apphost.release.rollback

Roll a hosted site back to a previously published release: verify the immutable S3 prefix is still servable, repoint active_release_uuid, and flip the CloudFront KVS routing entry.

Roll a hosted site back to a previously published release.

Inputs:

• site_uuid: the HostedSite (required)
• release_uuid: target HostedRelease; default = most recent published release older than the active one

Outputs: site_uuid, release_uuid, url, rolled_back_from_release_uuid

Overview

Property	Value
Workflow type	Atomic
Library	App-apphost
Version	1.0

Input Schema

Field	Type	Required	Default	Description
site_uuid	uuid	Yes	—	HostedSite UUID.
release_uuid	uuid	No	—	Target HostedRelease UUID. Default: the most recent published release older than the currently active one.

Output Schema

Field	Type	Required	Default	Description
site_uuid	uuid	No	—	HostedSite UUID.
release_uuid	uuid	No	—	Release now being served.
url	string	No	—	Public serving URL for the site.
rolled_back_from_release_uuid	uuid	No	—	Release that was active before the rollback (if any).
failure_reason	string	No	—	—
failure_type	string	No	—	—
failed_action	string	No	—	—
failed_at_state	string	No	—	—
failed_step	json	No	—	—
failed_layer	json	No	—	—
reason	string	No	—	—
error	string	No	—	—
error_type	string	No	—	—

States

State	Initial	Terminal	Success	Auto-advance	Description
pending	Yes	No	—	execute	Rollback request accepted; will validate and repoint
completed	No	Yes	Yes	—	Site repointed; KVS routing flipped to the target release prefix
failed	No	Yes	No	—	Rollback rejected or an AWS call failed; nothing committed

State Diagram

Transitions

From	Action	To	Description
pending	execute	completed	Validate target release, repoint active_release_uuid, flip KVS routing
* (any state)	fail	failed	Rollback moves to failed

Outcomes

Outcome	Type	Description	State Data Keys
rolled_back	SUCCESS	Site repointed to a previously published release	site_uuid, release_uuid, url
failed	FAILURE	Apphost workflow failed	failure_reason

API Usage

POST /api/workflows/start
Content-Type: application/json

{
  "workflow_type": "apphost.release.rollback",
  "initial_data": {
    "site_uuid": "value"
  }
}