add web api

pkg/api/api.go

@@ -0,0 +1,86 @@
+package api
+
+import (
+	"net"
+	"net/http"
+	"time"
+
+	"github.com/gin-contrib/cors"
+	"github.com/gin-gonic/gin"
+	"github.com/go-gost/gost/pkg/logger"
+)
+
+var (
+	apiServer = &http.Server{}
+)
+
+func init() {
+	gin.SetMode(gin.ReleaseMode)
+
+	r := gin.New()
+	r.Use(
+		cors.New((cors.Config{
+			AllowAllOrigins: true,
+			AllowMethods:    []string{"GET", "POST", "PUT", "DELETE"},
+			AllowHeaders:    []string{"*"},
+		})),
+		loggerHandler,
+		gin.Recovery(),
+	)
+
+	r.StaticFile("/swagger.yaml", "swagger.yaml")
+
+	config := r.Group("/config")
+	{
+		config.GET("", getConfig)
+
+		config.POST("/services", createService)
+		config.PUT("/services/:service", updateService)
+		config.DELETE("/services/:service", deleteService)
+
+		config.POST("/chains", createChain)
+		config.PUT("/chains/:chain", updateChain)
+		config.DELETE("/chains/:chain", deleteChain)
+
+		config.POST("/bypasses", createBypass)
+		config.PUT("/bypasses/:bypass", updateBypass)
+		config.DELETE("/bypasses/:bypass", deleteBypass)
+
+		config.POST("/resolvers", createResolver)
+		config.PUT("/resolvers/:resolver", updateResolver)
+		config.DELETE("/resolvers/:resolver", deleteResolver)
+
+		config.POST("/hosts", createHosts)
+		config.PUT("/hosts/:hosts", updateHosts)
+		config.DELETE("/hosts/:hosts", deleteHosts)
+	}
+
+	apiServer.Handler = r
+}
+
+type Response struct {
+	Code int    `json:"code,omitempty"`
+	Msg  string `json:"msg,omitempty"`
+}
+
+func Run(ln net.Listener) error {
+	return apiServer.Serve(ln)
+}
+
+func loggerHandler(ctx *gin.Context) {
+	// start time
+	startTime := time.Now()
+	// Processing request
+	ctx.Next()
+	duration := time.Since(startTime)
+
+	logger.Default().WithFields(map[string]interface{}{
+		"kind":     "api",
+		"method":   ctx.Request.Method,
+		"uri":      ctx.Request.RequestURI,
+		"code":     ctx.Writer.Status(),
+		"client":   ctx.ClientIP(),
+		"duration": duration,
+	}).Infof("| %3d | %13v | %15s | %-7s %s",
+		ctx.Writer.Status(), duration, ctx.ClientIP(), ctx.Request.Method, ctx.Request.RequestURI)
+}