SO changes for Service Intent

This update contains the SO changes for the CCVPN extension to
support Intent Based Networking (REQ-719). The SO is responsible
for providing the Service Intent orchestration, as well as providing
the Service Intent APIs which are consumed by the IBN use-case.

The changes on the SO are technology-agnostic and are relatively
simple. i.e., Technology specific network configurations are carried
out by the SDNC.

Issue-ID: SO-3714
Signed-off-by: hyu2010 <hyu2010b@gmail.com>
Change-Id: Iec9d2fc80adc79faaeeaf811bd0d02c9d7611d61
Signed-off-by: hyu2010 <hyu2010b@gmail.com>

6 files changed, 705 insertions, 0 deletions

diff --git a/mso-api-handlers/mso-api-handler-infra/src/main/java/org/onap/so/apihandlerinfra/JerseyConfiguration.java b/mso-api-handlers/mso-api-handler-infra/src/main/java/org/onap/so/apihandlerinfra/JerseyConfiguration.java
index d69c395f96..031e9eee2a 100644
--- a/mso-api-handlers/mso-api-handler-infra/src/main/java/org/onap/so/apihandlerinfra/JerseyConfiguration.java
+++ b/mso-api-handlers/mso-api-handler-infra/src/main/java/org/onap/so/apihandlerinfra/JerseyConfiguration.java
@@ -65,6 +65,7 @@ public class JerseyConfiguration extends ResourceConfig {
         register(NodeHealthcheckHandler.class);
         register(ServiceInstances.class);
         register(Onap3gppServiceInstances.class);
+        register(ServiceIntentApiHandler.class);
         register(TasksHandler.class);
         register(CloudOrchestration.class);
         register(CloudResourcesOrchestration.class);
diff --git a/mso-api-handlers/mso-api-handler-infra/src/main/java/org/onap/so/apihandlerinfra/ServiceIntentApiHandler.java b/mso-api-handlers/mso-api-handler-infra/src/main/java/org/onap/so/apihandlerinfra/ServiceIntentApiHandler.java
new file mode 100644
index 0000000000..be63c5fb9a
--- /dev/null
+++ b/mso-api-handlers/mso-api-handler-infra/src/main/java/org/onap/so/apihandlerinfra/ServiceIntentApiHandler.java
@@ -0,0 +1,431 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - SO
+ * ================================================================================
+ * Copyright (C) 2021 Huawei Technologies.
+ * ================================================================================
+ * 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.so.apihandlerinfra;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import io.swagger.v3.oas.annotations.OpenAPIDefinition;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.info.Info;
+import io.swagger.v3.oas.annotations.media.ArraySchema;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.Schema;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import org.apache.http.HttpStatus;
+import org.onap.logging.filter.base.ErrorCode;
+import org.onap.so.apihandler.camundabeans.CamundaResponse;
+import org.onap.so.apihandler.common.CamundaClient;
+import org.onap.so.apihandler.common.ErrorNumbers;
+import org.onap.so.apihandler.common.RequestClientParameter;
+import org.onap.so.apihandler.common.ResponseBuilder;
+import org.onap.so.apihandler.common.ResponseHandler;
+import org.onap.so.apihandlerinfra.exceptions.ApiException;
+import org.onap.so.apihandlerinfra.exceptions.BPMNFailureException;
+import org.onap.so.apihandlerinfra.exceptions.RequestDbFailureException;
+import org.onap.so.apihandlerinfra.exceptions.ValidateException;
+import org.onap.so.apihandlerinfra.logging.ErrorLoggerInfo;
+import org.onap.so.apihandlerinfra.serviceintentinstancebeans.ServiceIntentCommonRequest;
+import org.onap.so.apihandlerinfra.serviceintentinstancebeans.ServiceIntentCreationRequest;
+import org.onap.so.apihandlerinfra.serviceintentinstancebeans.ServiceIntentDeletionRequest;
+import org.onap.so.apihandlerinfra.serviceintentinstancebeans.ServiceIntentModificationRequest;
+import org.onap.so.constants.Status;
+import org.onap.so.db.catalog.beans.Service;
+import org.onap.so.db.catalog.beans.ServiceRecipe;
+import org.onap.so.db.catalog.client.CatalogDbClient;
+import org.onap.so.db.request.beans.InfraActiveRequests;
+import org.onap.so.db.request.client.RequestsDbClient;
+import org.onap.so.logger.LogConstants;
+import org.onap.so.logger.LoggingAnchor;
+import org.onap.so.logger.MessageEnum;
+import org.onap.so.serviceinstancebeans.ModelType;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.slf4j.MDC;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Component;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.POST;
+import javax.ws.rs.PUT;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.container.ContainerRequestContext;
+import javax.ws.rs.core.Context;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import java.sql.Timestamp;
+import java.util.HashMap;
+import java.util.function.Function;
+
+/**
+ * This class serves as the entry point for Service Intent APIs. Unlike User Intent, which describes Intent using
+ * natural languages, Service Intent describes Intent through technology-agnostic and model-driven APIs. The Service
+ * Intent APIs have the following format: {service-Intent-Root}/{operation}, where {operation} may be "create",
+ * "delete", "modify", etc. And the parameters of the Intent service instance are specified in the payloads of the APIs.
