| #!/bin/sh |
| set -eu |
|
|
| : "${SUPERVISORD_BIN:=/usr/bin/supervisord}" |
| : "${SUPERVISOR_CONF_TEMPLATE:=/etc/supervisord.conf.template}" |
| : "${APP_BINARY_PATH:=/app/app}" |
| : "${RUNTIME_DIR:=/tmp/runtime}" |
| : "${SUPERVISOR_CONF:=/etc/supervisord.conf}" |
| : "${SUPERVISOR_PROGRAM_NAME:=app}" |
| : "${OPEN_FILE_LIMIT:=65535}" |
|
|
| export RUNTIME_DIR |
|
|
| shell_quote() { |
| printf "'%s'" "$(printf '%s' "$1" | sed "s/'/'\"'\"'/g")" |
| } |
|
|
| escape_sed_replacement() { |
| printf '%s' "$1" | sed 's/[\/&]/\\&/g' |
| } |
|
|
| write_supervisord_conf() { |
| mkdir -p "$(dirname "$SUPERVISOR_CONF")" |
| app_program_name=$(escape_sed_replacement "$SUPERVISOR_PROGRAM_NAME") |
|
|
| sed \ |
| -e "s/__APP_PROGRAM__/$app_program_name/g" \ |
| "$SUPERVISOR_CONF_TEMPLATE" > "$SUPERVISOR_CONF" |
| } |
|
|
| write_run_app_script() { |
| run_app_script="$RUNTIME_DIR/run-app.sh" |
|
|
| { |
| printf '#!/bin/sh\n' |
| printf 'set -eu\n' |
| printf 'exec "%s"' "$APP_BINARY_PATH" |
| for arg in "$@"; do |
| printf ' %s' "$(shell_quote "$arg")" |
| done |
| printf '\n' |
| } > "$run_app_script" |
|
|
| chmod +x "$run_app_script" |
| } |
|
|
| prepare_runtime_environment() { |
| ulimit -n "$OPEN_FILE_LIMIT" |
| mkdir -p "$RUNTIME_DIR" |
| rm -f "$RUNTIME_DIR/supervisor.sock" "$RUNTIME_DIR/supervisord.pid" |
| } |
|
|
| validate_app_binary_or_exit() { |
| if [ ! -x "$APP_BINARY_PATH" ]; then |
| echo "错误: APP_BINARY_PATH 指向的文件不存在或不可执行: $APP_BINARY_PATH" >&2 |
| exit 1 |
| fi |
| } |
|
|
| start_supervisord() { |
| exec "$SUPERVISORD_BIN" -c "$SUPERVISOR_CONF" |
| } |
|
|
| main() { |
| prepare_runtime_environment |
| validate_app_binary_or_exit |
| write_supervisord_conf |
| write_run_app_script "$@" |
| start_supervisord |
| } |
|
|
| main "$@" |
|
|
