95 lines
2.8 KiB
Python
95 lines
2.8 KiB
Python
#!/usr/bin/env python3
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"""
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This mirror status checker determines whether CSC mirror is up-to-date with upstream
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"""
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import time
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import sys
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import requests
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from multiprocessing import Pool, Manager
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from typing import Optional
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from time import sleep, localtime, strftime
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from projects import *
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import json
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NUM_THREAD = 16
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MAX_RETRY = 3
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RETRY_TIMEOUT = 30 # In seconds
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def safe_print(*args, **kwargs):
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# When run with 'chronic' and 'timeout', stdout gets suppressed
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# due to buffering. Make sure to always flush the output.
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print(*args, **kwargs, flush=True)
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# Return None if no error occurs and a string for error message otherwise
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def check_project(args) -> Optional[str]:
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current_time = int(time.time())
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project, data = args
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try:
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project_class = getattr(sys.modules[__name__], project)
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# Skip projects we no longer mirror
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if data[project].get('exclude', False):
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return None
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checker_result = project_class.check(data, project, current_time)
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if checker_result:
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data[project]["out_of_sync_since"] = None
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return None
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elif (data[project]["out_of_sync_since"] is not None
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and current_time - data[project]["out_of_sync_since"] > data[project]["out_of_sync_interval"]):
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now_str = strftime("%d %b %Y %H:%M:%S (local time)", localtime())
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duration = current_time - data[project]["out_of_sync_since"]
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return f"{project} out-of-sync at {now_str} for {duration}s"
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else:
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data[project]["out_of_sync_since"] = current_time
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return None
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except requests.exceptions.RequestException as err:
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return f"{project}\n{err}"
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def check_project_with_retry(args) -> bool:
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project, _ = args
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errs = []
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for _ in range(MAX_RETRY):
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res = check_project(args)
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if res == None:
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safe_print(f"Success: {project} up-to-date")
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return True
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else:
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errs.append(res)
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# Do nothing, try again later
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sleep(RETRY_TIMEOUT)
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# Max try reached, print errors
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safe_print(f"Error: {project}")
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for reason in errs:
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safe_print(f" {reason}")
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return False
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def main():
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data_file = 'data.json'
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if len(sys.argv) > 1:
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data_file = sys.argv[1]
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manager = Manager()
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data = json.load(open(data_file))
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sync_data = manager.dict({k: manager.dict(v) for k, v in data.items()})
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with Pool(NUM_THREAD) as pool:
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all_pass = all(pool.imap(check_project_with_retry, ((k, sync_data) for k in data.keys())))
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with open(data_file, "w", encoding="utf-8") as file:
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json.dump({k: dict(v) for k, v in sync_data.items()}, file, indent=' ')
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sys.exit(0 if all_pass else 1)
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if __name__ == "__main__":
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main()
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