Add Release as default tag to Sentry Metrics

[daniel-johns-99]

The Sentry Metrics added on #3590 are good, however it would be helpful for React Native by default to include the Release as a tag. Even if this is a plugin it would mean being able to leverage the same method Sentry uses to fetch the Release information.

[krystofwoldrich]

Hi @daniel-johns-99,
thank you for the suggestion, we will discuss this internally and keep you posted in here.

For completeness here is a code snipped ho tags can be added at the moment:

Sentry.metrics.increment("button_click", 1, {
  tags: { browser: "Firefox", app_version: "1.0.0" },
});

https://docs.sentry.io/platforms/react-native/metrics/

[krystofwoldrich]

@daniel-johns-99 Are you currently adding the release tag manually?

[daniel-johns-99]

Hi @krystofwoldrich, yes we've had to create a auxilliary method to add the release as a tag. I think it would make sense for it to be there by default, given the release tag is a first class tag in quiet a few other parts of Sentry.

I released I commented on the wrong issue, but would you consider adding in a beforeEmit event as the SDK impl suggests where the release can be added into all metrics as a tag
https://develop.sentry.dev/sdk/metrics/#hooks

[krystofwoldrich]

@daniel-johns-99 Thank you for the reply, I can confirm adding the release tag by default, but we are going to add the beforeEmit hook which will make this much easier.