public override async Task Get(HttpListenerContext httpContext, params string[] matches)
{
var key = matches[0];
CacheEntry entry;
var hasValue = _cache.TryGet(key, out entry);
if (!hasValue)
{
httpContext.Response.StatusCode = 404;
httpContext.Response.Close();
}
else
{
var contentKey = string.Format("content:{0}", key);
CacheEntry cacheEntry;
var hasContent = _cache.TryGet(contentKey, out cacheEntry);
string contentType = httpContext.Request.ContentType;
if (hasContent)
{
var contentTypeBytes = cacheEntry.Data;
//httpContext.Request.ContentType
contentType = Encoding.UTF8.GetString(contentTypeBytes);
}
httpContext.Response.ContentType = contentType;
var value = entry.Data;// TODO: does this need converting, based upon content type
var outputStream = httpContext.Response.OutputStream;
await outputStream.WriteAsync(value, 0, value.Length /*, _cancellationTokenSource.Token*/);
httpContext.Response.Close();
}
}
private void Subscribe(IObserver <string> responseObserver, string key)
{
CacheEntry cacheEntry;
if (_cache.TryGet(key, out cacheEntry))
{
var notification = new StoreNotification
{
Key = key,
Data = cacheEntry.Data,
EventId = cacheEntry.EventId,
Expiry = cacheEntry.Expiry,
Flags = cacheEntry.Flags,
Operation = StoreOperation.Add
};
var combinedNotifications = Observable.Return(notification).Combine(_cache.Notifications); // TODO: must be a simpler way of doing this...
_subscriptions[key] = combinedNotifications.
OfType <IKeyCacheNotification>().
Where(k => k.Key == key).
Select(JsonFromNotifications).
Subscribe(responseObserver);
}
else
{
_subscriptions[key] = _cache.Notifications.
OfType <IKeyCacheNotification>().
Where(k => k.Key == key).
Select(JsonFromNotifications).
Subscribe(responseObserver);
}
}