sessions: patch baker to take expire time for redis for auto session cleanup.

pkgs/patches/beaker/patch-beaker-improved-redis-2.diff

@@ -0,0 +1,18 @@
+diff -rup Beaker-1.9.1-orig/beaker/session.py Beaker-1.9.1/beaker/session.py
+--- Beaker-1.9.1-orig/beaker/session.py	2020-04-10 10:23:04.000000000 +0200
++++ Beaker-1.9.1/beaker/session.py	2020-04-10 10:23:34.000000000 +0200
+@@ -156,6 +156,14 @@ def __init__(self, request, id=None, invalidate_corrupt=False,
+         if timeout and not save_accessed_time:
+             raise BeakerException("timeout requires save_accessed_time")
+         self.timeout = timeout
++        # We want to pass timeout param to redis backend to support expiration of keys
++        # In future, I believe, we can use this param for memcached and mongo as well
++        if self.timeout is not None and self.type == 'ext:redis':
++            # The backend expiration should always be a bit longer (I decied to use 2 minutes) than the
++            # session expiration itself to prevent the case where the backend data expires while
++            # the session is being read (PR#153)
++            self.namespace_args['timeout'] = self.timeout + 60 * 2
++
+         self.save_atime = save_accessed_time
+         self.use_cookies = use_cookies
+         self.cookie_expires = cookie_expires

pkgs/patches/beaker/patch-beaker-improved-redis.diff

@@ -0,0 +1,26 @@
+diff -rup Beaker-1.9.1-orig/beaker/ext/redisnm.py Beaker-1.9.1/beaker/ext/redisnm.py
+--- Beaker-1.9.1-orig/beaker/ext/redisnm.py	2018-04-10 10:23:04.000000000 +0200
++++ Beaker-1.9.1/beaker/ext/redisnm.py	2018-04-10 10:23:34.000000000 +0200
+@@ -30,9 +30,10 @@ class RedisNamespaceManager(NamespaceManager):
+
+     clients = SyncDict()
+
+-    def __init__(self, namespace, url, **kw):
++    def __init__(self, namespace, url, timeout=None, **kw):
+         super(RedisNamespaceManager, self).__init__(namespace)
+         self.lock_dir = None  # Redis uses redis itself for locking.
++        self.timeout = timeout
+
+         if redis is None:
+             raise RuntimeError('redis is not available')
+@@ -68,6 +69,8 @@ def has_key(self, key):
+
+     def set_value(self, key, value, expiretime=None):
+         value = pickle.dumps(value)
++        if expiretime is None and self.timeout is not None:
++            expiretime = self.timeout
+         if expiretime is not None:
+             self.client.setex(self._format_key(key), int(expiretime), value)
+         else:
+
+

pkgs/python-packages-overrides.nix

@@ -32,6 +32,8 @@ self: super: {
     patches = [
       ./patches/beaker/patch-beaker-lock-func-debug.diff
       ./patches/beaker/patch-beaker-metadata-reuse.diff
+      ./patches/beaker/patch-beaker-improved-redis.diff
+      ./patches/beaker/patch-beaker-improved-redis-2.diff
     ];
   });