zulip/tools/test-queue-worker-reload

97 lines
2.8 KiB
Python
Executable File

#!/usr/bin/env python3
import os
import sys
import time
import signal
import subprocess
import re
# check for the venv
from lib import sanity_check
sanity_check.check_venv(__file__)
from typing import IO, Text
# TODO: Convert this to use scripts/lib/queue_workers.py
TOOLS_DIR = os.path.dirname(os.path.abspath(__file__))
successful_worker_launches = [
'[process_queue] 20 queue worker threads were launched',
]
def check_worker_launch(logfile_name):
# type: (str) -> bool
def check(content):
# type: (str) -> bool
flag = True
for entry in successful_worker_launches:
flag = flag and entry in content
return flag
failed = True
log_output = []
print("Polling logfile", end='')
logfile = open(logfile_name, 'rb', buffering=0)
# Attempt to poll the log file for 60 sec. to see if all worker threads are launched.
for i in range(200):
time.sleep(0.3)
sys.stdout.write('.')
sys.stdout.flush()
new_data = logfile.read().decode()
if new_data:
log_output.append(new_data)
if check(''.join(log_output)):
failed = False
break
sys.stdout.write('\n')
logfile.close()
if not failed:
print('Worker threads launched successfully')
else:
print('Error in server startup. Dumping logs')
print(''.join(log_output))
return failed
if __name__ == '__main__':
print('\nStarting Development Server')
logfile_name = '/tmp/run-dev-output'
logfile = open(logfile_name, 'wb', buffering=0)
args = ["{}/run-dev.py".format(TOOLS_DIR)]
run_dev = subprocess.Popen(args, stdout=logfile, stderr=subprocess.STDOUT)
failed = check_worker_launch(logfile_name)
if failed:
run_dev.send_signal(signal.SIGINT)
run_dev.wait()
logfile.close()
sys.exit(1)
# In dev. environment, queues are run through Django's autoreload code. The
# autoreload code of Django works by looping over the files associated with
# all the loaded modules. This loop is run after every 1 second. If the
# file is found for the first time by the loop, it is assumed that the
# file is new and is not modified between the time it is loaded and is
# checked by the loop. This assumption is the source of a race condition.
# We can either implement a more sensitive version of the loop or we can
# just allow enough time to the Django loop to touch every file at least
# once.
time.sleep(1.3)
# Removing all data from the server log file.
logfile.truncate(0)
logfile.seek(0)
print("Attempting to modify a file")
subprocess.call(['touch', 'zerver/lib/actions.py'])
failed = check_worker_launch(logfile_name)
run_dev.send_signal(signal.SIGINT)
run_dev.wait()
logfile.close()
if failed:
sys.exit(1)