34 lines
815 B
Go
34 lines
815 B
Go
package middlewares
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import (
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"compress/gzip"
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"net/http"
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"strings"
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"github.com/NYTimes/gziphandler"
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"github.com/containous/traefik/log"
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)
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// Compress is a middleware that allows to compress the response
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type Compress struct{}
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// ServeHTTP is a function used by Negroni
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func (c *Compress) ServeHTTP(rw http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
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contentType := r.Header.Get("Content-Type")
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if strings.HasPrefix(contentType, "application/grpc") {
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next.ServeHTTP(rw, r)
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} else {
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gzipHandler(next).ServeHTTP(rw, r)
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}
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}
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func gzipHandler(h http.Handler) http.Handler {
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wrapper, err := gziphandler.GzipHandlerWithOpts(
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gziphandler.CompressionLevel(gzip.DefaultCompression),
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gziphandler.MinSize(gziphandler.DefaultMinSize))
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if err != nil {
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log.Error(err)
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}
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return wrapper(h)
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}
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