feat: first class plugin middleware pipeline (HTTP + gRPC) - #51
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| } | ||
| catch (Exception ex) when (ex is not InvalidOperationException) | ||
| { | ||
| throw new InvalidOperationException($"Plugin '{plugin.Id}' failed to register middleware '{entry.MiddlewareType?.Name ?? entry.Name}'.", ex); |
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| foreach (var entry in loadedPlugin.Plugin.Middlewares ?? []) | ||
| { | ||
| if (!entry.IsMiddlewareEnabled || entry.Transport != AuthKitTransport.Http) | ||
| continue; | ||
|
|
||
| logger.LogWarning( | ||
| "Plugin '{PluginId}' middleware '{MiddlewareName}' targets the HTTP transport " + | ||
| "and is skipped on the gRPC transport. Declare Transport = Grpc with an " + | ||
| "Interceptor MiddlewareType to run on gRPC; no automatic HttpContext bridge is provided.", | ||
| loadedPlugin.Plugin.Id, | ||
| entry.Name ?? entry.MiddlewareType?.FullName ?? entry.MiddlewareType?.Name ?? "<unknown>"); | ||
| } |
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| catch (Exception ex) | ||
| { | ||
| throw new InvalidOperationException($"Plugin '{plugin.Id}' failed to register middleware '{entry.MiddlewareType?.Name ?? entry.Name}'.", ex); | ||
| } |
Contributor
|
Navigate logical layers of code changes, visualize relationships, and explore their blast radius. Warning
|
| Layer / File(s) | Summary |
|---|---|
Middleware contracts and validation src/Plugins/Abstractions/Pipeline/*, src/Plugins/Abstractions/Contracts/PluginContract/*, tools/AuthKit.PluginContractValidator/*, tests/Host/MiddlewareContractRuleTests.cs, tests/Host/PluginContractValidatorTests.cs, tests/Host/AuthKit.Host.Tests.csproj |
The abstractions add transport, pipeline position, middleware declaration, and invocation contracts. The validator checks legacy and declarative HTTP and gRPC middleware types. Tests cover supported models and structural errors. |
HTTP middleware registration src/Host/Configuration/Pipeline/AppMiddlewareConfiguration.cs, src/Host/Plugins/Configuration/PluginApplicationConfiguration.cs, src/Plugins/Solutions/ExamplePlugin/*, tests/Host/PluginApplicationConfigurationTests.cs |
The host registers enabled HTTP middleware at declared positions and orders entries by order, plugin ID, and declaration index. ExamplePlugin declares HTTP middleware. Tests cover transport filtering, position validation, registration errors, and execution order. |
gRPC interceptor integration src/Host/Configuration/Grpc/GrpcConfiguration.cs, src/Host/Plugins/Configuration/PluginGrpcConfiguration.cs, src/Host/Program.cs, src/Plugins/Solutions/ExamplePlugin/ExamplePlugin.cs, src/Plugins/Solutions/ExamplePlugin/Grpc/*, tests/Host/PluginGrpcConfigurationTests.cs, tests/Host/GrpcInterceptorStreamingTests.cs |
The host registers enabled gRPC interceptor types in deterministic order and logs when HTTP entries are skipped. ExamplePlugin declares a unary interceptor. Tests cover ordering, composition, invalid types, and the four server call patterns. |
Build and Test Housekeeping
| Layer / File(s) | Summary |
|---|---|
Conditional manifest copies .gitignore, Dockerfile |
The Docker publish stage copies the DevTokens, DevTools, and ExamplePlugin manifests only when they exist. TestResults is ignored. |
Priority: ➖ Normal
Estimated code review effort: 4 (Complex) | ~45 minutes
Change: Feature
Sequence Diagram(s)
sequenceDiagram
participant AppMiddlewareConfiguration
participant PluginApplicationConfiguration
participant Endpoint
AppMiddlewareConfiguration->>PluginApplicationConfiguration: Register middleware at declared positions
PluginApplicationConfiguration->>Endpoint: Invoke next request delegate
Endpoint-->>PluginApplicationConfiguration: Return after endpoint execution
sequenceDiagram
participant GrpcConfiguration
participant PluginGrpcConfiguration
participant InterceptorChain
GrpcConfiguration->>PluginGrpcConfiguration: Register plugin interceptors
PluginGrpcConfiguration->>InterceptorChain: Add ordered interceptor types
InterceptorChain->>InterceptorChain: Invoke interceptor and continue RPC
Merge Risk: ⚪ Minimal · up to 68d94
No specific issue has been established that would prevent merging after normal checks.
