ENGINEERING
Bumped-Package Downstream Service Tracer (Honeycomb)
Maps a GitLab dependency-bump MR to the runtime services that exercise the changed package by querying Honeycomb for spans tagged with the affected modules.
How it runs
The automated pipeline, trigger to output.
- TriggerGitLab bump MR opened webhookGitLab
- LogicMap package to importing modules/handlers
- ActionQuery Honeycomb for spans hitting those modulesHoneycomb
- LogicRank affected services by traffic
- OutputPost downstream-service map as MR noteGitLab
What it does
Static call-site analysis tells you which files import a package; it doesn't tell you which *running services* hit that code in production. This workflow takes a GitLab bump MR, resolves the call sites of the changed package, then queries Honeycomb over the last 7 days for traces whose spans touch those code paths. The result is a list of live services and endpoints that exercise the bump, ranked by request volume.
When to use it
Use it in a polyrepo or modular monolith where one bump can ripple into several deployed services and a stale review misses the one that matters. Best when you instrument spans with module or handler names.
How it works
- 1A GitLab MR webhook fires for branches matching `renovate/*` or `dependabot/*`.
- 2A logic step extracts the bumped package and maps it to the modules and handlers that import it.
- 3A Honeycomb action queries traces over the recent window for spans matching those modules, grouped by service and route.
- 4A logic step ranks services by traffic and flags any on a critical path.
- 5The workflow posts the downstream-service map as an MR note in GitLab.
Set it up
What you configure once, before turning it on.
- 1Connect GitLabRepos, MRs, pipelines, registry.
- 2Connect HoneycombDistributed traces and queries.
- 3Set each agent's modelWe leave models unset so you pick the tier — fast + cheap, or top-quality.
- 4Tune it to your dataEdit the prompts, filters, and field mappings so it matches how your team works.
- 5Test, then turn it onRun once against a sample, confirm the output, then enable the trigger.
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