mirror of
https://github.com/ceph/ceph-csi.git
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34 lines
1.2 KiB
Go
34 lines
1.2 KiB
Go
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/*
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Copyright 2019 The Kubernetes Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package filters
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import (
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"net/http"
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)
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// WithCacheControl sets the Cache-Control header to "no-cache, private" because all servers are protected by authn/authz.
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// see https://developers.google.com/web/fundamentals/performance/optimizing-content-efficiency/http-caching#defining_optimal_cache-control_policy
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func WithCacheControl(handler http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
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// Set the cache-control header if it is not already set
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if _, ok := w.Header()["Cache-Control"]; !ok {
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w.Header().Set("Cache-Control", "no-cache, private")
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}
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handler.ServeHTTP(w, req)
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})
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}
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