/// <summary>
/// 处理请求上下文
/// </summary>
/// <returns></returns>
private static async Task HandleRequestAsync(ApiRequestContext context)
{
// 参数验证
var validateProperty = context.HttpContext.HttpApiOptions.UseParameterPropertyValidate;
foreach (var parameter in context.ApiAction.Parameters)
{
var parameterValue = context.Arguments[parameter.Index];
DataValidator.ValidateParameter(parameter, parameterValue, validateProperty);
}
// action特性请求前执行
foreach (var attr in context.ApiAction.Attributes)
{
await attr.OnRequestAsync(context).ConfigureAwait(false);
}
// 参数特性请求前执行
foreach (var parameter in context.ApiAction.Parameters)
{
var ctx = new ApiParameterContext(context, parameter);
foreach (var attr in parameter.Attributes)
{
await attr.OnRequestAsync(ctx).ConfigureAwait(false);
}
}
// Return特性请求前执行
foreach (var @return in context.ApiAction.Return.Attributes)
{
await @return.OnRequestAsync(context).ConfigureAwait(false);
}
// GlobalFilter请求前执行
foreach (var filter in context.HttpContext.HttpApiOptions.GlobalFilters)
{
await filter.OnRequestAsync(context).ConfigureAwait(false);
}
// Filter请求前执行
foreach (var filter in context.ApiAction.FilterAttributes)
{
await filter.OnRequestAsync(context).ConfigureAwait(false);
}
}
/// <summary>
/// 创建请求委托
/// </summary>
/// <param name="apiAction"></param>
/// <returns></returns>
private static InvokeDelegate <ApiRequestContext> BuildRequestHandler(ApiActionDescriptor apiAction)
{
var builder = new PipelineBuilder <ApiRequestContext>();
// 参数验证特性验证和参数模型属性特性验证
builder.Use(next => context =>
{
var validateProperty = context.HttpContext.Options.UseParameterPropertyValidate;
foreach (var parameter in context.ApiAction.Parameters)
{
var parameterValue = context.Arguments[parameter.Index];
DataValidator.ValidateParameter(parameter, parameterValue, validateProperty);
}
return(next(context));
});
// action特性请求前执行
foreach (var attr in apiAction.Attributes)
{
builder.Use(next => async context =>
{
await attr.OnRequestAsync(context).ConfigureAwait(false);
await next(context).ConfigureAwait(false);
});
}
// 参数特性请求前执行
foreach (var parameter in apiAction.Parameters)
{
var index = parameter.Index;
foreach (var attr in parameter.Attributes)
{
builder.Use(next => async context =>
{
var ctx = new ApiParameterContext(context, index);
await attr.OnRequestAsync(ctx).ConfigureAwait(false);
await next(context).ConfigureAwait(false);
});
}
}
// Return特性请求前执行
foreach (var @return in apiAction.Return.Attributes)
{
builder.Use(next => async context =>
{
await @return.OnRequestAsync(context).ConfigureAwait(false);
await next(context).ConfigureAwait(false);
});
}
// Filter请求前执行
foreach (var filter in apiAction.FilterAttributes)
{
builder.Use(next => async context =>
{
await filter.OnRequestAsync(context).ConfigureAwait(false);
await next(context).ConfigureAwait(false);
});
}
return(builder.Build());
}