Simplify FailedQueue.quarantine and ensure that a deferred job's stat…

…us is set to Queued when enqueued.

rq/queue.py

@@ -248,24 +248,25 @@ def enqueue(self, f, *args, **kwargs):
                                  description=description, depends_on=depends_on,
                                  job_id=job_id, at_front=at_front)
 
-    def enqueue_job(self, job, set_meta_data=True, at_front=False):
+    def enqueue_job(self, job, at_front=False):
         """Enqueues a job for delayed execution.
 
-        If the `set_meta_data` argument is `True` (default), it will update
-        the properties `origin` and `enqueued_at`.
-
         If Queue is instantiated with async=False, job is executed immediately.
         """
-        # Add Queue key set
-        self.connection.sadd(self.redis_queues_keys, self.key)
+
+        with self.connection._pipeline() as pipeline:
+            # Add Queue key set
+            self.connection.sadd(self.redis_queues_keys, self.key)
+            job.set_status(JobStatus.QUEUED, pipeline=pipeline)
 
-        if set_meta_data:
             job.origin = self.name
             job.enqueued_at = utcnow()
 
-        if job.timeout is None:
-            job.timeout = self.DEFAULT_TIMEOUT
-        job.save()
+            if job.timeout is None:
+                job.timeout = self.DEFAULT_TIMEOUT
+            job.save(pipeline=pipeline)
+
+            pipeline.execute()
 
         if self._async:
             self.push_job_id(job.id, at_front=at_front)
@@ -401,14 +402,20 @@ def __init__(self, connection=None):
     def quarantine(self, job, exc_info):
         """Puts the given Job in quarantine (i.e. put it on the failed
         queue).
-
-        This is different from normal job enqueueing, since certain meta data
-        must not be overridden (e.g. `origin` or `enqueued_at`) and other meta
-        data must be inserted (`ended_at` and `exc_info`).
         """
-        job.ended_at = utcnow()
-        job.exc_info = exc_info
-        return self.enqueue_job(job, set_meta_data=False)
+
+        with self.connection._pipeline() as pipeline:
+            # Add Queue key set
+            self.connection.sadd(self.redis_queues_keys, self.key)
+
+            job.ended_at = utcnow()
+            job.exc_info = exc_info
+            job.save(pipeline=pipeline)
+
+            self.push_job_id(job.id, pipeline=pipeline)
+            pipeline.execute()
+
+        return job
 
     def requeue(self, job_id):
         """Requeues the job with the given job ID."""