private async Task <Tuple <int, Size, string> > GetImageSize(WebClient client, string uri, int index)
{
if (_imageSizeCache.Exists(uri))
{
var cached = _imageSizeCache.Get(uri);
return(cached == Size.Empty ? null : Tuple.Create(index, cached, uri));
}
var size = Size.Empty;
try
{
using (var stream = await client.OpenReadTaskAsync(uri))
{
var image = Image.FromStream(stream);
size = IsAnimationGif(image) ? Size.Empty : image.Size;
}
}
catch (Exception)
{
size = Size.Empty;
}
_imageSizeCache.Add(uri, size, 1440); // 24時間
return(size == Size.Empty ? null : Tuple.Create(index, size, uri));
}
public T ExecuteWithCache <T>(string key, Func <T> func, DateTimeOffset expiryOffset, params object[] cacheByParams)
{
if (cacheByParams != null && cacheByParams.Any())
{
var hash = JsonConvert.SerializeObject(cacheByParams).GetHashCode();
key += hash;
}
var cachedResult = _objectCache.Get(key);
if (cachedResult != null)
{
if (cachedResult is T)
{
return((T)cachedResult);
}
return((T)Convert.ChangeType(cachedResult, typeof(T)));
}
var policy = new CacheItemPolicy();
policy.AbsoluteExpiration = expiryOffset;
var result = func();
_objectCache.Add(key, result, policy);
return(result);
}
public override object CreateInstance(TypeId id)
{
var registration = _typeCache.Find(id);
if (registration == null)
{
return(null);
}
var o = CreateObject(
registration.GetConstructionType(id.Type),
registration.Dependencies);
if (registration.ShouldCache)
{
_objectCache.Add(id, o);
}
return(o);
}
private async Task UpdateCache(long id)
{
var cacheKey = id.ToString();
var list = await _refListHandler.GetRefListAsync(id);
if (list != null)
{
var listViewModel = Mapper.Map <RefListViewModel>(list);
var refViewModels = Mapper.Map <ICollection <RefViewModel> >(list.Refs);
_refListViewModelCache.Add(cacheKey, listViewModel, 10);
_refViewModelsCache.Add(cacheKey, refViewModels, 10);
}
}
/// <summary>
/// HttpClientではhttp://www.yomiuri.co.jp/で文字化けが起こった。(Shift_JISだから?)
/// </summary>
private async Task <string> GetHtml(string url)
{
if (_htmlCache.Exists(url))
{
return(_htmlCache.Get(url));
}
if (url == null)
{
throw new ArgumentNullException("url");
}
var result = default(Uri);
if (!Uri.TryCreate(url, UriKind.Absolute, out result))
{
throw new ArgumentException(string.Format("Illegal url format: {0}", url));
}
var client = new WebClient();
var data = await client.DownloadDataTaskAsync(url);
var html = "";
var headerContentTypeValue = client.ResponseHeaders[HttpResponseHeader.ContentType];
if (!string.IsNullOrWhiteSpace(headerContentTypeValue))
{
var contentType = new ContentType(headerContentTypeValue);
if (contentType.CharSet != null)
{
html = Encoding.GetEncoding(contentType.CharSet).GetString(data);
}
}
if (string.IsNullOrWhiteSpace(html))
{
var ascii = Encoding.ASCII.GetString(data);
var match = MetaCharsetRegex.Match(ascii);
var metaCharsetValue = match.Success ? match.Groups[1].Value : "";
if (!string.IsNullOrWhiteSpace(metaCharsetValue))
{
try
{
var enc = Encoding.GetEncoding(metaCharsetValue);
html = enc.GetString(data);
}
catch (ArgumentException)
{
/// Encoding.GetEncoding(metaCharsetValue)で例外が起きた場合、例外処理せずに次の処理に行く
}
}
}
if (string.IsNullOrWhiteSpace(html))
{
var ascii = Encoding.ASCII.GetString(data);
var match = MetaHttpEquivContentTypeRegex.Match(ascii);
var metaContentTypeValue = match.Success ? match.Groups[1].Value : "";
if (!string.IsNullOrWhiteSpace(metaContentTypeValue))
{
var contentType = new ContentType(metaContentTypeValue);
if (contentType.CharSet != null)
{
html = Encoding.GetEncoding(contentType.CharSet).GetString(data);
}
}
}
if (string.IsNullOrWhiteSpace(html))
{
html = Encoding.UTF8.GetString(data);
}
if (!string.IsNullOrWhiteSpace(html))
{
_htmlCache.Add(url, html, 1440); // 24時間
}
return(html);
}
public void Add <T, T2, T3>(List <T> items) where T : BaseDataEntity <T2, T3>
{
Dictionary <T2, T> dictionary = items.ToDictionary(item => item.ItemId);
_objectCache.Add(typeof(T).Name, dictionary, DateTime.Now.AddDays(2));
}