private async Task ProcessGetOrCreateAsync(AspectContext context, AspectDelegate next)
{
if (GetMethodAttributes(context.ServiceMethod) is EniymCacheGetOrCreateAttribute attribute)
{
if (string.IsNullOrEmpty(attribute.Template))
{
throw new ArgumentNullException($"please set the cache key '{nameof(attribute.Template)}'");
}
var returnType = context.IsAsync()
? context.ServiceMethod.ReturnType.GetGenericArguments().First()
: context.ServiceMethod.ReturnType;
var cacheKey = KeyGenerator.GetCacheKey(context, attribute.Template);
Logger.LogInformation($"KeyGenerator.GetCacheKey: '{cacheKey}'");
object cacheValue = null;
try
{
cacheValue = await CacheProvider.GetAsync(cacheKey, returnType);
}
catch
{
Logger.LogError($"An error occurred while reading cache '{cacheKey}'.");
cacheValue = null;
}
if (cacheValue != null)
{
context.ReturnValue = context.IsAsync()
? TaskResultMethod
.GetOrAdd(returnType,
t => typeof(Task).GetMethods()
.First(p => p.Name == "FromResult" && p.ContainsGenericParameters)
.MakeGenericMethod(returnType)).Invoke(null, new object[] { cacheValue })
: cacheValue;
}
else
{
await next(context);
var returnValue = context.IsAsync()
? await context.UnwrapAsyncReturnValue()
: context.ReturnValue;
if (returnValue != null)
{
await CacheProvider.SetAsync(cacheKey, returnValue, attribute.CacheSeconds);
}
}
}
else
{
await next(context);
}
}
public async override Task Invoke(AspectContext context, AspectDelegate next)
{
Assert.False(context.IsAsync());
await context.Invoke(next);
Assert.True(context.IsAsync());
var result = context.UnwrapAsyncReturnValue();
Assert.Equal(100, result);
}
/// <summary>
/// Proceeds the able async.
/// </summary>
/// <returns>The able async.</returns>
/// <param name="context">Context.</param>
/// <param name="next">Next.</param>
private async Task ProceedAbleAsync(AspectContext context, AspectDelegate next)
{
if (context.ServiceMethod.GetCustomAttributes(true).FirstOrDefault(x => x.GetType() == typeof(EasyCachingAbleAttribute)) is EasyCachingAbleAttribute attribute)
{
var returnType = context.IsAsync()
? context.ServiceMethod.ReturnType.GetGenericArguments().First()
: context.ServiceMethod.ReturnType;
var cacheKey = KeyGenerator.GetCacheKey(context.ServiceMethod, context.Parameters, attribute.CacheKeyPrefix);
object cacheValue = await CacheProvider.GetAsync(cacheKey, returnType);
if (cacheValue != null)
{
if (context.IsAsync())
{
//#1
//dynamic member = context.ServiceMethod.ReturnType.GetMember("Result")[0];
//dynamic temp = System.Convert.ChangeType(cacheValue.Value, member.PropertyType);
//context.ReturnValue = System.Convert.ChangeType(Task.FromResult(temp), context.ServiceMethod.ReturnType);
//#2
context.ReturnValue =
TypeofTaskResultMethod.GetOrAdd(returnType, t => typeof(Task).GetMethods().First(p => p.Name == "FromResult" && p.ContainsGenericParameters).MakeGenericMethod(returnType)).Invoke(null, new object[] { cacheValue });
}
else
{
//context.ReturnValue = System.Convert.ChangeType(cacheValue.Value, context.ServiceMethod.ReturnType);
context.ReturnValue = cacheValue;
}
}
else
{
// Invoke the method if we don't have a cache hit
await next(context);
if (context.IsAsync())
{
//get the result
var returnValue = await context.UnwrapAsyncReturnValue();
await CacheProvider.SetAsync(cacheKey, returnValue, TimeSpan.FromSeconds(attribute.Expiration));
}
else
{
await CacheProvider.SetAsync(cacheKey, context.ReturnValue, TimeSpan.FromSeconds(attribute.Expiration));
}
}
}
else
{
// Invoke the method if we don't have EasyCachingAbleAttribute
await next(context);
}
}
private async Task DoCaching(
AspectContext context,
AspectDelegate next,
CachingAttribute cachingAttribute
)
{
var cacheProvider = context.ServiceProvider.GetService(typeof(ICachingProvider)) as ICachingProvider;
var cachingKey = GenerateCachingKey(context, cachingAttribute);
object cacheValue = await cacheProvider.GetAsync <object>(cachingKey);
if (cacheValue != null)// 若读取到缓存就直接返回，否则设置缓存
{
if (context.IsAsync())
{
PropertyInfo propertyInfo = context.ServiceMethod.ReturnType.GetMember("Result")[0] as PropertyInfo;
dynamic returnValue = JsonConvert.DeserializeObject(cacheValue.ToString(), propertyInfo.PropertyType);
context.ReturnValue = Task.FromResult(returnValue);
}
else
{
context.ReturnValue = JsonConvert.DeserializeObject(cacheValue.ToString(), context.ServiceMethod.ReturnType);
}
}
else
{
await next(context);
// 设置缓存
if (!string.IsNullOrWhiteSpace(cachingKey))
{
object returnValue = null;
if (context.IsAsync())
{
returnValue = await context.UnwrapAsyncReturnValue();
}
else
{
returnValue = context.ReturnValue;
}
await cacheProvider.SetAsync(
cachingKey,
returnValue,
TimeSpan.FromSeconds(cachingAttribute.Expiration)
);
}
}
}
/// <summary>
/// Proceeds the able async.
