45 lines
1,000 B
Go
45 lines
1,000 B
Go
package middlewares
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import (
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"context"
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"net/http"
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)
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const (
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backendNameQueryParam = "connector_id"
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backendCtxKeyName = "backendName"
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)
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type BackendFromRequestMiddleware struct {
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h http.Handler
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}
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func (m *BackendFromRequestMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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if r.URL.Path != "/authorize" {
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m.h.ServeHTTP(w, r)
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return
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}
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if err := r.ParseForm(); err != nil {
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// TODO: handle this better
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w.WriteHeader(http.StatusBadRequest)
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return
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}
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backendName := r.Form.Get(backendNameQueryParam)
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// TODO this should be explicitly handled
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if backendName == "" {
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w.WriteHeader(http.StatusBadRequest)
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w.Write([]byte("no backend id provided"))
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return
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}
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// TODO we should test that this backend actually exists here
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ctx := context.WithValue(r.Context(), backendCtxKeyName, backendName)
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m.h.ServeHTTP(w, r.WithContext(ctx))
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}
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func WithBackendFromRequestMiddleware(input http.Handler) http.Handler {
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return &BackendFromRequestMiddleware{h: input}
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}
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