public void RegisterNetwork(Lpp.Dns.DataMart.Lib.NetWorkSetting network)
{
Parallel.ForEach(network.DataMartList, dm =>
{
var cacheDuration = new CacheDuration(network.NetworkId, network.NetworkName, dm.DataMartId, dm.DataMartName, dm.EnableResponseCaching, dm.DaysToRetainCacheItems);
CheckCache(BaseCachePath, cacheDuration);
DataMartCacheDurations.Add(cacheDuration);
});
}
static void CheckCache(string baseCachePath, CacheDuration cache)
{
if (cache.Enabled == false || cache.Duration == TimeSpan.Zero || cache.Duration == TimeSpan.MaxValue)
{
//do not remove files if caching is not enabled, or duration is for infinity
//should this clear any existing files?
return;
}
string cachePath = Path.Combine(baseCachePath, cache.NetworkID.ToString(), cache.DataMartID.ToString("D"));
if (!Directory.Exists(cachePath))
{
//no cache files to check
return;
}
log.Debug($"Checking cache for expired entries for Network:{ cache.Network }, DataMart:{ cache.DataMart }, path:{ cachePath }");
string[] requestDirectories = Directory.GetDirectories(cachePath);
if (requestDirectories.Length == 0)
{
log.Debug($"No cache entries for Network:{ cache.Network }, DataMart:{ cache.DataMart }, path:{ cachePath }");
return;
}
Parallel.ForEach(requestDirectories, (directory) => {
string[] filePaths = Directory.GetFiles(directory, "*.meta");
foreach (string path in filePaths)
{
TimeSpan age = DateTime.UtcNow - File.GetLastWriteTimeUtc(path);
if (age > cache.Duration)
{
string dataPath = Path.ChangeExtension(path, "data");
try
{
log.Debug("Deleting expired cache document meta:" + path);
File.Delete(path);
log.Debug("Deleting expired cache document data:" + dataPath);
File.Delete(dataPath);
}catch (IOException ex)
{
//log and continue
log.Error($"Error deleting expired cache document:{ path }, data:{ dataPath }", ex);
}
}
}
});
}