Convert Participant Simulator to SpringBoot Application

Issue-ID: POLICY-3246
Change-Id: I0e5220be826531cf0338d5cad7018d06bda3daf5
Signed-off-by: FrancescoFioraEst <francesco.fiora@est.tech>

20 files changed, 683 insertions, 638 deletions

diff --git a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/ParticipantSimulatorApplication.java b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/ParticipantSimulatorApplication.java
new file mode 100644
index 000000000..3aa1c36db
--- /dev/null
+++ b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/ParticipantSimulatorApplication.java
@@ -0,0 +1,36 @@
+/*-

+ * ============LICENSE_START=======================================================

+ *  Copyright (C) 2021 Nordix Foundation.

+ * ================================================================================

+ * Licensed under the Apache License, Version 2.0 (the "License");

+ * you may not use this file except in compliance with the License.

+ * You may obtain a copy of the License at

+ *

+ *      http://www.apache.org/licenses/LICENSE-2.0

+ *

+ * Unless required by applicable law or agreed to in writing, software

+ * distributed under the License is distributed on an "AS IS" BASIS,

+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+ * See the License for the specific language governing permissions and

+ * limitations under the License.

+ *

+ * SPDX-License-Identifier: Apache-2.0

+ * ============LICENSE_END=========================================================

+ */

+

+package org.onap.policy.clamp.controlloop.participant.simulator;

+

+import org.springframework.boot.SpringApplication;

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

+

+/**

+ * Starter.

