public Fetcher(IDocumentStore store, DaemonSettings settings, AsyncOptions options, IDaemonLogger logger, IDaemonErrorHandler errorHandler, IEnumerable <Type> eventTypes)
{
_settings = settings;
_options = options;
_logger = logger;
_errorHandler = errorHandler;
State = FetcherState.Waiting;
// TODO -- this will have to change
_tenant = store.Tenancy.Default;
_streamIdentity = store.Events.StreamIdentity;
_selector = _tenant.EventStorage();
EventTypeNames = eventTypes.Select(x => store.Events.EventMappingFor(x).Alias).ToArray();
var fields = _selector.SelectFields().Join(", ");
_sql =
$@"
select seq_id from {_selector.Events.DatabaseSchemaName}.mt_events where seq_id > :last and seq_id <= :limit and extract(epoch from age(transaction_timestamp(), {_selector.Events.DatabaseSchemaName}.mt_events.timestamp)) >= :buffer order by seq_id;
select {fields} from {_selector.Events.DatabaseSchemaName}.mt_events where seq_id > :last and seq_id <= :limit and type = ANY(:types) and extract(epoch from age(transaction_timestamp(), {_selector.Events.DatabaseSchemaName}.mt_events.timestamp)) >= :buffer order by seq_id;
select min(seq_id) from {_selector.Events.DatabaseSchemaName}.mt_events where seq_id > :limit and type = ANY(:types) and extract(epoch from age(transaction_timestamp(), {_selector.Events.DatabaseSchemaName}.mt_events.timestamp)) >= :buffer;
select max(seq_id) from {_selector.Events.DatabaseSchemaName}.mt_events where seq_id >= :limit and extract(epoch from age(transaction_timestamp(), {_selector.Events.DatabaseSchemaName}.mt_events.timestamp)) >= :buffer
".Replace(" as d", "");
}
public StreamState FetchStreamState(Guid streamId)
{
var handler = _tenant.EventStorage().QueryForStream(StreamAction.ForReference(streamId, _tenant));
return(_session.ExecuteHandler(handler));
}