Golang Context.Get方法代碼示例

func PostChirp(c *gin.Context) {
	var chirp model.Chirp
	body, err := ioutil.ReadAll(c.Request.Body)
	if err != nil {
		c.JSON(400, gin.H{"message": sys.ERR_READ_BODY, "status": sys.FAIL})
		return
	}

	err = json.Unmarshal(body, &chirp)
	if err != nil {
		c.JSON(500, gin.H{"message": sys.ERR_UNMARSHAL_BODY, "status": sys.FAIL, "payload": body})
		return
	}

	uid, _ := c.Get("userid")
	chirp.Userid, _ = Atoi(uid.(string))

	row := util.DB.QueryRow(chirp.StmtInsert())
	err = row.Scan(&chirp.Id)
	if err != nil {
		c.JSON(500, gin.H{"message": sys.ERR_DB_INSERT, "status": sys.FAIL, "payload": body})
		return
	}
	c.JSON(200, gin.H{"payload": chirp.Id, "status": sys.SUCCESS})
}

func getContext(c *gin.Context) (tmpl string, context map[string]interface{}, err error) {
	tmplName, tmplNameExists := c.Get("tmpl")
	tmplNameValue, isString := tmplName.(string)
	tmplData, tmplDataExists := c.Get("data")

	// 模板未定義
	if !tmplNameExists || !isString {
		return "", nil, errors.New("No tmpl defined!")
	}

	// 公共模板數據
	commonDatas := getCommonContext(c)

	// 模板數據
	if tmplData != nil && tmplDataExists {
		contextData, isMap := tmplData.(map[string]interface{})

		if isMap {
			for key, value := range commonDatas {
				contextData[key] = value
			}

			return tmplNameValue, contextData, nil
		}
	}

	return tmplNameValue, commonDatas, nil

}

func NewMessage(c *gin.Context) {
	user, _ := c.Get("User")

	username := user.(middleware.Userinfo).Username
	sid, _ := c.Get("Sid")
	fmt.Println("sid--->", sid)

	var msg Message
	err := c.BindJSON(&msg)
	if err == nil {
		//fmt.Printf("%#v\n", msg)
		conn := db.GetConnection()
		//fmt.Println("--->", username)
		if msg.Body == "" {
			return
		}
		if username == "" {
			c.JSON(400, gin.H{"error": "session expired"})
			return
		}
		insert_message(conn, msg.Body, username)
		if msg.To != "" {
			//fmt.Println("go to:", msg.To)
			c.JSON(http.StatusOK, gin.H{"status": "have to", "body": "you say: " + msg.Body})
		} else {
			//fmt.Println("to all")
			c.JSON(http.StatusOK, gin.H{"status": "to all", "body": "you say: " + msg.Body})
		}
		return
	}
	fmt.Println("err===", err)
	c.JSON(400, gin.H{"error": err})
}

func HandleRun(c *gin.Context) {
	req, err := ParseRequest(c.Request)
	if err != nil {
		errorResponse(400, err, c)
		return
	}

	config, exists := c.Get("config")
	if !exists {
		errorResponse(400, fmt.Errorf("Cant get config"), c)
		return
	}

	client, exists := c.Get("client")
	if !exists {
		errorResponse(400, fmt.Errorf("Cant get client"), c)
		return
	}

	run := NewRun(config.(*Config), client.(*docker.Client), req)
	defer run.Destroy()

	result, err := performRun(run)
	if err != nil {
		errorResponse(400, err, c)
		return
	}

	c.Header("X-Run-Command", req.Command)
	c.Header("X-Run-ExitCode", strconv.Itoa(result.ExitCode))
	c.Header("X-Run-Duration", result.Duration)

	c.Data(200, req.Format, result.Output)
}

func IndexHandler(c *gin.Context) {

	var listTmpl = template.Must(template.ParseFiles("templates/base.html",
		"apps/message/templates/index.html"))

	User, _ := c.Get("User")
	Sid, _ := c.Get("Sid")
	sid := Sid.(string)
	//fmt.Println("User+++==>", Sid)

	bapi := auth.GetBackendApi2(c)
	data := gin.H{}
	if err := bapi.Get(&data, "http://127.0.0.1:8080/messages"); err != nil {
		fmt.Println("bapi failed:", err)
		return
	}

	if e, exist := data["error"]; exist {
		fmt.Println("get messages failed:", e.(string))
		if e.(string) == "session expired" {
			conn := utils.OpenDB()
			auth.Signout_del_session(conn, sid)
			c.Redirect(302, "/auth/signin")
			return
		}
		// TODO: else
	}

	data["User"] = User

	if err := listTmpl.Execute(c.Writer, data); err != nil {
		fmt.Println(err.Error())
	}

}

// Hostname returns the hostname associated with
// the current context.
func Hostname(c *gin.Context) (host string) {
	v, ok := c.Get("host")
	if ok {
		host = v.(string)
	}
	return
}

