feat(recycler): add error cecycler (#10)

pkg/server/controller.go

@@ -1,11 +1,18 @@
 package server
 
 import (
+	"fmt"
 	"io"
+	"net"
 	"net/http"
+	"net/http/httputil"
+	"os"
+	"strings"
+	"time"
 
 	"github.com/gin-gonic/gin"
 	"github.com/li4n0/revsuit/internal/record"
+	"github.com/li4n0/revsuit/internal/recycler"
 	log "unknwon.dev/clog/v2"
 )
 
@@ -33,3 +40,48 @@ func events(c *gin.Context) {
 	})
 	log.Info(c.Request.RemoteAddr, "disconnect")
 }
+
+func recovery(c *gin.Context) {
+	timeFormat := func(t time.Time) string {
+		var timeString = t.Format("2006/01/02 - 15:04:05")
+		return timeString
+	}
+	defer func() {
+		if err := recover(); err != nil {
+			// Check for a broken connection, as it is not really a
+			// condition that warrants a panic stack trace.
+			var brokenPipe bool
+			if ne, ok := err.(*net.OpError); ok {
+				if se, ok := ne.Err.(*os.SyscallError); ok {
+					if strings.Contains(strings.ToLower(se.Error()), "broken pipe") || strings.Contains(strings.ToLower(se.Error()), "connection reset by peer") {
+						brokenPipe = true
+					}
+				}
+			}
+			httpRequest, _ := httputil.DumpRequest(c.Request, false)
+			headers := strings.Split(string(httpRequest), "\r\n")
+			for idx, header := range headers {
+				current := strings.Split(header, ":")
+				if current[0] == "Authorization" {
+					headers[idx] = current[0] + ": *"
+				}
+			}
+			if brokenPipe {
+				recycler.Recycle(fmt.Sprintf("%s\n%s", err, string(httpRequest)))
+			} else if gin.IsDebugging() {
+				recycler.Recycle(fmt.Sprintf("[Recovery] %s panic recovered:\n%s\n%s\n", timeFormat(time.Now()), strings.Join(headers, "\r\n"), err))
+			} else {
+				recycler.Recycle(fmt.Sprintf("[Recovery] %s panic recovered:\n%s\n", timeFormat(time.Now()), err))
+			}
+
+			// If the connection is dead, we can't write a status to it.
+			if brokenPipe {
+				_ = c.Error(err.(error)) // nolint: errcheck
+				c.Abort()
+			} else {
+				c.AbortWithStatus(http.StatusInternalServerError)
+			}
+		}
+	}()
+	c.Next()
+}