add limiter web api

api/config_limiter.go

@@ -0,0 +1,166 @@
+package api
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"github.com/go-gost/x/config"
+	"github.com/go-gost/x/config/parsing"
+	"github.com/go-gost/x/registry"
+)
+
+// swagger:parameters createLimiterRequest
+type createLimiterRequest struct {
+	// in: body
+	Data config.LimiterConfig `json:"data"`
+}
+
+// successful operation.
+// swagger:response createLimiterResponse
+type createLimiterResponse struct {
+	Data Response
+}
+
+func createLimiter(ctx *gin.Context) {
+	// swagger:route POST /config/limiters Limiter createLimiterRequest
+	//
+	// Create a new limiter, the name of limiter must be unique in limiter list.
+	//
+	//     Security:
+	//       basicAuth: []
+	//
+	//     Responses:
+	//       200: createLimiterResponse
+
+	var req createLimiterRequest
+	ctx.ShouldBindJSON(&req.Data)
+
+	if req.Data.Name == "" {
+		writeError(ctx, ErrInvalid)
+		return
+	}
+
+	v := parsing.ParseRateLimiter(&req.Data)
+
+	if err := registry.RateLimiterRegistry().Register(req.Data.Name, v); err != nil {
+		writeError(ctx, ErrDup)
+		return
+	}
+
+	cfg := config.Global()
+	cfg.Limiters = append(cfg.Limiters, &req.Data)
+	config.SetGlobal(cfg)
+
+	ctx.JSON(http.StatusOK, Response{
+		Msg: "OK",
+	})
+}
+
+// swagger:parameters updateLimiterRequest
+type updateLimiterRequest struct {
+	// in: path
+	// required: true
+	Limiter string `uri:"limiter" json:"limiter"`
+	// in: body
+	Data config.LimiterConfig `json:"data"`
+}
+
+// successful operation.
+// swagger:response updateLimiterResponse
+type updateLimiterResponse struct {
+	Data Response
+}
+
+func updateLimiter(ctx *gin.Context) {
+	// swagger:route PUT /config/limiters/{limiter} Limiter updateLimiterRequest
+	//
+	// Update limiter by name, the limiter must already exist.
+	//
+	//     Security:
+	//       basicAuth: []
+	//
+	//     Responses:
+	//       200: updateLimiterResponse
+
+	var req updateLimiterRequest
+	ctx.ShouldBindUri(&req)
+	ctx.ShouldBindJSON(&req.Data)
+
+	if !registry.RateLimiterRegistry().IsRegistered(req.Limiter) {
+		writeError(ctx, ErrNotFound)
+		return
+	}
+
+	req.Data.Name = req.Limiter
+
+	v := parsing.ParseRateLimiter(&req.Data)
+
+	registry.RateLimiterRegistry().Unregister(req.Limiter)
+
+	if err := registry.RateLimiterRegistry().Register(req.Limiter, v); err != nil {
+		writeError(ctx, ErrDup)
+		return
+	}
+
+	cfg := config.Global()
+	for i := range cfg.Limiters {
+		if cfg.Limiters[i].Name == req.Limiter {
+			cfg.Limiters[i] = &req.Data
+			break
+		}
+	}
+	config.SetGlobal(cfg)
+
+	ctx.JSON(http.StatusOK, Response{
+		Msg: "OK",
+	})
+}
+
+// swagger:parameters deleteLimiterRequest
+type deleteLimiterRequest struct {
+	// in: path
+	// required: true
+	Limiter string `uri:"Limiter" json:"Limiter"`
+}
+
+// successful operation.
+// swagger:response deleteLimiterResponse
+type deleteLimiterResponse struct {
+	Data Response
+}
+
+func deleteLimiter(ctx *gin.Context) {
+	// swagger:route DELETE /config/limiters/{limiter} Limiter deleteLimiterRequest
+	//
+	// Delete limiter by name.
+	//
+	//     Security:
+	//       basicAuth: []
+	//
+	//     Responses:
+	//       200: deleteLimiterResponse
+
+	var req deleteLimiterRequest
+	ctx.ShouldBindUri(&req)
+
+	if !registry.RateLimiterRegistry().IsRegistered(req.Limiter) {
+		writeError(ctx, ErrNotFound)
+		return
+	}
+	registry.RateLimiterRegistry().Unregister(req.Limiter)
+
+	cfg := config.Global()
+	limiteres := cfg.Limiters
+	cfg.Limiters = nil
+	for _, s := range limiteres {
+		if s.Name == req.Limiter {
+			continue
+		}
+		cfg.Limiters = append(cfg.Limiters, s)
+	}
+	config.SetGlobal(cfg)
+
+	ctx.JSON(http.StatusOK, Response{
+		Msg: "OK",
+	})
+}