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/*
* Copyright (c) 2023 Vaughn Nugent
*
* Library: VNLib
* Package: ObjectCacheServer
* File: IPeerMonitor.cs
*
* IPeerMonitor.cs is part of ObjectCacheServer which is part of the larger
* VNLib collection of libraries and utilities.
*
* ObjectCacheServer is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* ObjectCacheServer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see https://www.gnu.org/licenses/.
*/
using System.Collections.Generic;
namespace VNLib.Data.Caching.ObjectCache.Server.Clustering
{
/// <summary>
/// Represents a monitor for peer cache servers to advertise their presence
/// in the cluster
/// </summary>
internal interface IPeerMonitor
{
/// <summary>
/// Notifies the monitor that a remote peer has connected to the current node for
/// replication
/// </summary>
/// <param name="peer">The peer that connected</param>
void OnPeerConnected(ICachePeer peer);
/// <summary>
/// Notifies the monitor that a peer has disconnected
/// </summary>
/// <param name="peer">The peer that has disconnected</param>
void OnPeerDisconnected(ICachePeer peer);
/// <summary>
/// Gets an enumerable of all peers currently connected to this node
/// </summary>
/// <returns>The collection of all connected peers</returns>
IEnumerable<ICachePeer> GetAllPeers();
}
}
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