(Ruby) Salesforce OAuth2 Refresh Access Token

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

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

require '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.new()
success = jsonToken.LoadFile("qa_data/tokens/_salesforce.json")
if (success != true)
    print "Failed to load _salesforce.json" + "\n";
    exit
end

# 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.new()

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() + "\n";
    exit
end

# 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.new()
jsonToken.put_EmitCompact(false)
jsonToken.EmitSb(sbJson)
sbJson.WriteFile("qa_data/tokens/_salesforce.json","utf-8",false)

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

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