文章目錄
- 寫在前面
- 源碼位址:
- 1. 備忘錄部分
- 1.1 proto子產品定義
- 1.2 資料庫結構定義
- 1.3 接入ETCD
- 2. 網關接入
- 2.1 服務接入
- 2.2 controller
- 3. 測試傳回
寫在前面
和上篇文章類似,這次我們完成具體功能部分。
源碼位址:
https://github.com/CocaineCong/gRPC-todoList
1. 備忘錄部分
1.1 proto子產品定義
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);
}
擷取所有生成pb.go檔案
protoc -I internal/service/pb internal/service/pb/*.proto --go_out=plugins=grpc:.
1.2 資料庫結構定義
- 模型定義
type Task struct {
TaskID uint `gorm:"primarykey"` // 收藏夾id
UserID uint `gorm:"index"` // 使用者id
Status int `gorm:"default:0"`
Title string
Content string `gorm:"type:longtext"`
StartTime int64
EndTime int64
}
- 展示所有的任務
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
}
- 建立備忘錄
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
}
- 删除備忘錄
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服務初始化
etcdAddress := []string{viper.GetString("etcd.address")}
etcdRegister := discovery.NewRegister(etcdAddress, logrus.New())
grpcAddress := viper.GetString("server.grpcAddress")
- 節點接入ETCD
taskNode := discovery.Server{
Name: viper.GetString("server.domain"),
Addr: grpcAddress,
}
server := grpc.NewServer()
- 服務注冊節點
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. 網關接入
2.1 服務接入
- 擷取ETCD的服務
taskConn, _ := grpc.Dial("127.0.0.1:10002", opts...)
taskService := service.NewTaskServiceClient(taskConn)
- 路由注入
authed := v1.Group("/")
authed.Use(middleware.JWT())
{
// 任務子產品
authed.GET("task", handler.GetTaskList)
authed.POST("task", handler.CreateTask)
authed.PUT("task", handler.UpdateTask)
authed.DELETE("task", handler.DeleteTask)
}
func InitMiddleware(service []interface{}) gin.HandlerFunc {
return func(context *gin.Context) {
// 将執行個體存在gin.Keys中
context.Keys = make(map[string]interface{})
context.Keys["user"] = service[0]
context.Keys["task"] = service[1]
context.Next()
}
}
2.2 controller
- 擷取token,擷取是哪個使用者
claim, _ := util.ParseToken(ginCtx.GetHeader("Authorization"))
- 擷取task服務
TaskService := ginCtx.Keys["task"].(service.TaskServiceClient)
- 調用服務
TaskResp, err := TaskService.TaskShow(context.Background(), &fReq)
- 完整代碼
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)
}