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kennethreitz
0eb9f27755
- Inline Depends(...) can now nest inside a provider (sub-dependency chains), matching FastAPI. The resolver checked a provider's parameter annotations but not its _Depends defaults, so a provider with an inline Depends param raised DependencyResolutionError; only named @api.dependency() providers could chain. Both resolve() and resolve_provider() now resolve inline Depends defaults recursively (cycle detection via the existing resolution stack still applies). - _depends_params ran uncached inspect.signature on every request; it now uses a WeakKeyDictionary keyed on __func__, matching the sibling caches. - _body_injections recomputed the model-parameter plan and an uncached inspect.signature on every write request. The per-endpoint signature/hint work is now memoized (_body_model_candidates); only the cheap per-request path/dependency/auth filtering runs per call. Behavior is unchanged. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
48 lines
1.2 KiB
Python
48 lines
1.2 KiB
Python
"""Inline Depends(...) can now nest inside a provider (sub-dependency chains),
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matching the FastAPI pattern. Previously only named @api.dependency() providers
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could chain; a provider with an inline Depends default raised
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DependencyResolutionError."""
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import responder
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from responder import Depends
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def _api():
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return responder.API(allowed_hosts=[";"], session_https_only=False)
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def test_inline_depends_nests_inside_provider():
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api = _api()
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def get_db():
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return "db-conn"
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def get_user(db=Depends(get_db)):
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return f"user@{db}"
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@api.route("/me")
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def me(req, resp, *, user=Depends(get_user)):
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resp.text = user
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assert api.requests.get("/me").text == "user@db-conn"
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def test_inline_depends_deeper_chain_and_request_access():
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api = _api()
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def get_prefix():
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return "id"
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def get_token(req, prefix=Depends(get_prefix)):
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return f"{prefix}:{req.headers.get('X-Token', 'anon')}"
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def get_principal(token=Depends(get_token)):
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return {"token": token}
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@api.route("/who")
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def who(req, resp, *, principal=Depends(get_principal)):
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resp.media = principal
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r = api.requests.get("/who", headers={"X-Token": "abc"})
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assert r.json() == {"token": "id:abc"}
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