private async Task UpdateCacheValueAsync(FlagCacheEntry cacheEntry)
{
try {
_logger.LogDebug("Updating cache for flag {0}.", cacheEntry.Key);
var result = await _cloudTable.ExecuteAsync(
TableOperation.Retrieve <DynamicTableEntity>("default", cacheEntry.Key)
);
var value = ((DynamicTableEntity)result.Result).Properties["Value"];
cacheEntry.CompleteUpdate(value);
}
catch (Exception ex) {
_logger.LogError(ex, "Failed to update cache value for flag {0}.", cacheEntry.Key);
cacheEntry.FailUpdateAndRetryAt(DateTime.Now.AddMinutes(5));
}
}
private EntityProperty?TryUpdateAndGetValue(FlagCacheEntry cacheEntry)
{
if (cacheEntry.NextUpdateRetryTime > DateTime.Now)
{
return(cacheEntry.Value);
}
var newUpdate = new Update();
var update = cacheEntry.GetOrStartUpdate(newUpdate);
if (update == newUpdate)
{
update.Task = UpdateCacheValueAsync(cacheEntry);
}
update.Task?.Wait(100);
return(cacheEntry.Value);
}
