alfred: Add a lightweight framework for running facter scripts that feed data into...

Alfred expects to be fed data periodically, but there's currently no easy
way to do that from scripts, prompting people to write whole C programs
to accomplish tasks that could easily be scripted.
Provide a really simple framework to run scripts every 5 minutes, using a
cronjob, when alfred is started by the init.d script.

Signed-off-by: Gui Iribarren <gui@altermundi.net>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>

diff --git a/alfred/files/alfred.config b/alfred/files/alfred.config
index b8fa9b2882d32161081c68a610679a9333fd7441..9d3fff6801ad1a0272d8af301e0129090010dcea 100644 (file)
--- a/alfred/files/alfred.config
+++ b/alfred/files/alfred.config
@@ -3,5 +3,6 @@ config 'alfred' 'alfred'
        option mode 'master'
        option batmanif 'bat0'
        option start_vis '1'
+       option run_facters '1'
 # REMOVE THIS LINE TO ENABLE ALFRED
        option disabled '1'

diff --git a/alfred/files/alfred.init b/alfred/files/alfred.init
index 56818d84ccb5c91815c934a857527b7ecec82f20..e52a7bd48b1eb3de7f1cd08bd5495979761a664a 100755 (executable)
--- a/alfred/files/alfred.init
+++ b/alfred/files/alfred.init
@@ -11,6 +11,7 @@ START=99
 STOP=99
 alfred_args=""
 vis_args=""
+facters_dir="/etc/alfred"
 pid_file_alfred="/var/run/alfred.pid"
 pid_file_vis="/var/run/vis.pid"
 enable=0
@@ -48,6 +49,8 @@ alfred_start()
                 append vis_args "-i $batmanif -s"
         fi
 
+       config_get_bool run_facters "$section" run_facters 0
+
        return 0
 }
 
@@ -63,12 +66,20 @@ start()
        SERVICE_PID_FILE="$pid_file_alfred"
        service_start /usr/sbin/alfred ${alfred_args}
 
-        if [ "$vis_enable" = "0" ]; then
-                exit 0
-        fi
-        echo "${initscript}: starting vis"
-       SERVICE_PID_FILE="$pid_file_vis"
-        service_start /usr/sbin/vis ${vis_args}
+       if [ "$vis_enable" = "1" ]; then
+               echo "${initscript}: starting vis"
+               SERVICE_PID_FILE="$pid_file_vis"
+               service_start /usr/sbin/vis ${vis_args}
+       fi
+
+       if [ "$run_facters" = "1" ]; then
+               ( for file in $facters_dir/* ; do [ -x $file ] && $file ; done )
+               if ! ( grep -q "for file in $facters_dir/\* ; do " /etc/crontabs/root 2>/dev/null ) ; then
+                       echo "*/5 * * * * ( for file in $facters_dir/* ; do [ -x \$file ] && \$file ; done )" >> /etc/crontabs/root
+                       /etc/init.d/cron enable
+                       /etc/init.d/cron restart
+               fi
+       fi
 }
 
 stop()
@@ -77,5 +88,6 @@ stop()
        service_stop /usr/sbin/alfred
        SERVICE_PID_FILE="$pid_file_vis"
        [ -x /usr/sbin/vis ] && service_stop /usr/sbin/vis
-
+       sed "\|for file in $facters_dir/\* ; do |d" -i /etc/crontabs/root
+       /etc/init.d/cron restart
 }