(CkPython) Salesforce OAuth2 Refresh Access Token

See more OAuth2 Examples

Note: Use Chilkat v10.1.2 or later for this example.

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

import sys
import chilkat

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

# It is assumed we previously obtained an OAuth2 access token.
# This example loads the JSON access token file 
# saved by this example: Get SalesForce OAuth2 Access Token via Authorization Flow

jsonToken = chilkat.CkJsonObject()
success = jsonToken.LoadFile("qa_data/tokens/_salesforce.json")
if (success != True):
    print("Failed to load _salesforce.json")
    sys.exit()

# This is an example of a Salesforce OAuth2 access token to be refreshed:

# {
#   "access_token": "00D41000....uLZBpT6",
#   "refresh_token": "5Aep....25xdGgkrV",
#   "signature": "cjTbSc5DvcKpaMoRTzuQTJLb1tcMw8LEO01flq4aMD4=",
#   "scope": "refresh_token id",
#   "instance_url": "https://d41000000f8a0eak-dev-ed.my.salesforce.com",
#   "id": "https://login.salesforce.com/id/00D41000000F8A0EAK/005410000....xAAE",
#   "token_type": "Bearer",
#   "issued_at": "1738348388166"
# }

oauth2 = chilkat.CkOAuth2()

oauth2.put_TokenEndpoint("https://login.salesforce.com/services/oauth2/token")

# Replace this with your actual client ID (Consumer Key)
oauth2.put_ClientId("CLIENT_ID")

# Note: The client secret is not required because we configured our Connected App
# to not require it for the refresh flow.  See the screenshot below.

# Get the "refresh_token"
oauth2.put_RefreshToken(jsonToken.stringOf("refresh_token"))

# Send the HTTP POST to refresh the access token..
success = oauth2.RefreshAccessToken()
if (success != True):
    print(oauth2.lastErrorText())
    sys.exit()

# The response contains a new access token, but we must keep
# our existing refresh token for when we need to refresh again in the future.
jsonToken.UpdateString("access_token",oauth2.accessToken())

# Save the new JSON access token response to a file.
sbJson = chilkat.CkStringBuilder()
jsonToken.put_EmitCompact(False)
jsonToken.EmitSb(sbJson)
sbJson.WriteFile("qa_data/tokens/_salesforce.json","utf-8",False)

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

# --------------------------------------------------------------------------
# Here's a screenshot of a Salesforce Connected App 
# which does not requires the secret for the authorization or refresh flow.
#