From 112115813a29d92a2d19ebe601a209afb9d1b82b Mon Sep 17 00:00:00 2001
From: "Mr. E23" <e23@users.mediawiki.org>
Date: Sun, 25 Jan 2004 00:53:07 +0000
Subject: [PATCH] Added use of a FakeMemCachedClient in case memcached isn't
 working for some reason. Adds some speed as well as avoids a php segfault on
 certain setups when memcached is enabled but not available.

---
 includes/Setup.php | 28 +++++++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/includes/Setup.php b/includes/Setup.php
index 26f4dc31e3..93bd46cded 100644
--- a/includes/Setup.php
+++ b/includes/Setup.php
@@ -52,8 +52,31 @@ class MemCachedClientforWiki extends memcached {
 	}
 }
 
-$wgMemc = new MemCachedClientforWiki( array('persistant' => true) );
+# FakeMemCachedClient imitates the API of memcached-client v. 0.1.2.
+# It acts as a memcached server with no RAM, that is, all objects are
+# cleared the moment they are set. All set operations succeed and all
+# get operations return null.
+
+class FakeMemCachedClient {
+	function add ($key, $val, $exp = 0) { return true; }
+	function decr ($key, $amt=1) { return null; }
+	function delete ($key, $time = 0) { return false; }
+	function disconnect_all () { }
+	function enable_compress ($enable) { }
+	function forget_dead_hosts () { }
+	function get ($key) { return null; }
+	function get_multi ($keys) { return array_pad(array(), count($keys), null); }
+	function incr ($key, $amt=1) { return null; }
+	function replace ($key, $value, $exp=0) { return false; }
+	function run_command ($sock, $cmd) { return null; }
+	function set ($key, $value, $exp=0){ return true; }
+	function set_compress_threshold ($thresh){ }
+	function set_debug ($dbg) { }
+	function set_servers ($list) { }
+}
+
 if( $wgUseMemCached ) {
+	$wgMemc = new MemCachedClientforWiki( array('persistant' => true) );
 	$wgMemc->set_servers( $wgMemCachedServers );
 	$wgMemc->set_debug( $wgMemCachedDebug );
 
@@ -62,7 +85,10 @@ if( $wgUseMemCached ) {
 	if ( !$wgMemc->set( "test", "", 0 ) ) {
 		wfDebug( "Memcached failed setup test - connection error?\n" );
 		$wgUseMemCached = false;
+		$wgMemc = new FakeMemCachedClient();
 	}
+} else {
+	$wgMemc = new FakeMemCachedClient();
 }
 
 wfProfileOut( "$fname-memcached" );
-- 
2.20.1