| /** |
| * 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.logs; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.commons.lang.mutable.MutableDouble; |
| |
| import com.datatorrent.api.Context.OperatorContext; |
| import com.datatorrent.api.DefaultInputPort; |
| import com.datatorrent.api.DefaultOutputPort; |
| import com.datatorrent.api.Operator; |
| |
| /** |
| * This unifier ingests tuples that are Maps from Strings to DimensionObjects and sums the corresponding DimensionObjects. |
| * A Map from Strings to aggregated DimensionObjects is emitted by the unifier. |
| * <p></p> |
| * @displayName Dimension Aggregation Unifier |
| * @category Stats and Aggregations |
| * @tags aggregation, unifier, dimensions |
| * |
| * @since 0.9.0 |
| */ |
| public class DimensionAggregationUnifier implements Operator |
| { |
| |
| private Map<String, Map<String, MutableDouble>> dataMap = new HashMap<String, Map<String, MutableDouble>>(); |
| |
| public final transient DefaultOutputPort<Map<String, DimensionObject<String>>> output = new DefaultOutputPort<>(); |
| |
| public final transient DefaultInputPort<Map<String, DimensionObject<String>>> input = new DefaultInputPort<Map<String, DimensionObject<String>>>() |
| { |
| |
| @Override |
| public void process(Map<String, DimensionObject<String>> tuple) |
| { |
| for (Map.Entry<String, DimensionObject<String>> e : tuple.entrySet()) { |
| Map<String, MutableDouble> obj = dataMap.get(e.getKey()); |
| DimensionObject<String> eObj = e.getValue(); |
| if (obj == null) { |
| obj = new HashMap<String, MutableDouble>(); |
| obj.put(eObj.getVal(), new MutableDouble(eObj.getCount())); |
| dataMap.put(e.getKey(), obj); |
| } else { |
| MutableDouble n = obj.get(eObj.getVal()); |
| if (n == null) { |
| obj.put(eObj.getVal(), new MutableDouble(eObj.getCount())); |
| } else { |
| n.add(eObj.getCount()); |
| } |
| } |
| } |
| |
| } |
| }; |
| |
| @Override |
| public void setup(OperatorContext context) |
| { |
| // TODO Auto-generated method stub |
| |
| } |
| |
| @Override |
| public void teardown() |
| { |
| // TODO Auto-generated method stub |
| |
| } |
| |
| @Override |
| public void beginWindow(long windowId) |
| { |
| dataMap = new HashMap<String, Map<String, MutableDouble>>(); |
| // TODO Auto-generated method stub |
| |
| } |
| |
| @Override |
| public void endWindow() |
| { |
| for (Map.Entry<String, Map<String, MutableDouble>> e : dataMap.entrySet()) { |
| for (Map.Entry<String, MutableDouble> dimensionValObj : e.getValue().entrySet()) { |
| Map<String, DimensionObject<String>> outputData = new HashMap<String, DimensionObject<String>>(); |
| outputData.put(e.getKey(), new DimensionObject<String>(dimensionValObj.getValue(), dimensionValObj.getKey())); |
| output.emit(outputData); |
| } |
| } |
| dataMap.clear(); |
| } |
| |
| } |