mirror of
https://github.com/coder/coder.git
synced 2026-06-03 04:58:23 +00:00
Yevhenii Shcherbina
0f6ca55238
Closes https://github.com/coder/internal/issues/312 Depends on https://github.com/coder/terraform-provider-coder/pull/408 This PR adds support for defining an **autoscaling block** for prebuilds, allowing number of desired instances to scale dynamically based on a schedule. Example usage: ``` data "coder_workspace_preset" "us-nix" { ... prebuilds = { instances = 0 # default to 0 instances scheduling = { timezone = "UTC" # a single timezone is used for simplicity # Scale to 3 instances during the work week schedule { cron = "* 8-18 * * 1-5" # from 8AM–6:59PM, Mon–Fri, UTC instances = 3 # scale to 3 instances } # Scale to 1 instance on Saturdays for urgent support queries schedule { cron = "* 8-14 * * 6" # from 8AM–2:59PM, Sat, UTC instances = 1 # scale to 1 instance } } } } ``` ### Behavior - Multiple `schedule` blocks per `prebuilds` block are supported. - If the current time matches any defined autoscaling schedule, the corresponding number of instances is used. - If no schedule matches, the **default instance count** (`prebuilds.instances`) is used as a fallback. ### Why This feature allows prebuild instance capacity to adapt to predictable usage patterns, such as: - Scaling up during business hours or high-demand periods - Reducing capacity during off-hours to save resources ### Cron specification The cron specification is interpreted as a **continuous time range.** For example, the expression: ``` * 9-18 * * 1-5 ``` is intended to represent a continuous range from **09:00 to 18:59**, Monday through Friday. However, due to minor implementation imprecision, it is currently interpreted as a range from **08:59:00 to 18:58:59**, Monday through Friday. This slight discrepancy arises because the evaluation is based on whether a specific **point in time** falls within the range, using the `github.com/coder/coder/v2/coderd/schedule/cron` library, which performs per-minute matching rather than strict range evaluation. --------- Co-authored-by: Danny Kopping <danny@coder.com>
100 lines
2.4 KiB
SQL
100 lines
2.4 KiB
SQL
-- name: InsertPreset :one
|
|
INSERT INTO template_version_presets (
|
|
id,
|
|
template_version_id,
|
|
name,
|
|
created_at,
|
|
desired_instances,
|
|
invalidate_after_secs,
|
|
scheduling_timezone
|
|
)
|
|
VALUES (
|
|
@id,
|
|
@template_version_id,
|
|
@name,
|
|
@created_at,
|
|
@desired_instances,
|
|
@invalidate_after_secs,
|
|
@scheduling_timezone
|
|
) RETURNING *;
|
|
|
|
-- name: InsertPresetParameters :many
|
|
INSERT INTO
|
|
template_version_preset_parameters (template_version_preset_id, name, value)
|
|
SELECT
|
|
@template_version_preset_id,
|
|
unnest(@names :: TEXT[]),
|
|
unnest(@values :: TEXT[])
|
|
RETURNING *;
|
|
|
|
-- name: InsertPresetPrebuildSchedule :one
|
|
INSERT INTO template_version_preset_prebuild_schedules (
|
|
preset_id,
|
|
cron_expression,
|
|
desired_instances
|
|
)
|
|
VALUES (
|
|
@preset_id,
|
|
@cron_expression,
|
|
@desired_instances
|
|
) RETURNING *;
|
|
|
|
-- name: UpdatePresetPrebuildStatus :exec
|
|
UPDATE template_version_presets
|
|
SET prebuild_status = @status
|
|
WHERE id = @preset_id;
|
|
|
|
-- name: GetPresetsByTemplateVersionID :many
|
|
SELECT
|
|
*
|
|
FROM
|
|
template_version_presets
|
|
WHERE
|
|
template_version_id = @template_version_id;
|
|
|
|
-- name: GetPresetByWorkspaceBuildID :one
|
|
SELECT
|
|
template_version_presets.*
|
|
FROM
|
|
template_version_presets
|
|
INNER JOIN workspace_builds ON workspace_builds.template_version_preset_id = template_version_presets.id
|
|
WHERE
|
|
workspace_builds.id = @workspace_build_id;
|
|
|
|
-- name: GetPresetParametersByTemplateVersionID :many
|
|
SELECT
|
|
template_version_preset_parameters.*
|
|
FROM
|
|
template_version_preset_parameters
|
|
INNER JOIN template_version_presets ON template_version_preset_parameters.template_version_preset_id = template_version_presets.id
|
|
WHERE
|
|
template_version_presets.template_version_id = @template_version_id;
|
|
|
|
-- name: GetPresetParametersByPresetID :many
|
|
SELECT
|
|
tvpp.*
|
|
FROM
|
|
template_version_preset_parameters tvpp
|
|
WHERE
|
|
tvpp.template_version_preset_id = @preset_id;
|
|
|
|
-- name: GetPresetByID :one
|
|
SELECT tvp.*, tv.template_id, tv.organization_id FROM
|
|
template_version_presets tvp
|
|
INNER JOIN template_versions tv ON tvp.template_version_id = tv.id
|
|
WHERE tvp.id = @preset_id;
|
|
|
|
-- name: GetActivePresetPrebuildSchedules :many
|
|
SELECT
|
|
tvpps.*
|
|
FROM
|
|
template_version_preset_prebuild_schedules tvpps
|
|
INNER JOIN template_version_presets tvp ON tvp.id = tvpps.preset_id
|
|
INNER JOIN template_versions tv ON tv.id = tvp.template_version_id
|
|
INNER JOIN templates t ON t.id = tv.template_id
|
|
WHERE
|
|
-- Template version is active, and template is not deleted or deprecated
|
|
tv.id = t.active_version_id
|
|
AND NOT t.deleted
|
|
AND t.deprecated = '';
|