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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 Tool {
public:
bool _drop;
bool _objcheck;
Restore() : Tool( "restore" , true , "" , "" ) , _drop(false),_objcheck(false){
add_options()
("drop" , "drop each collection before import" )
("objcheck" , "validate object before inserting" )
;
add_hidden_options()
("dir", po::value<string>()->default_value("dump"), "directory to restore from")
;
addPositionArg("dir", 1);
}
virtual void printExtraHelp(ostream& out) {
out << "usage: " << _name << " [options] [directory or filename to restore from]" << endl;
}
int run(){
auth();
path root = getParam("dir");
_drop = hasParam( "drop" );
_objcheck = hasParam( "objcheck" );
/* 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);
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;
}
}
drillDown(p, 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;
}
out() << root.string() << endl;
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 (use_coll) {
ns += "." + _coll;
} else {
string l = root.leaf();
l = l.substr( 0 , l.find_last_of( "." ) );
ns += "." + l;
}
long long fileLength = file_size( root );
if ( fileLength == 0 ) {
out() << "file " + root.native_file_string() + " empty, skipping" << endl;
return;
}
out() << "\t going into namespace [" << ns << "]" << endl;
if ( _drop ){
out() << "\t dropping" << endl;
conn().dropCollection( ns );
}
string fileString = root.string();
ifstream file( fileString.c_str() , ios_base::in | ios_base::binary);
if ( ! file.is_open() ){
log() << "error opening file: " << fileString << endl;
return;
}
log(1) << "\t file size: " << fileLength << endl;
long long read = 0;
long long num = 0;
const int BUF_SIZE = 1024 * 1024 * 5;
boost::scoped_array<char> buf_holder(new char[BUF_SIZE]);
char * buf = buf_holder.get();
ProgressMeter m( fileLength );
while ( read < fileLength ) {
file.read( buf , 4 );
int size = ((int*)buf)[0];
if ( size >= BUF_SIZE ){
cerr << "got an object of size: " << size << " terminating..." << endl;
}
uassert( 10264 , "invalid object size" , size < BUF_SIZE );
file.read( buf + 4 , size - 4 );
BSONObj o( buf );
if ( _objcheck && ! o.valid() ){
cerr << "INVALID OBJECT - going try and pring out " << endl;
cerr << "size: " << size << endl;
BSONObjIterator i(o);
while ( i.more() ){
BSONElement e = i.next();
try {
e.validate();
}
catch ( ... ){
cerr << "\t\t NEXT ONE IS INVALID" << endl;
}
cerr << "\t name : " << e.fieldName() << " " << e.type() << endl;
cerr << "\t " << e << endl;
}
}
conn().insert( ns.c_str() , o );
read += o.objsize();
num++;
m.hit( o.objsize() );
}
uassert( 10265 , "counts don't match" , m.done() == fileLength );
out() << "\t " << m.hits() << " objects" << endl;
}
};
int main( int argc , char ** argv ) {
Restore restore;
return restore.main( argc , argv );
}
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