start_service_production.sh

#!/bin/bash

# if ran manually execute "export_env_vars.sh"

export OCR_SERVICE_HOST="${OCR_SERVICE_HOST:-0.0.0.0}"
export OCR_SERVICE_PORT="${OCR_SERVICE_PORT:-8090}"
export OCR_SERVICE_WORKER_CLASS="${OCR_SERVICE_WORKER_CLASS:-sync}"
export OCR_WEB_SERVICE_WORKERS="${OCR_WEB_SERVICE_WORKERS:-1}"
export OCR_SERVICE_LOG_LEVEL="${OCR_SERVICE_LOG_LEVEL:-20}"
export OCR_SERVICE_GUNICORN_LOG_FILE_PATH="${OCR_SERVICE_GUNICORN_LOG_FILE_PATH:--}"
export OCR_SERVICE_GUNICORN_LOG_LEVEL="${OCR_SERVICE_GUNICORN_LOG_LEVEL:-info}"
export OCR_SERVICE_GUNICORN_MAX_REQUESTS_JITTER="${OCR_SERVICE_GUNICORN_MAX_REQUESTS_JITTER:-5000}"
export OCR_SERVICE_GUNICORN_MAX_REQUESTS="${OCR_SERVICE_GUNICORN_MAX_REQUESTS:-50000}"
export OCR_SERVICE_GUNICORN_TIMEOUT="${OCR_SERVICE_GUNICORN_TIMEOUT:-300}"
export OCR_SERVICE_GUNICORN_GRACEFUL_TIMEOUT="${OCR_SERVICE_GUNICORN_GRACEFUL_TIMEOUT:-30}"

# start the OCR_SERVICE
echo "Starting up OCR app using gunicorn OCR_SERVICE ..."
echo "====================================== OCR Service Configuration =============================="
echo "OCR_SERVICE_HOST: $OCR_SERVICE_HOST"
echo "OCR_SERVICE_PORT: $OCR_SERVICE_PORT"
echo "OCR_SERVICE_WORKER_CLASS: $OCR_SERVICE_WORKER_CLASS"
echo "OCR_WEB_SERVICE_WORKERS: $OCR_WEB_SERVICE_WORKERS"
echo "OCR_SERVICE_LOG_LEVEL: $OCR_SERVICE_LOG_LEVEL"
echo "OCR_SERVICE_GUNICORN_LOG_FILE_PATH: $OCR_SERVICE_GUNICORN_LOG_FILE_PATH"
echo "OCR_SERVICE_GUNICORN_LOG_LEVEL: $OCR_SERVICE_GUNICORN_LOG_LEVEL"
echo "OCR_SERVICE_GUNICORN_MAX_REQUESTS_JITTER: $OCR_SERVICE_GUNICORN_MAX_REQUESTS_JITTER"
echo "OCR_SERVICE_GUNICORN_MAX_REQUESTS: $OCR_SERVICE_GUNICORN_MAX_REQUESTS"
echo "OCR_SERVICE_GUNICORN_TIMEOUT: $OCR_SERVICE_GUNICORN_TIMEOUT"
echo "OCR_SERVICE_GUNICORN_GRACEFUL_TIMEOUT: $OCR_SERVICE_GUNICORN_GRACEFUL_TIMEOUT"
echo "==============================================================================================="

# prefer the venv if available (in docker container or virtual environment)
VIRTUAL_ENV=${VIRTUAL_ENV:-/opt/venv}
if [[ -x "$VIRTUAL_ENV/bin/gunicorn" ]]; then
  export VIRTUAL_ENV
  export PATH="$VIRTUAL_ENV/bin:$PATH"
  python_cmd="$VIRTUAL_ENV/bin/python"
  gunicorn_cmd=("$VIRTUAL_ENV/bin/gunicorn")
else
  # Fallback to system python if venv missing
  python_cmd=python3
  if command -v python3.12 &>/dev/null; then
    python_cmd=python3.12
  elif command -v python3.11 &>/dev/null; then
    python_cmd=python3.11
  elif command -v python3.13 &>/dev/null; then
    python_cmd=python3.13
  fi
  gunicorn_cmd=("$python_cmd" "-m" "gunicorn")
fi

exec "${gunicorn_cmd[@]}" wsgi:app --worker-class "$OCR_SERVICE_WORKER_CLASS" \
                                   --bind "$OCR_SERVICE_HOST:$OCR_SERVICE_PORT" \
                                   --threads "1" \
                                   --workers "$OCR_WEB_SERVICE_WORKERS" \
                                   --access-logfile "$OCR_SERVICE_GUNICORN_LOG_FILE_PATH" \
                                   --log-level "$OCR_SERVICE_GUNICORN_LOG_LEVEL" \
                                   --max-requests "$OCR_SERVICE_GUNICORN_MAX_REQUESTS" \
                                   --max-requests-jitter "$OCR_SERVICE_GUNICORN_MAX_REQUESTS_JITTER" \
                                   --timeout "$OCR_SERVICE_GUNICORN_TIMEOUT" \
                                   --graceful-timeout "$OCR_SERVICE_GUNICORN_GRACEFUL_TIMEOUT"