name the controlLoop, null to get all
-     * @param version the controlLoop, null to get all
-     * @return the control loops
-     * @throws ControlLoopException on errors getting the control loops
-     */
-    public ControlLoops getControlLoops(String name, String version) throws ControlLoopException {
-        return intermediaryApi.getControlLoops(name, version);
-    }
-
-    /**
-     * Get the dcae control loop elements.
-     *
-     * @param name the controlLoopElement, null to get all
-     * @param version the controlLoopElement, null to get all
-     * @return the control loop elements
-     * @throws ControlLoopException on errors getting the control loop elements
-     */
-    public Map<UUID, ControlLoopElement> getControlLoopElements(String name, String version)
-            throws ControlLoopException {
-        return intermediaryApi.getControlLoopElements(name, version);
-    }
-
-    /**
-     * Update the given control loop element in the dcae.
-     *
-     * @param element the control loop element to update
-     * @return response simple response returned
-     * @throws ControlLoopException on errors updating the control loop element
-     */
-    public TypedSimpleResponse<ControlLoopElement> updateControlLoopElement(ControlLoopElement element)
-            throws ControlLoopException {
-        TypedSimpleResponse<ControlLoopElement> response = new TypedSimpleResponse<>();
-        response.setResponse(intermediaryApi.updateControlLoopElementState(element.getId(),
-                element.getOrderedState(), element.getState()));
-        return response;
-    }
-
-    /**
-     * Get the current dcae participants.
-     *
-     * @param name the participant, null to get all
-     * @param version the participant, null to get all
-     * @return the list of participants
-     * @throws ControlLoopException on errors getting the participants
-     */
-    public List<Participant> getParticipants(String name, String version) throws ControlLoopException {
-        return intermediaryApi.getParticipants(name, version);
-    }
-
-    /**
-     * Update a dcae participant.
-     *
-     * @param participant the participant to update
-     * @return TypedSimpleResponse simple response
-     * @throws ControlLoopException on errors updating the participant
-     */
-
-    public TypedSimpleResponse<Participant> updateParticipant(Participant participant) throws ControlLoopException {
-        TypedSimpleResponse<Participant> response = new TypedSimpleResponse<>();
-        response.setResponse(
-                intermediaryApi.updateParticipantState(participant.getDefinition(), participant.getParticipantState()));
-        return response;
-    }
-}
diff --git a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/ParticipantDcaeParameterHandler.java b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/ParticipantDcaeParameterHandler.java
index 8d9bef98c..689bb40c2 100644
--- a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/ParticipantDcaeParameterHandler.java
+++ b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/ParticipantDcaeParameterHandler.java
@@ -23,56 +23,60 @@ package org.onap.policy.clamp.controlloop.participant.dcae.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.dcae.main.startstop.ParticipantDcaeCommandLineArguments;
-import org.onap.policy.common.parameters.ValidationResult;
+import org.onap.policy.common.parameters.BeanValidationResult;
 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.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * This class handles reading, parsing and validating of control loop runtime parameters from JSON files.
  */
 public class ParticipantDcaeParameterHandler {
 
+    private static final Logger LOGGER = LoggerFactory.getLogger(ParticipantDcaeParameterHandler.class);
+
     private static final Coder CODER = new StandardCoder();
 
     /**
-     * Read the parameters from the parameter file.
+     * Read the parameters from the path of the file.
      *
-     * @param arguments the arguments passed to dcae
+     * @param path path of the config file.
      * @return the parameters read from the configuration file
      * @throws ControlLoopException on parameter exceptions
      */
-    public ParticipantDcaeParameters getParameters(final ParticipantDcaeCommandLineArguments arguments)
-            throws ControlLoopException {
+    public ParticipantDcaeParameters toParticipantDcaeParameters(String path) throws ControlLoopException {
         ParticipantDcaeParameters parameters = null;
-
         // Read the parameters
         try {
             // Read the parameters from JSON
-            File file = new File(arguments.getFullConfigurationFilePath());
+            File file = new File(path);
             parameters = CODER.decode(file, ParticipantDcaeParameters.class);
         } catch (final CoderException e) {
-            final String errorMessage = "error reading parameters from \"" + arguments.getConfigurationFilePath()
-                    + "\"\n" + "(" + e.getClass().getSimpleName() + ")";
+            final String errorMessage =
+                    "error reading parameters from \"" + path + "\"\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() + "\"";
+            final String errorMessage = "no parameters found in \"" + path + "\"";
+            LOGGER.error(errorMessage);
             throw new ControlLoopException(Response.Status.NOT_ACCEPTABLE, errorMessage);
         }
 
