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/**
* Copyright (C) 2008 10gen 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/pch.h"
#include "mongo/db/repl/initial_sync.h"
#include "mongo/db/repl/oplog.h"
#include "mongo/db/repl/rs.h"
namespace mongo {
extern unsigned replSetForceInitialSyncFailure;
namespace replset {
static AtomicUInt32 replWriterWorkerId;
void initializeWriterThread() {
// Only do this once per thread
if (!ClientBasic::getCurrent()) {
string threadName = str::stream() << "repl writer worker "
<< replWriterWorkerId.addAndFetch(1);
Client::initThread( threadName.c_str() );
// allow us to get through the magic barrier
Lock::ParallelBatchWriterMode::iAmABatchParticipant();
replLocalAuth();
}
}
// This free function is used by the writer threads to apply each op
void multiSyncApply(const std::vector<BSONObj>& ops, SyncTail* st) {
initializeWriterThread();
// convert update operations only for 2.2.1 or greater, because we need guaranteed
// idempotent operations for this to work. See SERVER-6825
bool convertUpdatesToUpserts = theReplSet->oplogVersion > 1 ? true : false;
for (std::vector<BSONObj>::const_iterator it = ops.begin();
it != ops.end();
++it) {
try {
if (!st->syncApply(*it, convertUpdatesToUpserts)) {
fassertFailedNoTrace(16359);
}
} catch (const DBException& e) {
error() << "writer worker caught exception: " << causedBy(e)
<< " on: " << it->toString() << endl;
fassertFailedNoTrace(16360);
}
}
}
// This free function is used by the initial sync writer threads to apply each op
void multiInitialSyncApply(const std::vector<BSONObj>& ops, SyncTail* st) {
initializeWriterThread();
for (std::vector<BSONObj>::const_iterator it = ops.begin();
it != ops.end();
++it) {
try {
if (!st->syncApply(*it)) {
bool status;
{
Lock::GlobalWrite lk;
status = st->shouldRetry(*it);
}
if (status) {
// retry
if (!st->syncApply(*it)) {
fassertFailedNoTrace(15915);
}
}
// If shouldRetry() returns false, fall through.
// This can happen if the document that was moved and missed by Cloner
// subsequently got deleted and no longer exists on the Sync Target at all
}
}
catch (const DBException& e) {
error() << "exception: " << causedBy(e) << " on: " << it->toString() << endl;
fassertFailedNoTrace(16361);
}
}
}
InitialSync::InitialSync(BackgroundSyncInterface *q) :
SyncTail(q) {}
InitialSync::~InitialSync() {}
/* initial oplog application, during initial sync, after cloning.
*/
BSONObj InitialSync::oplogApplication(const BSONObj& applyGTEObj, const BSONObj& minValidObj) {
if (replSetForceInitialSyncFailure > 0) {
log() << "replSet test code invoked, forced InitialSync failure: "
<< replSetForceInitialSyncFailure << rsLog;
replSetForceInitialSyncFailure--;
throw DBException("forced error",0);
}
// create the initial oplog entry
syncApply(applyGTEObj);
_logOpObjRS(applyGTEObj);
return oplogApplySegment(applyGTEObj, minValidObj, multiInitialSyncApply);
}
} // namespace replset
} // namespace mongo
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