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/**
* Copyright (C) 2017 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* 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 GNU Affero General 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.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kCommand
#include "mongo/platform/basic.h"
#include "mongo/db/service_entry_point_mongod.h"
#include "mongo/db/commands/fsync_locked.h"
#include "mongo/db/concurrency/global_lock_acquisition_tracker.h"
#include "mongo/db/curop.h"
#include "mongo/db/read_concern.h"
#include "mongo/db/repl/repl_client_info.h"
#include "mongo/db/service_entry_point_common.h"
#include "mongo/logger/redaction.h"
#include "mongo/rpc/get_status_from_command_result.h"
#include "mongo/util/log.h"
namespace mongo {
class ServiceEntryPointMongod::Hooks final : public ServiceEntryPointCommon::Hooks {
public:
bool lockedForWriting() const override {
return mongo::lockedForWriting();
}
void waitForReadConcern(OperationContext* opCtx,
const CommandInvocation* invocation,
const OpMsgRequest& request) const override {
Status rcStatus = mongo::waitForReadConcern(
opCtx, repl::ReadConcernArgs::get(opCtx), invocation->allowsAfterClusterTime());
if (!rcStatus.isOK()) {
if (rcStatus == ErrorCodes::ExceededTimeLimit) {
const int debugLevel =
serverGlobalParams.clusterRole == ClusterRole::ConfigServer ? 0 : 2;
LOG(debugLevel) << "Command on database " << request.getDatabase()
<< " timed out waiting for read concern to be satisfied. Command: "
<< redact(ServiceEntryPointCommon::getRedactedCopyForLogging(
invocation->definition(), request.body));
}
uassertStatusOK(rcStatus);
}
}
void waitForWriteConcern(OperationContext* opCtx,
const CommandInvocation* invocation,
const repl::OpTime& lastOpBeforeRun,
BSONObjBuilder& commandResponseBuilder) const override {
auto lastOpAfterRun = repl::ReplClientInfo::forClient(opCtx->getClient()).getLastOp();
// Ensures that if we tried to do a write, we wait for write concern, even if that write was
// a noop.
if ((lastOpAfterRun == lastOpBeforeRun) &&
GlobalLockAcquisitionTracker::get(opCtx).getGlobalExclusiveLockTaken()) {
repl::ReplClientInfo::forClient(opCtx->getClient()).setLastOpToSystemLastOpTime(opCtx);
lastOpAfterRun = repl::ReplClientInfo::forClient(opCtx->getClient()).getLastOp();
}
WriteConcernResult res;
auto waitForWCStatus =
mongo::waitForWriteConcern(opCtx, lastOpAfterRun, opCtx->getWriteConcern(), &res);
CommandHelpers::appendCommandWCStatus(commandResponseBuilder, waitForWCStatus, res);
// SERVER-22421: This code is to ensure error response backwards compatibility with the
// user management commands. This can be removed in 3.6.
if (!waitForWCStatus.isOK() && invocation->definition()->isUserManagementCommand()) {
BSONObj temp = commandResponseBuilder.asTempObj().copy();
commandResponseBuilder.resetToEmpty();
CommandHelpers::appendCommandStatusNoThrow(commandResponseBuilder, waitForWCStatus);
commandResponseBuilder.appendElementsUnique(temp);
}
}
void waitForLinearizableReadConcern(OperationContext* opCtx) const override {
// When a linearizable read command is passed in, check to make sure we're reading
// from the primary.
if (repl::ReadConcernArgs::get(opCtx).getLevel() ==
repl::ReadConcernLevel::kLinearizableReadConcern) {
uassertStatusOK(mongo::waitForLinearizableReadConcern(opCtx));
}
}
void uassertCommandDoesNotSpecifyWriteConcern(const BSONObj& cmd) const override {
if (commandSpecifiesWriteConcern(cmd)) {
uasserted(ErrorCodes::InvalidOptions, "Command does not support writeConcern");
}
}
void attachCurOpErrInfo(OperationContext* opCtx, const BSONObj& replyObj) const override {
CurOp::get(opCtx)->debug().errInfo = getStatusFromCommandResult(replyObj);
}
};
DbResponse ServiceEntryPointMongod::handleRequest(OperationContext* opCtx, const Message& m) {
return ServiceEntryPointCommon::handleRequest(opCtx, m, Hooks{});
}
} // namespace mongo
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