+ * <p>
+ * For scalability, these APIs are designed to be generic, and thus support all the service Intent use-cases. i.e., The
+ * actual intent use-case/application, e.g., Cloud Leased Line, is differentiated by the "serviceType" parameter in the
+ * payload, rather than by specific APIs. Thus, this class does not need to grow when we add new Intent use-cases or
+ * applications.
+ * <p>
+ */
+@Component
+@Path("/onap/so/infra/serviceIntent")
+@OpenAPIDefinition(info = @Info(title = "/onap/so/infra/serviceIntent",
+        description = "API Requests for Intent services and " + "applications"))
+public class ServiceIntentApiHandler {
+
+    private static final Logger logger = LoggerFactory.getLogger(ServiceIntentApiHandler.class);
+
+    private static final String MSO_PROP_APIHANDLER_INFRA = "MSO_PROP_APIHANDLER_INFRA";
+
+    private static final String END_OF_THE_TRANSACTION = "End of the transaction, the final response is: ";
+
+    private static final String SAVE_TO_DB = "save instance to db";
+
+    private static final String URI_PREFIX = "/serviceIntent/";
+
+    @Autowired
+    private MsoRequest msoRequest;
+
+    @Autowired
+    private CatalogDbClient catalogDbClient;
+
+    @Autowired
+    private RequestsDbClient requestsDbClient;
+
+    @Autowired
+    private RequestHandlerUtils requestHandlerUtils;
+
+    @Autowired
+    private ResponseBuilder builder;
+
+    @Autowired
+    private CamundaClient camundaClient;
+
+    @Autowired
+    private ResponseHandler responseHandler;
+
+    // @Value("${serviceIntent.config.file}")
+    // private String serviceIntentConfigFile;
+
+    /**
+     * POST Requests for create Service Intent Instance on a version provided
+     *
+     * @throws ApiException
+     */
+
+    @POST
+    @Path("/{version:[vV][1]}/create")
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
+    @Operation(description = "Create a SI Instance on a version provided", responses = @ApiResponse(
+            content = @Content(array = @ArraySchema(schema = @Schema(implementation = Response.class)))))
+    public Response createServiceIntentInstance(ServiceIntentCreationRequest request,
+            @PathParam("version") String version, @Context ContainerRequestContext requestContext) throws ApiException {
+        String requestId = requestHandlerUtils.getRequestId(requestContext);
+        return processServiceIntentRequest(request, Action.createInstance, version, requestId, null,
+                requestHandlerUtils.getRequestUri(requestContext, URI_PREFIX));
+    }
+
+    /**
+     * PUT Requests for Service Intent Modification on a version provided
+     *
+     * @throws ApiException
+     */
+
+    @PUT
+    @Path("/{version:[vV][1]}/modify")
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
+    @Operation(description = "Modify a SI Instance on a version provided", responses = @ApiResponse(
+            content = @Content(array = @ArraySchema(schema = @Schema(implementation = Response.class)))))
+    public Response modifyServiceIntentInstance(ServiceIntentModificationRequest request,
+            @PathParam("version") String version, @Context ContainerRequestContext requestContext) throws ApiException {
+        String requestId = requestHandlerUtils.getRequestId(requestContext);
+        HashMap<String, String> instanceIdMap = new HashMap<>();
+        instanceIdMap.put("serviceInstanceId", request.getServiceInstanceID());
+        return processServiceIntentRequest(request, Action.updateInstance, version, requestId, instanceIdMap,
+                requestHandlerUtils.getRequestUri(requestContext, URI_PREFIX));
+    }
+
+    /**
+     * DELETE Requests for Service Intent Instance on a specified version
+     *
+     * @throws ApiException
+     */
+
+    @DELETE
+    @Path("/{version:[vV][1]}/delete")
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
+    @Operation(description = "Terminate/Delete a SI Service Instance on a version provided", responses = @ApiResponse(
+            content = @Content(array = @ArraySchema(schema = @Schema(implementation = Response.class)))))
