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
|
/**
* Copyright (c) 2016-present, Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// This binary provides an easy way to open a zeromq server and feeds data to
// clients connect to it. It uses the Caffe2 db as the backend, thus allowing
// one to convert any db-compliant storage to a zeromq service.
#include "caffe2/core/db.h"
#include "caffe2/core/init.h"
#include "caffe2/core/logging.h"
#include "caffe2/utils/zmq_helper.h"
C10_DEFINE_string(server, "tcp://*:5555", "The server address.");
C10_DEFINE_string(input_db, "", "The input db.");
C10_DEFINE_string(input_db_type, "", "The input db type.");
int main(int argc, char** argv) {
caffe2::GlobalInit(&argc, &argv);
LOG(INFO) << "Opening DB...";
auto in_db = caffe2::db::CreateDB(
FLAGS_input_db_type, FLAGS_input_db, caffe2::db::READ);
CAFFE_ENFORCE(
in_db,
"Cannot load input db " + FLAGS_input_db + " of expected type " +
FLAGS_input_db_type);
auto cursor = in_db->NewCursor();
LOG(INFO) << "DB opened.";
LOG(INFO) << "Starting ZeroMQ server...";
// Socket to talk to clients
caffe2::ZmqSocket sender(ZMQ_PUSH);
sender.Bind(FLAGS_server);
LOG(INFO) << "Server created at " << FLAGS_server;
while (1) {
VLOG(1) << "Sending " << cursor->key();
sender.SendTillSuccess(cursor->key(), ZMQ_SNDMORE);
sender.SendTillSuccess(cursor->value(), 0);
cursor->Next();
if (!cursor->Valid()) {
cursor->SeekToFirst();
}
}
// We do not do an elegant quit since this binary is going to be terminated by
// control+C.
return 0;
}
|
