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authorErik Johnston <erik@matrix.org>2017-06-29 14:08:33 +0100
committerErik Johnston <erik@matrix.org>2017-06-29 14:08:37 +0100
commitc72058bcc6688e3ed9fa600f77f5190441107318 (patch)
tree1c7fe67f2f43b2c833f7e8bf46b5b40d120a30bb /synapse/handlers
parentMerge branch 'release-v0.22.0' of github.com:matrix-org/synapse into develop (diff)
downloadsynapse-c72058bcc6688e3ed9fa600f77f5190441107318.tar.xz
Use an ExpiringCache for storing registration sessions
This is because pruning them was a significant performance drain on
matrix.org
Diffstat (limited to 'synapse/handlers')
-rw-r--r--synapse/handlers/auth.py21
1 files changed, 10 insertions, 11 deletions
diff --git a/synapse/handlers/auth.py b/synapse/handlers/auth.py
index e7a1bb7246..b00446bec0 100644
--- a/synapse/handlers/auth.py
+++ b/synapse/handlers/auth.py
@@ -21,6 +21,7 @@ from synapse.api.constants import LoginType
 from synapse.types import UserID
 from synapse.api.errors import AuthError, LoginError, Codes, StoreError, SynapseError
 from synapse.util.async import run_on_reactor
+from synapse.util.caches.expiringcache import ExpiringCache
 
 from twisted.web.client import PartialDownloadError
 
@@ -52,7 +53,15 @@ class AuthHandler(BaseHandler):
             LoginType.DUMMY: self._check_dummy_auth,
         }
         self.bcrypt_rounds = hs.config.bcrypt_rounds
-        self.sessions = {}
+
+        # This is not a cache per se, but a store of all current sessions that
+        # expire after N hours
+        self.sessions = ExpiringCache(
+            cache_name="register_sessions",
+            clock=hs.get_clock(),
+            expiry_ms=self.SESSION_EXPIRE_MS,
+            reset_expiry_on_get=True,
+        )
 
         account_handler = _AccountHandler(
             hs, check_user_exists=self.check_user_exists
@@ -617,16 +626,6 @@ class AuthHandler(BaseHandler):
         logger.debug("Saving session %s", session)
         session["last_used"] = self.hs.get_clock().time_msec()
         self.sessions[session["id"]] = session
-        self._prune_sessions()
-
-    def _prune_sessions(self):
-        for sid, sess in self.sessions.items():
-            last_used = 0
-            if 'last_used' in sess:
-                last_used = sess['last_used']
-            now = self.hs.get_clock().time_msec()
-            if last_used < now - AuthHandler.SESSION_EXPIRE_MS:
-                del self.sessions[sid]
 
     def hash(self, password):
         """Computes a secure hash of password.