🚥 Pre-merge checks | ✅ 2 | ❌ 3
❌ Failed checks (3 warnings)
| Check name | Status | Explanation | Resolution |
|---|---|---|---|
| Linked Issues check | The PR satisfies the contract, validation, HTTP pipeline, gRPC type validation, ordering, DI registration, transport warnings, and streaming objectives in [#19], [#20], and [#21]. However, [#21] requi… |
Implement the gRPC composition model that merges plugin and host interceptors by the documented semantic position and deterministic keys. Add an automated test that verifies the merged order. | |
| Out of Scope Changes check | The .gitignore change adds TestResults as an ignored path. It does not implement or support the middleware contract, validation, HTTP composition, gRPC composition, or the linked build requirement… |
Remove the .gitignore change, or link it to a separate issue. Keep the middleware and build changes that support [#19], [#20], and [#21]. |
|
| Docstring Coverage | Docstring coverage is 9.32% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 118 functions across 23 files. | Write docstrings for the functions missing them to satisfy the coverage threshold. |
✅ Passed checks (2 passed)
| Check name | Status | Explanation |
|---|---|---|
| Description Check | ✅ Passed | Check skipped - CodeRabbit’s high-level summary is enabled. |
| Title check | ✅ Passed | The title clearly and concisely summarizes the main change: adding a first-class plugin middleware pipeline for HTTP and gRPC. |
Full details: Linked Issues check
Explanation
The PR satisfies the contract, validation, HTTP pipeline, gRPC type validation, ordering, DI registration, transport warnings, and streaming objectives in [#19], [#20], and [#21]. However, [#21] requires plugin interceptors to interleave with host interceptors. PluginGrpcConfiguration.AddPluginGrpcInterceptors appends plugin types to GrpcServiceOptions.Interceptors and does not assign or merge host interceptor positions. GrpcConfiguration has no active host interceptor registration. The tests cover plugin-only ordering but do not cover host-interceptor interleaving.
Full details: Out of Scope Changes check
Explanation
The .gitignore change adds TestResults as an ignored path. It does not implement or support the middleware contract, validation, HTTP composition, gRPC composition, or the linked build requirements.
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Actionable comments posted: 4
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Inline comments:
In `@src/Host/Plugins/Configuration/PluginApplicationConfiguration.cs`:
- Around line 186-206: Update RegisterPluginMiddleware in
PluginApplicationConfiguration so HTTP-only plugin middleware is skipped for
requests using the gRPC transport. Branch middleware registration based on the
request content type while preserving the existing middleware resolution and
invocation behavior for non-gRPC requests.
In `@tools/AuthKit.PluginContractValidator/src/Rules/MiddlewareRule.cs`:
- Around line 215-222: Update IsValidConventionInvokeMethod to reject convention
Invoke or InvokeAsync signatures with RequestDelegate among the parameters after
HttpContext, while preserving the existing return-type and first-parameter
checks. Change the ConventionMiddleware fixture used by
ValidMiddlewareModels_AreAccepted to use only HttpContext so it remains valid.
- Around line 39-40: Update the legacy MiddlewareType validation in the rule
that calls ValidateMiddlewareType so it accepts only convention middleware and
rejects IAuthKitMiddleware and AuthKitMiddlewareBase models; keep declarative
middleware validation unchanged.
- Around line 50-53: Update the middleware validation flow in MiddlewareRule to
reject undefined middleware.Transport and middleware.Position enum values by
adding validation errors; skip transport-specific type validation when Transport
is undefined, while preserving existing validation for defined values.
