feat: add Tenki sandbox provider (#17305)

### Summary

Adds a `tenki` sandbox provider that runs each agent code execution in a
disposable Tenki (https://tenki.cloud) microVM (create → exec → destroy,
no volumes or snapshots).
Registration mirrors PR #15039, configure `api_key` and `project_id` in
Admin > Sandbox Settings.

Both runtimes are covered:
- Python: `agent/sandbox/providers/tenki.py` (structured results +
artifact collection).
- Go: `internal/agent/sandbox/tenki.go`, mirroring the e2b provider and
wired into the provider manager.

`tenki-sandbox` is an optional dependency (it requires `protobuf>=6.31`,
which differs from RAGFlow's pinned gRPC stack), lazily imported with a
clear error when missing; installation is documented in the sandbox
quickstart.

Unit tests cover execution, structured results, artifacts
(symlink/size/extension limits), non-zero exit, timeout, error mapping,
and idempotent destroy.

---------

Co-authored-by: yiming.wang <yiming.wang@luxor.com>
This commit is contained in:
yiming wang
2026-07-28 19:24:39 +08:00
committed by GitHub
parent 73860170ae
commit dcadd8d837
14 changed files with 1636 additions and 7 deletions

View File

@@ -0,0 +1,428 @@
import base64
import posixpath
import stat
from types import SimpleNamespace
import pytest
from agent.sandbox.providers.base import SandboxProviderConfigError
from agent.sandbox.providers.tenki import TenkiProvider
from agent.sandbox.result_protocol import RESULT_MARKER_PREFIX
pytestmark = pytest.mark.p3
class _FakeErrors:
"""Stand-in for tenki_sandbox.errors so tests need not install the SDK."""
class QuotaExceededError(Exception):
pass
class RateLimitedError(Exception):
pass
class UnauthorizedError(Exception):
pass
class CommandTimeoutError(Exception):
pass
class PrimitiveTimeoutError(Exception):
pass
class SessionTerminatedError(Exception):
pass
class SessionNotFoundError(Exception):
pass
class FileNotFoundError(Exception):
pass
class _FakeFS:
def __init__(self):
self.files: dict[str, bytes] = {}
def write_text(self, path: str, content: str):
self.files[path] = content.encode("utf-8")
def read_bytes(self, path: str) -> bytes:
return self.files[path]
def list(self, path: str, *, include_hidden: bool = False):
# Mirror the real SDK: entry.path is the basename within `path`,
# not an absolute path.
prefix = path.rstrip("/") + "/"
entries = []
seen_dirs: set[str] = set()
for file_path, payload in self.files.items():
if not file_path.startswith(prefix):
continue
relative = file_path[len(prefix) :]
head, _, tail = relative.partition("/")
if tail: # nested -> surface the intermediate directory once
if head not in seen_dirs:
seen_dirs.add(head)
entries.append(SimpleNamespace(path=head, size=4096, mode=0o40755, is_dir=True, is_symlink=False, symlink_target=""))
continue
entries.append(
SimpleNamespace(
path=head,
size=len(payload),
mode=0o100644,
is_dir=False,
is_symlink=False,
symlink_target="",
)
)
return entries
class _FakeCommandResult:
def __init__(self, exit_code: int, stdout: str = "", stderr: str = ""):
self.exit_code = exit_code
self.stdout_text = stdout
self.stderr_text = stderr
self.stdout = stdout.encode("utf-8")
self.stderr = stderr.encode("utf-8")
class _FakeSandbox:
def __init__(self, run_handler=None):
self.id = "sbx-fake-1"
self.state = "RUNNING"
self.fs = _FakeFS()
self.terminated = False
self._run_handler = run_handler
self.exec_calls: list[tuple] = []
def exec(self, *argv, cwd=None, timeout=None, env=None, input=None, check=False, privileged=False):
self.exec_calls.append((argv, cwd, timeout))
if argv and argv[0] == "mkdir":
return _FakeCommandResult(0)
if self._run_handler is not None:
return self._run_handler(self, argv, cwd)
