(Perl) Refresh eBay Application Access Token

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

Note: This example requires Chilkat v9.5.0.80 or greater. (This example was written on 21-August-2019, before v9.5.0.80 was released. If Contact Chilkat for a pre-release if the current Chilkat version is not yet at 9.5.0.80 or greater.)

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

# 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"
# }

$json = chilkat::CkJsonObject->new();
$success = $json->LoadFile("qa_data/tokens/ebay-access-token.json");
if ($success == 0) {
    print "Failed to load the existing ebay access token JSON." . "\r\n";
    exit;
}

$oauth2 = chilkat::CkOAuth2->new();

$oauth2->put_TokenEndpoint("https://api.sandbox.ebay.com/identity/v1/oauth2/token");

# Replace these with actual values.
$oauth2->put_ClientId("EBAY_CLIENT_ID");
$oauth2->put_ClientSecret("EBAY_CLIENT_SECRET");

# Get the "refresh_token"
$oauth2->put_RefreshToken($json->stringOf("refresh_token"));

# Send the HTTP POST to refresh the access token..
$success = $oauth2->RefreshAccessToken();
if ($success != 1) {
    print $oauth2->lastErrorText() . "\r\n";
    exit;
}

# Load the access token response into the JSON object 
$json->Load($oauth2->accessTokenResponse());

# 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->put_EmitCompact(0);
$json->WriteFile("qa_data/tokens/ebay-access-token.json");

print "OAuth2 authorization granted!" . "\r\n";
print "New Access Token = " . $oauth2->accessToken() . "\r\n";