Method SetEncoder

coderd/cachecompress/compress.go:135–171

SetEncoder can be used to set the implementation of a compression algorithm. The encoding should be a standardized identifier. See: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept-Encoding For example, add the Brotli algorithm: import brotli_enc "gopkg.in/kothar/brotli-go.v0/enc

(encoding string, fn EncoderFunc)

//		return brotli_enc.NewBrotliWriter(params, w)
//	})
func (c *Compressor) SetEncoder(encoding string, fn EncoderFunc) {
	encoding = strings.ToLower(encoding)
	if encoding == "" {
		panic("the encoding can not be empty")
	}
	if fn == nil {
		panic("attempted to set a nil encoder function")
	}

	// If we are adding a new encoder that is already registered, we have to
	// clear that one out first.
	delete(c.pooledEncoders, encoding)
	delete(c.encoders, encoding)

	// If the encoder supports Resetting (IoReseterWriter), then it can be pooled.
	encoder := fn(io.Discard, c.level)
	if _, ok := encoder.(ioResetterWriter); ok {
		pool := &sync.Pool{
			New: func() interface{} {
				return fn(io.Discard, c.level)
			},
		}
		c.pooledEncoders[encoding] = pool
	}
	// If the encoder is not in the pooledEncoders, add it to the normal encoders.
	if _, ok := c.pooledEncoders[encoding]; !ok {
		c.encoders[encoding] = fn
	}

	for i, v := range c.encodingPrecedence {
		if v == encoding {
			c.encodingPrecedence = append(c.encodingPrecedence[:i], c.encodingPrecedence[i+1:]...)
		}
	}

	c.encodingPrecedence = append([]string{encoding}, c.encodingPrecedence...)
}

// ServeHTTP returns the response from the orig file system, compressed if possible.
func (c *Compressor) ServeHTTP(w http.ResponseWriter, r *http.Request) {