public override void OnEntry(MethodExecutionArgs args)
{
for (int i = 0; i < args.Arguments.Count; i++)
{
if (args.Arguments[i] is int) args.Arguments[i] = -1;
else if (args.Arguments[i] is string) args.Arguments[i] = "I changed your value";
}
}
public BoundaryAspectGenerator(object instance, DynamicMetaObject metaObj, IEnumerable<OnMethodBoundaryAspect> aspects,
MethodInfo method, IEnumerable<DynamicMetaObject> args, IEnumerable<Type> argsTypes)
{
_rule = metaObj.Restrictions;
var methExecArgs = new MethodExecutionArgs(instance, method, new Arguments(args.Select(x => x.Value).ToArray()));
_aspectCalls = new AspectCalls(metaObj.Expression, aspects, args, methExecArgs, argsTypes.Any(t => t.IsByRef));
}
/// <summary>
/// Method executed after the body of method to which this aspect is applied,
/// but only when the method successfully returns.
/// </summary>
/// <param name="args">Method arguments including return value and all necessary info.</param>
public virtual void OnSuccess(MethodExecutionArgs args)
{
}
/// <summary>
/// Method executed after the body of method to which this aspect is applied
/// (this method is invoked from the finally block, it's mean that this method will be invoked in any way).
/// This is a good place where to log the return value, inform other applications that the method has finished the execution.
/// </summary>
/// <param name="args">Method arguments including return value and all necessary info.</param>
public virtual void OnExit(MethodExecutionArgs args)
{
}
/// <summary>
/// When an exception is happened then this method will be called.
/// This is a perfect place to log the error messages in an generic way and do something useful with that information.
/// </summary>
/// <param name="args">Method arguments including return value and all necessary info.</param>
public virtual void OnException(MethodExecutionArgs args)
{
}
/// <summary>
/// Method executed before the body of method to which this aspect is applied.
/// OnEntry method is a perfect place where to implement the logic such as input parameters logging, caching, authentication/authorization.
/// </summary>
/// <param name="args">Method arguments including return value and all necessary info.</param>
public virtual void OnEntry(MethodExecutionArgs args)
{
}
public override void OnEntry(MethodExecutionArgs args)
{
var entity = (TestEntity)args.Arguments[0];
entity.Name = "ChangedName";
entity.Number = 999;
}
public AspectCalls(Expression origMethod, IEnumerable<OnMethodBoundaryAspect> aspects, IEnumerable<DynamicMetaObject> args, MethodExecutionArgs methExecArgs, bool isByRefArgs)
: this()
{
_origMethod = origMethod;
_args = args;
MethodExecutionArgs = methExecArgs;
_isByRefArgs = isByRefArgs;
ArgsExpression = Expression.Constant(methExecArgs);
RetMethodValue = Expression.Parameter(typeof(object));
foreach (var aspect in aspects)
{
EntryCalls.Add(GenerateCall("OnEntry", aspect));
SuccessCalls.Add(GenerateCall("OnSuccess", aspect));
ExceptionCalls.Add(GenerateCall("OnException", aspect));
ExitCalls.Add(GenerateCall("OnExit", aspect));
}
OriginalCall = GenerateOriginalCall();
}
