Files
ttulttul-ComfyUI-Modal/tests/test_sync_engine.py
T

1796 lines
64 KiB
Python

"""Tests for asset syncing and custom_nodes archiving."""
from __future__ import annotations
import json
from pathlib import Path
import threading
import time
import types
from typing import Any
import zipfile
import pytest
def test_sync_file_deduplicates_by_hash(
settings_module: Any,
sync_engine_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""Repeated file syncs should reuse the same remote path and sync-index record."""
monkeypatch.setattr(sync_engine_module, "modal", None)
asset_path = tmp_path / "model.safetensors"
asset_path.write_bytes(b"model-bytes")
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="local",
sync_custom_nodes=False,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=None,
)
engine = sync_engine_module.ModalAssetSyncEngine.from_environment(settings)
first = engine.sync_file(asset_path)
second = engine.sync_file(asset_path)
assert first.remote_path == second.remote_path
assert first.sha256 == second.sha256
assert first.uploaded is True
assert second.uploaded is False
assert (settings.local_storage_root / first.remote_path.lstrip("/")).exists()
sync_index_path = settings.local_storage_root / "metadata" / "sync_index.json"
assert sync_index_path.exists()
assert first.remote_path in sync_index_path.read_text(encoding="utf-8")
def test_request_asset_cache_syncs_repeated_prompt_asset_once(
settings_module: Any,
sync_engine_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""Repeated references across remote nodes should share one request sync decision."""
monkeypatch.setattr(sync_engine_module, "modal", None)
asset_path = tmp_path / "model.safetensors"
asset_path.write_bytes(b"model-bytes")
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="local",
sync_custom_nodes=False,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=None,
)
engine = sync_engine_module.ModalAssetSyncEngine.from_environment(settings)
sync_calls: list[Path] = []
original_sync_file = engine.sync_file
def recording_sync_file(local_path: Path, *args: Any, **kwargs: Any) -> Any:
"""Record actual request sync decisions before delegating."""
sync_calls.append(local_path.resolve())
return original_sync_file(local_path, *args, **kwargs)
monkeypatch.setattr(engine, "sync_file", recording_sync_file)
request_cache = engine.create_request_asset_cache(
({"model": str(asset_path)}, {"second_model": str(asset_path)})
)
first_inputs, first_assets = engine.sync_prompt_inputs(
{"model": str(asset_path)},
request_cache=request_cache,
)
second_inputs, second_assets = engine.sync_prompt_inputs(
{"second_model": str(asset_path)},
request_cache=request_cache,
)
assert sync_calls == [asset_path.resolve()]
assert first_inputs["model"] == second_inputs["second_model"]
assert first_assets == second_assets
assert request_cache.synced_assets() == (first_assets[0],)
def test_sync_file_emits_upload_status(
settings_module: Any,
sync_engine_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""Uploading a new asset should emit a status message naming the uploaded file."""
monkeypatch.setattr(sync_engine_module, "modal", None)
asset_path = tmp_path / "model.safetensors"
asset_path.write_bytes(b"model-bytes")
observed_statuses: list[tuple[str, int | None, int | None]] = []
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="local",
sync_custom_nodes=False,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=None,
)
engine = sync_engine_module.ModalAssetSyncEngine.from_environment(settings)
engine.sync_file(
asset_path,
status_callback=lambda message, current, total: observed_statuses.append(
(message, current, total)
),
item_index=1,
total_items=2,
)
assert observed_statuses == [("Uploading asset 1/2 to Modal: model.safetensors", 1, 2)]
def test_sync_file_uses_self_hosted_destination_in_ssh_mode(
settings_module: Any,
sync_engine_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""SSH uploads should not describe the destination as Modal."""
monkeypatch.setattr(sync_engine_module, "modal", None)
asset_path = tmp_path / "model.safetensors"
asset_path.write_bytes(b"model-bytes")
observed_statuses: list[tuple[str, int | None, int | None]] = []
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="ssh_docker",
sync_custom_nodes=False,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=None,
)
engine = sync_engine_module.ModalAssetSyncEngine.from_environment(settings)
engine.sync_file(
asset_path,
status_callback=lambda message, current, total: observed_statuses.append(
(message, current, total)
),
)
assert observed_statuses == [
("Uploading asset to the self-hosted worker: model.safetensors", None, None)
]
def test_vast_sync_materializes_registered_huggingface_asset_before_upload(
settings_module: Any,
sync_engine_module: Any,
huggingface_assets_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""A registered Vast asset should be fetched remotely with the local hash contract."""
asset_path = tmp_path / "model.safetensors"
asset_path.write_bytes(b"hub-backed-model")
sha256 = huggingface_assets_module.sha256_file(asset_path)
source = huggingface_assets_module.HuggingFaceAssetSource(
repo_id="owner/model",
revision="a" * 40,
filename="weights/model.safetensors",
sha256=sha256,
size_bytes=asset_path.stat().st_size,
)
registry = huggingface_assets_module.HuggingFaceAssetRegistry(
tmp_path / "user" / "huggingface-assets.json"
)
registry.upsert(source)
observed_materializations: list[tuple[Any, str, str | None]] = []
observed_uploads: list[tuple[Path, str]] = []
observed_statuses: list[tuple[str, int | None, int | None]] = []
class MaterializingVolume:
"""Expose the optional remote acquisition capability under test."""
def exists(self, remote_path: str) -> bool:
"""Report an initially empty remote store."""
del remote_path
return False
def put_file(self, local_path: Path, remote_path: str) -> None:
"""Record a fallback upload that should not be needed."""
observed_uploads.append((local_path, remote_path))
def put_bytes(self, payload: bytes, remote_path: str) -> None:
"""Accept sync-index sentinel bytes for protocol completeness."""
del payload, remote_path
def materialize_huggingface_file(
self,
registered_source: Any,
remote_path: str,
*,
token: str | None,
) -> bool:
"""Record and accept one direct Hub materialization."""
