Rust Requires Chilkat v11.0.0+

QuickBooks - Automatically Refresh Access Token with No User Interaction

See more QuickBooks Examples

Demonstrates how to automaticaly refresh an expired access token and retry the request after a 401 authorization error. Rust

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

// Get our previously obtained OAuth2 access token, which should contain JSON like this:
// {
//   "expires_in": 3600,
//   "x_refresh_token_expires_in": 8726400,
//   "refresh_token": "L011546037639r ... 3vR2DrbOmg0Sdagw",
//   "access_token": "eyJlbmMiOiJBMTI4Q0 ... oETJEMbeggg",
//   "token_type": "bearer"
// }

let json_token = chilkat::JsonObject::new();
let _ = json_token.load_file("qa_data/tokens/qb-access-token.json").is_ok();

let rest = chilkat::Rest::new();

// Connect using TLS.
// A single REST object, once connected, can be used for many Quickbooks REST API calls.
// The auto-reconnect indicates that if the already-established HTTPS connection is closed,
// then it will be automatically re-established as needed.
let b_auto_reconnect = true;
if rest.connect("sandbox-quickbooks.api.intuit.com", 443, true, b_auto_reconnect).is_err() {
    println!("{}", rest.last_error_text());
    return;
}

let sb_auth = chilkat::StringBuilder::new();
let _ = sb_auth.append("Bearer ");
let _ = sb_auth.append(&json_token.string_of("access_token").unwrap_or_default());
rest.set_authorization(&sb_auth.get_as_string().unwrap_or_default());

let _ = rest.add_header("Accept", "application/json");
rest.set_allow_header_folding(false);

// The company ID is 123146096291789
// The employee ID is 58
let Ok(mut response_body) = rest.full_request_no_body("GET", "/v3/company/123146096291789/employee/58?minorversion=45") else {
    println!("{}", rest.last_error_text());
    return;
};

// If we get a 401 authorization error, then it's likely because the access token expired.
// We can automatically refresh it without interaction from the user.
if rest.response_status_code() == 401 {

    let oauth2 = chilkat::OAuth2::new();

    oauth2.set_token_endpoint("https://oauth.platform.intuit.com/oauth2/v1/tokens/bearer");

    // Replace these with actual values.
    oauth2.set_client_id("QUICKBOOKS-CLIENT-ID");
    oauth2.set_client_secret("QUICKBOOKS-CLIENT-SECRET");

    // Get the "refresh_token"
    oauth2.set_refresh_token(&json_token.string_of("refresh_token").unwrap_or_default());

    // Send the HTTP POST to refresh the access token..
    if oauth2.refresh_access_token().is_err() {
        println!("{}", oauth2.last_error_text());
        return;
    }

    println!("New access token: {}", oauth2.access_token());

    // Update the JSON with the new tokens.
    let _ = json_token.update_string("access_token", &oauth2.access_token());

    // Save the new JSON access token response to a file.
    // The access + refresh tokens contained in this JSON will be needed for the next refresh.
    let sb_json = chilkat::StringBuilder::new();
    json_token.set_emit_compact(false);
    let _ = json_token.emit_sb(&sb_json);
    let _ = sb_json.write_file("qa_data/tokens/qb-access-token.json", "utf-8", false);

    println!("OAuth2 token refreshed!");
    println!("New Access Token = {}", oauth2.access_token());

    sb_auth.clear();
    let _ = sb_auth.append("Bearer ");
    let _ = sb_auth.append(&oauth2.access_token());
    rest.set_authorization(&sb_auth.get_as_string().unwrap_or_default());

    // Now retry the request with the refreshed access token...
    response_body = rest.full_request_no_body("GET", "/v3/company/123146096291789/employee/58?minorversion=45").unwrap_or_default();
    if !rest.last_method_success() {
        println!("{}", rest.last_error_text());
        return;
    }

}

// We should expect a 200 response if successful.
if rest.response_status_code() != 200 {
    println!("Request Header: ");
    println!("{}", rest.last_request_header());
    println!("----");
    println!("Response StatusCode = {}", rest.response_status_code());
    println!("Response StatusLine: {}", rest.response_status_text());
    println!("Response Header:");
    println!("{}", rest.response_header());
    println!("{}", response_body);
    return;
}

// Load the JSON response into a JSON object for parsing.
// A sample JSON response is shown below.
let json = chilkat::JsonObject::new();
let _ = json.load(&response_body);

// These will be used for parsing date/time strings..
let dtime = chilkat::DateTime::new();
let b_local_time = true;

// Show the JSON.   
json.set_emit_compact(false);
println!("{}", json.emit().unwrap_or_default());

// Get some information from the JSON..
println!("Name: {}", json.string_of("Employee.DisplayName").unwrap_or_default());
println!("Id: {}", json.string_of("Employee.Id").unwrap_or_default());
println!("City: {}", json.string_of("Employee.PrimaryAddr.City").unwrap_or_default());
println!("PostalCode: {}", json.string_of("Employee.PrimaryAddr.PostalCode").unwrap_or_default());

// Load the CreateTime into a CkDateTime...
let _ = dtime.set_from_timestamp(&json.string_of("Employee.MetaData.CreateTime").unwrap_or_default());
let dt = chilkat::DtObj::new();
dtime.to_dt_obj(b_local_time, &dt);

println!("{}/{}/{}  {}:{}", dt.month(), dt.day(), dt.year(), dt.hour(), dt.minute());

println!("Success.");

// Use this online tool to generate parsing code from sample JSON: 
// Generate Parsing Code from JSON

// ------------------------------------------------------
// The JSON response looks like this:

// {
//   "Employee": {
//     "SSN": "XXX-XX-XXXX",
//     "PrimaryAddr": {
//       "Id": "116",
//       "Line1": "45 N. Elm Street",
//       "City": "Middlefield",
//       "CountrySubDivisionCode": "CA",
//       "PostalCode": "93242"
//     },
//     "BillableTime": false,
//     "domain": "QBO",
//     "sparse": false,
//     "Id": "98",
//     "SyncToken": "0",
//     "MetaData": {
//       "CreateTime": "2015-07-24T09:34:35-07:00",
//       "LastUpdatedTime": "2015-07-24T09:34:35-07:00"
//     },
//     "GivenName": "Bill",
//     "FamilyName": "Miller",
//     "DisplayName": "Bill Miller",
//     "PrintOnCheckName": "Bill Miller",
//     "Active": true,
//     "PrimaryPhone": {
//       "FreeFormNumber": "234-525-1234"
//     }
//   },
//   "time": "2015-07-24T09:35:54.805-07:00"
// }