static void disable_host(DB_ITEM *item, time_t now, char *error)
{
assert(item);
switch (zbx_process) {
case ZBX_PROCESS_SERVER:
DBupdate_host_availability(item, HOST_AVAILABLE_FALSE, now, error);
update_key_status(item->hostid, HOST_AVAILABLE_FALSE, now); /* 2 */
break;
case ZBX_PROCESS_PROXY:
DBproxy_update_host_availability(item, HOST_AVAILABLE_FALSE, now);
break;
}
}
static void enable_host(DB_ITEM *item, time_t now)
{
assert(item);
switch (zbx_process) {
case ZBX_PROCESS_SERVER:
DBupdate_host_availability(item, HOST_AVAILABLE_TRUE, now, NULL);
update_key_status(item->hostid, HOST_STATUS_MONITORED, now); /* 0 */
break;
case ZBX_PROCESS_PROXY:
DBproxy_update_host_availability(item, HOST_AVAILABLE_TRUE, now);
break;
}
}
static void deactivate_host(DC_ITEM *item, int now, const char *error)
{
char sql[MAX_STRING_LEN], *error_esc, error_msg[MAX_STRING_LEN];
int offset = 0, *errors_from, *disable_until;
unsigned char *available;
const char *fld_errors_from, *fld_available, *fld_disable_until, *fld_error, *type;
switch (item->type)
{
case ITEM_TYPE_ZABBIX:
errors_from = &item->host.errors_from;
available = &item->host.available;
disable_until = &item->host.disable_until;
fld_errors_from = "errors_from";
fld_available = "available";
fld_disable_until = "disable_until";
fld_error = "error";
type = "Zabbix";
break;
case ITEM_TYPE_SNMPv1:
case ITEM_TYPE_SNMPv2c:
case ITEM_TYPE_SNMPv3:
errors_from = &item->host.snmp_errors_from;
available = &item->host.snmp_available;
disable_until = &item->host.snmp_disable_until;
fld_errors_from = "snmp_errors_from";
fld_available = "snmp_available";
fld_disable_until = "snmp_disable_until";
fld_error = "snmp_error";
type = "SNMP";
break;
case ITEM_TYPE_IPMI:
errors_from = &item->host.ipmi_errors_from;
available = &item->host.ipmi_available;
disable_until = &item->host.ipmi_disable_until;
fld_errors_from = "ipmi_errors_from";
fld_available = "ipmi_available";
fld_disable_until = "ipmi_disable_until";
fld_error = "ipmi_error";
type = "IPMI";
break;
default:
return;
}
if (SUCCEED != DCconfig_deactivate_host(item, now))
return;
DBbegin();
*error_msg = '\0';
offset += zbx_snprintf(sql + offset, sizeof(sql) - offset, "update hosts set ");
/* First error */
if (0 == *errors_from)
{
zbx_snprintf(error_msg, sizeof(error_msg), "%s Host [%s]: first network error, wait for %d seconds",
type, item->host.host, CONFIG_UNREACHABLE_DELAY);
*errors_from = now;
*disable_until = now + CONFIG_UNREACHABLE_DELAY;
offset += zbx_snprintf(sql + offset, sizeof(sql) - offset, "%s=%d,",
fld_errors_from, *errors_from);
}
else
{
if (now - *errors_from <= CONFIG_UNREACHABLE_PERIOD)
{
/* Still unavailable, but won't change status to UNAVAILABLE yet */
zbx_snprintf(error_msg, sizeof(error_msg), "%s Host [%s]: another network error, wait for %d seconds",
type, item->host.host, CONFIG_UNREACHABLE_DELAY);
*disable_until = now + CONFIG_UNREACHABLE_DELAY;
}
else
{
*disable_until = now + CONFIG_UNAVAILABLE_DELAY;
if (HOST_AVAILABLE_FALSE != *available)
{
zbx_snprintf(error_msg, sizeof(error_msg), "Disabling %s host [%s]",