observed_materializations.append((registered_source, remote_path, token))
return True
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="vast",
sync_custom_nodes=False,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=None,
)
monkeypatch.setenv("HF_TOKEN", "secret-hf-token")
engine = sync_engine_module.ModalAssetSyncEngine(
volume=MaterializingVolume(),
settings=settings,
huggingface_asset_registry=registry,
)
result = engine.sync_file(
asset_path,
status_callback=lambda message, current, total: observed_statuses.append(
(message, current, total)
),
item_index=1,
total_items=2,
)
assert observed_uploads == []
assert observed_materializations == [
(source, result.remote_path, "secret-hf-token")
]
assert observed_statuses == [
(
"Downloading asset 1/2 from Hugging Face on Vast.ai: model.safetensors",
1,
2,
)
]
def test_vast_sync_automatically_discovers_huggingface_asset(
settings_module: Any,
sync_engine_module: Any,
huggingface_assets_module: Any,
tmp_path: Path,
) -> None:
"""Vast sync should discover provenance without a user-run registration command."""
asset_path = tmp_path / "automatic.safetensors"
asset_path.write_bytes(b"automatically-discovered")
source = huggingface_assets_module.HuggingFaceAssetSource(
repo_id="owner/automatic",
revision="9" * 40,
filename="automatic.safetensors",
sha256=huggingface_assets_module.sha256_file(asset_path),
size_bytes=asset_path.stat().st_size,
)
statuses: list[str] = []
discoveries: list[tuple[Path, str]] = []
class DiscoveringVolume:
"""Accept direct Hub materialization and reject local upload use."""
def exists(self, remote_path: str) -> bool:
"""Report no preexisting remote asset."""
del remote_path
return False
def put_file(self, local_path: Path, remote_path: str) -> None:
"""Fail if automatic discovery unexpectedly falls back to upload."""
raise AssertionError(f"Unexpected upload of {local_path} to {remote_path}")
def put_bytes(self, payload: bytes, remote_path: str) -> None:
"""Accept protocol metadata writes."""
del payload, remote_path
def materialize_huggingface_file(
self,
registered_source: Any,
remote_path: str,
*,
token: str | None,
) -> bool:
"""Accept the automatically discovered immutable source."""
del remote_path, token
assert registered_source == source
return True
class FakeDiscovery:
"""Return an automatically verified source for the local asset."""
def discover(self, local_path: Path, *, sha256: str) -> Any:
"""Record discovery and return the expected source."""
discoveries.append((local_path, sha256))
return source
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="vast",
sync_custom_nodes=False,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=None,
)
engine = sync_engine_module.ModalAssetSyncEngine(
volume=DiscoveringVolume(),
settings=settings,
huggingface_asset_registry=huggingface_assets_module.HuggingFaceAssetRegistry(
tmp_path / "empty-registry.json"
),
huggingface_asset_discovery=FakeDiscovery(),
)
engine.sync_file(
asset_path,
status_callback=lambda message, current, total: statuses.append(message),
)
assert discoveries == [(asset_path, source.sha256)]
assert statuses == [
"Identifying Hugging Face source for Vast.ai: automatic.safetensors",
"Downloading asset from Hugging Face on Vast.ai: automatic.safetensors",
]
def test_resolve_model_path_preserves_huggingface_cache_symlink(
sync_engine_module: Any,
tmp_path: Path,
) -> None:
"""Model resolution must retain a cache symlink long enough for provenance discovery."""
cached_file = tmp_path / "cache" / "model.safetensors"
cached_file.parent.mkdir()
cached_file.write_bytes(b"cached")
linked_file = tmp_path / "models" / "model.safetensors"
linked_file.parent.mkdir()
linked_file.symlink_to(cached_file)
resolved = sync_engine_module.resolve_model_path(str(linked_file))
assert resolved == linked_file
assert resolved.resolve() == cached_file
def test_vast_sync_falls_back_to_upload_after_huggingface_failure(
settings_module: Any,
sync_engine_module: Any,
huggingface_assets_module: Any,
tmp_path: Path,
) -> None:
"""A remote Hub miss should retain the existing content-addressed upload behavior."""
asset_path = tmp_path / "model.safetensors"
asset_path.write_bytes(b"fallback-model")
source = huggingface_assets_module.HuggingFaceAssetSource(
repo_id="owner/model",
revision="b" * 40,
filename="model.safetensors",
sha256=huggingface_assets_module.sha256_file(asset_path),
size_bytes=asset_path.stat().st_size,
)
registry = huggingface_assets_module.HuggingFaceAssetRegistry(
tmp_path / "user" / "huggingface-assets.json"
)
registry.upsert(source)
uploads: list[tuple[Path, str]] = []
statuses: list[str] = []
class FailingMaterializingVolume:
"""Decline remote acquisition and record the fallback upload."""
def exists(self, remote_path: str) -> bool:
"""Report no cached files."""
del remote_path
return False
def put_file(self, local_path: Path, remote_path: str) -> None:
"""Record the safe fallback path."""
uploads.append((local_path, remote_path))
def put_bytes(self, payload: bytes, remote_path: str) -> None:
"""Accept protocol metadata writes."""
del payload, remote_path
def materialize_huggingface_file(
self,
registered_source: Any,
remote_path: str,
*,
token: str | None,
) -> bool:
"""Simulate an unavailable or unauthorized Hub source."""
del registered_source, remote_path, token
return False
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="vast",
sync_custom_nodes=False,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=None,
)
engine = sync_engine_module.ModalAssetSyncEngine(
volume=FailingMaterializingVolume(),
settings=settings,
huggingface_asset_registry=registry,
)
result = engine.sync_file(
asset_path,
status_callback=lambda message, current, total: statuses.append(message),
)
assert uploads == [(asset_path.resolve(), result.remote_path)]
assert statuses == [
"Downloading asset from Hugging Face on Vast.ai: model.safetensors",
"Uploading asset to the Vast.ai instance: model.safetensors",
]
def test_sync_custom_nodes_directory_creates_archive(
settings_module: Any,
sync_engine_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""The sync engine should archive and mirror a custom_nodes directory."""
