0.5 Running " /> 0.5 Running " /> 0.5 Running "/>

Transform PromQL Expressions on the fly

promql-transform

Transforms PromQL expressions on the fly

Usage

Given the expression

job:request_latency_seconds:mean5m{job=\"myjob\"} > 0.5

Running

$ ./promql-transform \
    --label-matcher juju_model=lma \
    --label-matcher juju_model_uuid=12345 \
    --label-matcher juju_application=proxy \
    --label-matcher juju_unit=proxy/1 \
    "job:request_latency_seconds:mean5m{job=\"myjob\"} > 0.5"

Would output

job:request_latency_seconds:mean5m{job="myjob",juju_application="proxy",juju_model="lma",juju_model_uuid="12345",juju_unit="proxy/1"} > 0.5
Owner
Canonical
Canonical
https://github.com/canonical/promql-transform
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Comments
  • Update vendored deps so we get the most recent prometheus functions

    Update vendored deps so we get the most recent prometheus functions

    Issue

    promql-transform cannot currently recognize last_over_time() and probably some other functions.

    Solution

    Update the vendored deps.

    Release Notes

    Update to the latest version of github.com/prometheus/prometheus/promql

  • Use a matrix to check and push to multiple charms

    Use a matrix to check and push to multiple charms

    Issue

    Expand the github workflows so they automatically publish resources to any charm which needs it.

    Solution

    Use a matrix in the workflow instead of hardcoding prometheus only

    Release Notes

    Automatically publish resources to more charms than just prometheus

  • Fix linebreak and matcher bugs

    Fix linebreak and matcher bugs

    resolves #1 resolves #2

    Issue

    promql-transform currently is able to create expressions that are unable to match anything. it also outputs an unnecessary trailing line break that makes the output YAML look uglier than needed.

    Solution

    Check for existing label matchers and skip if there is a collision.

    Context

    N/A

    Testing Instructions

    • Run promql-transform with a label matcher already present in the expression and make sure it's not added.
    • Mix present and new label matchers and make sure the new ones are added
    • Verify there is no line break at the end of the output.

    Release Notes

    • Fixes an issue where adding label matchers already present would result in two matchers for the same name, making the expression not match anything.
    • Fixes an issue where mutated expressions would get an unnecessary trailing line break.
  • Publish new amd64 and arm64 revisions on merge to main

    Publish new amd64 and arm64 revisions on merge to main

    Issue

    Automate releases of promql-transform on merges to main, including the upload of new resource revisions to CharmHub for the prometheus-k8s charm.

    Solution

    On merges to main:

    1. Create a new tag, based on the latest CharmHub revision number, incremented by one
    2. Create a new GitHub release with, as artefacts, both the amd64 and arm64 binaries
    3. Publishes the amd64 and arm64 binaries as new revisions in CharmHub for the promql-transform-{amd|arm}64 resources for the prometheus-k8s charm

    This new build process needs a CHARMHUB_TOKEN secret set as a repository secret with the output of charmcraft login --export.

    Context

    • Goreleaser needs SemVer in tags, so we could not use it (I wanted to keep the tagging semantic in line with CharmHub revisions for clarity).

    Testing Instructions

    For the repo. Let the build run without a CHARMHUB_TOKEN. Check the created git tag, GitHub release and binaries, which are attached as build artefacts.

    Release Notes

    • Automated the release process
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