Examples of ZNRecord

Examples of org.apache.helix.ZNRecord

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          "Replicas must be less than number of storage nodes");
    }

    Collections.sort(instanceNames);

    ZNRecord result = new ZNRecord(dbName);

    List<Integer> partitionList = new ArrayList<Integer>(partitions);
    for (int i = 0; i < partitions; i++)
    {
      partitionList.add(new Integer(i));
    }
    Random rand = new Random(randomSeed);
    // Shuffle the partition list
    Collections.shuffle(partitionList, rand);

    for (int i = 0; i < partitionList.size(); i++)
    {
      int partitionId = partitionList.get(i);
      Map<String, String> partitionAssignment = new TreeMap<String, String>();
      int masterNode = i % instanceNames.size();
      // the first in the list is the node that contains the master
      partitionAssignment.put(instanceNames.get(masterNode), masterValue);

      // for the jth replica, we put it on (masterNode + j) % nodes-th
      // node
      for (int j = 1; j <= replicas; j++)
      {
        int index = (masterNode + j * partitionList.size()) % instanceNames.size();
        while(partitionAssignment.keySet().contains(instanceNames.get(index)))
        {
          index = (index +1) % instanceNames.size();
        }
        partitionAssignment
            .put(instanceNames.get(index),
                slaveValue);
      }
      String partitionName = dbName + "_" + partitionId;
      result.setMapField(partitionName, partitionAssignment);
    }
    result.setSimpleField(IdealStateProperty.NUM_PARTITIONS.toString(), String.valueOf(partitions));
    return result;
  }
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Examples of org.apache.helix.ZNRecord

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      LOG.error("Input object must be of type ZNRecord but it is " + data + ". Will not write to zk");
      throw new HelixException("Input object is not of type ZNRecord (was " + data + ")");
    }

    // apply retention policy on list field
    ZNRecord record = (ZNRecord) data;
    int max = getListFieldBound(record);
    if (max < Integer.MAX_VALUE)
    {
      Map<String, List<String>> listMap = record.getListFields();
      for (String key : listMap.keySet())
      {
        List<String> list = listMap.get(key);
        if (list.size() > max)
        {
          listMap.put(key, list.subList(0, max));
        }
      }
    }
   
    StringWriter sw = new StringWriter();
    try
    {
      JsonFactory f = new JsonFactory();
      JsonGenerator g = f.createJsonGenerator(sw);

      g.writeStartObject();

      // write id field
      g.writeRaw("\n  ");
      g.writeStringField("id", record.getId());

      // write simepleFields
      g.writeRaw("\n  ");
      g.writeObjectFieldStart("simpleFields");
      for (String key : record.getSimpleFields().keySet())
      {
        g.writeRaw("\n    ");
        g.writeStringField(key, record.getSimpleField(key));
      }
      g.writeRaw("\n  ");
      g.writeEndObject(); // for simpleFields

      // write listFields
      g.writeRaw("\n  ");
      g.writeObjectFieldStart("listFields");
      for (String key : record.getListFields().keySet())
      {
        // g.writeStringField(key, record.getListField(key).toString());

        // g.writeObjectFieldStart(key);
        g.writeRaw("\n    ");
        g.writeArrayFieldStart(key);
        List<String> list = record.getListField(key);
        for (String listValue : list)
        {
          g.writeString(listValue);
        }
        // g.writeEndObject();
        g.writeEndArray();

      }
      g.writeRaw("\n  ");
      g.writeEndObject(); // for listFields

      // write mapFields
      g.writeRaw("\n  ");
      g.writeObjectFieldStart("mapFields");
      for (String key : record.getMapFields().keySet())
      {
        // g.writeStringField(key, record.getMapField(key).toString());
        g.writeRaw("\n    ");
        g.writeObjectFieldStart(key);
        Map<String, String> map = record.getMapField(key);
        for (String mapKey : map.keySet())
        {
          g.writeRaw("\n      ");
          g.writeStringField(mapKey, map.get(mapKey));
        }
        g.writeRaw("\n    ");
        g.writeEndObject();

      }
      g.writeRaw("\n  ");
      g.writeEndObject(); // for mapFields

      g.writeRaw("\n");
      g.writeEndObject(); // for whole znrecord

      // important: will force flushing of output, close underlying output
      // stream
      g.close();
    }
    catch (Exception e)
    {
      LOG.error("Exception during data serialization. Will not write to zk. Data (first 1k): "
          + sw.toString().substring(0, 1024), e);
      throw new HelixException(e);
    }
   
    // check size
    if (sw.toString().getBytes().length > ZNRecord.SIZE_LIMIT)
    {
      LOG.error("Data size larger than 1M, ZNRecord.id: " + record.getId()
          + ". Will not write to zk. Data (first 1k): " + sw.toString().substring(0, 1024));
      throw new HelixException("Data size larger than 1M, ZNRecord.id: " + record.getId());
    }
   
    return sw.toString().getBytes();
  }
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Examples of org.apache.s4.comm.topology.ZNRecord

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        appPath = appDir + "/s4App";
        zkClient.subscribeDataChanges(appPath, new AppChangeListener());
    }

    public void deployApplication() throws DeploymentFailedException {
        ZNRecord appData = zkClient.readData(appPath);
        String uriString = appData.getSimpleField(S4R_URI);
        String appName = appData.getSimpleField("name");
        try {
            URI uri = new URI(uriString);

            // fetch application
            File localS4RFileCopy;
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