monkeypatch.setattr(sync_engine_module, "modal", None)
custom_nodes_dir = tmp_path / "custom_nodes"
package_dir = custom_nodes_dir / "example"
package_dir.mkdir(parents=True)
(package_dir / "__init__.py").write_text("NODE_CLASS_MAPPINGS = {}\n", encoding="utf-8")
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="remote",
sync_custom_nodes=True,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=custom_nodes_dir,
)
engine = sync_engine_module.ModalAssetSyncEngine.from_environment(settings)
bundle = engine.sync_custom_nodes_directory()
assert bundle is not None
assert bundle.remote_path.startswith("/custom_nodes/")
assert bundle.uploaded is True
assert (settings.local_storage_root / bundle.remote_path.lstrip("/")).exists()
def test_sync_custom_nodes_directory_only_checks_once_per_engine_lifetime(
settings_module: Any,
sync_engine_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""The same sync engine should not rescan custom_nodes after the first successful sync."""
monkeypatch.setattr(sync_engine_module, "modal", None)
custom_nodes_dir = tmp_path / "custom_nodes"
package_dir = custom_nodes_dir / "example"
package_dir.mkdir(parents=True)
(package_dir / "__init__.py").write_text("NODE_CLASS_MAPPINGS = {}\n", encoding="utf-8")
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="remote",
sync_custom_nodes=True,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=custom_nodes_dir,
)
engine = sync_engine_module.ModalAssetSyncEngine.from_environment(settings)
first_bundle = engine.sync_custom_nodes_directory()
assert first_bundle is not None
assert first_bundle.uploaded is True
(package_dir / "new_file.py").write_text("print('new node')\n", encoding="utf-8")
def fail_hash_directory(path: Path) -> str:
"""Fail the test when a second custom_nodes scan happens."""
raise AssertionError(f"Did not expect custom_nodes to be rehashed: {path}")
monkeypatch.setattr(engine, "_hash_directory", fail_hash_directory)
second_bundle = engine.sync_custom_nodes_directory()
assert second_bundle == sync_engine_module.SyncedAsset(
local_path=first_bundle.local_path,
remote_path=first_bundle.remote_path,
sha256=first_bundle.sha256,
uploaded=False,
)
def test_sync_custom_nodes_directory_emits_packaging_and_upload_status(
settings_module: Any,
sync_engine_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""Building a new custom_nodes archive should report packaging and upload stages."""
monkeypatch.setattr(sync_engine_module, "modal", None)
custom_nodes_dir = tmp_path / "custom_nodes"
package_dir = custom_nodes_dir / "example"
package_dir.mkdir(parents=True)
(package_dir / "__init__.py").write_text("NODE_CLASS_MAPPINGS = {}\n", encoding="utf-8")
observed_statuses: list[tuple[str, int | None, int | None]] = []
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="remote",
sync_custom_nodes=True,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=custom_nodes_dir,
)
engine = sync_engine_module.ModalAssetSyncEngine.from_environment(settings)
engine.sync_custom_nodes_directory(
status_callback=lambda message, current, total: observed_statuses.append(
(message, current, total)
)
)
assert observed_statuses == [
("Packaging custom-node code for Modal", None, None),
("Uploading custom-node code and assets to Modal", None, None),
]
def test_sync_custom_nodes_directory_concurrent_calls_share_one_initial_sync(
settings_module: Any,
sync_engine_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""Concurrent first-run calls should serialize behind one custom_nodes sync decision."""
monkeypatch.setattr(sync_engine_module, "modal", None)
custom_nodes_dir = tmp_path / "custom_nodes"
package_dir = custom_nodes_dir / "example"
package_dir.mkdir(parents=True)
(package_dir / "__init__.py").write_text("NODE_CLASS_MAPPINGS = {}\n", encoding="utf-8")
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="remote",
sync_custom_nodes=True,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=custom_nodes_dir,
)
engine = sync_engine_module.ModalAssetSyncEngine.from_environment(settings)
original_sync = engine._sync_custom_nodes_directory_uncached
sync_call_count = 0
sync_call_count_lock = threading.Lock()
release_first_sync = threading.Event()
def wrapped_sync(*, status_callback: Any = None) -> Any:
"""Count uncached sync executions and block the first one briefly."""
nonlocal sync_call_count
with sync_call_count_lock:
sync_call_count += 1
release_first_sync.wait(timeout=5.0)
return original_sync(status_callback=status_callback)
monkeypatch.setattr(engine, "_sync_custom_nodes_directory_uncached", wrapped_sync)
results: list[Any] = [None, None]
def run_sync(index: int) -> None:
"""Run one custom_nodes sync call and store the result."""
results[index] = engine.sync_custom_nodes_directory()
first_thread = threading.Thread(target=run_sync, args=(0,))
second_thread = threading.Thread(target=run_sync, args=(1,))
first_thread.start()
time.sleep(0.1)
second_thread.start()
release_first_sync.set()
first_thread.join(timeout=5.0)
second_thread.join(timeout=5.0)
assert not first_thread.is_alive()
assert not second_thread.is_alive()
assert sync_call_count == 1
assert results[0] is not None
assert results[1] is not None
assert results[0].remote_path == results[1].remote_path
assert results[0].sha256 == results[1].sha256
assert results[0].uploaded is True
assert results[1].uploaded is False
def test_hash_directory_ignores_virtualenv_and_bytecode_artifacts(
settings_module: Any,
sync_engine_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""Ignored directories and file suffixes should not affect custom_nodes hashing."""
monkeypatch.setattr(sync_engine_module, "modal", None)
custom_nodes_dir = tmp_path / "custom_nodes"
package_dir = custom_nodes_dir / "example"
package_dir.mkdir(parents=True)
(package_dir / "__init__.py").write_text("NODE_CLASS_MAPPINGS = {}\n", encoding="utf-8")
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="remote",
sync_custom_nodes=True,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=custom_nodes_dir,
)
engine = sync_engine_module.ModalAssetSyncEngine.from_environment(settings)
baseline_hash = engine._hash_directory(custom_nodes_dir)
ignored_venv_dir = custom_nodes_dir / ".venv" / "lib"
ignored_venv_dir.mkdir(parents=True)
(ignored_venv_dir / "ignored.py").write_text("print('ignored')\n", encoding="utf-8")
ignored_cache_dir = package_dir / "__pycache__"
ignored_cache_dir.mkdir()
(ignored_cache_dir / "example.cpython-312.pyc").write_bytes(b"bytecode")
(package_dir / "ignored.pyc").write_bytes(b"bytecode")
(package_dir / "ignored.log").write_text("log noise\n", encoding="utf-8")
ignored_hash = engine._hash_directory(custom_nodes_dir)
assert ignored_hash == baseline_hash
def test_sync_file_reuses_cached_hash_for_unchanged_file(
settings_module: Any,
sync_engine_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""Unchanged files should reuse the persisted file digest instead of re-reading the payload."""
