| /* |
| * 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. |
| */ |
| |
| using System; |
| using System.Collections.Generic; |
| using System.Linq; |
| using System.Threading; |
| using Org.Apache.Rocketmq.Error; |
| using Proto = Apache.Rocketmq.V2; |
| |
| namespace Org.Apache.Rocketmq |
| { |
| public class TopicRouteData : IEquatable<TopicRouteData> |
| { |
| private int _index = 0; |
| |
| public TopicRouteData(IEnumerable<Proto.MessageQueue> messageQueues) |
| { |
| var messageQueuesList = messageQueues.Select(mq => new MessageQueue(mq)).ToList(); |
| |
| MessageQueues = messageQueuesList; |
| } |
| |
| public List<MessageQueue> MessageQueues { get; } |
| |
| public Endpoints PickEndpointsToQueryAssignments() |
| { |
| var nextIndex = Interlocked.Increment(ref _index) - 1; |
| foreach (var mq in MessageQueues) |
| { |
| var modIndex = Mod(nextIndex++, MessageQueues.Count); |
| var curMessageQueue = MessageQueues[modIndex]; |
| |
| if (Utilities.MasterBrokerId != curMessageQueue.Broker.Id) |
| { |
| continue; |
| } |
| if (Permission.None.Equals(curMessageQueue.Permission)) |
| { |
| continue; |
| } |
| return curMessageQueue.Broker.Endpoints; |
| } |
| throw new NotFoundException("Failed to pick endpoints to query assignment"); |
| } |
| |
| private int Mod(int x, int m) |
| { |
| if (m <= 0) |
| { |
| throw new ArgumentException("Modulus must be positive", nameof(m)); |
| } |
| var result = x % m; |
| return result >= 0 ? result : result + m; |
| } |
| |
| public bool Equals(TopicRouteData other) |
| { |
| if (ReferenceEquals(null, other)) |
| { |
| return false; |
| } |
| |
| return ReferenceEquals(this, other) || Equals(MessageQueues, other.MessageQueues); |
| } |
| |
| public override bool Equals(object obj) |
| { |
| if (ReferenceEquals(null, obj)) |
| { |
| return false; |
| } |
| |
| if (ReferenceEquals(this, obj)) |
| { |
| return true; |
| } |
| |
| return obj.GetType() == GetType() && Equals((TopicRouteData)obj); |
| } |
| |
| public override int GetHashCode() |
| { |
| return (MessageQueues != null ? MessageQueues.GetHashCode() : 0); |
| } |
| |
| public override string ToString() |
| { |
| var mqs = MessageQueues.Select(mq => mq.ToString()).ToList(); |
| return $"[{string.Join(",", mqs)}]"; |
| } |
| } |
| } |