Examples with UaMonitoredItem org.eclipse.milo.opcua.sdk.client.api.subscriptions.UaMonitoredItem used on opensource projects

Example 11 with UaMonitoredItem

use of org.eclipse.milo.opcua.sdk.client.api.subscriptions.UaMonitoredItem in project milo by eclipse.

the class ManagedSubscription method createDataItemsAsync.

/**
 * Create {@link ManagedDataItem}s monitoring the Nodes and Attributes identified by {@code readValueIds}.
 * <p>
 * {@code consumer} will receive each item as it is created to provide an opportunity to add a
 * {@link DataValueListener} before the first value change has arrived.
 * <p>
 * The operation results should be checked before each item is used further.
 * See {@link ManagedDataItem#getStatusCode()}.
 * <p>
 * This call completes asynchronously.
 *
 * @param samplingInterval the sampling interval to request.
 * @param readValueIds     the {@link ReadValueId}s identifying the Nodes and Attributes.
 * @param consumer         a {@link Consumer} that will receive each item as it is created.
 * @return a {@link CompletableFuture} that completes successfully with a List of {@link ManagedDataItem} or
 * completes exceptionally if a service-level error occurs.
 */
public CompletableFuture<List<ManagedDataItem>> createDataItemsAsync(double samplingInterval, List<ReadValueId> readValueIds, Consumer<ManagedDataItem> consumer) {
    final ExtensionObject filter = getDefaultDataFilter();
    final UInteger queueSize = getDefaultQueueSize();
    final boolean discardOldest = getDefaultDiscardOldest();
    List<MonitoredItemCreateRequest> createRequests = readValueIds.stream().map(readValueId -> {
        MonitoringParameters parameters = new MonitoringParameters(subscription.nextClientHandle(), samplingInterval, filter, queueSize, discardOldest);
        return new MonitoredItemCreateRequest(readValueId, getDefaultMonitoringMode(), parameters);
    }).collect(Collectors.toList());
    CompletableFuture<List<UaMonitoredItem>> monitoredItems = subscription.createMonitoredItems(getDefaultTimestamps(), createRequests, (item, id) -> {
        ManagedDataItem dataItem = createAndTrackDataItem(item);
        consumer.accept(dataItem);
    });
    return monitoredItems.thenApply(items -> items.stream().map(item -> dataItems.get(item.getClientHandle())).filter(Objects::nonNull).collect(Collectors.toList()));
}

Example 12 with UaMonitoredItem

use of org.eclipse.milo.opcua.sdk.client.api.subscriptions.UaMonitoredItem in project milo by eclipse.

the class OpcUaSubscription method createMonitoredItems.

@Override
public CompletableFuture<List<UaMonitoredItem>> createMonitoredItems(TimestampsToReturn timestampsToReturn, List<MonitoredItemCreateRequest> itemsToCreate) {
    CompletableFuture<CreateMonitoredItemsResponse> future = client.createMonitoredItems(subscriptionId, timestampsToReturn, itemsToCreate);
    return future.thenApply(response -> {
        List<MonitoredItemCreateResult> results = l(response.getResults());
        List<UaMonitoredItem> createdItems = newArrayListWithCapacity(itemsToCreate.size());
        for (int i = 0; i < itemsToCreate.size(); i++) {
            MonitoredItemCreateRequest request = itemsToCreate.get(i);
            MonitoredItemCreateResult result = results.get(i);
            OpcUaMonitoredItem item = new OpcUaMonitoredItem(client, request.getRequestedParameters().getClientHandle(), request.getItemToMonitor(), result.getMonitoredItemId(), result.getStatusCode(), result.getRevisedSamplingInterval(), result.getRevisedQueueSize(), result.getFilterResult(), request.getMonitoringMode(), request.getRequestedParameters().getFilter(), request.getRequestedParameters().getDiscardOldest(), timestampsToReturn);
            item.setRequestedSamplingInterval(request.getRequestedParameters().getSamplingInterval());
            item.setRequestedQueueSize(request.getRequestedParameters().getQueueSize());
            if (item.getStatusCode().isGood()) {
                itemsByClientHandle.put(item.getClientHandle(), item);
                itemsByServerHandle.put(item.getMonitoredItemId(), item);
            }
            createdItems.add(item);
        }
        return createdItems;
    });
}

Example 13 with UaMonitoredItem

use of org.eclipse.milo.opcua.sdk.client.api.subscriptions.UaMonitoredItem in project milo by eclipse.

the class TriggeringExample method createMonitoredItem.

private UaMonitoredItem createMonitoredItem(UaSubscription subscription, ReadValueId readValueId, MonitoringMode monitoringMode) throws ExecutionException, InterruptedException {
    // important: client handle must be unique per item
    UInteger clientHandle = uint(clientHandles.getAndIncrement());
    MonitoringParameters parameters = new MonitoringParameters(clientHandle, 1000.0, null, uint(10), true);
    MonitoredItemCreateRequest request = new MonitoredItemCreateRequest(readValueId, monitoringMode, parameters);
    UaSubscription.ItemCreationCallback onItemCreated = (item, id) -> item.setValueConsumer(this::onSubscriptionValue);
    List<UaMonitoredItem> items = subscription.createMonitoredItems(TimestampsToReturn.Both, newArrayList(request), onItemCreated).get();
    return items.get(0);
}