Servicenow: oAuth Password grant authentication

gistfile1.txt

(function execute(inputs, outputs) {
  var provider = new sn_cc.StandardCredentialsProvider();
  var credential = provider.getCredentialByID("credential_id");
  var user = credential.getAttribute("user_name");
  var pass = credential.getAttribute("password");
 
  var oAuthClient = new sn_auth.GlideOAuthClient();
  var params ={grant_type:"password", username:user, password:pass};
  var json = new global.JSON();
  var extraParams = json.encode(params);
  var tokenResponse = oAuthClient.requestToken('oAuth_Profile_Name', extraParams);
  var token = tokenResponse.getToken();  
  outputs.accesstoken =  token.getAccessToken(); 
})(inputs, outputs);