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38 lines
1.0 KiB
38 lines
1.0 KiB
// 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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