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6ef5f77bf2
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
106 lines
3.0 KiB
Go
106 lines
3.0 KiB
Go
package echo
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import (
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"bufio"
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"errors"
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"net"
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"net/http"
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)
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// Response wraps an http.ResponseWriter and implements its interface to be used
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// by an HTTP handler to construct an HTTP response.
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// See: https://golang.org/pkg/net/http/#ResponseWriter
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type Response struct {
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echo *Echo
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beforeFuncs []func()
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afterFuncs []func()
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Writer http.ResponseWriter
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Status int
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Size int64
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Committed bool
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}
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// NewResponse creates a new instance of Response.
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func NewResponse(w http.ResponseWriter, e *Echo) (r *Response) {
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return &Response{Writer: w, echo: e}
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}
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// Header returns the header map for the writer that will be sent by
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// WriteHeader. Changing the header after a call to WriteHeader (or Write) has
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// no effect unless the modified headers were declared as trailers by setting
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// the "Trailer" header before the call to WriteHeader (see example)
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// To suppress implicit response headers, set their value to nil.
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// Example: https://golang.org/pkg/net/http/#example_ResponseWriter_trailers
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func (r *Response) Header() http.Header {
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return r.Writer.Header()
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}
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// Before registers a function which is called just before the response is written.
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func (r *Response) Before(fn func()) {
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r.beforeFuncs = append(r.beforeFuncs, fn)
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}
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// After registers a function which is called just after the response is written.
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// If the `Content-Length` is unknown, none of the after function is executed.
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func (r *Response) After(fn func()) {
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r.afterFuncs = append(r.afterFuncs, fn)
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}
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var errHeaderAlreadyCommitted = errors.New("response already committed")
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// WriteHeader sends an HTTP response header with status code. If WriteHeader is
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// not called explicitly, the first call to Write will trigger an implicit
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// WriteHeader(http.StatusOK). Thus explicit calls to WriteHeader are mainly
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// used to send error codes.
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func (r *Response) WriteHeader(code int) {
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if r.Committed {
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r.echo.Logger.Error(errHeaderAlreadyCommitted)
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return
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}
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r.Status = code
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for _, fn := range r.beforeFuncs {
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fn()
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}
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r.Writer.WriteHeader(r.Status)
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r.Committed = true
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}
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// Write writes the data to the connection as part of an HTTP reply.
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func (r *Response) Write(b []byte) (n int, err error) {
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if !r.Committed {
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if r.Status == 0 {
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r.Status = http.StatusOK
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}
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r.WriteHeader(r.Status)
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}
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n, err = r.Writer.Write(b)
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r.Size += int64(n)
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for _, fn := range r.afterFuncs {
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fn()
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}
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return
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}
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// Flush implements the http.Flusher interface to allow an HTTP handler to flush
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// buffered data to the client.
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// See [http.Flusher](https://golang.org/pkg/net/http/#Flusher)
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func (r *Response) Flush() {
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r.Writer.(http.Flusher).Flush()
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}
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// Hijack implements the http.Hijacker interface to allow an HTTP handler to
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// take over the connection.
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// See [http.Hijacker](https://golang.org/pkg/net/http/#Hijacker)
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func (r *Response) Hijack() (net.Conn, *bufio.ReadWriter, error) {
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return r.Writer.(http.Hijacker).Hijack()
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}
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func (r *Response) reset(w http.ResponseWriter) {
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r.beforeFuncs = nil
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r.afterFuncs = nil
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r.Writer = w
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r.Size = 0
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r.Status = http.StatusOK
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r.Committed = false
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}
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