加入等待继电器释放，加入程序停止执行时释放所有资源

config.yml

@@ -11,7 +11,7 @@ log:
     maxAge: 30
     compress: true
 mqtt:
-  url: mqtt://58.144.199.46:1883
+  url: mqtt://wushan-mqtt.chaoshengshuzi.com:1883
 aliyun:
   accessKeyID:
   accessKeySecret:

internal/server.go

@@ -126,7 +126,7 @@ func Run() {
 	if config.C.Relay != "" {
 		r, err = relay.New(config.C.Relay)
 		if err != nil {
-			zap.S().Panicln("继电器连接异常: ", err)
+			zap.S().Errorln("继电器连接异常: ", err)
 		}
 		defer r.Close()
 	}
@@ -179,6 +179,9 @@ func Run() {
 	if e := cm.Disconnect(ctx); e != nil {
 		zap.S().Errorln("断开连接异常", e)
 	}
+	if e := router.Disconnect(ctx); e != nil {
+		zap.S().Errorln("停止所以任务超时", e)
+	}
 
 	zap.S().Infoln("关闭完成")
 }

leaf/leaf.go

@@ -34,8 +34,13 @@ func (c HandlersChain) Last() HandlerFunc {
 }
 
 type Engine struct {
-	mu             sync.RWMutex
-	ctx            context.Context
+	mu      sync.RWMutex
+	queueWg sync.WaitGroup
+
+	ctx       context.Context
+	cancelCtx context.CancelFunc
+	done      chan struct{}
+
 	Handlers       HandlersChain
 	defaultHandler HandlersChain
 	subscriptions  map[string]HandlersChain
@@ -44,8 +49,11 @@ type Engine struct {
 }
 
 func New(ctx context.Context) *Engine {
+	c, cancel := context.WithCancel(ctx)
 	return &Engine{
-		ctx:           ctx,
+		ctx:           c,
+		cancelCtx:     cancel,
+		done:          make(chan struct{}),
 		Handlers:      make(HandlersChain, 0),
 		subscriptions: make(map[string]HandlersChain),
 		aliases:       make(map[uint16]string),
@@ -54,8 +62,11 @@ func New(ctx context.Context) *Engine {
 }
 
 func Default(ctx context.Context) *Engine {
+	c, cancel := context.WithCancel(ctx)
 	engine := &Engine{
-		ctx:           ctx,
+		ctx:           c,
+		cancelCtx:     cancel,
+		done:          make(chan struct{}),
 		Handlers:      make(HandlersChain, 0),
 		subscriptions: make(map[string]HandlersChain),
 		aliases:       make(map[uint16]string),
@@ -108,13 +119,21 @@ func (e *Engine) Route(pb *packets.Publish) {
 	for route, handlers := range e.subscriptions {
 		if match(route, topic) {
 			e.debug.Println("found handler for:", route)
-			go WithLeafContext(e.ctx, m, e, handlers).Next()
+			e.queueWg.Add(1)
+			go func() {
+				defer e.queueWg.Done()
+				WithLeafContext(e.ctx, m, e, handlers).Next()
+			}()
 			handlerCalled = true
 		}
 	}
 
 	if !handlerCalled && e.defaultHandler != nil {
-		go WithLeafContext(e.ctx, m, e, e.defaultHandler).Next()
+		e.queueWg.Add(1)
+		go func() {
+			defer e.queueWg.Done()
+			WithLeafContext(e.ctx, m, e, e.defaultHandler).Next()
+		}()
 	}
 }
 
@@ -134,6 +153,21 @@ func (e *Engine) DefaultHandler(h HandlerFunc) {
 	e.defaultHandler = e.combineHandlers(HandlersChain{h})
 }
 
+func (e *Engine) Disconnect(ctx context.Context) error {
+	go func() {
+		e.queueWg.Wait()
+		close(e.done)
+	}()
+
+	e.cancelCtx()
+	select {
+	case <-e.done: // wait for goroutine to exit
+		return nil
+	case <-ctx.Done():
+		return ctx.Err()
+	}
+}
+
 func (e *Engine) combineHandlers(handlers HandlersChain) HandlersChain {
 	finalSize := len(e.Handlers) + len(handlers)
 	assert1(finalSize < int(abortIndex), "too many handlers")

logger/logger.go

@@ -51,7 +51,7 @@ func InitProLogger(cls *TenCls) {
 	cn := zapcore.NewJSONEncoder(nc)
 
 	// 多个输出
-	mws := zapcore.NewMultiWriteSyncer(zapcore.AddSync(cls), zapcore.AddSync(os.Stdout))
+	mws := zapcore.NewMultiWriteSyncer(zapcore.AddSync(cls), zapcore.AddSync(config.C.Log.File), zapcore.AddSync(os.Stdout))
 
 	// 核心配置
 	core := zapcore.NewCore(cn, mws, level)

pkg/relay/relay.go

@@ -1,9 +1,15 @@
 package relay
 
 import (
+	"context"
+	"errors"
 	"github.com/grid-x/modbus"
 	"go.uber.org/zap"
 	"io"
+	"io/fs"
+	"os"
+	"strings"
+	"time"
 )
 
 type Relay interface {
@@ -56,6 +62,29 @@ func (r *device) Off(num int) error {
 func New(address string) (Relay, error) {
 	zap.S().Infoln("连接继电器: ", address)
 
+	ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
+	defer cancel()
+	a := make(chan struct{})
+	go func() {
+		defer close(a)
+		for {
+			select {
+			case <-ctx.Done():
+				zap.S().Infoln("等待继电器资源释放超时:", address)
+				return
+			case <-time.After(3 * time.Second):
+				_, err := os.OpenFile(address, os.O_RDWR, 0666)
+				var e *fs.PathError
+				if errors.As(err, &e) && strings.Contains(e.Error(), "busy") {
+					zap.S().Infoln("等待继电器资源释放:", address)
+				} else {
+					return
+				}
+			}
+		}
+	}()
+	<-a
+
 	h := modbus.NewRTUClientHandler(address)
 	h.SlaveID = 1
 	h.BaudRate = 9600