return _FakeCommandResult(0)
def terminate(self):
self.terminated = True
class _FakeClient:
def __init__(self, sandbox: _FakeSandbox):
self._sandbox = sandbox
self.create_kwargs = None
def who_am_i(self):
return SimpleNamespace(owner_type="WORKSPACE")
def create(self, **kwargs):
self.create_kwargs = kwargs
return self._sandbox
def _build_provider(sandbox: _FakeSandbox, monkeypatch) -> tuple[TenkiProvider, _FakeClient]:
provider = TenkiProvider()
provider.api_key = "tk_test"
provider.project_id = "proj-1"
provider.timeout = 30
provider.max_output_bytes = 1024 * 1024
provider.max_artifacts = 20
provider.max_artifact_bytes = 1024 * 1024
provider._initialized = True
client = _FakeClient(sandbox)
provider._client = client
monkeypatch.setattr(provider, "_tenki_errors", lambda: _FakeErrors)
return provider, client
def test_tenki_provider_executes_python_main_and_collects_artifacts(monkeypatch):
def run_handler(sandbox, argv, cwd):
# Simulate the script run: emit a structured result + write an artifact.
sandbox.fs.files[posixpath.join(cwd, "artifacts", "chart.png")] = b"PNGDATA"
payload = base64.b64encode(b'{"present":true,"value":{"message":"hello tenki"},"type":"json"}').decode("ascii")
return _FakeCommandResult(0, stdout=f"debug line\n{RESULT_MARKER_PREFIX}{payload}\n")
sandbox = _FakeSandbox(run_handler)
provider, _ = _build_provider(sandbox, monkeypatch)
instance = provider.create_instance("python")
result = provider.execute_code(
instance.instance_id,
'def main() -> dict:\n return {"message": "hello tenki"}\n',
"python",
timeout=5,
)
provider.destroy_instance(instance.instance_id)
assert result.exit_code == 0
assert result.stdout == "debug line\n"
assert result.metadata["result_present"] is True
assert result.metadata["result_value"] == {"message": "hello tenki"}
assert result.metadata["artifacts"] == [
{
"name": "chart.png",
"content_b64": base64.b64encode(b"PNGDATA").decode("ascii"),
"mime_type": "image/png",
"size": 7,
}
]
assert sandbox.terminated is True
def test_tenki_provider_reports_nonzero_exit(monkeypatch):
def run_handler(sandbox, argv, cwd):
return _FakeCommandResult(7, stdout="", stderr="boom\n")
sandbox = _FakeSandbox(run_handler)
provider, _ = _build_provider(sandbox, monkeypatch)
instance = provider.create_instance("python")
result = provider.execute_code(instance.instance_id, "def main():\n raise SystemExit(7)\n", "python", timeout=5)
assert result.exit_code == 7
assert result.stderr == "boom\n"
assert result.metadata["status"] == "error"
assert result.metadata["result_present"] is False
def test_tenki_provider_propagates_timeout(monkeypatch):
def run_handler(sandbox, argv, cwd):
raise _FakeErrors.CommandTimeoutError("timed out")
sandbox = _FakeSandbox(run_handler)
provider, _ = _build_provider(sandbox, monkeypatch)
instance = provider.create_instance("python")
with pytest.raises(TimeoutError, match="timed out after"):
provider.execute_code(instance.instance_id, "def main():\n return 1\n", "python", timeout=5)
def test_tenki_provider_create_maps_quota_error(monkeypatch):
sandbox = _FakeSandbox()
provider, client = _build_provider(sandbox, monkeypatch)
def _raise_quota(**kwargs):
raise _FakeErrors.QuotaExceededError("no credits")
client.create = _raise_quota
with pytest.raises(RuntimeError, match="quota exceeded"):
provider.create_instance("python")
def test_tenki_provider_destroy_is_idempotent(monkeypatch):
sandbox = _FakeSandbox()
provider, _ = _build_provider(sandbox, monkeypatch)
# Destroying an unknown instance returns True without error.
assert provider.destroy_instance("nonexistent") is True
def test_tenki_provider_create_passes_project_and_outbound(monkeypatch):
