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

Example 1 with RequestHeader

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

the class DataTypeDictionaryReader method browseNextAsync.

private CompletableFuture<List<ReferenceDescription>> browseNextAsync(ByteString continuationPoint, List<ReferenceDescription> references) {
    RequestHeader requestHeader = stackClient.newRequestHeader(session.getAuthenticationToken(), stackClient.getConfig().getRequestTimeout());
    BrowseNextRequest request = new BrowseNextRequest(requestHeader, false, new ByteString[] { continuationPoint });
    return stackClient.sendRequest(request).thenApply(BrowseNextResponse.class::cast).thenCompose(response -> {
        BrowseResult result = l(response.getResults()).get(0);
        return maybeBrowseNext(result, references);
    });
}

Example 2 with RequestHeader

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

the class DataTypeDictionaryReader method browseNode.

private CompletableFuture<List<ReferenceDescription>> browseNode(BrowseDescription browseDescription) {
    RequestHeader requestHeader = stackClient.newRequestHeader(session.getAuthenticationToken(), stackClient.getConfig().getRequestTimeout());
    BrowseRequest browseRequest = new BrowseRequest(requestHeader, new ViewDescription(NodeId.NULL_VALUE, DateTime.MIN_VALUE, uint(0)), uint(0), new BrowseDescription[] { browseDescription });
    return stackClient.sendRequest(browseRequest).thenApply(BrowseResponse.class::cast).thenApply(r -> Objects.requireNonNull(r.getResults())[0]).thenCompose(result -> {
        List<ReferenceDescription> references = Collections.synchronizedList(new ArrayList<>());
        return maybeBrowseNext(result, references);
    });
}

Example 3 with RequestHeader

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

the class OpcUaClient method readNamespaceTableAsync.

/**
 * Read the server's NamespaceTable and update the local copy.
 * <p>
 * This call completes asynchronously.
 *
 * @return a {@link CompletableFuture} that completes successfully with the updated
 * {@link NamespaceTable} or completes exceptionally if a service- or operation-level error
 * occurs.
 */
public CompletableFuture<NamespaceTable> readNamespaceTableAsync() {
    return getSession().thenCompose(session -> {
        RequestHeader requestHeader = newRequestHeader(session.getAuthenticationToken());
        ReadRequest readRequest = new ReadRequest(requestHeader, 0.0, TimestampsToReturn.Neither, new ReadValueId[] { new ReadValueId(Identifiers.Server_NamespaceArray, AttributeId.Value.uid(), null, QualifiedName.NULL_VALUE) });
        CompletableFuture<String[]> namespaceArray = sendRequest(readRequest).thenApply(ReadResponse.class::cast).thenApply(response -> Objects.requireNonNull(response.getResults())).thenApply(results -> (String[]) results[0].getValue().getValue());
        return namespaceArray.thenAccept(this::updateNamespaceTable).thenApply(v -> getNamespaceTable());
    });
}

Example 4 with RequestHeader

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

the class AbstractTransport method scheduleRequestTimeout.

private void scheduleRequestTimeout(UaTransportRequest transportRequest) {
    RequestHeader requestHeader = transportRequest.getRequest().getRequestHeader();
    long timeoutHint = requestHeader.getTimeoutHint() != null ? requestHeader.getTimeoutHint().longValue() : 0L;
    if (timeoutHint > 0) {
        Timeout timeout = wheelTimer.newTimeout(t -> {
            UaException exception = new UaException(StatusCodes.Bad_Timeout, String.format("requestId=%s timed out after %sms", requestHeader.getRequestHandle(), timeoutHint));
            transportRequest.getFuture().completeExceptionally(exception);
        }, timeoutHint, TimeUnit.MILLISECONDS);
        transportRequest.setTimeout(timeout);
    }
}

Example 5 with RequestHeader

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

the class UaStackClient method sendRequest.

/**
 * Send a {@link UaRequestMessage} to the connected server.
 * <p>
 * The {@link RequestHeader} of {@code request} must have a unique request handle. Use the
 * {@code newRequestHeader} helper functions to create headers for {@link UaRequestMessage}s.
 *
 * @param request the {@link UaRequestMessage} to send.
 * @return a {@link CompletableFuture} containing the eventual {@link UaResponseMessage} from the server.
 * @see #newRequestHeader()
 * @see #newRequestHeader(NodeId)
 * @see #newRequestHeader(NodeId, UInteger)
 */
public CompletableFuture<UaResponseMessage> sendRequest(UaRequestMessage request) {
    RequestHeader requestHeader = request.getRequestHeader();
    UInteger requestHandle = requestHeader.getRequestHandle();
    final CompletableFuture<UaResponseMessage> future = new CompletableFuture<>();
    pending.put(requestHandle, future);
    transport.sendRequest(request).whenComplete((response, ex) -> {
        pending.remove(requestHandle);
        deliverResponse(request, response, ex, future);
    });
    return future;
}