| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.camel.component.milo.client; |
| |
| import static java.util.Objects.requireNonNull; |
| |
| import org.apache.camel.Exchange; |
| import org.apache.camel.Message; |
| import org.apache.camel.Processor; |
| import org.apache.camel.component.milo.Messages; |
| import org.apache.camel.component.milo.client.MiloClientConnection.MonitorHandle; |
| import org.apache.camel.support.DefaultConsumer; |
| import org.apache.camel.support.DefaultMessage; |
| import org.eclipse.milo.opcua.stack.core.types.builtin.DataValue; |
| import org.eclipse.milo.opcua.stack.core.types.builtin.ExpandedNodeId; |
| |
| public class MiloClientConsumer extends DefaultConsumer { |
| |
| private final MiloClientConnection connection; |
| |
| private MonitorHandle handle; |
| |
| private ExpandedNodeId node; |
| |
| private Double samplingInterval; |
| |
| public MiloClientConsumer(final MiloClientEndpoint endpoint, final Processor processor, final MiloClientConnection connection) { |
| super(endpoint, processor); |
| |
| requireNonNull(connection); |
| |
| this.connection = connection; |
| this.node = endpoint.getNodeId(); |
| this.samplingInterval = endpoint.getSamplingInterval(); |
| } |
| |
| @Override |
| protected void doStart() throws Exception { |
| super.doStart(); |
| |
| this.handle = this.connection.monitorValue(this.node, this.samplingInterval, this::handleValueUpdate); |
| } |
| |
| @Override |
| protected void doStop() throws Exception { |
| if (this.handle != null) { |
| this.handle.unregister(); |
| this.handle = null; |
| } |
| |
| super.doStop(); |
| } |
| |
| private void handleValueUpdate(final DataValue value) { |
| log.debug("Handle item update - {} = {}", node, value); |
| |
| final Exchange exchange = getEndpoint().createExchange(); |
| exchange.setIn(mapMessage(value)); |
| try { |
| getAsyncProcessor().process(exchange); |
| } catch (final Exception e) { |
| log.debug("Failed to process message", e); |
| } |
| } |
| |
| private Message mapMessage(final DataValue value) { |
| if (value == null) { |
| return null; |
| } |
| |
| final DefaultMessage result = new DefaultMessage(getEndpoint().getCamelContext()); |
| |
| Messages.fillFromDataValue(value, result); |
| |
| return result; |
| } |
| |
| } |