+ *

+ */

+@SpringBootApplication

+public class ParticipantSimulatorApplication {

+

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

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

+    }

+}

diff --git a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/config/AafConfiguration.java b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/config/AafConfiguration.java
new file mode 100644
index 000000000..c8922a1f5
--- /dev/null
+++ b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/config/AafConfiguration.java
@@ -0,0 +1,46 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP CLAMP
+ * ================================================================================
+ * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights
+ *                             reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END============================================
+ * ===================================================================
+ *
+ */
+
+package org.onap.policy.clamp.controlloop.participant.simulator.config;
+
+import javax.servlet.Filter;
+import org.onap.policy.clamp.controlloop.participant.simulator.main.rest.ParticipantSimulatorAafFilter;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Profile;
+
+@Configuration
+@Profile("clamp-aaf-authentication")
+public class AafConfiguration {
+
+    /**
+     * Method to return Aaf filter.
+     *
+     * @return Filter
+     */
+    @Bean
+    public Filter aafFilter() {
+        return new ParticipantSimulatorAafFilter();
+    }
+
+}
diff --git a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/config/ParametersConfig.java b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/config/ParametersConfig.java
new file mode 100644
index 000000000..936df2c57
--- /dev/null
+++ b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/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.simulator.config;
+
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopException;
+import org.onap.policy.clamp.controlloop.participant.simulator.main.parameters.ParticipantSimulatorParameterHandler;
+import org.onap.policy.clamp.controlloop.participant.simulator.main.parameters.ParticipantSimulatorParameters;
+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 ParticipantSimulatorParameters participantSimulatorParameters() throws ControlLoopException {
+        return new ParticipantSimulatorParameterHandler().toParticipantSimulatorParameters(file);
+    }
+}
diff --git a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/config/ParticipantConfig.java b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/config/ParticipantConfig.java
new file mode 100644
index 000000000..f4e6791ec
--- /dev/null
+++ b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/config/ParticipantConfig.java
@@ -0,0 +1,61 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.clamp.controlloop.participant.simulator.config;
+
+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.simulator.main.parameters.ParticipantSimulatorParameters;
+import org.onap.policy.clamp.controlloop.participant.simulator.main.rest.RequestResponseLoggingFilter;
+import org.springframework.boot.web.servlet.FilterRegistrationBean;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class ParticipantConfig {
+
+    /**
+     * Create ParticipantIntermediaryApi.
+     *
+     * @param parameters the Participant Dcae Parameters
+     * @return ParticipantIntermediaryApi
+     */
+    @Bean
+    public ParticipantIntermediaryApi participantIntermediaryApi(ParticipantSimulatorParameters parameters) {
+        ParticipantIntermediaryApi intermediaryApi = new ParticipantIntermediaryFactory().createApiImplementation();
+        intermediaryApi.init(parameters.getIntermediaryParameters());
+        return intermediaryApi;
+    }
+
+    /**
+     * logging Filter configuration.
+     *
+     * @return FilterRegistrationBean
+     */
+    @Bean
+    public FilterRegistrationBean<RequestResponseLoggingFilter> loggingFilter() {
+        FilterRegistrationBean<RequestResponseLoggingFilter> registrationBean = new FilterRegistrationBean<>();
+
+        registrationBean.setFilter(new RequestResponseLoggingFilter());
+        registrationBean.addUrlPatterns("/onap/participantsim/v2/*");
+
+        return registrationBean;
+    }
+}
diff --git a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/config/SecurityConfig.java b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/config/SecurityConfig.java
new file mode 100644
index 000000000..cdfd5eac3
--- /dev/null
+++ b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/config/SecurityConfig.java
@@ -0,0 +1,39 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.clamp.controlloop.participant.simulator.config;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
+
+@Configuration
+public class SecurityConfig extends WebSecurityConfigurerAdapter {
+
+    @Override
+    protected void configure(HttpSecurity http) throws Exception {
+        // @formatter:off
+        http.authorizeRequests()
+            .antMatchers().authenticated()
+            .anyRequest().authenticated()
+            .and().httpBasic().and().csrf().disable();
+        // @formatter:on
+    }
+}
diff --git a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/config/SpringFoxConfig.java b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/config/SpringFoxConfig.java
new file mode 100644
index 000000000..bf776140b
--- /dev/null
+++ b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/config/SpringFoxConfig.java
@@ -0,0 +1,45 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.clamp.controlloop.participant.simulator.config;
+
+import org.onap.policy.clamp.controlloop.participant.simulator.simulation.rest.SimulationElementController;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import springfox.documentation.builders.PathSelectors;
+import springfox.documentation.builders.RequestHandlerSelectors;
+import springfox.documentation.spi.DocumentationType;
+import springfox.documentation.spring.web.plugins.Docket;
+
+@Configuration
+public class SpringFoxConfig {
+
+    /**
+     * Docket Spring Fox Config.
+     *
+     * @return Docket
+     */
+    @Bean
+    public Docket api() {
+        return new Docket(DocumentationType.SWAGGER_2).select()
+                .apis(RequestHandlerSelectors.basePackage(SimulationElementController.class.getPackageName()))
+                .paths(PathSelectors.any()).build();
+    }
+}
diff --git a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/config/YamlConfiguration.java b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/config/YamlConfiguration.java
new file mode 100644
index 000000000..e84a7fc0a
--- /dev/null
+++ b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/config/YamlConfiguration.java
@@ -0,0 +1,35 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.clamp.controlloop.participant.simulator.config;
+
+import java.util.List;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.converter.HttpMessageConverter;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
+public class YamlConfiguration implements WebMvcConfigurer {
+
+    @Override
+    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
+        converters.add(new YamlHttpMessageConverter<>());
+    }
+}
diff --git a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/config/YamlHttpMessageConverter.java b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/config/YamlHttpMessageConverter.java
new file mode 100644
index 000000000..4c8d324c6
--- /dev/null
+++ b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/config/YamlHttpMessageConverter.java
@@ -0,0 +1,60 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.clamp.controlloop.participant.simulator.config;
+
+import java.io.IOException;
+import java.io.OutputStreamWriter;
+import java.nio.charset.StandardCharsets;
+import org.springframework.http.HttpInputMessage;
+import org.springframework.http.HttpOutputMessage;
+import org.springframework.http.MediaType;
+import org.springframework.http.converter.AbstractHttpMessageConverter;
+import org.springframework.http.converter.HttpMessageNotReadableException;
+import org.springframework.http.converter.HttpMessageNotWritableException;
+import org.yaml.snakeyaml.Yaml;
+
+public class YamlHttpMessageConverter<T> extends AbstractHttpMessageConverter<T> {
+
+    public YamlHttpMessageConverter() {
+        super(new MediaType("application", "yaml"));
+    }
+
+    @Override
+    protected boolean supports(Class<?> clazz) {
+        return true;
+    }
+
+    @Override
+    protected T readInternal(Class<? extends T> clazz, HttpInputMessage inputMessage)
+            throws IOException, HttpMessageNotReadableException {
+        Yaml yaml = new Yaml();
+        return yaml.loadAs(inputMessage.getBody(), clazz);
+    }
+
+    @Override
+    protected void writeInternal(T t, HttpOutputMessage outputMessage)
+            throws IOException, HttpMessageNotWritableException {
+        Yaml yaml = new Yaml();
+        try (OutputStreamWriter writer = new OutputStreamWriter(outputMessage.getBody(), StandardCharsets.UTF_8)) {
+            yaml.dump(t, writer);
+        }
+    }
+}
diff --git a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/parameters/ParticipantSimulatorParameterHandler.java b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/parameters/ParticipantSimulatorParameterHandler.java
index 42f458602..178d08794 100644
--- a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/parameters/ParticipantSimulatorParameterHandler.java
+++ b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/parameters/ParticipantSimulatorParameterHandler.java
@@ -23,8 +23,7 @@ package org.onap.policy.clamp.controlloop.participant.simulator.main.parameters;
 import java.io.File;
 import javax.ws.rs.core.Response;
 import org.onap.policy.clamp.controlloop.common.exception.ControlLoopException;
-import org.onap.policy.clamp.controlloop.participant.simulator.main.startstop.ParticipantSimulatorCommandLineArguments;
-import org.onap.policy.common.parameters.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;
@@ -37,42 +36,41 @@ public class ParticipantSimulatorParameterHandler {
     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 simulator
+     * @param path path of the config file.
      * @return the parameters read from the configuration file
      * @throws ControlLoopException on parameter exceptions
      */
-    public ParticipantSimulatorParameters getParameters(final ParticipantSimulatorCommandLineArguments arguments)
-            throws ControlLoopException {
+    public ParticipantSimulatorParameters toParticipantSimulatorParameters(String path) throws ControlLoopException {
         ParticipantSimulatorParameters 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, ParticipantSimulatorParameters.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 + "\"" + System.lineSeparator() + "("
+                    + 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 + "\"";
             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 + "\""
+                    + System.lineSeparator() + validationResult.getResult();
+
             throw new ControlLoopException(Response.Status.NOT_ACCEPTABLE, returnMessage);
         }
 
         return parameters;
     }
+
 }
diff --git a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/rest/RestController.java b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/rest/AbstractRestController.java
index 444f37889..b872ec0c6 100644
--- a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/rest/RestController.java
+++ b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/rest/AbstractRestController.java
@@ -27,34 +27,29 @@ import io.swagger.annotations.SecurityDefinition;
 import io.swagger.annotations.SwaggerDefinition;
 import io.swagger.annotations.Tag;
 import java.net.HttpURLConnection;
-import java.util.UUID;
-import javax.ws.rs.Path;
-import javax.ws.rs.Produces;
 import javax.ws.rs.core.MediaType;
-import javax.ws.rs.core.Response.ResponseBuilder;
 import lombok.AccessLevel;
 import lombok.Getter;
-import org.onap.policy.clamp.controlloop.participant.simulator.simulation.SimulationHandler;
 import org.onap.policy.clamp.controlloop.participant.simulator.simulation.SimulationProvider;
+import org.springframework.web.bind.annotation.RequestMapping;
 
