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import threading
import time
from types import SimpleNamespace
from agent.core import telemetry
from agent.tools import sandbox_client, sandbox_tool
from agent.tools.sandbox_client import Sandbox
from agent.tools.sandbox_tool import sandbox_create_handler
def _fail_metadata_update(*args, **kwargs):
raise AssertionError("sandbox creation should not update Space metadata")
def _capture_duplicate_repo_call(
captured,
*,
from_id,
to_id,
repo_type,
private,
space_hardware,
space_sleep_time=None,
):
captured.update(
{
"from_id": from_id,
"to_id": to_id,
"repo_type": repo_type,
"private": private,
"space_hardware": space_hardware,
"space_sleep_time": space_sleep_time,
}
)
def test_sandbox_client_defaults_to_private_spaces(monkeypatch):
duplicate_kwargs = {}
logs: list[str] = []
requested_hardware = []
class FakeApi:
def __init__(self, token=None):
self.token = token
def duplicate_repo(
self,
*,
from_id,
to_id,
repo_type,
private,
space_hardware,
space_sleep_time=None,
):
_capture_duplicate_repo_call(
duplicate_kwargs,
from_id=from_id,
to_id=to_id,
repo_type=repo_type,
private=private,
space_hardware=space_hardware,
space_sleep_time=space_sleep_time,
)
def request_space_hardware(self, space_id, hardware, sleep_time=None):
requested_hardware.append((space_id, hardware, sleep_time))
return SimpleNamespace(stage="BUILDING", hardware=None)
def add_space_secret(self, *args, **kwargs):
pass
def get_space_runtime(self, space_id):
return SimpleNamespace(stage="RUNNING", hardware="cpu-basic")
monkeypatch.setattr(sandbox_client, "HfApi", FakeApi)
monkeypatch.setattr(
Sandbox,
"_setup_server",
staticmethod(lambda *args, **kwargs: None),
)
monkeypatch.setattr(Sandbox, "_wait_for_api", lambda self, *args, **kwargs: None)
Sandbox.create(owner="alice", token="hf-token", log=logs.append)
assert duplicate_kwargs["repo_type"] == "space"
assert duplicate_kwargs["private"] is True
assert duplicate_kwargs["space_hardware"] == "cpu-basic"
assert requested_hardware == []
assert not any("sleep time" in log for log in logs)
def test_sandbox_delete_uses_log_callback_without_stdout(monkeypatch, capsys):
deleted: list[tuple[str, str]] = []
class FakeApi:
def __init__(self, token=None):
self.token = token
def delete_repo(self, repo_id, repo_type):
deleted.append((repo_id, repo_type))
monkeypatch.setattr(sandbox_client, "HfApi", FakeApi)
sandbox = Sandbox("alice/sandbox-12345678", token="hf-token", _owns_space=True)
logs: list[str] = []
sandbox.delete(log=logs.append)
captured = capsys.readouterr()
assert captured.out == ""
assert captured.err == ""
assert deleted == [("alice/sandbox-12345678", "space")]
assert logs == ["Deleting sandbox: alice/sandbox-12345678...", "Deleted."]
