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/**
* Copyright (C) 2015 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.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/catalog/create_collection.h"
#include "mongo/bson/bsonobj.h"
#include "mongo/db/concurrency/write_conflict_exception.h"
#include "mongo/db/curop.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/ops/insert.h"
#include "mongo/db/repl/replication_coordinator_global.h"
namespace mongo {
Status createCollection(OperationContext* txn, const std::string& dbName, const BSONObj& cmdObj) {
BSONObjIterator it(cmdObj);
// Extract ns from first cmdObj element.
BSONElement firstElt = it.next();
uassert(15888, "must pass name of collection to create", firstElt.valuestrsafe()[0] != '\0');
Status status = userAllowedCreateNS(dbName, firstElt.valuestr());
if (!status.isOK()) {
return status;
}
NamespaceString nss(dbName, firstElt.valuestrsafe());
// Build options object from remaining cmdObj elements.
BSONObjBuilder optionsBuilder;
while (it.more()) {
optionsBuilder.append(it.next());
}
BSONObj options = optionsBuilder.obj();
uassert(14832,
"specify size:<n> when capped is true",
!options["capped"].trueValue() || options["size"].isNumber() ||
options.hasField("$nExtents"));
MONGO_WRITE_CONFLICT_RETRY_LOOP_BEGIN {
ScopedTransaction transaction(txn, MODE_IX);
Lock::DBLock dbXLock(txn->lockState(), dbName, MODE_X);
OldClientContext ctx(txn, nss.ns());
if (txn->writesAreReplicated() &&
!repl::getGlobalReplicationCoordinator()->canAcceptWritesFor(nss)) {
return Status(ErrorCodes::NotMaster,
str::stream() << "Not primary while creating collection " << nss.ns());
}
WriteUnitOfWork wunit(txn);
// Create collection.
status = userCreateNS(txn, ctx.db(), nss.ns(), options);
if (!status.isOK()) {
return status;
}
wunit.commit();
}
MONGO_WRITE_CONFLICT_RETRY_LOOP_END(txn, "create", nss.ns());
return Status::OK();
}
} // namespace mongo
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