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arangodb/arangod/RestHandler/RestAdminStatisticsHandler.cpp

135 lines
4.4 KiB
C++

////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2018 ArangoDB GmbH, Cologne, Germany
///
/// 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.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Simon Grätzer
////////////////////////////////////////////////////////////////////////////////
#include "RestAdminStatisticsHandler.h"
#include "GeneralServer/ServerSecurityFeature.h"
#include "Statistics/Descriptions.h"
#include "Statistics/StatisticsFeature.h"
using namespace arangodb;
using namespace arangodb::basics;
using namespace arangodb::rest;
RestAdminStatisticsHandler::RestAdminStatisticsHandler(GeneralRequest* request,
GeneralResponse* response)
: RestBaseHandler(request, response) {}
RestStatus RestAdminStatisticsHandler::execute() {
if (_request->requestType() != rest::RequestType::GET) {
generateError(rest::ResponseCode::METHOD_NOT_ALLOWED, TRI_ERROR_HTTP_METHOD_NOT_ALLOWED);
return RestStatus::DONE;
}
ServerSecurityFeature* security =
application_features::ApplicationServer::getFeature<ServerSecurityFeature>(
"ServerSecurity");
TRI_ASSERT(security != nullptr);
if (!security->canAccessHardenedApi()) {
// dont leak information about server internals here
generateError(rest::ResponseCode::FORBIDDEN, TRI_ERROR_FORBIDDEN);
return RestStatus::DONE;
}
if (_request->requestPath() == "/_admin/statistics") {
getStatistics();
} else if (_request->requestPath() == "/_admin/statistics-description") {
getStatisticsDescription();
} else {
generateError(rest::ResponseCode::NOT_FOUND, TRI_ERROR_HTTP_NOT_FOUND);
}
// this handler is done
return RestStatus::DONE;
}
void RestAdminStatisticsHandler::getStatistics() {
stats::Descriptions const* desc = StatisticsFeature::descriptions();
if (!desc) {
generateError(rest::ResponseCode::NOT_FOUND, TRI_ERROR_DISABLED,
"statistics not enabled");
return;
}
VPackBuffer<uint8_t> buffer;
VPackBuilder tmp(buffer);
tmp.add(VPackValue(VPackValueType::Object, true));
tmp.add("time", VPackValue(TRI_microtime()));
tmp.add("enabled", VPackValue(StatisticsFeature::enabled()));
tmp.add("system", VPackValue(VPackValueType::Object, true));
desc->processStatistics(tmp);
tmp.close(); // system
tmp.add("client", VPackValue(VPackValueType::Object, true));
desc->clientStatistics(tmp);
tmp.close(); // client
tmp.add("http", VPackValue(VPackValueType::Object, true));
desc->httpStatistics(tmp);
tmp.close(); // http
tmp.add("server", VPackValue(VPackValueType::Object, true));
desc->serverStatistics(tmp);
tmp.close(); // server
tmp.add(StaticStrings::Error, VPackValue(false));
tmp.add(StaticStrings::Code, VPackValue(static_cast<int>(ResponseCode::OK)));
tmp.close(); // outer
generateResult(ResponseCode::OK, std::move(buffer));
}
void RestAdminStatisticsHandler::getStatisticsDescription() {
stats::Descriptions const* desc = StatisticsFeature::descriptions();
if (!desc) {
generateError(rest::ResponseCode::NOT_FOUND, TRI_ERROR_DISABLED,
"statistics not enabled");
return;
}
VPackBuffer<uint8_t> buffer;
VPackBuilder tmp(buffer);
tmp.add(VPackValue(VPackValueType::Object));
tmp.add("groups", VPackValue(VPackValueType::Array, true));
for (stats::Group const& group : desc->groups()) {
tmp.openObject();
group.toVPack(tmp);
tmp.close();
}
tmp.close(); // groups
tmp.add("figures", VPackValue(VPackValueType::Array, true));
for (stats::Figure const& figure : desc->figures()) {
tmp.openObject();
figure.toVPack(tmp);
tmp.close();
}
tmp.close(); // figures
tmp.add(StaticStrings::Error, VPackValue(false));
tmp.add(StaticStrings::Code, VPackValue(static_cast<int>(ResponseCode::OK)));
tmp.close(); // outer
generateResult(ResponseCode::OK, std::move(buffer));
}