(Go) Dropbox File Streaming Upload

Upload a file to Drobox using a file stream. This example can upload files up to 150MB. Larger files must be uploaded with an upload session (upload_session/start).

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

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

    // A Dropbox access token should have been previously obtained.
    // Dropbox access tokens do not expire.
    // See Dropbox Access Token.

    rest := chilkat.NewRest()

    // Connect to Dropbox
    success := rest.Connect("content.dropboxapi.com",443,true,true)
    if success != true {
        fmt.Println(rest.LastErrorText())
        rest.DisposeRest()
        return
    }

    // Add request headers.
    rest.AddHeader("Content-Type","application/octet-stream")
    rest.AddHeader("Authorization","Bearer DROPBOX_ACCESS_TOKEN")

    // The upload "parameters" contained in JSON passed in an HTTP request header.
    // This is the JSON to be added in this example:
    // { 
    //    "path": "/Homework/lit/hamlet.xml",
    //    "mode": "add",
    //    "autorename": true,
    //    "mute": false
    // }

    json := chilkat.NewJsonObject()
    json.AppendString("path","/Homework/lit/hamlet.xml")
    json.AppendString("mode","add")
    json.AppendBool("autorename",true)
    json.AppendBool("mute",false)
    rest.AddHeader("Dropbox-API-Arg",*json.Emit())

    // Almost ready to go...
    // Let's setup a file stream to point to a file.
    fileStream := chilkat.NewStream()
    fileStream.SetSourceFile("qa_data/xml/hamlet.xml")

    // Do the upload.  The URL is https://content.dropboxapi.com/2/files/upload.
    // We already connected to content.dropboxapi.com using TLS (i.e. HTTPS),
    // so now we only need to specify the path "/2/files/upload".

    // Note: The file is streamed directly from disk.  (The entire
    // file will not be loaded into memory.)
    responseStr := rest.FullRequestStream("POST","/2/files/upload",fileStream)
    if rest.LastMethodSuccess() != true {
        fmt.Println(rest.LastErrorText())
        rest.DisposeRest()
        json.DisposeJsonObject()
        fileStream.DisposeStream()
        return
    }

    // When successful, Dropbox responds with a 200 response code.
    if rest.ResponseStatusCode() != 200 {
        // Examine the request/response to see what happened.
        fmt.Println("response status code = ", rest.ResponseStatusCode())
        fmt.Println("response status text = ", rest.ResponseStatusText())
        fmt.Println("response header: ", rest.ResponseHeader())
        fmt.Println("response body (if any): ", *responseStr)
        fmt.Println("---")
        fmt.Println("LastRequestStartLine: ", rest.LastRequestStartLine())
        fmt.Println("LastRequestHeader: ", rest.LastRequestHeader())
        rest.DisposeRest()
        json.DisposeJsonObject()
        fileStream.DisposeStream()
        return
    }

    // The response is JSON.
    jsonResp := chilkat.NewJsonObject()
    jsonResp.SetEmitCompact(false)
    jsonResp.Load(*responseStr)

    // Show the JSON response.
    fmt.Println(*jsonResp.Emit())

    // Returns JSON that looks like this:
    // { 
    //   "name": "hamlet.xml",
    //   "path_lower": "/homework/lit/hamlet.xml",
    //   "path_display": "/Homework/lit/hamlet.xml",
    //   "id": "id:74FkdeNuyKAAAAAAAAAAAQ",
    //   "client_modified": "2016-06-02T23:19:00Z",
    //   "server_modified": "2016-06-02T23:19:00Z",
    //   "rev": "9482db15f",
    //   "size": 279658
    // }

    // Sample code to get data from the JSON response:
    size := jsonResp.IntOf("size")
    fmt.Println("size = ", size)

    rev := jsonResp.StringOf("rev")
    fmt.Println("rev = ", *rev)

    clientModified := jsonResp.StringOf("client_modified")
    ckdt := chilkat.NewCkDateTime()
    ckdt.SetFromTimestamp(*clientModified)
    bLocalTime := true
    dt := ckdt.GetDtObj(bLocalTime)
    fmt.Println(dt.Day(), "/", dt.Month(), "/", dt.Year(), " ", dt.Hour(), ":", dt.Minute())
    dt.DisposeDtObj()

    rest.DisposeRest()
    json.DisposeJsonObject()
    fileStream.DisposeStream()
    jsonResp.DisposeJsonObject()
    ckdt.DisposeCkDateTime()