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import json
import multiprocessing
import os
workers_per_core_str = os.getenv("WORKERS_PER_CORE", "1")
web_concurrency_str = os.getenv("WEB_CONCURRENCY", None)
host = os.getenv("HOST", "unix:/tmp/gunicorn.sock")
port = os.getenv("PORT", "80")
use_loglevel = os.getenv("LOG_LEVEL", "info")
use_bind = host if "unix" in host else f"{host}:{port}"
cores = multiprocessing.cpu_count()
workers_per_core = float(workers_per_core_str)
default_web_concurrency = workers_per_core * cores
if web_concurrency_str:
web_concurrency = int(web_concurrency_str)
assert web_concurrency > 0
else:
web_concurrency = max(int(default_web_concurrency), 2)
# Gunicorn config variables
loglevel = use_loglevel
workers = web_concurrency
bind = use_bind
keepalive = 120
errorlog = "-"
# For debugging and testing
log_data = {
"loglevel": loglevel,
"workers": workers,
"bind": bind,
"worker-tmp-dir": "/dev/shm",
# Additional, non-gunicorn variables
"workers_per_core": workers_per_core,
"host": host,
"port": port,
}
print(json.dumps(log_data))