+    public Response deleteServiceIntentInstance(ServiceIntentDeletionRequest request,
+            @PathParam("version") String version, @Context ContainerRequestContext requestContext) throws ApiException {
+        String requestId = requestHandlerUtils.getRequestId(requestContext);
+        HashMap<String, String> instanceIdMap = new HashMap<>();
+        instanceIdMap.put("serviceInstanceId", request.getServiceInstanceID());
+        return processServiceIntentRequest(request, Action.deleteInstance, version, requestId, instanceIdMap,
+                requestHandlerUtils.getRequestUri(requestContext, URI_PREFIX));
+    }
+
+    /**
+     * Process Service Intent request and send request to corresponding workflow
+     *
+     * @param request
+     * @param action
+     * @param version
+     * @return
+     * @throws ApiException
+     */
+    private Response processServiceIntentRequest(ServiceIntentCommonRequest request, Action action, String version,
+            String requestId, HashMap<String, String> instanceIdMap, String requestUri) throws ApiException {
+        String defaultServiceModelName = "COMMON_SI_DEFAULT";
+        String requestScope = ModelType.service.name();
+        String apiVersion = version.substring(1);
+        String serviceRequestJson = toString.apply(request);
+
+        String instanceName = null;
+        String modelUuid = null;
+        String serviceInstanceId = null;
+
+        try {
+            if (action == Action.createInstance) {
+                instanceName = ((ServiceIntentCreationRequest) request).getName();
+                modelUuid = ((ServiceIntentCreationRequest) request).getModelUuid();
+            } else if (action == Action.updateInstance) {
+                instanceName = ((ServiceIntentModificationRequest) request).getName();
+                serviceInstanceId = ((ServiceIntentModificationRequest) request).getServiceInstanceID();
+            } else if (action == Action.deleteInstance) {
+                serviceInstanceId = ((ServiceIntentDeletionRequest) request).getServiceInstanceID();
+            }
+        } catch (Exception e) {
+            logger.error("ERROR: processCllServiceRequest: Exception: ", e);
+            Response response = msoRequest.buildServiceErrorResponse(HttpStatus.SC_INTERNAL_SERVER_ERROR,
+                    MsoException.ServiceException, "processCllServiceRequest error", ErrorNumbers.SVC_BAD_PARAMETER,
+                    null, version);
+            return response;
+        }
+
+        if (serviceRequestJson != null) {
+            InfraActiveRequests currentActiveReq = createRequestObject(request, action, requestId, Status.IN_PROGRESS,
+                    requestScope, serviceRequestJson);
+
+            requestHandlerUtils.checkForDuplicateRequests(action, instanceIdMap, requestScope, currentActiveReq,
+                    instanceName);
+            try {
+                requestsDbClient.save(currentActiveReq);
+            } catch (Exception e) {
+                logger.error("Exception occurred", e);
+                ErrorLoggerInfo errorLoggerInfo =
+                        new ErrorLoggerInfo.Builder(MessageEnum.APIH_DB_ACCESS_EXC, ErrorCode.DataError)
+                                .errorSource(Constants.MSO_PROP_APIHANDLER_INFRA).build();
+                throw new RequestDbFailureException.Builder(SAVE_TO_DB, e.toString(),
+                        HttpStatus.SC_INTERNAL_SERVER_ERROR, ErrorNumbers.SVC_DETAILED_SERVICE_ERROR).cause(e)
+                                .errorInfo(errorLoggerInfo).build();
+            }
+
+            RecipeLookupResult recipeLookupResult;
+            try {
+                recipeLookupResult = getServiceInstanceOrchestrationURI(modelUuid, action, defaultServiceModelName);
+            } catch (Exception e) {
+                logger.error(LoggingAnchor.FOUR, MessageEnum.APIH_DB_ACCESS_EXC.toString(), MSO_PROP_APIHANDLER_INFRA,
+                        ErrorCode.AvailabilityError.getValue(), "Exception while communicate with Catalog DB", e);
+                Response response = msoRequest.buildServiceErrorResponse(HttpStatus.SC_NOT_FOUND,
