mirror of https://github.com/chaos-mesh/chaosd.git
72 lines
2.0 KiB
Go
72 lines
2.0 KiB
Go
// Copyright 2020 Chaos Mesh Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package utils
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import (
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"fmt"
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"net/http"
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"github.com/gin-gonic/gin"
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"github.com/joomcode/errorx"
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)
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var (
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ErrNS = errorx.NewNamespace("error.api")
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ErrAuth = ErrNS.NewType("auth")
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ErrOther = ErrNS.NewType("other")
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ErrInvalidRequest = ErrNS.NewType("invalid_request")
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ErrInternalServer = ErrNS.NewType("internal_server_error")
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ErrNotFound = ErrNS.NewType("resource_not_found")
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)
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type APIError struct {
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Error bool `json:"error"`
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Message string `json:"message"`
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Code string `json:"code"`
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FullText string `json:"full_text"`
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}
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// MWHandleErrors creates a middleware that turns (last) error in the context into an APIError json response.
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// In handlers, `c.Error(err)` can be used to attach the error to the context.
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// When error is attached in the context:
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// - The handler can optionally assign the HTTP status code.
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// - The handler must not self-generate a response body.
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func MWHandleErrors() gin.HandlerFunc {
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return func(c *gin.Context) {
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c.Next()
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err := c.Errors.Last()
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if err == nil {
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return
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}
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statusCode := c.Writer.Status()
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if statusCode == http.StatusOK {
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statusCode = http.StatusInternalServerError
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}
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innerErr := errorx.Cast(err.Err)
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if innerErr == nil {
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innerErr = ErrOther.WrapWithNoMessage(err.Err)
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}
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c.AbortWithStatusJSON(statusCode, APIError{
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Error: true,
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Message: innerErr.Error(),
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Code: errorx.GetTypeName(innerErr),
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FullText: fmt.Sprintf("%+v", innerErr),
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})
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}
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}
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