/// <summary>
/// 从拦截内容获得
/// </summary>
/// <param name="invocation">拦截内容</param>
/// <returns></returns>
private static CastleContext GetContextNoCache(IInvocation invocation)
{
var method = invocation.Method;
var hostAttribute = CastleContext.GetAttributeFromMethodOrInterface <HttpHostAttribute>(method, false);
if (hostAttribute == null)
{
hostAttribute = invocation.Proxy.GetType().GetCustomAttribute <HttpHostAttribute>();
}
if (hostAttribute == null)
{
throw new HttpRequestException("未指定HttpHostAttribute");
}
var returnAttribute = CastleContext.GetAttributeFromMethodOrInterface <ApiReturnAttribute>(method, true);
if (returnAttribute == null)
{
returnAttribute = new DefaultReturnAttribute();
}
var methodFilters = method.GetCustomAttributes <ApiActionFilterAttribute>(true);
var interfaceFilters = method.DeclaringType.GetCustomAttributes <ApiActionFilterAttribute>(true);
var filterAttributes = methodFilters.Concat(interfaceFilters).Distinct(new ApiActionFilterAttributeComparer()).ToArray();
return(new CastleContext
{
HostAttribute = hostAttribute,
ApiReturnAttribute = returnAttribute,
ApiActionFilterAttributes = filterAttributes,
ApiActionDescriptor = CastleContext.GetActionDescriptor(invocation)
});
}
/// <summary>
/// 生成ApiParameterDescriptor
/// </summary>
/// <param name="parameter">参数信息</param>
/// <param name="index">参数索引</param>
/// <returns></returns>
private static ApiParameterDescriptor GetParameterDescriptor(ParameterInfo parameter, int index)
{
var parameterDescriptor = new ApiParameterDescriptor
{
Name = parameter.Name,
Index = index,
ParameterType = parameter.ParameterType,
IsSimpleType = CastleContext.IsSimple(parameter.ParameterType),
Attributes = parameter.GetCustomAttributes <ApiParameterAttribute>(true).ToArray()
};
if (typeof(HttpContent).IsAssignableFrom(parameter.ParameterType))
{
parameterDescriptor.Attributes = new[] { new HttpContentAttribute() };
}
else if (parameterDescriptor.Attributes.Length == 0)
{
parameterDescriptor.Attributes = new[] { new PathQueryAttribute() };
}
return(parameterDescriptor);
}
/// <summary>
/// 方法拦截
/// </summary>
/// <param name="invocation">拦截内容</param>
void IInterceptor.Intercept(IInvocation invocation)
{
var context = CastleContext.From(invocation);
var actionContext = new ApiActionContext
{
HttpApiClient = this,
RequestMessage = new HttpRequestMessage(),
HostAttribute = context.HostAttribute,
ApiReturnAttribute = context.ApiReturnAttribute,
ApiActionFilterAttributes = context.ApiActionFilterAttributes,
ApiActionDescriptor = context.ApiActionDescriptor.Clone() as ApiActionDescriptor
};
var parameters = actionContext.ApiActionDescriptor.Parameters;
for (var i = 0; i < parameters.Length; i++)
{
parameters[i].Value = invocation.Arguments[i];
}
var apiAction = context.ApiActionDescriptor;
invocation.ReturnValue = apiAction.Execute(actionContext);
}