 /**
  * Common superclass to provide REST endpoints for the participant simulator.
  */
 // @formatter:off
-@Path("/onap/participantsim/v2")
+@RequestMapping(value = "/v2", produces = {MediaType.APPLICATION_JSON, AbstractRestController.APPLICATION_YAML})
 @Api(value = "Participant Simulator API")
-@Produces({MediaType.APPLICATION_JSON, RestController.APPLICATION_YAML})
 @SwaggerDefinition(
     info = @Info(description =
                     "Participant Simulator", version = "v1.0",
                     title = "Participant Simulator"),
-    consumes = {MediaType.APPLICATION_JSON, RestController.APPLICATION_YAML},
-    produces = {MediaType.APPLICATION_JSON, RestController.APPLICATION_YAML},
+    consumes = {MediaType.APPLICATION_JSON, AbstractRestController.APPLICATION_YAML},
+    produces = {MediaType.APPLICATION_JSON, AbstractRestController.APPLICATION_YAML},
     schemes = {SwaggerDefinition.Scheme.HTTP, SwaggerDefinition.Scheme.HTTPS},
     tags = {@Tag(name = "participantsim", description = "Participant Simulator")},
     securityDefinition = @SecurityDefinition(basicAuthDefinitions = {@BasicAuthDefinition(key = "basicAuth")}))
 // @formatter:on
-public class RestController {
+public abstract class AbstractRestController {
     public static final String APPLICATION_YAML = "application/yaml";
 
     public static final String EXTENSION_NAME = "interface info";
@@ -90,41 +85,16 @@ public class RestController {
     public static final String AUTHENTICATION_ERROR_MESSAGE = "Authentication Error";
     public static final String AUTHORIZATION_ERROR_MESSAGE = "Authorization Error";
     public static final String SERVER_ERROR_MESSAGE = "Internal Server Error";
+
     @Getter(AccessLevel.PROTECTED)
     // The provider for simulation requests
     private SimulationProvider simulationProvider;
 
-
     /**
      * create a Rest Controller.
      */
-    public RestController() {
-        simulationProvider = SimulationHandler.getInstance().getSimulationProvider();
-    }
-
-    /**
-     * Adds version headers to the response.
-     *
-     * @param respBuilder response builder
-     * @return the response builder, with version headers
-     */
-    public ResponseBuilder addVersionControlHeaders(ResponseBuilder respBuilder) {
-        return respBuilder.header(VERSION_MINOR_NAME, "0").header(VERSION_PATCH_NAME, "0").header(VERSION_LATEST_NAME,
-                API_VERSION);
+    protected AbstractRestController(SimulationProvider simulationProvider) {
+        this.simulationProvider = simulationProvider;
     }
 
