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Fix encoder name bug; remove unused field in encode middleware struct

This commit is contained in:
Matthew Holt 2019-06-29 16:57:55 -06:00
parent d5ae3a4966
commit fee0b38b48
4 changed files with 31 additions and 21 deletions

View file

@ -35,6 +35,10 @@ func (b Brotli) Validate() error {
return nil
}
// AcceptEncoding returns the name of the encoding as
// used in the Accept-Encoding request headers.
func (Brotli) AcceptEncoding() string { return "br" }
// NewEncoder returns a new brotli writer.
func (b Brotli) NewEncoder() encode.Encoder {
quality := brotli.DefaultCompression
@ -46,6 +50,6 @@ func (b Brotli) NewEncoder() encode.Encoder {
// Interface guards
var (
_ encode.Encoding = (*Brotli)(nil)
_ encode.Encoding = (*Brotli)(nil)
_ caddy.Validator = (*Brotli)(nil)
)

View file

@ -1,8 +1,8 @@
// Package encode implements an encoder middleware for Caddy. The initial
// enhancements related to Accept-Encoding, minimum content length, and
// buffer/writer pools were adapted from https://github.com/xi2/httpgzip
// then modified heavily to accommodate modular encoders. Code borrowed
// from that repository is Copyright (c) 2015 The Httpgzip Authors.
// then modified heavily to accommodate modular encoders and fix bugs.
// Code borrowed from that repository is Copyright (c) 2015 The Httpgzip Authors.
package encode
import (
@ -33,14 +33,11 @@ type Encode struct {
Prefer []string `json:"prefer,omitempty"`
MinLength int `json:"minimum_length,omitempty"`
Encodings map[string]Encoding `json:"-"`
writerPools map[string]*sync.Pool // TODO: these pools do not get reused through config reloads...
}
// Provision provisions enc.
func (enc *Encode) Provision(ctx caddy.Context) error {
enc.Encodings = make(map[string]Encoding)
enc.writerPools = make(map[string]*sync.Pool)
for modName, rawMsg := range enc.EncodingsRaw {
@ -49,9 +46,8 @@ func (enc *Encode) Provision(ctx caddy.Context) error {
return fmt.Errorf("loading encoder module '%s': %v", modName, err)
}
encoder := val.(Encoding)
enc.Encodings[modName] = encoder
enc.writerPools[modName] = &sync.Pool{
enc.writerPools[encoder.AcceptEncoding()] = &sync.Pool{
New: func() interface{} {
return encoder.NewEncoder()
},
@ -159,17 +155,6 @@ func (rw *responseWriter) Write(p []byte) (int, error) {
return n, err
}
// init should be called before we write a response, if rw.buf has contents.
func (rw *responseWriter) init() {
if rw.Header().Get("Content-Encoding") == "" && rw.buf.Len() >= rw.config.MinLength {
rw.w = rw.config.writerPools[rw.encodingName].Get().(Encoder)
rw.w.Reset(rw.ResponseWriter)
rw.Header().Del("Content-Length") // https://github.com/golang/go/issues/14975
rw.Header().Set("Content-Encoding", rw.encodingName)
}
rw.Header().Del("Accept-Ranges") // we don't know ranges for dynamically-encoded content
}
// Close writes any remaining buffered response and
// deallocates any active resources.
func (rw *responseWriter) Close() error {
@ -213,6 +198,17 @@ func (rw *responseWriter) Close() error {
return err
}
// init should be called before we write a response, if rw.buf has contents.
func (rw *responseWriter) init() {
if rw.Header().Get("Content-Encoding") == "" && rw.buf.Len() >= rw.config.MinLength {
rw.w = rw.config.writerPools[rw.encodingName].Get().(Encoder)
rw.w.Reset(rw.ResponseWriter)
rw.Header().Del("Content-Length") // https://github.com/golang/go/issues/14975
rw.Header().Set("Content-Encoding", rw.encodingName)
}
rw.Header().Del("Accept-Ranges") // we don't know ranges for dynamically-encoded content
}
// acceptedEncodings returns the list of encodings that the
// client supports, in descending order of preference. If
// the Sec-WebSocket-Key header is present then non-identity
@ -288,8 +284,10 @@ type Encoder interface {
Reset(io.Writer)
}
// Encoding is a type which can create encoders of its kind.
// Encoding is a type which can create encoders of its kind
// and return the name used in the Accept-Encoding header.
type Encoding interface {
AcceptEncoding() string
NewEncoder() Encoder
}

View file

@ -40,6 +40,10 @@ func (g Gzip) Validate() error {
return nil
}
// AcceptEncoding returns the name of the encoding as
// used in the Accept-Encoding request headers.
func (Gzip) AcceptEncoding() string { return "gzip" }
// NewEncoder returns a new gzip writer.
func (g Gzip) NewEncoder() encode.Encoder {
writer, _ := gzip.NewWriterLevel(nil, g.Level)
@ -51,7 +55,7 @@ var defaultGzipLevel = 5
// Interface guards
var (
_ encode.Encoding = (*Gzip)(nil)
_ encode.Encoding = (*Gzip)(nil)
_ caddy.Provisioner = (*Gzip)(nil)
_ caddy.Validator = (*Gzip)(nil)
)

View file

@ -16,6 +16,10 @@ func init() {
// Zstd can create zstd encoders.
type Zstd struct{}
// AcceptEncoding returns the name of the encoding as
// used in the Accept-Encoding request headers.
func (Zstd) AcceptEncoding() string { return "zstd" }
// NewEncoder returns a new gzip writer.
func (z Zstd) NewEncoder() encode.Encoder {
writer, _ := zstd.NewWriter(nil)