// private static readonly string localConfig = "<RedisConfig><Node NodeName=\"default\" IsMasterSlave=\"false\"><Item pool = \"0\" IsMaster=\"false\" server=\"{0}\" port=\"{1}\" allowadmin=\"true\" connectTimeout=\"0\" ssl=\"false\" pwd=\"\" /></Node></RedisConfig>";
/// <summary>
/// 初始化服务器配置
/// </summary>
/// <returns>服务器配置列表</returns>
// public static Dictionary<string,RedisNode> InitlizeServerList(XElement root)
// {
// if (root != null && root.Element("RedisConfig") != null &&
// root.Element("RedisConfig").Elements("Node") != null)
// {
// IEnumerable nodes =
// from em in root.Element("RedisConfig").Elements("Node")
// select em;
// foreach (XElement it in nodes)
// {
// if (it.Elements("Item") == null)
// {
// continue;
// }
// RedisNode node = new RedisNode()
// {
// NodeName = it.Attribute("NodeName").Value.ToLower(),
// IsMasterSlave = it.Attribute("IsMasterSlave").Value == "true" ? true : false,
// };
// if (redisNodes.ContainsKey(node.NodeName))
// {
// Log.GrantLogTextWriter.Write(new Exception(string.Format("不能配置业务节点同名的redis服务器,{0}节点的配置将被忽略", node.NodeName)));
// continue;
// }
// redisNodes[node.NodeName] = node;
// IEnumerable srvs = from sr in it.Elements("Item")
// select sr;
// var servers = new List<RedisServer>();
// foreach (XElement s in srvs)
// {
// var srv = new RedisServer
// {
// Node = node,
// IsMaster = s.Attribute("IsMaster").Value == "true" ? true : false,
// Pool = int.Parse(s.Attribute("pool").Value),
// ConnectTimeout = int.Parse(s.Attribute("connectTimeout").Value),
// Server = s.Attribute("server").Value,
// Port = int.Parse(s.Attribute("port").Value),
// AllowAdmin = s.Attribute("allowadmin").Value == "true" ? true : false,
// Ssl = s.Attribute("ssl").Value == "true" ? true : false,
// Pwd = s.Attribute("pwd").Value,
// };
// if (node.IsMasterSlave && srv.IsMaster)
// {
// RedisConnectionManager.GetConnection(srv); // 提前预初始化
// node.MasterServer = srv; // 如果配置了多个主，这里只会把最后一个做为主
// }
// else
// {
// servers.Add(srv); // 如果是非主从模式，将所有的都加到从上，没有主次
// RedisConnectionManager.GetConnection(srv);
// }
// }
// node.SlaveServers = servers.ToArray();
// }
// return redisNodes;
// }
// throw new Exception("无法解析RedisConfig配置");
// // else
// // Log.LogEx.LogError("redis clinet config is null");
// }
public static Dictionary <string, RedisNode> InitlizeServerList(Config.RedisConfig config)
{
if (config != null && config.Nodes != null && config.Nodes.Count > 0)
{
foreach (Config.RedisNode it in config.Nodes)
{
RedisNode node = new RedisNode()
{
NodeName = it.NodeName.ToLower(),
IsMasterSlave = it.IsMasterSlave,
};
// 这里的初始化方法需要满足 重复调用. 所以注释掉这句, 覆盖原来的配置
//if (redisNodes.ContainsKey(node.NodeName))
//{
// Log.GrantLogTextWriter.Write(new Exception(string.Format("不能配置业务节点同名的redis服务器,{0}节点的配置将被忽略", node.NodeName)));
// continue;
//}
redisNodes[node.NodeName] = node;
var servers = new List <RedisServer>();
foreach (Config.RedisItem sItem in it.Items)
{
var srv = new RedisServer
{
Node = node,
