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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_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/commands.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/s/collection_metadata.h"
#include "mongo/db/s/collection_sharding_state.h"
#include "mongo/db/s/sharded_connection_info.h"
#include "mongo/db/s/sharding_state.h"
#include "mongo/util/log.h"
#include "mongo/util/stringutils.h"
namespace mongo {
namespace {
class GetShardVersion : public Command {
public:
GetShardVersion() : Command("getShardVersion") {}
void help(std::stringstream& help) const override {
help << " example: { getShardVersion : 'alleyinsider.foo' } ";
}
virtual bool supportsWriteConcern(const BSONObj& cmd) const override {
return false;
}
bool slaveOk() const override {
return false;
}
bool adminOnly() const override {
return true;
}
Status checkAuthForCommand(Client* client,
const std::string& dbname,
const BSONObj& cmdObj) override {
if (!AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
ResourcePattern::forExactNamespace(NamespaceString(parseNs(dbname, cmdObj))),
ActionType::getShardVersion)) {
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* txn,
const std::string& dbname,
BSONObj& cmdObj,
int options,
std::string& errmsg,
BSONObjBuilder& result) override {
const NamespaceString nss(parseNs(dbname, cmdObj));
uassert(ErrorCodes::InvalidNamespace,
str::stream() << nss.ns() << " is not a valid namespace",
nss.isValid());
ShardingState* const gss = ShardingState::get(txn);
if (gss->enabled()) {
result.append("configServer", gss->getConfigServer(txn).toString());
} else {
result.append("configServer", "");
}
ShardedConnectionInfo* const sci = ShardedConnectionInfo::get(txn->getClient(), false);
result.appendBool("inShardedMode", sci != nullptr);
if (sci) {
result.appendTimestamp("mine", sci->getVersion(nss.ns()).toLong());
} else {
result.appendTimestamp("mine", 0);
}
AutoGetCollection autoColl(txn, nss, MODE_IS);
CollectionShardingState* const css = CollectionShardingState::get(txn, nss);
ScopedCollectionMetadata metadata;
if (css) {
metadata = css->getMetadata();
}
if (metadata) {
result.appendTimestamp("global", metadata->getShardVersion().toLong());
} else {
result.appendTimestamp("global", ChunkVersion(0, 0, OID()).toLong());
}
if (cmdObj["fullMetadata"].trueValue()) {
BSONObjBuilder metadataBuilder(result.subobjStart("metadata"));
if (metadata) {
metadata->toBSONBasic(metadataBuilder);
BSONArrayBuilder chunksArr(metadataBuilder.subarrayStart("chunks"));
metadata->toBSONChunks(chunksArr);
chunksArr.doneFast();
BSONArrayBuilder pendingArr(metadataBuilder.subarrayStart("pending"));
metadata->toBSONPending(pendingArr);
pendingArr.doneFast();
}
metadataBuilder.doneFast();
}
return true;
}
} getShardVersionCmd;
} // namespace
} // namespace mongo
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