private async Task <ReadStreamPage> FilterExpired(
ReadStreamPage page,
ReadNextStreamPage readNext,
CancellationToken cancellationToken)
{
if (page.StreamId.StartsWith("$"))
{
return(page);
}
int?maxAge = _metadataMaxAgeCache == null
? null
: await _metadataMaxAgeCache.GetMaxAge(page.StreamId, cancellationToken);
if (!maxAge.HasValue)
{
return(page);
}
var currentUtc = GetUtcNow();
var valid = new List <StreamMessage>();
foreach (var message in page.Messages)
{
if (message.CreatedUtc.AddSeconds(maxAge.Value) > currentUtc)
{
valid.Add(message);
}
else
{
PurgeExpiredMessage(message);
}
}
return(new ReadStreamPage(
page.StreamId,
page.Status,
page.FromStreamVersion,
page.NextStreamVersion,
page.LastStreamVersion,
page.LastStreamPosition,
page.ReadDirection,
page.IsEnd,
readNext,
valid.ToArray()));
}
public async Task When_lookup_for_uncached_stream_with_then_should_not_hit_cache()
{
string streamId = "stream";
await _store.SetStreamMetadata(streamId, ExpectedVersion.Any, 60);
var maxAge = await _cache.GetMaxAge(streamId);
maxAge.Value.ShouldBe(60);
_cache.Count.ShouldBe(1);
_cache.CacheHitCount.ShouldBe(0);
}