| #!/usr/bin/env python3 |
| # SPDX-FileCopyrightText: Copyright 2022 Arm Limited and/or its affiliates <open-source-office@arm.com> |
| # SPDX-License-Identifier: Apache-2.0 |
| # |
| # 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. |
| |
| import json |
| import sys |
| import hashlib |
| from argparse import ArgumentParser |
| from pathlib import Path |
| |
| |
| def get_md5sum_for_file(filepath: str) -> str: |
| """ |
| Function to calculate md5sum for contents of a given file. |
| |
| Parameters: |
| ---------- |
| filepath (string): Path to the required file. |
| |
| Returns: |
| ------- |
| Hex digest represented as string. |
| """ |
| md5_sum = hashlib.md5() |
| with open(filepath, mode='rb') as f: |
| buf = f.read() |
| md5_sum.update(buf) |
| return md5_sum.hexdigest() |
| |
| |
| def check_update_resources_downloaded( |
| resource_downloaded_dir: str, set_up_script_path: str |
| ): |
| """ |
| Function that check if the resources downloaded need to be refreshed. |
| |
| Parameters: |
| ---------- |
| resource_downloaded_dir (string): Specifies the path to resources_downloaded folder. |
| set_up_script_path (string): Specifies the path to set_up_default_resources.py file. |
| """ |
| |
| metadata_file_path = Path(resource_downloaded_dir) / "resources_downloaded_metadata.json" |
| |
| if metadata_file_path.is_file(): |
| with open(metadata_file_path) as metadata_json: |
| |
| metadata_dict = json.load(metadata_json) |
| md5_key = 'set_up_script_md5sum' |
| set_up_script_md5sum_metadata = '' |
| |
| if md5_key in metadata_dict.keys(): |
| set_up_script_md5sum_metadata = metadata_dict["set_up_script_md5sum"] |
| |
| set_up_script_md5sum_current = get_md5sum_for_file(set_up_script_path) |
| |
| if set_up_script_md5sum_current == set_up_script_md5sum_metadata: |
| return 0 |
| |
| # Return code 1 if the resources need to be refreshed. |
| print('Error: hash mismatch!') |
| print(f'Metadata: {set_up_script_md5sum_metadata}') |
| print(f'Current : {set_up_script_md5sum_current}') |
| return 1 |
| |
| # Return error code 2 if the file doesn't exists. |
| print(f'Error: could not find {metadata_file_path}') |
| return 2 |
| |
| |
| if __name__ == "__main__": |
| parser = ArgumentParser() |
| parser.add_argument( |
| "--resource_downloaded_dir", |
| help="Resources downloaded directory.", |
| type=str, |
| required=True) |
| parser.add_argument( |
| "--setup_script_path", |
| help="Path to set_up_default_resources.py.", |
| type=str, |
| required=True) |
| args = parser.parse_args() |
| |
| # Check validity of script path. |
| if not Path(args.setup_script_path).is_file(): |
| raise ValueError(f'Invalid script path: {args.setup_script_path}') |
| |
| # Check the resources are downloaded as expected |
| status = check_update_resources_downloaded( |
| args.resource_downloaded_dir, |
| args.setup_script_path) |
| sys.exit(status) |