-    /**
-     * Adds logging headers to the response.
-     *
-     * @param respBuilder response builder
-     * @return the response builder, with version logging
-     */
-    public ResponseBuilder addLoggingHeaders(ResponseBuilder respBuilder, UUID requestId) {
-        if (requestId == null) {
-            // Generate a random uuid if client does not embed requestId in rest request
-            return respBuilder.header(REQUEST_ID_NAME, UUID.randomUUID());
-        }
-
-        return respBuilder.header(REQUEST_ID_NAME, requestId);
-    }
 }
diff --git a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/rest/GlobalControllerExceptionHandler.java b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/rest/GlobalControllerExceptionHandler.java
new file mode 100644
index 000000000..562bbd13e
--- /dev/null
+++ b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/rest/GlobalControllerExceptionHandler.java
@@ -0,0 +1,49 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.clamp.controlloop.participant.simulator.main.rest;
+
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopException;
+import org.onap.policy.clamp.controlloop.models.messages.rest.commissioning.CommissioningResponse;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.ResponseStatus;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+@RestControllerAdvice
+public class GlobalControllerExceptionHandler {
+
+    /**
+     * Handle ControlLoopException.
+     *
+     * @param ex ControlLoopException
+     * @return ResponseEntity
+     */
+    @ExceptionHandler(ControlLoopException.class)
+    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
+    public ResponseEntity<CommissioningResponse> handleBadRequest(ControlLoopException ex) {
+
+        CommissioningResponse resp = new CommissioningResponse();
+        resp.setErrorDetails(ex.getErrorResponse().getErrorMessage());
+
+        return ResponseEntity.status(ex.getErrorResponse().getResponseCode().getStatusCode()).body(resp);
+    }
+}
diff --git a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/rest/ParticipantErrorController.java b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/rest/ParticipantErrorController.java
new file mode 100644
index 000000000..6607377bb
--- /dev/null
+++ b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/rest/ParticipantErrorController.java
@@ -0,0 +1,102 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.clamp.controlloop.participant.simulator.main.rest;
+
+import io.swagger.v3.oas.annotations.Hidden;
+import java.util.Map;
+import javax.servlet.RequestDispatcher;
+import javax.servlet.http.HttpServletRequest;
+import org.onap.policy.clamp.controlloop.models.messages.rest.SimpleResponse;
+import org.onap.policy.clamp.controlloop.models.messages.rest.TypedSimpleResponse;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.web.error.ErrorAttributeOptions;
+import org.springframework.boot.web.servlet.error.ErrorAttributes;
+import org.springframework.boot.web.servlet.error.ErrorController;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.context.request.ServletWebRequest;
+
+@Controller
+@Hidden
+public class ParticipantErrorController implements ErrorController {
+
+    private final ErrorAttributes errorAttributes;
+
+    @Value("${server.error.path}")
+    private String path;
+
+    /**
+     * Constructor.
+     *
+     * @param errorAttributes ErrorAttributes
+     */
+    public ParticipantErrorController(ErrorAttributes errorAttributes) {
+        this.errorAttributes = errorAttributes;
+    }
+
+    protected HttpStatus getStatus(HttpServletRequest request) {
+        Integer statusCode = (Integer) request.getAttribute(RequestDispatcher.ERROR_STATUS_CODE);
+        if (statusCode == null) {
+            return HttpStatus.INTERNAL_SERVER_ERROR;
+        }
+        try {
+            return HttpStatus.valueOf(statusCode);
+        } catch (Exception ex) {
+            return HttpStatus.INTERNAL_SERVER_ERROR;
+        }
+    }
+
+    /**
+     * Handle Errors not handled to GlobalControllerExceptionHandler.
+     *
+     * @param request HttpServletRequest
+     * @return ResponseEntity
+     */
+    @RequestMapping(value = "${server.error.path}", produces = MediaType.APPLICATION_JSON_VALUE)
+    public ResponseEntity<TypedSimpleResponse<SimpleResponse>> handleError(HttpServletRequest request) {
+        Map<String, Object> map = this.errorAttributes.getErrorAttributes(new ServletWebRequest(request),
+                ErrorAttributeOptions.defaults());
+
+        StringBuilder sb = new StringBuilder();
+        final Object error = map.get("error");
+        if (error != null) {
+            sb.append(error.toString() + " ");
+        }
+        final Object message = map.get("message");
+        if (message != null) {
+            sb.append(message.toString());
+        }
+
+        TypedSimpleResponse<SimpleResponse> resp = new TypedSimpleResponse<>();
+        resp.setErrorDetails(sb.toString());
+
+        return ResponseEntity.status(getStatus(request)).body(resp);
+
+    }
+
+    @Override
+    public String getErrorPath() {
+        return path;
+    }
+}
diff --git a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/rest/RequestResponseLoggingFilter.java b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/rest/RequestResponseLoggingFilter.java
new file mode 100644
index 000000000..3aaeeaf72
--- /dev/null
+++ b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/rest/RequestResponseLoggingFilter.java
@@ -0,0 +1,63 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.clamp.controlloop.participant.simulator.main.rest;
+
+import java.io.IOException;
+import java.util.UUID;
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import org.springframework.core.annotation.Order;
+import org.springframework.stereotype.Component;
+
+@Component
+@Order(2)
+public class RequestResponseLoggingFilter implements Filter {
+
+    private static final String VERSION_MINOR_NAME = "X-MinorVersion";
+    private static final String VERSION_PATCH_NAME = "X-PatchVersion";
+    private static final String VERSION_LATEST_NAME = "X-LatestVersion";
+    public static final String API_VERSION = "1.0.0";
+    public static final String REQUEST_ID_NAME = "X-ONAP-RequestID";
+
+    @Override
+    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
+            throws IOException, ServletException {
+
+
+        HttpServletResponse res = (HttpServletResponse) response;
+        HttpServletRequest req = (HttpServletRequest) request;
+
+        String requestId = req.getHeader(REQUEST_ID_NAME);
+        res.addHeader(REQUEST_ID_NAME, requestId != null ? requestId : UUID.randomUUID().toString());
+
+        res.addHeader(VERSION_MINOR_NAME, "0");
+        res.addHeader(VERSION_PATCH_NAME, "0");
+        res.addHeader(VERSION_LATEST_NAME, API_VERSION);
+
+        chain.doFilter(request, response);
+    }
+
+}
diff --git a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/Main.java b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/Main.java
deleted file mode 100644
index e6c93d55d..000000000
--- a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/Main.java
+++ /dev/null
@@ -1,141 +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.simulator.main.startstop;
-
-import java.util.Arrays;
-import javax.ws.rs.core.Response;
-import lombok.Getter;
-import org.onap.policy.clamp.controlloop.common.exception.ControlLoopException;
-import org.onap.policy.clamp.controlloop.common.exception.ControlLoopRuntimeException;
-import org.onap.policy.clamp.controlloop.participant.simulator.main.parameters.ParticipantSimulatorParameterHandler;
-import org.onap.policy.clamp.controlloop.participant.simulator.main.parameters.ParticipantSimulatorParameters;
-import org.onap.policy.common.utils.resources.MessageConstants;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-/**
- * This class initiates participant simulator.
- */
-public class Main {
-
-    private static final Logger LOGGER = LoggerFactory.getLogger(Main.class);
-
-    private ParticipantSimulatorActivator activator;
-
-    @Getter
-    private ParticipantSimulatorParameters parameterGroup;
-
-    /**
-     * Instantiates the control loop participant service.
-     *
-     * @param args the command line arguments
-     */
-    public Main(final String[] args) {
-        final String argumentString = Arrays.toString(args);
-        LOGGER.info("Starting the participant service with arguments - {}", argumentString);
-
-        // Check the arguments
-        final ParticipantSimulatorCommandLineArguments arguments = new ParticipantSimulatorCommandLineArguments();
-        try {
-            // The arguments return a string if there is a message to print and we should exit
-            final String argumentMessage = arguments.parse(args);
-            if (argumentMessage != null) {
-                LOGGER.info(argumentMessage);
-                return;
-            }
-            // Validate that the arguments are sane
-            arguments.validate();
-
-            // Read the parameters
-            parameterGroup = new ParticipantSimulatorParameterHandler().getParameters(arguments);
-
-            // Now, create the activator for the service
-            activator = new ParticipantSimulatorActivator(parameterGroup);
-
-            // Start the activator
-            activator.start();
-        } catch (Exception exp) {
-            throw new ControlLoopRuntimeException(Response.Status.BAD_REQUEST,
-                String.format(MessageConstants.START_FAILURE_MSG, MessageConstants.POLICY_CLAMP), exp);
-        }
-
-        // Add a shutdown hook to shut everything down in an orderly manner
-        Runtime.getRuntime().addShutdownHook(new ClParticipantSimulatorShutdownHookClass());
-        String successMsg = String.format(MessageConstants.START_SUCCESS_MSG, MessageConstants.POLICY_CLAMP);
-        LOGGER.info(successMsg);
-    }
-
-    /**
-     * Check if main is running.
-     */
-    public boolean isRunning() {
-        return activator != null && activator.isAlive();
-    }
-
-    /**
-     * Shut down Execution.
-     *
-     * @throws ControlLoopException on shutdown errors
-     */
-    public void shutdown() throws ControlLoopException {
-        // clear the parameterGroup variable
-        parameterGroup = null;
-
-        // clear the cl participant activator