+                        MsoException.ServiceException, "No " + "communication to catalog DB " + e.getMessage(),
+                        ErrorNumbers.SVC_NO_SERVER_RESOURCES, null, version);
+                logger.debug(END_OF_THE_TRANSACTION + response.getEntity());
+                return response;
+            }
+
+            if (recipeLookupResult == null) {
+                logger.error(LoggingAnchor.FOUR, MessageEnum.APIH_DB_ATTRIBUTE_NOT_FOUND.toString(),
+                        MSO_PROP_APIHANDLER_INFRA, ErrorCode.DataError.getValue(), "No recipe found in DB");
+                Response response = msoRequest.buildServiceErrorResponse(HttpStatus.SC_NOT_FOUND,
+                        MsoException.ServiceException, "Recipe does " + "not exist in catalog DB",
+                        ErrorNumbers.SVC_GENERAL_SERVICE_ERROR, null, version);
+                logger.debug(END_OF_THE_TRANSACTION + response.getEntity());
+                return response;
+            }
+
+            String serviceInstanceType = request.getSubscriptionServiceType();
+            RequestClientParameter parameter;
+            try {
+                parameter = new RequestClientParameter.Builder().setRequestId(requestId).setBaseVfModule(false)
+                        .setRecipeTimeout(recipeLookupResult.getRecipeTimeout()).setRequestAction(action.name())
+                        .setServiceInstanceId(serviceInstanceId).setServiceType(serviceInstanceType)
+                        .setRequestDetails(serviceRequestJson).setApiVersion(version).setALaCarte(false)
+                        .setRecipeParamXsd(recipeLookupResult.getRecipeParamXsd()).setApiVersion(apiVersion).build();
+            } catch (Exception e) {
+                logger.error("Exception occurred", e);
+                ErrorLoggerInfo errorLoggerInfo =
+                        new ErrorLoggerInfo.Builder(MessageEnum.APIH_BPEL_RESPONSE_ERROR, ErrorCode.SchemaError)
+                                .errorSource(Constants.MSO_PROP_APIHANDLER_INFRA).build();
+                throw new ValidateException.Builder("Unable to generate RequestClientParameter object" + e.getMessage(),
+                        HttpStatus.SC_INTERNAL_SERVER_ERROR, ErrorNumbers.SVC_BAD_PARAMETER).errorInfo(errorLoggerInfo)
+                                .build();
+            }
+            return postBPELRequest(currentActiveReq, parameter, recipeLookupResult.getOrchestrationURI(), requestScope);
+        } else {
+            Response response = msoRequest.buildServiceErrorResponse(HttpStatus.SC_INTERNAL_SERVER_ERROR,
+                    MsoException.ServiceException, "JsonProcessingException occurred - " + "serviceRequestJson is null",
+                    ErrorNumbers.SVC_BAD_PARAMETER, null, version);
+            return response;
+        }
+    }
+
+    /**
+     * Getting recipes from catalogDb
+     *
+     * @param serviceModelUUID the service model version uuid
+     * @param action the action for the service
+     * @param defaultServiceModelName default service name
+     * @return the service recipe result
+     */
+    private RecipeLookupResult getServiceInstanceOrchestrationURI(String serviceModelUUID, Action action,
+            String defaultServiceModelName) {
+
+        RecipeLookupResult recipeLookupResult = getServiceURI(serviceModelUUID, action, defaultServiceModelName);
+
+        if (recipeLookupResult != null) {
+            logger.debug("Orchestration URI is: " + recipeLookupResult.getOrchestrationURI() + ", recipe Timeout is: "
+                    + Integer.toString(recipeLookupResult.getRecipeTimeout()));
+        } else {
+            logger.debug("No matching recipe record found");
+        }
+        return recipeLookupResult;
+    }
+
+    /**
+     * Getting recipes from catalogDb If Service recipe is not set, use default recipe, if set , use special recipe.
+     *
+     * @param serviceModelUUID the service version uuid
+     * @param action the action of the service.
+     * @param defaultServiceModelName default service name
+     * @return the service recipe result.
