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nixpkgs/maintainers/scripts/update.py
Jan Tojnar 59a94b57f0
update.nix: Run update scripts in parallel
To make updating large attribute sets faster, the update scripts
are now run in parallel.

Please note the following changes in semantics:

- The string passed to updateScript needs to be a path to an executable file.
- The updateScript can also be a list: the tail elements will then be passed
  to the head as command line arguments.
2018-12-01 19:17:13 +01:00

80 lines
2.7 KiB
Python

import argparse
import concurrent.futures
import json
import os
import subprocess
import sys
updates = {}
def eprint(*args, **kwargs):
print(*args, file=sys.stderr, **kwargs)
def run_update_script(package):
eprint(f" - {package['name']}: UPDATING ...")
subprocess.run(package['updateScript'], stdout=subprocess.PIPE, stderr=subprocess.STDOUT, check=True)
def main(max_workers, keep_going, packages):
with open(sys.argv[1]) as f:
packages = json.load(f)
eprint()
eprint('Going to be running update for following packages:')
for package in packages:
eprint(f" - {package['name']}")
eprint()
confirm = input('Press Enter key to continue...')
if confirm == '':
eprint()
eprint('Running update for:')
with concurrent.futures.ProcessPoolExecutor(max_workers=max_workers) as executor:
for package in packages:
updates[executor.submit(run_update_script, package)] = package
for future in concurrent.futures.as_completed(updates):
package = updates[future]
try:
future.result()
eprint(f" - {package['name']}: DONE.")
except subprocess.CalledProcessError as e:
eprint(f" - {package['name']}: ERROR")
eprint()
eprint(f"--- SHOWING ERROR LOG FOR {package['name']} ----------------------")
eprint()
eprint(e.stdout.decode('utf-8'))
with open(f"{package['pname']}.log", 'wb') as f:
f.write(e.stdout)
eprint()
eprint(f"--- SHOWING ERROR LOG FOR {package['name']} ----------------------")
if not keep_going:
sys.exit(1)
eprint()
eprint('Packages updated!')
sys.exit()
else:
eprint('Aborting!')
sys.exit(130)
parser = argparse.ArgumentParser(description='Update packages')
parser.add_argument('--max-workers', '-j', dest='max_workers', type=int, help='Number of updates to run concurrently', nargs='?', default=4)
parser.add_argument('--keep-going', '-k', dest='keep_going', action='store_true', help='Do not stop after first failure')
parser.add_argument('packages', help='JSON file containing the list of package names and their update scripts')
if __name__ == '__main__':
args = parser.parse_args()
try:
main(args.max_workers, args.keep_going, args.packages)
except (KeyboardInterrupt, SystemExit) as e:
for update in updates:
update.cancel()
sys.exit(e.code if isinstance(e, SystemExit) else 130)