-        if (activator != null) {
-            activator.stop();
-        }
-    }
-
-    /**
-     * The Class ClParticipantSimulatorShutdownHookClass terminates the control loop participant service
-     * when its run method is called.
-     */
-    private class ClParticipantSimulatorShutdownHookClass extends Thread {
-        /*
-         * (non-Javadoc)
-         *
-         * @see java.lang.Runnable#run()
-         */
-        @Override
-        public void run() {
-            try {
-                // Shutdown the participant simulator and wait for everything to stop
-                shutdown();
-            } catch (final RuntimeException | ControlLoopException e) {
-                LOGGER.warn("error occured during shut down of the participant simulator", e);
-            }
-        }
-    }
-
-    /**
-     * The main method.
-     *
-     * @param args the arguments
-     */
-    public static void main(final String[] args) {      // NOSONAR
-        /*
-         * NOTE: arguments are validated by the constructor, thus sonar is disabled.
-         */
-
-        new Main(args);
-    }
-}
diff --git a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/ParticipantSimulatorActivator.java b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/ParticipantSimulatorActivator.java
deleted file mode 100644
index 4daa0393f..000000000
--- a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/ParticipantSimulatorActivator.java
+++ /dev/null
@@ -1,75 +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.simulator.main.startstop;
-
-import java.util.Set;
-import java.util.concurrent.atomic.AtomicReference;
-import lombok.Getter;
-import org.onap.policy.clamp.controlloop.participant.simulator.main.parameters.ParticipantSimulatorParameters;
-import org.onap.policy.clamp.controlloop.participant.simulator.main.rest.ParticipantSimulatorAafFilter;
-import org.onap.policy.clamp.controlloop.participant.simulator.simulation.SimulationHandler;
-import org.onap.policy.common.endpoints.http.server.RestServer;
-import org.onap.policy.common.utils.services.ServiceManagerContainer;
-
-/**
- * This class activates the participant simulator component as a complete service together with all its controllers,
- * listeners and handlers.
- */
-public class ParticipantSimulatorActivator extends ServiceManagerContainer {
-    @Getter
-    private final ParticipantSimulatorParameters parameters;
-
-    /**
-     * Instantiate the activator for the simulator as a complete service.
-     *
-     * @param parameters the parameters for the participant service
-     */
-    public ParticipantSimulatorActivator(final ParticipantSimulatorParameters parameters) {
-        this.parameters = parameters;
-
-        final AtomicReference<SimulationHandler> simulationHandler = new AtomicReference<>();
-        final AtomicReference<RestServer> restServer = new AtomicReference<>();
-
-        // @formatter:off
-        addAction("Simulation Handler",
-            () -> simulationHandler.set(new SimulationHandler(parameters)),
-            () -> simulationHandler.get().close());
-
-        addAction("Simulation Providers",
-            () -> simulationHandler.get().startProviders(),
-            () -> simulationHandler.get().stopProviders());
-
-        parameters.getRestServerParameters().setName(parameters.getName());
-
-        addAction("REST server",
-            () -> {
-                Set<Class<?>> providerClasses = simulationHandler.get().getProviderClasses();
-
-                RestServer server = new RestServer(parameters.getRestServerParameters(),
-                        ParticipantSimulatorAafFilter.class,
-                        providerClasses.toArray(new Class<?>[providerClasses.size()]));
-                restServer.set(server);
-                restServer.get().start();
-            },
-            () -> restServer.get().stop());
-        // @formatter:on
-    }
-}
diff --git a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/ParticipantSimulatorCommandLineArguments.java b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/ParticipantSimulatorCommandLineArguments.java
deleted file mode 100644
index 51ac3a4d5..000000000
--- a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/main/startstop/ParticipantSimulatorCommandLineArguments.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.simulator.main.startstop;
-
-import java.io.File;
-import java.io.PrintWriter;
-import java.io.StringWriter;
-import java.net.URL;
-import java.util.Arrays;
-import javax.ws.rs.core.Response;
-import lombok.Getter;
-import lombok.Setter;
-import org.apache.commons.cli.CommandLine;
-import org.apache.commons.cli.DefaultParser;
-import org.apache.commons.cli.HelpFormatter;
-import org.apache.commons.cli.Option;
-import org.apache.commons.cli.Options;
-import org.apache.commons.cli.ParseException;
-import org.apache.commons.lang3.StringUtils;
-import org.onap.policy.clamp.controlloop.common.exception.ControlLoopException;
-import org.onap.policy.clamp.controlloop.common.exception.ControlLoopRuntimeException;
-import org.onap.policy.clamp.controlloop.common.startstop.CommonCommandLineArguments;
-import org.onap.policy.common.utils.resources.ResourceUtils;
-
-/**
- * This class reads and handles command line parameters for the participant simulator service.
- *
- */
-public class ParticipantSimulatorCommandLineArguments {
-    private static final String FILE_MESSAGE_PREAMBLE = " file \"";
-    private static final int HELP_LINE_LENGTH = 120;
-
-    private final Options options;
-    private final CommonCommandLineArguments commonCommandLineArguments;
-
-    @Getter()
-    @Setter()
-    private String configurationFilePath = null;
-
-    /**
-     * Construct the options for the participant component.
-     */
-    public ParticipantSimulatorCommandLineArguments() {
-        options = new Options();
-        commonCommandLineArguments = new CommonCommandLineArguments(options);
-    }
-
-    /**
-     * Construct the options for the participant component and parse in the given arguments.
-     *
-     * @param args The command line arguments
-     */
-    public ParticipantSimulatorCommandLineArguments(final String[] args) {
-        // Set up the options with the default constructor
-        this();
-
-        // Parse the arguments
-        try {
-            parse(args);
-        } catch (final ControlLoopException e) {
-            throw new ControlLoopRuntimeException(Response.Status.NOT_ACCEPTABLE,
-                    "parse error on participant parameters", e);
-        }
-    }
-
-    /**
-     * Parse the command line options.
-     *
-     * @param args The command line arguments
-     * @return a string with a message for help and version, or null if there is no message
-     * @throws ControlLoopException on command argument errors
-     */
-    public String parse(final String[] args) throws ControlLoopException {
-        // Clear all our arguments
-        setConfigurationFilePath(null);
-        CommandLine commandLine = null;
-        try {
-            commandLine = new DefaultParser().parse(options, args);
-        } catch (final ParseException e) {
-            throw new ControlLoopException(Response.Status.NOT_ACCEPTABLE,
-                    "invalid command line arguments specified : " + e.getMessage());
-        }
-
-        // Arguments left over after Commons CLI does its stuff
-        final String[] remainingArgs = commandLine.getArgs();
-
-        if (remainingArgs.length > 0) {
-            throw new ControlLoopException(Response.Status.NOT_ACCEPTABLE,
-                    "too many command line arguments specified : " + Arrays.toString(args));
-        }
-
-        if (commandLine.hasOption('h')) {
-            return 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-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/SimulationHandler.java b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/SimulationHandler.java
deleted file mode 100644
index df7f2a611..000000000
--- a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/SimulationHandler.java
+++ /dev/null
@@ -1,81 +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.simulator.simulation;
-
-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.simulator.main.parameters.ParticipantSimulatorParameters;
-import org.onap.policy.clamp.controlloop.participant.simulator.simulation.rest.SimulationElementController;
-import org.onap.policy.clamp.controlloop.participant.simulator.simulation.rest.SimulationParticipantController;
-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 simulation of participants and control loop elements.
- *
- * <p/>It is effectively a singleton that is started at system start.
- */
-public class SimulationHandler extends ControlLoopHandler {
-    private final ParticipantIntermediaryParameters participantParameters;
-
-    @Getter
-    private SimulationProvider simulationProvider;
-
-    /**
-     * Create a handler.
-     *
-     * @param parameters the parameters for access to the database
-     */
-    public SimulationHandler(ParticipantSimulatorParameters parameters) {
-        super(parameters.getDatabaseProviderParameters());
-        participantParameters = parameters.getIntermediaryParameters();
-    }
-
-    public static SimulationHandler getInstance() {
-        return Registry.get(SimulationHandler.class.getName());
-    }
-
-    @Override
-    public Set<Class<?>> getProviderClasses() {
-        return Set.of(SimulationElementController.class, SimulationParticipantController.class);
-    }
-
-    @Override
-    public void startProviders() {
-        simulationProvider = new SimulationProvider(participantParameters);
-    }
-
-    @Override
-    public void stopProviders() {
-        try {
-            simulationProvider.close();
-        } catch (IOException e) {
-            throw new PfModelRuntimeException(Response.Status.INTERNAL_SERVER_ERROR, "Stop providers failed ", e);
-        }
-    }
-}
diff --git a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/SimulationProvider.java b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/SimulationProvider.java
index 1fcbba3af..6ee4eac3e 100644
--- a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/SimulationProvider.java
+++ b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/SimulationProvider.java
@@ -20,44 +20,30 @@
 
