private async Task <string> GetPageContent(string url)
{
IWebRequestHelper webRequestHelper = ServiceLocator.Current.GetInstance <IWebRequestHelper>();
IWebCache webCache = ServiceLocator.Current.GetInstance <IWebCache>();
ICacheItem cacheItem = await webCache.Get(url, TimeSpan.FromDays(CacheDurationDays), k =>
{
return(webRequestHelper.GetDataAsync(url, null, null, 30000, null, new Dictionary <HttpRequestHeader, string>
{
{ HttpRequestHeader.Accept, "application/json" }
}));
});
if (cacheItem == null)
{
return(null);
}
if (cacheItem.Data == null)
{
return(null);
}
return(cacheItem.GetUTF8());
}
/// <summary>
/// Initializes a new instance of the <see cref="BlogController" /> class.
/// </summary>
/// <param name="blogRepository">The blog repository.</param>
/// <param name="tempDataProvider">The temporary data provider</param>
/// <param name="webCache">Web cache to clear when modifying posts</param>
/// <param name="comments">Disqus comments service</param>
public BlogController(IBlogRepository blogRepository, ITempDataProvider tempDataProvider, IWebCache webCache, IDisqusComments comments)
{
_blogRepository = blogRepository;
_webCache = webCache;
_comments = comments;
// TODO: This shouldn't be required to be passed in the constructor - Can set it as a property.
TempDataProvider = tempDataProvider;
}
protected BaseAsyncWebClient([NotNull] IWebCache cache)
{
if (cache == null)
{
throw new ArgumentNullException("cache");
}
_cache = cache;
}
/// <summary>
/// Initializes a new instance of the <see cref="BlogController" /> class.
/// </summary>
/// <param name="blogRepository">The blog repository.</param>
/// <param name="tempDataProvider">The temporary data provider</param>
/// <param name="webCache">Web cache to clear when modifying posts</param>
/// <param name="comments">Disqus comments service</param>
public BlogController(IBlogRepository blogRepository, ITempDataProvider tempDataProvider, IWebCache webCache, IDisqusComments comments)
{
_blogRepository = blogRepository;
_webCache = webCache;
_comments = comments;
// TODO: This shouldn't be required to be passed in the constructor - Can set it as a property.
TempDataProvider = tempDataProvider;
}
public DataUploader(
IWebRequest webRequest,
IWebCache webCache,
IInternetConnectivity internetConnectivity)
{
_webRequest = webRequest ?? throw new ArgumentNullException(nameof(webRequest));
_webCache = webCache ?? throw new ArgumentNullException(nameof(webCache));
_internetConnectivity = internetConnectivity ?? throw new ArgumentNullException(nameof(internetConnectivity));
}
private void UpdateSubPlaylistCache(Uri playlist)
{
if (_subPlaylistCache != null && !(_subPlaylistCache.WebReader.BaseAddress != playlist))
{
return;
}
_subPlaylistCache?.WebReader.Dispose();
_subPlaylistCache = _webReader.CreateWebCache(playlist, ContentKind.Playlist);
}
public OfflineUnsafeWebRequest(
IWebRequest webRequest,
IWebCache webCache,
IInternetConnectivity internetConnectivity)
{
_webRequest = webRequest;
_webCache = webCache;
_internetConnectivity = internetConnectivity;
}
protected BaseAsyncWebClient([NotNull] IWebCache cache)
{
if (cache == null)
{
throw new ArgumentNullException("cache");
}
CallFactory = new RestfulCallFactory();
_cache = cache;
}
public AsyncDataProvider([NotNull] IWebCache cache, [NotNull] UniversitiesCache universitiesCache) : base(cache)
{
if (universitiesCache == null)
{
throw new ArgumentNullException("universitiesCache");
}
_universitiesCache = universitiesCache;
_universitiesCache.Load();
}
private void UpdateSubPlaylistCache(Uri playlist)
{
if (this._subPlaylistCache != null && !(this._subPlaylistCache.WebReader.BaseAddress != playlist))
{
return;
}
if (null != this._subPlaylistCache)
{
this._subPlaylistCache.WebReader.Dispose();
}
this._subPlaylistCache = WebReaderExtensions.CreateWebCache(this._webReader, playlist, ContentKind.Playlist, (ContentType)null);
}
public static IWebRequest WithOffline(
this IWebRequest webRequest,
IWebCache webCache,
IInternetConnectivity internetConnectivity)
{
return(new OfflineUnsafeWebRequest(
new OfflineSafeWebRequest(
webRequest,
webCache,
internetConnectivity),
webCache,
internetConnectivity));
}
public CacheAbstraction(IWebCache iwebc)
{
_iwebCache = iwebc;
}
public AsyncDataProvider([NotNull] IWebCache cache)
: base(cache)
{
}
public CacheAbstraction(IWebCache webCache)
{
_iwebCache = webCache;
}
void UpdateSubPlaylistCache(Uri playlist)
{
if (null == _subPlaylistCache || _subPlaylistCache.WebReader.BaseAddress != playlist)
{
if (null != _subPlaylistCache)
_subPlaylistCache.WebReader.Dispose();
_subPlaylistCache = _webReader.CreateWebCache(playlist, ContentKind.Playlist, ContentType);
}
}
public QuizService(IWebCache webCache)
{
_webCache = webCache;
LoadQuizzes();
}
public CacheAbstraction(IWebCache iCache)
{
iWebCache = iCache;
}
public Task <TCached> ReadAsync <TCached>(Uri uri, Func <Uri, byte[], TCached> factory, ContentKind contentKind, ContentType contentType, CancellationToken cancellationToken) where TCached : class
{
TaskCompletionSource <TCached> tcs = (TaskCompletionSource <TCached>)null;
bool lockTaken = false;
Dictionary <Uri, WebCacheManager.CacheEntry> dictionary;
WebCacheManager.CacheEntry cacheEntry;
try
{
Monitor.Enter((object)(dictionary = this._cache), ref lockTaken);
if (this._cache.TryGetValue(uri, out cacheEntry))
{
if (cacheEntry.ReadTask.IsCompleted && cacheEntry.Age > TimeSpan.FromSeconds(5.0))
{
tcs = new TaskCompletionSource <TCached>();
cacheEntry.ReadTask = (Task)tcs.Task;
}
}
else
{
IWebCache webCache = WebReaderExtensions.CreateWebCache(this._webReader, uri, contentKind, contentType);
tcs = new TaskCompletionSource <TCached>();
cacheEntry = new WebCacheManager.CacheEntry()
{
WebCache = webCache,
ReadTask = (Task)tcs.Task
};
this._cache[uri] = cacheEntry;
}
}
finally
{
if (lockTaken)
{
Monitor.Exit((object)dictionary);
}
}
if (null == tcs)
{
return((Task <TCached>)cacheEntry.ReadTask);
}
Task <TCached> task = cacheEntry.WebCache.ReadAsync <TCached>(factory, cancellationToken, (WebResponse)null);
task.ContinueWith((Action <Task <TCached> >)(t =>
{
cacheEntry.ResetTime();
if (null != t.Exception)
{
tcs.TrySetCanceled();
}
else if (t.IsCanceled)
{
tcs.TrySetCanceled();
}
else
{
tcs.TrySetResult(task.Result);
}
}), cancellationToken);
return(tcs.Task);
}
public AsyncWebClient([NotNull] IWebCache cache) : base(cache)
{
}
