Exemple #1
0
/**
 * Setting up an event
 * ^^^^^^^^^^^^^^^^^^^
 * In order to set up the event, we can first use ``UA_Server_createEvent`` to give us a node representation of the event.
 * All we need for this is our `EventType`. Once we have our event node, which is saved internally as an `ObjectNode`,
 * we can define the attributes the event has the same way we would define the attributes of an object node. It is not
 * necessary to define the attributes `EventId`, `ReceiveTime`, `SourceNode` or `EventType` since these are set
 * automatically by the server. In this example, we will be setting the fields 'Message' and 'Severity' in addition
 * to `Time` which is needed to make the example UaExpert compliant.
 */
static UA_StatusCode
setUpEvent(UA_Server *server, UA_NodeId *outId) {
    UA_StatusCode retval = UA_Server_createEvent(server, eventType, outId);
    if (retval != UA_STATUSCODE_GOOD) {
        UA_LOG_WARNING(UA_Log_Stdout, UA_LOGCATEGORY_SERVER,
                       "createEvent failed. StatusCode %s", UA_StatusCode_name(retval));
        return retval;
    }

    /* Set the Event Attributes */
    /* Setting the Time is required or else the event will not show up in UAExpert! */
    UA_DateTime eventTime = UA_DateTime_now();
    UA_Server_writeObjectProperty_scalar(server, *outId, UA_QUALIFIEDNAME(0, "Time"),
                                         &eventTime, &UA_TYPES[UA_TYPES_DATETIME]);
												 
    UA_UInt16 eventSeverity = 100;
    UA_Server_writeObjectProperty_scalar(server, *outId, UA_QUALIFIEDNAME(0, "Severity"),
                                         &eventSeverity, &UA_TYPES[UA_TYPES_UINT16]);

    UA_LocalizedText eventMessage = UA_LOCALIZEDTEXT("en-US", "An event has been generated.");
    UA_Server_writeObjectProperty_scalar(server, *outId, UA_QUALIFIEDNAME(0, "Message"),
                                         &eventMessage, &UA_TYPES[UA_TYPES_LOCALIZEDTEXT]);

    UA_String eventSourceName = UA_STRING("Server");
    UA_Server_writeObjectProperty_scalar(server, *outId, UA_QUALIFIEDNAME(0, "SourceName"),
                                         &eventSourceName, &UA_TYPES[UA_TYPES_STRING]);

    return UA_STATUSCODE_GOOD;
}
Exemple #2
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static UA_StatusCode eventSetup(UA_NodeId *eventNodeId) {
    UA_StatusCode retval;
    retval = UA_Server_createEvent(server, eventType, eventNodeId);
    ck_assert_uint_eq(retval, UA_STATUSCODE_GOOD);
    // add a severity to the event
    UA_Variant value;
    UA_RelativePathElement rpe;
    UA_RelativePathElement_init(&rpe);
    rpe.referenceTypeId = UA_NODEID_NUMERIC(0, UA_NS0ID_HASPROPERTY);
    rpe.isInverse = false;
    rpe.includeSubtypes = false;
    UA_BrowsePath bp;
    UA_BrowsePath_init(&bp);
    bp.startingNode = *eventNodeId;
    bp.relativePath.elementsSize = 1;
    bp.relativePath.elements = &rpe;
    rpe.targetName = UA_QUALIFIEDNAME(0, "Severity");
    UA_BrowsePathResult bpr = UA_Server_translateBrowsePathToNodeIds(server, &bp);
    // number with no special meaning
    UA_UInt16 eventSeverity = 1000;
    UA_Variant_setScalar(&value, &eventSeverity, &UA_TYPES[UA_TYPES_UINT16]);
    UA_Server_writeValue(server, bpr.targets[0].targetId.nodeId, value);
    UA_BrowsePathResult_deleteMembers(&bpr);

    //add a message to the event
    rpe.targetName = UA_QUALIFIEDNAME(0, "Message");
    bpr = UA_Server_translateBrowsePathToNodeIds(server, &bp);
    UA_LocalizedText message = UA_LOCALIZEDTEXT("en-US", "Generated Event");
    UA_Variant_setScalar(&value, &message, &UA_TYPES[UA_TYPES_LOCALIZEDTEXT]);
    UA_Server_writeValue(server, bpr.targets[0].targetId.nodeId, value);
    UA_BrowsePathResult_deleteMembers(&bpr);

    return retval;
}