Remove duplicated code for exception handling

[portal/nonrtric-controlpanel.git] / webapp-backend / src / main / java / org / oransc / portal / nonrtric / controlpanel / util / ErrorResponseHandler.java

diff --git a/webapp-backend/src/main/java/org/oransc/portal/nonrtric/controlpanel/util/ErrorResponseHandler.java b/webapp-backend/src/main/java/org/oransc/portal/nonrtric/controlpanel/util/ErrorResponseHandler.java
new file mode 100644 (file)
index 0000000..3dbfd04
--- /dev/null
+++ b/webapp-backend/src/main/java/org/oransc/portal/nonrtric/controlpanel/util/ErrorResponseHandler.java
@@ -0,0 +1,49 @@
+/*-
+ * ========================LICENSE_START=================================
+ * O-RAN-SC
+ * %%
+ * Copyright (C) 2020 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.
+ * ========================LICENSE_END===================================
+ */
+package org.oransc.portal.nonrtric.controlpanel.util;
+
+import javax.net.ssl.SSLException;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.client.HttpClientErrorException;
+import org.springframework.web.client.HttpServerErrorException;
+
+public class ErrorResponseHandler {
+
+    private ErrorResponseHandler() {
+        throw new IllegalStateException("ErrorResponseHandler is a utility class and not meant to be instantiated");
+    }
+
+    public static ResponseEntity<String> handleException(Exception throwable) {
+        if (throwable instanceof HttpClientErrorException) {
+            HttpClientErrorException e = (HttpClientErrorException) throwable;
+            return new ResponseEntity<>(e.getMessage(), e.getStatusCode());
+        } else if (throwable instanceof HttpServerErrorException) {
+            HttpServerErrorException e = (HttpServerErrorException) throwable;
+            return new ResponseEntity<>(e.getResponseBodyAsString(), e.getStatusCode());
+        } else if (throwable instanceof SSLException) {
+            SSLException e = (SSLException) throwable;
+            return new ResponseEntity<>("Could not create WebClient " + e.getMessage(),
+                HttpStatus.INTERNAL_SERVER_ERROR);
+        }
+        return new ResponseEntity<>(throwable.getClass().getName() + ": " + throwable.getMessage(),
+                HttpStatus.INTERNAL_SERVER_ERROR);
+    }
+}