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# Script for checking whether a mapping exists in the vpp's map-cache
#
# Params:
# vat_exec - VAT executable
# vpp_prefix - shared vpp memory prefix
# mapping - mapping to verify
import sys
import subprocess
import json
def has_mapping(json, mapping):
if len (json) == 0:
return False
for obj in json:
if obj['eid'] == mapping:
return True;
return False
def verify_mapping(vat_exec, prefix, mapping, vat_path):
vat_file = vat_path + '/' + 'dump_remote_mappings.tpl'
out = subprocess.Popen([vat_exec, "chroot", "prefix", prefix, "json", "script",
"in", vat_file], stdout=subprocess.PIPE).communicate()[0]
o = json.loads(out)
return has_mapping(o, mapping)
if __name__ == "__main__":
if len(sys.argv) < 4:
raise Exception('expected 4 parameters: VAT executable, shared prefix '
+ ' name, mapping expected, path to vat templates!')
if verify_mapping(sys.argv[1], sys.argv[2], sys.argv[3], sys.argv[4]):
sys.exit(0)
else:
sys.exit(1)
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