| /** |
| * 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 com.datatorrent.lib.io; |
| |
| import java.util.Map; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.datatorrent.api.DefaultInputPort; |
| import com.datatorrent.common.util.BaseOperator; |
| |
| /** |
| * This operator writes tuples which are maps to standard out of the container. |
| * <p> |
| * This is for specific use case for map where I want to print each key value |
| * pair in different line <br> |
| * Mainly to be used for debugging. Users should be careful to not have this |
| * node listen to a high throughput stream<br> |
| * <br> |
| * </p> |
| * @displayName Map Console Output |
| * @category Output |
| * @tags output operator |
| * |
| * @since 0.3.4 |
| */ |
| @org.apache.hadoop.classification.InterfaceStability.Evolving |
| public class MapMultiConsoleOutputOperator<K, V> extends BaseOperator |
| { |
| private boolean debug = false; |
| |
| public boolean isDebug() |
| { |
| return debug; |
| } |
| |
| public void setDebug(boolean debug) |
| { |
| this.debug = debug; |
| } |
| |
| private static final Logger logger = LoggerFactory.getLogger(MapMultiConsoleOutputOperator.class); |
| public final transient DefaultInputPort<Map<K, V>> input = new DefaultInputPort<Map<K, V>>() |
| { |
| @Override |
| public void process(Map<K, V> t) |
| { |
| System.out.println("{"); |
| for (Map.Entry<K, V> entry : t.entrySet()) { |
| if (!silent) { |
| System.out.println(entry.getKey().toString() + "=" + entry.getValue().toString()); |
| } |
| if (debug) { |
| logger.info(entry.getKey().toString() + "=" + entry.getValue().toString()); |
| } |
| } |
| System.out.println("}"); |
| } |
| }; |
| |
| boolean silent = false; |
| |
| public boolean isSilent() |
| { |
| return silent; |
| } |
| |
| public void setSilent(boolean silent) |
| { |
| this.silent = silent; |
| } |
| |
| } |