Add MusicWorkshop application
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liumangmang
Executable
+299
@@ -0,0 +1,299 @@
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#!/usr/bin/env bash
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set -euo pipefail
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ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
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RUNTIME_DIR="$ROOT_DIR/.dev-runtime"
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BACKEND_PID_FILE="$RUNTIME_DIR/backend.pid"
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FRONTEND_PID_FILE="$RUNTIME_DIR/frontend.pid"
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BACKEND_LOG_FILE="$RUNTIME_DIR/backend.log"
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FRONTEND_LOG_FILE="$RUNTIME_DIR/frontend.log"
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BACKEND_HOST="127.0.0.1"
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BACKEND_PORT="8000"
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FRONTEND_HOST="127.0.0.1"
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FRONTEND_PORT="5173"
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usage() {
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cat <<'EOF'
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Usage: scripts/dev.sh <start|stop|restart|status>
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EOF
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}
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log() {
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printf '[dev] %s\n' "$*"
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}
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fail() {
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printf '[dev] %s\n' "$*" >&2
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exit 1
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}
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ensure_base_requirements() {
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[[ -x "$ROOT_DIR/backend/.venv/bin/uvicorn" ]] || fail "缺少 backend/.venv/bin/uvicorn"
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[[ -f "$ROOT_DIR/frontend/package.json" ]] || fail "缺少 frontend/package.json"
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[[ -d "$ROOT_DIR/frontend/node_modules" ]] || fail "缺少 frontend/node_modules，请先执行前端依赖安装"
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command -v npm >/dev/null 2>&1 || fail "当前环境缺少 npm"
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command -v setsid >/dev/null 2>&1 || fail "当前环境缺少 setsid"
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}
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ensure_runtime_dir() {
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mkdir -p "$RUNTIME_DIR"
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}
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pid_from_file() {
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local pid_file="$1"
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[[ -f "$pid_file" ]] || return 1
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local pid
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pid="$(tr -d '[:space:]' < "$pid_file")"
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[[ -n "$pid" ]] || return 1
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printf '%s\n' "$pid"
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}
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is_pid_running() {
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local pid="$1"
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kill -0 "$pid" 2>/dev/null
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}
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cleanup_stale_pid_file() {
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local service_name="$1"
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local pid_file="$2"
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local announce="${3:-true}"
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if pid="$(pid_from_file "$pid_file" 2>/dev/null)"; then
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if ! is_pid_running "$pid"; then
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rm -f "$pid_file"
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if [[ "$announce" == "true" ]]; then
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log "$service_name PID 文件已陈旧，已自动清理"
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fi
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fi
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elif [[ -f "$pid_file" ]]; then
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rm -f "$pid_file"
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if [[ "$announce" == "true" ]]; then
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log "$service_name PID 文件内容无效，已自动清理"
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fi
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fi
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}
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active_pid_from_file() {
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local pid_file="$1"
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if pid="$(pid_from_file "$pid_file" 2>/dev/null)"; then
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if is_pid_running "$pid"; then
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printf '%s\n' "$pid"
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return 0
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fi
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fi
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return 1
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}
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http_ready() {
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local url="$1"
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"$ROOT_DIR/backend/.venv/bin/python" - "$url" <<'PY'
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import sys
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import urllib.request
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url = sys.argv[1]
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try:
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with urllib.request.urlopen(url, timeout=1) as response:
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status = getattr(response, 'status', 200)
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raise SystemExit(0 if 200 <= status < 400 else 1)
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except Exception:
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raise SystemExit(1)
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PY
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}
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wait_for_service() {
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local service_name="$1"
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local pid_file="$2"
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local health_url="$3"
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local timeout_seconds="${4:-30}"
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local elapsed=0
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while (( elapsed < timeout_seconds )); do
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if http_ready "$health_url"; then
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return 0
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fi
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if ! active_pid_from_file "$pid_file" >/dev/null 2>&1; then
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log "$service_name 在就绪前已退出，请检查日志"
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return 1
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fi
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sleep 1
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elapsed=$((elapsed + 1))
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done
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log "$service_name 在 ${timeout_seconds}s 内未就绪"
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return 1
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}
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start_backend() {
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: > "$BACKEND_LOG_FILE"
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(
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cd "$ROOT_DIR"
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exec setsid "$ROOT_DIR/backend/.venv/bin/uvicorn" \
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backend.app.main:app \
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--app-dir . \
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--host "$BACKEND_HOST" \
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--port "$BACKEND_PORT" \
