mirror of
https://github.com/caddyserver/caddy.git
synced 2024-12-23 22:27:38 -05:00
95 lines
2.6 KiB
Go
95 lines
2.6 KiB
Go
// Copyright 2015 Matthew Holt and The Caddy 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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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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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 caddybrotli
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import (
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"fmt"
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"strconv"
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"github.com/andybalholm/brotli"
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"github.com/caddyserver/caddy/v2"
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"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
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"github.com/caddyserver/caddy/v2/modules/caddyhttp/encode"
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)
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func init() {
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caddy.RegisterModule(Brotli{})
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}
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// Brotli can create brotli encoders. Note that brotli
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// is not known for great encoding performance, and
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// its use during requests is discouraged; instead,
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// pre-compress the content instead.
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type Brotli struct {
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Quality *int `json:"quality,omitempty"`
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}
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// CaddyModule returns the Caddy module information.
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func (Brotli) CaddyModule() caddy.ModuleInfo {
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return caddy.ModuleInfo{
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ID: "http.encoders.brotli",
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New: func() caddy.Module { return new(Brotli) },
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}
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}
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// UnmarshalCaddyfile sets up the handler from Caddyfile tokens.
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func (b *Brotli) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
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for d.Next() {
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if !d.NextArg() {
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continue
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}
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qualityStr := d.Val()
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quality, err := strconv.Atoi(qualityStr)
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if err != nil {
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return err
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}
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b.Quality = &quality
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}
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return nil
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}
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// Validate validates b's configuration.
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func (b Brotli) Validate() error {
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if b.Quality != nil {
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quality := *b.Quality
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if quality < brotli.BestSpeed {
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return fmt.Errorf("quality too low; must be >= %d", brotli.BestSpeed)
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}
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if quality > brotli.BestCompression {
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return fmt.Errorf("quality too high; must be <= %d", brotli.BestCompression)
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}
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}
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return nil
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}
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// AcceptEncoding returns the name of the encoding as
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// used in the Accept-Encoding request headers.
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func (Brotli) AcceptEncoding() string { return "br" }
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// NewEncoder returns a new brotli writer.
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func (b Brotli) NewEncoder() encode.Encoder {
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quality := brotli.DefaultCompression
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if b.Quality != nil {
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quality = *b.Quality
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}
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return brotli.NewWriterLevel(nil, quality)
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}
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// Interface guards
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var (
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_ encode.Encoding = (*Brotli)(nil)
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_ caddy.Validator = (*Brotli)(nil)
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_ caddyfile.Unmarshaler = (*Brotli)(nil)
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)
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