public static async Task<INode> ConnectAsync(string host, int port, ConnectionPoolConfiguration poolConfiguration, ConnectionConfiguration connectionConfiguration)
{
var masterPool = await ConnectionPool.ConnectAsync(host, port, poolConfiguration, connectionConfiguration);
var infoCommand = Command.From("INFO");
var response = await masterPool.SendAsync(infoCommand);
if (response.IsError)
throw ExceptionBecause.Node.GotErrorResponseFromNodeInfo(host, port);
if (response.Value.IsArray)
throw ExceptionBecause.MalformedData.InNodeInfo(host, port, response);
var slavePoolTasks = response.Value.ToString()
.Split(new [] { "\r\n" }, StringSplitOptions.RemoveEmptyEntries)
.Where(s => s.StartsWith("slave"))
.Select(slaveInfo =>
{
var components = slaveInfo.Split(',');
if (components.Length != 5)
throw ExceptionBecause.MalformedData.InMasterSlaveInfo(host, port, slaveInfo);
var nodeHost = components[2];
var nodePort = int.Parse(components[3]);
return ConnectionPool.ConnectAsync(nodeHost, nodePort, poolConfiguration, connectionConfiguration);
});
var slavePools = await Task.WhenAll(slavePoolTasks);
return new Node(host, port, masterPool, slavePools);
}
private ConnectionPool(ConnectionPoolConfiguration poolConfiguration, IEnumerable<IConnection> connections)
{
_poolConfiguration = poolConfiguration;
foreach (var connection in connections)
_connections.Enqueue(connection);
_semaphore = new SemaphoreSlim(_connections.Count);
}
public static async Task<IConnectionPool> ConnectAsync(string host, int port, ConnectionPoolConfiguration poolConfiguration, ConnectionConfiguration connectionConfiguration)
{
var tasks = new List<Task<IConnection>>();
for (var i = 0; i < poolConfiguration.ConnectionsPerPool; i++)
tasks.Add(Connection.ConnectAsync(host, port, connectionConfiguration));
var connections = await Task.WhenAll(tasks);
return new ConnectionPool(poolConfiguration, connections);
}
