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Simplify Python hosting core (#6492)

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Remove linking, multicast, durable delivery, and host push machinery from the v1 hosting core. Keep those scenarios in a proposed follow-up ADR and update channel packages, samples, docs, tests, and workspace metadata around the smaller host/channel contract.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
Eduard van Valkenburg
2026-06-12 08:34:08 +02:00
committed by GitHub
co-authored by Copilot
parent e5a6e35843
commit 36ce0950e4
50 changed files with 1290 additions and 11651 deletions
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python/packages/hosting-invocations/tests/test_channel.py
+13 -17
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@@ -137,24 +137,22 @@ class TestInvocations:
async def hook(req: ChannelRequest, **_: Any) -> ChannelRequest:
captured.append(req)
# Force stream off even if requested.
return replace(req, stream=False)
return replace(req, input="rewritten")
agent = _FakeAgent(reply="ok")
host = AgentFrameworkHost(target=agent, channels=[InvocationsChannel(run_hook=hook)])
with TestClient(host.app) as client:
r = client.post("/invocations", json={"message": "x", "stream": True})
assert r.status_code == 200
# Even though caller asked for stream=True, hook flipped it off — so
# we get JSON back, not SSE.
assert r.headers["content-type"].startswith("application/json")
assert r.headers["content-type"].startswith("text/event-stream")
assert captured and captured[0].channel == "invocations"
assert agent.calls[0]["messages"].text == "rewritten"
def test_response_hook_can_rewrite_originating_reply(self) -> None:
contexts: list[Any] = []
seen_kwargs: list[dict[str, Any]] = []
def hook(result: HostedRunResult, **kwargs: Any) -> HostedRunResult:
contexts.append(kwargs["context"])
seen_kwargs.append(dict(kwargs))
return HostedRunResult(_FakeAgentResponse(text=f"hooked:{result.result.text}"), session=result.session)
agent = _FakeAgent(reply="pong")
@@ -165,12 +163,10 @@ class TestInvocations:
assert r.status_code == 200
assert r.json() == {"response": "hooked:pong", "session_id": None}
assert contexts
assert contexts[0].channel_name == "invocations"
assert contexts[0].originating is True
assert contexts[0].destination_identity is None
assert seen_kwargs
assert seen_kwargs[0]["channel_name"] == "invocations"
def test_stream_transform_hook_can_rewrite_chunks(self) -> None:
def test_stream_update_hook_can_rewrite_chunks(self) -> None:
agent = _FakeAgent(chunks=["foo", "bar"])
def transform(update: Any) -> Any:
@@ -178,7 +174,7 @@ class TestInvocations:
host = AgentFrameworkHost(
target=agent,
channels=[InvocationsChannel(stream_transform_hook=transform)],
channels=[InvocationsChannel(stream_update_hook=transform)],
)
with TestClient(host.app) as client:
r = client.post("/invocations", json={"message": "x", "stream": True})
@@ -188,7 +184,7 @@ class TestInvocations:
assert "data: BAR" in body
assert "data: foo" not in body
def test_stream_transform_hook_can_drop_chunks(self) -> None:
def test_stream_update_hook_can_drop_chunks(self) -> None:
agent = _FakeAgent(chunks=["keep", "drop", "keep2"])
def transform(update: Any) -> Any:
@@ -196,7 +192,7 @@ class TestInvocations:
host = AgentFrameworkHost(
target=agent,
channels=[InvocationsChannel(stream_transform_hook=transform)],
channels=[InvocationsChannel(stream_update_hook=transform)],
)
with TestClient(host.app) as client:
r = client.post("/invocations", json={"message": "x", "stream": True})
@@ -206,7 +202,7 @@ class TestInvocations:
assert "data: keep2" in body
assert "data: drop" not in body
def test_stream_transform_hook_supports_async(self) -> None:
def test_stream_update_hook_supports_async(self) -> None:
agent = _FakeAgent(chunks=["aa"])
async def transform(update: Any) -> Any:
@@ -214,7 +210,7 @@ class TestInvocations:
host = AgentFrameworkHost(
target=agent,
channels=[InvocationsChannel(stream_transform_hook=transform)],
channels=[InvocationsChannel(stream_update_hook=transform)],
)
with TestClient(host.app) as client:
r = client.post("/invocations", json={"message": "x", "stream": True})