87 lines
2.8 KiB
Python
Executable file
87 lines
2.8 KiB
Python
Executable file
import os
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import sys
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import subprocess
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import json
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import time
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import shutil
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import multiprocessing
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from pathlib import Path
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MAX_PROCESSES = multiprocessing.cpu_count()
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SCRIPT_DIRECTORY = os.path.dirname(os.path.abspath(__file__))
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PORTS_DIRECTORY = os.path.join(SCRIPT_DIRECTORY, '../ports')
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VERSIONS_DB_DIRECTORY = os.path.join(SCRIPT_DIRECTORY, '../versions')
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def get_current_git_ref():
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output = subprocess.run(['git', '-C', SCRIPT_DIRECTORY, 'rev-parse', '--verify', 'HEAD'],
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capture_output=True,
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encoding='utf-8')
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if output.returncode == 0:
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return output.stdout.strip()
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print(f"Failed to get git ref:", output.stderr.strip(), file=sys.stderr)
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return None
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def generate_versions_file(port_name):
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containing_dir = os.path.join(VERSIONS_DB_DIRECTORY, f'{port_name[0]}-')
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os.makedirs(containing_dir, exist_ok=True)
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output_file_path = os.path.join(containing_dir, f'{port_name}.json')
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if not os.path.exists(output_file_path):
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env = os.environ.copy()
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env['GIT_OPTIONAL_LOCKS'] = '0'
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output = subprocess.run(
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[os.path.join(SCRIPT_DIRECTORY, '../vcpkg'),
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'x-history', port_name, '--x-json', f'--output={output_file_path}'],
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capture_output=True, encoding='utf-8', env=env)
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if output.returncode != 0:
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print(f'x-history {port_name} failed: ',
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output.stdout.strip(), file=sys.stderr)
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def generate_versions_db(revision):
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start_time = time.time()
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# Assume each directory in ${VCPKG_ROOT}/ports is a different port
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port_names = [item for item in os.listdir(
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PORTS_DIRECTORY) if os.path.isdir(os.path.join(PORTS_DIRECTORY, item))]
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total_count = len(port_names)
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concurrency = MAX_PROCESSES / 2
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print(f'Running {concurrency:.0f} parallel processes')
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process_pool = multiprocessing.Pool(MAX_PROCESSES)
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for i, _ in enumerate(process_pool.imap_unordered(generate_versions_file, port_names), 1):
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sys.stderr.write(
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f'\rProcessed: {i}/{total_count} ({(i / total_count):.2%})')
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process_pool.close()
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process_pool.join()
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# Generate timestamp
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rev_file = os.path.join(VERSIONS_DB_DIRECTORY, revision)
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Path(rev_file).touch()
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elapsed_time = time.time() - start_time
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print(
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f'\nElapsed time: {elapsed_time:.2f} seconds')
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def main():
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revision = get_current_git_ref()
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if not revision:
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print('Couldn\'t fetch current Git revision', file=sys.stderr)
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sys.exit(1)
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rev_file = os.path.join(VERSIONS_DB_DIRECTORY, revision)
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if os.path.exists(rev_file):
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print(f'Database files already exist for commit {revision}')
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sys.exit(0)
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generate_versions_db(revision)
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if __name__ == "__main__":
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main()
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