/// </summary>
/// <returns>The able async.</returns>
/// <param name="context">Context.</param>
/// <param name="next">Next.</param>
private async Task ProceedAbleAsync(AspectContext context, AspectDelegate next)
{
var attribute = context.ServiceMethod.GetCustomAttributes(true).FirstOrDefault(x => x.GetType() == typeof(EasyCachingAbleAttribute)) as EasyCachingAbleAttribute;
if (attribute != null)
{
var cacheKey = KeyGenerator.GetCacheKey(context.ServiceMethod, context.Parameters, attribute.CacheKeyPrefix);
var cacheValue = await CacheProvider.GetAsync <object>(cacheKey);
if (cacheValue.HasValue)
{
if (context.IsAsync())
{
//#1
dynamic member = context.ServiceMethod.ReturnType.GetMember("Result")[0];
dynamic temp = System.Convert.ChangeType(cacheValue.Value, member.PropertyType);
context.ReturnValue = System.Convert.ChangeType(Task.FromResult(temp), context.ServiceMethod.ReturnType);
//#2
//...
}
else
{
context.ReturnValue = System.Convert.ChangeType(cacheValue.Value, context.ServiceMethod.ReturnType);
}
}
else
{
// Invoke the method if we don't have a cache hit
await next(context);
if (context.IsAsync())
{
//get the result
var returnValue = await context.UnwrapAsyncReturnValue();
await CacheProvider.SetAsync(cacheKey, returnValue, TimeSpan.FromSeconds(attribute.Expiration));
}
else
{
await CacheProvider.SetAsync(cacheKey, context.ReturnValue, TimeSpan.FromSeconds(attribute.Expiration));
}
}
}
else
{
// Invoke the method if we don't have EasyCachingAbleAttribute
await next(context);
}
}
public override async Task Invoke(AspectContext context, AspectDelegate next)
{
var logger = LogManager.GetLogger("ProxyInterceptor");
var parameters = JsonConvert.SerializeObject(context.Parameters);
logger.Info($"Call api {context.ServiceMethod.DeclaringType.FullName}->{context.ServiceMethod.Name} Paramters：{parameters}");
await next(context);
if (context.IsAsync())
{
if (context.ServiceMethod.ReturnType.FullName == "System.Threading.Tasks.Task")
{
logger.Info($"Result value: void");
}
else
{
var result = await context.UnwrapAsyncReturnValue();
var res = JsonConvert.SerializeObject(result);
logger.Info($"Result value: {res}");
}
}
else
{
if (context.ReturnValue != null)
{
var res = JsonConvert.SerializeObject(context.ReturnValue);
logger.Info($"Result value: {res}");
}
}
}
public async override Task Invoke(AspectContext context, AspectDelegate next)
{
var Parameters = context.Parameters;
await context.Invoke(next);
var result = context.IsAsync() ? await context.UnwrapAsyncReturnValue(): context.ReturnValue;
}
public async override Task Invoke(AspectContext context, AspectDelegate next)
{
if (_cacheType.GetInterfaces().Contains(typeof(IDistributedCache)))
{
}
//判断是否是异步方法
bool isAsync = context.IsAsync();
//if (context.ImplementationMethod.GetCustomAttribute(typeof(System.Runtime.CompilerServices.AsyncStateMachineAttribute)) != null)
//{
// isAsync = true;
//}
//先判断方法是否有返回值，无就不进行缓存判断
Type methodReturnType = context.GetReturnParameter().Type;
if (methodReturnType == typeof(void) || methodReturnType == typeof(Task) || methodReturnType == typeof(ValueTask))
{
await next(context);
return;
}
Type returnType = methodReturnType;
if (isAsync)
{
//取得异步返回的类型
returnType = returnType.GenericTypeArguments.FirstOrDefault();
}
//获取方法参数名
//string param = CommonHelper.ObjectToJsonString(context.Parameters);
////获取方法名称，也就是缓存key值
//string key = "Methods:" + context.ImplementationMethod.DeclaringType.FullName + "." + context.ImplementationMethod.Name;
//var cache = context.ServiceProvider.GetService<ICacheHelper>();
}
/// <summary>
/// Processes the put async.
