(Node.js) REST File Streaming Upload

Demonstrates how to stream the REST body from a file. This example demonstrates a REST upload to the Azure Cloud Storage service.

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-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

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

    var rest = new chilkat.Rest();

    // Connect to the Azure Storage Blob Service
    var bTls = true;
    var port = 443;
    var bAutoReconnect = true;
    // In this example, the storage account name is "chilkat".
    var success = rest.Connect("chilkat.blob.core.windows.net",port,bTls,bAutoReconnect);
    if (success !== true) {
        console.log(rest.LastErrorText);
        return;
    }

    // Provide Azure Cloud credentials for the REST call.
    var azAuth = new chilkat.AuthAzureStorage();
    azAuth.AccessKey = "AZURE_ACCESS_KEY";
    // The account name used here should match the 1st part of the domain passed in the call to Connect (above).
    azAuth.Account = "chilkat";
    azAuth.Scheme = "SharedKey";
    azAuth.Service = "Blob";
    // This causes the "x-ms-version: 2021-08-06" header to be automatically added.
    azAuth.XMsVersion = "2021-08-06";
    success = rest.SetAuthAzureStorage(azAuth);

    // Set some request headers.
    success = rest.AddHeader("x-ms-blob-content-disposition","attachment; filename=\"hamlet.xml\"");
    success = rest.AddHeader("x-ms-blob-type","BlockBlob");
    success = rest.AddHeader("x-ms-meta-m1","v1");
    success = rest.AddHeader("x-ms-meta-m2","v2");

    // Note: The application does not need to explicitly set the following
    // headers: x-ms-date, Authorization, and Content-Length.  These headers
    // are automatically set by Chilkat.

    var fileStream = new chilkat.Stream();
    fileStream.SourceFile = "qa_data/xml/hamlet.xml";

    // Upload to the Azure Cloud Storage service.
    // The file is streamed, so the full file never has to completely reside in memory.
    // The file is uploaded to the container named "test".
    var responseStr = rest.FullRequestStream("PUT","/test/hamlet.xml",fileStream);
    if (rest.LastMethodSuccess !== true) {
        console.log(rest.LastErrorText);
        return;
    }

    // When successful, the Azure Storage service will respond with a 201 response code,
    // with an empty body.  Therefore, in the success condition, the responseStr is empty.
    if (rest.ResponseStatusCode == 201) {
        console.log("File uploaded.");
    }
    else {
        // Examine the request/response to see what happened.
        console.log("response status code = " + rest.ResponseStatusCode);
        console.log("response status text = " + rest.ResponseStatusText);
        console.log("response header: " + rest.ResponseHeader);
        console.log("response body (if any): " + responseStr);
        console.log("---");
        console.log("LastRequestStartLine: " + rest.LastRequestStartLine);
        console.log("LastRequestHeader: " + rest.LastRequestHeader);
    }


}

chilkatExample();