# HG changeset patch
# User Marcin Kuzminski <marcin@rhodecode.com>
# Date 2019-02-08 15:08:03
# Node ID 24601e964c0f2f6aee5452c5c58dd60d370ddedb
# Parent  e151f23172e5e0d6987c3de5119072c4a91135db

redis: add logging about lock acquire, this should help in case of locked row debugging

diff --git a/rhodecode/lib/rc_cache/backends.py b/rhodecode/lib/rc_cache/backends.py
--- a/rhodecode/lib/rc_cache/backends.py
+++ b/rhodecode/lib/rc_cache/backends.py
@@ -203,3 +203,12 @@ class RedisPickleBackend(Serializer, red
             for key, value in mapping.items():
                 pipe.setex(key, self.redis_expiration_time, value)
             pipe.execute()
+
+    def get_mutex(self, key):
+        u = redis_backend.u
+        if self.distributed_lock:
+            lock_key = u('_lock_{0}').format(key)
+            log.debug('Trying to acquire Redis lock for key %s', lock_key)
+            return self.client.lock(lock_key, self.lock_timeout, self.lock_sleep)
+        else:
+            return None