mirror of https://gitee.com/bigwinds/arangodb
117 lines
3.9 KiB
C++
117 lines
3.9 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2014 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 ArangoDB GmbH, Cologne, Germany
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///
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/// @author Kaveh Vahedipour
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////////////////////////////////////////////////////////////////////////////////
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#include "RestServer/ArangoServer.h"
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#include "Rest/HttpRequest.h"
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#include "Rest/Version.h"
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#include "RestAgencyHandler.h"
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#include "Agency/Agent.h"
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#include <velocypack/Builder.h>
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#include <velocypack/velocypack-aliases.h>
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#include "Basics/Logger.h"
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using namespace arangodb;
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using namespace arangodb::basics;
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using namespace arangodb::rest;
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using namespace arangodb::consensus;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief ArangoDB server
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////////////////////////////////////////////////////////////////////////////////
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extern ArangoServer* ArangoInstance;
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RestAgencyHandler::RestAgencyHandler(HttpRequest* request, Agent* agent)
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: RestBaseHandler(request), _agent(agent) {
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}
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bool RestAgencyHandler::isDirect() const { return false; }
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inline HttpHandler::status_t RestAgencyHandler::reportErrorEmptyRequest () {
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LOG(WARN) << "Empty request to public agency interface.";
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generateError(HttpResponse::NOT_FOUND,404);
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return HttpHandler::status_t(HANDLER_DONE);
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}
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inline HttpHandler::status_t RestAgencyHandler::reportTooManySuffices () {
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LOG(WARN) << "Too many suffixes. Agency public interface takes one path.";
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generateError(HttpResponse::NOT_FOUND,404);
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return HttpHandler::status_t(HANDLER_DONE);
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}
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inline HttpHandler::status_t RestAgencyHandler::unknownMethod () {
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LOG(WARN) << "Too many suffixes. Agency public interface takes one path.";
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generateError(HttpResponse::NOT_FOUND,404);
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return HttpHandler::status_t(HANDLER_DONE);
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}
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inline HttpHandler::status_t RestAgencyHandler::redirect (id_t leader_id) {
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LOG(WARN) << "Redirecting request to " << leader_id;
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generateError(HttpResponse::NOT_FOUND,404);
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return HttpHandler::status_t(HANDLER_DONE);
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}
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inline HttpHandler::status_t RestAgencyHandler::handleReadWrite () {
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bool accepted;
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if (_request->suffix()[0] == "write") {
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write_ret_t ret = _agent->write(_request->toVelocyPack());
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accepted = ret.accepted;
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_agent->waitFor (ret);
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} else {
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ret = _agent->read(_request->toVelocyPack());
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accepted = ret.accepted;
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}
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if (accepted) { // We accepted the request
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ret.result->close();
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generateResult(ret.result->slice());
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} else { // We redirect the request
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_response->setHeader("Location", _agent->config().endpoints[ret.redirect]);
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generateError(HttpResponse::TEMPORARY_REDIRECT,307);
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}
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return HttpHandler::status_t(HANDLER_DONE);
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}
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HttpHandler::status_t RestAgencyHandler::execute() {
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try {
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if (_request->suffix().size() == 0) { // Empty request
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return reportErrorEmptyRequest();
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} else if (_request->suffix().size() > 1) { // path size >= 2
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return reportTooManySuffices();
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} else {
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if (_request->suffix()[0] == "write" ||
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_request->suffix()[0] == "read") { // write to / read from agency
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return handleReadWrite();
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} else {
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return reportUnknownMethod();
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}
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}
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} catch (...) {
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// Ignore this error
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}
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return HttpHandler::status_t(HANDLER_DONE);
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}
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