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#!/usr/bin/env python
from argparse import ArgumentParser
import json
from jujupy.client import (
describe_substrate,
ModelClient,
SimpleEnvironment,
)
def parse_args(args=None):
"""Parse commandline arguments into a Namespace."""
parser = ArgumentParser()
parser.add_argument('buildvars',
help="Path to the new client's buildvars.json.")
parser.add_argument('env', help='The name of the environment.')
parser.add_argument('output', help='Path of the file to write.')
return parser.parse_args(args)
def make_metadata(buildvars_path, env_name):
"""Return metadata about the clients as json-compatible objects.
:param buildbars_path: Path to the buildvars.json file for the new client.
:param env_name: Name of the environment being used.
"""
old_version = ModelClient.get_version()
env = SimpleEnvironment.from_config(env_name)
with open(buildvars_path) as buildvars_file:
buildvars = json.load(buildvars_file)
metadata = {
'old_client': {
'type': 'release',
'version': old_version
},
'new_client': {
'type': 'build',
'buildvars': buildvars,
},
'environment': {
'name': env_name,
'substrate': describe_substrate(env)
},
}
return metadata
def main(argv=None):
"""Generate the date and write it to disk."""
args = parse_args(argv)
metadata = make_metadata(args.buildvars, args.env)
with open(args.output, 'w') as output_file:
json.dump(metadata, output_file, indent=2, sort_keys=True)
output_file.write('\n')
if __name__ == '__main__':
main()
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