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mirror of https://github.com/labstack/echo.git synced 2025-01-07 23:01:56 +02:00
echo/middleware/body_dump.go
toimtoimtoim 6ef5f77bf2 WIP: logger examples
WIP: make default logger implemented custom writer for jsonlike logs
WIP: improve examples
WIP: defaultErrorHandler use errors.As to unwrap errors. Update readme
WIP: default logger logs json, restore e.Start method
WIP: clean router.Match a bit
WIP: func types/fields have echo.Context has first element
WIP: remove yaml tags as functions etc can not be serialized anyway
WIP: change BindPathParams,BindQueryParams,BindHeaders from methods to functions and reverse arguments to be like DefaultBinder.Bind is
WIP: improved comments, logger now extracts status from error
WIP: go mod tidy
WIP: rebase with 4.5.0
WIP:
* removed todos.
* removed StartAutoTLS and StartH2CServer methods from `StartConfig`
* KeyAuth middleware errorhandler can swallow the error and resume next middleware
WIP: add RouterConfig.UseEscapedPathForMatching to use escaped path for matching request against routes
WIP: FIXMEs
WIP: upgrade golang-jwt/jwt to `v4`
WIP: refactor http methods to return RouteInfo
WIP: refactor static not creating multiple routes
WIP: refactor route and middleware adding functions not to return error directly
WIP: Use 401 for problematic/missing headers for key auth and JWT middleware (#1552, #1402).
> In summary, a 401 Unauthorized response should be used for missing or bad authentication
WIP: replace `HTTPError.SetInternal` with `HTTPError.WithInternal` so we could not mutate global error variables
WIP: add RouteInfo and RouteMatchType into Context what we could know from in middleware what route was matched and/or type of that match (200/404/405)
WIP: make notFoundHandler and methodNotAllowedHandler private. encourage that all errors be handled in Echo.HTTPErrorHandler
WIP: server cleanup ideas
WIP: routable.ForGroup
WIP: note about logger middleware
WIP: bind should not default values on second try. use crypto rand for better randomness
WIP: router add route as interface and returns info as interface
WIP: improve flaky test (remains still flaky)
WIP: add notes about bind default values
WIP: every route can have their own path params names
WIP: routerCreator and different tests
WIP: different things
WIP: remove route implementation
WIP: support custom method types
WIP: extractor tests
WIP: v5.0.x proposal
over v4.4.0
2021-10-02 18:36:42 +03:00

100 lines
2.4 KiB
Go

package middleware
import (
"bufio"
"bytes"
"errors"
"io"
"io/ioutil"
"net"
"net/http"
"github.com/labstack/echo/v4"
)
// BodyDumpConfig defines the config for BodyDump middleware.
type BodyDumpConfig struct {
// Skipper defines a function to skip middleware.
Skipper Skipper
// Handler receives request and response payload.
// Required.
Handler BodyDumpHandler
}
// BodyDumpHandler receives the request and response payload.
type BodyDumpHandler func(c echo.Context, reqBody []byte, resBody []byte)
type bodyDumpResponseWriter struct {
io.Writer
http.ResponseWriter
}
// BodyDump returns a BodyDump middleware.
//
// BodyDump middleware captures the request and response payload and calls the
// registered handler.
func BodyDump(handler BodyDumpHandler) echo.MiddlewareFunc {
return BodyDumpWithConfig(BodyDumpConfig{Handler: handler})
}
// BodyDumpWithConfig returns a BodyDump middleware with config.
// See: `BodyDump()`.
func BodyDumpWithConfig(config BodyDumpConfig) echo.MiddlewareFunc {
return toMiddlewareOrPanic(config)
}
// ToMiddleware converts BodyDumpConfig to middleware or returns an error for invalid configuration
func (config BodyDumpConfig) ToMiddleware() (echo.MiddlewareFunc, error) {
if config.Handler == nil {
return nil, errors.New("echo body-dump middleware requires a handler function")
}
if config.Skipper == nil {
config.Skipper = DefaultSkipper
}
return func(next echo.HandlerFunc) echo.HandlerFunc {
return func(c echo.Context) error {
if config.Skipper(c) {
return next(c)
}
// Request
reqBody := []byte{}
if c.Request().Body != nil {
reqBody, _ = ioutil.ReadAll(c.Request().Body)
}
c.Request().Body = ioutil.NopCloser(bytes.NewBuffer(reqBody)) // Reset
// Response
resBody := new(bytes.Buffer)
mw := io.MultiWriter(c.Response().Writer, resBody)
writer := &bodyDumpResponseWriter{Writer: mw, ResponseWriter: c.Response().Writer}
c.Response().Writer = writer
err := next(c)
// Callback
config.Handler(c, reqBody, resBody.Bytes())
return err
}
}, nil
}
func (w *bodyDumpResponseWriter) WriteHeader(code int) {
w.ResponseWriter.WriteHeader(code)
}
func (w *bodyDumpResponseWriter) Write(b []byte) (int, error) {
return w.Writer.Write(b)
}
func (w *bodyDumpResponseWriter) Flush() {
w.ResponseWriter.(http.Flusher).Flush()
}
func (w *bodyDumpResponseWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
return w.ResponseWriter.(http.Hijacker).Hijack()
}