clist

#!/usr/bin/env python2
try:
	import sys, os
	######### set defaultt c3 path ########################
        try:
                def_path = os.environ[ 'C3_PATH' ]
        except KeyError:
                def_path = '/opt/c3-4'
        #######################################################

	sys.path.append( def_path )
	import c3_com_obj, c3_file_obj, socket, re

	######## constants ####################################
	help_info = """c3 version 4.0
	Usage: clist [OPTIONS]

		--help -h	= this screen
		--file -f       = file containing list of ip's if
				  one is not supplied then
				  /etc/c3.conf will be used
		
	"""
	backslash = re.compile( r"\\" )

	filename = "/etc/c3.conf"       #default config file  

	#######################################################


	# first create one large string of the command 
	command_line_list = sys.argv[1:]
	command_line_string = ''
	for item in command_line_list:
		command_line_string = '%s %s' % (command_line_string, item)

	# object used to parse command line
	c3_command = c3_com_obj.c3_command_line( command_line_string )
	 
	# get first option
	try:
		file_set = 0
		option = c3_command.get_opt()
		while option: # while more options
			if option == '-h' or option == "--help": # print help info
				print help_info
				print "exiting...."
				sys.exit()

			elif (option == '-f') or (option == '--file'): # alternate config file
				if not file_set:
					filename = c3_command.get_opt_string()
					file_set = 1
				else:
					print "only one file name can be specified."
					sys.exit()
			
			else:
				print "invalid option"
				sys.exit()
			option = c3_command.get_opt()
	except c3_com_obj.end_of_option:
		pass

        ######### set filename  ##########################
        if not file_set:
                try:
                        filename = os.environ[ 'C3_CONF' ]
                except KeyError:
                        filename = '/etc/c3.conf'
        #######################################################

	######### make cluster list object from file ##########
	try: # open file & initialize file parser
		file = c3_file_obj.cluster_def( filename )
	except IOError:
		print "error opening file: ", filename
		sys.exit()

	try:
		while(1): #throws exception when no more clusters
			file.get_next_cluster()
			try:
				local_ip = socket.gethostbyname( socket.gethostname() )
			except socket.error:
				print "Can not resolve local hostname"
				sys.exit()
			try:
				int_ip = socket.gethostbyname( file.get_internal_head_node() )
			except socket.error:
				int_ip = ""
			try:
				ext_ip = socket.gethostbyname( file.get_external_head_node() )
			except socket.error:
				ext_ip = ""
			except TypeError:
				ext_ip = int_ip

			if file.get_external_head_node():
				if ext_ip == local_ip or int_ip == local_ip:
					print "cluster ", file.get_cluster_name(), " is a direct local cluster"
				else:
					print "cluster ", file.get_cluster_name(), " is a direct remote cluster"
			else:
				print "cluster ", file.get_cluster_name(), " is an indirect remote cluster"
			
			
	except c3_file_obj.no_more_clusters:
		pass
		
	except c3_file_obj.parse_error, error:
		print error.description
		print "somewhere around ", error.last
		sys.exit()
except KeyboardInterrupt:
        print "Keyboard interrupt\n"