(Node.js) S3 Download Specific Version of File

Demonstrates how to download a file from the Amazon S3 service using the versionId query parameter.

Note: This example requires Chilkat v9.5.0.89 or later. (A problem regarding AwsSubResources w/ downloads was fixed shortly after the v9.5.0.88 release.)

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

    var http = new chilkat.Http();

    http.AwsAccessKey = "AWS_ACCESS_KEY";
    http.AwsSecretKey = "AWS_SECRET_KEY";
    http.S3Ssl = true;
    http.AwsRegion = "us-east-1";
    http.AwsEndpoint = "s3.amazonaws.com";
    http.AwsSubResources = "versionId=x8UPzRsgskmbe55lEQvhLi25PQl2lcFH";

    var bucketName = "chilkat100";
    var objectName = "frenchUtf8.txt";
    var localFilePath = "qa_output/frenchUtf8.txt";

    var success = http.S3_DownloadFile(bucketName,objectName,localFilePath);

    if (success !== true) {
        console.log(http.LastErrorText);
    }
    else {
        console.log("File downloaded.");
    }


}

chilkatExample();