Added preliminary Apache Felix service

svn path=/nixos/trunk/; revision=21244

modules/misc/ids.nix

@@ -52,6 +52,7 @@ in
     ddclient = 30;
     davfs2 = 31;
     privoxy = 32;    
+    osgi = 34;
     # When adding a uid, make sure it doesn't match an existing gid.
 
     nixbld = 30000; # start of range of uids
@@ -91,6 +92,7 @@ in
     davfs2 = 31;
     privoxy = 32;
     disnix = 33;
+    osgi = 34;
     # When adding a gid, make sure it doesn't match an existing uid.
 
     users = 100;

modules/module-list.nix

@@ -58,6 +58,7 @@
   ./services/mail/postfix.nix
   ./services/misc/autofs.nix
   ./services/misc/disnix.nix
+  ./services/misc/felix.nix
   ./services/misc/gpsd.nix
   ./services/misc/nix-daemon.nix
   ./services/misc/nix-gc.nix

modules/services/misc/felix.nix

@@ -0,0 +1,110 @@
+# Felix server
+{ config, pkgs, ... }:
+
+with pkgs.lib;
+
+let
+
+  cfg = config.services.felix;
+
+in
+
+{
+
+  ###### interface
+  
+  options = {
+  
+    services.felix = {
+    
+      enable = mkOption {
+        default = false;
+        description = "Whether to enable the Apache Felix OSGi service";
+      };
+      
+      bundles = mkOption {
+        default = [ pkgs.felix_remoteshell ];
+        description = "List of bundles that should be activated on startup";
+      };
+
+      user = mkOption {
+        default = "osgi";
+        description = "User account under which Apache Felix runs.";
+      };      
+
+      group = mkOption {
+        default = "osgi";
+        description = "Group account under which Apache Felix runs.";
+      };      
+      
+    };
+    
+  };
+  
+
+  ###### implementation
+
+  config = mkIf cfg.enable {
+    users.extraGroups = singleton
+      { name = "osgi";
+        gid = config.ids.gids.osgi;
+      };
+      
+    users.extraUsers = singleton
+      { name = "osgi";
+        uid = config.ids.uids.osgi;
+        description = "OSGi user";
+        home = "/homeless-shelter";
+      };
+
+    jobs.felix =
+      { description = "Felix server";
+
+        preStart = 
+	  ''
+	    # Initialise felix instance on first startup
+	    if [ ! -d /var/felix ]
+	    then
+	        # Symlink system files
+		
+	        mkdir -p /var/felix
+		chown ${cfg.user}:${cfg.group} /var/felix
+		
+		for i in ${pkgs.felix}/*
+		do
+		    if [ "$i" != "${pkgs.felix}/bundle" ]
+		    then
+		        ln -sfn $i /var/felix/$(basename $i)
+		    fi
+		done
+		
+		# Symlink bundles
+		mkdir -p /var/felix/bundle
+		chown ${cfg.user}:${cfg.group} /var/felix/bundle
+		
+		for i in ${pkgs.felix}/bundle/* ${toString cfg.bundles}
+		do
+		    if [ -f $i ]
+		    then
+		        ln -sfn $i /var/felix/bundle/$(basename $i)
+		    elif [ -d $i ]
+		    then
+		        for j in $i/bundle/*
+			do
+			    ln -sfn $j /var/felix/bundle/$(basename $j)
+			done
+		    fi
+		done
+	    fi
+	  '';
+	  
+        script =
+          ''
+	    cd /var/felix
+            ${pkgs.su}/bin/su -s ${pkgs.bash}/bin/sh ${cfg.user} -c '${pkgs.jre}/bin/java -jar bin/felix.jar'
+          '';
+      };
+
+  };
+
+}