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39 lines
1.0 KiB
39 lines
1.0 KiB
8 years ago
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// Copyright 2012 Google Inc. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package transport contains HTTP transports used to make
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// authenticated API requests.
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package transport
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import (
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"errors"
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"net/http"
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)
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// APIKey is an HTTP Transport which wraps an underlying transport and
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// appends an API Key "key" parameter to the URL of outgoing requests.
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type APIKey struct {
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// Key is the API Key to set on requests.
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Key string
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// Transport is the underlying HTTP transport.
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// If nil, http.DefaultTransport is used.
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Transport http.RoundTripper
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}
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func (t *APIKey) RoundTrip(req *http.Request) (*http.Response, error) {
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rt := t.Transport
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if rt == nil {
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rt = http.DefaultTransport
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if rt == nil {
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return nil, errors.New("googleapi/transport: no Transport specified or available")
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}
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}
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newReq := *req
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args := newReq.URL.Query()
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args.Set("key", t.Key)
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newReq.URL.RawQuery = args.Encode()
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return rt.RoundTrip(&newReq)
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}
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