mirror of https://github.com/knative/docs.git
56 lines
1.2 KiB
Go
56 lines
1.2 KiB
Go
/*
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Copyright 2021 The CloudEvents Authors
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SPDX-License-Identifier: Apache-2.0
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*/
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package http
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import (
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"context"
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"github.com/cloudevents/sdk-go/v2/binding"
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"net/http"
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"net/textproto"
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"strings"
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"unicode"
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"github.com/cloudevents/sdk-go/v2/binding/spec"
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)
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var attributeHeadersMapping map[string]string
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type customHeaderKey int
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const (
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headerKey customHeaderKey = iota
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)
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func init() {
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attributeHeadersMapping = make(map[string]string)
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for _, v := range specs.Versions() {
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for _, a := range v.Attributes() {
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if a.Kind() == spec.DataContentType {
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attributeHeadersMapping[a.Name()] = ContentType
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} else {
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attributeHeadersMapping[a.Name()] = textproto.CanonicalMIMEHeaderKey(prefix + a.Name())
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}
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}
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}
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}
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func extNameToHeaderName(name string) string {
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var b strings.Builder
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b.Grow(len(name) + len(prefix))
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b.WriteString(prefix)
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b.WriteRune(unicode.ToUpper(rune(name[0])))
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b.WriteString(name[1:])
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return b.String()
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}
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func HeaderFrom(ctx context.Context) http.Header {
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return binding.GetOrDefaultFromCtx(ctx, headerKey, make(http.Header)).(http.Header)
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}
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func WithCustomHeader(ctx context.Context, header http.Header) context.Context {
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return context.WithValue(ctx, headerKey, header)
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}
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