253 lines
8.6 KiB
C#
253 lines
8.6 KiB
C#
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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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using System.Threading;
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using System.Web;
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using CYQ.Data.Tool;
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namespace CYQ.Data
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{
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/// <summary>
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/// һ<><D2BB><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><CAB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӱ<EFBFBD><D3B1><EFBFBD><EFBFBD><EFBFBD>
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/// </summary>
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internal partial class ConnObject
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{
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public ConnBean Master;
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public ConnBean BackUp;
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public MList<ConnBean> Slave = new MList<ConnBean>();
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/// <summary>
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/// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD>á<EFBFBD>
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/// </summary>
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internal void InterChange()
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{
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if (BackUp != null)
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{
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ConnBean middle = Master;
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Master = BackUp;
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BackUp = middle;
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}
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}
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static int index = -1;
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static readonly object o = new object();
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public ConnBean GetSlave()
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{
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if (Slave.Count > 0)
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{
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lock (o)
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{
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if (index == -1)
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{
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index = new Random().Next(Slave.Count);
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}
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if (index >= Slave.Count)//2
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{
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index = 0;
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}
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ConnBean slaveBean = Slave[index];
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index++;
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if (slaveBean.IsOK)//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ء<F2B7B5BB>
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{
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return slaveBean;
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}
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else if (Slave.Count > 1)
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{
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//int i = index + 1;//<2F><><EFBFBD><EFBFBD>һ<EFBFBD>¸<EFBFBD><C2B8><EFBFBD><EFBFBD><EFBFBD>
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for (int i = index + 1; i < Slave.Count + 1; i++)
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{
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if (i == Slave.Count)
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{
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i = 0;
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}
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if (i == index) { break; }
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if (Slave[i].IsOK)
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{
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return Slave[i];
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}
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}
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}
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//<2F><>ȫ<EFBFBD><C8AB><EFBFBD><EFBFBD><EFBFBD>ˣ<EFBFBD><CBA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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if (Master != null && Master.IsOK)
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{
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return Master;
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}
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else if (BackUp != null && BackUp.IsOK)
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{
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return BackUp;
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}
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}
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}
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return null;
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}
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/// <summary>
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/// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>⣨Ĭ<E2A3A8><C4AC>10<31>룩
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/// </summary>
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public void SetFocusOnMaster()
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{
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if (Slave.Count > 0)
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{
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string id = StaticTool.GetMasterSlaveKey();//<2F><>ȡ<EFBFBD><C8A1>ǰ<EFBFBD>ı<EFBFBD>ʶ
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Cache.DistributedCache.Local.Set(id, 1, AppConfig.DB.MasterSlaveTime / 60.0);
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}
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}
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public bool IsAllowSlave()
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{
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if (Slave.Count == 0) { return false; }
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string id = StaticTool.GetMasterSlaveKey();//<2F><>ȡ<EFBFBD><C8A1>ǰ<EFBFBD>ı<EFBFBD>ʶ
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return !Cache.DistributedCache.Local.Contains(id);
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}
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}
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internal partial class ConnObject
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{
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/// <summary>
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/// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӵĶ<D3B5><C4B6><EFBFBD>
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/// </summary>
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private static MDictionary<string, ConnObject> connDicCache = new MDictionary<string, ConnObject>(StringComparer.OrdinalIgnoreCase);
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internal static ConnObject Create(string connNameOrString)
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{
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connNameOrString = string.IsNullOrEmpty(connNameOrString) ? AppConfig.DB.DefaultConn : connNameOrString;
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if (connNameOrString.EndsWith("_Bak"))
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{
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connNameOrString = connNameOrString.Replace("_Bak", "");
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}
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if (connDicCache.ContainsKey(connNameOrString))
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{
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return connDicCache[connNameOrString];
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}
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ConnBean cbMaster = ConnBean.Create(connNameOrString);
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if (cbMaster == null)
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{
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#region <EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD>ȡĬ<EFBFBD><EFBFBD>Conn<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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string errMsg = string.Format("Can't find the connection key '{0}' from connectionStrings config section !", connNameOrString);
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if (connNameOrString == AppConfig.DB.DefaultConn)
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{
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Error.Throw(errMsg);
