[GitHub] zhaijack opened a new pull request #1354: Issue 1118: refine handlerBase to let only ConsumerImpl and ProducerImpl have client-cnx

[GitBox <gi...@apache.org>]

zhaijack opened a new pull request #1354: Issue 1118: refine handlerBase to let only ConsumerImpl and ProducerImpl have client-cnx
URL: https://github.com/apache/incubator-pulsar/pull/1354
 
 
   ### Motivation
   
    class HandlerBase contains 2 parts:
   - handler state;  this is need for all handler.
   - client_cnx connection handling; this part only useful in ConsumerImpl and ProducerImpl, while not need for PartitionedConsumer, PartitionedProducer, TopicsConsumer.
   
   This change would like to refine HandlerBase into 2 parts, to make client_cnx connection handling only served in ConsumerImpl and ProducerImpl
   
   ### Modifications
   
   Split HandlerBase into 2 class: 
   - HandlerState: handling the state of every consumer/producer;
   - ConnectionHandler: handling the client_cnx connection for ConsumerImpl and ProducerImpl.
   
   ### Result
   no api changes. 

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