[GitHub] [pulsar] jerrypeng commented on issue #4093: [issue#4042] improve java functions API

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jerrypeng commented on issue #4093: [issue#4042] improve java functions API
URL: https://github.com/apache/pulsar/pull/4093#issuecomment-485072935
 
 
   @sijie I strongly disagree.  Allowing users to the send out messages via 
   ```
   messageBuilder.value("my-topic").key("key").properties("myproperties").sendAsync();
   ```
   breaks the abstraction of functions.  In this case, the user might as well just run a custom java application.  By using a publish message in the context, we can also collect metrics for the user on number of messages outputted and errors on publish.  Allowing users to do this side steps a lot of mechanisms and workflows are ready in place in functions

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