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/**
* Copyright (C) 2020-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/pipeline/document_source_operation_metrics.h"
#include "mongo/db/pipeline/lite_parsed_document_source.h"
#include "mongo/db/server_options.h"
#include "mongo/db/stats/operation_resource_consumption_gen.h"
#include "mongo/db/stats/resource_consumption_metrics.h"
#include "mongo/util/net/socket_utils.h"
namespace mongo {
using boost::intrusive_ptr;
REGISTER_DOCUMENT_SOURCE(operationMetrics,
DocumentSourceOperationMetrics::LiteParsed::parse,
DocumentSourceOperationMetrics::createFromBson,
AllowedWithApiStrict::kNeverInVersion1);
const char* DocumentSourceOperationMetrics::getSourceName() const {
return kStageName.rawData();
}
namespace {
static constexpr StringData kClearMetrics = "clearMetrics"_sd;
static constexpr StringData kDatabaseName = "db"_sd;
static constexpr StringData kLocalTimeFieldName = "localTime"_sd;
} // namespace
DocumentSource::GetNextResult DocumentSourceOperationMetrics::doGetNext() {
if (_operationMetrics.empty()) {
auto dbMetrics = [&]() {
if (_clearMetrics) {
return ResourceConsumption::get(pExpCtx->opCtx).getAndClearDbMetrics();
}
return ResourceConsumption::get(pExpCtx->opCtx).getDbMetrics();
}();
auto localTime = jsTime(); // fetch current time to include in all metrics documents
for (auto& [dbName, metrics] : dbMetrics) {
BSONObjBuilder builder;
builder.append(kDatabaseName, dbName);
builder.appendDate(kLocalTimeFieldName, localTime);
metrics.toBson(&builder);
_operationMetrics.push_back(builder.obj());
}
_operationMetricsIter = _operationMetrics.begin();
}
if (_operationMetricsIter != _operationMetrics.end()) {
auto doc = Document(std::move(*_operationMetricsIter));
_operationMetricsIter++;
return doc;
}
return GetNextResult::makeEOF();
}
intrusive_ptr<DocumentSource> DocumentSourceOperationMetrics::createFromBson(
BSONElement elem, const intrusive_ptr<ExpressionContext>& pExpCtx) {
if (!ResourceConsumption::isMetricsAggregationEnabled()) {
uasserted(ErrorCodes::CommandNotSupported,
"The aggregateOperationResourceConsumptionMetrics server parameter is not set");
}
const NamespaceString& nss = pExpCtx->ns;
uassert(ErrorCodes::InvalidNamespace,
"$operationMetrics must be run against the 'admin' database with {aggregate: 1}",
nss.db() == NamespaceString::kAdminDb && nss.isCollectionlessAggregateNS());
uassert(ErrorCodes::BadValue,
"The $operationMetrics stage specification must be an object",
elem.type() == Object);
auto stageObj = elem.Obj();
bool clearMetrics = false;
if (auto clearElem = stageObj.getField(kClearMetrics); !clearElem.eoo()) {
clearMetrics = clearElem.trueValue();
} else if (!stageObj.isEmpty()) {
uasserted(
ErrorCodes::BadValue,
"The $operationMetrics stage specification must be empty or contain valid options");
}
return new DocumentSourceOperationMetrics(pExpCtx, clearMetrics);
}
Value DocumentSourceOperationMetrics::serialize(
boost::optional<ExplainOptions::Verbosity> explain) const {
return Value(DOC(getSourceName() << Document()));
}
} // namespace mongo
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