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// dump.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/>.
*/
#include "../stdafx.h"
#include "../client/dbclient.h"
#include <boost/program_options.hpp>
#include <fcntl.h>
namespace po = boost::program_options;
namespace dump {
void doCollection( DBClientConnection & conn , const char * coll , path outputFile ){
cout << "\t" << coll << " to " << outputFile.string() << endl;
int out = open( outputFile.string().c_str() , O_WRONLY | O_CREAT | O_TRUNC , 0666 );
assert( out );
BSONObjBuilder query;
auto_ptr<DBClientCursor> cursor = conn.query( coll , query.doneAndDecouple() );
int num = 0;
while ( cursor->more() ){
BSONObj obj = cursor->next();
write( out , obj.objdata() , obj.objsize() );
num++;
}
cout << "\t\t " << num << " objects" << endl;
close( out );
}
void go( DBClientConnection & conn , const char * db , const path outdir ){
cout << "DATABASE: " << db << endl;
create_directories( outdir );
string sns = db;
sns += ".system.namespaces";
BSONObjBuilder query;
auto_ptr<DBClientCursor> cursor = conn.query( sns.c_str() , query.doneAndDecouple() );
while ( cursor->more() ){
BSONObj obj = cursor->next();
if ( obj.toString().find( ".$" ) != string::npos )
continue;
const string name = obj.getField( "name" ).valuestr();
const string filename = name.substr( strlen( db ) + 1 );
doCollection( conn , name.c_str() , outdir / ( filename + ".bson" ) );
}
}
void go( const char * host , const char * db , const char * outdir ){
DBClientConnection conn;
string errmsg;
if ( ! conn.connect( host , errmsg ) ){
cout << "couldn't connect : " << errmsg << endl;
throw -11;
}
path root(outdir);
if ( strlen( db ) == 1 && db[0] == '*' ){
cout << "all dbs" << endl;
BSONObjBuilder query;
query.appendBool( "listDatabases" , 1 );
BSONObj res = conn.findOne( "admin.$cmd" , query.doneAndDecouple() );
BSONObj dbs = res.getField( "databases" ).embeddedObjectUserCheck();
set<string> keys;
dbs.getFieldNames( keys );
for ( set<string>::iterator i = keys.begin() ; i != keys.end() ; i++ ){
string key = *i;
BSONObj db = dbs.getField( key ).embeddedObjectUserCheck();
const char * dbName = db.getField( "name" ).valuestr();
if ( (string)dbName == "local" )
continue;
go ( conn , dbName , root / dbName );
}
}
else {
go( conn , db , root / db );
}
}
}
int main( int argc , char ** argv ){
boost::filesystem::path::default_name_check( boost::filesystem::no_check );
po::options_description options("dump parameters");
options.add_options()
("help", "produce help message")
("host,h", po::value<string>() , "mongo host to connecto to")
("db,d" , po::value<string>() , "database to dump" )
("out" , po::value<string>() , "output directory" )
;
po::variables_map vm;
po::store(po::parse_command_line(argc, argv, options), vm);
po::notify(vm);
if ( vm.count("help") ){
options.print( cerr );
return 1;
}
const char * host = "127.0.0.1";
const char * db = "*";
const char * outdir = "dump";
if ( vm.count( "host" ) )
host = vm["host"].as<string>().c_str();
if ( vm.count( "db" ) )
db = vm["db"].as<string>().c_str();
if ( vm.count( "out" ) )
outdir = vm["db"].as<string>().c_str();
cout << "mongo dump" << endl;
cout << "\t host \t" << host << endl;
cout << "\t db \t" << db << endl;
cout << "\t output dir \t" << outdir << endl;
dump::go( host , db , outdir );
}
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