allows custom tags to be added to prometheus metrics
Addresses GH issue #4021

Pre-Submission Checklist

Commit message has the format required by CONTRIBUTING guide
Commits are split per component (core, individual modules, libs, utils, ...)
Each component has a single commit (if not, squash them into one commit)
No commits to README files for modules (changes must be done to docbook files
in doc/ subfolder, the README file is autogenerated)

Type Of Change

Small bug fix (non-breaking change which fixes an issue)
New feature (non-breaking change which adds new functionality)
Breaking change (fix or feature that would change existing functionality)

Checklist:

PR should be backported to stable branches
Tested changes locally
Related to issue #4021

Description

This change adds a new parameter xhttp_prom_tags. It allows the user to append tags to the prometheus metrics. This makes those metrics a lot more useful when having multiple kamailio instances running on a single host.

This is done by 2 shared memory helper variables which contain the parameter in different formats. This way it is easy to print them out with minimal changes.

You can view, comment on, or merge this pull request online at:

https://github.com/kamailio/kamailio/pull/4072

Commit Summary

f2585b8 xhttp_prom: new xhttp_prom_tags parameter
a023251 Fixed formating

File Changes

(4 files)

M src/modules/xhttp_prom/doc/xhttp_prom_admin.xml (25)
M src/modules/xhttp_prom/prom.c (30)
M src/modules/xhttp_prom/xhttp_prom.c (50)
M src/modules/xhttp_prom/xhttp_prom.h (15)

Patch Links:

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