| /* |
| 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.plc4x.java.examples.integration.edgent; |
| |
| import org.apache.edgent.function.Supplier; |
| import org.apache.edgent.providers.direct.DirectProvider; |
| import org.apache.edgent.topology.TStream; |
| import org.apache.edgent.topology.Topology; |
| import org.apache.plc4x.edgent.PlcConnectionAdapter; |
| import org.apache.plc4x.edgent.PlcFunctions; |
| |
| import java.util.concurrent.TimeUnit; |
| |
| public class PlcLogger { |
| |
| public static void main(String[] args) throws Exception { |
| CliOptions options = CliOptions.fromArgs(args); |
| if (options == null) { |
| CliOptions.printHelp(); |
| // Could not parse. |
| System.exit(1); |
| } |
| |
| // Get a plc connection. |
| try (PlcConnectionAdapter plcAdapter = new PlcConnectionAdapter(options.getConnectionString())) { |
| // Initialize the Edgent core. |
| DirectProvider dp = new DirectProvider(); |
| Topology top = dp.newTopology(); |
| |
| // Define the event stream. |
| // 1) PLC4X source generating a stream of bytes. |
| Supplier<Byte> plcSupplier = PlcFunctions.byteSupplier(plcAdapter, options.getFieldAddress()); |
| // 2) Use polling to get an item from the byte-stream in regular intervals. |
| TStream<Byte> source = top.poll(plcSupplier, options.getPollingInterval(), TimeUnit.MILLISECONDS); |
| // 3) Output the events in the stream on the console. |
| source.print(); |
| |
| // Submit the topology and hereby start the event streams. |
| dp.submit(top); |
| } |
| } |
| |
| } |