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66 lines
2.2 KiB
66 lines
2.2 KiB
#if MYSQL_6_9
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// Copyright © 2013, Oracle and/or its affiliates. All rights reserved.
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//
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// MySQL Connector/NET is licensed under the terms of the GPLv2
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// <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most
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// MySQL Connectors. There are special exceptions to the terms and
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// conditions of the GPLv2 as it is applied to this software, see the
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// FLOSS License Exception
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// <http://www.mysql.com/about/legal/licensing/foss-exception.html>.
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published
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// by the Free Software Foundation; version 2 of the License.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this program; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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using System;
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using System.Collections.Generic;
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using System.Text;
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namespace Externals.MySql.Data.MySqlClient.Replication
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{
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/// <summary>
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/// Class that implements Round Robing Load Balancing technique
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/// </summary>
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internal class ReplicationRoundRobinServerGroup : ReplicationServerGroup
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{
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private int nextServer;
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public ReplicationRoundRobinServerGroup(string name, int retryTime) : base(name, retryTime)
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{
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nextServer = -1;
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}
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/// <summary>
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/// Gets an available server based on Round Robin load balancing
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/// </summary>
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/// <param name="isMaster">True if the server to return must be a master</param>
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/// <returns>Next available server</returns>
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internal protected override ReplicationServer GetServer(bool isMaster)
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{
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for (int i = 0; i < Servers.Count; i++)
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{
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nextServer++;
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if (nextServer == Servers.Count)
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nextServer = 0;
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ReplicationServer s = Servers[nextServer];
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if (!s.IsAvailable) continue;
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if (isMaster && !s.IsMaster) continue;
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return s;
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}
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return null;
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}
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}
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}
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#endif
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