 package org.onap.policy.clamp.controlloop.participant.simulator.simulation;
 
-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.ControlLoop;
 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.intermediary.api.ParticipantIntermediaryApi;
-import org.onap.policy.clamp.controlloop.participant.intermediary.api.ParticipantIntermediaryFactory;
-import org.onap.policy.clamp.controlloop.participant.intermediary.parameters.ParticipantIntermediaryParameters;
+import org.springframework.stereotype.Service;
 
 /**
  * This provider class simulation of participants and control loop elements.
  */
-public class SimulationProvider implements Closeable {
-    @Getter
+@Service
+public class SimulationProvider {
+
     private final ParticipantIntermediaryApi intermediaryApi;
 
     /**
      * Create a participant simulation provider.
-     *
-     * @throws ControlLoopRuntimeException on errors creating the provider
      */
-    public SimulationProvider(ParticipantIntermediaryParameters participantParameters)
-                     throws ControlLoopRuntimeException {
-        intermediaryApi = new ParticipantIntermediaryFactory().createApiImplementation();
-        intermediaryApi.init(participantParameters);
-    }
-
-    @Override
-    public void close() throws IOException {
-        intermediaryApi.close();
+    public SimulationProvider(ParticipantIntermediaryApi intermediaryApi) {
+        this.intermediaryApi = intermediaryApi;
     }
 
     /**
@@ -78,10 +64,8 @@ public class SimulationProvider implements Closeable {
      * @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 {
+    public Map<UUID, ControlLoopElement> getControlLoopElements(String name, String version) {
         return intermediaryApi.getControlLoopElements(name, version);
     }
 
@@ -90,13 +74,11 @@ public class SimulationProvider implements Closeable {
      *
      * @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 {
+    public TypedSimpleResponse<ControlLoopElement> updateControlLoopElement(ControlLoopElement element) {
         TypedSimpleResponse<ControlLoopElement> response = new TypedSimpleResponse<>();
-        response.setResponse(intermediaryApi.updateControlLoopElementState(
-                element.getId(), element.getOrderedState(), element.getState()));
+        response.setResponse(intermediaryApi.updateControlLoopElementState(element.getId(), element.getOrderedState(),
+                element.getState()));
         return response;
     }
 
@@ -106,9 +88,8 @@ public class SimulationProvider implements Closeable {
      * @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 {
+    public List<Participant> getParticipants(String name, String version) {
         return intermediaryApi.getParticipants(name, version);
     }
 