/// </summary>
/// <returns>The put async.</returns>
/// <param name="context">Context.</param>
private async Task ProcessPutAsync(AspectContext context)
{
if (GetMethodAttributes(context.ServiceMethod).FirstOrDefault(x => x.GetType() == typeof(EasyCachingPutAttribute)) is EasyCachingPutAttribute attribute && context.ReturnValue != null)
{
var _cacheProvider = CacheProviderFactory.GetCachingProvider(attribute.CacheProviderName ?? Options.Value.CacheProviderName);
var cacheKey = KeyGenerator.GetCacheKey(context.ServiceMethod, context.Parameters, attribute.CacheKeyPrefix);
try
{
if (context.IsAsync())
{
//get the result
var returnValue = await context.UnwrapAsyncReturnValue();
await _cacheProvider.SetAsync(cacheKey, returnValue, TimeSpan.FromSeconds(attribute.Expiration));
}
else
{
await _cacheProvider.SetAsync(cacheKey, context.ReturnValue, TimeSpan.FromSeconds(attribute.Expiration));
}
}
catch (Exception ex)
{
if (!attribute.IsHightAvailability)
{
throw;
}
else
{
Logger?.LogError(new EventId(), ex, $"Cache provider \"{_cacheProvider.Name}\" set error.");
}
}
}
}
/// <summary>
/// 执行被拦截方法
/// </summary>
/// <param name="context"></param>
/// <param name="next"></param>
/// <returns></returns>
private async Task <object> RunAndGetReturn(AspectContext context, AspectDelegate next)
{
await context.Invoke(next);
return(context.IsAsync()
? await context.UnwrapAsyncReturnValue()
: context.ReturnValue);
}
public override async Task Invoke(AspectContext context, AspectDelegate next)
{
var parameters = context.ServiceMethod.GetParameters();
//判断Method是否包含ref / out参数
if (parameters.Any(it => it.IsIn || it.IsOut))
{
await next(context);
}
else
{
var key = string.IsNullOrEmpty(CacheKey)
? new CacheKey(context.ServiceMethod, parameters, context.Parameters).GetMemoryCacheKey()
: CacheKey;
//返回值类型
var returnType = context.IsAsync()
? context.ServiceMethod.ReturnType.GetGenericArguments().First()
: context.ServiceMethod.ReturnType;
if (_cache.TryGetValue(key, out object value))
{
context.ReturnValue = context.IsAsync()
? _taskResultMethod.MakeGenericMethod(returnType).Invoke(null, new object[] { value })
: value;
return;
}
else
{
await context.Invoke(next);
object returnValue = context.ReturnValue;
if (context.ServiceMethod.IsReturnTask())
{
returnValue = returnValue.GetPropertyValue("Result");
}
_cache.Set(key, returnValue, new MemoryCacheEntryOptions()
{
AbsoluteExpirationRelativeToNow = TimeSpan.FromMinutes(Expiration)
});
//await next(context);
}
}
}
/// <summary>
/// 获取缓存，并处理返回值
/// </summary>
/// <param name="key"></param>
/// <param name="type"></param>
/// <param name="context"></param>
/// <returns></returns>
private object GetCahceValue(string key, Type type, AspectContext context)
{
//从缓存取值
var cacheValue = CacheProvider.Get(key, type);
if (cacheValue != null)
{
context.ReturnValue = context.IsAsync()
? TaskResultMethod.MakeGenericMethod(type).Invoke(null, new object[] { cacheValue })
: cacheValue;
}
return(cacheValue);
}
public override async Task Invoke(AspectContext context, AspectDelegate next)
{
var validator = (MethodInvocationValidator)context.ServiceProvider.GetService(typeof(MethodInvocationValidator));
MethodInfo method;
try
{
method = context.ImplementationMethod;
}
catch
{
method = context.ServiceMethod;
}
var failures = validator.Validate(method, context.Parameters);
var result = failures.ToResult();
if (result.Success)
{
await next(context);
return;
}
if (context.IsAsync())
{
if (context.ImplementationMethod.ReturnType == typeof(Task))
{
ThrowValidationException(result);
//throw new Exception(result.Data.Select(o=>o.Message).ToJoin());
}
else
{
var returnType = context.ImplementationMethod.ReturnType.GenericTypeArguments[0];
