--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/service/dpms/dpms.py	Mon May 07 00:17:09 2012 -0700
@@ -0,0 +1,72 @@
+#!bin/python
+
+"""
+sample supervisord block
+
+[program:dpms_9095]
+directory=/my/proj/homeauto/service/dpms
+command=/my/proj/homeauto/service/dpms/bin/python dpms.py
+environment=DISPLAY=:0.0
+user=drewp
+
+On one box, this goes super slow when avahi daemon is running. Maybe
+it's for an attempted dns lookup of the requesting IP address, which I
+wish I could switch off.
+
+"""
+
+from bottle import run, get, put, request, response
+import subprocess, sys, socket
+from rdflib import Namespace, URIRef
+DEV = Namespace("http://projects.bigasterisk.com/device/")
+ROOM = Namespace("http://projects.bigasterisk.com/room/")
+
+sys.path.append("/my/site/magma")
+from stategraph import StateGraph
+
+def getMonitorState():
+    out = subprocess.check_output(['xset', 'q'])
+    for line in out.splitlines():
+        line = line.strip()
+        if line == 'Monitor is On':
+            response.set_header('content-type', 'text/plain')
+            return 'on'
+        elif line == 'Monitor is Off':
+            response.set_header('content-type', 'text/plain')
+            return 'off'
+    raise NotImplementedError("no matching monitor line in xset output")
+
+@get("/")
+def index():
+    getMonitorState() # to make it fail if xset isn't working
+    return '''
+      Get and put the <a href="monitor">monitor power</a> with dpms.
+      <a href="graph">rdf graph</a> available.'''
+    
+@get("/monitor")
+def monitor():
+    return getMonitorState()
+
+@put("/monitor")
+def putMonitor():
+    body = request.body.read().strip()
+    if body in ['on', 'off']:
+        subprocess.check_call(['xset', 'dpms', 'force', body])
+        response.status = 204
+    else:
+        raise NotImplementedError("body must be 'on' or 'off'")
+    return ''
+
+@get("/graph")
+def graph():
+    host = socket.gethostname()
+    g = StateGraph(ctx=DEV['dpms/%s' % host])
+    g.add((URIRef("http://bigasterisk.com/host/%s/monitor" % host),
+           ROOM['powerState'],
+           ROOM[getMonitorState()]))
+    
+    response.set_header('Content-type', 'application/x-trig')
+    return g.asTrig()
+    
+run(host="0.0.0.0", port=9095, quiet=True)
+