@@ -117,13 +98,11 @@ public class SimulationProvider implements Closeable {
      *
      * @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 {
+    public TypedSimpleResponse<Participant> updateParticipant(Participant participant) {
         TypedSimpleResponse<Participant> response = new TypedSimpleResponse<>();
-        response.setResponse(intermediaryApi.updateParticipantState(
-                participant.getDefinition(), participant.getParticipantState()));
+        response.setResponse(
+                intermediaryApi.updateParticipantState(participant.getDefinition(), participant.getParticipantState()));
         return response;
     }
 }
diff --git a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/rest/SimulationElementController.java b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/rest/SimulationElementController.java
index 1869047c9..de2a06223 100644
--- a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/rest/SimulationElementController.java
+++ b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/rest/SimulationElementController.java
@@ -28,30 +28,35 @@ import io.swagger.annotations.Authorization;
 import io.swagger.annotations.Extension;
 import io.swagger.annotations.ExtensionProperty;
 import io.swagger.annotations.ResponseHeader;
-import java.util.List;
 import java.util.Map;
 import java.util.UUID;
-import javax.ws.rs.GET;
-import javax.ws.rs.HeaderParam;
-import javax.ws.rs.PUT;
-import javax.ws.rs.Path;
-import javax.ws.rs.PathParam;
-import javax.ws.rs.core.Response;
-import javax.ws.rs.core.Response.Status;
-import org.onap.policy.clamp.controlloop.common.exception.ControlLoopException;
 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.messages.rest.SimpleResponse;
 import org.onap.policy.clamp.controlloop.models.messages.rest.TypedSimpleResponse;
-import org.onap.policy.clamp.controlloop.participant.simulator.main.rest.RestController;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import org.onap.policy.clamp.controlloop.participant.simulator.main.rest.AbstractRestController;
+import org.onap.policy.clamp.controlloop.participant.simulator.simulation.SimulationProvider;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestHeader;
+import org.springframework.web.bind.annotation.RestController;
 
 /**
  * Class to provide REST end points for participant simulator to query/update details of controlLoopElements.
  */
-public class SimulationElementController extends RestController {
-    private static final Logger LOGGER = LoggerFactory.getLogger(SimulationElementController.class);
+@RestController
+public class SimulationElementController extends AbstractRestController {
+
+    /**
+     * Constructor.
+     *
+     * @param simulationProvider the Simulation Provider
+     */
+    public SimulationElementController(SimulationProvider simulationProvider) {
+        super(simulationProvider);
+    }
 
     /**
      * Queries details of all control loop element within the simulator.
@@ -62,8 +67,7 @@ public class SimulationElementController extends RestController {
      * @return the control loop elements
      */
     // @formatter:off
-    @GET
-    @Path("/elements/{name}/{version}")
+    @GetMapping("/elements/{name}/{version}")
     @ApiOperation(value = "Query details of the requested simulated control loop elements",
             notes = "Queries details of the requested simulated control loop elements, "
                     + "returning all control loop element details",
@@ -100,24 +104,16 @@ public class SimulationElementController extends RestController {
             }
     )
     // @formatter:on
-    public Response elements(@HeaderParam(REQUEST_ID_NAME) @ApiParam(REQUEST_ID_PARAM_DESCRIPTION) UUID requestId,
-            @ApiParam(value = "Control loop element name", required = true) @PathParam("name") String name,
-            @ApiParam(value = "Control loop element version", required = true) @PathParam("version") String version) {
-
-        try {
-            Map<UUID, ControlLoopElement> response = getSimulationProvider().getControlLoopElements(name, version);
-            return addLoggingHeaders(addVersionControlHeaders(Response.status(Status.OK)), requestId).entity(response)
-                    .build();
-
-        } catch (ControlLoopException cle) {
-            LOGGER.warn("get of control loop elements failed", cle);
-            SimpleResponse resp = new SimpleResponse();
-            resp.setErrorDetails(cle.getErrorResponse().getErrorMessage());
-            return addLoggingHeaders(
-                    addVersionControlHeaders(Response.status(cle.getErrorResponse().getResponseCode())), requestId)
-                            .entity(resp).build();
-        }
+    public ResponseEntity<Map<UUID, ControlLoopElement>> elements(
+            @RequestHeader(
+                    name = REQUEST_ID_NAME,
+                    required = false) @ApiParam(REQUEST_ID_PARAM_DESCRIPTION) UUID requestId,
+            @ApiParam(value = "Control loop element name", required = true) @PathVariable("name") String name,
+            @ApiParam(
+                    value = "Control loop element version",
+                    required = true) @PathVariable("version") String version) {
 
+        return ResponseEntity.ok().body(getSimulationProvider().getControlLoopElements(name, version));
     }
 
     /**
@@ -128,8 +124,7 @@ public class SimulationElementController extends RestController {
      * @return a response
      */
     // @formatter:off
-    @PUT
-    @Path("/elements")
+    @PutMapping("/elements")
     @ApiOperation(
             value = "Updates simulated control loop elements",
             notes = "Updates simulated control loop elements, returning the updated control loop definition IDs",
@@ -174,22 +169,12 @@ public class SimulationElementController extends RestController {
             }
         )
     // @formatter:on
-    public Response update(@HeaderParam(REQUEST_ID_NAME) @ApiParam(REQUEST_ID_PARAM_DESCRIPTION) UUID requestId,
-            @ApiParam(value = "Body of a control loop element", required = true) ControlLoopElement body) {
-
-        try {
-            TypedSimpleResponse<ControlLoopElement> response =
-                    getSimulationProvider().updateControlLoopElement(body);
-            return addLoggingHeaders(addVersionControlHeaders(Response.status(Status.OK)), requestId).entity(response)
-                    .build();
+    public ResponseEntity<TypedSimpleResponse<ControlLoopElement>> update(
+            @RequestHeader(
+                    name = REQUEST_ID_NAME,
+                    required = false) @ApiParam(REQUEST_ID_PARAM_DESCRIPTION) UUID requestId,
+            @ApiParam(value = "Body of a control loop element", required = true) @RequestBody ControlLoopElement body) {
 
