mirror of https://gitee.com/bigwinds/arangodb
146 lines
4.1 KiB
C++
146 lines
4.1 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief abstract class for handlers
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2010-2011 triagens GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is triAGENS GmbH, Cologne, Germany
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///
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/// @author Dr. Frank Celler
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/// @author Copyright 2009-2011, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#include "HttpHandler.h"
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#include "Logger/Logger.h"
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#include "HttpServer/HttpServer.h"
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#include "Rest/HttpRequest.h"
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#include "Rest/HttpResponse.h"
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#include "GeneralServer/GeneralServerJob.h"
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namespace triagens {
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namespace rest {
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// -----------------------------------------------------------------------------
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// constructs and destructors
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// -----------------------------------------------------------------------------
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HttpHandler::HttpHandler (HttpRequest* request)
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: _handlerFactory(0),
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request(request),
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response(0),
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_task(0),
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_job(0) {
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}
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HttpHandler::~HttpHandler () {
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if (request != 0) {
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delete request;
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}
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if (response != 0) {
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delete response;
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}
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if (_task != 0) {
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_task->setHandler(0);
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}
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if (_handlerFactory != 0) {
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_handlerFactory->unregisterHandler(this);
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}
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}
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// -----------------------------------------------------------------------------
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// public methods
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// -----------------------------------------------------------------------------
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HttpResponse* HttpHandler::getResponse () {
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return response;
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}
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void HttpHandler::setHandlerFactory (HttpHandlerFactory* handlerFactory) {
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_handlerFactory = handlerFactory;
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}
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bool HttpHandler::handleAsync () {
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if (_job == 0) {
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LOGGER_WARNING << "no job is known";
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}
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else {
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HttpResponse* response = getResponse();
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try {
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if (response == 0) {
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basics::InternalError err("no response received from handler");
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handleError(err);
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response = getResponse();
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}
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if (response != 0) {
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_task->handleResponse(response);
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}
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}
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catch (...) {
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LOGGER_ERROR << "caught exception in " << __FILE__ << "@" << __LINE__;
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}
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// this might delete the handler (i.e. ourselves!)
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return _job->beginShutdown();
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}
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return true;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief create a job
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////////////////////////////////////////////////////////////////////////////////
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Job* HttpHandler::createJob () {
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LOGGER_WARNING << "job creation requested for handler that is not intended to produce jobs";
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return 0;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief create a job
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////////////////////////////////////////////////////////////////////////////////
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Job* HttpHandler::createJob (Scheduler* scheduler, Dispatcher* dispatcher, HttpCommTask* task) {
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HttpServer* server = dynamic_cast<HttpServer*>(task->getServer());
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GeneralAsyncCommTask<HttpServer, HttpHandlerFactory, HttpCommTask>* atask =
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dynamic_cast<GeneralAsyncCommTask<HttpServer, HttpHandlerFactory, HttpCommTask>*>(task);
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GeneralServerJob<HttpServer, HttpHandlerFactory::GeneralHandler>* job =
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new GeneralServerJob<HttpServer, HttpHandlerFactory::GeneralHandler>(server, scheduler, dispatcher, atask, this);
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setJob(job);
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return job;
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}
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}
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}
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