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/**
* Copyright (C) 2018-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/rpc/metadata/tracking_metadata.h"
#include "mongo/bson/util/bson_check.h"
#include "mongo/bson/util/bson_extract.h"
#include "mongo/db/jsobj.h"
#include "mongo/rpc/metadata.h"
namespace mongo {
namespace rpc {
namespace {
const char kOperIdFieldName[] = "operId";
const char kOperNameFieldName[] = "operName";
const char kParentOperIdFieldName[] = "parentOperId";
} // unnamed namespace
const OperationContext::Decoration<TrackingMetadata> TrackingMetadata::get =
OperationContext::declareDecoration<TrackingMetadata>();
TrackingMetadata::TrackingMetadata(OID operId, std::string operName)
: _operId(std::move(operId)), _operName(std::move(operName)) {}
TrackingMetadata::TrackingMetadata(OID operId, std::string operName, std::string parentOperId)
: _operId(std::move(operId)),
_operName(std::move(operName)),
_parentOperId(std::move(parentOperId)) {}
StatusWith<TrackingMetadata> TrackingMetadata::readFromMetadata(const BSONObj& metadataObj) {
return readFromMetadata(metadataObj.getField(fieldName()));
}
void TrackingMetadata::initWithOperName(const std::string& name) {
// _operId to be already initialized if it was created with constructChildMetadata.
if (!_operId) {
OID operId;
operId.init();
_operId = operId;
}
_operName = name;
}
std::string TrackingMetadata::toString() const {
invariant(_operId);
invariant(_operName);
std::ostringstream stream;
if (_parentOperId) {
stream << "Cmd: " << *_operName << ", TrackingId: " << *_parentOperId << "|" << *_operId;
} else {
stream << "Cmd: " << *_operName << ", TrackingId: " << *_operId;
}
return stream.str();
}
TrackingMetadata TrackingMetadata::constructChildMetadata() const {
OID newOperId;
newOperId.init();
std::string newParentOperId =
_parentOperId ? *_parentOperId + "|" + _operId->toString() : _operId->toString();
return TrackingMetadata(newOperId, std::string(), newParentOperId);
}
StatusWith<TrackingMetadata> TrackingMetadata::readFromMetadata(const BSONElement& metadataElem) {
if (metadataElem.eoo()) {
return TrackingMetadata{};
} else if (metadataElem.type() != mongo::Object) {
return {ErrorCodes::TypeMismatch,
str::stream() << "TrackingMetadata element has incorrect type: expected"
<< mongo::Object
<< " but got "
<< metadataElem.type()};
}
BSONObj metadataObj = metadataElem.Obj();
OID operId;
auto status = bsonExtractOIDField(metadataObj, kOperIdFieldName, &operId);
if (!status.isOK()) {
return status;
}
std::string operName;
status = bsonExtractStringField(metadataObj, kOperNameFieldName, &operName);
if (!status.isOK()) {
return status;
}
std::string parentOperId;
status = bsonExtractStringField(metadataObj, kParentOperIdFieldName, &parentOperId);
if (!status.isOK()) {
if (status != ErrorCodes::NoSuchKey) {
return status;
}
return TrackingMetadata(std::move(operId), std::move(operName));
}
return TrackingMetadata(std::move(operId), std::move(operName), std::move(parentOperId));
}
void TrackingMetadata::writeToMetadata(BSONObjBuilder* builder) const {
BSONObjBuilder metadataBuilder(builder->subobjStart(fieldName()));
invariant(_operId);
invariant(_operName);
metadataBuilder.append(kOperIdFieldName, *_operId);
metadataBuilder.append(kOperNameFieldName, *_operName);
if (_parentOperId) {
metadataBuilder.append(kParentOperIdFieldName, *_parentOperId);
}
}
BSONObj TrackingMetadata::removeTrackingData(BSONObj metadata) {
BSONObjBuilder builder;
for (auto elem : metadata) {
if (elem.fieldNameStringData() != rpc::TrackingMetadata::fieldName()) {
builder.append(elem);
}
}
return builder.obj();
}
} // namespace rpc
} // namespace mongo
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