assert sandbox._owns_space is False
def test_sandbox_client_retries_transient_runtime_404(monkeypatch):
runtime_calls = 0
class FakeResponse:
status_code = 404
class FakeRuntime404(Exception):
response = FakeResponse()
def __str__(self):
return "404 Client Error: Repository Not Found"
class FakeApi:
def __init__(self, token=None):
self.token = token
def duplicate_repo(
self,
*,
from_id,
to_id,
repo_type,
private,
space_hardware,
space_sleep_time=None,
):
pass
def request_space_hardware(self, space_id, hardware, sleep_time=None):
return SimpleNamespace(stage="BUILDING", hardware=None)
def add_space_secret(self, *args, **kwargs):
pass
def get_space_runtime(self, space_id):
nonlocal runtime_calls
runtime_calls += 1
if runtime_calls == 1:
raise FakeRuntime404()
return SimpleNamespace(stage="RUNNING", hardware="cpu-basic")
monkeypatch.setattr(sandbox_client, "HfApi", FakeApi)
monkeypatch.setattr(sandbox_client.time, "sleep", lambda seconds: None)
monkeypatch.setattr(
Sandbox,
"_setup_server",
staticmethod(lambda *args, **kwargs: None),
)
monkeypatch.setattr(Sandbox, "_wait_for_api", lambda self, *args, **kwargs: None)
sandbox = Sandbox.create(owner="alice", token="hf-token", log=lambda msg: None)
assert sandbox.space_id.startswith("alice/sandbox-")
assert runtime_calls == 2
def test_sandbox_client_configures_gpu_at_duplication(monkeypatch):
duplicate_kwargs = {}
logs: list[str] = []
requested_hardware = []
class FakeApi:
def __init__(self, token=None):
self.token = token
def duplicate_repo(
self,
*,
from_id,
to_id,
repo_type,
private,
space_hardware,
space_sleep_time=None,
):
_capture_duplicate_repo_call(
duplicate_kwargs,
from_id=from_id,
to_id=to_id,
repo_type=repo_type,
private=private,
space_hardware=space_hardware,
space_sleep_time=space_sleep_time,
)
def request_space_hardware(self, space_id, hardware, sleep_time=None):
requested_hardware.append((space_id, hardware, sleep_time))
def add_space_secret(self, *args, **kwargs):
pass
def get_space_runtime(self, space_id):
return SimpleNamespace(stage="RUNNING", hardware="t4-small")
monkeypatch.setattr(sandbox_client, "HfApi", FakeApi)
monkeypatch.setattr(sandbox_client.time, "sleep", lambda seconds: None)
monkeypatch.setattr(
Sandbox,
"_setup_server",
staticmethod(lambda *args, **kwargs: None),
)
monkeypatch.setattr(Sandbox, "_wait_for_api", lambda self, *args, **kwargs: None)
sandbox = Sandbox.create(
owner="alice",
token="hf-token",
hardware="t4-small",
sleep_time=2700,
log=logs.append,
)
assert sandbox.space_id.startswith("alice/sandbox-")
assert duplicate_kwargs["repo_type"] == "space"
assert duplicate_kwargs["space_hardware"] == "t4-small"
assert duplicate_kwargs["space_sleep_time"] == 2700
assert requested_hardware == []
assert "Using duplicated Space hardware: t4-small" in logs
assert "Using duplicated Space sleep time: 2700s" in logs
def test_sandbox_client_logs_cpu_sleep_time_as_hub_fixed(monkeypatch):
duplicate_kwargs = {}
logs: list[str] = []
requested_hardware = []
class FakeApi:
def __init__(self, token=None):
self.token = token
def duplicate_repo(
self,
*,
from_id,
to_id,
repo_type,
private,
space_hardware,
space_sleep_time=None,
):
_capture_duplicate_repo_call(
duplicate_kwargs,
from_id=from_id,
to_id=to_id,
repo_type=repo_type,
private=private,
space_hardware=space_hardware,
space_sleep_time=space_sleep_time,
)
def request_space_hardware(self, space_id, hardware, sleep_time=None):
requested_hardware.append((space_id, hardware, sleep_time))
def add_space_secret(self, *args, **kwargs):
pass
def get_space_runtime(self, space_id):
return SimpleNamespace(stage="RUNNING", hardware="cpu-basic")
monkeypatch.setattr(sandbox_client, "HfApi", FakeApi)
monkeypatch.setattr(
Sandbox,
"_setup_server",
staticmethod(lambda *args, **kwargs: None),
)
monkeypatch.setattr(Sandbox, "_wait_for_api", lambda self, *args, **kwargs: None)
Sandbox.create(
owner="alice",
token="hf-token",
sleep_time=2700,
log=logs.append,
)
assert duplicate_kwargs["repo_type"] == "space"
assert duplicate_kwargs["space_hardware"] == "cpu-basic"
assert duplicate_kwargs["space_sleep_time"] == 2700
assert requested_hardware == []
assert "Using duplicated Space hardware: cpu-basic" in logs
assert (
"Requested duplicated Space sleep time: 2700s "
