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cibmon.c
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/*
* Copyright (C) 2004 Andrew Beekhof <andrew@beekhof.net>
*
* 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 software 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <crm_internal.h>
#include <sys/param.h>
#include <crm/crm.h>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <crm/msg_xml.h>
#include <crm/common/xml.h>
#include <crm/common/mainloop.h>
#include <crm/cib/internal.h>
#include <crm/common/ipc.h>
#include <crm/pengine/status.h>
#include <../lib/pengine/unpack.h>
#include <crm/cib.h>
#ifdef HAVE_GETOPT_H
# include <getopt.h>
#endif
int max_failures = 30;
int exit_code = pcmk_ok;
gboolean log_diffs = FALSE;
gboolean log_updates = FALSE;
GMainLoop *mainloop = NULL;
void usage(const char *cmd, int exit_status);
void cib_connection_destroy(gpointer user_data);
void cibmon_shutdown(int nsig);
void cibmon_diff(const char *event, xmlNode * msg);
cib_t *cib = NULL;
xmlNode *cib_copy = NULL;
#define OPTARGS "V?m:du"
int
main(int argc, char **argv)
{
int argerr = 0;
int flag;
int attempts = 0;
#ifdef HAVE_GETOPT_H
int option_index = 0;
static struct option long_options[] = {
/* Top-level Options */
{"verbose", 0, 0, 'V'},
{"help", 0, 0, '?'},
{"log-diffs", 0, 0, 'd'},
{"log-updates", 0, 0, 'u'},
{"max-conn-fail", 1, 0, 'm'},
{0, 0, 0, 0}
};
#endif
crm_log_cli_init("cibmon");
crm_signal(SIGTERM, cibmon_shutdown);
while (1) {
#ifdef HAVE_GETOPT_H
flag = getopt_long(argc, argv, OPTARGS, long_options, &option_index);
#else
flag = getopt(argc, argv, OPTARGS);
#endif
if (flag == -1)
break;
switch (flag) {
case 'V':
crm_bump_log_level(argc, argv);
break;
case '?':
usage(crm_system_name, EX_OK);
break;
case 'd':
log_diffs = TRUE;
break;
case 'u':
log_updates = TRUE;
break;
case 'm':
max_failures = crm_parse_int(optarg, "30");
break;
default:
printf("Argument code 0%o (%c)" " is not (?yet?) supported\n", flag, flag);
++argerr;
break;
}
}
if (optind < argc) {
printf("non-option ARGV-elements: ");
while (optind < argc)
printf("%s ", argv[optind++]);
printf("\n");
}
if (optind > argc) {
++argerr;
}
if (argerr) {
usage(crm_system_name, EX_USAGE);
}
cib = cib_new();
do {
sleep(1);
exit_code = cib->cmds->signon(cib, crm_system_name, cib_query);
} while (exit_code == -ENOTCONN && attempts++ < max_failures);
if (exit_code != pcmk_ok) {
crm_err("Signon to CIB failed: %s", pcmk_strerror(exit_code));
}
if (exit_code == pcmk_ok) {
crm_debug("Setting dnotify");
exit_code = cib->cmds->set_connection_dnotify(cib, cib_connection_destroy);
}
crm_debug("Setting diff callback");
exit_code = cib->cmds->add_notify_callback(cib, T_CIB_DIFF_NOTIFY, cibmon_diff);
if (exit_code != pcmk_ok) {
crm_err("Failed to set %s callback: %s", T_CIB_DIFF_NOTIFY, pcmk_strerror(exit_code));
}
if (exit_code != pcmk_ok) {
crm_err("Setup failed, could not monitor CIB actions");
return -exit_code;
}
mainloop = g_main_new(FALSE);
crm_info("Starting mainloop");
g_main_run(mainloop);
crm_trace("%s exiting normally", crm_system_name);
fflush(stderr);
return -exit_code;
}
void
usage(const char *cmd, int exit_status)
{
FILE *stream;
stream = exit_status != 0 ? stderr : stdout;
fflush(stream);
crm_exit(exit_status);
}
void
cib_connection_destroy(gpointer user_data)
{
cib_t *conn = user_data;
crm_err("Connection to the CIB terminated... exiting");
conn->cmds->signoff(conn); /* Ensure IPC is cleaned up */
g_main_quit(mainloop);
return;
}
void
cibmon_diff(const char *event, xmlNode * msg)
{
int rc = -1;
const char *op = NULL;
unsigned int log_level = LOG_INFO;
xmlNode *diff = NULL;
xmlNode *cib_last = NULL;
xmlNode *update = get_message_xml(msg, F_CIB_UPDATE);
if (msg == NULL) {
crm_err("NULL update");
return;
}
crm_element_value_int(msg, F_CIB_RC, &rc);
op = crm_element_value(msg, F_CIB_OPERATION);
diff = get_message_xml(msg, F_CIB_UPDATE_RESULT);
if (rc < pcmk_ok) {
log_level = LOG_WARNING;
do_crm_log(log_level, "[%s] %s ABORTED: %s", event, op, pcmk_strerror(rc));
return;
}
if (log_diffs) {
xml_log_patchset(log_level, op, diff);
}
if (log_updates && update != NULL) {
crm_log_xml_trace(update, "raw_update");
}
if (cib_copy != NULL) {
cib_last = cib_copy;
cib_copy = NULL;
rc = cib_process_diff(op, cib_force_diff, NULL, NULL, diff, cib_last, &cib_copy, NULL);
if (rc != pcmk_ok) {
crm_debug("Update didn't apply, requesting full copy: %s", pcmk_strerror(rc));
free_xml(cib_copy);
cib_copy = NULL;
}
}
if (cib_copy == NULL) {
rc = cib->cmds->query(cib, NULL, &cib_copy, cib_scope_local | cib_sync_call);
}
if(rc == -EACCES) {
crm_exit(rc);
}
free_xml(cib_last);
}
void
cibmon_shutdown(int nsig)
{
crm_exit(pcmk_ok);
}

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