mirror of https://github.com/gin-gonic/gin.git
122 lines
2.2 KiB
Go
122 lines
2.2 KiB
Go
// Copyright 2014 Manu Martinez-Almeida. All rights reserved.
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// Use of this source code is governed by a MIT style
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// license that can be found in the LICENSE file.
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package gin
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import (
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"bytes"
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"fmt"
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"reflect"
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)
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const (
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ErrorTypeBind = 1 << 31
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ErrorTypeRender = 1 << 30
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ErrorTypePrivate = 1 << 0
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ErrorTypePublic = 1 << 1
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ErrorTypeAny = 0xffffffff
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ErrorTypeNu = 2
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)
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// Used internally to collect errors that occurred during an http request.
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type errorMsg struct {
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Err error `json:"error"`
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Flags int `json:"-"`
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Metadata interface{} `json:"meta"`
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}
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func (msg *errorMsg) Type(flags int) *errorMsg {
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msg.Flags = flags
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return msg
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}
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func (msg *errorMsg) Meta(data interface{}) *errorMsg {
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msg.Metadata = data
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return msg
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}
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func (msg *errorMsg) JSON() interface{} {
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json := H{}
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if msg.Metadata != nil {
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value := reflect.ValueOf(msg.Metadata)
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switch value.Kind() {
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case reflect.Struct:
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return msg.Metadata
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case reflect.Map:
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for _, key := range value.MapKeys() {
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json[key.String()] = value.MapIndex(key).Interface()
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}
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}
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}
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if _, ok := json["error"]; !ok {
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json["error"] = msg.Error()
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}
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return json
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}
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func (msg *errorMsg) Error() string {
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return msg.Err.Error()
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}
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type errorMsgs []*errorMsg
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func (a errorMsgs) ByType(typ int) errorMsgs {
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if len(a) == 0 {
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return a
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}
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result := make(errorMsgs, 0, len(a))
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for _, msg := range a {
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if msg.Flags&typ > 0 {
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result = append(result, msg)
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}
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}
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return result
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}
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func (a errorMsgs) Last() *errorMsg {
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length := len(a)
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if length == 0 {
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return nil
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}
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return a[length-1]
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}
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func (a errorMsgs) Errors() []string {
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if len(a) == 0 {
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return []string{}
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}
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errorStrings := make([]string, len(a))
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for i, err := range a {
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errorStrings[i] = err.Error()
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}
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return errorStrings
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}
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func (a errorMsgs) JSON() interface{} {
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switch len(a) {
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case 0:
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return nil
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case 1:
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return a.Last().JSON()
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default:
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json := make([]interface{}, len(a))
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for i, err := range a {
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json[i] = err.JSON()
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}
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return json
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}
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}
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func (a errorMsgs) String() string {
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if len(a) == 0 {
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return ""
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}
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var buffer bytes.Buffer
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for i, msg := range a {
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fmt.Fprintf(&buffer, "Error #%02d: %s\n Meta: %v\n", (i + 1), msg.Err, msg.Metadata)
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}
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return buffer.String()
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}
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