/// <summary>
/// Creates a session pool for the given client.
/// </summary>
/// <param name="client">The client to use for this session pool. Must not be null.</param>
/// <param name="options">The options for this session pool. Must not be null.</param>
/// <param name="logger">The logger to use. May be null, in which case the default logger is used.</param>
public SessionPool(SpannerClient client, SessionPoolOptions options, Logger logger)
{
_client = GaxPreconditions.CheckNotNull(client, nameof(client));
_clock = _client.Settings.Clock ?? SystemClock.Instance;
_scheduler = _client.Settings.Scheduler ?? SystemScheduler.Instance;
Options = GaxPreconditions.CheckNotNull(options, nameof(options));
_logger = logger ?? Logger.DefaultLogger;
_detachedSessionPool = new DetachedSessionPool(this);
_sessionAcquisitionSemaphore = new SemaphoreSlim(Options.MaximumConcurrentSessionCreates);
if (Options.MaintenanceLoopDelay != TimeSpan.Zero)
{
Task.Run(() => PoolMaintenanceLoop(this));
}
}
/// <summary>
/// Creates a session pool for the given client.
/// </summary>
/// <param name="client">The client to use for this session pool. Must not be null.</param>
/// <param name="options">The options for this session pool. Must not be null.</param>
public SessionPool(SpannerClient client, SessionPoolOptions options)
{
Client = GaxPreconditions.CheckNotNull(client, nameof(client));
_clock = client.Settings.Clock ?? SystemClock.Instance;
_scheduler = client.Settings.Scheduler ?? SystemScheduler.Instance;
Options = GaxPreconditions.CheckNotNull(options, nameof(options));
_logger = client.Settings.Logger; // Just to avoid fetching it all the time
_detachedSessionPool = new DetachedSessionPool(this);
_batchSessionCreateSemaphore = new SemaphoreSlim((int)Math.Ceiling(
Options.MaximumConcurrentSessionCreates / (double)Options.CreateSessionMaximumBatchSize));
if (Options.MaintenanceLoopDelay != TimeSpan.Zero)
{
Task.Run(() => PoolMaintenanceLoop(this));
}
}
internal SessionPoolImpl(SessionPoolKey key, SessionPoolOptions options)
{
_options = GaxPreconditions.CheckNotNull(options, nameof(options));
_sessionCreateThrottle = new SemaphoreSlim(_options.MaximumConcurrentSessionCreates, _options.MaximumConcurrentSessionCreates);
Key = key;
}