1 from sfa.util.sfalogging import logger
2 from sfa.util.xml import XpathFilter
3 from sfa.util.xrn import Xrn
5 from sfa.rspecs.elements.element import Element
6 from sfa.rspecs.elements.node import Node
7 from sfa.rspecs.elements.sliver import Sliver
8 from sfa.rspecs.elements.location import Location
9 from sfa.rspecs.elements.hardware_type import HardwareType
10 from sfa.rspecs.elements.disk_image import DiskImage
11 from sfa.rspecs.elements.interface import Interface
12 from sfa.rspecs.elements.bwlimit import BWlimit
13 from sfa.rspecs.elements.pltag import PLTag
14 from sfa.rspecs.elements.versions.nitosv1Sliver import NITOSv1Sliver
15 from sfa.rspecs.elements.versions.nitosv1PLTag import NITOSv1PLTag
16 from sfa.rspecs.elements.versions.pgv2Services import PGv2Services
17 from sfa.rspecs.elements.lease import Lease
18 from sfa.rspecs.elements.spectrum import Spectrum
19 from sfa.rspecs.elements.channel import Channel
25 def add_channels(xml, channels):
27 network_elems = xml.xpath('//network')
28 if len(network_elems) > 0:
29 network_elem = network_elems[0]
30 elif len(channels) > 0:
31 # dirty hack that handles no resource manifest rspec
33 network_elem = xml.add_element('network', name = network_urn)
37 # spectrum_elems = xml.xpath('//spectrum')
38 # spectrum_elem = xml.add_element('spectrum')
40 # if len(spectrum_elems) > 0:
41 # spectrum_elem = spectrum_elems[0]
42 # elif len(channels) > 0:
43 # spectrum_elem = xml.add_element('spectrum')
47 spectrum_elem = network_elem.add_instance('spectrum', [])
50 for channel in channels:
51 channel_fields = ['channel_num', 'frequency', 'standard']
52 channel_elem = spectrum_elem.add_instance('channel', channel, channel_fields)
53 channel_elems.append(channel_elem)
57 def get_channels(xml, filter={}):
58 xpath = '//channel%s | //default:channel%s' % (XpathFilter.xpath(filter), XpathFilter.xpath(filter))
59 channel_elems = xml.xpath(xpath)
60 return NITOSv1Channel.get_channel_objs(channel_elems)
63 def get_channel_objs(channel_elems):
65 for channel_elem in channel_elems:
66 channel = Channel(channel_elem.attrib, channel_elem)
67 channel['channel_num'] = channel_elem.attrib['channel_num']
68 channel['frequency'] = channel_elem.attrib['frequency']
69 channel['standard'] = channel_elem.attrib['standard']
71 channels.append(channel)