Rust

Amazon SP-API Request an LWA access token

See more Amazon SP-API Examples

Request an LWA access token, make a secure HTTP POST to the LWA authentication server (https://api.amazon.com/auth/o2/token) Rust

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

let http = chilkat::Http::new();

// Implements the following CURL command:

// curl -X POST https://example.com/auth/o2/token \
//   -H "Host: api.amazon.com" \
//   -H "Content-Type: application/x-www-form-urlencoded;charset=UTF-8" \
//   -d "grant_type=refresh_token" \
//   -d "refresh_token=Aztr|..." \
//   -d "client_id=foodev" \
//   -d "client_secret=Y76SDl2F"

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

let req = chilkat::HttpRequest::new();
req.add_param("grant_type", "refresh_token");
req.add_param("refresh_token", "Aztr|...");
req.add_param("client_id", "foodev");
req.add_param("client_secret", "Y76SDl2F");

req.add_header("Host", "api.amazon.com");

req.set_http_verb("POST");
req.set_content_type("application/x-www-form-urlencoded");

let resp = chilkat::HttpResponse::new();
if http.http_req("https://api.amazon.com/auth/o2/token", &req, &resp).is_err() {
    println!("{}", http.last_error_text());
    return;
}

let status_code = resp.status_code();
println!("Status Code = {}", status_code);

let json = chilkat::JsonObject::new();
let _ = json.load(&resp.body_str());

json.set_emit_compact(false);
println!("{}", json.emit().unwrap_or_default());

if status_code != 200 {
    println!("Failed.");
    return;
}

// Success returns this JSON:

// {
//   "access_token": "Atza|...",
//   "refresh_token": "Atzr|...",
//   "token_type": "bearer",
//   "expires_in": 3600
// }

// Save the JSON token to a file for use in subsequent calls.
// (this example is passing a relative file path.  You don't need to save to a file
// if, for example, you keep the access token in-memory for subsequent use...)
let _ = json.write_file("qa_data/tokens/sp_api_lwa_token.json").is_ok();

println!("access_token: {}", json.string_of("access_token").unwrap_or_default());
println!("Success.");