internal static int CalcCacheSeconds(ControllerActionDescriptor controllerActionDescriptor, out string cacheTimeSetting)
{
object[] responseCache;
if (controllerActionDescriptor.ControllerTypeInfo.Name.EndsWith("Proxy"))
{
// 代理类，从源类型中查找相关特性
var sourceControllerType = AppManager.ProxyOriginalTypes[controllerActionDescriptor.ControllerTypeInfo.FullName];
var methodInfo = sourceControllerType.GetMethod(controllerActionDescriptor.MethodInfo.Name);
responseCache = methodInfo.GetCustomAttributes(typeof(CacheAttribute), true);
}
else
{
responseCache = controllerActionDescriptor.MethodInfo.GetCustomAttributes(typeof(CacheAttribute), true);
}
if (responseCache.Count() != 1)
{
cacheTimeSetting = string.Empty;
return(0);
}
var cache = responseCache[0] as CacheAttribute;
cacheTimeSetting = cache.CacheProfileName;
return(CacheTimeSettings.GetCacheSeconds(cache.CacheProfileName));
}
private static T GetAndCache <T>(Delegate func, string cacheTimeSetting, string flag = "", params object[] input)
{
var cacheResult = default(T);
var cacheKey = GetDataCacheKey <T>(func, flag);
var cacheTime = TimeSpan.FromSeconds(CacheTimeSettings.GetCacheSeconds(cacheTimeSetting));
// 从本地缓存返回
AppCache.TryGetValue(cacheKey, out cacheResult);
// 从本地文件返回
if (cacheResult == null && IsStatic(cacheTimeSetting))
{
var cacheFileName = GetCacheFileName(cacheKey);
if (File.Exists(cacheFileName))
{
cacheResult = JsonConvert.DeserializeObject <T>(File.ReadAllText(cacheFileName));
AppCache.Set(cacheKey, cacheResult, cacheTime);// 恢复本地缓存
}
}
// 从redis缓存返回
if (cacheResult == null && !IsStatic(cacheTimeSetting))
{
cacheResult = RedisCache.Get <T>(cacheKey);
if (cacheResult != null)
{
AppCache.Set(cacheKey, cacheResult, cacheTime);// 恢复本地缓存
//if (IsStatic(cacheTimeSetting))
//{
// CacheFile(cacheKey, JsonConvert.SerializeObject(cacheResult), typeof(T).FullName);
//}
}
}
// 从数据源返回
if (cacheResult == null)
{
// 如果其他线程已在获取，则等待，超时再重新获取
var isNeedUpdate = CacheManager.CheckUpdateAndFlag(cacheKey, cacheTimeSetting);//, "UpdateCache:Data"
if (!isNeedUpdate)
{
var index = 0;
while (cacheResult == null && index < 30)
{
index += 1;
AppCache.TryGetValue <T>(cacheKey, out cacheResult);
if (cacheResult == null)
{
cacheResult = RedisCache.Get <T>(cacheKey);
}
if (cacheResult == null)
{
System.Threading.Thread.Sleep(100);
}
Lib.StopwatchLog.RecordElapsedMilliseconds($"1 {cacheKey}");
}
if (cacheResult != null)
{
return(cacheResult);
}
}
cacheResult = (T)func.DynamicInvoke(input);
Set(cacheKey, cacheResult, cacheTime, true, IsStatic(cacheTimeSetting));
return(cacheResult);
}
if (cacheTimeSetting != CacheTimeSettings.Second && CacheManager.CheckUpdateAndFlag(cacheKey, cacheTimeSetting) == true)
{
Task.Run(async() =>
{
await Task.Delay(1);
cacheResult = (T)func.DynamicInvoke(input);
Set(cacheKey, cacheResult, cacheTime, false, IsStatic(cacheTimeSetting));
});
}
// 缓存预热，每隔10分钟，先异步更新缓存，并续期，待下次访问时替换为最新缓存
return(cacheResult);
}