monkeypatch.setattr(sync_engine_module, "modal", None)
asset_path = tmp_path / "model.safetensors"
asset_path.write_bytes(b"model-bytes")
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="local",
sync_custom_nodes=False,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=None,
)
first_engine = sync_engine_module.ModalAssetSyncEngine.from_environment(settings)
first_sha = first_engine._hash_file(asset_path)
second_engine = sync_engine_module.ModalAssetSyncEngine.from_environment(settings)
def fail_open(*args: Any, **kwargs: Any) -> Any:
raise AssertionError("Expected cached hash lookup to avoid reopening the unchanged file.")
monkeypatch.setattr(Path, "open", fail_open)
second_sha = second_engine._hash_file(asset_path)
assert second_sha == first_sha
def test_sync_custom_nodes_directory_reuses_cached_archive(
settings_module: Any,
sync_engine_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""An unchanged custom_nodes tree should reuse its digest-keyed local archive."""
monkeypatch.setattr(sync_engine_module, "modal", None)
custom_nodes_dir = tmp_path / "custom_nodes"
package_dir = custom_nodes_dir / "example"
package_dir.mkdir(parents=True)
(package_dir / "__init__.py").write_text("NODE_CLASS_MAPPINGS = {}\n", encoding="utf-8")
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="remote",
sync_custom_nodes=True,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=custom_nodes_dir,
)
first_engine = sync_engine_module.ModalAssetSyncEngine.from_environment(settings)
first_bundle = first_engine.sync_custom_nodes_directory()
assert first_bundle is not None
class NeverExistsVolume:
"""Volume double that forces archive reuse without any remote metadata probes."""
def exists(self, remote_path: str) -> bool:
return False
def put_file(self, local_path: Path, remote_path: str) -> None:
return None
def put_bytes(self, payload: bytes, remote_path: str) -> None:
return None
second_engine = sync_engine_module.ModalAssetSyncEngine(
volume=NeverExistsVolume(),
settings=settings,
)
def fail_create_archive(*args: Any, **kwargs: Any) -> Any:
raise AssertionError("Expected cached custom_nodes archive to be reused.")
monkeypatch.setattr(second_engine, "_create_archive", fail_create_archive)
second_bundle = second_engine.sync_custom_nodes_directory()
assert second_bundle is not None
assert second_bundle.sha256 == first_bundle.sha256
assert second_bundle.uploaded is False
entry_hash = second_engine._custom_nodes_archive_specs(custom_nodes_dir)[0].sha256
assert second_engine._cached_custom_nodes_archive_path("example", entry_hash).exists()
def test_sync_custom_nodes_separates_code_assets_and_nested_virtualenv(
settings_module: Any,
sync_engine_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""Code ZIPs should exclude mounted model assets and nested virtual environments."""
monkeypatch.setattr(sync_engine_module, "modal", None)
custom_nodes_dir = tmp_path / "custom_nodes"
package_dir = custom_nodes_dir / "example"
package_dir.mkdir(parents=True)
(package_dir / "__init__.py").write_text("NODE_CLASS_MAPPINGS = {}\n", encoding="utf-8")
model_path = package_dir / "checkpoints" / "model.pth"
model_path.parent.mkdir()
model_path.write_bytes(b"package-model-weights")
venv_path = package_dir / ".venv" / "lib" / "site-packages" / "ignored.py"
venv_path.parent.mkdir(parents=True)
venv_path.write_text("raise RuntimeError('must not ship')\n", encoding="utf-8")
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="remote",
sync_custom_nodes=True,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=custom_nodes_dir,
)
engine = sync_engine_module.ModalAssetSyncEngine.from_environment(settings)
bundle = engine.sync_custom_nodes_directory()
assert bundle is not None
manifest_path = settings.local_storage_root / bundle.remote_path.lstrip("/")
manifest = json.loads(manifest_path.read_text(encoding="utf-8"))
assert manifest["version"] == 2
[entry] = manifest["entries"]
[asset] = entry["assets"]
assert asset["relative_path"] == "example/checkpoints/model.pth"
assert asset["size_bytes"] == len(b"package-model-weights")
asset_path = settings.local_storage_root / asset["remote_path"].lstrip("/")
assert asset_path.read_bytes() == b"package-model-weights"
archive_path = settings.local_storage_root / entry["remote_path"].lstrip("/")
with zipfile.ZipFile(archive_path, "r") as archive:
archived_names = archive.namelist()
assert "example/__init__.py" in archived_names
assert "example/checkpoints/model.pth" not in archived_names
assert not any(".venv" in name for name in archived_names)
def test_sync_file_reuses_sync_index_record_for_existing_remote_payload(
settings_module: Any,
sync_engine_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""An indexed deterministic asset should be reused without a second upload."""
monkeypatch.setattr(sync_engine_module, "modal", None)
asset_path = tmp_path / "model.safetensors"
asset_path.write_bytes(b"model-bytes")
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="local",
sync_custom_nodes=False,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=None,
)
class RecordingVolume:
"""Volume double that records any attempted uploads."""
def __init__(self) -> None:
"""Initialize captured writes."""
self.put_file_calls: list[tuple[Path, str]] = []
def put_file(self, local_path: Path, remote_path: str) -> None:
self.put_file_calls.append((local_path, remote_path))
def put_bytes(self, payload: bytes, remote_path: str) -> None:
raise AssertionError("Sync records should not be mirrored as marker files.")
def exists(self, remote_path: str) -> bool:
raise AssertionError("Sync should not probe volume metadata for indexed payloads.")
