001/*
002 * The contents of this file are subject to the terms of the Common Development and
003 * Distribution License (the License). You may not use this file except in compliance with the
004 * License.
005 *
006 * You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
007 * specific language governing permission and limitations under the License.
008 *
009 * When distributing Covered Software, include this CDDL Header Notice in each file and include
010 * the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
011 * Header, with the fields enclosed by brackets [] replaced by your own identifying
012 * information: "Portions Copyright [year] [name of copyright owner]".
013 *
014 * Copyright 2016 ForgeRock AS.
015 */
016package org.forgerock.opendj.rest2ldap;
017
018import static org.forgerock.http.protocol.Responses.newInternalServerError;
019import static org.forgerock.opendj.rest2ldap.Rest2ldapMessages.ERR_ERROR_RESPONSE;
020import static org.forgerock.opendj.rest2ldap.Rest2ldapMessages.ERR_RUNTIME_EXCEPTION;
021
022import org.forgerock.http.Filter;
023import org.forgerock.http.Handler;
024import org.forgerock.http.protocol.Request;
025import org.forgerock.http.protocol.Response;
026import org.forgerock.http.protocol.Status;
027import org.forgerock.i18n.slf4j.LocalizedLogger;
028import org.forgerock.services.context.Context;
029import org.forgerock.util.Function;
030import org.forgerock.util.promise.NeverThrowsException;
031import org.forgerock.util.promise.Promise;
032import org.forgerock.util.promise.ResultHandler;
033
034/** Logs internal server errors and runtime exceptions once the request has been processed. */
035public final class ErrorLoggerFilter implements Filter {
036
037    private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();
038
039    @Override
040    public Promise<Response, NeverThrowsException> filter(final Context context,
041                                                          final Request request,
042                                                          final Handler next) {
043        return next.handle(context, request)
044                .thenOnResult(new ResultHandler<Response>() {
045                    @Override
046                    public void handleResult(final Response response) {
047                        final Exception cause = response.getCause();
048                        final Status status = response.getStatus();
049                        if (status.isServerError() && cause != null) {
050                            logger.error(ERR_ERROR_RESPONSE,
051                                         toLog(request),
052                                         status.toString(),
053                                         cause.getLocalizedMessage(),
054                                         cause);
055                        }
056                    }
057                }).thenCatchRuntimeException(new Function<RuntimeException, Response, NeverThrowsException>() {
058                    @Override
059                    public Response apply(final RuntimeException e) {
060                        logger.error(ERR_RUNTIME_EXCEPTION, toLog(request), e.getLocalizedMessage(), e);
061                        return newInternalServerError(e);
062                    }
063                });
064    }
065
066    private String toLog(final Request request) {
067        return request.getMethod() + request.getUri();
068    }
069}