Arista EOS eAPI tool to get Event Monitor data and convert from text format to string to make it easier to manipulate

getEventMonitorMac.py

#!/usr/bin/python
#
# Copyright (c) 2014
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#  - Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#  - Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#  - Neither the name of Arista Networks nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ARISTA NETWORKS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
# IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


import argparse, urllib2, subprocess, os
from jsonrpclib import Server

# connect to the switch either via http or https
def connect( sIpOrHostname, username, password, secure=True ) :
   return Server( "%s://%s:%s@%s/command-api" 
                  % ( "http" if not secure else "https", 
                     password, username, sIpOrHostname ) )    
                     
def getMacEventMonitor( switch, enablePass, macAddr = None ) :
   rc = switch.runCmds( 1, [ { "cmd": "enable", "input": enablePass },
                             "configure",
                             "show event-monitor mac match-mac " + macAddr ],
                             "text" )
   return rc[2]
                     
def main():

   # Create the command line parser / arguments
   parser = argparse.ArgumentParser(description='Get MAC table information')
   parser.add_argument( 'macAddress', help='MAC address to get details' )
   parser.add_argument( 'sIpOrHostname', help='Switch IP address or Hostname' )
   parser.add_argument( 'username', help='Username' )
   parser.add_argument( 'password', help='Password' )
   parser.add_argument( "--http", help="Use unsecure http connection (default is https)",
                       action="store_false", default=True )      
   parser.add_argument( "--enable-password", help="Enable-mode password",
                        default="" )                                   
   args = parser.parse_args()
   
   # connect to switch
   switch = connect ( args.sIpOrHostname, args.username, args.password, args.http )
   
   # get mac address records from event-monitor
   eventRecords = getMacEventMonitor( switch, args.enable_password, args.macAddress )

   # convert the text output to strings to make it easier to work with
   for macAddress in eventRecords.itervalues() :
      # get back text and separate into records  delimiter \n
      i = eventRecords.values()
      record = i[0].split('\n')
      
      for line in record :
         # if an empty string break out of for loop
         if line == '' : break
         # take records and create lists delimiter |
         recordDetails = line.split('|')
         
         # Put a ' -' in front of the out to make it more readable
         print ' -',
         
         # This position in the string is the action (e.g. add / remove)
         # Check to see the positional argument is '' if so then use the 
         # next value, this is due to how I built the string
         if recordDetails[4] == '' : print '{0:17} | '.format ( recordDetails[5] ),
         else : print '{0:17} | '.format ( recordDetails[4] ),
         
         # This position in the string is the date / time
         print '{0:20} | '.format ( recordDetails[0] ),
         
         # This position in the string is the interface it was learned
         # If no interface (case of removed MAC) print N/A
         if recordDetails[3] == '' : print '{0:15} | '.format ( 'N/A' ),
         else : print '{0:15} | '.format ( recordDetails[3] ),
         
         # This position in the string is the VLAN it was learned
         print '{0:5} | '.format ( recordDetails[1] )
   
if __name__ == '__main__':
   main()