forked from TrueCloudLab/lego
64 lines
1.5 KiB
Go
64 lines
1.5 KiB
Go
package internal
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import (
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"errors"
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"net/http"
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)
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const apiKeyHeader = "Api-Key"
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// TokenTransport HTTP transport for API authentication.
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type TokenTransport struct {
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apiKey string
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// Transport is the underlying HTTP transport to use when making requests.
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// It will default to http.DefaultTransport if nil.
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Transport http.RoundTripper
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}
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// NewTokenTransport Creates a HTTP transport for API authentication.
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func NewTokenTransport(apiKey string) (*TokenTransport, error) {
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if apiKey == "" {
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return nil, errors.New("credentials missing: API key")
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}
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return &TokenTransport{apiKey: apiKey}, nil
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}
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// RoundTrip executes a single HTTP transaction.
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func (t *TokenTransport) RoundTrip(req *http.Request) (*http.Response, error) {
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enrichedReq := &http.Request{}
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*enrichedReq = *req
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enrichedReq.Header = make(http.Header, len(req.Header))
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for k, s := range req.Header {
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enrichedReq.Header[k] = append([]string(nil), s...)
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}
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if t.apiKey != "" {
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enrichedReq.Header.Set(apiKeyHeader, t.apiKey)
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}
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return t.transport().RoundTrip(enrichedReq)
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}
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func (t *TokenTransport) transport() http.RoundTripper {
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if t.Transport != nil {
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return t.Transport
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}
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return http.DefaultTransport
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}
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// Client Creates a new HTTP client.
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func (t *TokenTransport) Client() *http.Client {
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return &http.Client{Transport: t}
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}
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// Wrap wraps an HTTP client Transport with the TokenTransport.
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func (t *TokenTransport) Wrap(client *http.Client) *http.Client {
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backup := client.Transport
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t.Transport = backup
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client.Transport = t
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return client
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}
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