| /* |
| * 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.samza.sql.system; |
| |
| import org.apache.commons.lang3.NotImplementedException; |
| import org.apache.samza.config.Config; |
| import org.apache.samza.metrics.MetricsRegistry; |
| import org.apache.samza.system.OutgoingMessageEnvelope; |
| import org.apache.samza.system.SystemAdmin; |
| import org.apache.samza.system.SystemConsumer; |
| import org.apache.samza.system.SystemFactory; |
| import org.apache.samza.system.SystemProducer; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * Console logging System factory that just writes the messages to the console output. |
| * This system factory is useful when the user wants to print the output of the stream processing to console. |
| */ |
| public class ConsoleLoggingSystemFactory implements SystemFactory { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(ConsoleLoggingSystemFactory.class); |
| |
| @Override |
| public SystemConsumer getConsumer(String systemName, Config config, MetricsRegistry registry) { |
| throw new NotImplementedException("Not Implemented"); |
| } |
| |
| @Override |
| public SystemProducer getProducer(String systemName, Config config, MetricsRegistry registry) { |
| return new LoggingSystemProducer(); |
| } |
| |
| @Override |
| public SystemAdmin getAdmin(String systemName, Config config) { |
| return new SimpleSystemAdmin(config); |
| } |
| |
| private class LoggingSystemProducer implements SystemProducer { |
| @Override |
| public void start() { |
| } |
| |
| @Override |
| public void stop() { |
| } |
| |
| @Override |
| public void register(String source) { |
| LOG.info("Registering source" + source); |
| } |
| |
| @Override |
| public void send(String source, OutgoingMessageEnvelope envelope) { |
| String msg = String.format("OutputStream:%s Key:%s Value:%s", envelope.getSystemStream(), envelope.getKey(), |
| envelope.getMessage()); |
| LOG.info(msg); |
| System.out.println(msg); |
| } |
| |
| @Override |
| public void flush(String source) { |
| } |
| } |
| } |