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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.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kSharding
#include "mongo/platform/basic.h"
#include "mongo/db/s/sharding_logging.h"
#include "mongo/bson/bsonobj.h"
#include "mongo/db/s/sharding_state.h"
#include "mongo/db/server_options.h"
#include "mongo/executor/network_interface.h"
#include "mongo/logv2/log.h"
#include "mongo/s/catalog/type_changelog.h"
#include "mongo/s/grid.h"
namespace mongo {
namespace {
const std::string kActionLogCollectionName("actionlog");
const int kActionLogCollectionSizeMB = 20 * 1024 * 1024;
const std::string kChangeLogCollectionName("changelog");
const int kChangeLogCollectionSizeMB = 200 * 1024 * 1024;
// Global ShardingLogging instance
const auto shardingLogging = ServiceContext::declareDecoration<ShardingLogging>();
} // namespace
ShardingLogging::ShardingLogging() = default;
ShardingLogging::~ShardingLogging() = default;
ShardingLogging* ShardingLogging::get(ServiceContext* serviceContext) {
return &shardingLogging(serviceContext);
}
ShardingLogging* ShardingLogging::get(OperationContext* operationContext) {
return get(operationContext->getServiceContext());
}
Status ShardingLogging::logAction(OperationContext* opCtx,
const StringData what,
const StringData ns,
const BSONObj& detail) {
if (_actionLogCollectionCreated.load() == 0) {
Status result = _createCappedConfigCollection(opCtx,
kActionLogCollectionName,
kActionLogCollectionSizeMB,
ShardingCatalogClient::kMajorityWriteConcern);
if (result.isOK()) {
_actionLogCollectionCreated.store(1);
} else {
LOGV2(22078,
"Couldn't create config.actionlog collection: {error}",
"Couldn't create config.actionlog collection",
"error"_attr = result);
return result;
}
}
return _log(opCtx,
kActionLogCollectionName,
what,
ns,
detail,
ShardingCatalogClient::kMajorityWriteConcern);
}
Status ShardingLogging::logChangeChecked(OperationContext* opCtx,
const StringData what,
const StringData ns,
const BSONObj& detail,
const WriteConcernOptions& writeConcern) {
invariant(serverGlobalParams.clusterRole == ClusterRole::ConfigServer ||
writeConcern.wMode == WriteConcernOptions::kMajority);
if (_changeLogCollectionCreated.load() == 0) {
Status result = _createCappedConfigCollection(
opCtx, kChangeLogCollectionName, kChangeLogCollectionSizeMB, writeConcern);
if (result.isOK()) {
_changeLogCollectionCreated.store(1);
} else {
LOGV2(22079,
"Couldn't create config.changelog collection: {error}",
"Couldn't create config.changelog collection",
"error"_attr = result);
return result;
}
}
return _log(opCtx, kChangeLogCollectionName, what, ns, detail, writeConcern);
}
Status ShardingLogging::_log(OperationContext* opCtx,
const StringData logCollName,
const StringData what,
const StringData operationNS,
const BSONObj& detail,
const WriteConcernOptions& writeConcern) {
Date_t now = Grid::get(opCtx)->getNetwork()->now();
const std::string serverName = str::stream()
<< Grid::get(opCtx)->getNetwork()->getHostName() << ":" << serverGlobalParams.port;
const std::string changeId = str::stream()
<< serverName << "-" << now.toString() << "-" << OID::gen();
ChangeLogType changeLog;
changeLog.setChangeId(changeId);
changeLog.setServer(serverName);
if (serverGlobalParams.clusterRole == ClusterRole::ConfigServer) {
changeLog.setShard("config");
} else {
auto shardingState = ShardingState::get(opCtx);
if (shardingState->enabled()) {
changeLog.setShard(shardingState->shardId().toString());
}
}
changeLog.setClientAddr(opCtx->getClient()->clientAddress(true));
changeLog.setTime(now);
changeLog.setNS(operationNS.toString());
changeLog.setWhat(what.toString());
changeLog.setDetails(detail);
BSONObj changeLogBSON = changeLog.toBSON();
LOGV2(22080,
"About to log metadata event into {namespace}: {event}",
"About to log metadata event",
"namespace"_attr = logCollName,
"event"_attr = redact(changeLogBSON));
const NamespaceString nss("config", logCollName);
Status result = Grid::get(opCtx)->catalogClient()->insertConfigDocument(
opCtx, nss, changeLogBSON, writeConcern);
if (!result.isOK()) {
LOGV2_WARNING(22081,
"Error encountered while logging config change with ID [{changeId}] into "
"collection {namespace}: {error}",
"Error encountered while logging config change",
"changeId"_attr = changeId,
"namespace"_attr = logCollName,
"error"_attr = redact(result));
}
return result;
}
Status ShardingLogging::_createCappedConfigCollection(OperationContext* opCtx,
StringData collName,
int cappedSize,
const WriteConcernOptions& writeConcern) {
BSONObj createCmd =
BSON("create" << collName << "capped" << true << "size" << cappedSize
<< WriteConcernOptions::kWriteConcernField << writeConcern.toBSON());
auto result =
Grid::get(opCtx)->shardRegistry()->getConfigShard()->runCommandWithFixedRetryAttempts(
opCtx,
ReadPreferenceSetting{ReadPreference::PrimaryOnly},
"config",
createCmd,
Shard::kDefaultConfigCommandTimeout,
Shard::RetryPolicy::kIdempotent);
if (!result.isOK()) {
return result.getStatus();
}
if (!result.getValue().commandStatus.isOK()) {
if (result.getValue().commandStatus == ErrorCodes::NamespaceExists) {
if (result.getValue().writeConcernStatus.isOK()) {
return Status::OK();
} else {
return result.getValue().writeConcernStatus;
}
} else {
return result.getValue().commandStatus;
}
}
return result.getValue().writeConcernStatus;
}
} // namespace mongo
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