END_TEST
static void
handler_events_propagate(UA_Client *lclient, UA_UInt32 subId, void *subContext,
UA_UInt32 monId, void *monContext,
size_t nEventFields, UA_Variant *eventFields) {
UA_Boolean foundSeverity = UA_FALSE;
UA_Boolean foundMessage = UA_FALSE;
UA_Boolean foundType = UA_FALSE;
UA_Boolean foundSource = UA_FALSE;
ck_assert_uint_eq(*(UA_UInt32 *) monContext, monitoredItemId);
ck_assert_uint_eq(nEventFields, nSelectClauses);
// check all event fields
for (unsigned int i = 0; i < nEventFields; i++) {
// find out which attribute of the event is being looked at
if (UA_Variant_hasScalarType(&eventFields[i], &UA_TYPES[UA_TYPES_UINT16])) {
// Severity
ck_assert_uint_eq(*((UA_UInt16 *) (eventFields[i].data)), 1000);
foundSeverity = UA_TRUE;
} else if (UA_Variant_hasScalarType(&eventFields[i], &UA_TYPES[UA_TYPES_LOCALIZEDTEXT])) {
// Message
UA_LocalizedText comp = UA_LOCALIZEDTEXT("en-US", "Generated Event");
ck_assert(UA_String_equal(&((UA_LocalizedText *) eventFields[i].data)->locale, &comp.locale));
ck_assert(UA_String_equal(&((UA_LocalizedText *) eventFields[i].data)->text, &comp.text));
foundMessage = UA_TRUE;
} else if (UA_Variant_hasScalarType(&eventFields[i], &UA_TYPES[UA_TYPES_NODEID])) {
// either SourceNode or EventType
UA_NodeId serverNameSpaceId = UA_NODEID_NUMERIC(0, UA_NS0ID_SERVER_NAMESPACES);
if (UA_NodeId_equal((UA_NodeId *)eventFields[i].data, &eventType)) {
// EventType
foundType = UA_TRUE;
} else if (UA_NodeId_equal((UA_NodeId *)eventFields[i].data, &serverNameSpaceId)) {
// SourceNode
foundSource = UA_TRUE;
} else {
ck_assert_msg(UA_FALSE, "NodeId doesn't match");
}
} else {
ck_assert_msg(UA_FALSE, "Field doesn't match");
}
}
ck_assert_uint_eq(foundMessage, UA_TRUE);
ck_assert_uint_eq(foundSeverity, UA_TRUE);
ck_assert_uint_eq(foundType, UA_TRUE);
ck_assert_uint_eq(foundSource, UA_TRUE);
notificationReceived = true;
}
int main(void) {
signal(SIGINT, stopHandler); /* catches ctrl-c */
UA_ClientConfig config = UA_ClientConfig_default;
/* default timeout is 5 seconds. Set it to 1 second here for demo */
config.timeout = 1000;
UA_Client *client = UA_Client_new(config);
/* Read the value attribute of the node. UA_Client_readValueAttribute is a
* wrapper for the raw read service available as UA_Client_Service_read. */
UA_Variant value; /* Variants can hold scalar values and arrays of any type */
UA_Variant_init(&value);
/* Endless loop reading the server time */
while (running) {
/* if already connected, this will return GOOD and do nothing */
/* if the connection is closed/errored, the connection will be reset and then reconnected */
/* Alternatively you can also use UA_Client_getState to get the current state */
UA_StatusCode retval = UA_Client_connect(client, "opc.tcp://localhost:4840");
if (retval != UA_STATUSCODE_GOOD) {
UA_LOG_ERROR(logger, UA_LOGCATEGORY_CLIENT, "Not connected. Retrying to connect in 1 second");
/* The connect may timeout after 1 second (see above) or it may fail immediately on network errors */
/* E.g. name resolution errors or unreachable network. Thus there should be a small sleep here */
UA_sleep_ms(1000);
continue;
}
/* NodeId of the variable holding the current time */
const UA_NodeId nodeId =
UA_NODEID_NUMERIC(0, UA_NS0ID_SERVER_SERVERSTATUS_CURRENTTIME);
retval = UA_Client_readValueAttribute(client, nodeId, &value);
if (retval == UA_STATUSCODE_BADCONNECTIONCLOSED) {
UA_LOG_ERROR(logger, UA_LOGCATEGORY_CLIENT, "Connection was closed. Reconnecting ...");
continue;
}
if (retval == UA_STATUSCODE_GOOD &&
UA_Variant_hasScalarType(&value, &UA_TYPES[UA_TYPES_DATETIME])) {
UA_DateTime raw_date = *(UA_DateTime *) value.data;
UA_String string_date = UA_DateTime_toString(raw_date);
UA_LOG_INFO(logger, UA_LOGCATEGORY_CLIENT, "string date is: %.*s", (int) string_date.length, string_date.data);
UA_String_deleteMembers(&string_date);
}
UA_sleep_ms(1000);
};
/* Clean up */
UA_Variant_deleteMembers(&value);
UA_Client_delete(client); /* Disconnects the client internally */
return UA_STATUSCODE_GOOD;
}
