scripts/replication_util.py

# Copyright 2019 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

"""A CLI to do the replication described by a ReplicationConfig proto."""

from chromite.third_party.google.protobuf import json_format

from chromite.api.gen.config import replication_config_pb2
from chromite.lib import commandline
from chromite.lib import osutils
from chromite.lib import replication_lib


def GetParser():
    """Creates the argparse parser."""
    parser = commandline.ArgumentParser(description=__doc__)
    subparsers = parser.add_subparsers()

    run_subparser = subparsers.add_parser("run", help="Run a ReplicationConfig")
    run_subparser.add_argument(
        "replication_config", help="Path to the ReplicationConfig JSONPB"
    )
    run_subparser.set_defaults(func=Run)

    return parser


def Run(options):
    """Runs the replication described by a PrelicationConfig proto."""
    replication_config = json_format.Parse(
        osutils.ReadFile(options.replication_config),
        replication_config_pb2.ReplicationConfig(),
    )

    replication_lib.Replicate(replication_config)


def main(argv):
    parser = GetParser()
    options = parser.parse_args(argv)
    options.Freeze()

    options.func(options)