nrzerologplugin: Plugin to support logs in context for Zerolog

[belimawr]

Links

solves #178

Details

This adds a integration to enable logs-in-context for zerolog,
this integrarion is split into two parts:

• HTTP middleware: adds the "LinkingMetadata" into the logger's
  context.
• Zerolog Hook: Adds the caller's information to the logs.

This PR still in a draft stage, but I wanted to share my approach and get some early feedback.
I'm aware the example still needs improvement, like adding all NewRelic initialisation, and documentation needs to be written.

It has already tested it with a demo application and it worked pretty well.

Open questions:

1. How is the file name, line and function names used by NewRelic? Are they required?

Caveats:

• We cannot get the timestamp from zerolog, so we use time.Now.
• Reading the filename and line depend on some internals of zerolog.

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[RichVanderwal]

Thanks for the PR, @belimawr ! We'll be taking a look at it and comparing it to our current strategy for doing Logs in Context.

[RichVanderwal]

Considering this for inclusion in the next release of the Go Agent, with added information from this ticket.

[victoraugustolls]

Hey @RichVanderwal , hope you are doing well! I was looking for zerolog support and found this issue and was wondering if you guys are still taking a look at this! Looking forward to it, thanks in advance.

[rwong2888]

Any traction on this getting merged? I'd like to see zerolog support

[RichVanderwal]

While I can't commit to dates, this feature is on our team's roadmap for consideration and implementation.

[iamemilio]

Hi, please take a look at v3/integrations/logcontext-v2/zerologWriter! This should meet your needs, and if it doesn't let us know!