Merge pull request 'implement retry' (#6) from y266shen/mirror-checker:feature-retry into master

Reviewed-on: #6
time-parsing
Raymond Li 6 months ago
commit 4a3cedfb07
  1. 40
      main.py

@ -8,11 +8,15 @@ import time
import sys
import requests
from multiprocessing import Pool, Manager
from typing import Optional
from time import sleep, localtime, strftime
from projects import *
import json
NUM_THREAD = 16
MAX_RETRY = 3
RETRY_TIMEOUT = 30 # In seconds
current_time = int(time.time())
@ -21,33 +25,51 @@ def safe_print(*args, **kwargs):
# due to buffering. Make sure to always flush the output.
print(*args, **kwargs, flush=True)
def check_project(args):
# Return None if no error occurs and a string for error message otherwise
def check_project(args) -> Optional[str]:
project, data = args
try:
project_class = getattr(sys.modules[__name__], project)
# Skip projects we no longer mirror
if data[project].get('exclude', False):
return True
return None
checker_result = project_class.check(data, project, current_time)
if checker_result:
data[project]["out_of_sync_since"] = None
safe_print(f"Success: {project} up-to-date")
return True
return None
elif (data[project]["out_of_sync_since"] is not None
and current_time - data[project]["out_of_sync_since"] > data[project]["out_of_sync_interval"]):
safe_print(f"Failure: {project} out-of-sync")
return False
time_str = strftime("%d %b %Y %H:%M:%S (local time)", localtime())
return f"{project} out-of-sync at {time_str}"
else:
data[project]["out_of_sync_since"] = current_time
return True
return None
except requests.exceptions.RequestException as err:
safe_print(f"Error: {project}\n{err}")
return f"{project}\n{err}"
def check_project_with_retry(args) -> bool:
project, _ = args
errs = []
for _ in range(MAX_RETRY):
res = check_project(args)
if res == None:
safe_print(f"Success: {project} up-to-date")
return True
else:
errs.append(res)
# Do nothing, try again later
sleep(RETRY_TIMEOUT)
# Max try reached, print errors
safe_print(f"Error: {project}")
for reason in errs:
safe_print(f" {reason}")
return False
@ -61,7 +83,7 @@ def main():
sync_data = manager.dict({k: manager.dict(v) for k, v in data.items()})
with Pool(NUM_THREAD) as pool:
all_pass = all(pool.imap(check_project, ((k, sync_data) for k in data.keys())))
all_pass = all(pool.imap(check_project_with_retry, ((k, sync_data) for k in data.keys())))
with open(data_file, "w", encoding="utf-8") as file:
json.dump({k: dict(v) for k, v in sync_data.items()}, file, indent=' ')

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