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// restore.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 "../pch.h"
#include "../client/dbclient.h"
#include "../util/mmap.h"
#include "tool.h"
#include <boost/program_options.hpp>
#include <fcntl.h>
using namespace mongo;
namespace po = boost::program_options;
class Restore : public BSONTool {
public:
bool _drop;
const char * _curns;
Restore() : BSONTool( "restore" ) , _drop(false){
add_options()
("drop" , "drop each collection before import" )
;
add_hidden_options()
("dir", po::value<string>()->default_value("dump"), "directory to restore from")
("indexesLast" , "wait to add indexes (now default)") // left in for backwards compatibility
;
addPositionArg("dir", 1);
}
virtual void printExtraHelp(ostream& out) {
out << "usage: " << _name << " [options] [directory or filename to restore from]" << endl;
}
virtual int doRun(){
auth();
path root = getParam("dir");
// check if we're actually talking to a machine that can write
if (!isMaster()) {
return -1;
}
_drop = hasParam( "drop" );
/* If _db is not "" then the user specified a db name to restore as.
*
* In that case we better be given either a root directory that
* contains only .bson files or a single .bson file (a db).
*
* In the case where a collection name is specified we better be
* given either a root directory that contains only a single
* .bson file, or a single .bson file itself (a collection).
*/
drillDown(root, _db != "", _coll != "");
conn().getLastError();
return EXIT_CLEAN;
}
void drillDown( path root, bool use_db = false, bool use_coll = false ) {
log(2) << "drillDown: " << root.string() << endl;
if ( is_directory( root ) ) {
directory_iterator end;
directory_iterator i(root);
path indexes;
while ( i != end ) {
path p = *i;
i++;
if (use_db) {
if (is_directory(p)) {
cerr << "ERROR: root directory must be a dump of a single database" << endl;
cerr << " when specifying a db name with --db" << endl;
printHelp(cout);
return;
}
}
if (use_coll) {
if (is_directory(p) || i != end) {
cerr << "ERROR: root directory must be a dump of a single collection" << endl;
cerr << " when specifying a collection name with --collection" << endl;
printHelp(cout);
return;
}
}
if ( p.leaf() == "system.indexes.bson" )
indexes = p;
else
drillDown(p, use_db, use_coll);
}
if (!indexes.empty())
drillDown(indexes, use_db, use_coll);
return;
}
if ( ! ( endsWith( root.string().c_str() , ".bson" ) ||
endsWith( root.string().c_str() , ".bin" ) ) ) {
cerr << "don't know what to do with [" << root.string() << "]" << endl;
return;
}
log() << root.string() << endl;
if ( root.leaf() == "system.profile.bson" ){
log() << "\t skipping" << endl;
return;
}
string ns;
if (use_db) {
ns += _db;
}
else {
string dir = root.branch_path().string();
if ( dir.find( "/" ) == string::npos )
ns += dir;
else
ns += dir.substr( dir.find_last_of( "/" ) + 1 );
if ( ns.size() == 0 )
ns = "test";
}
assert( ns.size() );
if (use_coll) {
ns += "." + _coll;
} else {
string l = root.leaf();
l = l.substr( 0 , l.find_last_of( "." ) );
ns += "." + l;
}
out() << "\t going into namespace [" << ns << "]" << endl;
if ( _drop ){
out() << "\t dropping" << endl;
conn().dropCollection( ns );
}
_curns = ns.c_str();
processFile( root );
}
virtual void gotObject( const BSONObj& obj ){
conn().insert( _curns , obj );
}
};
int main( int argc , char ** argv ) {
Restore restore;
return restore.main( argc , argv );
}
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