Project: Metrics Normalization

[cleptric]

Description

SDKs that support metrics today, already perform normalization on certain parts of a metric.
We updated these rulesets and extended the allowed characters for tag values.
The specification can be found on develop, https://develop.sentry.dev/sdk/metrics/#normalization.

A quick TL;DR: How to Implement

Update or add the replacement regexes for metric units, metric keys and tag keys and check if the correct replacement characters are applied.
Remove the prior replacement regex and implement the replacement map for tag values.

Get inspired by the PHP SDK PR or the Relay PR.

Why should we be doing this?

We want to future-proof our metrics pipeline by allowing us to set certain exceptions about the payloads we receive from the SDKs and be compatible with our new Snuba MQL query dialect.

Why now?

This is a joint effort between SDKs, Ingest and Telemetry. Given the importance of the Metrics product at Sentry and the small scope of this task, we'll prioritize this.
Implementation should be finished by Friday, April 12th.

Stakeholder(s)

@jan-auer @cleptric

Team(s)

Web Backend, Web Frontend, Mobile

Implementation Status

Web Backend SDKs

Beta Give feedback

1. Metrics Normalization sentry-python#2937
   Enhancement +1
   
2. Metrics Normalization sentry-php#1731
   +0
   
3. Metrics Normalization sentry-ruby#2289
   enhancement metrics +2
   
4. Metrics Normalization sentry-dotnet#3261
   Product: Metrics +1
   
5. Unity will be handled by Metrics Normalization sentry-dotnet#3261

Web Frontend SDKs

Beta Give feedback

1. Metrics Normalization sentry-javascript#11433
   Feature: Metrics +1
   

Mobile SDKs

Beta Give feedback

1. Metrics Normalization sentry-java#3323
   Platform: Android Platform: Java enhancement +3
   
2. Android: should get it via Metrics Normalization sentry-java#3323
3. React Native: should get it via Metrics Normalization sentry-javascript#11433
4. Metrics Normalization sentry-dart#1965
   Platform: Dart enhancement +2
5. Metrics Normalization sentry-cocoa#3829
   Platform: Cocoa Platform: iOS Type: Enhancement +3
   

[krystofwoldrich]

RN SDK https://github.com/getsentry/sentry-react-native/releases/tag/5.22.0 includes getsentry/sentry-javascript#11433