-        } catch (ControlLoopException cle) {
-            LOGGER.warn("update of control loop element failed", cle);
-            TypedSimpleResponse<ControlLoopElement> resp = new TypedSimpleResponse<>();
-            resp.setErrorDetails(cle.getErrorResponse().getErrorMessage());
-            return addLoggingHeaders(
-                    addVersionControlHeaders(Response.status(cle.getErrorResponse().getResponseCode())), requestId)
-                            .entity(resp).build();
-        }
+        return ResponseEntity.ok().body(getSimulationProvider().updateControlLoopElement(body));
     }
 }
diff --git a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/rest/SimulationParticipantController.java b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/rest/SimulationParticipantController.java
index d6ca6d0d1..715ec3410 100644
--- a/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/rest/SimulationParticipantController.java
+++ b/participant/participant-impl/participant-impl-simulator/src/main/java/org/onap/policy/clamp/controlloop/participant/simulator/simulation/rest/SimulationParticipantController.java
@@ -30,26 +30,32 @@ import io.swagger.annotations.ExtensionProperty;
 import io.swagger.annotations.ResponseHeader;
 import java.util.List;
 import java.util.UUID;
-import javax.ws.rs.GET;
-import javax.ws.rs.HeaderParam;
-import javax.ws.rs.PUT;
-import javax.ws.rs.Path;
-import javax.ws.rs.PathParam;
-import javax.ws.rs.core.Response;
-import javax.ws.rs.core.Response.Status;
-import org.onap.policy.clamp.controlloop.common.exception.ControlLoopException;
 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.Participant;
-import org.onap.policy.clamp.controlloop.models.messages.rest.SimpleResponse;
 import org.onap.policy.clamp.controlloop.models.messages.rest.TypedSimpleResponse;
-import org.onap.policy.clamp.controlloop.participant.simulator.main.rest.RestController;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import org.onap.policy.clamp.controlloop.participant.simulator.main.rest.AbstractRestController;
+import org.onap.policy.clamp.controlloop.participant.simulator.simulation.SimulationProvider;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestHeader;
+import org.springframework.web.bind.annotation.RestController;
 
 /**
  * Class to provide REST end points for participant simulator to query/update details of all participants.
  */
-public class SimulationParticipantController extends RestController {
-    private static final Logger LOGGER = LoggerFactory.getLogger(SimulationParticipantController.class);
+@RestController
+public class SimulationParticipantController extends AbstractRestController {
+
+    /**
+     * Constructor.
+     *
+     * @param simulationProvider the Simulation Provider
+     */
+    public SimulationParticipantController(SimulationProvider simulationProvider) {
+        super(simulationProvider);
+    }
 
     /**
      * Queries details of all participants within the simulator.
@@ -60,8 +66,7 @@ public class SimulationParticipantController extends RestController {
      * @return the participants
      */
     // @formatter:off
-    @GET
-    @Path("/participants/{name}/{version}")
+    @GetMapping("/participants/{name}/{version}")
     @ApiOperation(value = "Query details of the requested simulated participants",
             notes = "Queries details of the requested simulated participants, "
                     + "returning all participant details",
@@ -98,24 +103,14 @@ public class SimulationParticipantController extends RestController {
             }
     )
     // @formatter:on
-    public Response participants(@HeaderParam(REQUEST_ID_NAME) @ApiParam(REQUEST_ID_PARAM_DESCRIPTION) UUID requestId,
-            @ApiParam(value = "Participant name", required = true) @PathParam("name") String name,
-            @ApiParam(value = "Participant version", required = true) @PathParam("version") String version) {
-
-        try {
-            List<Participant> response = getSimulationProvider().getParticipants(name, version);
-            return addLoggingHeaders(addVersionControlHeaders(Response.status(Status.OK)), requestId).entity(response)
-                    .build();
-
-        } catch (ControlLoopException cle) {
-            LOGGER.warn("get of participants failed", cle);
-            SimpleResponse resp = new SimpleResponse();
-            resp.setErrorDetails(cle.getErrorResponse().getErrorMessage());
-            return addLoggingHeaders(
-                    addVersionControlHeaders(Response.status(cle.getErrorResponse().getResponseCode())), requestId)
-                            .entity(resp).build();
-        }
+    public ResponseEntity<List<Participant>> participants(
+            @RequestHeader(
+                    name = REQUEST_ID_NAME,
+                    required = false) @ApiParam(REQUEST_ID_PARAM_DESCRIPTION) UUID requestId,
+            @ApiParam(value = "Participant name", required = true) @PathVariable("name") String name,
+            @ApiParam(value = "Participant version", required = true) @PathVariable("version") String version) {
 
+        return ResponseEntity.ok().body(getSimulationProvider().getParticipants(name, version));
     }
 
     /**
@@ -126,8 +121,7 @@ public class SimulationParticipantController extends RestController {
      * @return a response
      */
     // @formatter:off
-    @PUT
-    @Path("/participants")
+    @PutMapping("/participants")
     @ApiOperation(
             value = "Updates simulated participants",
             notes = "Updates simulated participants, returning the updated control loop definition IDs",
@@ -172,21 +166,12 @@ public class SimulationParticipantController extends RestController {
             }
         )
     // @formatter:on
-    public Response update(@HeaderParam(REQUEST_ID_NAME) @ApiParam(REQUEST_ID_PARAM_DESCRIPTION) UUID requestId,
-            @ApiParam(value = "Body of a participant", required = true) Participant body) {
-
-        try {
-            TypedSimpleResponse<Participant> response = getSimulationProvider().updateParticipant(body);
-            return addLoggingHeaders(addVersionControlHeaders(Response.status(Status.OK)), requestId).entity(response)
-                    .build();
+    public ResponseEntity<TypedSimpleResponse<Participant>> update(
+            @RequestHeader(
+                    name = REQUEST_ID_NAME,
+                    required = false) @ApiParam(REQUEST_ID_PARAM_DESCRIPTION) UUID requestId,
+            @ApiParam(value = "Body of a participant", required = true) @RequestBody Participant body) {
 
-        } catch (ControlLoopException cle) {
-            LOGGER.warn("update of participant failed", cle);
-            TypedSimpleResponse<Participant> resp = new TypedSimpleResponse<>();
-            resp.setErrorDetails(cle.getErrorResponse().getErrorMessage());
-            return addLoggingHeaders(
-                    addVersionControlHeaders(Response.status(cle.getErrorResponse().getResponseCode())), requestId)
-                            .entity(resp).build();
-        }
+        return ResponseEntity.ok().body(getSimulationProvider().updateParticipant(body));
     }
 }