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#!/usr/bin/python
from cloudinit import handlers
from cloudinit.handlers import cloud_config as cc_part
from cloudinit import helpers
from cloudinit.settings import PER_INSTANCE
from cloudinit import user_data as ud
import argparse
import os
import shutil
import tempfile
def main():
parser = argparse.ArgumentParser(
description='test cloud-config merging')
parser.add_argument("--output", "-o", metavar="file",
help="specify output file", default="-")
parser.add_argument('files', nargs='+')
args = parser.parse_args()
outfile = args.output
if args.output == "-":
outfile = "/dev/stdout"
tempd = tempfile.mkdtemp()
handler_dir = os.path.join(tempd, "hdir")
data = None # the 'init' object
frequency = PER_INSTANCE
paths = helpers.Paths({})
# make a '#include <f1>' style
udproc = ud.UserDataProcessor(paths=paths)
user_data_msg = udproc.process("#include\n" +
'\n'.join([os.path.abspath(f) for f in args.files]))
ccph = cc_part.CloudConfigPartHandler(paths=paths)
ccph.cloud_fn = outfile
c_handlers = helpers.ContentHandlers()
c_handlers.register_defaults([ccph])
called = []
for (_ctype, mod) in c_handlers.iteritems():
if mod in called:
continue
handlers.call_begin(mod, data, frequency)
called.append(mod)
# Walk the user data
part_data = {
'handlers': c_handlers,
# Any new handlers that are encountered get writen here
'handlerdir': handler_dir,
'data': data,
# The default frequency if handlers don't have one
'frequency': frequency,
# This will be used when new handlers are found
# to help write there contents to files with numbered
# names...
'handlercount': 0,
}
handlers.walk(user_data_msg, handlers.walker_callback, data=part_data)
# Give callbacks opportunity to finalize
called = []
for (_ctype, mod) in c_handlers.iteritems():
if mod in called:
continue
handlers.call_end(mod, data, frequency)
called.append(mod)
shutil.rmtree(tempd)
if __name__ == "__main__":
main()
# vi: ts=4 expandtab
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