feat(llm): interrogate a draft provider endpoint for its models

Once a pi-ai route became a declaration rather than a catalog lookup,
adding an OpenAI-compatible gateway meant knowing its model ids up
front. Most such endpoints publish that list at `GET /models`, but no
seam operation could ask: every one is keyed by a registered provider
route, and the provider being added has no route, no stored profile,
and no stored credential — the endpoint and key are values in a form.

Interrogation is therefore keyed by settings namespace, which a
configuration surface already holds from the configurable-provider
directory. `registerModelDiscovery` offers it per namespace,
`discoverModels` asks, and the request carries the draft itself. The
reply is candidates, not a catalog: every field but the id is optional
because most listings disclose nothing else, and adopting one is a
settings write like any other. Nothing here reads or writes settings or
credentials, so `settings.yaml` still decides what a route serves.

`llm.discoverModels` carries the same draft over the wire. Its apiKey is
the third and last payload a secret may ride, and it is never stored,
logged, or echoed; every refusal folds into `model-discovery-failed`,
naming the endpoint asked but never the credential offered.

The pi-ai side is a plain GET for OpenAI-compatible protocols only —
their listing shape is the one gateways, self-hosted servers, and the
official endpoints agree on. Others say so, sending the user to
hand-entry rather than reporting a guessed shape as an empty provider.
The reply is read under a four-megabyte ceiling held on the bytes
actually received, because the endpoint is a URL the user typed.
This commit is contained in:
Yichen Jiang
2026-08-04 10:14:46 +08:00
parent 9948a37cbc
commit ecee93ec26
34 changed files with 985 additions and 18 deletions

View File

@@ -588,7 +588,7 @@ The provider topology changed: an adapter registered or unregistered routes, or
'llm/adapters-updated'(): void
```
Source: [`packages/llm/llm/src/index.ts:71`](../../packages/llm/llm/src/index.ts)
Source: [`packages/llm/llm/src/index.ts:73`](../../packages/llm/llm/src/index.ts)
### `llm/stream` — waterfall
@@ -612,7 +612,7 @@ Waterfall around every streaming model call (retry, replay, routing). Bound to t
Types: [GenerateOptions](../core-data-structures/core.md) · [LlmService](../core-data-structures/llm-streaming.md) · [StreamChunk](../core-data-structures/llm-streaming.md)
Source: [`packages/llm/llm/src/index.ts:60`](../../packages/llm/llm/src/index.ts)
Source: [`packages/llm/llm/src/index.ts:62`](../../packages/llm/llm/src/index.ts)
## `session/*`