private string getKey(IInvocation invocation, CacheAttribute attribute)
{
if (attribute.IsKey)
{
if (attribute.IsResolve)
{
throw new NotSupportedException();
}
else
{
return attribute.Key;
}
}
else//if (attribute.IsArg)
{
if (attribute.IsResolve)
{
throw new NotSupportedException();
}
else
{
object[] args = InterceptorHelper.GetInvocationMethodArgs(invocation);
if (attribute.Arg <= args.Length)
{
return args[attribute.Arg].ToString();
}
else
{
throw new IndexOutOfRangeException();
}
}
}
}
private string getKey(IInvocation invocation, CacheAttribute attribute)
{
if (attribute.IsKey)
{
if (attribute.IsResolve)
{
throw new NotSupportedException();
}
else
{
return(attribute.Key);
}
}
else//if (attribute.IsArg)
{
if (attribute.IsResolve)
{
throw new NotSupportedException();
}
else
{
object[] args = InterceptorHelper.GetInvocationMethodArgs(invocation);
if (attribute.Arg <= args.Length)
{
return(args[attribute.Arg].ToString());
}
else
{
throw new IndexOutOfRangeException();
}
}
}
}
private IDependencyWrapper getDependency(IInvocation invocation, CacheAttribute attribute)
{
Type targetType = invocation.TargetType;
MethodInfo dependencyCallback = targetType.GetMethod(attribute.DependencyCallback);
IDependencyWrapper dependency = (IDependencyWrapper)dependencyCallback.Invoke(
null,
new object[]{
InterceptorHelper.GetInvocationTarget(invocation),
InterceptorHelper.GetInvocationMethodArgs(invocation)
}
);
return dependency;
}
public override void Intercept(IInvocation invocation)
{
CacheAttribute attribute = AttributeHelper.GetAttribute <CacheAttribute>(invocation) as CacheAttribute;
attribute.Key = getKey(invocation, attribute);
ICache cache = IocCoreFactory.Get <ICache>();
object cacheData = cache.Get(attribute.Key);
if (cacheData != null)
{
invocation.ReturnValue = cacheData;
if (LogLevel <= attribute.LogLevel)
{
StringBuilder logstr = new StringBuilder();
logstr.AppendFormat("Cache Hit! Key:\"{0}\" Caller:{1}", attribute.Key, InterceptorHelper.GetMethodInfo(invocation));
Log.Log(logstr.ToString(), attribute.LogLevel);
}
return;
}
IDependencyWrapper dependency;
if (!String.IsNullOrWhiteSpace(attribute.DependencyCallback))
{
dependency = getDependency(invocation, attribute);
}
else
{
dependency = null;
}
invocation.Proceed();
if (dependency != null)
{
object returnValue = invocation.ReturnValue;
MethodInfo onRemovedCallback = invocation.TargetType.GetMethod(attribute.OnRemovedCallback);
cache.Insert(
attribute.Key,
returnValue,
dependency.Instance,
attribute.Absolute,
attribute.Sliding,
(int)attribute.Priority,
onRemovedCallback);
if (LogLevel <= attribute.LogLevel)
{
StringBuilder logstr = new StringBuilder();
logstr.AppendFormat("Cache Insert! Key:\"{0}\" Caller:{1}", attribute.Key, InterceptorHelper.GetMethodInfo(invocation));
Log.Log(logstr.ToString(), attribute.LogLevel);
}
}
}
private IDependencyWrapper getDependency(IInvocation invocation, CacheAttribute attribute)
{
Type targetType = invocation.TargetType;
MethodInfo dependencyCallback = targetType.GetMethod(attribute.DependencyCallback);
IDependencyWrapper dependency = (IDependencyWrapper)dependencyCallback.Invoke(
null,
new object[] {
InterceptorHelper.GetInvocationTarget(invocation),
InterceptorHelper.GetInvocationMethodArgs(invocation)
}
);
return(dependency);
}