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
|
/*
* This Source Code Form is subject to the terms of the Mozilla Public License,
* v. 2.0. If a copy of the MPL was not distributed with this file, You can
* obtain one at https://mozilla.org/MPL/2.0/.
*/
#include <stdbool.h>
#include <zephyr/init.h>
#include <zephyr/kernel.h>
#include <zephyr/logging/log.h>
#include <zephyr/logging/log_backend.h>
#include <zephyr/logging/log_backend_net.h>
#include <zephyr/logging/log_ctrl.h>
#include <zephyr/logging/log_core.h>
#include <zephyr/net/conn_mgr_connectivity.h>
#ifdef CONFIG_IOT_CONTACT_NETWORK_HACK
#include <zephyr/sys/reboot.h>
#endif // CONFIG_IOT_CONTACT_NETWORK_HACK
LOG_MODULE_REGISTER(syslog);
#define NETWORK_BUG_DELAY K_MSEC(4000)
#define L4_EVENT_MASK (NET_EVENT_L4_CONNECTED | NET_EVENT_L4_DISCONNECTED)
struct net_mgmt_event_callback l4_cb;
static K_SEM_DEFINE(network_connected, 0, 1);
void l4_event_handler(
struct net_mgmt_event_callback *cb,
uint32_t event,
struct net_if *iface)
{
LOG_DBG("Executing L4 event handler");
switch (event) {
case NET_EVENT_L4_CONNECTED:
k_sem_give(&network_connected);
LOG_INF("Network connected");
break;
case NET_EVENT_L4_DISCONNECTED:
LOG_INF("Network disconnected");
break;
default:
break;
}
}
int init_network_monitoring(void)
{
net_mgmt_init_event_callback(&l4_cb, l4_event_handler, L4_EVENT_MASK);
net_mgmt_add_event_callback(&l4_cb);
return 0;
}
SYS_INIT(init_network_monitoring, APPLICATION, 0);
int init_syslog(void)
{
LOG_DBG("Initializing syslog logging backend");
LOG_INF("Waiting for network ...");
#ifdef CONFIG_IOT_CONTACT_NETWORK_HACK
int ret = k_sem_take(&network_connected, NETWORK_BUG_DELAY);
if (ret == -EAGAIN) {
LOG_ERR("Could not connect to network - rebooting system");
log_flush();
sys_reboot(SYS_REBOOT_COLD);
}
#else
k_sem_take(&network_connected, K_FOREVER);
#endif // CONFIG_IOT_CONTACT_NETWORK_HACK
LOG_INF("Enabling syslog backend");
const struct log_backend *backend = log_backend_net_get();
if (log_backend_is_active(backend) == false) {
/* flush log messages to ensure first syslog message is reproducible */
while (log_process());
log_backend_init(backend);
log_backend_enable(backend, backend->cb->ctx, CONFIG_LOG_MAX_LEVEL);
LOG_INF("Syslog backend enabled");
} else {
LOG_INF("Syslog backend was already enabled");
}
return 0;
}
SYS_INIT(init_syslog, APPLICATION, 50);
|