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--reload
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) >>"$BACKEND_LOG_FILE" 2>&1 &
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echo "$!" > "$BACKEND_PID_FILE"
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}
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start_frontend() {
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: > "$FRONTEND_LOG_FILE"
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(
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cd "$ROOT_DIR/frontend"
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exec setsid npm run dev -- --host "$FRONTEND_HOST" --port "$FRONTEND_PORT"
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) >>"$FRONTEND_LOG_FILE" 2>&1 &
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echo "$!" > "$FRONTEND_PID_FILE"
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}
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stop_service() {
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local service_name="$1"
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local pid_file="$2"
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cleanup_stale_pid_file "$service_name" "$pid_file" false
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if ! pid="$(active_pid_from_file "$pid_file" 2>/dev/null)"; then
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log "$service_name 未运行"
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return 0
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fi
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log "停止 $service_name (PID $pid)"
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kill -TERM -- "-$pid" 2>/dev/null || kill -TERM "$pid" 2>/dev/null || true
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local attempt=0
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while (( attempt < 10 )); do
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if ! is_pid_running "$pid"; then
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rm -f "$pid_file"
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log "$service_name 已停止"
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return 0
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fi
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sleep 1
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attempt=$((attempt + 1))
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done
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log "$service_name 未在预期时间内退出，强制结束"
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kill -KILL -- "-$pid" 2>/dev/null || kill -KILL "$pid" 2>/dev/null || true
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rm -f "$pid_file"
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}
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show_service_status() {
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local service_name="$1"
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local pid_file="$2"
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local port="$3"
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local log_file="$4"
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if pid="$(active_pid_from_file "$pid_file" 2>/dev/null)"; then
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printf '%s: running (PID %s, port %s, log %s)\n' "$service_name" "$pid" "$port" "$log_file"
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return 0
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fi
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if [[ -f "$pid_file" ]]; then
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rm -f "$pid_file"
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printf '%s: stale PID file removed, not running\n' "$service_name"
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return 0
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fi
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printf '%s: not running\n' "$service_name"
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}
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start_all() {
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ensure_base_requirements
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ensure_runtime_dir
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cleanup_stale_pid_file "backend" "$BACKEND_PID_FILE"
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cleanup_stale_pid_file "frontend" "$FRONTEND_PID_FILE"
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if active_pid_from_file "$BACKEND_PID_FILE" >/dev/null 2>&1 || active_pid_from_file "$FRONTEND_PID_FILE" >/dev/null 2>&1; then
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log "检测到已有开发服务在运行，请先执行 stop 或 restart"
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show_service_status "backend" "$BACKEND_PID_FILE" "$BACKEND_PORT" "$BACKEND_LOG_FILE"
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show_service_status "frontend" "$FRONTEND_PID_FILE" "$FRONTEND_PORT" "$FRONTEND_LOG_FILE"
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return 0
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fi
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log "启动 backend..."
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start_backend
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if ! wait_for_service "backend" "$BACKEND_PID_FILE" "http://$BACKEND_HOST:$BACKEND_PORT/api/health" 30; then
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stop_service "backend" "$BACKEND_PID_FILE" >/dev/null 2>&1 || true
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fail "backend 启动失败，请查看 $BACKEND_LOG_FILE"
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fi
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log "启动 frontend..."
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start_frontend
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if ! wait_for_service "frontend" "$FRONTEND_PID_FILE" "http://$FRONTEND_HOST:$FRONTEND_PORT" 30; then
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stop_service "frontend" "$FRONTEND_PID_FILE" >/dev/null 2>&1 || true
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stop_service "backend" "$BACKEND_PID_FILE" >/dev/null 2>&1 || true
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fail "frontend 启动失败，请查看 $FRONTEND_LOG_FILE"
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fi
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log "开发环境已启动"
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show_service_status "backend" "$BACKEND_PID_FILE" "$BACKEND_PORT" "$BACKEND_LOG_FILE"
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show_service_status "frontend" "$FRONTEND_PID_FILE" "$FRONTEND_PORT" "$FRONTEND_LOG_FILE"
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}
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stop_all() {
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stop_service "frontend" "$FRONTEND_PID_FILE"
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stop_service "backend" "$BACKEND_PID_FILE"
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}
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status_all() {
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show_service_status "backend" "$BACKEND_PID_FILE" "$BACKEND_PORT" "$BACKEND_LOG_FILE"
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show_service_status "frontend" "$FRONTEND_PID_FILE" "$FRONTEND_PORT" "$FRONTEND_LOG_FILE"
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}
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main() {
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local command="${1:-}"
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case "$command" in
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start)
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start_all
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;;
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stop)
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stop_all
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;;
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restart)
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stop_all
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start_all
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;;
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status)
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status_all
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;;
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*)
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usage
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exit 1
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;;
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esac
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}
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main "$@"
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