{
"access_token":"e...2",
"instance_url":"http://m.../..c"
}

def http = new HTTPBuilder(sf_login_domain)
    def postBody = [
        grant_type: 'password',
        client_id: consumer_key,
        client_secret: consumer_secret,
        username: auth_username,
        password: auth_password
    ]
    try {
        http.post( path : 'EfetuarLogin', body : postBody, requestContentType: URLENC) {
          resp, json ->
            log.debug "**  access_token: ${json.access_token}, instance_domain: ${json.instance_url}"
            access_token = json.access_token
            instance_domain = json.instance_url + "/"
        }
        coss.Parametro.executeUpdate("update Parametro p set p.valor='$access_token' where p.chave='ACCESS_TOKEN_SALES_FORCE'")
        coss.Parametro.executeUpdate("update Parametro p set p.valor='$instance_domain' where p.chave='INSTANCE_DOMAIN_SALES_FORCE'")
        retornoLogin = ['access_token':access_token, 'instance_domain':instance_domain]
    }
    catch(Exception e){
        log.error "** Error code: ${e}"
        log.error "** Post form: ${postBody}"
    }