type, item->host.host);
*available = HOST_AVAILABLE_FALSE;
offset += zbx_snprintf(sql + offset, sizeof(sql) - offset, "%s=%d,",
fld_available, *available);
if (available == &item->host.available)
update_key_status(item->host.hostid, HOST_AVAILABLE_FALSE, now); /* 2 */
update_triggers_status_to_unknown(item->host.hostid, item->type, now, "Agent is unavailable.");
}
error_esc = DBdyn_escape_string_len(error, HOST_ERROR_LEN);
offset += zbx_snprintf(sql + offset, sizeof(sql) - offset, "%s='%s',",
fld_error, error_esc);
zbx_free(error_esc);
}
}
offset += zbx_snprintf(sql + offset, sizeof(sql) - offset, "%s=%d where hostid=" ZBX_FS_UI64,
fld_disable_until, *disable_until, item->host.hostid);
DBexecute("%s", sql);
DBcommit();
if ('\0' != *error_msg)
{
zabbix_log(LOG_LEVEL_WARNING, "%s", error_msg);
zabbix_syslog("%s", error_msg);
}
}
static void activate_host(DC_ITEM *item, int now)
{
char sql[MAX_STRING_LEN], error_msg[MAX_STRING_LEN];
int offset = 0, *errors_from, *disable_until;
unsigned char *available;
const char *fld_errors_from, *fld_available, *fld_disable_until, *fld_error, *type;
switch (item->type)
{
case ITEM_TYPE_ZABBIX:
errors_from = &item->host.errors_from;
available = &item->host.available;
disable_until = &item->host.disable_until;
fld_errors_from = "errors_from";
fld_available = "available";
fld_disable_until = "disable_until";
fld_error = "error";
type = "Zabbix";
break;
case ITEM_TYPE_SNMPv1:
case ITEM_TYPE_SNMPv2c:
case ITEM_TYPE_SNMPv3:
errors_from = &item->host.snmp_errors_from;
available = &item->host.snmp_available;
disable_until = &item->host.snmp_disable_until;
fld_errors_from = "snmp_errors_from";
fld_available = "snmp_available";
fld_disable_until = "snmp_disable_until";
fld_error = "snmp_error";
type = "SNMP";
break;
case ITEM_TYPE_IPMI:
errors_from = &item->host.ipmi_errors_from;
available = &item->host.ipmi_available;
disable_until = &item->host.ipmi_disable_until;
fld_errors_from = "ipmi_errors_from";
fld_available = "ipmi_available";
fld_disable_until = "ipmi_disable_until";
fld_error = "ipmi_error";
type = "IPMI";
break;
default:
return;
}
if (0 == *errors_from && HOST_AVAILABLE_TRUE == *available)
return;
if (SUCCEED != DCconfig_activate_host(item))
return;
offset += zbx_snprintf(sql + offset, sizeof(sql) - offset, "update hosts set ");
if (HOST_AVAILABLE_TRUE != *available)
{
zbx_snprintf(error_msg, sizeof(error_msg), "Enabling %s host [%s]",
type, item->host.host);
zabbix_log(LOG_LEVEL_WARNING, "%s", error_msg);
zabbix_syslog("%s", error_msg);
*available = HOST_AVAILABLE_TRUE;
offset += zbx_snprintf(sql + offset, sizeof(sql) - offset, "%s=%d,",
fld_available, *available);
if (available == &item->host.available)
update_key_status(item->host.hostid, HOST_STATUS_MONITORED, now); /* 0 */
}
*errors_from = 0;
*disable_until = 0;
offset += zbx_snprintf(sql + offset, sizeof(sql) - offset,
"%s=%d,%s=%d,%s='' where hostid=" ZBX_FS_UI64,
fld_errors_from, *errors_from,
fld_disable_until, *disable_until,
fld_error,
item->host.hostid);
DBbegin();
DBexecute("%s", sql);
DBcommit();
}
