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/**
* Copyright (C) 2012 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.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kIndex
#include "mongo/platform/basic.h"
#include "mongo/db/index_rebuilder.h"
#include <list>
#include <string>
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/auth/user_name.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/db/catalog/database.h"
#include "mongo/db/catalog/database_catalog_entry.h"
#include "mongo/db/catalog/index_create.h"
#include "mongo/db/client.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/service_context.h"
#include "mongo/db/storage/storage_engine.h"
#include "mongo/util/log.h"
#include "mongo/util/scopeguard.h"
namespace mongo {
using std::endl;
using std::string;
using std::vector;
namespace {
void checkNS(OperationContext* opCtx, const std::list<std::string>& nsToCheck) {
bool firstTime = true;
for (std::list<std::string>::const_iterator it = nsToCheck.begin(); it != nsToCheck.end();
++it) {
NamespaceString nss(*it);
LOG(3) << "IndexRebuilder::checkNS: " << nss.ns();
// This write lock is held throughout the index building process for this namespace.
Lock::DBLock lk(opCtx, nss.db(), MODE_X);
OldClientContext ctx(opCtx, nss.ns());
Collection* collection = ctx.db()->getCollection(opCtx, nss);
if (collection == NULL)
continue;
IndexCatalog* indexCatalog = collection->getIndexCatalog();
if (collection->ns().isOplog() && indexCatalog->numIndexesTotal(opCtx) > 0) {
warning() << nss.ns() << " had illegal indexes, removing";
indexCatalog->dropAllIndexes(opCtx, true);
continue;
}
MultiIndexBlock indexer(opCtx, collection);
{
WriteUnitOfWork wunit(opCtx);
vector<BSONObj> indexesToBuild = indexCatalog->getAndClearUnfinishedIndexes(opCtx);
// The indexes have now been removed from system.indexes, so the only record is
// in-memory. If there is a journal commit between now and when insert() rewrites
// the entry and the db crashes before the new system.indexes entry is journalled,
// the index will be lost forever. Thus, we must stay in the same WriteUnitOfWork
// to ensure that no journaling will happen between now and the entry being
// re-written in MultiIndexBlock::init(). The actual index building is done outside
// of this WUOW.
if (indexesToBuild.empty()) {
continue;
}
log() << "found " << indexesToBuild.size() << " interrupted index build(s) on "
<< nss.ns();
if (firstTime) {
log() << "note: restart the server with --noIndexBuildRetry "
<< "to skip index rebuilds";
firstTime = false;
}
if (!serverGlobalParams.indexBuildRetry) {
log() << " not rebuilding interrupted indexes";
wunit.commit();
continue;
}
uassertStatusOK(indexer.init(indexesToBuild));
wunit.commit();
}
try {
uassertStatusOK(indexer.insertAllDocumentsInCollection());
WriteUnitOfWork wunit(opCtx);
indexer.commit();
wunit.commit();
} catch (const DBException& e) {
error() << "Index rebuilding did not complete: " << redact(e);
log() << "note: restart the server with --noIndexBuildRetry to skip index rebuilds";
// If anything went wrong, leave the indexes partially built so that we pick them up
// again on restart.
indexer.abortWithoutCleanup();
fassertFailedNoTrace(26100);
} catch (...) {
// If anything went wrong, leave the indexes partially built so that we pick them up
// again on restart.
indexer.abortWithoutCleanup();
throw;
}
}
}
} // namespace
void restartInProgressIndexesFromLastShutdown(OperationContext* opCtx) {
AuthorizationSession::get(opCtx->getClient())->grantInternalAuthorization();
std::vector<std::string> dbNames;
StorageEngine* storageEngine = getGlobalServiceContext()->getGlobalStorageEngine();
storageEngine->listDatabases(&dbNames);
try {
std::list<std::string> collNames;
for (std::vector<std::string>::const_iterator dbName = dbNames.begin();
dbName < dbNames.end();
++dbName) {
AutoGetDb autoDb(opCtx, *dbName, MODE_S);
Database* db = autoDb.getDb();
db->getDatabaseCatalogEntry()->getCollectionNamespaces(&collNames);
}
checkNS(opCtx, collNames);
} catch (const DBException& e) {
error() << "Index verification did not complete: " << redact(e);
fassertFailedNoTrace(18643);
}
LOG(1) << "checking complete";
}
}
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