From 01e5fd7e7ca4a13371c9faf10a24cf34ec90019c Mon Sep 17 00:00:00 2001
From: Rodolphe Quiedeville <unknown@munin-monitoring.org>
Date: Wed, 17 Jan 2007 10:23:31 +0100
Subject: [PATCH] Initial version

---
 plugins/other/mysql_qcache_mem | 129 +++++++++++++++++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100755 plugins/other/mysql_qcache_mem

diff --git a/plugins/other/mysql_qcache_mem b/plugins/other/mysql_qcache_mem
new file mode 100755
index 00000000..0fe06c31
--- /dev/null
+++ b/plugins/other/mysql_qcache_mem
@@ -0,0 +1,129 @@
+#!/usr/bin/perl
+#
+# Copyright (C) 2006 - Rodolphe Quiedeville <rodolphe@quiedeville.org>
+# Copyright (C) 2003-2004 - Andreas Buer
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; version 2 dated June,
+# 1991.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+# $Log$
+# Revision 1.0  2006/04/28 09:04:01  rodo
+# Add lower limit fixed to 0
+#
+# Revision 1.0  2006/04/26 16:04:01  rodo
+# Created by Rodolphe Quiedeville
+#
+# Parameters:
+#
+#   config
+#   autoconf
+#
+# Configuration variables
+#
+#   mysqlopts     - Options to pass to mysql
+#   mysqladmin    - Override location of mysqladmin
+#
+#%# family=auto
+#%# capabilities=autoconf
+
+use strict;
+
+my $MYSQLADMIN = $ENV{mysqladmin} || "mysqladmin";
+my $COMMAND    = "$MYSQLADMIN $ENV{mysqlopts} extended-status";
+my $COMMANDSIZE = "$MYSQLADMIN $ENV{mysqlopts} variables";
+
+my %WANTED = ( "Qcache_free_memory" => "free" );
+
+my $arg = shift();
+
+if ($arg eq 'config') {
+    print_config();
+    exit();
+} elsif ($arg eq 'autoconf') {
+    unless (test_service() ) {
+        print "yes\n";
+    } else {
+        print "no\n";
+    }
+    exit;
+}
+
+my ($free, $used) = (0,0);
+
+open(SERVICE, "$COMMAND |")
+  or die("Coult not execute '$COMMAND': $!");
+
+while (<SERVICE>) {
+    my ($k, $v) = (m/(\w+).*?(\d+(?:\.\d+)?)/);
+    next unless ($k);
+    if (exists $WANTED{$k} ) {
+	$free = $v;
+	print("$WANTED{$k}.value $v\n");
+    }
+}
+close(SERVICE);
+
+open(SERVICE, "$COMMANDSIZE |")
+  or die("Coult not execute '$COMMANDSIZE': $!");
+
+while (<SERVICE>) {
+    my ($k, $v) = (m/(\w+).*?(\d+(?:\.\d+)?)/);
+
+    next unless ($k);
+    if ($k eq "query_cache_size" ) {
+	print("used.value ",($v-$free),"\n");
+    }
+}
+close(SERVICE);
+
+sub print_config {
+
+    print('graph_title MySQL Queries Cache Size
+graph_args --base 1024 -l 0
+graph_vlabel bytes
+graph_category mysql
+graph_order used free
+graph_total Total
+graph_info Plugin available at <a href="http://rodolphe.quiedeville.org/hack/munin/">http://rodolphe.quiedeville.org/hack/munin/</a>
+used.label Used
+used.draw AREA
+free.label Free
+free.draw STACK
+');
+}
+
+sub test_service {
+
+    my $return = 1;
+
+    system ("$MYSQLADMIN --version >/dev/null 2>/dev/null");
+    if ($? == 0)
+    {
+	system ("$COMMAND >/dev/null 2>/dev/null");
+	if ($? == 0)
+	{
+	    print "yes\n";
+	    $return = 0;
+	}
+	else
+	{
+	    print "no (could not connect to mysql)\n";
+	}
+    }
+    else
+    {
+	print "no (mysqladmin not found)\n";
+    }
+    exit $return;
+}