From 32205b9a7cd09b194b9acbc1f87619420cbd2441 Mon Sep 17 00:00:00 2001
From: ahmedbodi <ahmed_bodi@msn.com>
Date: Thu, 9 Jan 2014 09:50:39 +0000
Subject: [PATCH] MemCache

---
 mining/DBInterface.py | 26 +++++++++++---------------
 1 file changed, 11 insertions(+), 15 deletions(-)

diff --git a/mining/DBInterface.py b/mining/DBInterface.py
index f494713..3bf802d 100644
--- a/mining/DBInterface.py
+++ b/mining/DBInterface.py
@@ -3,6 +3,7 @@ import time
 from datetime import datetime
 import Queue
 import signal
+import Cache
 
 import lib.settings as settings
 
@@ -19,8 +20,7 @@ class DBInterface():
         self.q = Queue.Queue()
         self.queueclock = None
 
-        self.usercache = {}
-        self.clearusercache()
+        self.cache = Cache.Cache()
 
         self.nextStatsUpdate = 0
 
@@ -67,11 +67,6 @@ class DBInterface():
             return DB_None.DB_None()
 	    
 
-    def clearusercache(self):
-        log.debug("DBInterface.clearusercache called")
-        self.usercache = {}
-        self.usercacheclock = reactor.callLater(settings.DB_USERCACHE_TIME , self.clearusercache)
-
     def scheduleImport(self):
         # This schedule's the Import
         if settings.DATABASE_DRIVER == "sqlite":
@@ -163,19 +158,16 @@ class DBInterface():
         # Force username and password to be strings
         username = str(username)
         password = str(password)
-        wid = username + ":-:" + password
-
-        if wid in self.usercache:
+        if not settings.USERS_CHECK_PASSWORD and self.user_exists(username): 
             return True
-        elif not settings.USERS_CHECK_PASSWORD and self.user_exists(username): 
-            self.usercache[wid] = 1
+        elif self.cache.get(username) == password:
             return True
         elif self.dbi.check_password(username, password):
-            self.usercache[wid] = 1
+            self.cache.set(username, password)
             return True
         elif settings.USERS_AUTOADD == True:
             self.insert_user(username, password)
-            self.usercache[wid] = 1
+            self.cache.set(username, password)
             return True
         
         log.info("Authentication for %s failed" % username)
@@ -188,6 +180,8 @@ class DBInterface():
         return self.dbi.get_user(id)
 
     def user_exists(self, username):
+    	if self.cache.get(username) is not None:
+             return True
         user = self.dbi.get_user(username)
         return user is not None 
 
@@ -195,11 +189,13 @@ class DBInterface():
         return self.dbi.insert_user(username, password)
 
     def delete_user(self, username):
+    	self.mc.delete(username)
         self.usercache = {}
         return self.dbi.delete_user(username)
         
     def update_user(self, username, password):
-        self.usercache = {}
+        self.mc.delete(username)
+        self.mc.set(username, password)
         return self.dbi.update_user(username, password)
 
     def update_worker_diff(self, username, diff):