From ad48c7c534bddc6e8536500f6d49826c137d82be Mon Sep 17 00:00:00 2001
From: Sander van der Burg <s.vanderburg@tudelft.nl>
Date: Sun, 21 Nov 2010 13:28:48 +0000
Subject: [PATCH] Initial implementation for the Disnix avahi publisher

svn path=/nixos/trunk/; revision=24789
---
 modules/services/misc/disnix.nix | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/modules/services/misc/disnix.nix b/modules/services/misc/disnix.nix
index 63b8394c280..5714e8ddc79 100644
--- a/modules/services/misc/disnix.nix
+++ b/modules/services/misc/disnix.nix
@@ -33,6 +33,11 @@ in
         default = false;
 	description = "Whether to enable the DisnixWebService interface running on Apache Tomcat";
       };
+      
+      publishAvahi = mkOption {
+        default = false;
+	description = "Whether to publish capabilities/properties as a Disnix service through Avahi";
+      };
 
     };
     
@@ -75,6 +80,26 @@ in
           '';
       };
 
+  } //
+  mkIf cfg.publishAvahi {
+  
+    services.avahi.enable = true;
+  
+    jobs.disnixAvahi =
+      { description = "Disnix Avahi publisher";
+      
+        startOn = "started avahi-daemon";
+	
+	exec =
+        ''
+          ${pkgs.avahi}/bin/avahi-publish-service disnix-$(${pkgs.nettools}/bin/hostname) _disnix._tcp 22 \
+            "hostname=\"$(${pkgs.nettools}/bin/hostname)\"" \
+	    "mem=$(grep 'MemTotal:' /proc/meminfo | sed -e 's/kB//' -e 's/MemTotal://' -e 's/ //g')" \
+            ${optionalString (config.services.httpd.enable) ''"documentRoot=\"${config.services.httpd.documentRoot}\""''} \
+            ${optionalString (config.services.mysql.enable) ''"mysqlPort=3306"''} \
+            ${optionalString (config.services.tomcat.enable) ''"tomcatPort=8080"''} \
+            "supportedTypes=[$(for i in ${disnix_activation_scripts}/libexec/disnix/activation-scripts/*; do echo -n " \"$(basename $i)\""; done) ]"
+        '';
+      };
   };
-
 }