From acc2df7fea54acd4c184a40a26c524fe0ce226e4 Mon Sep 17 00:00:00 2001
From: GoEdgeLab <goedgecloud@gmail.com>
Date: Wed, 24 Feb 2021 11:01:06 +0800
Subject: [PATCH] =?UTF-8?q?=E8=87=AA=E5=8A=A8=E5=90=8C=E6=AD=A5API?=
 =?UTF-8?q?=E8=8A=82=E7=82=B9=E9=85=8D=E7=BD=AE?=
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---
 internal/nodes/task_sync_api_nodes.go | 97 +++++++++++++++++++++++++++
 internal/rpc/rpc_client.go            |  8 +++
 2 files changed, 105 insertions(+)
 create mode 100644 internal/nodes/task_sync_api_nodes.go

diff --git a/internal/nodes/task_sync_api_nodes.go b/internal/nodes/task_sync_api_nodes.go
new file mode 100644
index 0000000..81bc55d
--- /dev/null
+++ b/internal/nodes/task_sync_api_nodes.go
@@ -0,0 +1,97 @@
+package nodes
+
+import (
+	"github.com/TeaOSLab/EdgeCommon/pkg/rpc/pb"
+	"github.com/TeaOSLab/EdgeNode/internal/configs"
+	"github.com/TeaOSLab/EdgeNode/internal/events"
+	"github.com/TeaOSLab/EdgeNode/internal/remotelogs"
+	"github.com/TeaOSLab/EdgeNode/internal/rpc"
+	"github.com/iwind/TeaGo/Tea"
+	"github.com/iwind/TeaGo/logs"
+	"sort"
+	"strings"
+	"time"
+)
+
+func init() {
+	events.On(events.EventStart, func() {
+		task := NewSyncAPINodesTask()
+		go task.Start()
+	})
+}
+
+// API节点同步任务
+type SyncAPINodesTask struct {
+}
+
+func NewSyncAPINodesTask() *SyncAPINodesTask {
+	return &SyncAPINodesTask{}
+}
+
+func (this *SyncAPINodesTask) Start() {
+	ticker := time.NewTicker(5 * time.Minute)
+	if Tea.IsTesting() {
+		// 快速测试
+		ticker = time.NewTicker(1 * time.Minute)
+	}
+	events.On(events.EventQuit, func() {
+		remotelogs.Println("SYNC_API_NODES_TASK", "quit task")
+		ticker.Stop()
+	})
+	for range ticker.C {
+		err := this.Loop()
+		if err != nil {
+			logs.Println("[TASK][SYNC_API_NODES_TASK]" + err.Error())
+		}
+	}
+}
+
+func (this *SyncAPINodesTask) Loop() error {
+	// 获取所有可用的节点
+	rpcClient, err := rpc.SharedRPC()
+	if err != nil {
+		return err
+	}
+	resp, err := rpcClient.APINodeRPC().FindAllEnabledAPINodes(rpcClient.Context(), &pb.FindAllEnabledAPINodesRequest{})
+	if err != nil {
+		return err
+	}
+
+	newEndpoints := []string{}
+	for _, node := range resp.Nodes {
+		if !node.IsOn {
+			continue
+		}
+		newEndpoints = append(newEndpoints, node.AccessAddrs...)
+	}
+
+	// 和现有的对比
+	config, err := configs.LoadAPIConfig()
+	if err != nil {
+		return err
+	}
+	if this.isSame(newEndpoints, config.RPC.Endpoints) {
+		return nil
+	}
+
+	// 修改RPC对象配置
+	config.RPC.Endpoints = newEndpoints
+	err = rpcClient.UpdateConfig(config)
+	if err != nil {
+		return err
+	}
+
+	// 保存到文件
+	err = config.WriteFile(Tea.ConfigFile("api.yaml"))
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (this *SyncAPINodesTask) isSame(endpoints1 []string, endpoints2 []string) bool {
+	sort.Strings(endpoints1)
+	sort.Strings(endpoints2)
+	return strings.Join(endpoints1, "&") == strings.Join(endpoints2, "&")
+}
diff --git a/internal/rpc/rpc_client.go b/internal/rpc/rpc_client.go
index 57c56bb..47462de 100644
--- a/internal/rpc/rpc_client.go
+++ b/internal/rpc/rpc_client.go
@@ -158,6 +158,12 @@ func (this *RPCClient) Close() {
 	}
 }
 
+// 修改配置
+func (this *RPCClient) UpdateConfig(config *configs.APIConfig) error {
+	this.apiConfig = config
+	return this.init()
+}
+
 // 初始化
 func (this *RPCClient) init() error {
 	// 重新连接
@@ -185,6 +191,8 @@ func (this *RPCClient) init() error {
 	if len(conns) == 0 {
 		return errors.New("[RPC]no available endpoints")
 	}
+
+	// 这里不需要加锁，防止和pickConn()冲突
 	this.conns = conns
 	return nil
 }