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@ -1,116 +0,0 @@ |
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package util |
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import ( |
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"bytes" |
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"fmt" |
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"github.com/valyala/fasthttp" |
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"sync" |
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"time" |
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) |
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var ( |
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fastClient = &fasthttp.Client{ |
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NoDefaultUserAgentHeader: true, // Don't send: User-Agent: fasthttp
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MaxConnsPerHost: 1024, |
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ReadBufferSize: 4096, // Make sure to set this big enough that your whole request can be read at once.
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WriteBufferSize: 64 * 1024, // Same but for your response.
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ReadTimeout: time.Second, |
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WriteTimeout: time.Second, |
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MaxIdleConnDuration: time.Minute, |
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DisableHeaderNamesNormalizing: true, // If you set the case on your headers correctly you can enable this.
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DialDualStack: true, |
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} |
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// Put everything in pools to prevent garbage.
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bytesPool = sync.Pool{ |
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New: func() interface{} { |
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b := make([]byte, 0) |
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return &b |
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}, |
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} |
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responsePool = sync.Pool{ |
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New: func() interface{} { |
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return make(chan *fasthttp.Response) |
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}, |
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} |
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) |
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func FastGet(url string) ([]byte, bool, error) { |
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req := fasthttp.AcquireRequest() |
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res := fasthttp.AcquireResponse() |
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defer fasthttp.ReleaseRequest(req) |
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defer fasthttp.ReleaseResponse(res) |
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req.SetRequestURIBytes([]byte(url)) |
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req.Header.Add("Accept-Encoding", "gzip") |
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err := fastClient.Do(req, res) |
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if err != nil { |
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return nil, true, err |
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} |
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var data []byte |
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contentEncoding := res.Header.Peek("Content-Encoding") |
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if bytes.Compare(contentEncoding, []byte("gzip")) == 0 { |
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data, err = res.BodyGunzip() |
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} else { |
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data = res.Body() |
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} |
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out := make([]byte, len(data)) |
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copy(out, data) |
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if res.StatusCode() >= 400 { |
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retryable := res.StatusCode() >= 500 |
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return nil, retryable, fmt.Errorf("%s: %d", url, res.StatusCode()) |
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} |
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if err != nil { |
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return nil, false, err |
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} |
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return out, false, nil |
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} |
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func FastReadUrlAsStream(fileUrl string, cipherKey []byte, isContentGzipped bool, isFullChunk bool, offset int64, size int, fn func(data []byte)) (retryable bool, err error) { |
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if cipherKey != nil { |
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return readEncryptedUrl(fileUrl, cipherKey, isContentGzipped, isFullChunk, offset, size, fn) |
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} |
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req := fasthttp.AcquireRequest() |
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res := fasthttp.AcquireResponse() |
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defer fasthttp.ReleaseRequest(req) |
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defer fasthttp.ReleaseResponse(res) |
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req.SetRequestURIBytes([]byte(fileUrl)) |
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if isFullChunk { |
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req.Header.Add("Accept-Encoding", "gzip") |
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} else { |
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req.Header.Add("Range", fmt.Sprintf("bytes=%d-%d", offset, offset+int64(size)-1)) |
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} |
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if err = fastClient.Do(req, res); err != nil { |
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return true, err |
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} |
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if res.StatusCode() >= 400 { |
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retryable = res.StatusCode() >= 500 |
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return retryable, fmt.Errorf("%s: %d", fileUrl, res.StatusCode()) |
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} |
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contentEncoding := res.Header.Peek("Content-Encoding") |
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if bytes.Compare(contentEncoding, []byte("gzip")) == 0 { |
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bodyData, err := res.BodyGunzip() |
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if err != nil { |
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return false, err |
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} |
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fn(bodyData) |
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} else { |
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fn(res.Body()) |
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} |
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return false, nil |
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} |
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