volume = RecordingVolume()
engine = sync_engine_module.ModalAssetSyncEngine(volume=volume, settings=settings)
engine.sync_index.put(
engine._asset_sync_index_key(engine._hash_file(asset_path)),
{"remote_path": "/assets/existing_model.safetensors", "source": "existing"},
)
synced_asset = engine.sync_file(asset_path)
assert synced_asset.uploaded is False
assert synced_asset.remote_path == "/assets/existing_model.safetensors"
assert volume.put_file_calls == []
def test_sync_custom_nodes_directory_reuses_indexed_remote_bundle(
settings_module: Any,
sync_engine_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""An indexed hash-named remote custom_nodes bundle should be reused without rebuilding or reuploading."""
monkeypatch.setattr(sync_engine_module, "modal", None)
custom_nodes_dir = tmp_path / "custom_nodes"
package_dir = custom_nodes_dir / "example"
package_dir.mkdir(parents=True)
(package_dir / "__init__.py").write_text("NODE_CLASS_MAPPINGS = {}\n", encoding="utf-8")
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="remote",
sync_custom_nodes=True,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=custom_nodes_dir,
)
engine = sync_engine_module.ModalAssetSyncEngine.from_environment(settings)
directory_hash = engine._hash_directory(custom_nodes_dir)
remote_path = engine._custom_nodes_manifest_remote_path(directory_hash)
class RecordingVolume:
"""Volume double that records any attempted uploads."""
def __init__(self) -> None:
"""Initialize captured writes."""
self.put_file_calls: list[tuple[Path, str]] = []
def put_file(self, local_path: Path, candidate_path: str) -> None:
self.put_file_calls.append((local_path, candidate_path))
def put_bytes(self, payload: bytes, candidate_path: str) -> None:
raise AssertionError("Sync records should not be mirrored as marker files.")
def exists(self, candidate_path: str) -> bool:
raise AssertionError("Sync should not probe volume metadata for indexed bundles.")
volume = RecordingVolume()
engine = sync_engine_module.ModalAssetSyncEngine(volume=volume, settings=settings)
engine.sync_index.put(
engine._custom_nodes_manifest_sync_index_key(directory_hash),
{"remote_path": remote_path, "source": str(custom_nodes_dir)},
)
def fail_create_archive(*args: Any, **kwargs: Any) -> Any:
raise AssertionError("Expected the indexed hash-named remote bundle to be reused.")
monkeypatch.setattr(engine, "_create_archive", fail_create_archive)
bundle = engine.sync_custom_nodes_directory()
assert bundle is not None
assert bundle.sha256 == directory_hash
assert bundle.remote_path == remote_path
assert bundle.uploaded is False
assert volume.put_file_calls == []
def test_sync_custom_nodes_directory_only_rebuilds_changed_top_level_archive(
settings_module: Any,
sync_engine_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""Changing one custom_nodes package should only rebuild that package archive plus the manifest."""
monkeypatch.setattr(sync_engine_module, "modal", None)
custom_nodes_dir = tmp_path / "custom_nodes"
package_a = custom_nodes_dir / "example_a"
package_b = custom_nodes_dir / "example_b"
package_a.mkdir(parents=True)
package_b.mkdir(parents=True)
(package_a / "__init__.py").write_text("NODE_CLASS_MAPPINGS = {}\n", encoding="utf-8")
(package_b / "__init__.py").write_text("NODE_CLASS_MAPPINGS = {}\n", encoding="utf-8")
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="remote",
sync_custom_nodes=True,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=custom_nodes_dir,
)
first_engine = sync_engine_module.ModalAssetSyncEngine.from_environment(settings)
first_bundle = first_engine.sync_custom_nodes_directory()
assert first_bundle is not None
(package_b / "node.py").write_text("VALUE = 2\n", encoding="utf-8")
class NeverExistsVolume:
"""Volume double that forces all deterministic uploads through without indexed cache hits."""
def exists(self, remote_path: str) -> bool:
return False
def put_file(self, local_path: Path, remote_path: str) -> None:
return None
def put_bytes(self, payload: bytes, remote_path: str) -> None:
return None
second_engine = sync_engine_module.ModalAssetSyncEngine(
volume=NeverExistsVolume(),
settings=settings,
)
rebuilt_entries: list[str] = []
original_create_archive = second_engine._create_archive_from_files
def record_create_archive(root_path: Path, files: list[Path], archive_path: Path) -> Path:
"""Record which top-level package archive had to be rebuilt."""
del root_path
rebuilt_entries.append(files[0].relative_to(custom_nodes_dir).parts[0])
return original_create_archive(custom_nodes_dir, files, archive_path)
monkeypatch.setattr(second_engine, "_create_archive_from_files", record_create_archive)
second_bundle = second_engine.sync_custom_nodes_directory()
assert second_bundle is not None
assert second_bundle.sha256 != first_bundle.sha256
assert rebuilt_entries == ["example_b"]
def test_sync_custom_nodes_directory_builds_multiple_archives_in_parallel(
settings_module: Any,
sync_engine_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""Fresh per-package custom_nodes archives should build in parallel."""
monkeypatch.setattr(sync_engine_module, "modal", None)
custom_nodes_dir = tmp_path / "custom_nodes"
package_a = custom_nodes_dir / "example_a"
package_b = custom_nodes_dir / "example_b"
package_a.mkdir(parents=True)
package_b.mkdir(parents=True)
(package_a / "__init__.py").write_text("NODE_CLASS_MAPPINGS = {}\n", encoding="utf-8")
(package_b / "__init__.py").write_text("NODE_CLASS_MAPPINGS = {}\n", encoding="utf-8")
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="remote",
sync_custom_nodes=True,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=custom_nodes_dir,
)
engine = sync_engine_module.ModalAssetSyncEngine.from_environment(settings)
original_create_archive = engine._create_archive_from_files
thread_ids: set[int] = set()
started_count = 0
started_lock = threading.Lock()
overlap_event = threading.Event()
def record_create_archive(root_path: Path, files: list[Path], archive_path: Path) -> Path:
"""Block briefly until two archive builds overlap so the test can observe parallel execution."""
