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

Example 1 with ReferenceDescription

use of org.eclipse.milo.opcua.stack.core.types.structured.ReferenceDescription 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 2 with ReferenceDescription

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

the class AddressSpace method browseNodesAsync.

/**
 * Browse from {@code nodeId} using {@code browseOptions}.
 * <p>
 * This call completes asynchronously.
 *
 * @param nodeId        the {@link NodeId} to start the browse from.
 * @param browseOptions the {@link BrowseOptions} to use.
 * @return a CompletableFuture that completes successfully with a List of {@link UaNode}s
 * referenced by {@code node} given the currently configured {@link BrowseOptions} or completes
 * exceptionally if a service-level error occurs.
 */
public CompletableFuture<List<? extends UaNode>> browseNodesAsync(NodeId nodeId, BrowseOptions browseOptions) {
    BrowseDescription browseDescription = new BrowseDescription(nodeId, browseOptions.getBrowseDirection(), browseOptions.getReferenceTypeId(), browseOptions.isIncludeSubtypes(), browseOptions.getNodeClassMask(), uint(BrowseResultMask.All.getValue()));
    CompletableFuture<List<ReferenceDescription>> browse = BrowseHelper.browse(client, browseDescription, browseOptions.getMaxReferencesPerNode());
    return browse.thenCompose(references -> {
        List<CompletableFuture<? extends UaNode>> cfs = references.stream().map(reference -> {
            NodeClass nodeClass = reference.getNodeClass();
            ExpandedNodeId xNodeId = reference.getNodeId();
            ExpandedNodeId xTypeDefinitionId = reference.getTypeDefinition();
            switch(nodeClass) {
                case Object:
                case Variable:
                    {
                        CompletableFuture<CompletableFuture<? extends UaNode>> ff = toNodeIdAsync(xNodeId).thenCombine(toNodeIdAsync(xTypeDefinitionId), (targetNodeId, typeDefinitionId) -> {
                            if (nodeClass == NodeClass.Object) {
                                return getObjectNodeAsync(targetNodeId, typeDefinitionId);
                            } else {
                                return getVariableNodeAsync(targetNodeId, typeDefinitionId);
                            }
                        });
                        return unwrap(ff).exceptionally(ex -> {
                            logger.warn("Failed to create Node from Reference to {}", reference.getNodeId(), ex);
                            return null;
                        });
                    }
                default:
                    {
                        // TODO specialized getNode for other NodeClasses?
                        return toNodeIdAsync(xNodeId).thenCompose(this::getNodeAsync).exceptionally(ex -> {
                            logger.warn("Failed to create Node from Reference to {}", reference.getNodeId(), ex);
                            return null;
                        });
                    }
            }
        }).collect(Collectors.toList());
        return sequence(cfs);
    });
}

Example 3 with ReferenceDescription

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

the class DataTypeTreeBuilder method addChildren.

private static CompletableFuture<Unit> addChildren(Tree<DataTypeTree.DataType> tree, UaStackClient client, OpcUaSession session, NamespaceTable namespaceTable) {
    CompletableFuture<List<ReferenceDescription>> subtypes = browseSafe(client, session, new BrowseDescription(tree.getValue().getNodeId(), BrowseDirection.Forward, Identifiers.HasSubtype, false, uint(NodeClass.DataType.getValue()), uint(BrowseResultMask.All.getValue())));
    CompletableFuture<List<DataTypeTree.DataType>> dataTypesFuture = subtypes.thenCompose(references -> {
        Stream<CompletableFuture<DataTypeTree.DataType>> dataTypeFutures = references.stream().map(dataTypeReference -> {
            NodeId dataTypeId = dataTypeReference.getNodeId().toNodeId(namespaceTable).orElse(NodeId.NULL_VALUE);
            CompletableFuture<List<ReferenceDescription>> encodings = browseSafe(client, session, new BrowseDescription(dataTypeId, BrowseDirection.Forward, Identifiers.HasEncoding, false, uint(NodeClass.Object.getValue()), uint(BrowseResultMask.All.getValue())));
            return encodings.thenApply(encodingReferences -> {
                NodeId binaryEncodingId = null;
                NodeId xmlEncodingId = null;
                for (ReferenceDescription r : encodingReferences) {
                    if (r.getBrowseName().equals(OpcUaDefaultBinaryEncoding.ENCODING_NAME)) {
                        binaryEncodingId = r.getNodeId().toNodeId(namespaceTable).orElse(null);
                    } else if (r.getBrowseName().equals(OpcUaDefaultXmlEncoding.ENCODING_NAME)) {
                        xmlEncodingId = r.getNodeId().toNodeId(namespaceTable).orElse(null);
                    }
                }
                return new DataTypeTree.DataType(dataTypeReference.getBrowseName(), dataTypeId, binaryEncodingId, xmlEncodingId);
            });
        });
        return FutureUtils.sequence(dataTypeFutures);
    });
    return dataTypesFuture.thenCompose(dataTypes -> {
        Stream<CompletableFuture<Unit>> futures = dataTypes.stream().map(tree::addChild).map(childNode -> addChildren(childNode, client, session, namespaceTable));
        return FutureUtils.sequence(futures);
    }).thenApply(v -> Unit.VALUE);
}

Example 4 with ReferenceDescription

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

the class UaNode method getComponentAsync.

protected CompletableFuture<? extends UaNode> getComponentAsync(QualifiedName browseName, NodeClass nodeClass) {
    UInteger nodeClassMask = uint(nodeClass.getValue());
    UInteger resultMask = uint(BrowseResultMask.All.getValue());
    CompletableFuture<BrowseResult> future = client.browse(new BrowseDescription(getNodeId(), BrowseDirection.Forward, Identifiers.HasComponent, false, nodeClassMask, resultMask));
    return future.thenCompose(result -> {
        List<ReferenceDescription> references = l(result.getReferences());
        Optional<CompletableFuture<? extends UaNode>> node = references.stream().filter(r -> browseName.equals(r.getBrowseName())).flatMap(r -> {
            Optional<CompletableFuture<? extends UaNode>> opt = r.getNodeId().toNodeId(client.getNamespaceTable()).map(id -> client.getAddressSpace().getNodeAsync(id));
            return opt2stream(opt);
        }).findFirst();
        return node.orElse(failedUaFuture(StatusCodes.Bad_NotFound));
    });
}

Example 5 with ReferenceDescription

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

the class DataTypeDictionaryReader method maybeBrowseNext.

private CompletionStage<List<ReferenceDescription>> maybeBrowseNext(BrowseResult result, List<ReferenceDescription> references) {
    if (result.getStatusCode().isGood()) {
        ReferenceDescription[] rds = result.getReferences();
        if (rds != null)
            Collections.addAll(references, rds);
        ByteString continuationPoint = result.getContinuationPoint();
        if (continuationPoint.isNotNull()) {
            logger.debug("Continuation point was non-null; calling BrowseNext");
            return browseNextAsync(continuationPoint, references);
        } else {
            logger.debug("Browse finished with {} references", references.size());
            return completedFuture(references);
        }
    } else {
        return completedFuture(references);
    }
}