Fix: Attempt at improving worker actions query

[mrkaye97]

Description

Lots of slow traces, which I think are happening because we're pulling a ton of rows down out of the db. I figured we could hash the action names and store them with the worker, and then try to only look up actions for each hash once, and then map them back to the relevant worker that way, which should cut down the number of rows we need to pull out of the db by a factor of the number of replicas of a worker any given tenant has

Unfortunately we can't make the action hash non-null and backfill so we need to also have a lookup by worker id for backwards compat for now

Type of change

• Bug fix (non-breaking change which fixes an issue)

[vercel]

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Project	Deployment	Actions	Updated (UTC)
hatchet-docs	Ready	Preview, Comment	May 7, 2026 8:59pm

[mrkaye97]

goal here is we'll just move to this completely in a little bit, once all the workers have hashes

[Copilot]

Pull request overview

This PR aims to reduce slow traces in the worker actions lookup path by adding an actionHash to workers and using it to de-duplicate action lookups across identical worker replicas, falling back to worker-id lookups for backward compatibility.

Changes:

• Add Worker.actionHash (BYTEA) plus a (tenantId, actionHash) index (schema + migrations).
• Introduce a new repository method to fetch worker actions using action-hash de-duplication with worker-id fallback.
• Update worker list/get handlers to call the new repository API and pass full worker rows.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
sql/schema/v0.sql	Adds actionHash column and a (tenantId, actionHash) index to the baseline schema.
cmd/hatchet-migrate/migrate/migrations/20260428204451_v1_0_103.sql	Adds the actionHash column for existing installations.
cmd/hatchet-migrate/migrate/migrations/20260428213451_v1_0_104.sql	Adds the (tenantId, actionHash) index concurrently for existing installations.
pkg/repository/worker.go	Implements action-hash-based action lookup and hashes actions on worker creation.
pkg/repository/sqlcv1/workers.sql	Updates worker-actions queries and adds a new query by actionHash.
pkg/repository/sqlcv1/workers.sql.go	Regenerated sqlc output for updated queries/columns.
pkg/repository/sqlcv1/models.go	Adds ActionHash field to the Worker model.
api/v1/server/handlers/workers/list.go	Uses the new worker-actions repository method and passes worker rows.
api/v1/server/handlers/workers/get.go	Uses the new worker-actions repository method for single-worker fetch.