if (typeof(IResultBase).IsAssignableFrom(returnType))
{
context.ReturnValue = Task.FromResult(new OperationResponse()
{
Message = result.Message.IsNullOrEmpty() ? result.Data.Select(o => o.Message).ToJoin() : result.Message,
Type = Enums.OperationResponseType.Error
});
}
else
{
ThrowValidationException(result);
}
//ThrowValidationException(result);
}
}
}
public async override Task Invoke(AspectContext context, AspectDelegate next)
{
try
{
string key = string.Empty;
//自定义的缓存key不存在，再获取类名+方法名或类名+方法名+参数名的组合式key
if (!string.IsNullOrEmpty(_cacheKey))
{
key = _cacheKey;
}
else
{
key = GetKey(context.ServiceMethod, context.Parameters);
}
var returnType = GetReturnType(context);
var cache = context.ServiceProvider.GetService <ICacheHelper>();
object result = null;
if (cache.Exists(key))
{
var strResult = cache.Get(key);
result = strResult;
}
if (result != null)
{
context.ReturnValue = ResultFactory(result, returnType, context.IsAsync());
}
else
{
result = await RunAndGetReturn(context, next);
if (_expireSecond > 0)
{
cache.Set(key, result, TimeSpan.FromMinutes(_expireSecond));
}
else
{
cache.Set(key, result);
}
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
throw e;
}
}
/// <summary>
/// 执行后
/// </summary>
/// <param name="log">日志操作</param>
/// <param name="context">Aspect上下文</param>
/// <param name="methodName">方法名</param>
private async Task ExecuteAfter(ILog log, AspectContext context, string methodName)
{
if (context.ServiceMethod.ReturnType == typeof(Task) ||
context.ServiceMethod.ReturnType == typeof(void) ||
context.ServiceMethod.ReturnType == typeof(ValueTask))
{
return;
}
var returnValue = context.IsAsync() ? await context.UnwrapAsyncReturnValue() : context.ReturnValue;
var returnType = returnValue.GetType().FullName;
log.Caption($"{context.ServiceMethod.Name}方法执行后")
.Method(methodName)
.Content($"返回类型: {returnType}, 返回值: {returnValue.SafeString()}");
WriteLog(log);
}
public async override Task Invoke(AspectContext context, AspectDelegate next)
{
var cachedConfigurationProvider = context.ServiceProvider.GetService <IOptionsMonitor <FilterCachedConfiguration> >();
var configCache = context.GetCacheConfigurationByMethodName(cachedConfigurationProvider.CurrentValue);
var methodReturnType = context.ProxyMethod.ReturnType;
if (
configCache == null ||
methodReturnType == typeof(void) ||
methodReturnType == typeof(Task) ||
methodReturnType == typeof(ValueTask)
)
{
await next(context);
return;
}
if (string.IsNullOrWhiteSpace(CacheName))
{
CacheName = context.GetGenerateKeyByMethodNameAndValues();
}
ResponseCacheService = context.ServiceProvider.GetService <IResponseCacheService>();
var returnType = context.IsAsync() ? methodReturnType.GenericTypeArguments.FirstOrDefault() : methodReturnType;
var cachedValue = await ResponseCacheService.GetCachedResponseAsync(CacheName, returnType);
if (cachedValue != null)
{
context.SetReturnType(methodReturnType, cachedValue);
return;
}
await next(context);
await ResponseCacheService
.SetCacheResponseAsync(
CacheName,
await context.GetReturnValueAsync(),
TimeSpan.FromSeconds(configCache.TimeToLiveSeconds ?? TimeToLiveSeconds)
);
}
public async override Task Invoke(AspectContext context, AspectDelegate next)
{
if (!IsOpen || Seconds <= 0)
{
await next(context);
return;
}
try
{
var cacheService = context.ServiceProvider.GetService <ICacheService>();
Type returnType = context.GetReturnType();
string key = Utils.GetParamterKey(Prefix, Key, ParamterKey, context.Parameters);
var result = cacheService.Get(key, returnType);
if (result == null)
{
await next(context);
var value = await context.GetReturnValue();
if (value != null)
{
