#! /usr/bin/env bash

set -e

# Let the DB start
python /app/app/backend_pre_start.py


LOG_LEVEL=info
# Uncomment to squeeze performance in exchange of logs
# LOG_LEVEL=warning

# Get CPU cores
CORES=$(nproc --all)
# Read env var WORKERS_PER_CORE with default of 2
WORKERS_PER_CORE_PERCENT=${WORKERS_PER_CORE_PERCENT:-200}
# Compute DEFAULT_WEB_CONCURRENCY as CPU cores * workers per core
DEFAULT_WEB_CONCURRENCY=$(( ($CORES * $WORKERS_PER_CORE_PERCENT) / 100 ))
# Minimum default of workers is 1
if [ "$DEFAULT_WEB_CONCURRENCY" -lt 1 ]; then
    DEFAULT_WEB_CONCURRENCY=1
fi
# Read WEB_CONCURRENCY env var, with default of computed value
WEB_CONCURRENCY=${WEB_CONCURRENCY:-$DEFAULT_WEB_CONCURRENCY}
echo "Using these many workers: $WEB_CONCURRENCY"

gunicorn -k uvicorn.workers.UvicornWorker --log-level $LOG_LEVEL app.main:app --bind 0.0.0.0:80