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ℹ️ Review info
⚙️ Run configuration
Configuration used: defaults
Review profile: CHILL
Plan: Advanced
Run ID: 969b0df1-20e4-4039-bde0-e80f945c284d
📒 Files selected for processing (28)
.gitignoreDockerfilesrc/Host/Configuration/Grpc/GrpcConfiguration.cssrc/Host/Configuration/Pipeline/AppMiddlewareConfiguration.cssrc/Host/Plugins/Configuration/PluginApplicationConfiguration.cssrc/Host/Plugins/Configuration/PluginGrpcConfiguration.cssrc/Host/Program.cssrc/Plugins/Abstractions/AuthKit.Plugins.Abstractions.csprojsrc/Plugins/Abstractions/Contracts/PluginContract/AuthKitMiddlewareBase.cssrc/Plugins/Abstractions/Contracts/PluginContract/IAuthKitMiddleware.cssrc/Plugins/Abstractions/Contracts/PluginContract/IAuthKitPlugin.Middlewares.cssrc/Plugins/Abstractions/Contracts/PluginContract/IAuthKitPlugin.Pipeline.cssrc/Plugins/Abstractions/Pipeline/AuthKitTransport.cssrc/Plugins/Abstractions/Pipeline/PipelinePosition.cssrc/Plugins/Abstractions/Pipeline/PluginMiddleware.cssrc/Plugins/Abstractions/Pipeline/PluginPipelinePosition.cssrc/Plugins/Solutions/ExamplePlugin/ExamplePlugin.cssrc/Plugins/Solutions/ExamplePlugin/Grpc/ExampleLoggingInterceptor.cssrc/Plugins/Solutions/ExamplePlugin/Middleware/ExampleHeaderMiddleware.cssrc/Plugins/Solutions/ExamplePlugin/Middleware/ExampleScopedMiddleware.cstests/Host/AuthKit.Host.Tests.csprojtests/Host/GrpcInterceptorStreamingTests.cstests/Host/MiddlewareContractRuleTests.cstests/Host/PluginApplicationConfigurationTests.cstests/Host/PluginContractValidatorTests.cstests/Host/PluginGrpcConfigurationTests.cstools/AuthKit.PluginContractValidator/AuthKit.PluginContractValidator.csprojtools/AuthKit.PluginContractValidator/src/Rules/MiddlewareRule.cs
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Summary
Adds first-class structured middleware pipeline support to the AuthKit plugin contract for HTTP and gRPC transports: plugins declaratively register multiple middleware entries with an explicit transport, semantic pipeline position, and per-entry enabled flag, while the host owns deterministic composition, request-scoped activation, and structural validation. Legacy single
MiddlewareTyperegistrations keep working through a compatibility path, so existing plugins remain source compatible and load unchanged.Pipeline Contract (C1–C5, #19)
PipelinePositionwithBeforeRouting,AfterRouting,BeforeAuthentication,AfterAuthorization,BeforeEndpoints,AfterEndpointExecutionas shared semantic positions (transport-neutral intent, host-mapped per transport)PluginMiddlewarerecord carryingMiddlewareType,Position,Order,IsMiddlewareEnabled,Name,Transport— type-only declaration, no factory; the plugin declares what, the host owns activationIAuthKitPlugin.Middlewares(IReadOnlyList<PluginMiddleware>, default empty) as an additive optional memberAuthKitMiddlewareBase(convention-based,InvokeAsync(HttpContext, RequestDelegate)) andIAuthKitMiddleware(DI-aware, same signature withnextper ASP.NET Core convention)AfterAuthorizationis explicitly after authentication and authorization;AfterEndpointExecutionis post-endpoint response processing, not registration after endpointsExtended Transport Model (C7, #21)
AuthKitTransport(Httpdefault,Grpc) as the authoritative transport declaration — the host never guesses transport by reflectionGrpc.Core.Interceptors.Interceptorsubclasses composed into the native interceptor chain; no second interceptor framework, noHttpContextbridgesrc/Plugins/Abstractions/Pipeline/Host Integration
Transport = Httpentries per position in deterministic order (Order → PluginId → DeclarationIndex); disabled entries are skipped without side effectsIAuthKitMiddlewareandAuthKitMiddlewareBaseresolve per request from the request service provider (single scope, scoped services shared); convention types go throughUseMiddlewarePluginGrpcConfiguration) groupsTransport = Grpcentries by semantic position, registers them scoped, and appends them toGrpcServiceOptions.Interceptors; HTTP-only middleware is skipped on gRPC with an explicit warningExamplePluginadopts the contract: convention header middleware, DI-aware scoped middleware, disabled entry, and a gRPC logging interceptor with post-call processingDockerfiletolerates missing generated plugin manifests (gitignored artifacts) instead of failing the buildValidation (C6, #20)
MiddlewareRuleclassifies eachMiddlewareTypeinto convention /AuthKitMiddlewareBase/IAuthKitMiddleware/ gRPCInterceptormodels with model-aware diagnostics naming the plugin and typeInvoke/InvokeAsync,void-returning, multi-ctor convention, generic, and abstract types;Transport/MiddlewareTypemismatches fail explicitlyInvokeAsync(HttpContext, ...deps)intentionally allows injectable dependencies so existingDeveloperTokenMiddleware.InvokeAsync(HttpContext, IDeveloperTokenValidator)keeps passingValidation
dotnet buildcompletes with zero errors for Host, Abstractions, validator, and ExamplePluginPluginContractValidatorpasses end to end againstExamplePluginandDevTokensResult
Plugins register structured, transport-explicit middleware with deterministic host-side composition and fail-fast validation, and existing plugin implementations continue to compile, load, and behave without modification.
Closes #19
Closes #20
Closes #21
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