cacheService.Set(key, TimeSpan.FromSeconds(Seconds), value);
}
}
else
{
context.ReturnValue = context.ResultFactory(result, returnType, context.IsAsync());
}
}
catch (Exception ex)
{
var logger = context.ServiceProvider.GetService <ILogger <CacheMethodAttribute> >();
logger.LogError($"CacheMethod：Key：{Key}，ParamterKey：{ParamterKey} {ex.FormatMessage()}");
await next(context);
}
}
public static void SetReturnType(this AspectContext context, Type methodReturnType, object value)
{
if (context.IsAsync())
{
var returnType = methodReturnType.GenericTypeArguments.FirstOrDefault();
if (methodReturnType == typeof(Task <>).MakeGenericType(returnType))
{
context.ReturnValue = typeof(Task).GetMethod(nameof(Task.FromResult)).MakeGenericMethod(returnType).Invoke(null, new[] { value });
}
else if (methodReturnType == typeof(ValueTask <>).MakeGenericType(returnType))
{
context.ReturnValue = Activator.CreateInstance(typeof(ValueTask <>).MakeGenericType(returnType), value);
}
}
else
{
context.ReturnValue = value;
}
}
/// <summary>
/// Processes the put async.
/// </summary>
/// <returns>The put async.</returns>
/// <param name="context">Context.</param>
private async Task ProcessPutAsync(AspectContext context)
{
if (context.ServiceMethod.GetCustomAttributes(true).FirstOrDefault(x => x.GetType() == typeof(EasyCachingPutAttribute)) is EasyCachingPutAttribute attribute && context.ReturnValue != null)
{
var cacheKey = KeyGenerator.GetCacheKey(context.ServiceMethod, context.Parameters, attribute.CacheKeyPrefix);
if (context.IsAsync())
{
//get the result
var returnValue = await context.UnwrapAsyncReturnValue();
await CacheProvider.SetAsync(cacheKey, returnValue, TimeSpan.FromSeconds(attribute.Expiration));
}
else
{
await CacheProvider.SetAsync(cacheKey, context.ReturnValue, TimeSpan.FromSeconds(attribute.Expiration));
}
}
}
/// <summary>
///
/// </summary>
/// <param name="context"></param>
/// <param name="next"></param>
/// <returns></returns>
public override async Task Invoke(AspectContext context, AspectDelegate next)
{
if (context.ServiceMethod.AttributeExists <DisableUnitOfWorkAttribute>() || context.ImplementationMethod.AttributeExists <DisableUnitOfWorkAttribute>())
{
await next(context);
return;
}
using (var uow = _unitOfWorkManager.Begin(CreateOptions(context)))
{
await next(context);
if (context.IsAsync())
{
await uow.CompleteAsync();
}
else
{
uow.Complete();
}
}
}
public async override Task Invoke(AspectContext context, AspectDelegate next)
{
if (!IsOpen)
{
await next(context);
return;
}
try
{
var cacheService = context.ServiceProvider.GetService <ICacheService>();
Type returnType = context.GetReturnType();
string key = Utils.GetParamterKey(Prefix, Key, ParamterKey, context.Parameters);
var result = cacheService.Get(key, returnType);
if (result == null)
{
await Next(context, next, cacheService, key);
}
else
{
context.ReturnValue = context.ResultFactory(result, returnType, context.IsAsync());
}
}
catch (Exception ex)
{
var logger = context.ServiceProvider.GetService <ILogger <CacheTiggerAttribute> >();
logger.LogError($"CacheInterceptor：Key：{Key}，ParamterKey：{ParamterKey} {ex.FormatMessage()}");
await next(context);
}
}
/// <summary>
/// 执行
/// </summary>
public override async Task Invoke(AspectContext context, AspectDelegate next)
{
List <string> appendKeyArray = null;
if (string.IsNullOrWhiteSpace(Key))
{
Key =
$"{context.ServiceMethod.DeclaringType}.{context.ImplementationMethod.Name}:{context.ServiceMethod.ToString()}";
}
else
{
if (!AppendKeyParameters.TryGetValue(context.ImplementationMethod, out appendKeyArray))
{
if (Key.IndexOf("{", StringComparison.Ordinal) > -1)
{
appendKeyArray = new List <string>();
