/// <summary>
/// 设置缓存,数据类型为Hash
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="node"></param>
/// <returns></returns>
public async Task SetHashAsync <T>(CacheNode <T> node)
{
await Task.Run(() =>
{
var db = RedisCacheConnection.CreateInstance().Database;
var batch = db.CreateBatch();
var maps = ToMap(node.Data);
if (node.CacheTime != default(TimeSpan))
{
var currentTime = DateTime.Now;
maps.Add("_ExpiryTime_", currentTime.Add(node.CacheTime).ToString());
}
foreach (var map in maps)
{
batch.HashSetAsync(node.Key, map.Key, map.Value);
}
batch.Execute();
});
}
public async Task InvokeAsync(InvocationContext context)
{
Console.WriteLine("11");
policies.TryGetValue(context.Method, out Policy policy);
lock (policies)
{
if (policy == null)
{
//创建一个空的Policy
policy = Policy.NoOpAsync();
//启用熔断
if (IsEnableBreaker)
{
policy = policy.WrapAsync(
Policy.Handle <Exception>()
.CircuitBreakerAsync(ExceptionsAllowedBeforeBreaking, TimeSpan.FromMilliseconds(MillisecondsOfBreak)));
}
//启用超时
if (TimeOutMilliseconds > 0)
{
policy = policy.WrapAsync(
Policy.TimeoutAsync(
() => TimeSpan.FromMilliseconds(TimeOutMilliseconds), Polly.Timeout.TimeoutStrategy.Pessimistic));
}
//启用重试
if (MaxRetryCount > 0)
{
policy = policy.WrapAsync(
Policy.Handle <Exception>()
.WaitAndRetryAsync(MaxRetryCount, i => TimeSpan.FromMilliseconds(RetryIntervalMilliseconds)));
}
//放入
policies.TryAdd(context.Method, policy);
}
}
Context pollyCtx = new Context();
pollyCtx["aspectContext"] = context;
//启用缓存
if (CacheTTLMilliseconds > 0)
{
//用类名+方法名+参数的下划线连接起来作为缓存key
string cacheKey = "Cache_Key_" + context.Method.DeclaringType + "." + context.Method + string.Join("_", context.Arguments);
RedisCache cache = new RedisCache();
var value = cache.Get(cacheKey);
if (!string.IsNullOrEmpty(value))
{
context.ReturnValue = value;
}
else
{
//如果缓存中没有，则执行实际被拦截的方法
await policy.ExecuteAsync(ctx => _next(context), pollyCtx);
var tp = new TimeSpan(0, 0, 0, 0, CacheTTLMilliseconds);
var node = new CacheNode <string> {
Key = cacheKey, Data = context.ReturnValue.ToObjString(), CacheTime = tp
};
cache.Set(node);
}
}
else//如果没有启用缓存，就直接执行业务方法
{
await policy.ExecuteAsync(ctx => _next(context), pollyCtx);
}
}
