private void AddPartitionTopicInfo(
Pool <string, Pool <int, PartitionTopicInfo> > currentTopicRegistry,
ZKGroupTopicDirs topicDirs,
int partition,
string topic,
string consumerThreadId)
{
var partTopicInfoMap = currentTopicRegistry.Get(topic);
var znode = topicDirs.ConsumerOffsetDir + "/" + partition;
var offsetString = ZkUtils.ReadDataMaybeNull(parent.zkClient, znode).Item1;
// If first time starting a consumer, set the initial offset to -1
var offset = (offsetString != null) ? long.Parse(offsetString) : PartitionTopicInfo.InvalidOffset;
var queue = parent.topicThreadIdAndQueues.Get(Tuple.Create(topic, consumerThreadId));
var consumedOffset = new AtomicLong(offset);
var fetchedOffset = new AtomicLong(offset);
var partTopicInfo = new PartitionTopicInfo(
topic,
partition,
queue,
consumedOffset,
fetchedOffset,
new AtomicInteger(parent.Config.FetchMessageMaxBytes),
parent.Config.ClientId);
partTopicInfoMap[partition] = partTopicInfo;
Logger.DebugFormat("{0} selected new offset {1}", partTopicInfo, offset);
parent.checkpointedOffsets[new TopicAndPartition(topic, partition)] = offset;
}