"(cpu-basic auto-sleep is fixed by the Hub)"
) in logs
def test_sandbox_tool_forces_private_spaces(monkeypatch):
captured_kwargs = {}
async def fake_ensure_sandbox(
session,
hardware="cpu-basic",
extra_secrets=None,
**create_kwargs,
):
captured_kwargs.update(create_kwargs)
return (
SimpleNamespace(
space_id="alice/sandbox-12345678",
url="https://huggingface.co/spaces/alice/sandbox-12345678",
),
None,
)
monkeypatch.setattr(sandbox_tool, "_ensure_sandbox", fake_ensure_sandbox)
out, ok = asyncio.run(
sandbox_create_handler(
{"private": False},
session=SimpleNamespace(sandbox=None),
)
)
assert ok is True
assert "private" not in captured_kwargs
assert "Visibility: private" in out
def test_orphan_sweep_preserves_spaces_without_last_modified():
deleted: list[str] = []
logs: list[str] = []
class FakeApi:
def list_spaces(self, **kwargs):
assert kwargs["full"] is True
return [SimpleNamespace(id="alice/sandbox-12345678")]
def delete_repo(self, repo_id, repo_type):
deleted.append(repo_id)
count = sandbox_tool._cleanup_user_orphan_sandboxes(
FakeApi(),
"alice",
logs.append,
)
assert count == 0
assert deleted == []
assert logs == [
"orphan sweep: skipping alice/sandbox-12345678; missing lastModified"
]
def test_ensure_sandbox_overrides_private_argument(monkeypatch):
captured_kwargs = {}
persisted: list[dict] = []
class FakeApi:
def __init__(self, token=None):
self.token = token
def whoami(self):
return {"name": "alice"}
class FakeSession:
def __init__(self):
self.session_id = "s1"
self.hf_token = "hf-token"
self.sandbox = None
self.event_queue = SimpleNamespace(put_nowait=lambda event: None)
self._cancelled = asyncio.Event()
self.persistence_store = SimpleNamespace(
update_session_fields=lambda session_id, **fields: _record_metadata(
session_id, fields
)
)
async def send_event(self, event):
pass
async def _record_metadata(session_id, fields):
persisted.append({"session_id": session_id, **fields})
def fake_create(**kwargs):
captured_kwargs.update(kwargs)
return SimpleNamespace(
space_id="alice/sandbox-12345678",
url="https://huggingface.co/spaces/alice/sandbox-12345678",
)
async def fake_record_sandbox_create(*args, **kwargs):
pass
monkeypatch.setattr(sandbox_tool, "HfApi", FakeApi)
monkeypatch.setattr(sandbox_tool, "_cleanup_user_orphan_sandboxes", lambda *args: 0)
monkeypatch.setattr(Sandbox, "create", staticmethod(fake_create))
monkeypatch.setattr(telemetry, "record_sandbox_create", fake_record_sandbox_create)
monkeypatch.setattr("huggingface_hub.metadata_update", _fail_metadata_update)
async def run():
session = FakeSession()
sb, error = await sandbox_tool._ensure_sandbox(session, private=False)
return sb, error
sb, error = asyncio.run(run())
assert error is None
assert sb is not None
assert captured_kwargs["private"] is True
assert persisted[-1]["session_id"] == "s1"
assert persisted[-1]["sandbox_space_id"] == "alice/sandbox-12345678"
assert persisted[-1]["sandbox_hardware"] == "cpu-basic"
assert persisted[-1]["sandbox_owner"] == "alice"
assert persisted[-1]["sandbox_status"] == "active"
def test_cancelled_sandbox_creation_logs_delete_through_tool_log(monkeypatch):
deleted: list[str] = []
class FakeSession:
def __init__(self):
self.hf_token = "hf-token"
self.sandbox = None
self.event_queue = asyncio.Queue()
self._cancelled = asyncio.Event()
async def send_event(self, event):
await self.event_queue.put(event)
def fake_create(**kwargs):
def delete(log=None):
deleted.append("alice/sandbox-12345678")
if log:
log("Deleting sandbox: alice/sandbox-12345678...")
log("Deleted.")
return SimpleNamespace(
space_id="alice/sandbox-12345678",
url="https://huggingface.co/spaces/alice/sandbox-12345678",
_owns_space=True,
delete=delete,
)
monkeypatch.setattr(Sandbox, "create", staticmethod(fake_create))
async def run():
session = FakeSession()
cancel_event = threading.Event()
cancel_event.set()
sb, error = await sandbox_tool._create_sandbox_locked(
session,
api=SimpleNamespace(),
owner="alice",
hardware="cpu-basic",
cancel_event=cancel_event,
)
await asyncio.sleep(0)
events = []
while not session.event_queue.empty():
events.append(await session.event_queue.get())
return sb, error, events
sb, error, events = asyncio.run(run())
assert sb is None
assert error == "Sandbox creation cancelled by user."
