1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
// bridge.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 "../util/message.h"
#include "../client/dbclient.h"
using namespace mongo;
using namespace std;
int port = 0;
string destUri;
class Forwarder {
public:
Forwarder( MessagingPort &mp ) : mp_( mp ) {
}
void operator()() const {
DBClientConnection dest;
string errmsg;
while( !dest.connect( destUri, errmsg ) )
sleepmillis( 500 );
Message m;
while( 1 ) {
m.reset();
if ( !mp_.recv( m ) ) {
cout << "end connection " << mp_.farEnd.toString() << endl;
mp_.shutdown();
break;
}
int oldId = m.data->id;
if ( m.data->operation() == dbQuery || m.data->operation() == dbMsg || m.data->operation() == dbGetMore ) {
Message response;
dest.port().call( m, response );
mp_.reply( m, response, oldId );
} else {
dest.port().say( m, oldId );
}
}
}
private:
MessagingPort &mp_;
};
set<MessagingPort*> ports;
class MyListener : public Listener {
public:
MyListener( int port ) : Listener( "", port ) {}
virtual void accepted(MessagingPort *mp) {
ports.insert( mp );
Forwarder f( *mp );
boost::thread t( f );
}
};
auto_ptr< MyListener > listener;
#if !defined(_WIN32)
void cleanup( int sig ) {
close( listener->socket() );
for ( set<MessagingPort*>::iterator i = ports.begin(); i != ports.end(); i++ )
(*i)->shutdown();
::exit( 0 );
}
void setupSignals() {
signal( SIGINT , cleanup );
signal( SIGTERM , cleanup );
signal( SIGPIPE , cleanup );
signal( SIGABRT , cleanup );
signal( SIGSEGV , cleanup );
signal( SIGBUS , cleanup );
signal( SIGFPE , cleanup );
}
#else
inline void setupSignals() {}
#endif
void helpExit() {
cout << "usage mongobridge --port <port> --dest <destUri>" << endl;
cout << " port: port to listen for mongo messages" << endl;
cout << " destUri: uri of remote mongod instance" << endl;
::exit( -1 );
}
void check( bool b ) {
if ( !b )
helpExit();
}
int main( int argc, char **argv ) {
static StaticObserver staticObserver;
setupSignals();
check( argc == 5 );
for( int i = 1; i < 5; ++i ) {
check( i % 2 != 0 );
if ( strcmp( argv[ i ], "--port" ) == 0 ) {
port = strtol( argv[ ++i ], 0, 10 );
} else if ( strcmp( argv[ i ], "--dest" ) == 0 ) {
destUri = argv[ ++i ];
} else {
check( false );
}
}
check( port != 0 && !destUri.empty() );
listener.reset( new MyListener( port ) );
listener->init();
listener->listen();
return 0;
}
|
