Go

Rabobank Refresh OAuth2 Access Token

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

    success := false

    // 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.NewJsonObject()
    success = json.LoadFile("qa_data/tokens/rabobank.json")
    if success != true {
        json.DisposeJsonObject()
        return
    }

    // {
    //   "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.NewHttpRequest()
    req.AddParam("grant_type","refresh_token")
    req.AddParam("refresh_token",*json.StringOf("refresh_token"))

    http := chilkat.NewHttp()

    // Causes the "Authorization: Basic BASE64(CLIENT_ID + ":" + CLIENT_SECRET)" header to be added..
    http.SetBasicAuth(true)
    http.SetLogin("YOUR_APP_CLIENT_ID")
    http.SetPassword("YOUR_APP_CLIENT_SECRET")

    req.SetHttpVerb("POST")
    req.SetContentType("application/x-www-form-urlencoded")

    resp := chilkat.NewHttpResponse()
    success = http.HttpReq("https://api-sandbox.rabobank.nl/openapi/sandbox/oauth2/token",req,resp)
    if success == false {
        fmt.Println(http.LastErrorText())
        json.DisposeJsonObject()
        req.DisposeHttpRequest()
        http.DisposeHttp()
        resp.DisposeHttpResponse()
        return
    }

    // Load the JSON response.
    json.Load(resp.BodyStr())
    json.SetEmitCompact(false)

    // Show the JSON response.
    fmt.Println(*json.Emit())

    fmt.Println("Response status code: ", resp.StatusCode())

    // If the response status code is not 200, then it's an error.
    if resp.StatusCode() != 200 {
        json.DisposeJsonObject()
        req.DisposeHttpRequest()
        http.DisposeHttp()
        resp.DisposeHttpResponse()
        return
    }

    // Save the refreshed access token JSON to a file for future requests.
    fac := chilkat.NewFileAccess()
    fac.WriteEntireTextFile("qa_data/tokens/rabobank.json",*json.Emit(),"utf-8",false)

    json.DisposeJsonObject()
    req.DisposeHttpRequest()
    http.DisposeHttp()
    resp.DisposeHttpResponse()
    fac.DisposeFileAccess()