workflow-designer-be/src/main/java/org/onap/sdc/workflow/api/ExceptionsHandler.java

   1 /*
   2  * Copyright © 2018 European Support Limited
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.onap.sdc.workflow.api;
  18
  19 import static org.springframework.http.HttpStatus.BAD_REQUEST;
  20 import static org.springframework.http.HttpStatus.INTERNAL_SERVER_ERROR;
  21 import static org.springframework.http.HttpStatus.NOT_FOUND;
  22 import static org.springframework.http.HttpStatus.UNPROCESSABLE_ENTITY;
  23
  24 import java.util.function.Function;
  25 import org.apache.commons.lang3.exception.ExceptionUtils;
  26 import org.apache.commons.text.RandomStringGenerator;
  27 import org.onap.sdc.workflow.api.types.ErrorResponse;
  28 import org.onap.sdc.workflow.api.types.UnexpectedErrorResponse;
  29 import org.onap.sdc.workflow.services.exceptions.EntityNotFoundException;
  30 import org.onap.sdc.workflow.services.exceptions.InvalidArtifactException;
  31 import org.onap.sdc.workflow.services.exceptions.UniqueValueViolationException;
  32 import org.onap.sdc.workflow.services.exceptions.VersionCreationException;
  33 import org.onap.sdc.workflow.services.exceptions.VersionModificationException;
  34 import org.onap.sdc.workflow.services.exceptions.VersionStateModificationException;
  35 import org.onap.sdc.workflow.services.exceptions.VersionStatusModificationException;
  36 import org.openecomp.sdc.logging.api.Logger;
  37 import org.openecomp.sdc.logging.api.LoggerFactory;
  38 import org.springframework.context.support.DefaultMessageSourceResolvable;
  39 import org.springframework.http.HttpHeaders;
  40 import org.springframework.http.HttpStatus;
  41 import org.springframework.http.ResponseEntity;
  42 import org.springframework.web.bind.MethodArgumentNotValidException;
  43 import org.springframework.web.bind.ServletRequestBindingException;
  44 import org.springframework.web.bind.annotation.ControllerAdvice;
  45 import org.springframework.web.bind.annotation.ExceptionHandler;
  46 import org.springframework.web.bind.annotation.RestController;
  47 import org.springframework.web.context.request.WebRequest;
  48 import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;
  49
  50 @ControllerAdvice
  51 @RestController
  52 public class ExceptionsHandler extends ResponseEntityExceptionHandler {
  53
  54     private static final Logger LOGGER = LoggerFactory.getLogger(ExceptionsHandler.class);
  55     private static final String LOG_MSG = "Exception was mapped to {} response";
  56     private static final String UNEXPECTED_ERROR_MSG = "Something bad happened. Please contact support with code %s";
  57     private static final RandomStringGenerator CODE_GENERATOR =
  58             new RandomStringGenerator.Builder().withinRange('A', 'Z').build();
  59     private static final int CODE_LENGTH = 8;
  60
  61     private static final Function<Exception, UnexpectedErrorResponse> UNEXPECTED_EXCEPTION_MAPPER =
  62             isDevInfoDisabled()
  63                     ? e -> new UnexpectedErrorResponse(getUnexpectedErrorMessage())
  64                     : e -> new UnexpectedErrorResponse(getUnexpectedErrorMessage(), ExceptionUtils.getStackTrace(e));
  65
  66     @Override
  67     public ResponseEntity<Object> handleServletRequestBindingException(ServletRequestBindingException ex,
  68             HttpHeaders headers, HttpStatus status, WebRequest request) {
  69         //For missing header exceptions
  70         LOGGER.debug(LOG_MSG, BAD_REQUEST, ex);
  71         return new ResponseEntity<>(new ErrorResponse(ex.getMessage()), BAD_REQUEST);
  72     }
  73
  74     @Override
  75     protected final ResponseEntity<Object> handleMethodArgumentNotValid(final MethodArgumentNotValidException exception,
  76             final HttpHeaders headers, final HttpStatus status, final WebRequest request) {
  77         LOGGER.debug(LOG_MSG, BAD_REQUEST, exception);
  78         String errorMsg = exception.getBindingResult().getFieldErrors().stream()
  79                                   .map(DefaultMessageSourceResolvable::getDefaultMessage).findFirst()
  80                                   .orElse(exception.getMessage());
  81         return new ResponseEntity<>(new ErrorResponse(errorMsg), BAD_REQUEST);
  82     }
  83
  84     @ExceptionHandler(EntityNotFoundException.class)
  85     public final ResponseEntity<ErrorResponse> handleNotFoundException(Exception exception) {
  86         LOGGER.debug(LOG_MSG, NOT_FOUND, exception);
  87         return new ResponseEntity<>(new ErrorResponse(exception.getMessage()), NOT_FOUND);
  88     }
  89
  90     @ExceptionHandler(
  91             {InvalidArtifactException.class, VersionCreationException.class, VersionModificationException.class,
  92                     VersionStateModificationException.class, VersionStatusModificationException.class,
  93                     UniqueValueViolationException.class})
  94     public final ResponseEntity<ErrorResponse> handleUnprocessableEntityException(Exception exception) {
  95         LOGGER.debug(LOG_MSG, UNPROCESSABLE_ENTITY, exception);
  96         return new ResponseEntity<>(new ErrorResponse(exception.getMessage()), UNPROCESSABLE_ENTITY);
  97     }
  98
  99     @ExceptionHandler(Exception.class)
 100     public final ResponseEntity<UnexpectedErrorResponse> handleUnexpectedException(Exception exception) {
 101         UnexpectedErrorResponse response = UNEXPECTED_EXCEPTION_MAPPER.apply(exception);
 102         LOGGER.error(response.getMessage(), exception);
 103         return new ResponseEntity<>(response, INTERNAL_SERVER_ERROR);
 104     }
 105
 106     private static boolean isDevInfoDisabled() {
 107         return Boolean.FALSE.toString().equalsIgnoreCase(System.getProperty("errors.includeDevInfo"));
 108     }
 109
 110     private static String getUnexpectedErrorMessage() {
 111         return String.format(UNEXPECTED_ERROR_MSG, CODE_GENERATOR.generate(CODE_LENGTH));
 112     }
 113 }