/// <remarks>Throws <see cref="ProtocolException"/> if the discovery result is invalid.</remarks>
/// <remarks>Throws <see cref="ServiceUnavailableException"/> if the no discovery procedure could be found in the server.</remarks>
public async Task <IRoutingTable> DiscoverAsync(IConnection connection, string database, Bookmark bookmark)
{
RoutingTable table;
var provider = new SingleConnectionBasedConnectionProvider(connection);
var multiDb = connection.SupportsMultidatabase();
var sessionAccessMode = multiDb ? AccessMode.Read : AccessMode.Write;
var sessionDb = multiDb ? "system" : null;
var session = new AsyncSession(provider, _logger, null, sessionAccessMode, sessionDb, bookmark);
try
{
var stmt = DiscoveryProcedure(connection, database);
var result = await session.RunAsync(stmt).ConfigureAwait(false);
var record = await result.SingleAsync().ConfigureAwait(false);
table = ParseDiscoveryResult(database, record);
}
finally
{
try
{
await session.CloseAsync().ConfigureAwait(false);
}
catch (Exception)
{
// ignore any exception
}
await provider.CloseAsync().ConfigureAwait(false);
}
return(table);
}
/// <remarks>Throws <see cref="ProtocolException"/> if the discovery result is invalid.</remarks>
/// <remarks>Throws <see cref="ServiceUnavailableException"/> if the no discovery procedure could be found in the server.</remarks>
public async Task <IRoutingTable> DiscoverAsync(IConnection connection)
{
var table = default(RoutingTable);
var provider = new SingleConnectionBasedConnectionProvider(connection);
var session = new AsyncSession(provider, _logger);
try
{
var result = await session.RunAsync(DiscoveryProcedure(connection)).ConfigureAwait(false);
var record = await result.SingleAsync().ConfigureAwait(false);
table = ParseDiscoveryResult(record);
}
finally
{
try
{
await session.CloseAsync().ConfigureAwait(false);
}
catch (Exception)
{
// ignore any exception
}
await provider.CloseAsync().ConfigureAwait(false);
}
return(table);
}