优化源站调度

internal/nodes/http_request_reverse_proxy.go

@@ -160,6 +160,9 @@ func (this *HTTPRequest) doReverseProxy() {
 		httpErr, ok := err.(*url.Error)
 		if !ok || httpErr.Err != context.Canceled {
 			// TODO 如果超过最大失败次数，则下线
+			SharedOriginStateManager.Fail(origin, this.reverseProxy, func() {
+				this.reverseProxy.ResetScheduling()
+			})
 
 			this.write502(err)
 			remotelogs.Warn("HTTP_REQUEST_REVERSE_PROXY", this.RawReq.URL.String()+"': "+err.Error())
@@ -183,6 +186,11 @@ func (this *HTTPRequest) doReverseProxy() {
 		}
 		return
 	}
+	if !origin.IsOk {
+		SharedOriginStateManager.Success(origin, func() {
+			this.reverseProxy.ResetScheduling()
+		})
+	}
 
 	// WAF对出站进行检查
 	if this.web.FirewallRef != nil && this.web.FirewallRef.IsOn {

internal/nodes/origin_state.go

@@ -0,0 +1,12 @@
+// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package nodes
+
+import "github.com/TeaOSLab/EdgeCommon/pkg/serverconfigs"
+
+type OriginState struct {
+	CountFails   int64
+	UpdatedAt    int64
+	Config       *serverconfigs.OriginConfig
+	ReverseProxy *serverconfigs.ReverseProxyConfig
+}

internal/nodes/origin_state_manager.go

@@ -0,0 +1,172 @@
+// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package nodes
+
+import (
+	"github.com/TeaOSLab/EdgeCommon/pkg/serverconfigs"
+	"github.com/TeaOSLab/EdgeNode/internal/events"
+	"github.com/TeaOSLab/EdgeNode/internal/remotelogs"
+	"github.com/iwind/TeaGo/Tea"
+	"sync"
+	"time"
+)
+
+var SharedOriginStateManager = NewOriginStateManager()
+
+func init() {
+	events.On(events.EventLoaded, func() {
+		go SharedOriginStateManager.Start()
+	})
+}
+
+// OriginStateManager 源站状态管理
+type OriginStateManager struct {
+	stateMap map[int64]*OriginState // originId => *OriginState
+
+	ticker *time.Ticker
+	locker sync.RWMutex
+}
+
+// NewOriginStateManager 获取新管理对象
+func NewOriginStateManager() *OriginStateManager {
+	return &OriginStateManager{
+		stateMap: map[int64]*OriginState{},
+		ticker:   time.NewTicker(60 * time.Second),
+	}
+}
+
+// Start 启动
+func (this *OriginStateManager) Start() {
+	events.On(events.EventReload, func() {
+		this.locker.Lock()
+		this.stateMap = map[int64]*OriginState{}
+		this.locker.Unlock()
+	})
+
+	if Tea.IsTesting() {
+		this.ticker = time.NewTicker(10 * time.Second)
+	}
+	for range this.ticker.C {
+		err := this.Loop()
+		if err != nil {
+			remotelogs.Error("ORIGIN_MANAGER", err.Error())
+		}
+	}
+}
+
+// Loop 单次循环检查
+func (this *OriginStateManager) Loop() error {
+	if sharedNodeConfig == nil {
+		return nil
+	}
+
+	var currentStates = []*OriginState{}
+	this.locker.Lock()
+	for originId, state := range this.stateMap {
+		// 检查Origin是否正在使用
+		config := sharedNodeConfig.FindOrigin(originId)
+		if config == nil || !config.IsOn {
+			delete(this.stateMap, originId)
+			continue
+		}
+		state.Config = config
+		currentStates = append(currentStates, state)
+	}
+	this.locker.Unlock()
+
+	if len(currentStates) == 0 {
+		return nil
+	}
+
+	var count = len(currentStates)
+	wg := &sync.WaitGroup{}
+	wg.Add(count)
+	for _, state := range currentStates {
+		go func(state *OriginState) {
+			defer wg.Done()
+			conn, err := OriginConnect(state.Config, "")
+			if err == nil {
+				_ = conn.Close()
+
+				// 已经恢复正常
+				this.locker.Lock()
+				state.Config.IsOk = true
+				delete(this.stateMap, state.Config.Id)
+				this.locker.Unlock()
+
+				var reverseProxy = state.ReverseProxy
+				if reverseProxy != nil {
+					reverseProxy.ResetScheduling()
+				}
+			}
+		}(state)
+	}
+	wg.Wait()
+
+	return nil
+}
+
+// Fail 添加失败的源站
+func (this *OriginStateManager) Fail(origin *serverconfigs.OriginConfig, reverseProxy *serverconfigs.ReverseProxyConfig, callback func()) {
+	if origin == nil {
+		return
+	}
+	this.locker.Lock()
+	state, ok := this.stateMap[origin.Id]
+	var timestamp = time.Now().Unix()
+	if ok {
+		if state.UpdatedAt < timestamp-300 { // N 分钟之后重新计数
+			state.CountFails = 0
+			state.Config.IsOk = true
+		}
+
+		state.CountFails++
+		state.Config = origin
+		state.ReverseProxy = reverseProxy
+		state.UpdatedAt = timestamp
+
+		if origin.IsOk {
+			origin.IsOk = state.CountFails > 5 // 超过 N 次之后认为是异常
+
+			if !origin.IsOk {
+				if callback != nil {
+					callback()
+				}
+			}
+		}
+	} else {
+		this.stateMap[origin.Id] = &OriginState{
+			CountFails:   1,
+			Config:       origin,
+			ReverseProxy: reverseProxy,
+			UpdatedAt:    timestamp,
+		}
+		origin.IsOk = true
+	}
+	this.locker.Unlock()
+}
+
+// Success 添加成功的源站
+func (this *OriginStateManager) Success(origin *serverconfigs.OriginConfig, callback func()) {
+	if origin == nil {
+		return
+	}
+	if !origin.IsOk {
+		if callback != nil {
+			callback()
+		}
+	}
+	origin.IsOk = true
+	this.locker.Lock()
+	delete(this.stateMap, origin.Id)
+	this.locker.Unlock()
+}
+
+// IsAvailable 检查是否正常
+func (this *OriginStateManager) IsAvailable(originId int64) bool {
+	this.locker.RLock()
+	_, ok := this.stateMap[originId]
+	this.locker.RUnlock()
+
+	return !ok
+}