sandbox = _FakeSandbox()
provider, client = _build_provider(sandbox, monkeypatch)
provider.image = "my-image"
provider.cpu_cores = 4
provider.allow_outbound = True
provider.create_instance("python")
assert client.create_kwargs["project_id"] == "proj-1"
assert client.create_kwargs["allow_outbound"] is True
assert client.create_kwargs["image"] == "my-image"
assert client.create_kwargs["cpu_cores"] == 4
def test_tenki_provider_config_schema_and_validation():
schema = TenkiProvider.get_config_schema()
assert schema["api_key"]["required"] is True
assert schema["api_key"]["secret"] is True
assert schema["project_id"]["required"] is True
provider = TenkiProvider()
ok, _ = provider.validate_config({"api_key": "tk", "project_id": "p", "timeout": 30, "max_lifetime": 3600, "max_output_bytes": 1024, "max_artifacts": 5, "max_artifact_bytes": 1024})
assert ok is True
bad, msg = provider.validate_config({"api_key": "", "project_id": "p"})
assert bad is False
assert "API key" in msg
def test_tenki_provider_supported_languages():
assert TenkiProvider().get_supported_languages() == ["python", "javascript"]
def test_tenki_provider_initialize_maps_auth_error(monkeypatch):
provider = TenkiProvider()
monkeypatch.setattr(provider, "_tenki_errors", lambda: _FakeErrors)
class _UnauthorizedClient:
def who_am_i(self):
raise _FakeErrors.UnauthorizedError("bad token")
monkeypatch.setattr(provider, "_create_client", lambda: _UnauthorizedClient())
with pytest.raises(SandboxProviderConfigError, match="authentication failed"):
provider.initialize({"api_key": "tk_bad", "project_id": "proj-1"})
def test_tenki_provider_instances_are_independent(monkeypatch):
sandboxes: list[_FakeSandbox] = []
class _MultiClient(_FakeClient):
def create(self, **kwargs):
sb = _FakeSandbox()
sb.id = f"sbx-{len(sandboxes)}"
sandboxes.append(sb)
return sb
provider = TenkiProvider()
provider.api_key = "tk_test"
provider.project_id = "proj-1"
provider.timeout = 30
provider._initialized = True
provider._client = _MultiClient(None)
monkeypatch.setattr(provider, "_tenki_errors", lambda: _FakeErrors)
a = provider.create_instance("python")
b = provider.create_instance("python")
assert a.instance_id != b.instance_id
assert a.metadata["sandbox_id"] != b.metadata["sandbox_id"]
provider.destroy_instance(a.instance_id)
assert sandboxes[0].terminated is True
assert sandboxes[1].terminated is False # destroying one leaves the other running
provider.destroy_instance(b.instance_id)
assert sandboxes[1].terminated is True
def test_tenki_provider_executes_javascript(monkeypatch):
def run_handler(sandbox, argv, cwd):
payload = base64.b64encode(b'{"present":true,"value":42,"type":"json"}').decode("ascii")
return _FakeCommandResult(0, stdout=f"{RESULT_MARKER_PREFIX}{payload}\n")
sandbox = _FakeSandbox(run_handler)
provider, _ = _build_provider(sandbox, monkeypatch)
inst = provider.create_instance("javascript")
assert inst.metadata["language"] == "nodejs"
result = provider.execute_code(inst.instance_id, "function main(args){return 42;}", "javascript", timeout=5)
# The script is written as main.js and run with node.
assert any(k.endswith("main.js") for k in sandbox.fs.files)
run_argv = [c[0] for c in sandbox.exec_calls if c[0] and c[0][0] == "node"]
assert run_argv, "expected a node invocation"
assert result.metadata["result_value"] == 42
def test_tenki_provider_rejects_symlink_artifacts(monkeypatch):
provider, _ = _build_provider(_FakeSandbox(), monkeypatch)
class _SymlinkFS:
def list(self, path, *, include_hidden=False):
# is_symlink False but mode marks a symlink -> must still be rejected.
return [SimpleNamespace(path="evil.json", size=10, mode=stat.S_IFLNK | 0o777, is_dir=False, is_symlink=False, symlink_target="/etc/passwd")]
