From 8e33e9a8eeb7823ca409563a1f3b23716f4b5482 Mon Sep 17 00:00:00 2001
From: Florent EppO Monbillard <eppo@darox.net>
Date: Wed, 14 Feb 2007 12:25:22 +0100
Subject: [PATCH] apache plugin: Support for lighttpd's `BusyServers' field was
 added.

---
 ChangeLog    |  3 +++
 src/apache.c | 21 +++++++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index ef413585..66c1fc1d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,6 @@
+	* apache plugin: Support for lighttpd's `BusyServers' (aka.
+	connections) field was added by Florent Monbillard.
+
 2007-02-11, Version 3.11.2
 	* plugin: Catch NULL-pointer and try to fix them. Otherwise the
 	  NULL-pointer may have been passed to `printf' which causes a
diff --git a/src/apache.c b/src/apache.c
index 530481be..7c48f085 100644
--- a/src/apache.c
+++ b/src/apache.c
@@ -1,6 +1,7 @@
 /**
  * collectd - src/apache.c
  * Copyright (C) 2006  Florian octo Forster
+ * Copyright (C) 2007  Florent EppO Monbillard
  *
  * 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
@@ -18,6 +19,8 @@
  *
  * Authors:
  *   Florian octo Forster <octo at verplant.org>
+ *   Florent EppO Monbillard <eppo at darox.net>
+ *   - connections/lighttpd extension
  **/
 
 #include "collectd.h"
@@ -75,6 +78,15 @@ static char *scoreboard_ds_def[] =
 };
 static int scoreboard_ds_num = 1;
 
+/* for lighttpd; Limit to 65536 active connections */
+static char *connections_file = "apache/apache_connections.rrd";
+static char *connections_ds_def[] =
+{
+	"DS:connections:GAUGE:"COLLECTD_HEARTBEAT":0:65536", 
+	NULL
+};
+static int connections_ds_num = 1;
+
 static char *config_keys[] =
 {
 	"URL",
@@ -197,6 +209,12 @@ static void scoreboard_write (char *host, char *inst, char *val)
 	rrd_update_file (host, buf, val, scoreboard_ds_def, scoreboard_ds_num);
 }
 
+static void connections_write (char *host, char *inst, char *val)
+{
+	rrd_update_file (host, connections_file, val, connections_ds_def,
+			connections_ds_num);
+}
+
 #if APACHE_HAVE_READ
 static void submit (char *type, char *inst, long long value)
 {
@@ -319,6 +337,8 @@ static void apache_read (void)
 		{
 			if (strcmp (fields[0], "Scoreboard:") == 0)
 				submit_scoreboard (fields[1]);
+			else if (strcmp (fields[0], "BusyServers:") == 0)
+				submit ("apache_connections", NULL, atol (fields[1]));
 		}
 	}
 
@@ -334,6 +354,7 @@ void module_register (void)
 	plugin_register ("apache_requests",   NULL, NULL, requests_write);
 	plugin_register ("apache_bytes",      NULL, NULL, bytes_write);
 	plugin_register ("apache_scoreboard", NULL, NULL, scoreboard_write);
+	plugin_register ("apache_connections", NULL, NULL, connections_write);
 	cf_register (MODULE_NAME, config, config_keys, config_keys_num);
 }
 
-- 
2.11.0