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feat(coderd): return 409 Conflict for non-active task states (#21887)

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Previously we returned 400 Bad Request for all non-active states. This
was semantically incorrect for transitional and paused states where the
request is valid but conflicts with current state.

We now return 409 Conflict for pending/initializing/paused (resolvable
by waiting or resuming) and 400 for error/unknown (actual problems).
This enables client-side auto-resume orchestration per the task
lifecycle RFC.

Closes coder/internal#1265
This commit is contained in:
Mathias Fredriksson
2026-02-06 12:04:58 +02:00
committed by GitHub
parent c60c373bc9
commit 2549fc71fa
2 changed files with 178 additions and 66 deletions
Download Patch File Download Diff File Expand all files Collapse all files
coderd/aitasks.go
+21 -4
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@@ -977,10 +977,27 @@ func (api *API) authAndDoWithTaskAppClient(
ctx := r.Context()
if task.Status != database.TaskStatusActive {
return httperror.NewResponseError(http.StatusBadRequest, codersdk.Response{
Message: "Task status must be active.",
Detail: fmt.Sprintf("Task status is %q, it must be %q to interact with the task.", task.Status, codersdk.TaskStatusActive),
})
// Return 409 Conflict for valid requests blocked by current state
// (pending/initializing are transitional, paused requires resume).
// Return 400 Bad Request for error/unknown states.
switch task.Status {
case database.TaskStatusPending, database.TaskStatusInitializing:
return httperror.NewResponseError(http.StatusConflict, codersdk.Response{
Message: fmt.Sprintf("Task is %s.", task.Status),
Detail: "The task is resuming. Wait for the task to become active before sending messages.",
})
case database.TaskStatusPaused:
return httperror.NewResponseError(http.StatusConflict, codersdk.Response{
Message: "Task is paused.",
Detail: "Resume the task to send messages.",
})
default:
// Default handler for error and unknown status.
return httperror.NewResponseError(http.StatusBadRequest, codersdk.Response{
Message: "Task must be active.",
Detail: fmt.Sprintf("Task status is %q, it must be %q to interact with the task.", task.Status, codersdk.TaskStatusActive),
})
}
}
if !task.WorkspaceID.Valid {
return httperror.NewResponseError(http.StatusBadRequest, codersdk.Response{