fake_sb = SimpleNamespace(fs=_SymlinkFS())
with pytest.raises(RuntimeError, match="symlinks are not allowed"):
provider._collect_artifacts(fake_sb, "/home/tenki/wk/artifacts")
def test_tenki_provider_enforces_output_size_limit(monkeypatch):
def run_handler(sandbox, argv, cwd):
return _FakeCommandResult(0, stdout="x" * 5000)
sandbox = _FakeSandbox(run_handler)
provider, _ = _build_provider(sandbox, monkeypatch)
provider.max_output_bytes = 100
inst = provider.create_instance("python")
with pytest.raises(RuntimeError, match="output exceeded"):
provider.execute_code(inst.instance_id, "def main():\n return 1\n", "python", timeout=5)
def test_tenki_provider_rejects_disallowed_artifact_extension(monkeypatch):
def run_handler(sandbox, argv, cwd):
sandbox.fs.files[posixpath.join(cwd, "artifacts", "malware.exe")] = b"MZ"
return _FakeCommandResult(0, stdout="")
sandbox = _FakeSandbox(run_handler)
provider, _ = _build_provider(sandbox, monkeypatch)
inst = provider.create_instance("python")
with pytest.raises(RuntimeError, match="Unsupported artifact type"):
provider.execute_code(inst.instance_id, "def main():\n return 1\n", "python", timeout=5)
def test_tenki_provider_allow_outbound_configurable(monkeypatch):
sandbox = _FakeSandbox()
provider, client = _build_provider(sandbox, monkeypatch)
provider.allow_outbound = False
provider.create_instance("python")
assert client.create_kwargs["allow_outbound"] is False
def test_tenki_provider_maps_session_terminated(monkeypatch):
def run_handler(sandbox, argv, cwd):
raise _FakeErrors.SessionTerminatedError("reclaimed")
sandbox = _FakeSandbox(run_handler)
provider, _ = _build_provider(sandbox, monkeypatch)
inst = provider.create_instance("python")
with pytest.raises(RuntimeError, match="no longer available"):
provider.execute_code(inst.instance_id, "def main():\n return 1\n", "python", timeout=5)
def test_tenki_provider_create_maps_rate_limit(monkeypatch):
sandbox = _FakeSandbox()
provider, client = _build_provider(sandbox, monkeypatch)
def _raise_rate(**kwargs):
raise _FakeErrors.RateLimitedError("slow down")
client.create = _raise_rate
with pytest.raises(RuntimeError, match="rate limited"):
provider.create_instance("python")
def test_tenki_provider_create_wraps_unexpected_sdk_error(monkeypatch):
sandbox = _FakeSandbox()
provider, client = _build_provider(sandbox, monkeypatch)
def _raise_other(**kwargs):
raise ValueError("weird sdk failure")
client.create = _raise_other
with pytest.raises(RuntimeError, match="Failed to create Tenki sandbox"):
provider.create_instance("python")
def test_tenki_provider_enforces_max_artifacts(monkeypatch):
def run_handler(sandbox, argv, cwd):
for i in range(3):
sandbox.fs.files[posixpath.join(cwd, "artifacts", f"f{i}.json")] = b"{}"
return _FakeCommandResult(0, stdout="")
sandbox = _FakeSandbox(run_handler)
provider, _ = _build_provider(sandbox, monkeypatch)
provider.max_artifacts = 2
inst = provider.create_instance("python")
with pytest.raises(RuntimeError, match="more than 2 artifacts"):
provider.execute_code(inst.instance_id, "def main():\n return 1\n", "python", timeout=5)
def test_tenki_provider_enforces_max_artifact_bytes(monkeypatch):
def run_handler(sandbox, argv, cwd):
sandbox.fs.files[posixpath.join(cwd, "artifacts", "big.json")] = b"x" * 5000
return _FakeCommandResult(0, stdout="")
sandbox = _FakeSandbox(run_handler)
provider, _ = _build_provider(sandbox, monkeypatch)
provider.max_artifact_bytes = 100
inst = provider.create_instance("python")
with pytest.raises(RuntimeError, match="exceeds 100 bytes"):
provider.execute_code(inst.instance_id, "def main():\n return 1\n", "python", timeout=5)