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Example 1 with Subscription

use of org.eclipse.milo.opcua.sdk.server.subscriptions.Subscription in project milo by eclipse.

the class DefaultSubscriptionServiceSet method onTransferSubscriptions.

@Override
public void onTransferSubscriptions(ServiceRequest service) throws UaException {
    TransferSubscriptionsRequest request = (TransferSubscriptionsRequest) service.getRequest();
    OpcUaServer server = service.attr(ServiceAttributes.SERVER_KEY).get();
    Session session = service.attr(ServiceAttributes.SESSION_KEY).get();
    List<UInteger> subscriptionIds = l(request.getSubscriptionIds());
    if (subscriptionIds.isEmpty()) {
        throw new UaException(StatusCodes.Bad_NothingToDo);
    }
    List<TransferResult> results = Lists.newArrayList();
    for (UInteger subscriptionId : subscriptionIds) {
        Subscription subscription = server.getSubscriptions().get(subscriptionId);
        if (subscription == null) {
            results.add(new TransferResult(new StatusCode(StatusCodes.Bad_SubscriptionIdInvalid), new UInteger[0]));
        } else {
            Session otherSession = subscription.getSession();
            if (!sessionsHaveSameUser(session, otherSession)) {
                results.add(new TransferResult(new StatusCode(StatusCodes.Bad_UserAccessDenied), new UInteger[0]));
            } else {
                UInteger[] availableSequenceNumbers;
                synchronized (subscription) {
                    otherSession.getSubscriptionManager().sendStatusChangeNotification(subscription, new StatusCode(StatusCodes.Good_SubscriptionTransferred));
                    otherSession.getSubscriptionManager().removeSubscription(subscriptionId);
                    subscription.setSubscriptionManager(session.getSubscriptionManager());
                    subscriptionManager.addSubscription(subscription);
                    subscription.getMonitoredItems().values().forEach(item -> item.setSession(session));
                    availableSequenceNumbers = subscription.getAvailableSequenceNumbers();
                    if (request.getSendInitialValues()) {
                        subscription.getMonitoredItems().values().stream().filter(item -> item instanceof MonitoredDataItem).map(item -> (MonitoredDataItem) item).forEach(MonitoredDataItem::maybeSendLastValue);
                    }
                }
                subscription.getSubscriptionDiagnostics().getTransferRequestCount().increment();
                ApplicationDescription toClient = session.getClientDescription();
                ApplicationDescription fromClient = otherSession.getClientDescription();
                if (Objects.equals(toClient, fromClient)) {
                    subscription.getSubscriptionDiagnostics().getTransferredToSameClientCount().increment();
                } else {
                    subscription.getSubscriptionDiagnostics().getTransferredToAltClientCount().increment();
                }
                results.add(new TransferResult(StatusCode.GOOD, availableSequenceNumbers));
            }
        }
    }
    TransferSubscriptionsResponse response = new TransferSubscriptionsResponse(service.createResponseHeader(), a(results, TransferResult.class), new DiagnosticInfo[0]);
    service.setResponse(response);
}
Also used : StatusCodes(org.eclipse.milo.opcua.stack.core.StatusCodes) MonitoredDataItem(org.eclipse.milo.opcua.sdk.server.items.MonitoredDataItem) UInteger(org.eclipse.milo.opcua.stack.core.types.builtin.unsigned.UInteger) Subscription(org.eclipse.milo.opcua.sdk.server.subscriptions.Subscription) TransferResult(org.eclipse.milo.opcua.stack.core.types.structured.TransferResult) TransferSubscriptionsResponse(org.eclipse.milo.opcua.stack.core.types.structured.TransferSubscriptionsResponse) Session(org.eclipse.milo.opcua.sdk.server.Session) OpcUaServer(org.eclipse.milo.opcua.sdk.server.OpcUaServer) ConversionUtil.a(org.eclipse.milo.opcua.stack.core.util.ConversionUtil.a) Objects(java.util.Objects) DiagnosticInfo(org.eclipse.milo.opcua.stack.core.types.builtin.DiagnosticInfo) List(java.util.List) Lists(com.google.common.collect.Lists) ServiceRequest(org.eclipse.milo.opcua.stack.server.services.ServiceRequest) ConversionUtil.l(org.eclipse.milo.opcua.stack.core.util.ConversionUtil.l) StatusCode(org.eclipse.milo.opcua.stack.core.types.builtin.StatusCode) ApplicationDescription(org.eclipse.milo.opcua.stack.core.types.structured.ApplicationDescription) UaException(org.eclipse.milo.opcua.stack.core.UaException) SubscriptionManager(org.eclipse.milo.opcua.sdk.server.subscriptions.SubscriptionManager) SubscriptionServiceSet(org.eclipse.milo.opcua.stack.server.services.SubscriptionServiceSet) TransferSubscriptionsRequest(org.eclipse.milo.opcua.stack.core.types.structured.TransferSubscriptionsRequest) OpcUaServer(org.eclipse.milo.opcua.sdk.server.OpcUaServer) TransferSubscriptionsRequest(org.eclipse.milo.opcua.stack.core.types.structured.TransferSubscriptionsRequest) UaException(org.eclipse.milo.opcua.stack.core.UaException) TransferResult(org.eclipse.milo.opcua.stack.core.types.structured.TransferResult) StatusCode(org.eclipse.milo.opcua.stack.core.types.builtin.StatusCode) ApplicationDescription(org.eclipse.milo.opcua.stack.core.types.structured.ApplicationDescription) MonitoredDataItem(org.eclipse.milo.opcua.sdk.server.items.MonitoredDataItem) UInteger(org.eclipse.milo.opcua.stack.core.types.builtin.unsigned.UInteger) TransferSubscriptionsResponse(org.eclipse.milo.opcua.stack.core.types.structured.TransferSubscriptionsResponse) Subscription(org.eclipse.milo.opcua.sdk.server.subscriptions.Subscription) Session(org.eclipse.milo.opcua.sdk.server.Session)