IsMaster = sItem.IsMaster,
Pool = sItem.Pool,
ConnectTimeout = sItem.ConnectTimeout,
Server = sItem.Server,
Port = sItem.Port,
AllowAdmin = sItem.AllowAdmin,
Ssl = sItem.Ssl,
Ssl2 = sItem.Ssl2,
Pwd = sItem.Pwd,
DbIndex = sItem.DbIndex,
};
if (node.IsMasterSlave && srv.IsMaster)
{
RedisConnectionManager.GetConnection(srv); // 提前预初始化
node.MasterServer = srv; // 如果配置了多个主，这里只会把最后一个做为主
}
else
{
servers.Add(srv); // 如果是非主从模式，将所有的都加到从上，没有主次
RedisConnectionManager.GetConnection(srv);
}
}
node.SlaveServers = servers.ToArray();
}
return(redisNodes);
}
throw new Exception("无法解析RedisConfig配置");
}
private T GetSlave <T>(Func <IDatabase, T> fn)
{
int error = 0;
gotoHere:
ConnectionMultiplexer conn = null;
int idx = DateTime.Now.Millisecond % SlaveServers.Length; // 如果读从库，随机取
try
{
conn = RedisConnectionManager.GetConnection(SlaveServers[idx]);
if (conn == null)
{
return(default(T));
}
IDatabase db = conn.GetDatabase(this.SlaveServers[idx].DbIndex);
try
{
return(fn(db)); // 回调异常和连接异常分开处理，回调异常是业务处理异常，连接异常底层做重试
}
catch (Exception e)
{
logger.LogError(e, $"RedisNode.GetSlave<T>类型{typeof(T).FullName}转换异常");
return(default(T));
}
}
catch (Exception ex)
{
if (error < 2)
{
if (conn != null)
{
// 释放掉坏连接
RedisConnectionManager.Dispose(SlaveServers[idx], conn);
}
error += 1;
System.Threading.Thread.Sleep(1000);
goto gotoHere;
}
logger.LogError(ex, "RedisNode.GetSlave<T>.Error");
return(default(T));
}
}
/// <summary>
/// 操作从库，一般是不分主从的set,不能乱了
/// </summary>
/// <param name="fn">fn</param>
/// <returns>bool</returns>
private bool setSlave(Func <IDatabase, bool> fn)
{
int error = 0;
gotHere:
if (this.SlaveServers == null || this.SlaveServers.Length < 1)
{
return(false);
}
int num = 0;
ConnectionMultiplexer conn = null;
for (int i = 0; i < this.SlaveServers.Length; i++)
{
try
{
conn = RedisConnectionManager.GetConnection(this.SlaveServers[i]);
if (conn == null)
{
continue;
}
IDatabase db = conn.GetDatabase(this.SlaveServers[i].DbIndex);
num += fn(db) ? 1 : 0;
}
catch (Exception ex)
{
if (error < 2)
{
if (conn != null)
{
RedisConnectionManager.Dispose(this.SlaveServers[i], conn); // conn = null;
}
error += 1;
System.Threading.Thread.Sleep(1000);
goto gotHere;
}
logger.LogError(ex, "RedisNode.SetSlave.Error");
}
}
return(num == this.SlaveServers.Length);
}
/// <summary>
/// 操作主库，一般都是set操作
/// </summary>
/// <param name="fn">fn</param>
/// <returns>bool</returns>
private bool setMaster(Func <IDatabase, bool> fn)
{
int error = 0;
gotoHere:
ConnectionMultiplexer conn = null;
try
{
conn = RedisConnectionManager.GetConnection(this.MasterServer);
if (conn == null)
{
return(false);
}
IDatabase db = conn.GetDatabase(this.MasterServer.DbIndex);
return(fn(db));
}
catch (Exception ex)
{
if (error < 2)//出错可以重试两次
{
if (conn != null)
{
RedisConnectionManager.Dispose(this.MasterServer, conn); // conn = null;//把这个链接设置为空，防止第二次还是被取出来
}
error += 1;
System.Threading.Thread.Sleep(1000);
goto gotoHere;
}
logger.LogError(ex, "RedisNode.setMaster.Error");
return(false);
}
}