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(Node.js) OneDrive -- Upload Large Files with an Upload Session

Demonstrates how to upload large files with an upload session. See OneDrive Upload Session for more general information.

Note: This example requires Chilkat v9.5.0.68 or greater.

Install Chilkat for Node.js and Electron using npm at

Chilkat npm packages for Node.js

Chilkat npm packages for Electron

on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node11-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node11-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node11-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node11-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node11-linux64');
    }
} else if (os.platform() == 'darwin') {
    var chilkat = require('@chilkat/ck-node11-macosx');
}

function chilkatExample() {

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

    var http = new chilkat.Http();
    var success;

    // Use your previously obtained access token here:
    // See the following examples for getting an access token:
    //    Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint).
    //    Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint).
    //    Refresh Access Token (Azure AD v2.0 Endpoint).
    //    Refresh Access Token (Azure AD Endpoint).

    // (Make sure your token was obtained with the Files.ReadWrite scope.)
    http.AuthToken = "MICROSOFT_GRAPH_ACCESS_TOKEN";

    // ----------------------------------------------------------------------------
    // Step 1: Create an upload session

    // To begin a large file upload, your app must first request a new upload session. This creates a 
    // temporary storage location where the bytes of the file will be saved until the complete file is uploaded. 
    // Once the last byte of the file has been uploaded the upload session is completed and the final file is shown 
    // in the destination folder.

    // Send the following POST to create an upload session:
    // POST /v1.0/users/me/drive/root:/{path_to_item}:/createUploadSession

    http.SetUrlVar("path_to_item","/somefolder/big.zip");
    var url = "https://graph.microsoft.com/v1.0/me/drive/root:/{$path_to_item}:/createUploadSession";
    // resp: HttpResponse
    var resp = http.PostJson2(url,"application/json","{}");
    if (http.LastMethodSuccess !== true) {
        console.log(http.LastErrorText);
        return;
    }

    // If successful, a 200 status code is returned, with the session details (in JSON format).
    var jsonSession = new chilkat.JsonObject();
    jsonSession.EmitCompact = false;
    jsonSession.Load(resp.BodyStr);

    if (resp.StatusCode !== 200) {

        console.log(jsonSession.Emit());
        console.log("Response status = " + resp.StatusCode);

        return;
    }

    console.log(jsonSession.Emit());

    // A sample response:

    // 	{
    // 	  "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#microsoft.graph.uploadSession",
    // 	  "uploadUrl": "https://api.onedrive.com/rup/3a33fceb9b74cc15/eyJSZXNvdXJjZUlEI ... 65yDYUiS3JTDnnhqCHxw",
    // 	  "expirationDateTime": "2017-06-11T12:40:23.239Z",
    // 	  "nextExpectedRanges": [
    // 	    "0-"
    // 	  ]
    // 	}
    // 

    // ----------------------------------------------------------------------------
    // Step 2: Upload Data in Segments (a.k.a. Fragments or Chunks)

    // Microsoft states this requirement: Use a fragment size that is a multiple of 320 KiB (320 * 1024 bytes). 
    // Failing to use a fragment size that is a multiple of 320 KiB can result in large file transfers failing after the 
    // last fragment is uploaded.  (Note: This is a detail imposed by Microsoft's OneDrive server-side implementation.)

    var fragSize = 320 * 1024;
    var localFilePath = "qa_data/zips/big.zip";

    // Upload the file big.zip in 320KiB segments.
    var fac = new chilkat.FileAccess();
    var fileSize = fac.FileSize(localFilePath);

    // Open the file to get the number of fragments.
    success = fac.OpenForRead(localFilePath);
    if (success == false) {
        console.log(fac.LastErrorText);
        return;
    }

    var numFragments = fac.GetNumBlocks(fragSize);
    fac.FileClose();

    var i = 0;

    console.log("fileSize = " + fileSize);
    console.log("numFragments = " + numFragments);

    var uploadUrl = new chilkat.Url();
    uploadUrl.ParseUrl(jsonSession.StringOf("uploadUrl"));

    var json = new chilkat.JsonObject();
    json.EmitCompact = false;

    var req = new chilkat.HttpRequest();
    req.HttpVerb = "PUT";
    req.Path = uploadUrl.PathWithQueryParams;
    req.ContentType = "application/octet-stream";

    var sbOffset = new chilkat.StringBuilder();
    var sbNumBytes = new chilkat.StringBuilder();
    var sbRange = new chilkat.StringBuilder();

    // IMPORTANT: The uploadUrl is a temporary URL to be used to upload the fragment.
    // It requires no authentication (because the URL itself could only have been obtained from an authenticated
    // request to start the upload session).  Therefore, do not allow the upload URL to be publicly seen,
    // otherwise anybody could upload to your OneDrive.
    http.AuthToken = "";

    var bytesRemaining = fileSize;
    while (i < numFragments) {

        // The success response code for intermediate chunks is 202,
        // whereas the final chunk will have a 201 success response where
        // the response body is the JSON DriveItem.
        var chunkSize = fragSize;
        var expectedStatusCode = 202;
        if (bytesRemaining < chunkSize) {
            chunkSize = bytesRemaining;
            expectedStatusCode = 201;
        }

        console.log("  this chunkSize = " + chunkSize);

