#!/usr/bin/env python

# -----------------------------------------------------------------------------
# Invokes the ONOS CLI and looks for a 'maps' entry with the given name
# -----------------------------------------------------------------------------

import subprocess
import json
import sys

if len(sys.argv) != 4:
    print "usage: onos-find-and-check-map onos-node map-name should-be-zero"
    sys.exit(1)

node = sys.argv[1]
mapName = sys.argv[2]
shouldBeZero = sys.argv[3]

cli = subprocess.Popen(["onos", node, "maps", "-j"], stdout=subprocess.PIPE)
json = json.loads(cli.communicate()[0])

for map in json:
    foundMapName = map["name"]
    foundMapSize = map["size"]

    print foundMapName
    print foundMapSize

    if foundMapName == mapName:
        if (shouldBeZero == 'yes' and foundMapSize == 0) or \
           (shouldBeZero != 'yes' and foundMapSize != 0):
            sys.exit(0)
        else:
            sys.exit(1)

sys.exit(1)