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error.go
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error.go
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/*
* Copyright 2020 The Dragonfly Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package middlewares
import (
"net/http"
"github.com/VividCortex/mysqlerr"
"github.com/gin-gonic/gin"
"github.com/go-sql-driver/mysql"
redigo "github.com/gomodule/redigo/redis"
"github.com/pkg/errors"
"golang.org/x/crypto/bcrypt"
"gorm.io/gorm"
"d7y.io/dragonfly/v2/internal/dferrors"
"d7y.io/dragonfly/v2/pkg/rpc/base"
)
type ErrorResponse struct {
Message string `json:"message,omitempty"`
Error string `json:"errors,omitempty"`
DocumentURL string `json:"documentation_url,omitempty"`
}
func Error() gin.HandlerFunc {
return func(c *gin.Context) {
c.Next()
err := c.Errors.Last()
if err == nil {
return
}
// Redigo error handler
if errors.Is(err, redigo.ErrNil) {
c.JSON(http.StatusNotFound, ErrorResponse{
Message: http.StatusText(http.StatusNotFound),
})
c.Abort()
return
}
// RPC error handler
if err, ok := errors.Cause(err.Err).(*dferrors.DfError); ok {
switch err.Code {
case base.Code_InvalidResourceType:
c.JSON(http.StatusBadRequest, ErrorResponse{
Message: http.StatusText(http.StatusBadRequest),
})
c.Abort()
return
default:
c.JSON(http.StatusInternalServerError, ErrorResponse{
Message: http.StatusText(http.StatusInternalServerError),
})
c.Abort()
return
}
}
// Bcrypt error handler
if errors.Is(err, bcrypt.ErrMismatchedHashAndPassword) {
c.JSON(http.StatusUnauthorized, ErrorResponse{
Message: http.StatusText(http.StatusUnauthorized),
})
c.Abort()
return
}
// GORM error handler
if errors.Is(err.Err, gorm.ErrRecordNotFound) {
c.JSON(http.StatusNotFound, ErrorResponse{
Message: http.StatusText(http.StatusNotFound),
})
c.Abort()
return
}
// Mysql error handler
if err, ok := errors.Cause(err.Err).(*mysql.MySQLError); ok {
switch err.Number {
case mysqlerr.ER_DUP_ENTRY:
c.JSON(http.StatusConflict, ErrorResponse{
Message: http.StatusText(http.StatusConflict),
})
c.Abort()
return
default:
c.JSON(http.StatusInternalServerError, ErrorResponse{
Message: http.StatusText(http.StatusInternalServerError),
})
c.Abort()
return
}
}
// Unknown error
c.JSON(http.StatusInternalServerError, nil)
}
}