nonlocal started_count
del root_path
with started_lock:
started_count += 1
thread_ids.add(threading.get_ident())
if started_count >= 2:
overlap_event.set()
assert overlap_event.wait(0.2), "Expected per-package archive builds to overlap."
time.sleep(0.02)
return original_create_archive(custom_nodes_dir, files, archive_path)
monkeypatch.setattr(engine, "_create_archive_from_files", record_create_archive)
bundle = engine.sync_custom_nodes_directory()
assert bundle is not None
assert len(thread_ids) >= 2
def test_remote_mode_uses_modal_volume_backend_when_sdk_is_available(
settings_module: Any,
sync_engine_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""Remote execution mode should upload into a real Modal volume when the SDK is available."""
class FakeBatch:
"""Capture files uploaded through Modal batch_upload."""
def __init__(self, uploads: list[tuple[Any, str]]) -> None:
"""Store uploaded file references."""
self.uploads = uploads
def __enter__(self) -> "FakeBatch":
"""Return the active batch context."""
return self
def __exit__(self, exc_type: Any, exc: Any, tb: Any) -> None:
"""Close the fake batch context."""
return None
def put_file(self, source: Any, remote_path: str) -> None:
"""Record the uploaded file or bytes payload."""
self.uploads.append((source, remote_path))
class FakeVolume:
"""Minimal Modal volume double."""
def __init__(self) -> None:
"""Initialize the fake upload state."""
self.paths: set[str] = set()
self.uploads: list[tuple[Any, str]] = []
def listdir(self, remote_path: str, recursive: bool = False) -> list[str]:
"""Return a non-empty listing when the path has already been uploaded."""
return [remote_path] if remote_path in self.paths else []
def batch_upload(self) -> FakeBatch:
"""Return a fake batch uploader."""
return FakeBatch(self.uploads)
fake_volume = FakeVolume()
class FakeModal:
"""Minimal modal SDK double that returns a stable volume handle."""
class Dict:
"""Namespace for sync-index lookups."""
@staticmethod
def from_name(name: str, create_if_missing: bool = False) -> dict[str, Any]:
"""Return a plain dict-backed sync index."""
del name, create_if_missing
return {}
class Volume:
"""Namespace for volume lookups."""
@staticmethod
def from_name(name: str, create_if_missing: bool = False) -> FakeVolume:
"""Return the fake volume for any lookup."""
return fake_volume
monkeypatch.setattr(sync_engine_module, "modal", FakeModal)
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="remote",
sync_custom_nodes=True,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=None,
)
engine = sync_engine_module.ModalAssetSyncEngine.from_environment(settings)
assert type(engine.volume).__name__ == "ModalVolumeBackend"
assert type(engine.sync_index).__name__ == "ModalDictSyncIndex"
asset_path = tmp_path / "encoder.safetensors"
asset_path.write_bytes(b"weights")
synced = engine.sync_file(asset_path)
uploaded_remote_paths = [remote_path for _, remote_path in fake_volume.uploads]
assert synced.remote_path in uploaded_remote_paths
assert all(not remote_path.startswith("/hashes/") for remote_path in uploaded_remote_paths)
def test_remote_sync_index_discards_stale_volume_epoch_and_reuploads_missing_payloads(
settings_module: Any,
sync_engine_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""A fresh volume should ignore stale sync-index records from an older volume epoch."""
class FakeBatch:
"""Capture files uploaded through Modal batch_upload."""
def __init__(self, volume: "FakeVolume") -> None:
"""Store the backing volume for uploaded-path tracking."""
self.volume = volume
def __enter__(self) -> "FakeBatch":
"""Return the active batch context."""
return self
def __exit__(self, exc_type: Any, exc: Any, tb: Any) -> None:
"""Close the fake batch context."""
return None
def put_file(self, source: Any, remote_path: str) -> None:
"""Record the uploaded remote path as present in the fake volume."""
del source
self.volume.paths.add(remote_path)
self.volume.uploads.append(remote_path)
class FakeVolume:
"""Minimal Modal volume double with listdir accounting."""
def __init__(self) -> None:
"""Initialize fake storage state."""
self.paths: set[str] = set()
self.uploads: list[str] = []
def listdir(self, remote_path: str, recursive: bool = False) -> list[str]:
"""Return a listing for known paths."""
del recursive
return [remote_path] if remote_path in self.paths else []
def batch_upload(self) -> FakeBatch:
"""Return a fake uploader."""
return FakeBatch(self)
fake_volume = FakeVolume()
fake_dict: dict[str, Any] = {}
class FakeModal:
"""Minimal Modal SDK double exposing both Volume and Dict backends."""
exception = type(
"FakeExceptionNamespace",
(),
{
"NotFoundError": FileNotFoundError,
"ResourceExhaustedError": RuntimeError,
},
)
class Dict:
"""Namespace for sync-index lookups."""
@staticmethod
def from_name(name: str, create_if_missing: bool = False) -> dict[str, Any]:
"""Return the shared fake dict store for any lookup."""
del name, create_if_missing
return fake_dict
class Volume:
"""Namespace for volume lookups."""
@staticmethod
def from_name(name: str, create_if_missing: bool = False) -> FakeVolume:
"""Return the fake volume for any lookup."""
