public MediumStore(ILoggerFactory loggerFactory, ProxyOptions proxyOptions)
{
_loggerFactory = loggerFactory;
if (_loggerFactory == null)
{
throw new ArgumentNullException(nameof(loggerFactory));
}
_logger = loggerFactory.CreateLogger <MediumStore>();
_proxyOptions = proxyOptions ?? new ProxyOptions();
}
public MediumCache(ILoggerFactory loggerFactory, ProxyOptions proxyOptions)
{
_logger = loggerFactory.CreateLogger <MediumCache>();
_proxyOptions = proxyOptions ?? new ProxyOptions();
_contents = new List <Item>();
RefreshCachePredicate = currentDateTime =>
{
var targetDt = ModifiedDateTimeUtc.Add(_proxyOptions.CachePolicy.CacheLifecycleTimeSpan);
_logger.LogInformation($"calling delegate RefreshCachePredicate(),{targetDt},{currentDateTime}");
return(targetDt < currentDateTime);
};
RefreshCacheSpeculativeExecutionPredicate = currentDateTime =>
{
var targetDt = ModifiedDateTimeUtc.Add(
new TimeSpan((long)(
_proxyOptions.CachePolicy.CacheLifecycleTimeSpan.Ticks
* _proxyOptions.CachePolicy.CacheLifecycleSpeculativeExecutionRate)));
_logger.LogInformation($"calling delegate RefreshCacheSpeculativeExecutionPredicate(),{targetDt},{currentDateTime}");
return(targetDt < currentDateTime);
};
ModifiedDateTimeUtc = DateTime.MinValue;
// monitoring thread.
Task.Factory.StartNew(async() =>
{
while (_executeMonitoringThread)
{
await Task.Delay(_proxyOptions.CachePolicy.MonitoringThreadInterval);
_logger.LogInformation($"calling ()monitoring. _executeMonitoringThread={ _executeMonitoringThread},interval={_proxyOptions.CachePolicy.MonitoringThreadInterval}");
if (RefreshCacheSpeculativeExecutionPredicate(DateTime.UtcNow))
{
await RefreshCacheAsync(true);
}
}
}).ConfigureAwait(false);
}
