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
|
/*
* Copyright (c) 2014 Red Hat.
* Copyright (c) 1997-2002 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* 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 General Public License
* for more details.
*/
/*
* Generic driver for a daemon-based PMDA
*/
#include <pcp/pmapi.h>
#include <pcp/impl.h>
#include <pcp/pmda.h>
#include "domain.h"
#include "percontext.h"
extern void sample_init(pmdaInterface *);
extern int sample_done;
extern int not_ready;
extern int _isDSO;
static pmdaInterface dispatch;
static pmLongOptions longopts[] = {
PMDA_OPTIONS_HEADER("Options"),
PMOPT_DEBUG,
PMDAOPT_DOMAIN,
PMDAOPT_LOGFILE,
PMDAOPT_USERNAME,
PMOPT_HELP,
PMDA_OPTIONS_TEXT("\nExactly one of the following options may appear:"),
PMDAOPT_INET,
PMDAOPT_PIPE,
PMDAOPT_UNIX,
PMDAOPT_IPV6,
PMDA_OPTIONS_END
};
static pmdaOptions opts = {
.short_options = "D:d:i:l:pu:U:6:?",
.long_options = longopts,
};
/*
* simulate PMDA busy (not responding to PDUs)
*/
int
limbo(void)
{
__pmSendError(dispatch.version.two.ext->e_outfd, FROM_ANON, PM_ERR_PMDANOTREADY);
while (not_ready > 0)
not_ready = sleep(not_ready);
return PM_ERR_PMDAREADY;
}
/*
* callback from pmdaMain
*/
static int
check(void)
{
if (access("/tmp/sample.unavail", F_OK) == 0)
return PM_ERR_AGAIN;
return 0;
}
/*
* callback from pmdaMain
*/
static void
done(void)
{
if (sample_done)
exit(0);
}
int
main(int argc, char **argv)
{
int sep = __pmPathSeparator();
char helppath[MAXPATHLEN];
char *username;
_isDSO = 0;
__pmSetProgname(argv[0]);
__pmGetUsername(&username);
snprintf(helppath, sizeof(helppath), "%s%c" "sample" "%c" "help",
pmGetConfig("PCP_PMDAS_DIR"), sep, sep);
pmdaDaemon(&dispatch, PMDA_INTERFACE_LATEST, pmProgname, SAMPLE,
"sample.log", helppath);
pmdaGetOptions(argc, argv, &opts, &dispatch);
if (opts.errors) {
pmdaUsageMessage(&opts);
exit(1);
}
pmdaOpenLog(&dispatch);
if (opts.username)
username = opts.username;
__pmSetProcessIdentity(username);
sample_init(&dispatch);
pmdaSetCheckCallBack(&dispatch, check);
pmdaSetDoneCallBack(&dispatch, done);
pmdaConnect(&dispatch);
#ifdef HAVE_SIGHUP
/*
* Non-DSO agents should ignore gratuitous SIGHUPs, e.g. from a
* terminal when launched by the PCP Tutorial!
*/
signal(SIGHUP, SIG_IGN);
#endif
pmdaMain(&dispatch);
exit(0);
}
|