del name, create_if_missing
return fake_volume
monkeypatch.setattr(sync_engine_module, "modal", FakeModal)
custom_nodes_dir = tmp_path / "custom_nodes"
package_dir = custom_nodes_dir / "example"
package_dir.mkdir(parents=True)
(package_dir / "__init__.py").write_text("NODE_CLASS_MAPPINGS = {}\n", encoding="utf-8")
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="remote",
sync_custom_nodes=True,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=custom_nodes_dir,
)
engine = sync_engine_module.ModalAssetSyncEngine.from_environment(settings)
entry_hash = engine._hash_directory(package_dir)
fake_dict[f"{settings.volume_name}:current_volume_epoch"] = {
"epoch": "stale-epoch",
"remote_path": "/sync_index_epochs/stale-epoch.json",
"sentinel_path": "/sync_index_epochs/stale-epoch.json",
}
fake_dict[
f"{settings.volume_name}:epoch:stale-epoch:custom_nodes_entry:example:{entry_hash}"
] = {
"remote_path": engine._custom_nodes_archive_remote_path("example", entry_hash),
"source": str(package_dir),
}
bundle = engine.sync_custom_nodes_directory()
assert bundle is not None
assert bundle.uploaded is True
assert any(path.startswith("/sync_index_epochs/") for path in fake_volume.uploads)
assert any(path.startswith("/custom_nodes/entries/example/") for path in fake_volume.uploads)
assert fake_dict[f"{settings.volume_name}:current_volume_epoch"]["epoch"] != "stale-epoch"
def test_modal_volume_backend_treats_missing_path_as_cache_miss(
sync_engine_module: Any,
monkeypatch: Any,
) -> None:
"""A missing Modal volume path should behave like a normal absent marker file."""
class FakeNotFoundError(Exception):
"""Stand-in for modal.exception.NotFoundError."""
class FakeVolume:
"""Minimal Modal volume double that raises on missing listdir."""
def listdir(self, remote_path: str, recursive: bool = False) -> list[str]:
"""Simulate Modal's missing-path behavior."""
raise FakeNotFoundError(remote_path)
class FakeModal:
"""Minimal modal SDK double exposing the exception namespace."""
exception = type("FakeExceptionNamespace", (), {"NotFoundError": FakeNotFoundError})
class Volume:
"""Namespace for volume lookups."""
@staticmethod
def from_name(name: str, create_if_missing: bool = False) -> FakeVolume:
"""Return a fake volume that always reports missing paths."""
return FakeVolume()
monkeypatch.setattr(sync_engine_module, "modal", FakeModal)
backend = sync_engine_module.ModalVolumeBackend("volume")
assert backend.exists("/hashes/missing.done") is False
def test_modal_volume_backend_caches_exists_results_and_uploaded_paths(
sync_engine_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""Repeated existence checks for the same path should avoid repeated Modal metadata calls."""
class FakeBatch:
"""Capture one uploaded path."""
def __init__(self, volume: "FakeVolume") -> None:
"""Store the backing volume."""
self.volume = volume
def __enter__(self) -> "FakeBatch":
"""Return the active batch context."""
return self
def __exit__(self, exc_type: Any, exc: Any, tb: Any) -> None:
"""Close the fake batch context."""
return None
def put_file(self, source: Any, remote_path: str) -> None:
"""Record the uploaded path as present."""
self.volume.paths.add(remote_path)
class FakeVolume:
"""Minimal Modal volume double with listdir accounting."""
def __init__(self) -> None:
"""Initialize fake storage state."""
self.paths: set[str] = set()
self.listdir_calls = 0
def listdir(self, remote_path: str, recursive: bool = False) -> list[str]:
"""Return a listing for known paths while counting calls."""
self.listdir_calls += 1
return [remote_path] if remote_path in self.paths else []
def batch_upload(self) -> FakeBatch:
"""Return a fake uploader."""
return FakeBatch(self)
fake_volume = FakeVolume()
class FakeModal:
"""Minimal modal SDK double exposing a fake volume."""
exception = type(
"FakeExceptionNamespace",
(),
{
"NotFoundError": FileNotFoundError,
},
)
class Volume:
"""Namespace for volume lookups."""
@staticmethod
def from_name(name: str, create_if_missing: bool = False) -> FakeVolume:
"""Return the fake volume for any lookup."""
return fake_volume
monkeypatch.setattr(sync_engine_module, "modal", FakeModal)
backend = sync_engine_module.ModalVolumeBackend("volume")
assert backend.exists("/hashes/present.done") is False
assert backend.exists("/hashes/present.done") is False
assert fake_volume.listdir_calls == 1
local_path = tmp_path / "marker.txt"
local_path.write_text("marker", encoding="utf-8")
backend.put_file(local_path, "/hashes/present.done")
assert backend.exists("/hashes/present.done") is True
assert fake_volume.listdir_calls == 1
def test_modal_volume_backend_ignores_file_exists_upload_race(
sync_engine_module: Any,
monkeypatch: Any,
tmp_path: Path,
) -> None:
"""Content-addressed Modal uploads should be idempotent when the path already exists remotely."""
class FakeBatch:
"""Raise the same collision Modal raises when closing a duplicate upload batch."""
def __enter__(self) -> "FakeBatch":
"""Return the active batch context."""
return self
def __exit__(self, exc_type: Any, exc: Any, tb: Any) -> None:
"""Surface the duplicate remote file at batch close."""
raise FileExistsError("/custom_nodes/entries/package/hash_custom_nodes_bundle.zip")
def put_file(self, source: Any, remote_path: str) -> None:
"""Accept the upload request before the batch close detects the duplicate."""
del source, remote_path
class FakeVolume:
"""Minimal Modal volume double with duplicate-upload behavior."""
def __init__(self) -> None:
"""Initialize fake storage state."""
self.listdir_calls = 0
def listdir(self, remote_path: str, recursive: bool = False) -> list[str]:
"""Return a listing for known paths while counting calls."""
del recursive
self.listdir_calls += 1
return [remote_path]
def batch_upload(self) -> FakeBatch:
"""Return a fake uploader."""
return FakeBatch()
fake_volume = FakeVolume()
class FakeModal:
"""Minimal modal SDK double exposing a duplicate-prone fake volume."""
exception = type(
"FakeExceptionNamespace",
(),
{
"NotFoundError": FileNotFoundError,
},
)
class Volume:
"""Namespace for volume lookups."""
