content: /**
   * 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.apps.logstream;
  
  import java.text.DecimalFormat;
  import java.text.NumberFormat;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.Map.Entry;
  
  import javax.validation.constraints.NotNull;
  
  import org.apache.apex.malhar.lib.io.WidgetOutputOperator;
  import org.apache.apex.malhar.lib.logs.DimensionObject;
  import org.apache.commons.lang3.tuple.MutablePair;
  
  import com.datatorrent.api.Context.OperatorContext;
  import com.datatorrent.api.DefaultInputPort;
  
  import com.datatorrent.apps.logstream.PropertyRegistry.LogstreamPropertyRegistry;
  import com.datatorrent.apps.logstream.PropertyRegistry.PropertyRegistry;
  import java.lang.reflect.Array;
  
  /**
   * Output operator to send outputs to websocket to display on UI widgets.
   *
   * @since 0.9.4
   */
  public class LogstreamWidgetOutputOperator extends WidgetOutputOperator
  {
    @NotNull
    private PropertyRegistry<String> registry;
    public final transient LogstreamTopNInputPort logstreamTopNInput = new LogstreamTopNInputPort(LogstreamWidgetOutputOperator.this);
  
    /**
     * supply the registry object which is used to store and retrieve meta information about each tuple
     *
     * @param registry
     */
    public void setRegistry(PropertyRegistry<String> registry)
    {
      this.registry = registry;
    }
  
    @Override
    public void setup(OperatorContext context)
    {
      super.setup(context);
      LogstreamPropertyRegistry.setInstance(registry);
    }
  
    /**
     * Creates the widget output object from input tuple, populates all the meta information and sends to websocket
     */
    public class LogstreamTopNInputPort extends DefaultInputPort<HashMap<String, ArrayList<DimensionObject<String>>>>
    {
      NumberFormat formatter = new DecimalFormat("#0.00");
      private LogstreamWidgetOutputOperator operator;
  
      public LogstreamTopNInputPort(LogstreamWidgetOutputOperator oper)
      {
        operator = oper;
      }
  
      @Override
      public void process(HashMap<String, ArrayList<DimensionObject<String>>> tuple)
      {
        for (Entry<String, ArrayList<DimensionObject<String>>> entry : tuple.entrySet()) {
          String keyString = entry.getKey();
  
          ArrayList<DimensionObject<String>> arrayList = entry.getValue();
  
          HashMap<String, Object> schemaObj = new HashMap<String, Object>();
  
          String[] keyInfo = keyString.split("\\|");
          HashMap<String, String> tupleMeta = new HashMap<String, String>();
          tupleMeta.put("timeBucket", keyInfo[0]);
          //appMeta.put("timeStamp", key[1]);
          tupleMeta.put("logType", registry.lookupValue(new Integer(keyInfo[2])));
          tupleMeta.put("filter", registry.lookupValue(new Integer(keyInfo[3])));
          tupleMeta.put("dimension", registry.lookupValue(new Integer(keyInfo[4])));
          String[] val = keyInfo[5].split("\\.");
          tupleMeta.put("value", val[0]);
          tupleMeta.put("metric", val[1]);
  
          schemaObj.put("tupleMeta", tupleMeta);
  
          String keyTitle = tupleMeta.get("dimension");
          String valueTitle = tupleMeta.get("metric") + "(" + tupleMeta.get("value") + ")";
  
          schemaObj.put("keyTitle", keyTitle);
          schemaObj.put("valueTitle", valueTitle);
  
          String topic = keyInfo[0] + "|" + keyInfo[2] + "|" + keyInfo[3] + "|" + keyInfo[4] + "|" + keyInfo[5];
  
          setTopic(topic);
  
          HashMap<String, Number> topNMap = new HashMap<String, Number>();
  
          for (DimensionObject<String> dimensionObject : arrayList) {
            topNMap.put(dimensionObject.getVal(), dimensionObject.getCount());
          }
  
          this.processTopN(topNMap, schemaObj);
  
        }
  
      }
  
      private void processTopN(HashMap<String, Number> topNMap, HashMap<String, Object> schemaObj)
      {
        @SuppressWarnings("unchecked")
        HashMap<String, Object>[] result = (HashMap<String, Object>[])Array.newInstance(HashMap.class, topNMap.size());
  
        int j = 0;
        for (Entry<String, Number> e : topNMap.entrySet()) {
          result[j] = new HashMap<String, Object>();
          result[j].put("name", e.getKey());
          String val = formatter.format(e.getValue());
          result[j++].put("value", val);
        }
        if (operator.isWebSocketConnected) {
          schemaObj.put("type", "topN");
          schemaObj.put("n", operator.nInTopN);
          operator.wsoo.input.process(new MutablePair<String, Object>(operator.getFullTopic(operator.topNTopic, schemaObj), result));
        }
        else {
          operator.coo.input.process(topNMap);
        }
  
      }
  
      public LogstreamTopNInputPort setN(int n)
      {
        operator.nInTopN = n;
        return this;
      }
  
      public LogstreamTopNInputPort setTopic(String topic)
      {
        operator.topNTopic = topic;
        return this;
      }
  
    }
  
  }
  