receiver/kafkareceiver - Allow user to read from latest or smallest offset

[MacNale]

Is your feature request related to a problem? Please describe.

I cant specify kafka offset to configure receiver/kafkareceiver to start reading from.

Describe the solution you'd like

support config as follows -

offset: smallest | latest

Describe alternatives you've considered

No response

Additional context

No response

[github-actions]

Pinging code owners: @pavolloffay @MovieStoreGuy. See Adding Labels via Comments if you do not have permissions to add labels yourself.

[MovieStoreGuy]

Hey @MacNale ,

Could you give us a scenario where this would be valuable?

[MacNale]

This is for testing. Having such offset makes my integration testing easy.

[github-actions]

This issue has been inactive for 60 days. It will be closed in 60 days if there is no activity. To ping code owners by adding a component label, see Adding Labels via Comments, or if you are unsure of which component this issue relates to, please ping @open-telemetry/collector-contrib-triagers. If this issue is still relevant, please ping the code owners or leave a comment explaining why it is still relevant. Otherwise, please close it.

Pinging code owners:

• receiver/kafka: @pavolloffay @MovieStoreGuy

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[ueisele]

Hello,

I also need this feature to submit metrics already published to Kafka to an additional sink.
In principle, it would of course also be possible to create a consumer group in advance and set the offset. However, a way to configure this would make this much easier.
Since this only required a few lines of code, I implemented this and created the PR #21408.

[github-actions]

This issue has been inactive for 60 days. It will be closed in 60 days if there is no activity. To ping code owners by adding a component label, see Adding Labels via Comments, or if you are unsure of which component this issue relates to, please ping @open-telemetry/collector-contrib-triagers. If this issue is still relevant, please ping the code owners or leave a comment explaining why it is still relevant. Otherwise, please close it.

Pinging code owners:

• receiver/kafka: @pavolloffay @MovieStoreGuy

See Adding Labels via Comments if you do not have permissions to add labels yourself.