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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.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/repl/oplog_buffer_collection.h"
#include "mongo/db/catalog/collection_options.h"
#include "mongo/db/catalog/database.h"
#include "mongo/db/client.h"
#include "mongo/db/concurrency/write_conflict_exception.h"
#include "mongo/db/curop.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/operation_context.h"
namespace mongo {
namespace repl {
namespace {
const char kDefaultOplogCollectionNamespace[] = "local.oplog.initialSyncTempBuffer";
/**
* Creates an operation context for the current oplog buffer operation.
* Crashes if there is already an existing operation context registered with the current client.
*/
ServiceContext::UniqueOperationContext makeOperationContext() {
return cc().makeOperationContext();
}
} // namespace
NamespaceString OplogBufferCollection::getDefaultNamespace() {
return NamespaceString(kDefaultOplogCollectionNamespace);
}
OplogBufferCollection::OplogBufferCollection() : OplogBufferCollection(getDefaultNamespace()) {}
OplogBufferCollection::OplogBufferCollection(const NamespaceString& nss) : _nss(nss) {}
NamespaceString OplogBufferCollection::getNamespace() const {
return _nss;
}
void OplogBufferCollection::startup() {
auto txnPtr = makeOperationContext();
auto txn = txnPtr.get();
// TODO: use storage interface to create collection.
MONGO_WRITE_CONFLICT_RETRY_LOOP_BEGIN {
AutoGetOrCreateDb databaseWriteGuard(txn, _nss.db(), MODE_X);
auto db = databaseWriteGuard.getDb();
invariant(db);
WriteUnitOfWork wuow(txn);
auto coll = db->createCollection(txn, _nss.ns(), CollectionOptions());
invariant(coll);
wuow.commit();
}
MONGO_WRITE_CONFLICT_RETRY_LOOP_END(txn, "OplogBufferCollection::startup", _nss.ns());
}
void OplogBufferCollection::shutdown() {}
void OplogBufferCollection::pushEvenIfFull(const Value& value) {}
void OplogBufferCollection::push(const Value& value) {}
bool OplogBufferCollection::pushAllNonBlocking(Batch::const_iterator begin,
Batch::const_iterator end) {
return false;
}
void OplogBufferCollection::waitForSpace(std::size_t size) {}
bool OplogBufferCollection::isEmpty() const {
return true;
}
std::size_t OplogBufferCollection::getMaxSize() const {
return 0;
}
std::size_t OplogBufferCollection::getSize() const {
return 0;
}
std::size_t OplogBufferCollection::getCount() const {
return 0;
}
void OplogBufferCollection::clear() {}
bool OplogBufferCollection::tryPop(Value* value) {
return false;
}
OplogBuffer::Value OplogBufferCollection::blockingPop() {
return {};
}
bool OplogBufferCollection::blockingPeek(Value* value, Seconds waitDuration) {
return false;
}
bool OplogBufferCollection::peek(Value* value) {
return false;
}
boost::optional<OplogBuffer::Value> OplogBufferCollection::lastObjectPushed() const {
return {};
}
} // namespace repl
} // namespace mongo
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