(Node.js) Upload File with User-Defined Metadata

Demonstrates how to upload a file with user-defined metadata to the Amazon S3 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, MacOS

var os = require('os');
if (os.platform() == 'win32') {  
  var chilkat = require('@chilkat/ck-node23-win64'); 
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node23-linux-arm');
    } else if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node23-linux-arm64');
    } else {
        var chilkat = require('@chilkat/ck-node23-linux-x64');
    }
} else if (os.platform() == 'darwin') {
  var chilkat = require('@chilkat/ck-node23-mac-universal');
}

function chilkatExample() {

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

    var http = new chilkat.Http();

    // Insert your AWS keys here:
    http.AwsAccessKey = "AWS_ACCESS_KEY";
    http.AwsSecretKey = "AWS_SECRET_KEY";

    var bucketName = "chilkat.ocean";
    var objectName = "seahorse.jpg";
    var localFilePath = "qa_data/jpg/seahorse.jpg";
    var contentType = "image/jpg";

    // User-defined metadata are name/value pairs, and are added to the HTTP request header.
    // Header names must begin with "x-amz-meta-" to distinguish them from other HTTP headers.
    // Note that Amazon S3 stores user-defined metadata keys in lowercase.

    // For example, to add genus=Hippocampus, we do this:
    http.SetRequestHeader("x-amz-meta-genus","Hippocampus");

    // Add a few more user-metadata key pairs.
    http.SetRequestHeader("x-amz-meta-species","big-belly seahorse");
    http.SetRequestHeader("x-amz-meta-habitat","shallow tropical and temperate waters");

    var success = http.S3_UploadFile(localFilePath,contentType,bucketName,objectName);

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


}

chilkatExample();