PowerBuilder

Salesforce OAuth2 Refresh Access Token

See more OAuth2 Examples

Demonstrates how to refresh a Salesforce Access Token.

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

PowerBuilder

integer li_rc
long li_Success
oleobject loo_JsonToken
oleobject loo_Oauth2
oleobject loo_SbJson

li_Success = 0

//  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

loo_JsonToken = create oleobject
li_rc = loo_JsonToken.ConnectToNewObject("Chilkat.JsonObject")
if li_rc < 0 then
    destroy loo_JsonToken
    MessageBox("Error","Connecting to COM object failed")
    return
end if
li_Success = loo_JsonToken.LoadFile("qa_data/tokens/_salesforce.json")
if li_Success <> 1 then
    Write-Debug "Failed to load _salesforce.json"
    destroy loo_JsonToken
    return
end if

//  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"
//  }

loo_Oauth2 = create oleobject
li_rc = loo_Oauth2.ConnectToNewObject("Chilkat.OAuth2")

loo_Oauth2.TokenEndpoint = "https://login.salesforce.com/services/oauth2/token"

//  Replace this with your actual client ID (Consumer Key)
loo_Oauth2.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"
loo_Oauth2.RefreshToken = loo_JsonToken.StringOf("refresh_token")

//  Send the HTTP POST to refresh the access token..
li_Success = loo_Oauth2.RefreshAccessToken()
if li_Success <> 1 then
    Write-Debug loo_Oauth2.LastErrorText
    destroy loo_JsonToken
    destroy loo_Oauth2
    return
end if

//  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.
loo_JsonToken.UpdateString("access_token",loo_Oauth2.AccessToken)

//  Save the new JSON access token response to a file.
loo_SbJson = create oleobject
li_rc = loo_SbJson.ConnectToNewObject("Chilkat.StringBuilder")

loo_JsonToken.EmitCompact = 0
loo_JsonToken.EmitSb(loo_SbJson)
loo_SbJson.WriteFile("qa_data/tokens/_salesforce.json","utf-8",0)

Write-Debug "OAuth2 authorization granted!"
Write-Debug "New Access Token = " + loo_Oauth2.AccessToken

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


destroy loo_JsonToken
destroy loo_Oauth2
destroy loo_SbJson