        // Indicate the fragment in the local file to be streamed in the upload.
        sbOffset.Clear();
        sbOffset.AppendInt(i * fragSize);
        sbNumBytes.Clear();
        sbNumBytes.AppendInt(chunkSize);
        req.StreamChunkFromFile(localFilePath,sbOffset.GetAsString(),sbNumBytes.GetAsString());

        // The Content-Range header field must be set for this fragment.  For example:
        // Content-Range: bytes 0-25/128
        sbRange.SetString("bytes start-end/fileSize");
        var numReplaced = sbRange.ReplaceI("start",i * fragSize);
        numReplaced = sbRange.ReplaceI("end",i * fragSize+chunkSize - 1);
        numReplaced = sbRange.ReplaceI("fileSize",fileSize);
        req.AddHeader("Content-Range",sbRange.GetAsString());
        console.log("  this content-range: " + sbRange.GetAsString());

        resp = http.SynchronousRequest(uploadUrl.Host,443,true,req);
        if (http.LastMethodSuccess !== true) {
            console.log(http.LastErrorText);
            return;
        }

        json.Load(resp.BodyStr);
        // A 202 response status code indicates success.
        if (resp.StatusCode !== expectedStatusCode) {

            console.log(json.Emit());
            console.log("Response status = " + resp.StatusCode);

            return;
        }

        console.log(json.Emit());
        console.log("---- Chunk " + i + " uploaded ----");

        bytesRemaining = bytesRemaining - chunkSize;
        i = i+1;
    }

    console.log("data uploaded.");

    // ----------------------------------------------------------------------------
    // Sample output for the above session:

    // {
    //   "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#microsoft.graph.uploadSession",
    //   "uploadUrl": "https://api.onedrive.com/rup/3a33fceb9b74cc15/eyJSZXNvd ... QoKK2iuh1A",
    //   "expirationDateTime": "2017-06-11T14:04:45.438Z",
    //   "nextExpectedRanges": [
    //     "0-"
    //   ]
    // }
    // 
    // fileSize = 1366807
    // numFragments = 5
    //   this chunkSize = 327680
    //   this content-range: bytes 0-327679/1366807
    // {
    //   "expirationDateTime": "2017-06-11T14:04:45.438Z",
    //   "nextExpectedRanges": [
    //     "327680-1366806"
    //   ]
    // }
    // 
    // ---- Chunk 0 uploaded ----
    //   this chunkSize = 327680
    //   this content-range: bytes 327680-655359/1366807
    // {
    //   "expirationDateTime": "2017-06-11T14:04:45.438Z",
    //   "nextExpectedRanges": [
    //     "655360-1366806"
    //   ]
    // }
    // 
    // ---- Chunk 1 uploaded ----
    //   this chunkSize = 327680
    //   this content-range: bytes 655360-983039/1366807
    // {
    //   "expirationDateTime": "2017-06-11T14:04:45.438Z",
    //   "nextExpectedRanges": [
    //     "983040-1366806"
    //   ]
    // }
    // 
    // ---- Chunk 2 uploaded ----
    //   this chunkSize = 327680
    //   this content-range: bytes 983040-1310719/1366807
    // {
    //   "expirationDateTime": "2017-06-11T14:04:45.438Z",
    //   "nextExpectedRanges": [
    //     "1310720-1366806"
    //   ]
    // }
    // 
    // ---- Chunk 3 uploaded ----
    //   this chunkSize = 56087
    //   this content-range: bytes 1310720-1366806/1366807
    // {
    //   "createdBy": {
    //     "application": {
    //       "displayName": "Chilkat",
    //       "id": "441c9990"
    //     },
    //     "user": {
    //       "id": "3a33fceb9b74cc15"
    //     }
    //   },
    //   "createdDateTime": "2017-06-04T14:04:47.247Z",
    //   "cTag": "aYzozQTMzRkNFQjlCNzRDQzE1ITQ4NjguMjU3",
    //   "eTag": "aM0EzM0ZDRUI5Qjc0Q0MxNSE0ODY4LjA",
    //   "id": "3A33FCEB9B74CC15!4868",
    //   "lastModifiedBy": {
    //     "application": {
    //       "displayName": "Chilkat",
    //       "id": "441c9990"
    //     },
    //     "user": {
    //       "id": "3a33fceb9b74cc15"
    //     }
    //   },
    //   "lastModifiedDateTime": "2017-06-04T14:04:47.247Z",
    //   "name": "big.zip",
    //   "parentReference": {
    //     "driveId": "3a33fceb9b74cc15",
    //     "id": "3A33FCEB9B74CC15!4862",
    //     "name": "someFolder",
    //     "path": "/drive/root:/someFolder"
    //   },
    //   "size": 1366807,
    //   "webUrl": "https://1drv.ms/u/s!ABXMdJvr_DM6pgQ",
    //   "file": {
    //     "hashes": {
    //       "sha1Hash": "252059AA13004220DB912B97D4D3FF9599CCD8D9"
    //     },
    //     "mimeType": "application/zip"
    //   },
    //   "fileSystemInfo": {
    //     "createdDateTime": "2017-06-04T14:04:47.246Z",
    //     "lastModifiedDateTime": "2017-06-04T14:04:47.246Z"
    //   },
    //   "tags": [
    //   ],
    //   "lenses": [
    //   ]
    // }
    // 
    // Response status = 201

}

chilkatExample();

 

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