var matchs = Regex.Matches(Key, @"\{\w*\:?\w*\}", RegexOptions.None);
foreach (Match match in matchs)
{
if (match.Success)
{
appendKeyArray.Add(match.Value.TrimStart('{').TrimEnd('}'));
}
}
}
AppendKeyParameters.TryAdd(context.ImplementationMethod, appendKeyArray);
}
}
var currentCacheKey = Key;
if (appendKeyArray != null && appendKeyArray.Count > 0)
{
// 获取方法的参数
var pars = context.ProxyMethod.GetParameters();
// 设置参数名和值，加入字典
var dicValue = new Dictionary <string, object>();
for (var i = 0; i < pars.Length; i++)
{
dicValue.Add(pars[i].Name, context.Parameters[i]);
}
foreach (var key in appendKeyArray)
{
if (key.Contains(":"))
{
var arr = key.Split(':');
var keyFirst = arr[0];
var keySecond = arr[1];
if (!dicValue.TryGetValue(keyFirst, out var value))
{
throw new Warning(
$"Cache {context.ServiceMethod.DeclaringType}.{context.ImplementationMethod.Name} 不包含参数 {keyFirst}");
}
var ob = Internal.Helper.ToDictionary(value);
if (!ob.TryGetValue(keySecond, out object tokenValue))
{
throw new Warning(
$"Cache {context.ServiceMethod.DeclaringType}.{context.ImplementationMethod.Name} {keyFirst} 不包含参数 {keySecond}");
}
currentCacheKey = currentCacheKey.Replace("{" + key + "}", tokenValue.ToString());
}
else
{
if (!dicValue.TryGetValue(key, out var value))
{
throw new Warning(
$"Cache {context.ServiceMethod.DeclaringType}.{context.ImplementationMethod.Name} 不包含参数 {key}");
}
currentCacheKey = currentCacheKey.Replace("{" + key + "}", value.ToString());
}
}
}
// 返回值类型
var returnType = context.IsAsync()
? context.ServiceMethod.ReturnType.GetGenericArguments().First()
: context.ServiceMethod.ReturnType;
// 从缓存取值
var cacheValue = await Cache.GetAsync(currentCacheKey, returnType);
if (cacheValue != null)
{
context.ReturnValue = context.IsAsync()
? TaskResultMethod.MakeGenericMethod(returnType).Invoke(null, new object[] { cacheValue })
: cacheValue;
return;
}
using (await _lock.LockAsync())
{
cacheValue = await Cache.GetAsync(currentCacheKey, returnType);
if (cacheValue != null)
{
context.ReturnValue = context.IsAsync()
? TaskResultMethod.MakeGenericMethod(returnType).Invoke(null, new object[] { cacheValue })
: cacheValue;
}
else
{
await next(context);
dynamic returnValue =
context.IsAsync() ? await context.UnwrapAsyncReturnValue() : context.ReturnValue;
Cache.TryAdd(currentCacheKey, returnValue, Expiration);
}
}
}
public async override Task Invoke(AspectContext context, AspectDelegate next)
{
CacheAbleAttribute attribute = context.GetAttribute <CacheAbleAttribute>();
if (attribute == null)
{
await context.Invoke(next);
return;
}
try
{
Database = RedisClient.GetDatabase();
string cacheKey = KeyGenerator.GetCacheKey(context.ServiceMethod, context.Parameters, attribute.CacheKeyPrefix);
string cacheValue = await GetCacheAsync(cacheKey);
Type returnType = context.GetReturnType();
if (string.IsNullOrWhiteSpace(cacheValue))
{
if (attribute.OnceUpdate)
{
string lockKey = $"Lock_{cacheKey}";
RedisValue token = Environment.MachineName;
if (await Database.LockTakeAsync(lockKey, token, TimeSpan.FromSeconds(10)))
{
try
{
var result = await RunAndGetReturn(context, next);
await SetCache(cacheKey, result, attribute.Expiration);
return;
}
finally
{
await Database.LockReleaseAsync(lockKey, token);
}
}
else
{
for (int i = 0; i < 5; i++)
{
Thread.Sleep(i * 100 + 500);
cacheValue = await GetCacheAsync(cacheKey);
if (!string.IsNullOrWhiteSpace(cacheValue))
{
break;
}
}
if (string.IsNullOrWhiteSpace(cacheValue))
{
var defaultValue = CreateDefaultResult(returnType);
context.ReturnValue = ResultFactory(defaultValue, returnType, context.IsAsync());
return;
}
}
}
else
{
var result = await RunAndGetReturn(context, next);
await SetCache(cacheKey, result, attribute.Expiration);
