Added clean_registries(queue) function to clean job registries relate…

…d to that queue.

rq/registry.py

@@ -8,8 +8,9 @@
 
 class BaseRegistry(object):
     """
-    Base implementation of job registry, implemented in Redis sorted set. Each job
-    is stored as a key in the registry, scored by expiration time (unix timestamp).
+    Base implementation of a job registry, implemented in Redis sorted set.
+    Each job is stored as a key in the registry, scored by expiration time
+    (unix timestamp).
     """
 
     def __init__(self, name='default', connection=None):
@@ -134,3 +135,11 @@ def cleanup(self):
         automatically called by `count()` and `get_job_ids()` methods
         implemented in BaseRegistry."""
         pass
+
+
+def clean_registries(queue):
+    """Cleans StartedJobRegistry and FinishedJobRegistry of a queue."""
+    registry = FinishedJobRegistry(name=queue.name, connection=queue.connection)
+    registry.cleanup()
+    registry = StartedJobRegistry(name=queue.name, connection=queue.connection)
+    registry.cleanup()

tests/test_registry.py

@@ -6,8 +6,8 @@
 from rq.queue import FailedQueue, Queue
 from rq.utils import current_timestamp
 from rq.worker import Worker
-from rq.registry import (DeferredJobRegistry, FinishedJobRegistry,
-                         StartedJobRegistry)
+from rq.registry import (clean_registries, DeferredJobRegistry,
+                         FinishedJobRegistry, StartedJobRegistry)
 
 from tests import RQTestCase
 from tests.fixtures import div_by_zero, say_hello
@@ -107,6 +107,21 @@ def test_get_job_count(self):
         self.assertEqual(self.registry.count, 2)
         self.assertEqual(len(self.registry), 2)
 
+    def test_clean_registries(self):
+        """clean_registries() cleans Started and Finished job registries."""
+
+        queue = Queue(connection=self.testconn)
+
+        finished_job_registry = FinishedJobRegistry(connection=self.testconn)
+        self.testconn.zadd(finished_job_registry.key, 1, 'foo')
+
+        started_job_registry = StartedJobRegistry(connection=self.testconn)
+        self.testconn.zadd(started_job_registry.key, 1, 'foo')
+
+        clean_registries(queue)
+        self.assertEqual(self.testconn.zcard(finished_job_registry.key), 0)
+        self.assertEqual(self.testconn.zcard(started_job_registry.key), 0)
+
 
 class TestFinishedJobRegistry(RQTestCase):