feat(client): Add support for tags

[ryanrishi]

This change adds support for tagging metrics. This is helpful when there are multiple instances of the service running in the cloud, eg. for tagging based on availability zone, region, version, etc.

Tags are not part of the StatsD protocol, but are generally accepted by StatsD servers in the following form: <metric>|#key1:value1,key2,value2. For further examples, see Datadog's DogStatsD protocol and NewRelic's metric format.

⚙️ Types of changes

What types of changes does your code introduce? Put an x in the boxes that apply

• New feature (non-breaking change which adds functionality)
• Bugfix (non-breaking change which fixes an issue)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)
• Refactor

[ryanrishi]

@simonecorsi are you able to take a look at this?

[simonecorsi]

@simonecorsi are you able to take a look at this?

@ryanrishi Thank you for tagging me, I didn't see the notification the first time, we've been a bit busy :) Let me do some quick checks with the team and we'll get back to this!

[antoniomuso]

LGTM. Only one particular performance tip.

[dnlup]

Great work @ryanrishi , thank you!

[antoniomuso]

LGTM, could you rewrite the commits using Conventional Commit?

[ryanrishi]

@antoniomuso thanks, rewrote the commits to conform to conventional commit

[simonecorsi]

🎉 This PR is included in version 5.1.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[ryanrishi]

Thanks @simonecorsi ! To get this in https://github.com/immobiliare/fastify-metrics, will dependabot open that PR automatically or should I open a PR to bump the version there?

[ryanrishi]

Thanks @simonecorsi ! To get this in https://github.com/immobiliare/fastify-metrics, will dependabot open that PR automatically or should I open a PR to bump the version there?

Created immobiliare/fastify-metrics#613