1 files changed, 149 insertions, 0 deletions
diff --git a/mod2/catalog-service/src/main/java/org/onap/dcaegen2/platform/mod/web/controller/AppExceptionHandler.java b/mod2/catalog-service/src/main/java/org/onap/dcaegen2/platform/mod/web/controller/AppExceptionHandler.java
new file mode 100644
index 0000000..1a2f5f9
--- /dev/null
+++ b/mod2/catalog-service/src/main/java/org/onap/dcaegen2/platform/mod/web/controller/AppExceptionHandler.java
@@ -0,0 +1,149 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  org.onap.dcae
+ *  ================================================================================
+ *  Copyright (c) 2020 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.dcaegen2.platform.mod.web.controller;
+
+import org.onap.dcaegen2.platform.mod.model.exceptions.MissingRequestBodyException;
+import org.onap.dcaegen2.platform.mod.model.exceptions.OperationNotAllowedException;
+import org.onap.dcaegen2.platform.mod.model.exceptions.ResourceConflictException;
+import org.onap.dcaegen2.platform.mod.model.exceptions.basemicroservice.BaseMicroserviceNotFoundException;
+import org.onap.dcaegen2.platform.mod.model.exceptions.common.UserNotPassedException;
+import org.onap.dcaegen2.platform.mod.model.exceptions.deploymentartifact.DeploymentArtifactNotFound;
+import org.onap.dcaegen2.platform.mod.model.exceptions.msinstance.MsInstanceNotFoundException;
+import org.onap.dcaegen2.platform.mod.model.exceptions.specification.SpecificationInvalid;
+import org.onap.dcaegen2.platform.mod.model.restapi.ErrorResponse;
+import org.onap.dcaegen2.platform.mod.model.restapi.GenericErrorResponse;
+import com.fasterxml.jackson.core.JsonParseException;
+import com.google.gson.Gson;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.validation.FieldError;
+import org.springframework.web.bind.MethodArgumentNotValidException;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.context.request.WebRequest;
+import org.springframework.web.reactive.function.client.WebClientResponseException;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * a class to manage all exceptions
+ */
+@ControllerAdvice
+@Slf4j
+public class AppExceptionHandler {
+
+    @ExceptionHandler(value = {WebClientResponseException.class})
+    public ResponseEntity<ErrorResponse> handleCompSpecInvalidException
+            (WebClientResponseException ex, WebRequest request) {
+        return new ResponseEntity<ErrorResponse>
+                (new ErrorResponse(ex.getResponseBodyAsString()), HttpStatus.INTERNAL_SERVER_ERROR);
+    }
+
+    @ExceptionHandler(value = {JsonParseException.class})
+    public ResponseEntity<GenericErrorResponse> handleJsonParsedException
+            (JsonParseException ex, WebRequest request) {
+
+        GenericErrorResponse response = new GenericErrorResponse();
+        response.setStatus(HttpStatus.BAD_REQUEST);
+        response.setMessage("Invalid JSON request body format.");
+        response.setErrors(Arrays.asList(ex.getMessage()));
+        return new ResponseEntity<>(response, HttpStatus.BAD_REQUEST);
+    }
+
+    @ExceptionHandler
+    public ResponseEntity<GenericErrorResponse> specificationInvalid(SpecificationInvalid ex) {
+        Map<String, Object> errorResponse = new Gson().fromJson(ex.getMessage(), Map.class);
+        GenericErrorResponse response = new GenericErrorResponse();
+        response.setMessage((String) errorResponse.get("summary"));
+        response.setStatus(HttpStatus.BAD_REQUEST);
+        response.setErrors((List<String>) errorResponse.get("errors"));
+        return new ResponseEntity<>(response, HttpStatus.BAD_REQUEST);
+    }
+
+    @ExceptionHandler
+    public ResponseEntity<GenericErrorResponse> missingRequestBodyException(MissingRequestBodyException ex){
+        GenericErrorResponse response = new GenericErrorResponse();
+        response.setMessage("Missing paramaters");
+        response.setStatus(HttpStatus.BAD_REQUEST);
+        response.setErrors(Arrays.asList("Missing required request body paramaters"));
+        return new ResponseEntity<>(response, HttpStatus.BAD_REQUEST);
+    }
+
+    @ExceptionHandler
+    public ResponseEntity<ErrorResponse> resolveUserNotPassedException(UserNotPassedException ex){
+        return new ResponseEntity<>(new ErrorResponse(ex.getMessage()), HttpStatus.BAD_REQUEST);
+    }
+
+    @ExceptionHandler
+    public ResponseEntity<ErrorResponse> resolveMsInstanceNotFoundException(MsInstanceNotFoundException ex) {
+        log.error(ex.getMessage());
+        return new ResponseEntity<>(new ErrorResponse(ex.getMessage()), HttpStatus.BAD_REQUEST);
+    }
+
+    @ExceptionHandler
+    public ResponseEntity<ErrorResponse> resolveDeploymentArtifactNotFound(DeploymentArtifactNotFound ex) {
+        log.error(ex.getMessage());
+        return new ResponseEntity<>(new ErrorResponse(ex.getMessage()),
+                HttpStatus.BAD_REQUEST);
+    }
+
+    @ExceptionHandler
+    public ResponseEntity<ErrorResponse> resolveOperationNotAllowed(OperationNotAllowedException ex) {
+        log.error(ex.getMessage());
+        return new ResponseEntity<>(new ErrorResponse(ex.getMessage()),
+                HttpStatus.CONFLICT);
+    }
+
+    @ExceptionHandler
+    public ResponseEntity<ErrorResponse> resolveResourceConflict(ResourceConflictException ex) {
+        return new ResponseEntity<>(new ErrorResponse(ex.getMessage()), HttpStatus.CONFLICT);
+    }
+
+    @ExceptionHandler(value = {BaseMicroserviceNotFoundException.class})
+    public ResponseEntity<ErrorResponse> resolveResourceNotFoundExcetions(RuntimeException ex) {
+        log.error(ex.getMessage(), ex);
+        return new ResponseEntity<>(new ErrorResponse(ex.getMessage()), HttpStatus.CONFLICT);
+    }
+
+    @ExceptionHandler(MethodArgumentNotValidException.class)
+    public ResponseEntity<GenericErrorResponse> resolveBeanValidationException(MethodArgumentNotValidException ex){
+        log.error(ex.getMessage());
+        GenericErrorResponse response = new GenericErrorResponse();
+        response.setMessage("Validation failed.");
+        response.setStatus(HttpStatus.BAD_REQUEST);
+        response.setErrors(getBeanValidationErrors(ex));
+        return new ResponseEntity<>(response, HttpStatus.BAD_REQUEST);
+    }
+
+    private List<String> getBeanValidationErrors(MethodArgumentNotValidException ex) {
+        List<String> errors = new ArrayList<>();
+        ex.getBindingResult().getAllErrors().forEach((error) -> {
+            String fieldName = ((FieldError) error).getField();
+            String errorMessage = error.getDefaultMessage();
+            errors.add(String.format("%s: %s", fieldName, errorMessage));
+        });
+        return errors;
+    }
+}