文章目录

写在前面

和上篇文章类似，这次我们完成具体功能部分。

源码地址：

https://github.com/CocaineCong/gRPC-todoList

1. 备忘录部分

1.1 proto模块定义

taskModel.proto

syntax="proto3";
package pb;
option go_package = "/internal/service;service";

message TaskModel {
    // @inject_tag: json:"favorite_id"
    uint32 TaskID=1;
    // @inject_tag: json:"user_id"
    uint32 UserID=2;
    // @inject_tag: json:"status"
    uint32 Status=3;
    // @inject_tag: json:"title"
    string Title=4;
    // @inject_tag: json:"content"
    string Content=5;
    // @inject_tag: json:"start_time"
    uint32 StartTime=6;
    // @inject_tag: json:"end_time"
    uint32 EndTime=7;
}

taskService.proto

syntax="proto3";
package pb;
import "taskModels.proto";
option go_package = "/internal/service;service";

message TaskRequest{
    uint32 TaskID=1;
    uint32 UserID=2;
    uint32 Status=3;
    string Title=4;
    string Content=5;
    uint32 StartTime=6;
    uint32 EndTime=7;
}

message TasksDetailResponse{
  repeated TaskModel TaskDetail=1;
  uint32 Code=2;
}

message CommonResponse{
    uint32 Code=1;
    string Msg=2;
    string Data=3;
}

service TaskService{
  rpc TaskCreate(TaskRequest) returns(CommonResponse);
  rpc TaskUpdate(TaskRequest) returns(CommonResponse);
  rpc TaskShow(TaskRequest) returns(TasksDetailResponse);
  rpc TaskDelete(TaskRequest) returns(CommonResponse);
}

获取所有生成pb.go文件

protoc -I internal/service/pb internal/service/pb/*.proto --go_out=plugins=grpc:.

1.2 数据库结构定义

模型定义

type Task struct {
TaskID    uint   `gorm:"primarykey"` // 收藏夹id
UserID    uint   `gorm:"index"`      // 用户id
Status    int    `gorm:"default:0"`
Title   string
Content   string `gorm:"type:longtext"`
StartTime int64
EndTime   int64
}

展示所有的任务

func (*Task) Show (req *service.TaskRequest)(taskList []Task,err error) {
err = DB.Model(Task{}).Where("user_id=?", req.UserID).Find(&taskList).Error
if err != nil {
return taskList, err
}
return taskList, nil
}

创建备忘录

func (*Task) Create (req *service.TaskRequest) error {
task := Task{
UserID: uint(req.UserID),
Title : req.Title,
Content : req.Content,
Status : int(req.Status),
StartTime : int64(req.StartTime),
EndTime : int64(req.EndTime),
}
if err := DB.Create(&task).Error; err != nil {
util.LogrusObj.Error("Insert Task Error:" + err.Error())
return err
}
return nil
}

删除备忘录

func (*Task) Delete(req *service.TaskRequest) error {
err := DB.Where("task_id=?", req.TaskID).Delete(Task{}).Error
return err
}

更新

func (*Task) Update(req *service.TaskRequest) error {
t := Task{}
err := DB.Where("task_id=?", req.TaskID).First(&t).Error
if err != nil {
return err
}
t.Title = req.Title
t.Content = req.Content
t.Status = int(req.Status)
t.StartTime = int64(req.StartTime)
t.EndTime = int64(req.EndTime)
err = DB.Save(&t).Error
return err
}

1.3 接入ETCD

ETCD服务初始化

etcdAddress := []string{viper.GetString("etcd.address")}
etcdRegister := discovery.NewRegister(etcdAddress, logrus.New())
grpcAddress := viper.GetString("server.grpcAddress")

节点接入ETCD

taskNode := discovery.Server{
Name: viper.GetString("server.domain"),
Addr: grpcAddress,
}
server := grpc.NewServer()

服务注册节点

service.RegisterTaskServiceServer(server, handler.NewTaskService())
lis, err := net.Listen("tcp", grpcAddress)
if err != nil {
panic(err)
}
if _, err := etcdRegister.Register(taskNode, 10); err != nil {
panic(fmt.Sprintf("start server failed, err: %v", err))
}

2. 网关接入

2.1 服务接入

获取ETCD的服务

taskConn, _ := grpc.Dial("127.0.0.1:10002", opts...)
taskService := service.NewTaskServiceClient(taskConn)

路由注入

authed := v1.Group("/")
authed.Use(middleware.JWT())
{
// 任务模块
authed.GET("task", handler.GetTaskList)
authed.POST("task", handler.CreateTask)
authed.PUT("task", handler.UpdateTask)
authed.DELETE("task", handler.DeleteTask)
}

将服务存放在gin.Keys中

func InitMiddleware(service []interface{}) gin.HandlerFunc {
return func(context *gin.Context) {
// 将实例存在gin.Keys中
context.Keys = make(map[string]interface{})
context.Keys["user"] = service[0]
context.Keys["task"] = service[1]
context.Next()
}
}

2.2 controller

获取token，获取是哪个用户

claim, _ := util.ParseToken(ginCtx.GetHeader("Authorization"))

获取task服务

TaskService := ginCtx.Keys["task"].(service.TaskServiceClient)

调用服务

TaskResp, err := TaskService.TaskShow(context.Background(), &fReq)

完整代码

func GetTaskList(ginCtx *gin.Context) {
var fReq service.TaskRequest
PanicIfTaskError(ginCtx.Bind(&fReq))
claim, _ := util.ParseToken(ginCtx.GetHeader("Authorization"))
fReq.UserID = uint32(claim.UserID)
TaskService := ginCtx.Keys["task"].(service.TaskServiceClient)
TaskResp, err := TaskService.TaskShow(context.Background(), &fReq)
PanicIfTaskError(err)
r := res.Response{
Data:   TaskResp,
Status: uint(TaskResp.Code),
Msg:    e.GetMsg(uint(TaskResp.Code)),
}
ginCtx.JSON(http.StatusOK, r)
}

3. 测试返回

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