libstratis 2.4.2

Stratis daemon
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#!/usr/bin/python3
#
# Copyright 2020 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License 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.
"""
Verify that the lower bounds set on dependencies in Cargo.toml are not
incorrect by being too low.
"""


# isort: STDLIB
import argparse
import subprocess
import sys

# isort: LOCAL
from _utils import build_cargo_metadata, build_cargo_tree_dict


def _do_updates(explicit_dependencies, cargo_tree):
    """
    Emit commands that update dependencies to the lowest allowed by Cargo.toml.
    """
    assert frozenset(explicit_dependencies.keys()) == frozenset(
        cargo_tree.keys()
    ), "in Cargo.toml but not in 'cargo tree' output: %s, vice-versa: %s" % (
        frozenset(explicit_dependencies.keys()) - frozenset(cargo_tree.keys()),
        frozenset(cargo_tree.keys()) - frozenset(explicit_dependencies.keys()),
    )

    update_failed = False
    for (crate, version) in explicit_dependencies.items():
        current_version = cargo_tree[crate]
        try:
            subprocess.run(
                [
                    "cargo",
                    "update",
                    "-p",
                    "%s:%s" % (crate, current_version),
                    "--precise=%s" % version,
                ],
                check=True,
            )
        except subprocess.CalledProcessError as err:
            update_failed = True
            print(err, file=sys.stderr)

    return "Failed to set the versions of some crates" if update_failed else None


def main():
    """
    The main method
    """
    parser = argparse.ArgumentParser(
        description=(
            "Lowers all dependencies in Cargo.lock to the versions specified "
            "in Cargo.toml."
        )
    )
    parser.parse_args()

    # Read the dependency versions specified in Cargo.toml
    explicit_dependencies = build_cargo_metadata()

    # Read the dependency versions specified in Cargo.lock from Cargo.toml
    current_dependencies = build_cargo_tree_dict()

    return _do_updates(explicit_dependencies, current_dependencies)


if __name__ == "__main__":
    sys.exit(main())