(Ruby) 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 Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require '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 == false)
    print "Failed to load the existing ebay access token JSON." + "\n";
    exit
end

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 != true)
    print oauth2.lastErrorText() + "\n";
    exit
end

# 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(false)
json.WriteFile("qa_data/tokens/ebay-access-token.json")

print "OAuth2 authorization granted!" + "\n";
print "New Access Token = " + oauth2.accessToken() + "\n";