+     */
+    private RecipeLookupResult getServiceURI(String serviceModelUUID, Action action, String defaultServiceModelName) {
+
+        Service defaultServiceRecord =
+                catalogDbClient.getFirstByModelNameOrderByModelVersionDesc(defaultServiceModelName);
+        // set recipe as default generic recipe
+        ServiceRecipe recipe =
+                catalogDbClient.getFirstByServiceModelUUIDAndAction(defaultServiceRecord.getModelUUID(), action.name());
+        // check the service special recipe
+        if (null != serviceModelUUID && !serviceModelUUID.isEmpty()) {
+            ServiceRecipe serviceSpecialRecipe =
+                    catalogDbClient.getFirstByServiceModelUUIDAndAction(serviceModelUUID, action.name());
+            if (null != serviceSpecialRecipe) {
+                // set service special recipe.
+                recipe = serviceSpecialRecipe;
+            }
+        }
+
+        if (recipe == null) {
+            return null;
+        }
+        return new RecipeLookupResult(recipe.getOrchestrationUri(), recipe.getRecipeTimeout(), recipe.getParamXsd());
+
+    }
+
+    Function<Object, String> toString = serviceRequest -> {
+        ObjectMapper mapper = new ObjectMapper();
+        String requestAsString = null;
+        try {
+            requestAsString = mapper.writeValueAsString(serviceRequest);
+        } catch (JsonProcessingException e) {
+            logger.debug("Exception while converting service request object to String {}", e);
+        }
+        return requestAsString;
+    };
+
+    private InfraActiveRequests createRequestObject(ServiceIntentCommonRequest request, Action action, String requestId,
+            Status status, String requestScope, String requestJson) {
+        InfraActiveRequests aq = new InfraActiveRequests();
+        try {
+            String serviceInstanceName = null;
+            String serviceInstanceId = null;
+            String serviceType = request.getServiceType();
+            if (action.name().equals("createInstance")) {
+                serviceInstanceName = ((ServiceIntentCreationRequest) request).getName();
+                aq.setServiceInstanceName(serviceInstanceName);
+            } else if (action.name().equals("updateInstance")) {
+                serviceInstanceName = ((ServiceIntentModificationRequest) request).getName();
+                serviceInstanceId = ((ServiceIntentModificationRequest) request).getServiceInstanceID();
+                aq.setServiceInstanceName(serviceInstanceName);
+                aq.setServiceInstanceId(serviceInstanceId);
+            } else if (action.name().equals("deleteInstance")) {
+                serviceInstanceId = ((ServiceIntentDeletionRequest) request).getServiceInstanceID();
+                aq.setServiceInstanceId(serviceInstanceId);
+            }
+
+            aq.setRequestId(requestId);
+            aq.setRequestAction(action.toString());
+            aq.setRequestUrl(MDC.get(LogConstants.HTTP_URL));
+            Timestamp startTimeStamp = new Timestamp(System.currentTimeMillis());
+            aq.setStartTime(startTimeStamp);
+            aq.setRequestScope(requestScope);
+            aq.setRequestBody(requestJson);
+            aq.setRequestStatus(status.toString());
+            aq.setLastModifiedBy(Constants.MODIFIED_BY_APIHANDLER);
+            aq.setServiceType(serviceType);
+        } catch (Exception e) {
+            logger.error("Exception when creation record request", e);
+
+            if (!status.equals(Status.FAILED)) {
+                throw e;
+            }
+        }
+        return aq;
+    }
+
+    private Response postBPELRequest(InfraActiveRequests currentActiveReq, RequestClientParameter parameter,
+            String orchestrationURI, String requestScope) throws ApiException {
+        ResponseEntity<String> response =
+                requestHandlerUtils.postRequest(currentActiveReq, parameter, orchestrationURI);
+        logger.debug("BPEL response : " + response);
+        int bpelStatus = responseHandler.setStatus(response.getStatusCodeValue());
+        String jsonResponse;
+        try {
+            responseHandler.acceptedResponse(response);
+            CamundaResponse camundaResponse = responseHandler.getCamundaResponse(response);
+            String responseBody = camundaResponse.getResponse();
+            if ("Success".equalsIgnoreCase(camundaResponse.getMessage())) {
+                jsonResponse = responseBody;
+            } else {
+                BPMNFailureException bpmnException =
+                        new BPMNFailureException.Builder(String.valueOf(bpelStatus) + responseBody, bpelStatus,
+                                ErrorNumbers.SVC_DETAILED_SERVICE_ERROR).build();
+                requestHandlerUtils.updateStatus(currentActiveReq, Status.FAILED, bpmnException.getMessage());
+                throw bpmnException;
+            }
+        } catch (ApiException e) {
+            requestHandlerUtils.updateStatus(currentActiveReq, Status.FAILED, e.getMessage());
+            throw e;
+        }
+        return builder.buildResponse(HttpStatus.SC_ACCEPTED, parameter.getRequestId(), jsonResponse,
+                parameter.getApiVersion());
+    }
+}
diff --git a/mso-api-handlers/mso-api-handler-infra/src/main/java/org/onap/so/apihandlerinfra/serviceintentinstancebeans/ServiceIntentCommonRequest.java b/mso-api-handlers/mso-api-handler-infra/src/main/java/org/onap/so/apihandlerinfra/serviceintentinstancebeans/ServiceIntentCommonRequest.java
new file mode 100644
index 0000000000..f27f88c428
--- /dev/null
+++ b/mso-api-handlers/mso-api-handler-infra/src/main/java/org/onap/so/apihandlerinfra/serviceintentinstancebeans/ServiceIntentCommonRequest.java
@@ -0,0 +1,83 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - SO
+ * ================================================================================
+ * Copyright (C) 2020 Huawei Technologies.
