/// <summary>
/// Subscribes to all events from a checkpoint. This is exclusive of.
/// </summary>
/// <param name="start">A <see cref="Position"/> (exclusive of) to start the subscription from.</param>
/// <param name="eventAppeared">A Task invoked and awaited when a new event is received over the subscription.</param>
/// <param name="configureOperationOptions">An <see cref="Action{EventStoreClientOperationOptions}"/> to configure the operation's options.</param>
/// <param name="resolveLinkTos">Whether to resolve LinkTo events automatically.</param>
/// <param name="subscriptionDropped">An action invoked if the subscription is dropped.</param>
/// <param name="filterOptions">The optional <see cref="SubscriptionFilterOptions"/> to apply.</param>
/// <param name="userCredentials">The optional user credentials to perform operation with.</param>
/// <param name="cancellationToken">The optional <see cref="System.Threading.CancellationToken"/>.</param>
/// <returns></returns>
public Task <StreamSubscription> SubscribeToAllAsync(Position start,
Func <StreamSubscription, ResolvedEvent, CancellationToken, Task> eventAppeared,
bool resolveLinkTos = false,
Action <StreamSubscription, SubscriptionDroppedReason, Exception> subscriptionDropped = default,
SubscriptionFilterOptions filterOptions = null,
Action <EventStoreClientOperationOptions> configureOperationOptions = default,
UserCredentials userCredentials = default,
CancellationToken cancellationToken = default)
{
var operationOptions = _settings.OperationOptions.Clone();
configureOperationOptions?.Invoke(operationOptions);
return(SubscribeToAllAsync(start, eventAppeared, operationOptions, resolveLinkTos, subscriptionDropped,
filterOptions, userCredentials, cancellationToken));
}
private Task <StreamSubscription> SubscribeToAllAsync(Position start,
Func <StreamSubscription, ResolvedEvent, CancellationToken, Task> eventAppeared,
EventStoreClientOperationOptions operationOptions,
bool resolveLinkTos = false,
Action <StreamSubscription, SubscriptionDroppedReason, Exception> subscriptionDropped = default,
SubscriptionFilterOptions filterOptions = null,
UserCredentials userCredentials = default,
CancellationToken cancellationToken = default)
{
operationOptions.TimeoutAfter = DeadLine.None;
return(StreamSubscription.Confirm(ReadInternal(new ReadReq {
Options = new ReadReq.Types.Options {
ReadDirection = ReadReq.Types.Options.Types.ReadDirection.Forwards,
ResolveLinks = resolveLinkTos,
All = ReadReq.Types.Options.Types.AllOptions.FromPosition(start),
Subscription = new ReadReq.Types.Options.Types.SubscriptionOptions(),
Filter = GetFilterOptions(filterOptions)
}
}, operationOptions, userCredentials, cancellationToken), eventAppeared, subscriptionDropped, _log,
filterOptions?.CheckpointReached, cancellationToken));
}
private static ReadReq.Types.Options.Types.FilterOptions GetFilterOptions(
SubscriptionFilterOptions filterOptions) =>
filterOptions == null
? null
: GetFilterOptions(filterOptions.Filter, filterOptions.CheckpointInterval);