/*!
* <p>Enumerates keys in a ODB directory.
*
* <p><b>Return:</b>
* - DB_SUCCESS on successful completion.
* - DB_INVALID_HANDLE if ODB or key is invalid.
* - DB_NO_MORE_SUBKEYS no more sub-keys available
*
* \param index of a possible subkey
* \param subkey pointer to the subkey
*/
INT PKey::EnumSubKey(INT index, HNDLE *subkey)
{
return db_enum_key(fHDB, fHKey, index, subkey);
}
int cam_init_rpc(char *host_name, char *exp_name, char *fe_name,
char *client_name, char *rpc_server)
{
INT status, i, size;
char str[256];
HNDLE hDB, hKey, hRootKey, hSubkey;
if (rpc_server[0]) {
/* connect directly to RPC server, not to MIDAS experiment */
midas_connect = FALSE;
#ifdef OS_WINNT
{
WSADATA WSAData;
/* Start windows sockets */
if (WSAStartup(MAKEWORD(1, 1), &WSAData) != 0)
return RPC_NET_ERROR;
}
#endif
rpc_set_name(client_name);
rpc_register_functions(rpc_get_internal_list(0), NULL);
rpc_register_functions(rpc_get_internal_list(1), NULL);
status = rpc_client_connect(rpc_server, 1750, client_name, &hConn);
if (status != RPC_SUCCESS) {
printf("Cannot connect to RPC server running on %s at port 1750.\n", rpc_server);
return status;
}
} else {
/* connect to MIDAS experiment */
midas_connect = TRUE;
/* turn off message display, turn on message logging */
cm_set_msg_print(MT_ALL, 0, NULL);
/* connect to experiment */
status = cm_connect_experiment(host_name, exp_name, client_name, 0);
if (status != CM_SUCCESS)
return CM_UNDEF_EXP;
/* connect to the database */
cm_get_experiment_database(&hDB, &hKey);
/* find CNAF server if not specified */
strcpy(str, fe_name);
if (fe_name[0] == '\0') {
/* find client which exports CNAF function */
status = db_find_key(hDB, 0, "System/Clients", &hRootKey);
if (status == DB_SUCCESS) {
for (i = 0, status = 0;; i++) {
status = db_enum_key(hDB, hRootKey, i, &hSubkey);
if (status == DB_NO_MORE_SUBKEYS) {
printf("No client currently exports the CNAF functionality.\n");
cm_disconnect_experiment();
return CM_UNDEF_EXP;
}
sprintf(str, "RPC/%d", RPC_CNAF16);
status = db_find_key(hDB, hSubkey, str, &hKey);
if (status == DB_SUCCESS) {
size = sizeof(str);
db_get_value(hDB, hSubkey, "Name", str, &size, TID_STRING, TRUE);
break;
}
}
}
}
/* register CNAF_RPC call */
if (cm_connect_client(str, &hConn) == CM_SUCCESS) {
DWORD data, size, q, x;
/* test if CNAF function implemented */
size = sizeof(WORD);
status =
rpc_client_call(hConn, RPC_CNAF16, CNAF_TEST, 0, 0, 0, 0, 0, &data, &size,
&q, &x);
if (status != RPC_SUCCESS) {
printf("CNAF functionality not implemented by frontend %s\n", fe_name);
cm_disconnect_client(hConn, FALSE);
return CM_NO_CLIENT;
}
} else {
printf("Cannot connect to frontend %s\n", fe_name);
return CM_NO_CLIENT;
}
}
return SUCCESS;
}
/**
Scan ODB for alarms.
@return AL_SUCCESS
*/
INT al_check()
{
if (rpc_is_remote())
return rpc_call(RPC_AL_CHECK);
#ifdef LOCAL_ROUTINES
{
INT i, status, size, semaphore;
HNDLE hDB, hkeyroot, hkey;
KEY key;
ALARM a;
char str[256], value[256];
time_t now;
PROGRAM_INFO program_info;
BOOL flag;
ALARM_CLASS_STR(alarm_class_str);
ALARM_ODB_STR(alarm_odb_str);
ALARM_PERIODIC_STR(alarm_periodic_str);
cm_get_experiment_database(&hDB, NULL);
if (hDB == 0)
return AL_SUCCESS; /* called from server not yet connected */
/* check online mode */
flag = TRUE;
size = sizeof(flag);
db_get_value(hDB, 0, "/Runinfo/Online Mode", &flag, &size, TID_INT, TRUE);
if (!flag)
return AL_SUCCESS;
/* check global alarm flag */
flag = TRUE;
size = sizeof(flag);
db_get_value(hDB, 0, "/Alarms/Alarm system active", &flag, &size, TID_BOOL, TRUE);
if (!flag)
return AL_SUCCESS;
/* request semaphore */
cm_get_experiment_semaphore(&semaphore, NULL, NULL, NULL);
status = ss_semaphore_wait_for(semaphore, 100);
if (status == SS_TIMEOUT)
return AL_SUCCESS; /* someone else is doing alarm business */
if (status != SS_SUCCESS) {
printf("al_check: Something is wrong with our semaphore, ss_semaphore_wait_for() returned %d, aborting.\n", status);
//abort(); // DOES NOT RETURN
printf("al_check: Cannot abort - this will lock you out of odb. From this point, MIDAS will not work correctly. Please read the discussion at https://midas.triumf.ca/elog/Midas/945\n");
