Zig

Refresh eBay Application Access Token

See more eBay Examples

This example shows how to get a new eBay REST API access token when the original is close to expiration. Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

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

    // The previously fetched eBay access token looks like this:

    // {
    //   "access_token": "v^1.1#i^1# ... HwSAAA=",
    //   "expires_in": 7200,
    //   "refresh_token": "v^1.1#i^1# ... FXjEyODQ=",
    //   "refresh_token_expires_in": 47304000,
    //   "token_type": "User Access Token"
    // }

    const json = try chilkat.JsonObject.init();
    defer json.deinit();
    json.loadFile("qa_data/tokens/ebay-access-token.json") catch {
        std.debug.print("Failed to load the existing ebay access token JSON.\n", .{});
        return;
    };

    const oauth2 = try chilkat.OAuth2.init();
    defer oauth2.deinit();

    oauth2.setTokenEndpoint("https://api.sandbox.ebay.com/identity/v1/oauth2/token");

    // Replace these with actual values.
    oauth2.setClientId("EBAY_CLIENT_ID");
    oauth2.setClientSecret("EBAY_CLIENT_SECRET");

    // Get the "refresh_token"
    oauth2.setRefreshToken(try json.stringOf(alloc, "refresh_token"));

    // Send the HTTP POST to refresh the access token..
    oauth2.refreshAccessToken() catch {
        std.debug.print("{s}\n", .{try oauth2.getLastErrorText(alloc)});
        return;
    };

    // Load the access token response into the JSON object
    json.load(try oauth2.getAccessTokenResponse(alloc)) catch {};

    // 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.
    json.setEmitCompact(false);
    json.writeFile("qa_data/tokens/ebay-access-token.json") catch {};

    std.debug.print("OAuth2 authorization granted!\n", .{});
    std.debug.print("New Access Token = {s}\n", .{try oauth2.getAccessToken(alloc)});
}