(Go) Initiate Resumable Upload Session

See more Google Cloud Storage Examples

For more information, see https://cloud.google.com/storage/docs/performing-resumable-uploads

Chilkat Go Downloads Go Package for Windows, MacOS, Linux, Alpine Linux, Solaris

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    http := chilkat.NewHttp()

    jsonToken := chilkat.NewJsonObject()
    success := jsonToken.LoadFile("qa_data/tokens/googleCloudStorage.json")
    if success == false {
        fmt.Println(jsonToken.LastErrorText())
        http.DisposeHttp()
        jsonToken.DisposeJsonObject()
        return
    }

    jsonMetaData := chilkat.NewJsonObject()
    jsonMetaData.UpdateString("contentType","image/jpeg")

    // Adds the "Authorization: Bearer <access_token>" header..
    http.SetAuthToken(jsonToken.StringOf("access_token"))

    http.SetUrlVar("bucket_name","chilkat-bucket-b")
    http.SetUrlVar("object_name","penguins2.jpg")
    url := "https://storage.googleapis.com/upload/storage/v1/b/{$bucket_name}/o?uploadType=resumable&name={$object_name}"
    resp := http.PText("POST",url,*jsonMetaData.Emit(),"utf-8","application/json",false,false)
    if http.LastMethodSuccess() == false {
        fmt.Println(http.LastErrorText())
        http.DisposeHttp()
        jsonToken.DisposeJsonObject()
        jsonMetaData.DisposeJsonObject()
        return
    }

    statusCode := resp.StatusCode()
    fmt.Println("response status code = ", statusCode)

    var sessionUrl *string = new(string)
    *sessionUrl = ""

    if statusCode != 200 {
        fmt.Println(resp.BodyStr())
    } else {
        // The session URL will be used to upload the file in chunks, in subsequent HTTP POSTs...
        sessionUrl = resp.GetHeaderField("Location")
        fmt.Println("Session URL = ", *sessionUrl)
    }

    resp.DisposeHttpResponse()

    http.DisposeHttp()
    jsonToken.DisposeJsonObject()
    jsonMetaData.DisposeJsonObject()