/// <summary>
/// 执行api
/// </summary>
/// <param name="context">上下文</param>
/// <returns></returns>
public object Execute(ApiActionContext context)
{
if (ReturnTaskType.IsGenericType && ReturnTaskType.GetGenericTypeDefinition() == typeof(Task <>))
{
return(this.ExecuteAsync(context).CastResult(this.ReturnDataType));
}
else
{
return(this.ExecuteAsync(context).Result);
}
}
/// <summary>
/// 执行前
/// </summary>
/// <param name="context">上下文</param>
/// <returns></returns>
public override Task BeforeRequestAsync(ApiActionContext context)
{
if (context is HttpApiActionContext httpApiActionContext)
{
httpApiActionContext.RequestMessage.Method = this.Method;
var routes = context.RouteAttributes.Where((x, i) => string.IsNullOrEmpty(this.Path) || i < 1)
.Select(x => x.Template.Trim('/'));
httpApiActionContext.RequestMessage.RequestUri = new Uri(context.HttpApiClient.RequestHost,
string.Join("/", routes) + '/' + this.Path.Trim('/'));
}
return(Task.CompletedTask);
}
/// <summary>
/// 异步执行api
/// </summary>
/// <param name="context">上下文</param>
/// <returns></returns>
private async Task <object> ExecuteAsync(ApiActionContext context)
{
foreach (var methodAttribute in context.ApiActionDescriptor.Attributes)
{
await methodAttribute.BeforeRequestAsync(context);
}
foreach (var parameter in context.ApiActionDescriptor.Parameters)
{
foreach (var parameterAttribute in parameter.Attributes)
{
await parameterAttribute.BeforeRequestAsync(context, parameter);
}
}
foreach (var filter in context.ApiActionFilterAttributes)
{
await filter.OnBeginRequestAsync(context);
}
await context.HttpApiClient.SendAsync(context);
foreach (var filter in context.ApiActionFilterAttributes)
{
await filter.OnEndRequestAsync(context);
}
if (context.ApiReturnAttribute != null)
{
return(await context.ApiReturnAttribute.GetTaskResult(context));
}
foreach (var attr in AppDomain.CurrentDomain.GetExcutingAssembiles().SelectMany(x => x.GetTypes())
.Where(x => x.BaseType == typeof(ApiReturnAttribute)).Select(x => Activator.CreateInstance(x) as ApiReturnAttribute))
{
if (attr == null)
{
continue;
}
var result = await attr.GetTaskResult(context);
if (result != null)
{
return(result);
}
}
var message = $"不支持的类型{context.ApiActionDescriptor.ReturnDataType}的解析";
throw new NotSupportedException(message);
}
/// <summary>
/// 异步执行api
/// </summary>
/// <param name="context">上下文</param>
/// <returns></returns>
private async Task <object> ExecuteAsync(ApiActionContext context)
{
foreach (var methodAttribute in context.ApiActionDescriptor.Attributes)
{
await methodAttribute.BeforeRequestAsync(context);
}
foreach (var parameter in context.ApiActionDescriptor.Parameters)
{
foreach (var parameterAttribute in parameter.Attributes)
{
await parameterAttribute.BeforeRequestAsync(context, parameter);
}
}
foreach (var filter in context.ApiActionFilterAttributes)
{
await filter.OnBeginRequestAsync(context);
}
await context.HttpApiClient.SendAsync(context);
foreach (var filter in context.ApiActionFilterAttributes)
{
await filter.OnEndRequestAsync(context);
}
if (context.ApiReturnAttribute != null)
{
return(await context.ApiReturnAttribute.GetTaskResult(context));
}
foreach (var attr in ApiReturnAttributes)
{
if (attr == null)
{
continue;
}
var result = await attr.GetTaskResult(context);
if (result != null)
{
return(result);
}
}
var message = $"不支持的类型{context.ApiActionDescriptor.ReturnDataType}的解析";
throw new NotSupportedException(message);
}
/// <summary> /// 获取异步结果 /// </summary> /// <param name="context">上下文</param> /// <returns></returns> public abstract Task <object> GetTaskResult(ApiActionContext context);
/// <summary>
/// 请求完成之后
/// </summary>
/// <param name="context">上下文</param>
/// <returns></returns>
public virtual Task OnEndRequestAsync(ApiActionContext context)
{
return(Task.CompletedTask);
}
/// <summary> /// 执行前 /// </summary> /// <param name="context">上下文</param> /// <returns></returns> public abstract Task BeforeRequestAsync(ApiActionContext context);
/// <summary> /// http请求之前 /// </summary> /// <param name="context">上下文</param> /// <param name="parameter">特性关联的参数</param> /// <returns></returns> public abstract Task BeforeRequestAsync(ApiActionContext context, ApiParameterDescriptor parameter);