return;
}
}
var objValue = await DeserializeCache(cacheKey, cacheValue, returnType);
//缓存值不可用
if (objValue == null)
{
await context.Invoke(next);
return;
}
context.ReturnValue = ResultFactory(objValue, returnType, context.IsAsync());
}
catch (Exception)
{
if (context.ReturnValue == null)
{
await context.Invoke(next);
}
}
}
/// <summary>
/// 获取被拦截方法返回值类型
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
private Type GetReturnType(AspectContext context)
{
return(context.IsAsync()
? context.ServiceMethod.ReturnType.GetGenericArguments().First()
: context.ServiceMethod.ReturnType);
}
private object buildResult(AspectContext context)
{
return(context.IsAsync() ? context.UnwrapAsyncReturnValue().Result : context.ReturnValue);
}
public static Type GetReturnType(this AspectContext context)
{
return(context.IsAsync()
? context.ServiceMethod.ReturnType.GetGenericArguments().First()
: context.ServiceMethod.ReturnType);
}
public async static Task <object> GetReturnValueAsync(this AspectContext context) => context.IsAsync() ? await context.UnwrapAsyncReturnValue() : context.ReturnValue;
/// <summary>
///
/// </summary>
/// <param name="context"></param>
/// <param name="next"></param>
/// <returns></returns>
private async Task ProcessRedisCaching(AspectContext context, AspectDelegate next)
{
var attribute = GetMethodAttributes(context.ServiceMethod).FirstOrDefault(x => x.GetType() == typeof(RedisCachingAttribute)) as RedisCachingAttribute;
if (attribute == null)
{
await context.Invoke(next);
}
var returnType = context.IsAsync()
? context.ServiceMethod.ReturnType.GetGenericArguments().First()
: context.ServiceMethod.ReturnType;
var cacheKey = "";
cacheKey = KeyGenerator.GetCacheKey(context.ServiceMethod, context.Parameters, attribute.CacheKeyPrefix);
if (context.Parameters != null && context.Parameters.Length > 0)
{
var md5key = Encrypt.Md5By32(Json.ToJson(context.Parameters));
cacheKey = cacheKey + ":" + md5key;
}
else
{
var md5key = Encrypt.Md5By32(Json.ToJson(context.ServiceMethod.Name));
cacheKey = cacheKey + ":" + md5key;
}
object cacheValue = null;
var isAvailable = true;
try
{
if (attribute.IsHybridProvider)
{
cacheValue = await HybridCachingProvider.GetAsync(cacheKey, returnType);
}
else
{
var _cacheProvider = CacheProviderFactory.GetCachingProvider(attribute.CacheProviderName ?? Options.Value.CacheProviderName);
//cacheValue = await _cacheProvider.GetAsync(cacheKey, returnType);
var val = await _cacheProvider.GetAsync <string>(cacheKey);
if (val.HasValue)
{
cacheValue = JsonConvert.DeserializeObject(val.Value, returnType);
}
}
}
catch (Exception ex)
{
if (!attribute.IsHighAvailability)
{
throw ex;
}
else
{
isAvailable = false;
}
}
if (cacheValue != null)
{
if (context.IsAsync())
{
//#1
//dynamic member = context.ServiceMethod.ReturnType.GetMember("Result")[0];
//dynamic temp = System.Convert.ChangeType(cacheValue.Value, member.PropertyType);
//context.ReturnValue = System.Convert.ChangeType(Task.FromResult(temp), context.ServiceMethod.ReturnType);
//#2
context.ReturnValue =
TypeofTaskResultMethod.GetOrAdd(returnType, t => typeof(Task).GetMethods().First(p => p.Name == "FromResult" && p.ContainsGenericParameters).MakeGenericMethod(returnType)).Invoke(null, new object[] { cacheValue });
}
else
{
//context.ReturnValue = System.Convert.ChangeType(cacheValue.Value, context.ServiceMethod.ReturnType);
context.ReturnValue = cacheValue;
}
return;
}
// Invoke the method if we don't have a cache hit
await next(context);
try
{
if (isAvailable)
{
// get the result
var returnValue = context.IsAsync()
? await context.UnwrapAsyncReturnValue()
: context.ReturnValue;
// should we do something when method return null?
