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
133
134
|
/*
* Copyright (C) 2011,2013 Tommi Maekitalo
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* As a special exception, you may use this file as part of a free
* software library without restriction. Specifically, if other files
* instantiate templates or use macros or inline functions from this
* file, or you compile this file and link it with other files to
* produce an executable, this file does not by itself cause the
* resulting executable to be covered by the GNU General Public
* License. This exception does not however invalidate any other
* reasons why the executable file might be covered by the GNU Library
* General Public License.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
This demo program shows how to run multiple remote rpc calls asncronously so
that they run in parallel.
*/
#include <iostream>
#include <cxxtools/arg.h>
#include <cxxtools/log.h>
#include <cxxtools/xmlrpc/httpclient.h>
#include <cxxtools/bin/rpcclient.h>
#include <cxxtools/json/rpcclient.h>
#include <cxxtools/json/httpclient.h>
#include <cxxtools/remoteprocedure.h>
#include <cxxtools/selector.h>
int main(int argc, char* argv[])
{
try
{
// initialize logging - this reads the file log.xml from the current directory
log_init();
// read the command line options
cxxtools::Arg<std::string> ip(argc, argv, 'i'); // option -i <ip-addres> defines the address where to find the server
cxxtools::Arg<bool> binary(argc, argv, 'b');
cxxtools::Arg<bool> json(argc, argv, 'j');
cxxtools::Arg<bool> jsonhttp(argc, argv, 'J');
cxxtools::Arg<cxxtools::Milliseconds> timeout(argc, argv, 't', cxxtools::RemoteClient::WaitInfinite);
cxxtools::Arg<unsigned short> port(argc, argv, 'p', binary ? 7003 : json ? 7004 : 7002);
// we need a selector, which controls the network activity
cxxtools::Selector selector;
// Normally we would define just one rpc client for the protocol we use but
// here we want to demonstrate, that it is just up to the client, which protocol
// is used for the remote call.
// One client can run just one request at a time. To run parallel requests
// we need 2 clients. So we define 2 clients for each protocol.
// define a xlmrpc client
cxxtools::xmlrpc::HttpClient xmlrpcClient1(selector, ip, port, "/xmlrpc");
cxxtools::xmlrpc::HttpClient xmlrpcClient2(selector, ip, port, "/xmlrpc");
// and a binary rpc client
cxxtools::bin::RpcClient binaryClient1(selector, ip, port);
cxxtools::bin::RpcClient binaryClient2(selector, ip, port);
// and a tcp json rpc client
cxxtools::json::RpcClient jsonClient1(selector, ip, port);
cxxtools::json::RpcClient jsonClient2(selector, ip, port);
// and a http json rpc client
cxxtools::json::HttpClient httpJsonClient1(selector, ip, port, "/jsonrpc");
cxxtools::json::HttpClient httpJsonClient2(selector, ip, port, "/jsonrpc");
// now se select the client depending on the command line flags
cxxtools::RemoteClient& client1(
binary ? static_cast<cxxtools::RemoteClient&>(binaryClient1) :
json ? static_cast<cxxtools::RemoteClient&>(jsonClient1) :
jsonhttp ? static_cast<cxxtools::RemoteClient&>(httpJsonClient1) :
static_cast<cxxtools::RemoteClient&>(xmlrpcClient1));
cxxtools::RemoteClient& client2(
binary ? static_cast<cxxtools::RemoteClient&>(binaryClient2) :
json ? static_cast<cxxtools::RemoteClient&>(jsonClient2) :
jsonhttp ? static_cast<cxxtools::RemoteClient&>(httpJsonClient2) :
static_cast<cxxtools::RemoteClient&>(xmlrpcClient2));
// define remote procedure with dobule return value and two double parameters
cxxtools::RemoteProcedure<double, double, double> add1(client1, "add");
cxxtools::RemoteProcedure<double, double, double> add2(client2, "add");
// initiate the execution of our method
add1.begin(5, 6);
add2.begin(1, 2);
// Calling RemoteProcedure::end will run the underlying event loop until
// the remote procedure is finished and return the result.
// In case of a error, an exception is thrown.
// Note that waiting for the end of one remote procedure will also start
// and maybe finish the second remote procedure.
double result1 = add1.end(timeout);
std::cout << "result1=" << result1 << std::endl;
// Here we run the loop again until the second procedure is finished. It
// may well be, that the procedure is already finished and we get the
// result immediately.
double result2 = add2.end(timeout);
std::cout << "result2=" << result2 << std::endl;
}
catch (const std::exception& e)
{
std::cerr << "error: " << e.what() << std::endl;
}
}
|