assert deleted == ["alice/sandbox-12345678"]
assert [
event.data
for event in events
if event.event_type == "tool_log"
and event.data
and event.data.get("log")
in {"Deleting sandbox: alice/sandbox-12345678...", "Deleted."}
] == [
{"tool": "sandbox", "log": "Deleting sandbox: alice/sandbox-12345678..."},
{"tool": "sandbox", "log": "Deleted."},
]
def test_sandbox_creation_is_serialized_per_owner(monkeypatch):
active_creates = 0
max_active_creates = 0
active_lock = threading.Lock()
class FakeApi:
def __init__(self, token=None):
self.token = token
def whoami(self):
return {"name": "alice"}
class FakeSession:
def __init__(self):
self.hf_token = "hf-token"
self.sandbox = None
self.event_queue = SimpleNamespace(put_nowait=lambda event: None)
self._cancelled = asyncio.Event()
async def send_event(self, event):
pass
def fake_create(**kwargs):
nonlocal active_creates, max_active_creates
with active_lock:
active_creates += 1
max_active_creates = max(max_active_creates, active_creates)
time.sleep(0.02)
with active_lock:
active_creates -= 1
return SimpleNamespace(
space_id=f"alice/sandbox-{kwargs['hardware']}",
url="https://huggingface.co/spaces/alice/sandbox",
)
async def fake_record_sandbox_create(*args, **kwargs):
pass
monkeypatch.setattr(sandbox_tool, "HfApi", FakeApi)
monkeypatch.setattr(sandbox_tool, "_cleanup_user_orphan_sandboxes", lambda *args: 0)
monkeypatch.setattr(Sandbox, "create", staticmethod(fake_create))
monkeypatch.setattr(telemetry, "record_sandbox_create", fake_record_sandbox_create)
monkeypatch.setattr("huggingface_hub.metadata_update", _fail_metadata_update)
async def run():
await asyncio.gather(
sandbox_tool._ensure_sandbox(FakeSession()),
sandbox_tool._ensure_sandbox(FakeSession()),
)
asyncio.run(run())
assert max_active_creates == 1
def test_sandbox_operation_waits_for_cpu_preload():
calls: list[tuple[str, dict]] = []
class FakeSandbox:
def call_tool(self, name, args):
calls.append((name, args))
return SimpleNamespace(success=True, output="preloaded-ok", error="")
async def run():
session = SimpleNamespace(
sandbox=None,
sandbox_preload_error=None,
)
async def preload():
await asyncio.sleep(0)
session.sandbox = FakeSandbox()
session.sandbox_preload_task = asyncio.create_task(preload())
handler = sandbox_tool._make_tool_handler("bash")
return await handler({"command": "echo ok"}, session=session)
out, ok = asyncio.run(run())
assert ok is True
assert out == "preloaded-ok"
assert calls == [("bash", {"command": "echo ok"})]
def test_default_sandbox_create_waits_for_cpu_preload():
class FakeSandbox:
space_id = "alice/sandbox-cpu"
url = "https://huggingface.co/spaces/alice/sandbox-cpu"
async def run():
session = SimpleNamespace(
sandbox=None,
sandbox_preload_error=None,
)
async def preload():
await asyncio.sleep(0)
session.sandbox = FakeSandbox()
session.sandbox_hardware = "cpu-basic"
session.sandbox_preload_task = asyncio.create_task(preload())
return await sandbox_tool.sandbox_create_handler({}, session=session)
out, ok = asyncio.run(run())
assert ok is True
assert "Sandbox already active: alice/sandbox-cpu" in out
assert "Hardware: cpu-basic" in out
def test_sandbox_create_replaces_auto_cpu_sandbox(monkeypatch):
deleted: list[str] = []
class FakeSession:
def __init__(self):
self.sandbox = SimpleNamespace(
space_id="alice/sandbox-cpu",
url="https://huggingface.co/spaces/alice/sandbox-cpu",
_owns_space=True,
delete=lambda log=None: deleted.append("alice/sandbox-cpu"),
)
self.sandbox_hardware = "cpu-basic"
self.sandbox_preload_task = None
self.sandbox_preload_cancel_event = None
async def send_event(self, event):
pass
gpu_sandbox = SimpleNamespace(
