public bool ObjectHasChanged <T>(string key, string type, T obj)
{
if (obj == null)
{
return(true);
}
key = key.ToLower();
string objSer = obj.Serialize <T>();
if (String.IsNullOrEmpty(objSer))
{
return(true);
}
CacheObj foundCacheObj = ObjectHash.Find(a => a.Key.Equals(key, StringComparison.InvariantCultureIgnoreCase) && a.Type.Equals(type, StringComparison.InvariantCultureIgnoreCase));
if (foundCacheObj == null)
{
ObjectHash.Add(new CacheObj()
{
Key = key, Type = type, Hash = GetSHA1Hash(objSer, Encoding.UTF8).ToString()
});
return(true);
}
else if (foundCacheObj.Hash != GetSHA1Hash(objSer, Encoding.UTF8).ToString())
{
foundCacheObj.Hash = GetSHA1Hash(objSer, Encoding.UTF8).ToString();
return(true);
}
return(false);
}
public bool RemoveFromCache(string key, string type)
{
CacheObj foundCacheObj = ObjectHash.Find(a => a.Key.Equals(key, StringComparison.InvariantCultureIgnoreCase) && a.Type.Equals(type, StringComparison.InvariantCultureIgnoreCase));
if (foundCacheObj != null)
{
ObjectHash.Remove(foundCacheObj);
}
return(true);
}
private static void loadCacheObjFromFile()
{
var path = Path.Combine(AssemblyUtils.getCurrentDirectory(), "hashcache.json");
if (File.Exists(path))
{
cache = JsonConvert.DeserializeObject <CacheObj>(File.ReadAllText(path), new JsonSerializerSettings()
{
ObjectCreationHandling = ObjectCreationHandling.Replace
});
}
}
public void Add(string key, object value, DateTime expire)
{
if (expire == default(DateTime))
{
return;
}
var cache = new CacheObj <object> {
Expire = expire, Value = value
};
_dict[key] = cache;
}
private static async Task <string> GetData(string url)
{
if (Cache.TryGetValue(url, out var cache) && cache.Valid)
{
return(cache.Data);
}
var request = CreateRequest(url);
using (var response = (HttpWebResponse)await request.GetResponseAsync())
using (var responseStream = response.GetResponseStream())
using (var reader = new StreamReader(responseStream))
{
var data = reader.ReadToEnd();
Cache[url] = new CacheObj(data);
return(data);
}
}
public static async Task <bool> IsStreaming(int userId)
{
try
{
var data = await GetData(Urls.Stream(userId));
var dynData = JsonConvert.DeserializeObject <dynamic>(data.Data);
bool isStreaming = dynData?.stream != null;
if (isStreaming)
{
Cache[StreamDataKey] = new CacheObj(data);
}
return(isStreaming);
}
catch (Exception e)
{
Log.Error(e);
return(false);
}
}
/// <summary>
/// 执行前读取站点配置信息
/// </summary>
/// <param name="filterContext"></param>
protected override void OnActionExecuting(ActionExecutingContext filterContext)
{
CacheObj obj = cacheService.Get(Constant.CacheKey.SiteConfigCacheKey);
this.Config = (obj != null && obj.value != null) ? (obj.value as SiteConfig) : null;
if (this.Config == null)
{
this.Config = siteConfigService.LoadConfig(Constant.SiteConfigPath);
cacheService.Add(Constant.CacheKey.SiteConfigCacheKey,
new CacheObj()
{
value = Config,
AbsoluteExpiration = new TimeSpan(1, 0, 0, 0)
});
}
if (this.Config != null)
{
ViewData["_SiteConfig"] = this.Config;
}
}
protected virtual string GetCurrentTheme()
{
string theme = "";
//SiteConfig config = CacheHelper.GetCache(Constant.CacheKey.SiteConfigCacheKey) as SiteConfig;
CacheObj obj = cacheService.Get(Constant.CacheKey.SiteConfigCacheKey);
SiteConfig config = (obj != null && obj.value != null) ? (obj.value as SiteConfig) : null;
if (config == null)
{
config = siteConfigService.LoadConfig(Constant.SiteConfigPath);
cacheService.Add(Constant.CacheKey.SiteConfigCacheKey,
new CacheObj()
{
value = config,
AbsoluteExpiration = new DateTimeOffset(DateTime.Now).AddDays(1)
});
//CacheHelper.SetCache(Constant.CacheKey.SiteConfigCacheKey, config);
}
theme = config.SiteTheme;
return(theme);
}
public HTools.CacheObj Get(string key)
{
//内存和磁盘双重获取
if (string.IsNullOrEmpty(key))
{
return(null);
}
CacheObj obj = m_mcache.Get(key);
if (obj == null)
{
obj = m_dcache.Get(key);
if (obj != null)
{
m_mcache.Add(key, obj);
}
return(obj);
}
else
{
return(obj);
}
}