103 lines
3.3 KiB
Bash
Executable file
103 lines
3.3 KiB
Bash
Executable file
#!/bin/bash
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source /opt/app-root/etc/generate_container_user
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set -e
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function is_gunicorn_installed() {
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hash gunicorn &>/dev/null
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}
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function is_django_installed() {
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python -c "import django" &>/dev/null
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}
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function should_migrate() {
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is_django_installed && [[ -z "$DISABLE_MIGRATE" ]]
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}
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# Guess the number of workers according to the number of cores
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function get_default_web_concurrency() {
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limit_vars=$(cgroup-limits)
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local $limit_vars
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if [ -z "${NUMBER_OF_CORES:-}" ]; then
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echo 1
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return
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fi
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local max=$((NUMBER_OF_CORES*2))
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# Require at least 43 MiB and additional 40 MiB for every worker
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local default=$(((${MEMORY_LIMIT_IN_BYTES:-MAX_MEMORY_LIMIT_IN_BYTES}/1024/1024 - 43) / 40))
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default=$((default > max ? max : default))
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default=$((default < 1 ? 1 : default))
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echo $default
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}
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app_script_check="${APP_SCRIPT-}"
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APP_SCRIPT="${APP_SCRIPT-app.sh}"
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if [[ -f "$APP_SCRIPT" ]]; then
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echo "---> Running application from script ($APP_SCRIPT) ..."
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if [[ "$APP_SCRIPT" != /* ]]; then
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APP_SCRIPT="./$APP_SCRIPT"
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fi
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exec "$APP_SCRIPT"
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else
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test -n "$app_script_check" && (>&2 echo "ERROR: file '$app_script_check' not found.") && exit 1
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fi
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app_file_check="${APP_FILE-}"
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APP_FILE="${APP_FILE-app.py}"
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if [[ -f "$APP_FILE" ]]; then
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echo "---> Running application from Python script ($APP_FILE) ..."
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exec python "$APP_FILE"
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else
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test -n "$app_file_check" && (>&2 echo "ERROR: file '$app_file_check' not found.") && exit 1
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fi
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APP_HOME=${APP_HOME:-.}
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# Look for 'manage.py' in the directory specified by APP_HOME, or the current direcotry
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manage_file=$APP_HOME/manage.py
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if should_migrate; then
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if [[ -f "$manage_file" ]]; then
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echo "---> Migrating database ..."
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python "$manage_file" migrate --noinput
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else
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echo "WARNING: seems that you're using Django, but we could not find a 'manage.py' file."
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echo "Skipped 'python manage.py migrate'."
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fi
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fi
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if is_gunicorn_installed; then
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if [[ -z "$APP_MODULE" ]]; then
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# Look only in the directory specified by APP_HOME, or the current directory
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# replace all "/" with ".", remove leading "." and ".py" suffix
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APP_MODULE=$(find $APP_HOME -maxdepth 1 -type f -name 'wsgi.py' | sed 's:/:.:g;s:^\.\+::;s:\.py$::')
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fi
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if [[ -z "$APP_MODULE" && -f setup.py ]]; then
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APP_MODULE="$(python setup.py --name)"
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fi
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if [[ "$APP_MODULE" ]]; then
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export WEB_CONCURRENCY=${WEB_CONCURRENCY:-$(get_default_web_concurrency)}
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echo "---> Serving application with gunicorn ($APP_MODULE) ..."
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exec gunicorn "$APP_MODULE" --bind=0.0.0.0:8080 --access-logfile=- --config "$APP_CONFIG"
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fi
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fi
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if is_django_installed; then
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if [[ -f "$manage_file" ]]; then
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echo "---> Serving application with 'manage.py runserver' ..."
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echo "WARNING: this is NOT a recommended way to run you application in production!"
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echo "Consider using gunicorn or some other production web server."
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exec python "$manage_file" runserver 0.0.0.0:8080
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else
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echo "WARNING: seems that you're using Django, but we could not find a 'manage.py' file."
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echo "Skipped 'python manage.py runserver'."
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fi
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fi
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>&2 echo "ERROR: don't know how to run your application."
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>&2 echo "Please set either APP_MODULE, APP_FILE or APP_SCRIPT environment variables, or create a file 'app.py' to launch your application."
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exit 1
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