public async Task Pause(TimeSpan timeout)
{
await Stop();
Status = AgentStatus.Paused;
_tracker.Publish(new ShardState(_projectionShard, ShardAction.Paused));
#pragma warning disable 4014
// ReSharper disable once MethodSupportsCancellation
Task.Run(async () =>
#pragma warning restore 4014
{
// ReSharper disable once MethodSupportsCancellation
await Task.Delay(timeout);
_cancellationSource = new CancellationTokenSource();
_cancellation = _cancellationSource.Token;
var parameters = new ActionParameters(this, async () =>
{
try
{
await Start(_daemon);
}
catch (Exception e)
{
throw new ShardStartException(_projectionShard.Name, e);
}
});
parameters.LogAction = (l, e) =>
{
l.LogError(e, "Error trying to start shard '{ShardName}' after pausing",
_projectionShard.Name);
};
await _daemon.TryAction(parameters);
});
}
private async Task<EventRange> loadEvents(EventRange range)
{
var parameters = new ActionParameters(this, async () =>
{
await _fetcher.Load(_projectionShard.Name, range, _cancellation);
if (_logger.IsEnabled(LogLevel.Debug))
{
_logger.LogDebug("Loaded events for {Range}", range);
}
})
{
LogAction = (logger, e) =>
{
logger.LogError(e, "Error loading events for {Range}", range);
}
};
await _daemon.TryAction(parameters);
return range;
}
private async Task <EventRange> loadEvents(EventRange range)
{
var parameters = new ActionParameters(this, async() =>
{
await _fetcher.Load(range, _cancellation).ConfigureAwait(false);
if (_logger.IsEnabled(LogLevel.Debug))
{
_logger.LogDebug("Loaded events {Range} for {ProjectionShardIdentity}", range, ProjectionShardIdentity);
}
})
{
LogAction = (logger, e) =>
{
logger.LogError(e, "Error loading events {Range} for {ProjectionShardIdentity}", range, ProjectionShardIdentity);
}
};
await _daemon.TryAction(parameters).ConfigureAwait(false);
return(range);
}