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feat(typert): propagate Remote cancellation

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imccyu
2026-08-06 18:13:15 +08:00
parent 9b63d72c94
commit 22bec5e63f
28 changed files with 280 additions and 66 deletions
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packages/host/api-gateway/README.md
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@@ -12,11 +12,13 @@ Strict mode reads generated invocation descriptors from `ctx.typert.local`. Look
The Host entry registers a trusted-host interceptor on Connection's shared `/api` FetchHandler. Connection passes this composite handler through its HTTP bridge; the handler dispatches claimed endpoints to Gateway and unclaimed endpoints to API Proxy. Direct `invoke()` calls preserve business errors; `TypertGatewayError` distinguishes failures owned by dispatch, binding, providers, lookup, Context, arguments, and codecs.
A cancellation-aware Remote method declares `signal: AbortSignal` as its final Host parameter. The signal is descriptor metadata rather than a wire argument: Connection supplies it to the Gateway, and the Gateway injects it after decoded business parameters. SRC recognizes the reserved final name, while strict generation additionally requires the global `AbortSignal` type.
## Client service: `ClientApi` (ctx key: `api`)
`ctx.api.mount()` validates and registers a generated Host-for-Client contribution, then installs concrete direct and scoped methods for the calling Cordis fiber. Duplicate endpoints, namespace collisions, and descriptors without strict generated codecs fail before methods become callable.
Each call validates positional inputs, constructs the descriptor's exact named `args`, and sends it through `ctx.connection.rpc.call('/api', endpoint, ...)`. The returned value is validated before reaching application code. Withdrawing a contribution removes its descriptors and methods together, aborts in-flight calls, and makes retained method handles reject.
Each call validates positional inputs, constructs the descriptor's exact named `args`, and sends it through `ctx.connection.rpc.call('/api', endpoint, ...)`. Generated cancellation-aware methods accept a final optional `AbortSignal`; the Client combines it with the contribution mount lifetime before calling Connection. The returned value is validated before reaching application code. Withdrawing a contribution removes its descriptors and methods together, aborts in-flight calls, and makes retained method handles reject.
Generated declaration merges provide the TypeScript API. The Client entry contains no Host Service or Host Cordis interface merge, and method lookup and invocation use ordinary objects and functions rather than a JavaScript Proxy.