001/**
002 * Copyright (C) 2006-2021 Talend Inc. - www.talend.com
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.talend.sdk.component.server.front.error;
017
018import static javax.ws.rs.core.MediaType.WILDCARD_TYPE;
019
020import java.util.Optional;
021
022import javax.annotation.PostConstruct;
023import javax.enterprise.context.Dependent;
024import javax.inject.Inject;
025import javax.ws.rs.WebApplicationException;
026import javax.ws.rs.core.Response;
027import javax.ws.rs.ext.ExceptionMapper;
028import javax.ws.rs.ext.Provider;
029
030import org.talend.sdk.component.server.configuration.ComponentServerConfiguration;
031import org.talend.sdk.component.server.front.model.ErrorDictionary;
032import org.talend.sdk.component.server.front.model.error.ErrorPayload;
033
034import lombok.extern.slf4j.Slf4j;
035
036@Slf4j
037@Dependent
038@Provider
039public class DefaultExceptionHandler implements ExceptionMapper<Throwable> {
040
041    @Inject
042    private ComponentServerConfiguration configuration;
043
044    private boolean replaceException;
045
046    @PostConstruct
047    private void init() {
048        replaceException = !"false".equalsIgnoreCase(configuration.getDefaultExceptionMessage());
049    }
050
051    @Override
052    public Response toResponse(final Throwable exception) {
053        final Response response;
054        if (WebApplicationException.class.isInstance(exception)) {
055            response = WebApplicationException.class.cast(exception).getResponse();
056        } else {
057            final Optional<Throwable> optCause = Optional.ofNullable(exception.getCause());
058            if (optCause.isPresent()) {
059                final Throwable cause = optCause.get();
060                if (WebApplicationException.class.isInstance(cause)) {
061                    response = WebApplicationException.class.cast(cause).getResponse();
062                } else {
063                    response = Response
064                            .status(Response.Status.INTERNAL_SERVER_ERROR)
065                            .entity(new ErrorPayload(ErrorDictionary.UNEXPECTED,
066                                    replaceException ? configuration.getDefaultExceptionMessage() : cause.getMessage()))
067                            .type(WILDCARD_TYPE)
068                            .build();
069                }
070            } else {
071                response = Response
072                        .status(Response.Status.INTERNAL_SERVER_ERROR)
073                        .entity(new ErrorPayload(ErrorDictionary.UNEXPECTED,
074                                replaceException ? configuration.getDefaultExceptionMessage() : exception.getMessage()))
075                        .type(WILDCARD_TYPE)
076                        .build();
077            }
078        }
079        return response;
080    }
081
082}