         // validate the parameters
-        final ValidationResult validationResult = parameters.validate();
+        final BeanValidationResult validationResult = parameters.validate();
         if (!validationResult.isValid()) {
-            String returnMessage =
-                    "validation error(s) on parameters from \"" + arguments.getConfigurationFilePath() + "\"\n";
-            returnMessage += validationResult.getResult();
+            final String returnMessage =
+                    "validation error(s) on parameters from \"" + path + "\"\n" + validationResult.getResult();
+
+            LOGGER.error(returnMessage);
             throw new ControlLoopException(Response.Status.NOT_ACCEPTABLE, returnMessage);
         }
 
         return parameters;
     }
+
 }
diff --git a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/ParticipantDcaeParameters.java b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/ParticipantDcaeParameters.java
index beb273086..469a6fe79 100644
--- a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/ParticipantDcaeParameters.java
+++ b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/parameters/ParticipantDcaeParameters.java
@@ -24,7 +24,7 @@ import javax.validation.constraints.NotBlank;
 import lombok.Getter;
 import org.apache.commons.lang3.StringUtils;
 import org.onap.policy.clamp.controlloop.participant.intermediary.parameters.ParticipantIntermediaryParameters;
-import org.onap.policy.common.endpoints.parameters.RestServerParameters;
+import org.onap.policy.common.endpoints.event.comm.bus.internal.BusTopicParams;
 import org.onap.policy.common.parameters.BeanValidationResult;
 import org.onap.policy.common.parameters.ParameterGroupImpl;
 import org.onap.policy.common.parameters.ValidationStatus;
@@ -40,11 +40,14 @@ import org.onap.policy.models.provider.PolicyModelsProviderParameters;
 @NotBlank
 @Getter
 public class ParticipantDcaeParameters extends ParameterGroupImpl {
+
+    private static final String MSG_IS_BLANK = "is blank";
+
     @Valid
-    private RestServerParameters clampClientParameters;
+    private BusTopicParams clampClientParameters;
 
     @Valid
-    private RestServerParameters consulClientParameters;
+    private BusTopicParams consulClientParameters;
 
     private ParticipantIntermediaryParameters intermediaryParameters;
     private PolicyModelsProviderParameters databaseProviderParameters;
@@ -71,21 +74,21 @@ public class ParticipantDcaeParameters extends ParameterGroupImpl {
         return result;
     }
 
