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/**
* Copyright (C) 2016 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_type.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/auth/privilege.h"
#include "mongo/db/commands.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/operation_context.h"
#include "mongo/s/catalog/sharding_catalog_manager.h"
#include "mongo/s/grid.h"
#include "mongo/s/request_types/merge_chunk_request_type.h"
#include "mongo/util/log.h"
#include "mongo/util/mongoutils/str.h"
namespace mongo {
namespace {
using std::string;
/**
* Internal sharding command run on config servers to merge a set of chunks.
*
* Format:
* {
* _configsvrCommitChunkMerge: <string namespace>,
* collEpoch: <OID epoch>,
* chunkBoundaries: [
* <BSONObj key1>,
* <BSONObj key2>,
* ...
* ],
* shard: <string shard>,
* writeConcern: <BSONObj>
* }
*/
class ConfigSvrMergeChunkCommand : public Command {
public:
ConfigSvrMergeChunkCommand() : Command("_configsvrCommitChunkMerge") {}
void help(std::stringstream& help) const override {
help << "Internal command, which is sent by a shard to the sharding config server. Do "
"not call directly. Receives, validates, and processes a MergeChunkRequest";
}
bool slaveOk() const override {
return false;
}
bool adminOnly() const override {
return true;
}
bool supportsWriteConcern(const BSONObj& cmd) const override {
return true;
}
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();
}
std::string parseNs(const std::string& dbname, const BSONObj& cmdObj) const override {
return parseNsFullyQualified(dbname, cmdObj);
}
bool run(OperationContext* opCtx,
const std::string& dbName,
BSONObj& cmdObj,
int options,
std::string& errmsg,
BSONObjBuilder& result) override {
if (serverGlobalParams.clusterRole != ClusterRole::ConfigServer) {
uasserted(ErrorCodes::IllegalOperation,
"_configsvrCommitChunkMerge can only be run on config servers");
}
auto parsedRequest = uassertStatusOK(MergeChunkRequest::parseFromConfigCommand(cmdObj));
Status mergeChunkResult =
Grid::get(opCtx)->catalogManager()->commitChunkMerge(opCtx,
parsedRequest.getNamespace(),
parsedRequest.getEpoch(),
parsedRequest.getChunkBoundaries(),
parsedRequest.getShardName());
if (!mergeChunkResult.isOK()) {
return appendCommandStatus(result, mergeChunkResult);
}
return true;
}
} configsvrMergeChunkCmd;
} // namespace
} // namespace mongo
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