(CkPython) Rabobank Refresh OAuth2 Access Token

Demonstrates how to refresh an expired Rabobank OAuth2 access token. (No interactive user interaction is required to refresh an access token.)

For more information, see https://developer.rabobank.nl/implementoauth2

Chilkat Python Downloads install with pip pip3 install chilkat or download... Python Module for Windows, MacOS, Linux, Alpine Linux, Solaris

import sys
import chilkat

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

# We previously obtained an access token and saved the JSON to a file using this example:
# Get Rabobank OAuth2 Access Token

json = chilkat.CkJsonObject()
success = json.LoadFile("qa_data/tokens/rabobank.json")
if (success != True):
    sys.exit()

# {
#   "token_type": "Bearer",
#   "access_token": "AAIkYTU0ZWM ... sxE0KL0HHWw",
#   "expires_in": 3600,
#   "consented_on": 1584641121,
#   "scope": "ais.balances.read ais.transactions.read-90days ais.transactions.read-history",
#   "refresh_token": "AAJXXSdN ... Uiblz9ILkxNBlytRGA",
#   "refresh_token_expires_in": 157784760,
#   "expires_on": "1584644722"
# }

# Refresh the access token by sending a POST like this:
# 

# POST /oauth2/token
# Headers:
#     Content-Type: application/x-www-form-urlencoded
#     Authorization: Basic BASE64(CLIENT_ID + ":" + CLIENT_SECRET)
# 
# Body (x-www-form-urlencoded):
#     grant_type: refresh_token
#     refresh_token: REFRESH_TOKEN

req = chilkat.CkHttpRequest()
req.AddParam("grant_type","refresh_token")
req.AddParam("refresh_token",json.stringOf("refresh_token"))

http = chilkat.CkHttp()

# Causes the "Authorization: Basic BASE64(CLIENT_ID + ":" + CLIENT_SECRET)" header to be added..
http.put_BasicAuth(True)
http.put_Login("YOUR_APP_CLIENT_ID")
http.put_Password("YOUR_APP_CLIENT_SECRET")

# resp is a CkHttpResponse
resp = http.PostUrlEncoded("https://api-sandbox.rabobank.nl/openapi/sandbox/oauth2/token",req)
if (http.get_LastMethodSuccess() != True):
    print(http.lastErrorText())
    sys.exit()

# Load the JSON response.
json.Load(resp.bodyStr())
json.put_EmitCompact(False)

# Show the JSON response.
print(json.emit())

print("Response status code: " + str(resp.get_StatusCode()))

# If the response status code is not 200, then it's an error.
if (resp.get_StatusCode() != 200):
    sys.exit()

# Save the refreshed access token JSON to a file for future requests.
fac = chilkat.CkFileAccess()
fac.WriteEntireTextFile("qa_data/tokens/rabobank.json",json.emit(),"utf-8",False)