Skip to content

Improve error messages for implicit and explicit FromBody attribute in Minimal API #35086 #35188

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 12 commits into from
Aug 17, 2021
Merged

Improve error messages for implicit and explicit FromBody attribute in Minimal API #35086 #35188

Changes from all commits
Commits
Show all changes
12 commits
Select commit Hold shift + click to select a range
752ff7d
Improve error messages for implicit and explicit FromBody attribute i…
rafikiassumani-msft Aug 9, 2021
ecdb0fb
Add error message for mapget when user forget to register service
rafikiassumani-msft Aug 9, 2021
18f174c
resolve merge conflicts
rafikiassumani-msft Aug 9, 2021
47a1e90
add suggested changes
rafikiassumani-msft Aug 9, 2021
f834444
replace null with typeof(Tvalue)
rafikiassumani-msft Aug 9, 2021
45eeb28
multiple frombody
rafikiassumani-msft Aug 16, 2021
72b059c
merge conflicts
rafikiassumani-msft Aug 16, 2021
98217cb
resolve more merge issues
rafikiassumani-msft Aug 16, 2021
776b041
address pr suggestions
rafikiassumani-msft Aug 17, 2021
8e3d540
address more PR comments
rafikiassumani-msft Aug 17, 2021
cdceb05
clean up
rafikiassumani-msft Aug 17, 2021
d8253c6
reset HttpRequestJsonExtensions.cs
rafikiassumani-msft Aug 17, 2021
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
66 changes: 63 additions & 3 deletions src/Http/Http.Extensions/src/RequestDelegateFactory.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@
using System.Linq.Expressions;
using System.Reflection;
using System.Security.Claims;
using System.Text;
using Microsoft.AspNetCore.Http.Features;
using Microsoft.AspNetCore.Http.Metadata;
using Microsoft.Extensions.DependencyInjection;
Expand Down Expand Up @@ -189,6 +190,13 @@ private static Expression[] CreateArguments(ParameterInfo[]? parameters, Factory
args[i] = CreateArgument(parameters[i], factoryContext);
}

if (factoryContext.HasMultipleBodyParameters)
{
var errorMessage = BuildErrorMessageForMultipleBodyParameters(factoryContext);
throw new InvalidOperationException(errorMessage);

}

return args;
}

Expand All @@ -203,6 +211,7 @@ private static Expression CreateArgument(ParameterInfo parameter, FactoryContext

if (parameterCustomAttributes.OfType<IFromRouteMetadata>().FirstOrDefault() is { } routeAttribute)
{
factoryContext.TrackedParameters.Add(parameter.Name, RequestDelegateFactoryConstants.RouteAttribue);
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Great call to add a separate class for all the constants we're introducing here.

if (factoryContext.RouteParameters is { } routeParams && !routeParams.Contains(parameter.Name, StringComparer.OrdinalIgnoreCase))
{
throw new InvalidOperationException($"{parameter.Name} is not a route paramter.");
Expand All @@ -212,18 +221,22 @@ private static Expression CreateArgument(ParameterInfo parameter, FactoryContext
}
else if (parameterCustomAttributes.OfType<IFromQueryMetadata>().FirstOrDefault() is { } queryAttribute)
{
factoryContext.TrackedParameters.Add(parameter.Name, RequestDelegateFactoryConstants.QueryAttribue);
return BindParameterFromProperty(parameter, QueryExpr, queryAttribute.Name ?? parameter.Name, factoryContext);
}
else if (parameterCustomAttributes.OfType<IFromHeaderMetadata>().FirstOrDefault() is { } headerAttribute)
{
factoryContext.TrackedParameters.Add(parameter.Name, RequestDelegateFactoryConstants.HeaderAttribue);
return BindParameterFromProperty(parameter, HeadersExpr, headerAttribute.Name ?? parameter.Name, factoryContext);
}
else if (parameterCustomAttributes.OfType<IFromBodyMetadata>().FirstOrDefault() is { } bodyAttribute)
{
factoryContext.TrackedParameters.Add(parameter.Name, RequestDelegateFactoryConstants.BodyAttribue);
return BindParameterFromBody(parameter, bodyAttribute.AllowEmpty, factoryContext);
}
else if (parameter.CustomAttributes.Any(a => typeof(IFromServiceMetadata).IsAssignableFrom(a.AttributeType)))
{
factoryContext.TrackedParameters.Add(parameter.Name, RequestDelegateFactoryConstants.ServiceAttribue);
return BindParameterFromService(parameter);
}
else if (parameter.ParameterType == typeof(HttpContext))
Expand Down Expand Up @@ -254,18 +267,22 @@ private static Expression CreateArgument(ParameterInfo parameter, FactoryContext
// when RDF.Create is manually invoked.
if (factoryContext.RouteParameters is { } routeParams)
{

