(MFC) Walmart - Get Inventory for an Item

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

Note: This example requires Chilkat v9.5.0.67 or greater.

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkStringBuilder.h>
#include <CkAuthUtil.h>
#include <CkJsonObject.h>
#include <CkHttp.h>
#include <CkXml.h>

void ChilkatSample(void)
    {
    CkString strOut;

    // 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}

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

    const char *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.
    CkAuthUtil authUtil;

    const char *wmConsumerId = "WALMART_CONSUMER_ID";
    const char *wmPrivateKey = "WALMART_PRIVATE_KEY";
    const char *jsonStr = authUtil.walmartSignature(sbUrl.getAsString(),wmConsumerId,wmPrivateKey,requestMethod);
    if (authUtil.get_LastMethodSuccess() != true) {
        strOut.append(authUtil.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        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
    CkJsonObject json;
    json.Load(jsonStr);

    CkHttp 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.put_Accept("application/xml");

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

    const char *xmlStr = http.quickGetStr(sbUrl.getAsString());
    if (http.get_LastMethodSuccess() != true) {
        strOut.append(http.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    CkXml xml;
    xml.LoadXml(xmlStr);

    // A successful response should have a 200 response status
    if (http.get_LastStatus() != 200) {
        strOut.append(xml.getXml());
        strOut.append("\r\n");
        strOut.append("Response Status Code: ");
        strOut.appendInt(http.get_LastStatus());
        strOut.append("\r\n");
        strOut.append("Failed.");
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // A sample XML response is shown below..
    strOut.append(xml.getXml());
    strOut.append("\r\n");
    strOut.append("--");
    strOut.append("\r\n");

    // To get the quantity:
    int quantity = xml.GetChildIntValue("quantity|amount");
    strOut.append("quantity = ");
    strOut.appendInt(quantity);
    strOut.append("\r\n");

    // ---------------------------------------
    // 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>


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }