| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.onlab.onos.openflow.controller.driver; |
| |
| /** |
| * When we remove a pending role request we use this enum to indicate how we |
| * arrived at the decision. When we send a role request to the switch, we |
| * also use this enum to indicate what we expect back from the switch, so the |
| * role changer can match the reply to our expectation. |
| */ |
| public enum RoleRecvStatus { |
| /** The switch returned an error indicating that roles are not. |
| * supported*/ |
| UNSUPPORTED, |
| /** The request timed out. */ |
| NO_REPLY, |
| /** The reply was old, there is a newer request pending. */ |
| OLD_REPLY, |
| /** |
| * The reply's role matched the role that this controller set in the |
| * request message - invoked either initially at startup or to reassert |
| * current role. |
| */ |
| MATCHED_CURRENT_ROLE, |
| /** |
| * The reply's role matched the role that this controller set in the |
| * request message - this is the result of a callback from the |
| * global registry, followed by a role request sent to the switch. |
| */ |
| MATCHED_SET_ROLE, |
| /** |
| * The reply's role was a response to the query made by this controller. |
| */ |
| REPLY_QUERY, |
| /** We received a role reply message from the switch |
| * but the expectation was unclear, or there was no expectation. |
| */ |
| OTHER_EXPECTATION, |
| } |