// IsTatSystem return true if user is a system user. Get value in gin.Context
func IsTatSystem(ctx *gin.Context) bool {
	value, exist := ctx.Get(TatCtxIsSystem)
	if value != nil && exist && value.(bool) == true {
		return true
	}
	return false
}

// convertByURLHandler is the main v1 API handler for converting a HTML to a PDF
// via a GET request. It can either return a JSON string indicating that the
// output of the conversion has been uploaded or it can return the output of
// the conversion to the client (raw bytes).
func convertByURLHandler(c *gin.Context) {
	s := c.MustGet("statsd").(*statsd.Client)
	r, ravenOk := c.Get("sentry")

	url := c.Query("url")
	if url == "" {
		c.AbortWithError(http.StatusBadRequest, ErrURLInvalid).SetType(gin.ErrorTypePublic)
		s.Increment("invalid_url")
		return
	}

	ext := c.Query("ext")

	source, err := converter.NewConversionSource(url, nil, ext)
	if err != nil {
		s.Increment("conversion_error")
		if ravenOk {
			r.(*raven.Client).CaptureError(err, map[string]string{"url": url})
		}
		c.Error(err)
		return
	}

	conversionHandler(c, *source)
}

func convertByFileHandler(c *gin.Context) {
	s := c.MustGet("statsd").(*statsd.Client)
	r, ravenOk := c.Get("sentry")

	file, header, err := c.Request.FormFile("file")
	if err != nil {
		c.AbortWithError(http.StatusBadRequest, ErrFileInvalid).SetType(gin.ErrorTypePublic)
		s.Increment("invalid_file")
		return
	}

	ext := c.Query("ext")

	source, err := converter.NewConversionSource("", file, ext)
	if err != nil {
		s.Increment("conversion_error")
		if ravenOk {
			r.(*raven.Client).CaptureError(err, map[string]string{"url": header.Filename})
		}
		c.Error(err)
		return
	}

	conversionHandler(c, *source)
}

func ReadSeriesOfUserHandler(c *gin.Context, app AppContext) error {
	tmp, err := c.Get("Session")
	if err != nil {
		return err
	}

	s, ok := tmp.(aauth.Session)
	if !ok {
		errors.New("Cannot find session")
	}

	userID := c.Params.ByName("id")
	if s.UserID == userID {
		errors.New("Wrong user")
	}

	db := app.DB()
	defer db.Session.Close()
	sList, err := ReadSeriesOfUser(db, bson.ObjectIdHex(s.UserID))

	if err != nil {
		return err
	}

	resp := NewSuccessResponse(sList)
	c.JSON(http.StatusOK, resp)

	return nil
}

func DB(ctx *gin.Context) *gorm.DB {
	newDB, exist := ctx.Get("DB")
	if exist {
		return newDB.(*gorm.DB)
	}
	return db.DB
}

func getDB(c *gin.Context) *sql.DB {
	db, ok := c.Get("DB")
	if ok {
		return db.(*sql.DB)
	}
	return nil
}

func AuthCheck(c *gin.Context) {
	id, _ := c.Get("request_id")
	log.InfoFields("Checking auth token", log.Fields{
		"request_id": id,
	})

	token := c.Query("token")
	if token == "" {
		tokenHeaders := c.Request.Header["Token"]
		if len(tokenHeaders) == 0 {
			c.AbortWithError(http.StatusUnauthorized, fmt.Errorf("No notion access token provided"))
			return
		} else {
			token = tokenHeaders[0]
		}
	}

	in, user, err := db.GetUserByToken(token)
	if err != nil {
		c.AbortWithError(http.StatusInternalServerError, fmt.Errorf("Internal server error"))
		return
	}
	if !in {
		c.AbortWithError(http.StatusUnauthorized, fmt.Errorf("Notion access token provided is not currently valid"))
		return
	}

	c.Set("request_user_id", user.Id)
}

func DeleteChirp(c *gin.Context) {
	var id = c.Params.ByName("id")
	var chirp model.Chirp

	uid, _ := c.Get("userid")
	userid, _ := Atoi(uid.(string))
	chirp.Id, _ = Atoi(id)

	row := util.DB.QueryRow(chirp.StmtGetById())
	err := row.Scan(&chirp.Id, &chirp.Userid, &chirp.Type, &chirp.Message, &chirp.Create_date, &chirp.Active)
	if err != nil {
		c.JSON(400, sys.JSON_NOACCESS)
		return
	}

	// Check if chirp belongs to requester's account
	if chirp.Userid != userid {
		c.JSON(403, sys.JSON_NOACCESS)
		return
	}

	row = util.DB.QueryRow(chirp.StmtSetActive(false))
	err = row.Scan(&chirp.Id)
	if err != nil {
		c.JSON(500, gin.H{"message": sys.ERR_DB_DELETE, "status": sys.FAIL, "payload": id})
		return
	}
	c.JSON(200, gin.H{"payload": "Deleted Chirp " + Itoa(chirp.Id), "status": sys.SUCCESS})

}

func GetToken(c *gin.Context) *tokenModel {
	token, exists := c.Get("token")
	if !exists {
		panic("token not exists")
	}
	return token.(*tokenModel)
}