Rust

MercadoLibre Refresh OAuth2 Access Token

See more MercadoLibre Examples

Demonstrates how to refresh a MercadoLibre OAuth2 access token. The refresh does not require user interaction via a web browser. If an access token expires (typically with a 401 response code), a new access token can be automatically obtained by using the code in this example. Rust

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

// It is assumed we previously obtained an OAuth2 access token.
// This example loads the JSON access token file 
// saved by this example: Get MercadoLibre OAuth2 Access Token

let json_token = chilkat::JsonObject::new();
if json_token.load_file("qa_data/tokens/mercadolibre.json").is_err() {
    println!("Failed to load mercadolibre.json");
    return;
}

// The access token JSON looks like this:

// {
//   "access_token": "APP_USR-8133606632685744-060115-93e1fd8b5e767c51c238df347bd0b288-577628017",
//   "token_type": "bearer",
//   "expires_in": 21600,
//   "scope": "offline_access read write",
//   "user_id": 577625107,
//   "refresh_token": "TG-5ad522a286f1200006ac4ed1-577625007"
// }

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

oauth2.set_token_endpoint("https://api.mercadolibre.com/oauth/token");

// Replace these with actual values.
oauth2.set_client_id("MY_MERCADOLIBRE_APP_ID");
oauth2.set_client_secret("MY_MERCADOLIBRE_APP_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());
println!("New refresh token: {}", oauth2.refresh_token());

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

// Save the new JSON access token response to a file.
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/mercadolibre.json", "utf-8", false);

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