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

Example 1 with ReadRequest

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

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

the class DefaultAttributeServiceSet method onRead.

@Override
public void onRead(ServiceRequest service) {
    ReadRequest request = (ReadRequest) service.getRequest();
    OpcUaServer server = service.attr(ServiceAttributes.SERVER_KEY).get();
    Session session = service.attr(ServiceAttributes.SESSION_KEY).get();
    List<ReadValueId> nodesToRead = l(request.getNodesToRead());
    if (nodesToRead.isEmpty()) {
        service.setServiceFault(StatusCodes.Bad_NothingToDo);
        return;
    }
    if (nodesToRead.size() > server.getConfig().getLimits().getMaxNodesPerRead().longValue()) {
        service.setServiceFault(StatusCodes.Bad_TooManyOperations);
        return;
    }
    if (request.getMaxAge() < 0d) {
        service.setServiceFault(StatusCodes.Bad_MaxAgeInvalid);
        return;
    }
    if (request.getTimestampsToReturn() == null) {
        service.setServiceFault(StatusCodes.Bad_TimestampsToReturnInvalid);
        return;
    }
    DiagnosticsContext<ReadValueId> diagnosticsContext = new DiagnosticsContext<>();
    ReadContext context = new ReadContext(server, session, diagnosticsContext);
    server.getAddressSpaceManager().read(context, request.getMaxAge(), request.getTimestampsToReturn(), nodesToRead);
    context.getFuture().thenAccept(values -> {
        ResponseHeader header = service.createResponseHeader();
        DiagnosticInfo[] diagnosticInfos = diagnosticsContext.getDiagnosticInfos(nodesToRead);
        ReadResponse response = new ReadResponse(header, values.toArray(new DataValue[0]), diagnosticInfos);
        service.setResponse(response);
    });
}

Example 3 with ReadRequest

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

the class ClientServerTest method connectAndTest.

private void connectAndTest(Variant input, UaStackClient client) throws InterruptedException, java.util.concurrent.ExecutionException {
    setReadRequestHandler(input);
    client.connect().get();
    List<CompletableFuture<ReadResponse>> responses = Lists.newArrayList();
    for (int i = 0; i < 100; i++) {
        RequestHeader header = new RequestHeader(NodeId.NULL_VALUE, DateTime.now(), uint(i), uint(0), null, uint(10000), null);
        ReadRequest request = new ReadRequest(header, 0.0, TimestampsToReturn.Neither, new ReadValueId[] { new ReadValueId(NodeId.NULL_VALUE, AttributeId.Value.uid(), null, null) });
        responses.add(client.sendRequest(request).thenApply(ReadResponse.class::cast));
    }
    CompletableFuture.allOf(responses.toArray(new CompletableFuture[0])).get();
    FutureUtils.sequence(responses).get().forEach(response -> {
        Variant value = l(response.getResults()).get(0).getValue();
        assertEquals(value, input);
    });
    client.disconnect().get();
}

Example 4 with ReadRequest

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

the class ClientServerTest method testClientDisconnect.

@Test
public void testClientDisconnect() throws Exception {
    EndpointDescription endpoint = endpoints[0];
    Variant input = new Variant(42);
    logger.info("SecurityPolicy={}, MessageSecurityMode={}, input={}", SecurityPolicy.fromUri(endpoint.getSecurityPolicyUri()), endpoint.getSecurityMode(), input);
    UaStackClient client = createClient(endpoint);
    client.connect().get();
    RequestHeader header = new RequestHeader(NodeId.NULL_VALUE, DateTime.now(), uint(0), uint(0), null, DEFAULT_TIMEOUT_HINT, null);
    ReadRequest request = new ReadRequest(header, 0.0, TimestampsToReturn.Neither, new ReadValueId[] { new ReadValueId(NodeId.NULL_VALUE, AttributeId.Value.uid(), null, null) });
    logger.info("sending request: {}", request);
    UaResponseMessage response0 = client.sendRequest(request).get();
    logger.info("got response: {}", response0);
    client.disconnect().get();
    assertThrows(() -> client.sendRequest(request).get());
}

Example 5 with ReadRequest

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

the class ClientServerTest method testClientTimeout.

@Test
public void testClientTimeout() throws Exception {
    EndpointDescription endpoint = endpoints[0];
    logger.info("SecurityPolicy={}, MessageSecurityMode={}", SecurityPolicy.fromUri(endpoint.getSecurityPolicyUri()), endpoint.getSecurityMode());
    UaStackClientConfig config = UaStackClientConfig.builder().setEndpoint(endpoint).setKeyPair(clientKeyPair).setCertificate(clientCertificate).build();
    UaStackClient client = UaStackClient.create(config);
    client.connect().get();
    server.addServiceHandler("/test", ReadRequest.TYPE_ID, service -> {
        // intentionally do nothing so the request can timeout
        logger.info("received {}; ignoring...", service.getRequest());
    });
    RequestHeader header = new RequestHeader(NodeId.NULL_VALUE, DateTime.now(), uint(0), uint(0), null, uint(1000), null);
    ReadRequest request = new ReadRequest(header, 0.0, TimestampsToReturn.Neither, new ReadValueId[] { new ReadValueId(NodeId.NULL_VALUE, AttributeId.Value.uid(), null, null) });
    try {
        client.sendRequest(request).get();
        fail("expected response to timeout");
    } catch (Throwable t) {
        StatusCode statusCode = UaException.extractStatusCode(t).orElse(StatusCode.BAD);
        assertEquals(statusCode.getValue(), StatusCodes.Bad_Timeout);
    }
}