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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
/*
** Zabbix
** Copyright (C) 2001-2020 Zabbix SIA
**
** 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.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
#include "common.h"
#include "daemon.h"
#include "log.h"
#include "zbxjson.h"
#include "zbxself.h"
#include "heart.h"
#include "../servercomms.h"
#include "zbxcrypto.h"
extern unsigned char process_type, program_type;
extern int server_num, process_num;
/******************************************************************************
* *
* Function: send_heartbeat *
* *
******************************************************************************/
static int send_heartbeat(void)
{
zbx_socket_t sock;
struct zbx_json j;
int ret = SUCCEED;
char *error = NULL;
zabbix_log(LOG_LEVEL_DEBUG, "In send_heartbeat()");
zbx_json_init(&j, 128);
zbx_json_addstring(&j, "request", ZBX_PROTO_VALUE_PROXY_HEARTBEAT, ZBX_JSON_TYPE_STRING);
zbx_json_addstring(&j, "host", CONFIG_HOSTNAME, ZBX_JSON_TYPE_STRING);
zbx_json_addstring(&j, ZBX_PROTO_TAG_VERSION, ZABBIX_VERSION, ZBX_JSON_TYPE_STRING);
if (FAIL == connect_to_server(&sock, CONFIG_HEARTBEAT_FREQUENCY, 0)) /* do not retry */
return FAIL;
if (SUCCEED != put_data_to_server(&sock, &j, &error))
{
zabbix_log(LOG_LEVEL_WARNING, "cannot send heartbeat message to server at \"%s\": %s",
sock.peer, error);
ret = FAIL;
}
zbx_free(error);
disconnect_server(&sock);
return ret;
}
/******************************************************************************
* *
* Function: main_heart_loop *
* *
* Purpose: periodically send heartbeat message to the server *
* *
******************************************************************************/
ZBX_THREAD_ENTRY(heart_thread, args)
{
int start, sleeptime = 0, res;
double sec, total_sec = 0.0, old_total_sec = 0.0;
time_t last_stat_time;
#define STAT_INTERVAL 5 /* if a process is busy and does not sleep then update status not faster than */
/* once in STAT_INTERVAL seconds */
process_type = ((zbx_thread_args_t *)args)->process_type;
server_num = ((zbx_thread_args_t *)args)->server_num;
process_num = ((zbx_thread_args_t *)args)->process_num;
zabbix_log(LOG_LEVEL_INFORMATION, "%s #%d started [%s #%d]", get_program_type_string(program_type),
server_num, get_process_type_string(process_type), process_num);
#if defined(HAVE_POLARSSL) || defined(HAVE_GNUTLS) || defined(HAVE_OPENSSL)
zbx_tls_init_child();
#endif
last_stat_time = time(NULL);
zbx_setproctitle("%s [sending heartbeat message]", get_process_type_string(process_type));
while (ZBX_IS_RUNNING())
{
sec = zbx_time();
zbx_update_env(sec);
if (0 != sleeptime)
{
zbx_setproctitle("%s [sending heartbeat message %s in " ZBX_FS_DBL " sec, "
"sending heartbeat message]",
get_process_type_string(process_type),
SUCCEED == res ? "success" : "failed", old_total_sec);
}
start = time(NULL);
res = send_heartbeat();
total_sec += zbx_time() - sec;
sleeptime = CONFIG_HEARTBEAT_FREQUENCY - (time(NULL) - start);
if (0 != sleeptime || STAT_INTERVAL <= time(NULL) - last_stat_time)
{
if (0 == sleeptime)
{
zbx_setproctitle("%s [sending heartbeat message %s in " ZBX_FS_DBL " sec, "
"sending heartbeat message]",
get_process_type_string(process_type),
SUCCEED == res ? "success" : "failed", total_sec);
}
else
{
zbx_setproctitle("%s [sending heartbeat message %s in " ZBX_FS_DBL " sec, "
"idle %d sec]",
get_process_type_string(process_type),
SUCCEED == res ? "success" : "failed", total_sec, sleeptime);
old_total_sec = total_sec;
}
total_sec = 0.0;
last_stat_time = time(NULL);
}
zbx_sleep_loop(sleeptime);
}
zbx_setproctitle("%s #%d [terminated]", get_process_type_string(process_type), process_num);
while (1)
zbx_sleep(SEC_PER_MIN);
#undef STAT_INTERVAL
}
|
