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Implement strict prebuilds eligibility

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See https://github.com/coder/internal/issues/372

Signed-off-by: Danny Kopping <danny@coder.com>
This commit is contained in:
Danny Kopping
2025-02-18 09:39:04 +00:00
parent e9fdd86c45
commit 9dd9fedc12
6 changed files with 159 additions and 75 deletions
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6
coderd/database/queries/prebuilds.sql
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@ -6,6 +6,9 @@ WITH
tvp_curr.id AS current_preset_id,
tvp_desired.id AS desired_preset_id,
COUNT(*) AS count,
SUM(CASE
WHEN p.lifecycle_state = 'ready'::workspace_agent_lifecycle_state THEN 1
ELSE 0 END) AS eligible,
STRING_AGG(p.id::text, ',') AS ids
FROM workspace_prebuilds p
INNER JOIN workspace_latest_build b ON b.workspace_id = p.id
@ -56,6 +59,8 @@ SELECT t.template_id,
ELSE '' END)::text AS running_prebuild_ids,
COALESCE(MAX(CASE WHEN t.using_active_version THEN p.count ELSE 0 END),
0)::int AS actual, -- running prebuilds for active version
COALESCE(MAX(CASE WHEN t.using_active_version THEN p.eligible ELSE 0 END),
0)::int AS eligible, -- prebuilds which can be claimed
MAX(CASE WHEN t.using_active_version THEN t.desired_instances ELSE 0 END)::int AS desired, -- we only care about the active version's desired instances
COALESCE(MAX(CASE
WHEN p.template_version_id = t.template_version_id AND
@ -106,6 +111,7 @@ WHERE w.id IN (SELECT p.id
AND pj.job_status IN ('succeeded'::provisioner_job_status))
AND b.template_version_id = t.active_version_id
AND b.template_version_preset_id = @preset_id::uuid
AND p.lifecycle_state = 'ready'::workspace_agent_lifecycle_state
ORDER BY random()
LIMIT 1 FOR UPDATE OF p SKIP LOCKED)
RETURNING w.id, w.name;