mirror of https://github.com/portainer/portainer
38 lines
827 B
Go
38 lines
827 B
Go
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package handler
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import (
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"net/http"
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"strings"
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)
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// FileHandler represents an HTTP API handler for managing static files.
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type FileHandler struct {
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http.Handler
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}
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// NewFileHandler returns a new instance of FileHandler.
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func NewFileHandler(assetPath string) *FileHandler {
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h := &FileHandler{
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Handler: http.FileServer(http.Dir(assetPath)),
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}
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return h
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}
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func isHTML(acceptContent []string) bool {
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for _, accept := range acceptContent {
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if strings.Contains(accept, "text/html") {
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return true
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}
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}
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return false
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}
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func (fileHandler *FileHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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if !isHTML(r.Header["Accept"]) {
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w.Header().Set("Cache-Control", "max-age=31536000")
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} else {
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w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
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}
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fileHandler.Handler.ServeHTTP(w, r)
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}
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