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}
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else
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{
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ConnBean cb = ConnBean.Create(AppConfig.DB.DefaultConn); // <20><><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><D0B5><EFBFBD>Ĭ<EFBFBD><C4AC><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD><D3A3><EFBFBD><EFBFBD><EFBFBD>ConnName<6D><65><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĭ<EFBFBD><C4AC>
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if (cb != null)
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{
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cbMaster = cb.Clone();//<2F><>ȡĬ<C8A1>ϵ<EFBFBD>ֵ<EFBFBD><D6B5>
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}
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else
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{
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Error.Throw(errMsg);
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}
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}
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#endregion
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}
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ConnObject co = new ConnObject();
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co.Master = cbMaster;
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#region <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӱ<EFBFBD><EFBFBD>ڵ<EFBFBD>
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if (connNameOrString != null && connNameOrString.Length < 32 && !connNameOrString.Trim().Contains(" ")) // ΪconfigKey
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{
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ConnBean coBak = ConnBean.Create(connNameOrString + "_Bak");
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if (coBak != null && coBak.ConnDataBaseType == cbMaster.ConnDataBaseType)
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{
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co.BackUp = coBak;
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co.BackUp.IsBackup = true;
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}
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for (int i = 1; i < 10000; i++)
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{
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ConnBean cbSlave = ConnBean.Create(connNameOrString + "_Slave" + i);
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if (cbSlave == null)
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{
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break;
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}
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cbSlave.IsSlave = true;
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co.Slave.Add(cbSlave);
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}
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}
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#endregion
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if (!connDicCache.ContainsKey(connNameOrString) && co.Master.ConnName == connNameOrString) // <20><>һ<EFBFBD>µģ<C2B5><C4A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>л<EFBFBD><D0BB><EFBFBD><EFBFBD>ٻ<EFBFBD><D9BB><EFBFBD>
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{
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connDicCache.Set(connNameOrString, co);
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}
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return co;
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}
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public void SaveToCache(string key)
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{
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if (!connDicCache.ContainsKey(key))
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{
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connDicCache.Add(key, this);
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}
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}
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public static void Clear()
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{
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connDicCache.Clear();
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}
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public static void Remove(string key)
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{
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connDicCache.Remove(key);
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}
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}
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/// <summary>
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/// <20>߳<EFBFBD><DFB3><EFBFBD><EFBFBD><EFBFBD>
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/// </summary>
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internal partial class ConnObject
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{
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static ConnObject()
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{
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ThreadBreak.AddGlobalThread(new ParameterizedThreadStart(CheckConnIsOk));//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӵļ<D3B5><C4BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ơ<EFBFBD>
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}
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/// <summary>
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/// <20><>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD>쳣<EFBFBD><ECB3A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7>ָ<EFBFBD><D6B8><EFBFBD>
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/// </summary>
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/// <param name="threadID"></param>
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public static void CheckConnIsOk(object threadID)
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{
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System.Diagnostics.Debug.WriteLine("ConnObject.CheckConnIsOk on Thread :" + threadID);
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while (true)
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{
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Thread.Sleep(1000);
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if (connDicCache.Count > 0)
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{
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try
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{
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string[] items = new string[connDicCache.Count];
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connDicCache.Keys.CopyTo(items, 0);
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foreach (string key in items)
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{
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ConnObject obj = connDicCache[key];
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if (obj != null)
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{
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if (!obj.Master.IsOK)
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{
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if (obj.Master.ConnName == obj.Master.ConnString)
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{
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connDicCache.Remove(key);//<2F>Ƴ<EFBFBD><C6B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӡ<EFBFBD>
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continue;
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}
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obj.Master.TryTestConn();
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}
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if (obj.BackUp != null && !obj.BackUp.IsOK) { obj.BackUp.TryTestConn(); }
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if (obj.Slave != null && obj.Slave.Count > 0)
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{
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for (int i = 0; i < obj.Slave.Count; i++)
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{
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if (!obj.Slave[i].IsOK)
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{
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obj.Slave[i].TryTestConn();
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}
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}
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}
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}
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}
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items = null;
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}
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catch
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{
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}
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}
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}
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}
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}
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}
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