bugfix

internal/jobs/queries/jobs.sql

@@ -20,28 +20,31 @@ UPDATE jobs
  )
 RETURNING *;
 
--- name: CompleteJob :exec
+-- name: CompleteJob :execrows
+-- 围栏谓词：只有持有当前租约的 worker 才能写回，防止被 reaper 重新租出后旧 worker 覆盖新一轮状态。
 UPDATE jobs
    SET status='completed', completed_at=now(),
        leased_at=NULL, leased_by=NULL, last_error=NULL,
        updated_at=now()
- WHERE id=$1;
+ WHERE id=$1 AND leased_by=$2 AND status='running';
 
--- name: FailJobWithRetry :exec
+-- name: FailJobWithRetry :execrows
+-- 围栏谓词同上。
 UPDATE jobs
    SET status='pending',
        scheduled_at=$2,
        leased_at=NULL, leased_by=NULL,
        last_error=$3,
        updated_at=now()
- WHERE id=$1;
+ WHERE id=$1 AND leased_by=$4 AND status='running';
 
--- name: DeadLetterJob :exec
+-- name: DeadLetterJob :execrows
+-- 围栏谓词同上。
 UPDATE jobs
    SET status='dead', completed_at=now(),
        leased_at=NULL, leased_by=NULL, last_error=$2,
        updated_at=now()
- WHERE id=$1;
+ WHERE id=$1 AND leased_by=$3 AND status='running';
 
 -- name: GetJob :one
 SELECT * FROM jobs WHERE id=$1;