public void AddServer( )
{
var configuration = ConfigurationSettings.GetRedisConfigurationSection( );
Assert.AreEqual(1, configuration.Servers.Count);
configuration.Servers.Add(new RedisServer("abc", 123));
ConfigurationSettings.UpdateRedisConfigurationSection(configuration);
Assert.AreEqual(2, configuration.Servers.Count);
RedisServer server = configuration.Servers[0];
Assert.IsNotNull(server);
Assert.AreEqual("localhost", server.HostName);
Assert.AreEqual(6379, server.Port);
server = configuration.Servers[1];
Assert.IsNotNull(server);
Assert.AreEqual("abc", server.HostName);
Assert.AreEqual(123, server.Port);
configuration.Servers.Remove("abc");
ConfigurationSettings.UpdateRedisConfigurationSection(configuration);
Assert.AreEqual(1, configuration.Servers.Count);
}
public void GetServers( )
{
var configuration = ConfigurationSettings.GetRedisConfigurationSection( );
Assert.AreEqual(1, configuration.Servers.Count);
RedisServer server = configuration.Servers[0];
Assert.IsNotNull(server);
Assert.AreEqual("localhost", server.HostName);
Assert.AreEqual(6379, server.Port);
}
public void RemoveServer( )
{
var configuration = ConfigurationSettings.GetRedisConfigurationSection( );
Assert.AreEqual(1, configuration.Servers.Count);
RedisServer server = configuration.Servers[0];
configuration.Servers.RemoveAt(0);
ConfigurationSettings.UpdateRedisConfigurationSection(configuration);
Assert.AreEqual(0, configuration.Servers.Count);
configuration.Servers.Add(server);
ConfigurationSettings.UpdateRedisConfigurationSection(configuration);
Assert.AreEqual(1, configuration.Servers.Count);
}
/// <summary>
/// Connects to a redis server.
/// </summary>
public void Connect(bool allowAdmin = false)
{
lock ( _syncRoot )
{
if (IsConnected)
{
return;
}
RedisConfiguration configuration = ConfigurationSettings.GetRedisConfigurationSection( );
if (configuration == null)
{
throw new RedisConnectionException("Invalid Redis configuration.");
}
if (configuration.Servers == null || configuration.Servers.Count <= 0)
{
throw new RedisConnectionException("No Redis servers found.");
}
/////
// Randomly pick a redis server from the pool.
// (Load balance this at a later stage).
/////
var random = new Random(Environment.TickCount);
int serverId = random.Next(0, configuration.Servers.Count - 1);
RedisServer redisServer = configuration.Servers[serverId];
if (redisServer == null || string.IsNullOrEmpty(redisServer.HostName))
{
throw new RedisConnectionException("Invalid Redis server configuration.");
}
string host = string.Format("{0}:{1}", redisServer.HostName, redisServer.Port);
ConfigurationOptions configurationOptions = ConfigurationOptions.Parse(host);
configurationOptions.ClientName = GetClientName( );
configurationOptions.AbortOnConnectFail = false;
configurationOptions.AllowAdmin = allowAdmin;
EventLog.Application.WriteInformation("Connecting to Redis server ('{0}')...", host);
try
{
ConnectionMultiplexer multiplexer = ConnectionMultiplexer.Connect(configurationOptions);
/////
// Allow concurrent message processing.
/////
multiplexer.PreserveAsyncOrder = false;
multiplexer.ConnectionFailed += ConnectionFailed;
multiplexer.ConnectionRestored += ConnectionRestored;
EventLog.Application.WriteInformation(multiplexer.IsConnected ? "Connection to Redis server ('{0}') established." : "Connection to Redis server ('{0}') failed. Connection will be automatically reestablished when possible.", host);
IServer server = multiplexer.GetServer(host);
if (server != null)
{
PrepareScripts(server);
}
ActiveConnection = multiplexer;
}
catch (StackExchange.Redis.RedisConnectionException exc)
{
EventLog.Application.WriteWarning("Connection to Redis server '{0}' failed.\n{1}", host, exc);
}
}
}