+ * ================================================================================
+ * 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.so.apihandlerinfra.serviceintentinstancebeans;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Model class for common parameter of Service Intent request
+ */
+public class ServiceIntentCommonRequest {
+
+    @JsonProperty("globalSubscriberId")
+    private String globalSubscriberId;
+
+    @JsonProperty("subscriptionServiceType")
+    private String subscriptionServiceType;
+
+    @JsonProperty("additionalProperties")
+    private Map<String, Object> additionalProperties = new HashMap<>();
+
+    @JsonProperty("serviceType")
+    private String serviceType;
+
+    public String getGlobalSubscriberId() {
+        return globalSubscriberId;
+    }
+
+    public void setGlobalSubscriberId(String globalSubscriberId) {
+        this.globalSubscriberId = globalSubscriberId;
+    }
+
+    public String getSubscriptionServiceType() {
+        return subscriptionServiceType;
+    }
+
+    public void setSubscriptionServiceType(String subscriptionServiceType) {
+        this.subscriptionServiceType = subscriptionServiceType;
+    }
+
+    public Map<String, Object> getAdditionalProperties() {
+        return additionalProperties;
+    }
+
+    public void setAdditionalProperties(Map<String, Object> additionalProperties) {
+        this.additionalProperties = additionalProperties;
+    }
+
+    public String getServiceType() {
+        return serviceType;
+    }
+
+    public void setServiceType(String serviceType) {
+        this.serviceType = serviceType;
+    }
+
+    @Override
+    public String toString() {
+        return "ServiceIntentCommonRequest [globalSubscriberId=" + globalSubscriberId + ", subscriptionServiceType="
+                + subscriptionServiceType + ", serviceType=" + serviceType + ", additionalProperties="
+                + additionalProperties + "]";
+    }
+
+}
diff --git a/mso-api-handlers/mso-api-handler-infra/src/main/java/org/onap/so/apihandlerinfra/serviceintentinstancebeans/ServiceIntentCreationRequest.java b/mso-api-handlers/mso-api-handler-infra/src/main/java/org/onap/so/apihandlerinfra/serviceintentinstancebeans/ServiceIntentCreationRequest.java
new file mode 100644
index 0000000000..bc711a00dc
--- /dev/null
+++ b/mso-api-handlers/mso-api-handler-infra/src/main/java/org/onap/so/apihandlerinfra/serviceintentinstancebeans/ServiceIntentCreationRequest.java
@@ -0,0 +1,82 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - SO
+ * ================================================================================
+ * Copyright (C) 2020 Huawei Technologies.
