offlineimap daemon added

.config/Scripts/offlineimap-daemon.py

@@ -0,0 +1,93 @@
+#!/usr/bin/env python3
+
+import subprocess
+import signal
+import threading
+import sys
+
+import dbus
+from dbus.mainloop.glib import DBusGMainLoop
+from gi.repository import GLib
+
+
+class OfflineimapCtl(object):
+	def __init__(self):
+		self.daemon_proc = None
+		self.run_ev = threading.Event()
+		self.run_daemon = False
+
+	def run(self):
+		t = threading.Thread(target=self._watch_daemon, daemon=True)
+		t.start()
+
+	def _watch_daemon(self):
+		while True:
+			self.run_ev.wait()
+			self.run_ev.clear()
+			if self.run_daemon:
+				self.is_running = True
+				print('offlineimap is being started')
+				self._spawn_daemon()
+				print('offlineimap has stopped')
+				self.run_ev.set() # check state and restart if needed
+
+	def _spawn_daemon(self):
+		self.daemon_proc = subprocess.Popen(['offlineimap', '-u', 'basic'], shell=False)
+		self.daemon_proc.wait()
+		self.daemon_proc = None
+
+	def start(self):
+		print('starting offlineimap')
+		self.run_daemon = True
+		self.run_ev.set()
+
+	def stop(self):
+		print('stopping offlineimap')
+		self.run_daemon = False
+		if self.daemon_proc:
+			try:
+				self.daemon_proc.send_signal(signal.SIGUSR2)
+			except OSError:
+				print('Unable to stop offlineimap')
+
+	def restart(self):
+		print('restarting offlineimap')
+		if self.run_daemon:
+			self.stop()
+			self.start()
+
+	def onConnectivityChanged(self, state):
+		# 70 means fully connected
+		if state == 70:
+			self.start()
+		else:
+			self.stop()
+
+def main():
+	oi_ctl = OfflineimapCtl()
+	oi_ctl.run()
+
+	try:
+		bus = dbus.SystemBus(mainloop=DBusGMainLoop())
+		network_manager = bus.get_object(
+			'org.freedesktop.NetworkManager',
+			'/org/freedesktop/NetworkManager')
+		network = dbus.Interface(network_manager,
+			dbus_interface='org.freedesktop.NetworkManager')
+
+		network.connect_to_signal('StateChanged', oi_ctl.onConnectivityChanged)
+
+		# send current state as first event
+		state = network.state()
+		oi_ctl.onConnectivityChanged(state)
+
+	except dbus.exceptions.DBusException:
+		print('Unable to connect to dbus')
+		sys.exit(3)
+
+	# start receiving events from dbus
+	loop = GLib.MainLoop()
+	loop.run()
+
+if __name__ == '__main__':
+	main()

.config/Scripts/offlineimap-daemonctl.sh

@@ -0,0 +1,40 @@
+#!/bin/sh
+# this script runs offline imap as daemon (configured to check periodically)
+
+LOG=~/.offlineimap/sync.log
+PIDFILE=~/.offlineimap/pid
+
+# if not present on PATH, those vars must point to proper locations
+THIS_SCRIPT=offlineimap-daemonctl.sh
+PYTHON_DAEMON=offlineimap-daemon.py
+
+daemon(){
+	$PYTHON_DAEMON 2>&1 |
+	# add timestamps to logs
+	(while read line; do
+		echo `date` "$line" >> $LOG
+	done)
+}
+
+stop(){
+	kill -USR2 `cat $PIDFILE`
+}
+
+refresh(){
+	kill -USR1 `cat $PIDFILE`
+}
+
+case "$1" in
+	'--daemon' | '-d' )
+		nohup $THIS_SCRIPT < /dev/null > /dev/null 2>&1 &
+		;;
+	'--kill' | '-k' )
+		stop
+		;;
+	'--refresh' | '-r' )
+		refresh
+		;;
+	* )
+		daemon
+		;;
+esac

.config/i3/config

@@ -40,6 +40,9 @@ exec --no-startup-id python ~/.config/Scripts/shortcuts.py
 exec --no-startup-id ~/.config/Scripts/screen.sh v
 #Launch Polybar where appropriate:
 exec_always --no-startup-id ~/.config/polybar/launch.sh
+#Start the offlineimap daemon;
+exec --no-startup-id killall python ~/.config/Scripts/offlineimap-daemon.py
+exec --no-startup-id python ~/.config/Scripts/offlineimap-daemon.py
 #Add wallpaper:
 #exec --no-startup-id feh --bg-scale ~/.config/wall.png
 exec_always --no-startup-id wal -c -i ~/.config/wall.png