if (routeParams.Contains(parameter.Name, StringComparer.OrdinalIgnoreCase))
{
// We're in the fallback case and we have a parameter and route parameter match so don't fallback
// to query string in this case
factoryContext.TrackedParameters.Add(parameter.Name, RequestDelegateFactoryConstants.RouteParameter);
return BindParameterFromProperty(parameter, RouteValuesExpr, parameter.Name, factoryContext);
}
else
{
factoryContext.TrackedParameters.Add(parameter.Name, RequestDelegateFactoryConstants.QueryStringParameter);
return BindParameterFromProperty(parameter, QueryExpr, parameter.Name, factoryContext);
}
}

factoryContext.TrackedParameters.Add(parameter.Name, RequestDelegateFactoryConstants.RouteOrQueryStringParameter);
return BindParameterFromRouteValueOrQueryString(parameter, parameter.Name, factoryContext);
}
else
Expand All @@ -274,10 +291,12 @@ private static Expression CreateArgument(ParameterInfo parameter, FactoryContext
{
if (serviceProviderIsService.IsService(parameter.ParameterType))
{
factoryContext.TrackedParameters.Add(parameter.Name, RequestDelegateFactoryConstants.ServiceParameter);
return Expression.Call(GetRequiredServiceMethod.MakeGenericMethod(parameter.ParameterType), RequestServicesExpr);
}
}

factoryContext.TrackedParameters.Add(parameter.Name, RequestDelegateFactoryConstants.BodyParameter);
return BindParameterFromBody(parameter, allowEmpty: false, factoryContext);
}
}
Expand Down Expand Up @@ -500,7 +519,6 @@ private static Expression AddResponseWritingToMethodCall(Expression methodCall,
return async (target, httpContext) =>
{
object? bodyValue = defaultBodyValue;

var feature = httpContext.Features.Get<IHttpRequestBodyDetectionFeature>();
if (feature?.CanHaveBody == true)
{
Expand All @@ -515,12 +533,12 @@ private static Expression AddResponseWritingToMethodCall(Expression methodCall,
}
catch (InvalidDataException ex)
{

Log.RequestBodyInvalidDataException(httpContext, ex);
httpContext.Response.StatusCode = 400;
return;
}
}

await invoker(target, httpContext, bodyValue);
};
}
Expand Down Expand Up @@ -725,7 +743,14 @@ private static Expression BindParameterFromBody(ParameterInfo parameter, bool al
{
if (factoryContext.JsonRequestBodyType is not null)
{
throw new InvalidOperationException("Action cannot have more than one FromBody attribute.");
factoryContext.HasMultipleBodyParameters = true;
var parameterName = parameter.Name;
if (parameterName is not null && factoryContext.TrackedParameters.ContainsKey(parameterName))
{
factoryContext.TrackedParameters.Remove(parameterName);
factoryContext.TrackedParameters.Add(parameterName, "UNKNOWN");

}
}

var nullability = NullabilityContext.Create(parameter);
Expand Down Expand Up @@ -963,6 +988,24 @@ private class FactoryContext
public bool UsingTempSourceString { get; set; }
public List<ParameterExpression> ExtraLocals { get; } = new();
public List<Expression> ParamCheckExpressions { get; } = new();

public Dictionary<string, string> TrackedParameters { get; } = new();
public bool HasMultipleBodyParameters { get; set; }
}

private static class RequestDelegateFactoryConstants
{
public const string RouteAttribue = "Route (Attribute)";
public const string QueryAttribue = "Query (Attribute)";
public const string HeaderAttribue = "Header (Attribute)";
public const string BodyAttribue = "Body (Attribute)";
public const string ServiceAttribue = "Service (Attribute)";
public const string RouteParameter = "Route (Inferred)";
public const string QueryStringParameter = "Query String (Inferred)";
public const string ServiceParameter = "Services (Inferred)";
public const string BodyParameter = "Body (Inferred)";
public const string RouteOrQueryStringParameter = "Route or Query String (Inferred)";

}

private static partial class Log
Expand Down Expand Up @@ -1032,5 +1075,22 @@ private static void SetPlaintextContentType(HttpContext httpContext)
{
httpContext.Response.ContentType ??= "text/plain; charset=utf-8";
}

private static string BuildErrorMessageForMultipleBodyParameters(FactoryContext factoryContext)
{
var errorMessage = new StringBuilder();
errorMessage.Append($"Failure to infer one or more parameters.\n");
errorMessage.Append("Below is the list of parameters that we found: \n\n");
errorMessage.Append($"{"Parameter",-20}|{"Source",-30} \n");
errorMessage.Append("---------------------------------------------------------------------------------\n");

foreach (var kv in factoryContext.TrackedParameters)
{
errorMessage.Append($"{kv.Key,-19} | {kv.Value,-15}\n");
}
errorMessage.Append("\n\n");
errorMessage.Append("Did you mean to register the \"UNKNOWN\" parameters as a Service?\n\n");
return errorMessage.ToString();
}
}
}