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// pdfile.cpp
/**
* 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.
*/
/*
todo:
_ table scans must be sequential, not next/prev pointers
_ coalesce deleted
_ disallow system* manipulations from the database.
*/
#include "mongo/pch.h"
#include "mongo/db/pdfile.h"
#include <algorithm>
#include <boost/filesystem/operations.hpp>
#include <boost/optional/optional.hpp>
#include <list>
#include "mongo/base/counter.h"
#include "mongo/base/owned_pointer_vector.h"
#include "mongo/db/audit.h"
#include "mongo/db/auth/auth_index_d.h"
#include "mongo/db/auth/user_document_parser.h"
#include "mongo/db/pdfile_private.h"
#include "mongo/db/background.h"
#include "mongo/db/clientcursor.h"
#include "mongo/db/cloner.h"
#include "mongo/db/commands/server_status.h"
#include "mongo/db/curop-inl.h"
#include "mongo/db/db.h"
#include "mongo/db/dbhelpers.h"
#include "mongo/db/extsort.h"
#include "mongo/db/index_legacy.h"
#include "mongo/db/index_names.h"
#include "mongo/db/index/index_descriptor.h"
#include "mongo/db/index/index_access_method.h"
#include "mongo/db/instance.h"
#include "mongo/db/kill_current_op.h"
#include "mongo/db/lasterror.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/ops/delete.h"
#include "mongo/db/repair_database.h"
#include "mongo/db/repl/is_master.h"
#include "mongo/db/repl/oplog.h"
#include "mongo/db/storage_options.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/util/assert_util.h"
#include "mongo/util/file.h"
#include "mongo/util/file_allocator.h"
#include "mongo/util/mmap.h"
#include "mongo/util/processinfo.h"
#include "mongo/db/stats/timer_stats.h"
#include "mongo/db/stats/counters.h"
#include "mongo/db/structure/catalog/namespace_details.h"
namespace mongo {
/* ----------------------------------------- */
string pidfilepath;
DatabaseHolder _dbHolder;
DatabaseHolder& dbHolderUnchecked() {
return _dbHolder;
}
void ensureIdIndexForNewNs( Collection* collection ) {
if ( collection->ns().isSystem() && !legalClientSystemNS( collection->ns().ns(), false ) )
return;
uassertStatusOK( collection->getIndexCatalog()->ensureHaveIdIndex() );
}
/*---------------------------------------------------------------------*/
/** { ..., capped: true, size: ..., max: ... }
* @param createDefaultIndexes - if false, defers id (and other) index creation.
* @return true if successful
*/
Status userCreateNS( Database* db,
const StringData& ns,
BSONObj options,
bool logForReplication,
bool createDefaultIndexes ) {
invariant( db );
LOG(1) << "create collection " << ns << ' ' << options;
if ( !NamespaceString::validCollectionComponent(ns) )
return Status( ErrorCodes::InvalidNamespace,
str::stream() << "invalid ns: " << ns );
Collection* collection = db->getCollection( ns );
if ( collection )
return Status( ErrorCodes::NamespaceExists,
"collection already exists" );
CollectionOptions collectionOptions;
Status status = collectionOptions.parse( options );
if ( !status.isOK() )
return status;
invariant( db->createCollection( ns, collectionOptions, true, createDefaultIndexes ) );
if ( logForReplication ) {
if ( options.getField( "create" ).eoo() ) {
BSONObjBuilder b;
b << "create" << nsToCollectionSubstring( ns );
b.appendElements( options );
options = b.obj();
}
string logNs = nsToDatabase(ns) + ".$cmd";
logOp("c", logNs.c_str(), options);
}
return Status::OK();
}
void dropAllDatabasesExceptLocal() {
Lock::GlobalWrite lk;
vector<string> n;
getDatabaseNames(n);
if( n.size() == 0 ) return;
log() << "dropAllDatabasesExceptLocal " << n.size() << endl;
for( vector<string>::iterator i = n.begin(); i != n.end(); i++ ) {
if( *i != "local" ) {
Client::Context ctx(*i);
dropDatabase(ctx.db());
}
}
}
void dropDatabase(Database* db ) {
invariant( db );
string name = db->name(); // just to have safe
LOG(1) << "dropDatabase " << name << endl;
Lock::assertWriteLocked( name );
BackgroundOperation::assertNoBgOpInProgForDb(name.c_str());
audit::logDropDatabase( currentClient.get(), name );
// Not sure we need this here, so removed. If we do, we need to move it down
// within other calls both (1) as they could be called from elsewhere and
// (2) to keep the lock order right - groupcommitmutex must be locked before
// mmmutex (if both are locked).
//
// RWLockRecursive::Exclusive lk(MongoFile::mmmutex);
getDur().syncDataAndTruncateJournal();
Database::closeDatabase( name, db->path() );
db = 0; // d is now deleted
_deleteDataFiles( name );
}
} // namespace mongo
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