Examples with ModifyMonitoredItemsRequest org.eclipse.milo.opcua.stack.core.types.structured.ModifyMonitoredItemsRequest used on opensource projects

Example 1 with ModifyMonitoredItemsRequest

use of org.eclipse.milo.opcua.stack.core.types.structured.ModifyMonitoredItemsRequest in project milo by eclipse.

the class SubscriptionManager method modifyMonitoredItems.

public void modifyMonitoredItems(ServiceRequest service) throws UaException {
    ModifyMonitoredItemsRequest request = (ModifyMonitoredItemsRequest) service.getRequest();
    UInteger subscriptionId = request.getSubscriptionId();
    Subscription subscription = subscriptions.get(subscriptionId);
    TimestampsToReturn timestamps = request.getTimestampsToReturn();
    List<MonitoredItemModifyRequest> itemsToModify = l(request.getItemsToModify());
    if (subscription == null) {
        throw new UaException(StatusCodes.Bad_SubscriptionIdInvalid);
    }
    if (timestamps == null) {
        throw new UaException(StatusCodes.Bad_TimestampsToReturnInvalid);
    }
    if (itemsToModify.isEmpty()) {
        throw new UaException(StatusCodes.Bad_NothingToDo);
    }
    List<NodeId> distinctNodeIds = itemsToModify.stream().map(item -> {
        UInteger itemId = item.getMonitoredItemId();
        BaseMonitoredItem<?> monitoredItem = subscription.getMonitoredItems().get(itemId);
        return monitoredItem != null ? monitoredItem.getReadValueId().getNodeId() : NodeId.NULL_VALUE;
    }).filter(NodeId::isNotNull).distinct().collect(toList());
    CompletableFuture<Map<NodeId, AttributeGroup>> attributesFuture = readMonitoringAttributes(distinctNodeIds);
    attributesFuture.thenAccept(attributeGroups -> {
        MonitoredItemModifyResult[] modifyResults = new MonitoredItemModifyResult[itemsToModify.size()];
        List<BaseMonitoredItem<?>> monitoredItems = new ArrayList<>();
        for (int i = 0; i < itemsToModify.size(); i++) {
            MonitoredItemModifyRequest modifyRequest = itemsToModify.get(i);
            try {
                BaseMonitoredItem<?> monitoredItem = modifyMonitoredItem(modifyRequest, timestamps, subscription, attributeGroups);
                monitoredItems.add(monitoredItem);
                modifyResults[i] = new MonitoredItemModifyResult(StatusCode.GOOD, monitoredItem.getSamplingInterval(), uint(monitoredItem.getQueueSize()), monitoredItem.getFilterResult());
            } catch (UaException e) {
                modifyResults[i] = new MonitoredItemModifyResult(e.getStatusCode(), 0.0, UInteger.MIN, null);
            }
        }
        subscription.resetLifetimeCounter();
        /*
             * Notify AddressSpaces of the items we just modified.
             */
        byMonitoredItemType(monitoredItems, dataItems -> server.getAddressSpaceManager().onDataItemsModified(dataItems), eventItems -> server.getAddressSpaceManager().onEventItemsModified(eventItems));
        /*
             * AddressSpaces have been notified; send response.
             */
        ResponseHeader header = service.createResponseHeader();
        ModifyMonitoredItemsResponse response = new ModifyMonitoredItemsResponse(header, modifyResults, new DiagnosticInfo[0]);
        service.setResponse(response);
    });
}