sentry chore(integrations): integration installation metrics

Adds overall integration installation metrics. This will compare how many times people initiate installing an integration vs how many times they actually complete the installation.

The pipeline is initialized https://github.com/getsentry/sentry/blob/920ca20d7419a66324a85d30195e6f9a2dd573cb/src/sentry/integrations/web/organization_integration_setup.py#L54

And finish_pipeline is the last step https://github.com/getsentry/sentry/blob/920ca20d7419a66324a85d30195e6f9a2dd573cb/src/sentry/pipeline/base.py#L179-L180

It would be useful to capture more granular metrics (but perhaps not report them as SLOs) for steps in the installation pipeline for each integration where errors can arise.

Oct 03 '24 21:10 cathteng

i realize this basically tracks how many times people just click "Add Installation" but we don't have a way of knowing whether they intended to install for real 🤷‍♀️

Oct 03 '24 21:10 cathteng

Is this different from just looking at frontend metrics that we're already logging?

Oct 03 '24 21:10 ameliahsu

@ameliahsu do frontend metrics capture that the installation was actually installed?

Oct 03 '24 21:10 cathteng

@cathteng We log installation start and complete here

Oct 03 '24 21:10 ameliahsu

to follow up, we need to emit these metrics from the backend because the SLO reporting is done through DD

Oct 03 '24 22:10 cathteng