Enhance Activity Spec Update error messages

Updating error messages

Change-Id: I5660e5ba773141db3df440eb94e0b6aa521dbc73
Issue-ID: SDC-1048
Signed-off-by: shrikantawachar <shrikant.awachar@amdocs.com>

1 files changed, 98 insertions, 0 deletions

diff --git a/services/activity-spec/activity-spec-web/activity-spec-service/src/main/java/org/openecomp/activityspec/errors/DefaultExceptionMapper.java b/services/activity-spec/activity-spec-web/activity-spec-service/src/main/java/org/openecomp/activityspec/errors/DefaultExceptionMapper.java
new file mode 100644
index 0000000000..e95953bd56
--- /dev/null
+++ b/services/activity-spec/activity-spec-web/activity-spec-service/src/main/java/org/openecomp/activityspec/errors/DefaultExceptionMapper.java
@@ -0,0 +1,98 @@
+/*
+ * Copyright © 2016-2018 European Support Limited
+ *
+ * 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.
+ */
+
+package org.openecomp.activityspec.errors;
+
+import java.util.Set;
+import javax.validation.ConstraintViolation;
+import javax.validation.ConstraintViolationException;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.Response.Status;
+import javax.ws.rs.ext.ExceptionMapper;
+import org.codehaus.jackson.map.JsonMappingException;
+import org.hibernate.validator.internal.engine.path.PathImpl;
+import org.openecomp.sdc.common.errors.CoreException;
+import org.openecomp.sdc.logging.api.Logger;
+import org.openecomp.sdc.logging.api.LoggerFactory;
+
+public class DefaultExceptionMapper implements ExceptionMapper<Exception> {
+
+  private static final Logger LOGGER = LoggerFactory.getLogger(DefaultExceptionMapper.class);
+
+  @Override
+  public Response toResponse(Exception exception) {
+    Response response;
+    if (exception instanceof CoreException) {
+      response = transform(CoreException.class.cast(exception));
+    } else if (exception instanceof ConstraintViolationException) {
+      response = transform(ConstraintViolationException.class.cast(exception));
+    } else if (exception instanceof JsonMappingException) {
+      response = transform(JsonMappingException.class.cast(exception));
+    } else {
+      response = transform(exception);
+    }
+
+    return response;
+  }
+
+  private Response transform(CoreException coreException) {
+    LOGGER.error("Transforming CoreException to Error Response  :", coreException);
+    return generateResponse(Status.EXPECTATION_FAILED, new ActivitySpecErrorResponse(Status.EXPECTATION_FAILED, coreException.code().id(),
+        coreException.getMessage()) );
+  }
+
+  private Response transform(ConstraintViolationException validationException) {
+    LOGGER.error("Transforming ConstraintViolationException to Error Response :",
+        validationException);
+    Set<ConstraintViolation<?>> constraintViolationSet = validationException
+        .getConstraintViolations();
+    String message;
+
+    String fieldName = null;
+    if (constraintViolationSet != null) {
+      // getting the first violation message for the output response.
+      ConstraintViolation<?> constraintViolation = constraintViolationSet.iterator().next();
+      message = constraintViolation.getMessage();
+      fieldName = ((PathImpl) constraintViolation.getPropertyPath()).getLeafNode().toString();
+
+    } else {
+      message = validationException.getMessage();
+    }
+    return generateResponse(Status.EXPECTATION_FAILED, new ActivitySpecErrorResponse(Status.EXPECTATION_FAILED,
+        "FIELD_VALIDATION_ERROR_ERR_ID",
+        String.format(message,fieldName)));
+    }
+
+  private Response transform(Exception exception) {
+    LOGGER.error("Transforming Exception to Error Response " + exception);
+    return generateResponse(Status.INTERNAL_SERVER_ERROR, new ActivitySpecErrorResponse(Status.INTERNAL_SERVER_ERROR,
+        "GENERAL_ERROR_REST_ID",
+        "An error has occurred: " + exception.getMessage()));
+  }
+
+  private Response transform(JsonMappingException jsonMappingException) {
+    LOGGER.error("Transforming JsonMappingException to Error Response " + jsonMappingException);
+    return generateResponse(Status.EXPECTATION_FAILED, new ActivitySpecErrorResponse(Status.EXPECTATION_FAILED,"JSON_MAPPING_ERROR_ERR_ID",
+        "Invalid Json Input"));
+  }
+
+  private Response generateResponse(Response.Status status, ActivitySpecErrorResponse
+      activitySpecErrorResponse) {
+    return Response.status(status).entity(activitySpecErrorResponse).type(MediaType
+        .APPLICATION_JSON).build();
+  }
+}