+ * ================================================================================
+ * 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.so.apihandlerinfra.serviceintentinstancebeans;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Model class for Service Intent Creation request
+ */
+public class ServiceIntentCreationRequest extends ServiceIntentCommonRequest {
+
+    @JsonProperty("name")
+    private String name;
+
+    @JsonProperty("modelInvariantUuid")
+    private String modelInvariantUuid;
+
+    @JsonProperty("modelUuid")
+    private String modelUuid;
+
+    @JsonProperty("sst")
+    private String sST;
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getModelInvariantUuid() {
+        return modelInvariantUuid;
+    }
+
+    public void setModelInvariantUuid(String modelInvariantUuid) {
+        this.modelInvariantUuid = modelInvariantUuid;
+    }
+
+    public String getModelUuid() {
+        return modelUuid;
+    }
+
+    public void setModelUuid(String modelUuid) {
+        this.modelUuid = modelUuid;
+    }
+
+    public String getsST() {
+        return sST;
+    }
+
+    public void setsST(String sST) {
+        this.sST = sST;
+    }
+
+    @Override
+    public String toString() {
+        return "ServiceIntentCreationRequest [name=" + name + ", modelInvariantUuid=" + modelInvariantUuid
+                + ", modelUuid=" + modelUuid + ", globalSubscriberId=" + getGlobalSubscriberId()
+                + ", subscriptionServiceType=" + getSubscriptionServiceType() + ", serviceType=" + getServiceType()
+                + ", additionalProperties=" + getAdditionalProperties() + "]";
+    }
+
+}
diff --git a/mso-api-handlers/mso-api-handler-infra/src/main/java/org/onap/so/apihandlerinfra/serviceintentinstancebeans/ServiceIntentDeletionRequest.java b/mso-api-handlers/mso-api-handler-infra/src/main/java/org/onap/so/apihandlerinfra/serviceintentinstancebeans/ServiceIntentDeletionRequest.java
new file mode 100644
index 0000000000..c463c7bae4
--- /dev/null
+++ b/mso-api-handlers/mso-api-handler-infra/src/main/java/org/onap/so/apihandlerinfra/serviceintentinstancebeans/ServiceIntentDeletionRequest.java
@@ -0,0 +1,48 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - SO
+ * ================================================================================
+ * Copyright (C) 2020 Huawei Technologies.
+ * ================================================================================
+ * 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.so.apihandlerinfra.serviceintentinstancebeans;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Model class for service intent instance terminate request
+ */
+public class ServiceIntentDeletionRequest extends ServiceIntentCommonRequest {
+
+    @JsonProperty("serviceInstanceID")
+    private String serviceInstanceID;
+
+    public String getServiceInstanceID() {
+        return serviceInstanceID;
+    }
+
+    public void setServiceInstanceID(String serviceInstanceID) {
+        this.serviceInstanceID = serviceInstanceID;
+    }
+
+    @Override
+    public String toString() {
+        return "ServiceIntentDeletionRequest [serviceInstanceID=" + getServiceInstanceID() + ", globalSubscriberId="
+                + getGlobalSubscriberId() + ", subscriptionServiceType=" + getSubscriptionServiceType()
+                + ", serviceType=" + getServiceType() + ", additionalProperties=" + getAdditionalProperties() + "]";
+    }
+
+}
diff --git a/mso-api-handlers/mso-api-handler-infra/src/main/java/org/onap/so/apihandlerinfra/serviceintentinstancebeans/ServiceIntentModificationRequest.java b/mso-api-handlers/mso-api-handler-infra/src/main/java/org/onap/so/apihandlerinfra/serviceintentinstancebeans/ServiceIntentModificationRequest.java
new file mode 100644
index 0000000000..17d6dc84ab
--- /dev/null
+++ b/mso-api-handlers/mso-api-handler-infra/src/main/java/org/onap/so/apihandlerinfra/serviceintentinstancebeans/ServiceIntentModificationRequest.java
@@ -0,0 +1,60 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - SO
+ * ================================================================================
+ * Copyright (C) 2021 Huawei Technologies.
+ * ================================================================================
+ * 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.so.apihandlerinfra.serviceintentinstancebeans;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Model class for Service Intent Update request
+ */
+public class ServiceIntentModificationRequest extends ServiceIntentCommonRequest {
+
+    @JsonProperty("name")
+    private String name;
+
+    @JsonProperty("serviceInstanceID")
+    private String serviceInstanceID;
+
+    public String getServiceInstanceID() {
+        return serviceInstanceID;
+    }
+
+    public void setServiceInstanceID(String serviceInstanceID) {
+        this.serviceInstanceID = serviceInstanceID;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public String toString() {
+        return "ServiceIntentModificationRequest [name=" + name + ", serviceInstanceID=" + getServiceInstanceID()
+                + ", globalSubscriberId=" + getGlobalSubscriberId() + ", subscriptionServiceType="
+                + getSubscriptionServiceType() + ", serviceType=" + getServiceType() + ", additionalProperties="
+                + getAdditionalProperties() + "]";
+    }
+
+}