feat: add command to download models from HF

robotoff/cli/triton.py

@@ -68,3 +68,13 @@ def unload_model(model_name: str):
     typer.echo("Done.")
     typer.echo("**Current models (after) **")
     list_models()
+
+
+@app.command()
+def download_models():
+    """Download all models."""
+    from robotoff import triton
+    from robotoff.utils import get_logger
+
+    get_logger()
+    triton.download_models()

robotoff/triton.py

@@ -1,13 +1,18 @@
 import functools
 import json
+import shutil
 import struct
+import tempfile
+from pathlib import Path
 
 import grpc
 import numpy as np
 from google.protobuf.json_format import MessageToJson
+from huggingface_hub import snapshot_download
 from more_itertools import chunked
 from openfoodfacts.types import JSONType
 from PIL import Image
+from pydantic import BaseModel
 from transformers import CLIPImageProcessor
 from tritonclient.grpc import service_pb2, service_pb2_grpc
 from tritonclient.grpc.service_pb2_grpc import GRPCInferenceServiceStub
@@ -24,6 +29,30 @@
 # Get model config: /v2/models/{MODEL_NAME}/config
 
 
+class HuggingFaceModel(BaseModel):
+    name: str
+    version: int
+    repo_id: str
+    subfolder: str = "onnx"
+    revision: str = "main"
+
+
+HUGGINGFACE_MODELS = [
+    HuggingFaceModel(
+        name="nutrition_extractor",
+        version=1,
+        repo_id="openfoodfacts/nutrition-extractor",
+        revision="dea426bf3c3d289ad7b65d29a7744ea6851632a6",
+    ),
+    HuggingFaceModel(
+        name="nutrition_extractor",
+        version=2,
+        repo_id="openfoodfacts/nutrition-extractor",
+        revision="7a43f38725f50f37a8c7bce417fc75741bea49fe",
+    ),
+]
+
+
 @functools.cache
 def get_triton_inference_stub(
     triton_uri: str | None = None,
@@ -264,3 +293,34 @@ def get_model_config(
 
     response = triton_stub.ModelConfig(request)
     return response.config
+
+
+def download_models():
+    """Downloading all models from Hugging Face Hub.
+
+    The models are downloaded in the Triton models directory. If the model
+    already exists, it is not downloaded.
+    """
+    for model in HUGGINGFACE_MODELS:
+        base_model_dir = settings.TRITON_MODELS_DIR / model.name
+        base_model_dir.mkdir(parents=True, exist_ok=True)
+        model_with_version_dir = base_model_dir / str(model.version) / "model.onnx"
+
+        if model_with_version_dir.exists():
+            logger.info(
+                f"Model {model.name} version {model.version} already downloaded"
+            )
+            continue
+
+        with tempfile.TemporaryDirectory() as temp_dir_str:
+            logger.info(f"Temporary cache directory: {temp_dir_str}")
+            temp_dir = Path(temp_dir_str)
+            snapshot_download(
+                repo_id=model.repo_id,
+                allow_patterns=[f"{model.subfolder}/*"],
+                revision=model.revision,
+                local_dir=temp_dir,
+            )
+            model_with_version_dir.parent.mkdir(parents=True, exist_ok=True)
+            logger.info(f"Copying model files to {model_with_version_dir}")
+            shutil.move(temp_dir / model.subfolder, model_with_version_dir)