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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::kCommand
#include "mongo/platform/basic.h"
#include <list>
#include <set>
#include <vector>
#include "mongo/bson/simple_bsonelement_comparator.h"
#include "mongo/bson/simple_bsonobj_comparator.h"
#include "mongo/bson/util/bson_extract.h"
#include "mongo/client/connpool.h"
#include "mongo/db/audit.h"
#include "mongo/db/auth/action_set.h"
#include "mongo/db/auth/action_type.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/client.h"
#include "mongo/db/commands.h"
#include "mongo/db/hasher.h"
#include "mongo/db/index/index_descriptor.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/query/collation/collator_factory_interface.h"
#include "mongo/db/write_concern_options.h"
#include "mongo/s/balancer_configuration.h"
#include "mongo/s/catalog/sharding_catalog_client.h"
#include "mongo/s/catalog_cache.h"
#include "mongo/s/client/shard_registry.h"
#include "mongo/s/cluster_commands_helpers.h"
#include "mongo/s/config_server_client.h"
#include "mongo/s/grid.h"
#include "mongo/s/request_types/migration_secondary_throttle_options.h"
#include "mongo/s/request_types/shard_collection_gen.h"
#include "mongo/util/log.h"
#include "mongo/util/scopeguard.h"
namespace mongo {
namespace {
class ShardCollectionCmd : public BasicCommand {
public:
ShardCollectionCmd() : BasicCommand("shardCollection", "shardcollection") {}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kAlways;
}
bool adminOnly() const override {
return true;
}
bool supportsWriteConcern(const BSONObj& cmd) const override {
return true;
}
std::string help() const override {
return "Shard a collection. Requires key. Optional unique."
" Sharding must already be enabled for the database.\n"
" { enablesharding : \"<dbname>\" }\n";
}
Status checkAuthForCommand(Client* client,
const std::string& dbname,
const BSONObj& cmdObj) const override {
if (!AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
ResourcePattern::forExactNamespace(NamespaceString(parseNs(dbname, cmdObj))),
ActionType::enableSharding)) {
return Status(ErrorCodes::Unauthorized, "Unauthorized");
}
return Status::OK();
}
std::string parseNs(const std::string& dbname, const BSONObj& cmdObj) const override {
return CommandHelpers::parseNsFullyQualified(cmdObj);
}
bool run(OperationContext* opCtx,
const std::string& dbname,
const BSONObj& cmdObj,
BSONObjBuilder& result) override {
const NamespaceString nss(parseNs(dbname, cmdObj));
auto shardCollRequest =
ShardCollection::parse(IDLParserErrorContext("ShardCollection"), cmdObj);
ConfigsvrShardCollectionRequest configShardCollRequest;
configShardCollRequest.set_configsvrShardCollection(nss);
configShardCollRequest.setKey(shardCollRequest.getKey());
configShardCollRequest.setUnique(shardCollRequest.getUnique());
configShardCollRequest.setNumInitialChunks(shardCollRequest.getNumInitialChunks());
configShardCollRequest.setCollation(shardCollRequest.getCollation());
configShardCollRequest.setImplicitlyCreateIndex(
shardCollRequest.getImplicitlyCreateIndex());
configShardCollRequest.setEnforceUniquenessCheck(
shardCollRequest.getEnforceUniquenessCheck());
// Invalidate the routing table cache entry for this collection so that we reload the
// collection the next time it's accessed, even if we receive a failure, e.g. NetworkError.
ON_BLOCK_EXIT(
[opCtx, nss] { Grid::get(opCtx)->catalogCache()->invalidateShardedCollection(nss); });
auto configShard = Grid::get(opCtx)->shardRegistry()->getConfigShard();
auto cmdResponse = uassertStatusOK(configShard->runCommandWithFixedRetryAttempts(
opCtx,
ReadPreferenceSetting(ReadPreference::PrimaryOnly),
"admin",
CommandHelpers::appendMajorityWriteConcern(
CommandHelpers::appendPassthroughFields(cmdObj, configShardCollRequest.toBSON())),
Shard::RetryPolicy::kIdempotent));
CommandHelpers::filterCommandReplyForPassthrough(cmdResponse.response, &result);
return true;
}
} shardCollectionCmd;
} // namespace
} // namespace mongo
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