// 1. cached a null value for a short time
// 2. do nothing
if (returnValue != null && cacheKey.IsNotWhiteSpaceEmpty())
{
if (attribute.IsHybridProvider)
{
await HybridCachingProvider.SetAsync(cacheKey, returnValue, TimeSpan.FromSeconds(attribute.Expiration));
}
else
{
var _cacheProvider = CacheProviderFactory.GetCachingProvider(attribute.CacheProviderName ?? Options.Value.CacheProviderName);
//var f = Newtonsoft.Json.JsonConvert.SerializeObject(returnValue);
await _cacheProvider.SetAsync(cacheKey, JsonConvert.SerializeObject(returnValue, new JsonSerializerSettings()
{
NullValueHandling = NullValueHandling.Ignore, DateTimeZoneHandling = DateTimeZoneHandling.Local
}), TimeSpan.FromSeconds(attribute.Expiration));
}
}
}
}
catch (Exception ex)
{
ex.Submit();
}
}
/// <summary>
/// Proceeds the able async.
/// </summary>
/// <returns>The able async.</returns>
/// <param name="context">Context.</param>
/// <param name="next">Next.</param>
private async Task ProceedAbleAsync(AspectContext context, AspectDelegate next)
{
if (GetMethodAttributes(context.ServiceMethod).FirstOrDefault(x => typeof(EasyCachingAbleAttribute).IsAssignableFrom(x.GetType())) is EasyCachingAbleAttribute attribute)
{
var returnType = context.IsAsync()
? context.ServiceMethod.ReturnType.GetGenericArguments().First()
: context.ServiceMethod.ReturnType;
var cacheKey = KeyGenerator.GetCacheKey(context.ServiceMethod, context.Parameters, attribute.CacheKeyPrefix);
object cacheValue = null;
var isAvailable = true;
try
{
if (attribute.IsHybridProvider)
{
cacheValue = await HybridCachingProvider.GetAsync(cacheKey, returnType);
}
else
{
var _cacheProvider = CacheProviderFactory.GetCachingProvider(attribute.CacheProviderName ?? Options.Value.CacheProviderName);
cacheValue = await _cacheProvider.GetAsync(cacheKey, returnType);
}
}
catch (Exception ex)
{
if (!attribute.IsHighAvailability)
{
throw;
}
else
{
isAvailable = false;
Logger?.LogError(new EventId(), ex, $"Cache provider get error.");
}
}
if (cacheValue != null)
{
if (context.IsAsync())
{
//#1
//dynamic member = context.ServiceMethod.ReturnType.GetMember("Result")[0];
//dynamic temp = System.Convert.ChangeType(cacheValue.Value, member.PropertyType);
//context.ReturnValue = System.Convert.ChangeType(Task.FromResult(temp), context.ServiceMethod.ReturnType);
//#2
context.ReturnValue =
TypeofTaskResultMethod.GetOrAdd(returnType, t => typeof(Task).GetMethods().First(p => p.Name == "FromResult" && p.ContainsGenericParameters).MakeGenericMethod(returnType)).Invoke(null, new object[] { cacheValue });
}
else
{
//context.ReturnValue = System.Convert.ChangeType(cacheValue.Value, context.ServiceMethod.ReturnType);
context.ReturnValue = cacheValue;
}
}
else
{
// Invoke the method if we don't have a cache hit
await next(context);
if (isAvailable)
{
// get the result
var returnValue = context.IsAsync()
? await context.UnwrapAsyncReturnValue()
: context.ReturnValue;
// should we do something when method return null?
// 1. cached a null value for a short time
// 2. do nothing
if (returnValue != null)
{
if (attribute.IsHybridProvider)
{
await HybridCachingProvider.SetAsync(cacheKey, returnValue, TimeSpan.FromSeconds(attribute.Expiration));
}
else
{
var _cacheProvider = CacheProviderFactory.GetCachingProvider(attribute.CacheProviderName ?? Options.Value.CacheProviderName);
await _cacheProvider.SetAsync(cacheKey, returnValue, TimeSpan.FromSeconds(attribute.Expiration));
}
}
}
}
}
else
{
// Invoke the method if we don't have EasyCachingAbleAttribute
await next(context);
}
}
public static async Task <object> GetReturnValue(this AspectContext context)
{
return(context.IsAsync() ? await context.UnwrapAsyncReturnValue() : context.ReturnValue);
}
