def _get_device_from_info_and_ports(self, info, udi, ports):
"""
Returns a C{DevicePlugin} out of C{info} and C{dport} and {cport}
"""
from vmc.common.plugin import PluginManager
plugin = PluginManager.get_plugin_by_vendor_product_id(*info.values())
if plugin:
# set its udi
plugin.udi = udi
if hasattr(plugin, 'preprobe_init'):
# this plugin requires special initialisation before probing
plugin.preprobe_init(ports, extract_info(info))
if hasattr(plugin, 'hardcoded_ports'):
# this plugin registers its ports in a funky way and thus
# the probe algorithm wont work for it. hardcoded_ports is
# a tuple of size two that contains the indexes of the ports
# that should be used for dport and cport.
dport_index, cport_index = plugin.hardcoded_ports
dport = ports[dport_index]
try:
if type(cport_index) == type(None):
cport = None
else:
cport = ports[cport_index]
except Exception, e:
log.err()
cport = None
else:
# probe ports
dport, cport = probe_ports(ports)
if not dport and not cport:
# this shouldn't happen
raise RuntimeError("No data port and no control port")
print "data port is %s" % dport
if cport:
print "ctrl port is %s" % cport
plugin.cport, plugin.dport = cport, dport
return plugin
