eu.tripledframework.demo.presentation.GlobalExceptionControllerAdvice.java Source code

Introduction

Here is the source code for eu.tripledframework.demo.presentation.GlobalExceptionControllerAdvice.java

Source

/*
 * Copyright 2015 TripleD framework.
 *
 * 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 eu.tripledframework.demo.presentation;

import eu.tripledframework.eventbus.internal.infrastructure.interceptor.CommandValidationException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.ResponseStatus;

import javax.validation.ConstraintViolation;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutionException;

@ControllerAdvice
public class GlobalExceptionControllerAdvice {

    private static final Logger LOGGER = LoggerFactory.getLogger(GlobalExceptionControllerAdvice.class);

    @ExceptionHandler
    @ResponseStatus(HttpStatus.CONFLICT)
    @ResponseBody
    public List<ErrorMessage> handleExecutionException(ExecutionException exception) throws Throwable {
        // we simply rethrow the cause.
        List<ErrorMessage> errorMessages = new ArrayList<>();
        if (exception.getCause() instanceof CommandValidationException) {
            errorMessages.addAll(handleValidationError((CommandValidationException) exception.getCause()));
        } else {
            LOGGER.error("The execution failed with an uncaught exception.", exception);
            errorMessages.add(new ErrorMessage("The execution failed with an uncaught exception."));
        }
        return errorMessages;
    }

    private List<ErrorMessage> handleValidationError(CommandValidationException exception) {
        List<ErrorMessage> errorMessages = new ArrayList<>();
        for (ConstraintViolation<Object> objectConstraintViolation : exception.getConstraintViolations()) {
            ErrorMessage errorMessage = new ErrorMessage(objectConstraintViolation.getMessage());

            errorMessages.add(errorMessage);
        }

        return errorMessages;
    }
}