public ClientHolder(ZooKeeperClientSettings settings, ILog log)
{
this.log = log;
this.settings = settings;
state = ClientHolderState.CreateActive(null, null, ConnectionState.Disconnected, null, settings);
suspendedManager = new SuspendedManager(settings.Timeout, settings.Timeout.Multiply(settings.MaximumConnectPeriodMultiplier), -3);
ZooKeeperLogInjector.Register(this, this.log);
}
private bool ResetClient([NotNull] ClientHolderState currentState)
{
log.Info("Resetting client. Current state: '{CurrentState}'.", currentState);
var newConnectionString = settings.ConnectionStringProvider();
if (string.IsNullOrEmpty(newConnectionString))
{
log.Error("Failed to resolve any ZooKeeper replicas.");
return(false);
}
var newConnectionWatcher = new ConnectionWatcher(ProcessEvent);
var newClient = new Lazy <ZooKeeperNetExClient>(
() =>
{
using (ExecutionContext.SuppressFlow())
{
return(new ZooKeeperNetExClient(
newConnectionString,
settings.ToInnerConnectionTimeout(),
newConnectionWatcher,
settings.CanBeReadOnly));
}
},
LazyThreadSafetyMode.ExecutionAndPublication);
var suspendedFor = suspendedManager.GetNextDelay();
var newState = suspendedFor != null && !currentState.IsSuspended
? ClientHolderState.CreateSuspended(suspendedFor)
: ClientHolderState.CreateActive(newClient, newConnectionWatcher, ConnectionState.Disconnected, newConnectionString, settings);
if (ChangeState(currentState, newState))
{
newState.Client?.Touch();
// Note(kungurtsev): increase delay for each active (not suspended) client creation.
if (!currentState.IsSuspended)
{
suspendedManager.IncreaseDelay();
}
currentState.Dispose();
}
return(true);
}
