public async Task AddEntryAsync(CacheEntry entry, HttpResponseMessage response)
{
CacheEntryContainer cacheEntryContainer = GetOrCreateContainer(entry.Key);
lock (syncRoot)
{
cacheEntryContainer.Entries.Add(entry);
_responseCache[entry.VariantId] = response;
}
}
public static CacheQueryResult ReturnStored(CacheEntry cacheEntry, HttpResponseMessage response)
{
HttpCache.UpdateAgeHeader(response);
return new CacheQueryResult()
{
Status = CacheStatus.ReturnStored,
SelectedEntry = cacheEntry,
SelectedResponse = response
};
}
public async Task UpdateEntryAsync(CacheEntry entry, HttpResponseMessage response)
{
CacheEntryContainer cacheEntryContainer = GetOrCreateContainer(entry.Key);
lock (syncRoot)
{
var oldentry = cacheEntryContainer.Entries.First(e => e.VariantId == entry.VariantId);
cacheEntryContainer.Entries.Remove(oldentry);
cacheEntryContainer.Entries.Add(entry);
_responseCache[entry.VariantId] = response;
}
}
private static void UpdateCacheEntry(HttpResponseMessage updatedResponse, CacheEntry entry)
{
var newExpires = HttpCache.GetExpireDate(updatedResponse);
if (newExpires > entry.Expires)
{
entry.Expires = newExpires;
}
entry.Etag = updatedResponse.Headers.ETag != null ? updatedResponse.Headers.ETag.Tag : null;
if (updatedResponse.Content != null)
{
entry.LastModified = updatedResponse.Content.Headers.LastModified;
}
}
public async Task StoreResponseAsync(HttpResponseMessage response)
{
var primaryCacheKey = new CacheKey(response.RequestMessage.RequestUri, response.RequestMessage.Method);
CacheEntry selectedEntry = null;
IEnumerable<CacheEntry> cacheEntries = await _contentStore.GetEntriesAsync(primaryCacheKey).ConfigureAwait(false);
if (cacheEntries != null)
{
selectedEntry = MatchVariant(response.RequestMessage, cacheEntries);
}
if (selectedEntry != null)
{
UpdateCacheEntry(response, selectedEntry);
await _contentStore.UpdateEntryAsync(selectedEntry, response).ConfigureAwait(false);
}
else
{
selectedEntry = new CacheEntry(primaryCacheKey, response);
UpdateCacheEntry(response, selectedEntry);
await _contentStore.AddEntryAsync(selectedEntry, response).ConfigureAwait(false);
}
}
