switch-private-submodules

#!/usr/bin/env python3
#
# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"). You
# may not use this file except in compliance with the License. A copy of
# the License is located at
#
# http://aws.amazon.com/apache2.0/
#
# or in the "license" file accompanying this file. This file is
# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
# ANY KIND, either express or implied. See the License for the specific
# language governing permissions and limitations under the License.


import argparse
import logging
import os
import subprocess
import sys


DESCRIPTION = "Switch between public and private versions of submodules"

MODULES = [{
    "submodule": "aws-encryption-sdk-cpp/tests/test_vectors/aws-encryption-sdk-test-vectors",
    "private": "https://github.com/awslabs/private-aws-encryption-sdk-test-vectors-staging.git",
    "public": "https://github.com/awslabs/aws-encryption-sdk-test-vectors.git",
}, {
    "submodule": "aws-encryption-sdk-specification",
    "private": "https://github.com/awslabs/private-aws-encryption-sdk-specification-staging.git",
    "public": "https://github.com/awslabs/aws-encryption-sdk-specification.git",
}]


def switch_to(version):
    logging.info("Switching to %s version of the submodules", version)
    for module in MODULES:
        cmd = [
            "git", "config",
            f'url."{module[version]}".insteadOf',
            module["public"],
        ]
        logging.info(" ".join(cmd))
        subprocess.run(cmd, check=True)

    subprocess.run(["git", "submodule", "sync"], check=True)
    subprocess.run([
        "git", "submodule", "update", "--init", "--recursive", "--checkout"],
        check=True)


def switch_to_env(_):
    repo = os.getenv("GITHUB_REPOSITORY")
    if not repo:
        logging.error(
            "Could not determine which submodules to check out "
            "($GITHUB_REPOSITORY is not set).")
        sys.exit(1)

    if repo == "aws/private-aws-encryption-sdk-c-staging":
        switch_to("private")
    else:
        switch_to("public")


OPERATIONS = {
    "public": switch_to,
    "private": switch_to,
    "env": switch_to_env,
}


def main():
    pars = argparse.ArgumentParser(description=DESCRIPTION)
    for arg in [{
            "flags": ["operation"],
            "choices": list(OPERATIONS.keys()),
            "default": "public",
            "help": "Switch to public or private versions of the submodules, "
                    "or decide which by reading the $GITHUB_REPOSITORY "
                    "environment variable. Default: %(default)s."
        }, {
            "flags": ["-v", "--verbose"],
            "action": "store_true",
            "help": "verbose output",
    }]:
        flags = arg.pop("flags")
        pars.add_argument(*flags, **arg)
    args = pars.parse_args()

    fmt = "switch-private-submodules: %(message)s"
    if args.verbose:
        logging.basicConfig(format=fmt, level=logging.INFO)
    else:
        logging.basicConfig(format=fmt, level=logging.WARNING)

    OPERATIONS[args.operation](args.operation)


if __name__ == "__main__":
    main()