From 267b9153a37c725b8fba81cb6fe7a7f614da4d2f Mon Sep 17 00:00:00 2001
From: Andrew Williams <andy@tensixtyone.com>
Date: Tue, 6 Sep 2011 17:37:18 +0100
Subject: [PATCH] Added function to purge stale cache documents

---
 apishiv/cache.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/apishiv/cache.py b/apishiv/cache.py
index 34f29ae..57e19ab 100644
--- a/apishiv/cache.py
+++ b/apishiv/cache.py
@@ -75,3 +75,12 @@ class DbCacheHandler:
             self.disconnect()
         except sqlite3.Error as e:
             self.log.error("Error storing document: %s", e.args[0])
+
+    def purge_stale(self):
+        self.log.info("Purging stale cached documents")
+        try:
+            self.cursor.execute("DELETE FROM api_cache WHERE datetime(cacheduntil, 'unixepoch') >= current_timestamp")
+            self.conn.commit()
+            self.disconnect()
+        except sqlite3.Error as e:
+            self.log.error("Error purging document cache: %s", e.args[0])