internal/nodes/origin_state_manager_test.go

@@ -0,0 +1,15 @@
+// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package nodes
+
+import "testing"
+
+func TestOriginManager_Loop(t *testing.T) {
+	var manager = NewOriginStateManager()
+	err := manager.Loop()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	t.Log(manager.stateMap)
+}

internal/nodes/origin_utils.go

@@ -16,41 +16,44 @@ func OriginConnect(origin *serverconfigs.OriginConfig, remoteAddr string) (net.C
 	}
 
 	// 支持TOA的连接
-	toaConfig := sharedTOAManager.Config()
-	if toaConfig != nil && toaConfig.IsOn {
-		retries := 3
-		for i := 1; i <= retries; i++ {
-			port := int(toaConfig.RandLocalPort())
-			err := sharedTOAManager.SendMsg("add:" + strconv.Itoa(port) + ":" + remoteAddr)
-			if err != nil {
-				remotelogs.Error("TOA", "add failed: "+err.Error())
-			} else {
-				dialer := net.Dialer{
-					Timeout: origin.ConnTimeoutDuration(),
-					LocalAddr: &net.TCPAddr{
-						Port: port,
-					},
-				}
-				var conn net.Conn
-				switch origin.Addr.Protocol {
-				case "", serverconfigs.ProtocolTCP, serverconfigs.ProtocolHTTP:
-					// TODO 支持TCP4/TCP6
-					// TODO 支持指定特定网卡
-					// TODO Addr支持端口范围，如果有多个端口时，随机一个端口使用
-					conn, err = dialer.Dial("tcp", origin.Addr.Host+":"+origin.Addr.PortRange)
-				case serverconfigs.ProtocolTLS, serverconfigs.ProtocolHTTPS:
-					// TODO 支持TCP4/TCP6
-					// TODO 支持指定特定网卡
-					// TODO Addr支持端口范围，如果有多个端口时，随机一个端口使用
-					// TODO 支持使用证书
-					conn, err = tls.DialWithDialer(&dialer, "tcp", origin.Addr.Host+":"+origin.Addr.PortRange, &tls.Config{
-						InsecureSkipVerify: true,
-					})
-				}
+	// 这个条件很重要，如果没有传递remoteAddr，表示不使用TOA
+	if len(remoteAddr) > 0 {
+		toaConfig := sharedTOAManager.Config()
+		if toaConfig != nil && toaConfig.IsOn {
+			retries := 3
+			for i := 1; i <= retries; i++ {
+				port := int(toaConfig.RandLocalPort())
+				err := sharedTOAManager.SendMsg("add:" + strconv.Itoa(port) + ":" + remoteAddr)
+				if err != nil {
+					remotelogs.Error("TOA", "add failed: "+err.Error())
+				} else {
+					dialer := net.Dialer{
+						Timeout: origin.ConnTimeoutDuration(),
+						LocalAddr: &net.TCPAddr{
+							Port: port,
+						},
+					}
+					var conn net.Conn
+					switch origin.Addr.Protocol {
+					case "", serverconfigs.ProtocolTCP, serverconfigs.ProtocolHTTP:
+						// TODO 支持TCP4/TCP6
+						// TODO 支持指定特定网卡
+						// TODO Addr支持端口范围，如果有多个端口时，随机一个端口使用
+						conn, err = dialer.Dial("tcp", origin.Addr.Host+":"+origin.Addr.PortRange)
+					case serverconfigs.ProtocolTLS, serverconfigs.ProtocolHTTPS:
+						// TODO 支持TCP4/TCP6
+						// TODO 支持指定特定网卡
+						// TODO Addr支持端口范围，如果有多个端口时，随机一个端口使用
+						// TODO 支持使用证书
+						conn, err = tls.DialWithDialer(&dialer, "tcp", origin.Addr.Host+":"+origin.Addr.PortRange, &tls.Config{
+							InsecureSkipVerify: true,
+						})
+					}
 
-				// TODO 需要在合适的时机删除TOA记录
-				if err == nil || i == retries {
-					return conn, err
+					// TODO 需要在合适的时机删除TOA记录
+					if err == nil || i == retries {
+						return conn, err
+					}
 				}
 			}
 		}