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/* Simple Osmocom System Monitor (osysmon) */
/* (C) 2018 by Harald Welte <laforge@gnumonks.org>
* All Rights Reserved.
*
* SPDX-License-Identifier: GPL-2.0+
*
* 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 <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include "config.h"
#include "osysmon.h"
#include "value_node.h"
#include <osmocom/core/msgb.h>
#include <osmocom/core/logging.h>
#include <osmocom/core/application.h>
static struct log_info log_info = {};
static int osysmon_go_parent(struct vty *vty)
{
switch (vty->node) {
case CTRL_CLIENT_NODE:
case CTRL_CLIENT_GETVAR_NODE:
return osysmon_ctrl_go_parent(vty);
}
return vty->node;
}
static int osysmon_is_config_node(struct vty *vty, int node)
{
switch (node) {
/* no non-config-nodes */
default:
return 1;
}
}
static struct vty_app_info vty_info = {
.name = "osysmon",
.copyright =
"Copyright (C) 2008-2018 Harald Welte\r\n"
"License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl-2.0.html>\r\n"
"This is free software: you are free to change and redistribute it.\r\n"
"There is NO WARRANTY, to the extent permitted by law.\r\n",
.version = PACKAGE_VERSION,
.go_parent_cb = osysmon_go_parent,
.is_config_node = osysmon_is_config_node,
};
static const char *config_file = "osysmon.cfg";
struct osysmon_state *g_oss;
static void print_node(struct value_node *node, unsigned int indent)
{
unsigned int i;
if (node->value) {
for (i = 0; i < indent; i++)
fputc(' ', stdout);
printf("%s: %s\n", node->name, node->value);
} else {
struct value_node *vn;
for (i = 0; i < indent; i++)
fputc(' ', stdout);
printf("%s\n", node->name);
llist_for_each_entry(vn, &node->children, list)
print_node(vn, indent+2);
}
}
static void display_update(struct value_node *root)
{
print_node(root, 0);
}
static void signal_handler(int signal)
{
fprintf(stderr, "Signal %u received", signal);
switch(signal) {
case SIGUSR1:
talloc_report(g_oss, stderr);
break;
default:
break;
}
}
int main(int argc, char **argv)
{
int rc;
osmo_init_logging2(NULL, &log_info);
g_oss = talloc_zero(NULL, struct osysmon_state);
INIT_LLIST_HEAD(&g_oss->ctrl_clients);
INIT_LLIST_HEAD(&g_oss->netdevs);
INIT_LLIST_HEAD(&g_oss->files);
vty_init(&vty_info);
osysmon_sysinfo_init();
osysmon_ctrl_init();
osysmon_rtnl_init();
osysmon_file_init();
rc = vty_read_config_file(config_file, NULL);
if (rc < 0) {
fprintf(stderr, "Failed to parse the config file\n");
exit(2);
}
signal(SIGUSR1, &signal_handler);
signal(SIGUSR2, &signal_handler);
osmo_init_ignore_signals();
while (1) {
struct value_node *root = value_node_add(g_oss, NULL, "root", NULL);
osysmon_sysinfo_poll(root);
osysmon_ctrl_poll(root);
osysmon_rtnl_poll(root);
osysmon_file_poll(root);
display_update(root);
value_node_del(root);
sleep(1);
}
exit(0);
}
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