NSSMF adapter utils

Adding utils to NSSMF adapter

Change-Id: If02c9503189dbbb5cfdd74b6422d4ff4ffba739c
Issue-ID: SO-2544
Signed-off-by: jananib <janani.b@huawei.com>

2 files changed, 160 insertions, 0 deletions

diff --git a/adapters/mso-nssmf-adapter/src/main/java/org/onap/so/adapters/nssmf/exceptions/ApplicationException.java b/adapters/mso-nssmf-adapter/src/main/java/org/onap/so/adapters/nssmf/exceptions/ApplicationException.java
new file mode 100644
index 0000000000..f63ba356a1
--- /dev/null
+++ b/adapters/mso-nssmf-adapter/src/main/java/org/onap/so/adapters/nssmf/exceptions/ApplicationException.java
@@ -0,0 +1,66 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - SO
+ * ================================================================================
+ * Copyright (C) 2020 Huawei Technologies Co., Ltd. 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.so.adapters.nssmf.exceptions;
+
+import org.onap.so.adapters.nssmf.model.ErrorResponse;
+import org.springframework.http.ResponseEntity;
+import static org.onap.so.adapters.nssmf.util.NssmfAdapterUtil.marshal;
+
+public class ApplicationException extends Exception {
+
+    private static final long serialVersionUID = 1L;
+
+    private int errorCode;
+
+    private String errorMsg;
+
+    public ApplicationException(int errorCode, String errorMsg) {
+        this.errorCode = errorCode;
+        this.errorMsg = errorMsg;
+    }
+
+    public int getErrorCode() {
+        return errorCode;
+    }
+
+    public void setErrorCode(int errorCode) {
+        this.errorCode = errorCode;
+    }
+
+    public String getErrorMsg() {
+        return errorMsg;
+    }
+
+    public void setErrorMsg(String errorMsg) {
+        this.errorMsg = errorMsg;
+    }
+
+    public ResponseEntity buildErrorResponse() {
+        String message;
+        try {
+            ErrorResponse err = new ErrorResponse(errorCode, errorMsg);
+            message = marshal(err);
+        } catch (ApplicationException e) {
+            return ResponseEntity.status(500).body("Internal Server Error");
+        }
+        return ResponseEntity.status(errorCode).body(message);
+    }
+}
diff --git a/adapters/mso-nssmf-adapter/src/main/java/org/onap/so/adapters/nssmf/util/NssmfAdapterUtil.java b/adapters/mso-nssmf-adapter/src/main/java/org/onap/so/adapters/nssmf/util/NssmfAdapterUtil.java
new file mode 100644
index 0000000000..b0b84d822b
--- /dev/null
+++ b/adapters/mso-nssmf-adapter/src/main/java/org/onap/so/adapters/nssmf/util/NssmfAdapterUtil.java
@@ -0,0 +1,94 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - SO
+ * ================================================================================
+ * Copyright (C) 2020 Huawei Technologies Co., Ltd. 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.so.adapters.nssmf.util;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import java.io.IOException;
+import org.onap.so.adapters.nssmf.exceptions.ApplicationException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.onap.so.logger.ErrorCode;
+import static org.onap.so.logger.LoggingAnchor.THREE;
+import static org.onap.so.logger.MessageEnum.RA_NS_EXC;
+
+public class NssmfAdapterUtil {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(NssmfAdapterUtil.class);
+
+    public static final int BAD_REQUEST = 400;
+
+    private static final String UNMARSHAL_FAIL_MSG = "Failed to unmarshal json";
+
+    private static final String MARSHAL_FAIL_MSG = "Failed to marshal object";
+
+    private static final ObjectMapper MAPPER = new ObjectMapper();
+
+    public static class StatusDesc {
+
+        public static final String ALLOCATE_NSS_SUCCESS = "Allocating nss is " + "successful";
+
+        public static final String CREATE_NSS_SUCCESS = "Creating nss is " + "successful";
+
+        public static final String DEALLOCATE_NSS_SUCCESS = "Deallocate nss " + "is successful";
+
+        public static final String ACTIVATE_NSS_SUCCESS = "Activate nss " + "is successful";
+
+        public static final String DEACTIVATE_NSS_SUCCESS = "Deactivate nss " + "is successful";
+
+        public static final String QUERY_JOB_STATUS_FAILED = "Query job " + "status failed";
+
+        public static final String QUERY_JOB_STATUS_SUCCESS = "Query job " + "status is successful";
+
+        private StatusDesc() {
+
+        }
+    }
+
+    private NssmfAdapterUtil() {
+
+    }
+
+    public static void assertObjectNotNull(Object object) throws ApplicationException {
+        if (null == object) {
+            LOGGER.error("Object is null.");
+            throw new ApplicationException(BAD_REQUEST, "An object is null.");
+        }
+    }
+
+    public static <T> T unMarshal(String jsonstr, Class<T> type) throws ApplicationException {
+        try {
+            return MAPPER.readValue(jsonstr, type);
+        } catch (IOException e) {
+            LOGGER.error(THREE, RA_NS_EXC.toString(), ErrorCode.BusinessProcessError.getValue(), UNMARSHAL_FAIL_MSG, e);
+            throw new ApplicationException(BAD_REQUEST, UNMARSHAL_FAIL_MSG);
+        }
+    }
+
+    public static String marshal(Object srcObj) throws ApplicationException {
+        try {
+            return MAPPER.writerWithDefaultPrettyPrinter().writeValueAsString(srcObj);
+        } catch (IOException e) {
+            LOGGER.error(THREE, RA_NS_EXC.toString(), ErrorCode.BusinessProcessError.getValue(), MARSHAL_FAIL_MSG, e);
+            throw new ApplicationException(BAD_REQUEST, MARSHAL_FAIL_MSG);
+        }
+    }
+
+}