[GitHub] [pulsar] freeznet commented on issue #9022: Expose message metadata in Pulsar function Go

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

freeznet commented on issue #9022:
URL: https://github.com/apache/pulsar/issues/9022#issuecomment-749532247


   `Context` already holds the message metadata in golang function. you can check the Golang part of [context docs](http://pulsar.apache.org/docs/en/next/functions-develop/#context) here.
   
   As for your issue, the message can get from `FunctionContext.GetCurrentRecord()` (https://github.com/apache/pulsar/blob/master/pulsar-function-go/pf/context.go#L168), which will get `pulsar.Message` (https://github.com/apache/pulsar-client-go/blob/master/pulsar/message.go#L66) to access exposed message metadata like id, the key, the event time, etc.
   
   Also, here is an example function (https://github.com/apache/pulsar/blob/master/pulsar-function-go/examples/contextFunc/contextFunc.go) might be helpful as well.


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