internal IPooledConnection AcquireReadConnection()
{
while (true)
{
Uri uri;
if (!_clusterView.TryNextReader(out uri))
{
// no server known to clusterView
break;
}
try
{
IPooledConnection conn;
if (_clusterConnectionPool.TryAcquire(uri, out conn))
{
return(conn);
}
}
catch (SessionExpiredException)
{
// ignored
// Already handled by connectionpool error handler to remove from load balancer
}
}
throw new SessionExpiredException("Failed to connect to any read server.");
}
private ClusterConnection CreateClusterConnection(Uri uri, AccessMode mode = AccessMode.Write)
{
lock (_syncLock)
{
try
{
IPooledConnection conn;
if (_clusterConnectionPool.TryAcquire(uri, out conn))
{
return(new ClusterConnection(conn, uri, mode, this));
}
OnConnectionError(uri, new ArgumentException(
$"Routing table {_routingTable} contains a server {uri} " +
$"that is not known to cluster connection pool {_clusterConnectionPool}."));
}
catch (ServiceUnavailableException e)
{
OnConnectionError(uri, e);
}
return(null);
}
}
