p_vs_np_1.py

# XXX -- Top level review comments:
#
# * Nice exception recovery and logging.
#
# * Please cleanup code formatting.
#   This is a little rough on my eyes.
#
# * Should we use this as template for other
#   short network element scripts?
#
# -- Thanks.   The Boss :-)

import jnettool.tools.elements.NetworkElement, \
       jnettool.tools.Routing, \
       jnettool.tools.RouteInspector
       
ne=jnettool.tools.elements.NetworkElement( '171.0.2.45' )
try:
    routing_table=ne.getRoutingTable()  # fetch table

except jnettool.tools.elements.MissingVar:
    # Record table fault
    logging.exception( '''No routing table found''' )
    # Undo partial changes
    ne.cleanup( '''rollback''' )

else:
    num_routes=routing_table.getSize()  # determine table size
    for RToffset in range( num_routes ):
           route=routing_table.getRouteByIndex( RToffset )
           name=route.getName()       # route name
           ipaddr=route.getIPAddr()          # ip address
           print "%15s -> %s"% (name,ipaddr) # format nicely
finally:
    ne.cleanup( '''commit''' ) # lockin changes
    ne.disconnect()