Node.js

Upload Binary File from Memory

See more Google Drive Examples

This example demonstrates how to upload a binary file from memory. It uploads the file to a subdirectory of our choosing. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    success = true;

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

    //  This example uses a previously obtained access token having permission for the 
    //  Google Drive scope.

    var gAuth = new chilkat.AuthGoogle();
    gAuth.AccessToken = "GOOGLE-DRIVE-ACCESS-TOKEN";

    var rest = new chilkat.Rest();

    //  Connect using TLS.
    var bAutoReconnect = true;
    success = rest.Connect("www.googleapis.com",443,true,bAutoReconnect);

    //  Provide the authentication credentials (i.e. the access token)
    rest.SetAuthGoogle(gAuth);

    //  -------------------------------------------------------------------------
    //  A multipart upload to Google Drive needs a multipart/related Content-Type
    rest.AddHeader("Content-Type","multipart/related");

    //  Specify each part of the request.

    //  The 1st part is JSON with information about the file.
    rest.PartSelector = "1";
    rest.AddHeader("Content-Type","application/json; charset=UTF-8");

    //  Construct the JSON that will contain the metadata about the file data to be uploaded...
    var json = new chilkat.JsonObject();
    json.AppendString("name","hedgehogs.jpg");
    json.AppendString("description","A cute photo of two hedgehogs.");
    json.AppendString("mimeType","image/jpeg");

    //  To place the file in a folder, we must add a parents[] array to the JSON
    //  and add the folder ID.  
    //  In a previous example (see Build Local Metadata Cache
    //  we built a local cache to make it easy to lookup file IDs given a file path.
    //  Let's find the file ID for the folder "testFolder/abc/123"
    var gdCache = new chilkat.Cache();
    gdCache.Level = 0;
    gdCache.AddRoot("C:/ckCache/googleDrive");

    var folderId = gdCache.FetchText("testFolder/abc/123");
    if (gdCache.LastMethodSuccess !== true) {
        console.log("Filepath not found in cache.");
        return;
    }

    var parents = new chilkat.JsonArray();
    json.AppendArray2("parents",parents);

    parents.AddStringAt(-1,folderId);

    rest.SetMultipartBodyString(json.Emit());

    //  The 2nd part is the file content, which will contain the binary image data.
    rest.PartSelector = "2";
    rest.AddHeader("Content-Type","image/jpeg");

    var fac = new chilkat.FileAccess();

    //  Read a JPG file from the local filesystem.
    jpgBytes = fac.ReadEntireFile("qa_data/jpg/hedgehogs.jpg");

    //  Add the bytes to our upload
    rest.SetMultipartBodyBinary(jpgBytes);

    var jsonResponse = rest.FullRequestMultipart("POST","/upload/drive/v3/files?uploadType=multipart");
    if (rest.LastMethodSuccess == false) {
        console.log(rest.LastErrorText);
        return;
    }

    //  A successful response will have a status code equal to 200.
    if (rest.ResponseStatusCode !== 200) {
        console.log("response status code = " + rest.ResponseStatusCode);
        console.log("response status text = " + rest.ResponseStatusText);
        console.log("response header: " + rest.ResponseHeader);
        console.log("response JSON: " + jsonResponse);
        return;
    }

    //  Show the JSON response.
    json.Load(jsonResponse);

    //  Show the full JSON response.
    json.EmitCompact = false;
    console.log(json.Emit());

    //  A successful response looks like this:
    //  {
    //    "kind": "drive#file",
    //    "id": "0B53Q6OSTWYoldmJ0Z3ZqT2x5MFk",
    //    "name": "hedgehogs.jpg",
    //    "mimeType": "image/jpeg"
    //  }

    //  Get the fileId:
    console.log("fileId: " + json.StringOf("id"));

}

chilkatExample();