-    private BeanValidationResult checkMissingMandatoryParams(RestServerParameters clientParameters) {
-        BeanValidationResult result = new BeanValidationResult(clientParameters.getName(), clientParameters);
-        if (StringUtils.isBlank(clientParameters.getHost())) {
-            result.addResult("Host", clientParameters.getHost(), ValidationStatus.INVALID, "is blank");
+    private BeanValidationResult checkMissingMandatoryParams(BusTopicParams clientParameters) {
+        BeanValidationResult result = new BeanValidationResult(clientParameters.getClientName(), clientParameters);
+        if (clientParameters.isHostnameInvalid()) {
+            result.addResult("Host", clientParameters.getHostname(), ValidationStatus.INVALID, MSG_IS_BLANK);
         }
-        if (StringUtils.isBlank(clientParameters.getName())) {
-            result.addResult("Name", clientParameters.getName(), ValidationStatus.INVALID, "is blank");
+        if (clientParameters.isClientNameInvalid()) {
+            result.addResult("Name", clientParameters.getClientName(), ValidationStatus.INVALID, MSG_IS_BLANK);
         }
         if (StringUtils.isBlank(clientParameters.getPassword())) {
-            result.addResult("Password", clientParameters.getPassword(), ValidationStatus.INVALID, "is blank");
+            result.addResult("Password", clientParameters.getPassword(), ValidationStatus.INVALID, MSG_IS_BLANK);
         }
         if (StringUtils.isBlank(clientParameters.getUserName())) {
-            result.addResult("UserName", clientParameters.getUserName(), ValidationStatus.INVALID, "is blank");
+            result.addResult("UserName", clientParameters.getUserName(), ValidationStatus.INVALID, MSG_IS_BLANK);
         }
-        if (clientParameters.getPort() <= 0 || clientParameters.getPort() >= 65535) {
+        if (clientParameters.isPortInvalid()) {
             result.addResult("Port", clientParameters.getPort(), ValidationStatus.INVALID, "is not valid");
         }
         return result;
diff --git a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/Main.java b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/Main.java
deleted file mode 100644
index 2b47a2c13..000000000
--- a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/Main.java
+++ /dev/null
@@ -1,151 +0,0 @@
-/*-
- * ============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.dcae.main.startstop;
-
-import java.util.Arrays;
-import javax.ws.rs.core.Response;
-import lombok.Getter;
-import org.onap.policy.clamp.controlloop.common.ControlLoopConstants;
-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.dcae.main.parameters.ParticipantDcaeParameterHandler;
-import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameters;
-import org.onap.policy.common.utils.resources.MessageConstants;
-import org.onap.policy.common.utils.services.Registry;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-/**
- * This class initiates ONAP Policy Framework Control Loop participant component.
- */
-public class Main {
-
-    private static final Logger LOGGER = LoggerFactory.getLogger(Main.class);
-
-    private ParticipantDcaeActivator activator;
-
-    @Getter
-    private ParticipantDcaeParameters 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 control loop participant service with arguments - {}", argumentString);
-
-        // Check the arguments
-        final ParticipantDcaeCommandLineArguments arguments = new ParticipantDcaeCommandLineArguments();
-        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 ParticipantDcaeParameterHandler().getParameters(arguments);
-
-            // Now, create the activator for the service
-            activator = new ParticipantDcaeActivator(parameterGroup);
-            Registry.register(ControlLoopConstants.REG_CLRUNTIME_ACTIVATOR, activator);
-
-            // Start the activator
-            activator.start();
-        } catch (Exception exp) {
-            if (null != activator) {
-                Registry.unregister(ControlLoopConstants.REG_CLRUNTIME_ACTIVATOR);
-            }
-            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 control loop participant service
-     * when its run method is called.
-     */
-    private class ClRuntimeShutdownHookClass extends Thread {
-        /*
-         * (non-Javadoc)
-         *
-         * @see java.lang.Runnable#run()
-         */
-        @Override
-        public void run() {
-            if (!activator.isAlive()) {
-                return;
-            }
-
-            try {
-                // Shutdown the control loop participant service and wait for everything to stop
-                activator.stop();
-            } catch (final RuntimeException e) {
-                LOGGER.warn("error occured during shut down of the control loop participant service", 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-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/ParticipantDcaeActivator.java b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/ParticipantDcaeActivator.java
deleted file mode 100644
index d485895cf..000000000
--- a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/ParticipantDcaeActivator.java
+++ /dev/null
@@ -1,58 +0,0 @@
-/*-
- * ============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.dcae.main.startstop;
-
-import java.util.concurrent.atomic.AtomicReference;
-import lombok.Getter;
-import org.onap.policy.clamp.controlloop.participant.dcae.main.handler.DcaeHandler;
-import org.onap.policy.clamp.controlloop.participant.dcae.main.parameters.ParticipantDcaeParameters;
-import org.onap.policy.common.utils.services.ServiceManagerContainer;
-
-/**
- * This class activates the control loop runtime component as a complete service together with all its controllers,
- * listeners & handlers.
- */
-public class ParticipantDcaeActivator extends ServiceManagerContainer {
-    @Getter
-    private final ParticipantDcaeParameters parameters;
-
-    /**
-     * Instantiate the activator for the dcae as a complete service.
-     *
-     * @param parameters the parameters for the control loop runtime service
-     */
-    public ParticipantDcaeActivator(final ParticipantDcaeParameters parameters) {
-        this.parameters = parameters;
-
-        final AtomicReference<DcaeHandler> dcaeHandler = new AtomicReference<>();
-
-        // @formatter:off
-        addAction("Dcae Handler",
-            () -> dcaeHandler.set(new DcaeHandler(parameters)),
-            () -> dcaeHandler.get().close());
-
-        addAction("Dcae Providers",
-            () -> dcaeHandler.get().startProviders(),
-            () -> dcaeHandler.get().stopProviders());
-
-        // @formatter:on
-    }
-}
diff --git a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/ParticipantDcaeCommandLineArguments.java b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/ParticipantDcaeCommandLineArguments.java
deleted file mode 100644
index 0bf382ab1..000000000
--- a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/ParticipantDcaeCommandLineArguments.java
+++ /dev/null
@@ -1,151 +0,0 @@
-/*-
- * ============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.dcae.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.clamp.controlloop.common.startstop.CommonCommandLineArguments;
-import org.onap.policy.common.utils.resources.ResourceUtils;
-
-/**
- * This class reads and handles command line parameters for the control loop runtime service.
- *
- */
-public class ParticipantDcaeCommandLineArguments {
-    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 dcae participant.
-     */
-    public ParticipantDcaeCommandLineArguments() {
-        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 ParticipantDcaeCommandLineArguments(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 dcae 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);
-    }
-}