fence_lantronix

#!/usr/bin/python

# The Following Agent Has Been Tested On:
#
# Lantronix SLP 16
# SecureLinux Power Manager Version 5.3q

import sys, re, pexpect, time
sys.path.append("/usr/share/fence")
from fencing import *

def get_power_status(conn, options):
	result = ""
	try:
		#The `status` command lists outlet and on/off info
		conn.send_eol("status " + options["-s"])

		#Split everything before command prompt (options["-c"])
		#This will let us see the results of `status` in conn.before
                conn.log_expect(options, options["-c"], int(options["-Y"]))
		status = re.search("\son\s",conn.before.lower())

		#If "on" isn't in the status, we assume the outlet is off
		result = "off" if status is None else "on"
	except pexpect.EOF:
		fail(EC_CONNECTION_LOST)
	except pexpect.TIMEOUT:
		fail(EC_TIMED_OUT)

	return result

def set_power_status(conn, options):
	try:
		cmd = "on" if options["-o"]=="on" else "off"
		#We aren't doing any special checks on plug before use
		plug = options["-s"]
		cmd_line = cmd + ' '+ plug
		conn.send_eol(cmd_line)
		#conn.send_eol(options["-o"])
		conn.log_expect(options, options["-c"],int(options["-g"]))
		#Get the machine some time between poweron and poweroff
		#time.sleep(int(options["-g"]))
		
	except pexpect.EOF:
		fail(EC_CONNECTION_LOST)
	except pexpect.TIMEOUT:
		fail(EC_TIMED_OUT)
		
def main():
	device_opt = [  "help", "version", "agent", "quiet", "verbose", "debug",
			"action", "ipaddr", "login", "passwd", "passwd_script",
			"switch", "secure", "identity_file", "test", "inet4_only", "inet6_only", "ipport",
			"power_timeout", "shell_timeout", "login_timeout", "power_wait" ]

	atexit.register(atexit_handler)
	
	pinput = process_input(device_opt)
	pinput["-x"] = 1
	options = check_input(device_opt, pinput)

	# Default command is SLP: 
	if (not options.has_key("-c")):
		options["-c"] = "SLP:\ "
	
	docs = { }
	docs["shortdesc"] = "Fence agent for LANTRONIX SLP 16"
	docs["longdesc"] = "fence_lantronix is an I/O Fencing \
agent which can be used with LANTRONIX connected machines."
	show_docs(options, docs)
		
	# Operate the fencing device
	conn = fence_login(options)
	result = fence_action(conn, options, set_power_status, get_power_status,None)

	# Logout from system
	try:
		conn.send_eol("logout")
		conn.close()
	except exceptions.OSError:
		pass
	except pexpect.ExceptionPexpect:
		pass	                                         

	sys.exit(result)

if __name__ == "__main__":
	main()