space_id="alice/sandbox-gpu",
url="https://huggingface.co/spaces/alice/sandbox-gpu",
_owns_space=True,
)
async def fake_ensure_sandbox(session, hardware="cpu-basic", **kwargs):
session.sandbox = gpu_sandbox
session.sandbox_hardware = hardware
return gpu_sandbox, None
async def fake_record_sandbox_destroy(*args, **kwargs):
pass
monkeypatch.setattr(sandbox_tool, "_ensure_sandbox", fake_ensure_sandbox)
monkeypatch.setattr(
telemetry, "record_sandbox_destroy", fake_record_sandbox_destroy
)
session = FakeSession()
out, ok = asyncio.run(
sandbox_tool.sandbox_create_handler(
{"hardware": "a100-large"},
session=session,
)
)
assert ok is True
assert deleted == ["alice/sandbox-cpu"]
assert session.sandbox is gpu_sandbox
assert session.sandbox_hardware == "a100-large"
assert "Hardware: a100-large" in out
def test_teardown_cancels_preload_and_deletes_owned_sandbox(monkeypatch):
deleted: list[str] = []
destroyed: list[str] = []
persisted: list[dict] = []
async def fake_record_sandbox_destroy(session, sandbox, *args, **kwargs):
destroyed.append(sandbox.space_id)
monkeypatch.setattr(
telemetry, "record_sandbox_destroy", fake_record_sandbox_destroy
)
async def run():
cancel_event = threading.Event()
event_queue = asyncio.Queue()
async def preload():
await asyncio.sleep(0)
def delete(log=None):
deleted.append("alice/sandbox-12345678")
if log:
log("Deleting sandbox: alice/sandbox-12345678...")
log("Deleted.")
session = SimpleNamespace(
session_id="s1",
sandbox=SimpleNamespace(
space_id="alice/sandbox-12345678",
_owns_space=True,
delete=delete,
),
sandbox_hardware="cpu-basic",
sandbox_preload_task=asyncio.create_task(preload()),
sandbox_preload_cancel_event=cancel_event,
event_queue=event_queue,
persistence_store=SimpleNamespace(
update_session_fields=lambda session_id, **fields: _record_metadata(
session_id, fields
)
),
)
await sandbox_tool.teardown_session_sandbox(session)
await asyncio.sleep(0)
events = []
while not event_queue.empty():
events.append(await event_queue.get())
return session, cancel_event, events
async def _record_metadata(session_id, fields):
persisted.append({"session_id": session_id, **fields})
session, cancel_event, events = asyncio.run(run())
assert cancel_event.is_set()
assert deleted == ["alice/sandbox-12345678"]
assert destroyed == ["alice/sandbox-12345678"]
assert session.sandbox is None
assert session.sandbox_hardware is None
assert [
event.data
for event in events
if event.event_type == "tool_log"
and event.data
and event.data.get("log")
in {"Deleting sandbox: alice/sandbox-12345678...", "Deleted."}
] == [
{"tool": "sandbox", "log": "Deleting sandbox: alice/sandbox-12345678..."},
{"tool": "sandbox", "log": "Deleted."},
]
assert persisted[-1]["session_id"] == "s1"
assert persisted[-1]["sandbox_space_id"] is None
assert persisted[-1]["sandbox_status"] == "destroyed"
def test_cancel_sandbox_preload_cancels_task_after_timeout(monkeypatch):
async def run():
async def fake_wait_for(awaitable, timeout):
await asyncio.sleep(0)
raise asyncio.TimeoutError
monkeypatch.setattr(sandbox_tool.asyncio, "wait_for", fake_wait_for)
cancel_event = threading.Event()
blocker = asyncio.Event()
async def preload():
await blocker.wait()
task = asyncio.create_task(preload())
session = SimpleNamespace(
sandbox_preload_task=task,
sandbox_preload_cancel_event=cancel_event,
)
await sandbox_tool.cancel_sandbox_preload(session)
await asyncio.sleep(0)
return task.cancelled(), cancel_event.is_set()
task_cancelled, cancel_event_set = asyncio.run(run())
assert task_cancelled is True
assert cancel_event_set is True
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