// NOT REACHED
return AL_SUCCESS;
}
/* check ODB alarms */
db_find_key(hDB, 0, "/Alarms/Alarms", &hkeyroot);
if (!hkeyroot) {
/* create default ODB alarm */
status = db_create_record(hDB, 0, "/Alarms/Alarms/Demo ODB", strcomb(alarm_odb_str));
db_find_key(hDB, 0, "/Alarms/Alarms", &hkeyroot);
if (!hkeyroot) {
ss_semaphore_release(semaphore);
return AL_SUCCESS;
}
status = db_create_record(hDB, 0, "/Alarms/Alarms/Demo periodic", strcomb(alarm_periodic_str));
db_find_key(hDB, 0, "/Alarms/Alarms", &hkeyroot);
if (!hkeyroot) {
ss_semaphore_release(semaphore);
return AL_SUCCESS;
}
/* create default alarm classes */
status = db_create_record(hDB, 0, "/Alarms/Classes/Alarm", strcomb(alarm_class_str));
status = db_create_record(hDB, 0, "/Alarms/Classes/Warning", strcomb(alarm_class_str));
if (status != DB_SUCCESS) {
ss_semaphore_release(semaphore);
return AL_SUCCESS;
}
}
for (i = 0;; i++) {
status = db_enum_key(hDB, hkeyroot, i, &hkey);
if (status == DB_NO_MORE_SUBKEYS)
break;
db_get_key(hDB, hkey, &key);
size = sizeof(a);
status = db_get_record(hDB, hkey, &a, &size, 0);
if (status != DB_SUCCESS || a.type < 1 || a.type > AT_LAST) {
/* make sure alarm record has right structure */
db_check_record(hDB, hkey, "", strcomb(alarm_odb_str), TRUE);
size = sizeof(a);
status = db_get_record(hDB, hkey, &a, &size, 0);
if (status != DB_SUCCESS || a.type < 1 || a.type > AT_LAST) {
cm_msg(MERROR, "al_check", "Cannot get alarm record");
continue;
}
}
/* check periodic alarm only when active */
if (a.active &&
a.type == AT_PERIODIC &&
a.check_interval > 0 && (INT) ss_time() - (INT) a.checked_last > a.check_interval) {
/* if checked_last has not been set, set it to current time */
if (a.checked_last == 0) {
a.checked_last = ss_time();
db_set_record(hDB, hkey, &a, size, 0);
} else
al_trigger_alarm(key.name, a.alarm_message, a.alarm_class, "", AT_PERIODIC);
}
/* check alarm only when active and not internal */
if (a.active &&
a.type == AT_EVALUATED &&
a.check_interval > 0 && (INT) ss_time() - (INT) a.checked_last > a.check_interval) {
/* if condition is true, trigger alarm */
if (al_evaluate_condition(a.condition, value)) {
sprintf(str, a.alarm_message, value);
al_trigger_alarm(key.name, str, a.alarm_class, "", AT_EVALUATED);
} else {
a.checked_last = ss_time();
status = db_set_value(hDB, hkey, "Checked last", &a.checked_last, sizeof(DWORD), 1, TID_DWORD);
if (status != DB_SUCCESS) {
cm_msg(MERROR, "al_check", "Cannot change alarm record");
continue;
}
}
}
}
/* check /programs alarms */
db_find_key(hDB, 0, "/Programs", &hkeyroot);
if (hkeyroot) {
for (i = 0;; i++) {
status = db_enum_key(hDB, hkeyroot, i, &hkey);
if (status == DB_NO_MORE_SUBKEYS)
break;
db_get_key(hDB, hkey, &key);
/* don't check "execute on xxx" */
if (key.type != TID_KEY)
continue;
size = sizeof(program_info);
status = db_get_record(hDB, hkey, &program_info, &size, 0);
if (status != DB_SUCCESS) {
cm_msg(MERROR, "al_check", "Cannot get program info record");
continue;
}
now = ss_time();
rpc_get_name(str);
str[strlen(key.name)] = 0;
if (!equal_ustring(str, key.name) && cm_exist(key.name, FALSE) == CM_NO_CLIENT) {
if (program_info.first_failed == 0) {
program_info.first_failed = (DWORD) now;
db_set_record(hDB, hkey, &program_info, sizeof(program_info), 0);
}
/* fire alarm when not running for more than what specified in check interval */
if (now - program_info.first_failed >= program_info.check_interval / 1000) {
/* if not running and alarm calss defined, trigger alarm */
if (program_info.alarm_class[0]) {
sprintf(str, "Program %s is not running", key.name);
al_trigger_alarm(key.name, str, program_info.alarm_class,
"Program not running", AT_PROGRAM);
}
/* auto restart program */
if (program_info.auto_restart && program_info.start_command[0]) {
ss_system(program_info.start_command);
program_info.first_failed = 0;
cm_msg(MTALK, "al_check", "Program %s restarted", key.name);
}
}
} else {
if (program_info.first_failed != 0) {
program_info.first_failed = 0;
db_set_record(hDB, hkey, &program_info, sizeof(program_info), 0);
}
}
}
}
ss_semaphore_release(semaphore);
}
#endif /* LOCAL_COUTINES */
return SUCCESS;
}
