Auto-detect metadata-only CLI mode to suppress DB/transport init#2485
Merged
jeremydmiller merged 1 commit intomainfrom Apr 9, 2026
Merged
Auto-detect metadata-only CLI mode to suppress DB/transport init#2485jeremydmiller merged 1 commit intomainfrom
jeremydmiller merged 1 commit intomainfrom
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- Wolverine now detects codegen commands (via DynamicCodeBuilder.WithinCodegenCommand)
and OpenAPI generation tools (via ASPNETCORE_HOSTINGSTARTUPASSEMBLIES containing
"GetDocument") and automatically applies lightweight startup mode, suppressing
persistence and transport initialization.
- Replaced the Environment.CommandLine.Contains("codegen") code smell in
WolverineHttpEndpointRouteBuilderExtensions with DynamicCodeBuilder.WithinCodegenCommand.
- Added smoke tests verifying codegen preview and host startup work without DB.
- Added documentation in command-line.md explaining that CLI commands do not
require external connectivity.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This was referenced Apr 11, 2026
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Summary
Fixes #2471.
WolverineRuntime.StartAsyncnow callsapplyMetadataOnlyModeIfDetected()before any persistence or transport initialization. WhenDynamicCodeBuilder.WithinCodegenCommandis true (set by JasperFx when thecodegencommand is in the command-line args or when running with--start), Wolverine automatically applies lightweight startup settings: external transports are stubbed, durability agents are disabled, and the durability mode is set toMediatorOnly.ASPNETCORE_HOSTINGSTARTUPASSEMBLIESfor"GetDocument", which is set byMicrosoft.Extensions.ApiDescription.Server(GetDocument.Insider) when generating OpenAPI docs. This removes the need for users to addGetCommandLineArgsor assembly-name workarounds.Environment.CommandLine.Contains("codegen", StringComparison.OrdinalIgnoreCase)inWolverineHttpEndpointRouteBuilderExtensionswithDynamicCodeBuilder.WithinCodegenCommand.codegen previewbuilds without starting the host, one verifyingStartAsyncapplies lightweight mode whenWithinCodegenCommandis true.command-line.mdupdated with a section explaining that CLI diagnostic commands do not require external connectivity.Test plan
Bug_2471_codegen_without_connectivitytests pass (2/2)Wolverine.csprojbuilds with 0 errorsWolverine.Http.csprojbuilds with 0 errorsCoreTests.csprojbuilds with 0 errors🤖 Generated with Claude Code