@staticmethod
def from_name(name: str, create_if_missing: bool = False) -> FakeVolume:
"""Return the fake volume for any lookup."""
del name, create_if_missing
return fake_volume
monkeypatch.setattr(sync_engine_module, "modal", FakeModal)
backend = sync_engine_module.ModalVolumeBackend("volume")
local_path = tmp_path / "bundle.zip"
local_path.write_bytes(b"bundle")
backend.put_file(local_path, "/custom_nodes/entries/package/hash_custom_nodes_bundle.zip")
backend.put_bytes(b"{}", "/custom_nodes/manifests/hash_manifest.json")
assert backend.exists("/custom_nodes/entries/package/hash_custom_nodes_bundle.zip") is True
assert backend.exists("/custom_nodes/manifests/hash_manifest.json") is True
assert fake_volume.listdir_calls == 0
def test_modal_volume_backend_retries_rate_limited_calls(
sync_engine_module: Any,
monkeypatch: Any,
) -> None:
"""Transient Modal rate limiting should back off and retry instead of failing immediately."""
class FakeResourceExhaustedError(Exception):
"""Stand-in for modal.exception.ResourceExhaustedError."""
class FakeVolume:
"""Minimal Modal volume double that rate limits once."""
def __init__(self) -> None:
"""Initialize the listdir attempt counter."""
self.listdir_calls = 0
def listdir(self, remote_path: str, recursive: bool = False) -> list[str]:
"""Raise once, then succeed."""
self.listdir_calls += 1
if self.listdir_calls == 1:
raise FakeResourceExhaustedError("rate limited")
return [remote_path]
fake_volume = FakeVolume()
class FakeModal:
"""Minimal modal SDK double exposing retryable error types."""
exception = type(
"FakeExceptionNamespace",
(),
{
"NotFoundError": FileNotFoundError,
"ResourceExhaustedError": FakeResourceExhaustedError,
},
)
class Volume:
"""Namespace for volume lookups."""
@staticmethod
def from_name(name: str, create_if_missing: bool = False) -> FakeVolume:
"""Return the fake volume for any lookup."""
return fake_volume
monotonic_time = 100.0
sleep_calls: list[float] = []
def fake_monotonic() -> float:
"""Return the controllable monotonic clock."""
return monotonic_time
def fake_sleep(seconds: float) -> None:
"""Advance the controllable monotonic clock instead of actually sleeping."""
nonlocal monotonic_time
sleep_calls.append(seconds)
monotonic_time += seconds
monkeypatch.setattr(sync_engine_module, "modal", FakeModal)
monkeypatch.setattr(
sync_engine_module,
"time",
types.SimpleNamespace(sleep=fake_sleep, monotonic=fake_monotonic),
)
backend = sync_engine_module.ModalVolumeBackend("volume")
assert backend.exists("/hashes/present.done") is True
assert fake_volume.listdir_calls == 2
assert 0.25 in sleep_calls
def test_modal_volume_backend_applies_shared_rate_limit_backoff_across_calls(
sync_engine_module: Any,
monkeypatch: Any,
) -> None:
"""One rate-limited Modal volume call should publish a shared backoff window for later calls."""
class FakeVolume:
"""Minimal Modal volume double that always succeeds."""
def listdir(self, remote_path: str, recursive: bool = False) -> list[str]:
"""Return one successful listing."""
return [remote_path]
fake_volume = FakeVolume()
class FakeModal:
"""Minimal modal SDK double exposing retryable error types."""
exception = type(
"FakeExceptionNamespace",
(),
{
"NotFoundError": FileNotFoundError,
"ResourceExhaustedError": RuntimeError,
},
)
class Volume:
"""Namespace for volume lookups."""
@staticmethod
def from_name(name: str, create_if_missing: bool = False) -> FakeVolume:
"""Return the fake volume for any lookup."""
return fake_volume
monotonic_time = 100.0
sleep_calls: list[float] = []
def fake_monotonic() -> float:
"""Return the controllable monotonic clock."""
return monotonic_time
def fake_sleep(seconds: float) -> None:
"""Advance the controllable monotonic clock instead of actually sleeping."""
nonlocal monotonic_time
sleep_calls.append(seconds)
monotonic_time += seconds
monkeypatch.setattr(sync_engine_module, "modal", FakeModal)
monkeypatch.setattr(
sync_engine_module,
"time",
types.SimpleNamespace(sleep=fake_sleep, monotonic=fake_monotonic),
)
backend = sync_engine_module.ModalVolumeBackend("volume")
assert backend._record_shared_rate_limit_backoff() == 0.25
assert backend.exists("/hashes/second.done") is True
assert 0.25 in sleep_calls
def test_cancellable_backend_interruption_becomes_sync_cancellation(
settings_module: Any,
sync_engine_module: Any,
tmp_path: Path,
) -> None:
"""An interrupted transport should stop queue-time sync without indexing it."""
asset_path = tmp_path / "model.safetensors"
asset_path.write_bytes(b"model")
class CancellableVolume:
"""Expose an upload that reports prompt cancellation."""
def exists(self, remote_path: str) -> bool:
"""Report empty storage."""
del remote_path
return False
def put_file(self, local_path: Path, remote_path: str) -> None:
"""Reject the non-cancellable path."""
del local_path, remote_path
raise AssertionError("cancellable upload path was not used")
def put_file_cancellable(
self,
local_path: Path,
remote_path: str,
*,
cancellation_check: Any,
) -> None:
"""Report that the active transport was interrupted."""
del local_path, remote_path
raise InterruptedError("cancelled")
def put_bytes(self, payload: bytes, remote_path: str) -> None:
"""Accept protocol-required byte writes."""
del payload, remote_path
settings = settings_module.ModalSyncSettings(
app_name="app",
auto_deploy=True,
allow_ephemeral_fallback=False,
enable_memory_snapshot=True,
enable_gpu_memory_snapshot=False,
execution_mode="vast",
sync_custom_nodes=False,
volume_name="volume",
route_path="/modal/queue_prompt",
marker_property="is_modal_remote",
local_storage_root=tmp_path / "storage",
remote_storage_root="/storage",
custom_nodes_archive_name="custom_nodes_bundle.zip",
comfyui_root=None,
custom_nodes_dir=None,
)
engine = sync_engine_module.ModalAssetSyncEngine(
volume=CancellableVolume(),
settings=settings,
cancellation_check=lambda: False,
)
with pytest.raises(sync_engine_module.SyncCancelledError, match="cancelled"):
engine._sync_content_addressed_file(
local_path=asset_path,
remote_path="assets/model.safetensors",
sync_key="test-key",
source_description=str(asset_path),
)