userdata_base64.py

userdata_base64.py

#!/usr/bin/env python
import os
import sys
import base64
import simplejson


def usage():
    print >> sys.stderr, 'Usage: %s {f_userdata} {f_spot_configuration}' % (
            os.path.basename(sys.argv[0]))
    exit(1)

def main():
    if len(sys.argv) != 3:
        usage()
    spot_cfg = simplejson.load(open(sys.argv[2], "r"))
    spot_cfg['UserData'] = base64.b64encode(open(sys.argv[1], "r").read())
    simplejson.dump(spot_cfg, open(sys.argv[2],"w"), sort_keys=True, indent=4, separators=(',', ': '))

if __name__ == "__main__":
    main()