Example 2 with Subscription

use of org.eclipse.milo.opcua.sdk.server.subscriptions.Subscription in project milo by eclipse.

the class MonitoredEventItem method enqueue.

@Override
protected synchronized void enqueue(Variant[] value) {
    if (queue.size() < queue.maxSize()) {
        queue.add(value);
    } else {
        if (getQueueSize() > 1) {
            eventOverflow.set(true);
            Subscription subscription = session.getSubscriptionManager().getSubscription(subscriptionId);
            if (subscription != null) {
                subscription.getSubscriptionDiagnostics().getEventQueueOverflowCount().increment();
            }
        }
        if (discardOldest) {
            queue.add(value);
        } else {
            queue.set(queue.maxSize() - 1, value);
        }
    }
}
Also used : Subscription(org.eclipse.milo.opcua.sdk.server.subscriptions.Subscription)

Aggregations

Subscription (org.eclipse.milo.opcua.sdk.server.subscriptions.Subscription)2 Lists (com.google.common.collect.Lists)1 List (java.util.List)1 Objects (java.util.Objects)1 OpcUaServer (org.eclipse.milo.opcua.sdk.server.OpcUaServer)1 Session (org.eclipse.milo.opcua.sdk.server.Session)1 MonitoredDataItem (org.eclipse.milo.opcua.sdk.server.items.MonitoredDataItem)1 SubscriptionManager (org.eclipse.milo.opcua.sdk.server.subscriptions.SubscriptionManager)1 StatusCodes (org.eclipse.milo.opcua.stack.core.StatusCodes)1 UaException (org.eclipse.milo.opcua.stack.core.UaException)1 DiagnosticInfo (org.eclipse.milo.opcua.stack.core.types.builtin.DiagnosticInfo)1 StatusCode (org.eclipse.milo.opcua.stack.core.types.builtin.StatusCode)1 UInteger (org.eclipse.milo.opcua.stack.core.types.builtin.unsigned.UInteger)1 ApplicationDescription (org.eclipse.milo.opcua.stack.core.types.structured.ApplicationDescription)1 TransferResult (org.eclipse.milo.opcua.stack.core.types.structured.TransferResult)1 TransferSubscriptionsRequest (org.eclipse.milo.opcua.stack.core.types.structured.TransferSubscriptionsRequest)1 TransferSubscriptionsResponse (org.eclipse.milo.opcua.stack.core.types.structured.TransferSubscriptionsResponse)1 ConversionUtil.a (org.eclipse.milo.opcua.stack.core.util.ConversionUtil.a)1 ConversionUtil.l (org.eclipse.milo.opcua.stack.core.util.ConversionUtil.l)1 ServiceRequest (org.eclipse.milo.opcua.stack.server.services.ServiceRequest)1