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/*
* Copyright (C) 2008 10gen 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::kSharding
#include "mongo/platform/basic.h"
#include "mongo/s/cluster_last_error_info.h"
#include <utility>
#include "mongo/db/client.h"
#include "mongo/db/commands/server_status_metric.h"
#include "mongo/db/lasterror.h"
#include "mongo/db/stats/timer_stats.h"
#include "mongo/rpc/metadata/sharding_metadata.h"
#include "mongo/util/log.h"
namespace mongo {
const ClientBasic::Decoration<ClusterLastErrorInfo> ClusterLastErrorInfo::get =
ClientBasic::declareDecoration<ClusterLastErrorInfo>();
void ClusterLastErrorInfo::addShardHost(const std::string& shardHost) {
_cur->shardHostsWritten.insert(shardHost);
}
void ClusterLastErrorInfo::addHostOpTime(ConnectionString connStr, HostOpTime stat) {
_cur->hostOpTimes[connStr] = stat;
}
void ClusterLastErrorInfo::addHostOpTimes(const HostOpTimeMap& hostOpTimes) {
for (HostOpTimeMap::const_iterator it = hostOpTimes.begin(); it != hostOpTimes.end(); ++it) {
addHostOpTime(it->first, it->second);
}
}
void ClusterLastErrorInfo::newRequest() {
std::swap(_cur, _prev);
_cur->clear();
}
void ClusterLastErrorInfo::disableForCommand() {
RequestInfo* temp = _cur;
_cur = _prev;
_prev = temp;
}
static TimerStats gleWtimeStats;
static ServerStatusMetricField<TimerStats> displayGleLatency("getLastError.wtime", &gleWtimeStats);
void saveGLEStats(const BSONObj& metadata, StringData hostString) {
if (!haveClient()) {
// TODO: how can this happen?
return;
}
auto swShardingMetadata = rpc::ShardingMetadata::readFromMetadata(metadata);
if (swShardingMetadata.getStatus() == ErrorCodes::NoSuchKey) {
return;
} else if (!swShardingMetadata.isOK()) {
warning() << "Got invalid sharding metadata " << swShardingMetadata.getStatus()
<< " metadata object was '" << metadata << "'";
return;
}
auto shardConn = ConnectionString::parse(hostString.toString());
// If we got the reply from this host, we expect that its 'hostString' must be valid.
if (!shardConn.isOK()) {
severe() << "got bad host string in saveGLEStats: " << hostString;
}
invariantOK(shardConn.getStatus());
auto shardingMetadata = std::move(swShardingMetadata.getValue());
auto& clientInfo = cc();
LOG(4) << "saveGLEStats lastOpTime:" << shardingMetadata.getLastOpTime()
<< " electionId:" << shardingMetadata.getLastElectionId();
ClusterLastErrorInfo::get(clientInfo)
.addHostOpTime(
shardConn.getValue(),
HostOpTime(shardingMetadata.getLastOpTime(), shardingMetadata.getLastElectionId()));
}
} // namespace mongo
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