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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::kSharding
#include "mongo/platform/basic.h"
#include "mongo/db/auth/action_set.h"
#include "mongo/db/auth/action_type.h"
#include "mongo/db/auth/authorization_manager.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/auth/privilege.h"
#include "mongo/db/client.h"
#include "mongo/db/commands.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/lasterror.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/repl/replication_coordinator_global.h"
#include "mongo/db/s/collection_metadata.h"
#include "mongo/db/s/collection_sharding_state.h"
#include "mongo/db/s/migration_source_manager.h"
#include "mongo/db/s/sharding_state.h"
#include "mongo/db/wire_version.h"
#include "mongo/s/catalog_cache.h"
#include "mongo/s/chunk_version.h"
#include "mongo/s/client/shard_registry.h"
#include "mongo/s/grid.h"
#include "mongo/util/log.h"
#include "mongo/util/stringutils.h"
namespace mongo {
namespace {
/**
* Takes a single argument, a namespace string, and forces this node to refresh its routing table
* cache entry for that namespace.
*/
class ForceRoutingTableRefresh : public BasicCommand {
public:
ForceRoutingTableRefresh() : BasicCommand("forceRoutingTableRefresh") {}
void help(std::stringstream& help) const override {
help << "internal command to force a node to refresh its routing table entry for a "
"namespace";
}
bool adminOnly() const override {
return true;
}
bool slaveOk() const override {
return true;
}
virtual bool supportsWriteConcern(const BSONObj& cmd) const override {
return false;
}
std::string parseNs(const std::string& dbname, const BSONObj& cmdObj) const override {
return parseNsFullyQualified(dbname, cmdObj);
}
Status checkAuthForCommand(Client* client,
const std::string& dbname,
const BSONObj& cmdObj) override {
if (!AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
ResourcePattern::forClusterResource(), ActionType::internal)) {
return Status(ErrorCodes::Unauthorized, "Unauthorized");
}
return Status::OK();
}
void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out) override {
ActionSet actions;
actions.addAction(ActionType::internal);
out->push_back(Privilege(ResourcePattern::forClusterResource(), actions));
}
bool run(OperationContext* opCtx,
const std::string& dbname,
const BSONObj& cmdObj,
std::string& errmsg,
BSONObjBuilder& result) {
auto shardingState = ShardingState::get(opCtx);
uassertStatusOK(shardingState->canAcceptShardedCommands());
uassert(ErrorCodes::IllegalOperation,
"can't issue forceRoutingTableRefresh from 'eval'",
!opCtx->getClient()->isInDirectClient());
NamespaceString nss(parseNs(dbname, cmdObj));
log() << "forcing routing table refresh for " << nss;
ChunkVersion unusedShardVersion;
uassertStatusOK(
ShardingState::get(opCtx)->refreshMetadataNow(opCtx, nss, &unusedShardVersion));
auto routingInfo =
uassertStatusOK(Grid::get(opCtx)->catalogCache()->getCollectionRoutingInfo(opCtx, nss));
const auto collectionVersion =
routingInfo.cm() ? routingInfo.cm()->getVersion() : ChunkVersion::UNSHARDED();
collectionVersion.appendWithFieldForCommands(&result, "collectionVersion");
return true;
}
} forceRoutingTableRefreshCmd;
} // namespace
} // namespace mongo
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