| /* |
| * 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. |
| */ |
| |
| namespace Apache.Ignite.Core.Events |
| { |
| using System.Collections.Generic; |
| using System.Collections.ObjectModel; |
| using System.Globalization; |
| using Apache.Ignite.Core.Cluster; |
| using Apache.Ignite.Core.Impl; |
| using Apache.Ignite.Core.Impl.Binary; |
| |
| /// <summary> |
| /// Grid discovery event. |
| /// </summary> |
| public sealed class DiscoveryEvent : EventBase |
| { |
| /** */ |
| private readonly IClusterNode _eventNode; |
| |
| /** */ |
| private readonly long _topologyVersion; |
| |
| /** */ |
| private readonly ReadOnlyCollection<IClusterNode> _topologyNodes; |
| |
| /// <summary> |
| /// Constructor. |
| /// </summary> |
| /// <param name="r">The reader to read data from.</param> |
| internal DiscoveryEvent(BinaryReader r) : base(r) |
| { |
| _eventNode = ReadNode(r); |
| _topologyVersion = r.ReadLong(); |
| |
| var nodes = IgniteUtils.ReadNodes(r); |
| |
| _topologyNodes = nodes == null ? null : new ReadOnlyCollection<IClusterNode>(nodes); |
| } |
| |
| /// <summary> |
| /// Gets node that caused this event to be generated. It is potentially different from the node on which this |
| /// event was recorded. For example, node A locally recorded the event that a remote node B joined the topology. |
| /// In this case this property will return node B. |
| /// </summary> |
| public IClusterNode EventNode { get { return _eventNode; } } |
| |
| /// <summary> |
| /// Gets topology version if this event is raised on topology change and configured discovery |
| /// SPI implementation supports topology versioning. |
| /// </summary> |
| public long TopologyVersion { get { return _topologyVersion; } } |
| |
| /// <summary> |
| /// Gets topology nodes from topology snapshot. If SPI implementation does not support versioning, the best |
| /// effort snapshot will be captured. |
| /// </summary> |
| public ICollection<IClusterNode> TopologyNodes { get { return _topologyNodes; } } |
| |
| /// <summary> |
| /// Gets shortened version of ToString result. |
| /// </summary> |
| public override string ToShortString() |
| { |
| return string.Format(CultureInfo.InvariantCulture, |
| "{0}: EventNode={1}, TopologyVersion={2}, TopologyNodes={3}", Name, EventNode, |
| TopologyVersion, TopologyNodes.Count); |
| } |
| } |
| } |