(Node.js) Walmart - Get Inventory for an Item

Demonstrates how to get inventory for an item and parse the result.

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() {

    // ---------------------------------------------------------------------------------------------------------
    // Note: This example is deprecated.  The Walmart API no longer uses the Signature method of authenticating.
    // Walmart now uses OAuth2.  
    // ---------------------------------------------------------------------------------------------------------

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

    // Sends the following GET request:
    // GET https://marketplace.walmartapis.com/v2/inventory?sku={SKU}

    var sbUrl = new chilkat.StringBuilder();
    var success = sbUrl.Append("https://marketplace.walmartapis.com/v2/inventory?sku={SKU}");
    var numReplaced = sbUrl.Replace("{SKU}","HOPP~904~51041");

    var requestMethod = "GET";

    // First we need to generate a signature for our request.
    // The signature needs to be re-generated for each new Walmart HTTP request.
    var authUtil = new chilkat.AuthUtil();

    var wmConsumerId = "WALMART_CONSUMER_ID";
    var wmPrivateKey = "WALMART_PRIVATE_KEY";
    var jsonStr = authUtil.WalmartSignature(sbUrl.GetAsString(),wmConsumerId,wmPrivateKey,requestMethod);
    if (authUtil.LastMethodSuccess !== true) {
        console.log(authUtil.LastErrorText);
        return;
    }

    // The JSON returned by WalmartSignature contains the values to be used in the following
    // header fields: WM_SEC.AUTH_SIGNATURE, WM_SEC.TIMESTAMP, and WM_QOS.CORRELATION_ID
    var json = new chilkat.JsonObject();
    json.Load(jsonStr);

    var http = new chilkat.Http();
    http.SetRequestHeader("WM_SVC.NAME","Walmart Marketplace");
    http.SetRequestHeader("WM_QOS.CORRELATION_ID",json.StringOf("correlation_id"));
    http.SetRequestHeader("WM_SEC.TIMESTAMP",json.StringOf("timestamp"));
    http.SetRequestHeader("WM_SEC.AUTH_SIGNATURE",json.StringOf("signature"));
    http.SetRequestHeader("WM_CONSUMER.ID",wmConsumerId);
    http.Accept = "application/xml";

    // Note: Do not explicitly set the "Host" header.  Chilkat will set it automatically.

    var xmlStr = http.QuickGetStr(sbUrl.GetAsString());
    if (http.LastMethodSuccess !== true) {
        console.log(http.LastErrorText);
        return;
    }

    var xml = new chilkat.Xml();
    xml.LoadXml(xmlStr);

    // A successful response should have a 200 response status
    if (http.LastStatus !== 200) {
        console.log(xml.GetXml());
        console.log("Response Status Code: " + http.LastStatus);
        console.log("Failed.");
        return;
    }

    // A sample XML response is shown below..
    console.log(xml.GetXml());
    console.log("--");

    // To get the quantity:
    var quantity = xml.GetChildIntValue("quantity|amount");
    console.log("quantity = " + quantity);

    // ---------------------------------------
    // Sample XML response
    // ---------------------------------------

    // <?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
    // <inventory xmlns="http://walmart.com/">
    //     <sku>HOPP~904~51041</sku>
    //     <quantity>
    //         <unit>EACH</unit>
    //         <amount>234</amount>
    //     </quantity>
    //     <fulfillmentLagTime>5</fulfillmentLagTime>
    // </inventory>

}

chilkatExample();