add ModelManager

- ModelManager features
  - `load()` imports a spacy model created by DataManager
  - `metadata` dict exposes metadata the user should edit such as author, license, etc
  - `save()` saves changes (currently only the updated metadata can be changed)
  - `publish()` publishes the model to hugging face
- add `test_model_manager` notebook with example of use
- add `spacy-huggingface-hub` and `wheel` to dependencies

also

- refactor tests
  - simplify fixtures code in conftest.py
  - add `model_path` fixture to conftest.py that provides a trained spacy model
- pin ipywidgets<8.0.5 for now to avoid test failures in CI
  - looks like it is due to this change: jupyter-widgets/ipywidgets#3533

.github/workflows/ci.yml

@@ -10,10 +10,11 @@ on:
 
 jobs:
   test:
+    name: "${{ matrix.os }} :: ${{ matrix.python-version }}"
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04]
+        os: [ubuntu-latest]
         python-version: [3.9]
     steps:
     - name: Checkout repository
@@ -30,7 +31,7 @@ jobs:
     - name: Run pytest
       run: |
         cd moralization
-        python -m pytest -s --cov=. --cov-report=xml
+        python -m pytest -v -s --cov=. --cov-report=xml
     - name: Upload coverage
       uses: codecov/codecov-action@v3
       with:

moralization/model_manager.py

@@ -0,0 +1,101 @@
+import huggingface_hub
+import spacy_huggingface_hub
+import os
+import spacy
+from pathlib import Path
+from typing import Union, Optional, Dict, Any
+import tempfile
+import re
+import logging
+
+
+def _construct_wheel_path(model_path: Path, meta: Dict[str, Any]) -> Path:
+    full_name = f"{meta['lang']}_{meta['name']}-{meta['version']}"
+    return model_path / full_name / "dist" / f"{full_name}-py3-none-any.whl"
+
+
+def _make_valid_package_name(name: str) -> str:
+    # attempt to make name valid, throw exception if we fail
+    # https://packaging.python.org/en/latest/specifications/name-normalization
+    valid_name = re.sub(r"[-_.,<>!@#$%^&*()+ /?]+", "_", name).lower().strip("_")
+    if name != valid_name:
+        logging.warning(
+            f"'{name}' not a valid package name, using '{valid_name}' instead"
+        )
+    if (
+        re.match("^([A-Z0-9]|[A-Z0-9][A-Z0-9._-]*[A-Z0-9])$", valid_name, re.IGNORECASE)
+        is None
+    ):
+        raise ValueError(
+            "Invalid package name: Can only contain ASCII letters, numbers and underscore."
+        )
+    return valid_name
+
+
+class ModelManager:
+    """
+    Import, modify and publish models to hugging face.
+    """
+
+    _meta_keys_to_expose_to_user = [
+        "name",
+        "version",
+        "description",
+        "author",
+        "email",
+        "url",
+        "license",
+    ]
+
+    def __init__(self, model_path: Union[str, Path] = None):
+        self.load(model_path)
+
+    def load(self, model_path: Union[str, Path]):
+        """Load a spacy model from `model_path`."""
+        self.model_path = Path(model_path)
+        self.spacy_model = spacy.load(model_path)
+        self.metadata = {
+            k: self.spacy_model.meta.get(k, "")
+            for k in self._meta_keys_to_expose_to_user
+        }
+
+    def save(self):
+        """Save any changes made to the model metadata."""
+        self._update_metadata()
+        self.spacy_model.to_disk(self.model_path)
+
+    def publish(self, hugging_face_token: Optional[str] = None) -> Dict[str, str]:
+        """Publish the model to Hugging Face.
+
+        This requires a User Access Token from https://huggingface.co/
+
+        The token can either be passed via the `hugging_face_token` argument,
+        or it can be set via the `HUGGING_FACE_TOKEN` environment variable.
+
+        Args:
+            hugging_face_token (str, optional): Hugging Face User Access Token
+        Returns:
+            dict: URLs of the published model and the pip-installable wheel
+        """
+        self.save()
+        if hugging_face_token is None:
+            hugging_face_token = os.environ.get("HUGGING_FACE_TOKEN")
+        if hugging_face_token is None:
+            raise ValueError(
+                "API TOKEN required: pass as string or set the HUGGING_FACE_TOKEN environment variable."
+            )
+        huggingface_hub.login(token=hugging_face_token)
+        with tempfile.TemporaryDirectory() as tmpdir:
+            # convert model to a python package incl binary wheel
+            output_path = Path(tmpdir)
+            spacy.cli.package(self.model_path, output_path, create_wheel=True)
+            # push the package to hugging face
+            return spacy_huggingface_hub.push(
+                _construct_wheel_path(output_path, self.spacy_model.meta)
+            )
+
+    def _update_metadata(self):
+        self.metadata["name"] = _make_valid_package_name(self.metadata.get("name"))
+        for k, v in self.metadata.items():
+            if k in self.spacy_model.meta:
+                self.spacy_model.meta[k] = v

moralization/tests/conftest.py

@@ -1,31 +1,44 @@
 import pytest
 from moralization import input_data
+from moralization.data_manager import DataManager
 import pathlib
 
 
-def _data_path_fixture(dir_path):
-    @pytest.fixture
-    def _fixture():
-        return dir_path
+@pytest.fixture(scope="session")
+def data_dir():
+    return pathlib.Path(__file__).parents[1].resolve() / "data"
 
-    return _fixture
 
+@pytest.fixture(scope="session")
+def ts_file(data_dir):
+    return data_dir / "TypeSystem.xml"
 
-def _doc_dict_fixture(dir_path):
-    @pytest.fixture
-    def _fixture():
-        return input_data.InputOutput.read_data(dir_path)
 
-    return _fixture
+@pytest.fixture(scope="session")
+def data_file(data_dir):
+    return (
+        data_dir / "test_data-trimmed_version_of-Interviews-pos-SH-neu-optimiert-AW.xmi"
+    )
 
 
-dir_path = pathlib.Path(__file__).parents[1].resolve() / "data"
-data_dir = _data_path_fixture(dir_path)
-doc_dicts = _doc_dict_fixture(dir_path)
+@pytest.fixture(scope="session")
+def config_file(data_dir):
+    return data_dir / "config.cfg"
 
 
-ts_file = _data_path_fixture(dir_path / "TypeSystem.xml")
-data_file = _data_path_fixture(
-    dir_path / "test_data-trimmed_version_of-Interviews-pos-SH-neu-optimiert-AW.xmi"
-)
-config_file = _data_path_fixture(dir_path / "config.cfg")
+@pytest.fixture(scope="session")
+def model_path(data_dir, config_file, tmp_path_factory) -> pathlib.Path:
+    """
+    Returns a temporary path containing a trained model.
+    This is only created once and re-used for the entire pytest session.
+    """
+    dm = DataManager(data_dir)
+    dm.export_data_DocBin()
+    tmp_path = tmp_path_factory.mktemp("model")
+    dm.spacy_train(working_dir=tmp_path, config=config_file, n_epochs=1)
+    yield tmp_path / "output" / "model-best"
+
+
+@pytest.fixture
+def doc_dicts(data_dir):
+    return input_data.InputOutput.read_data(str(data_dir))

moralization/tests/test_model_manager.py

@@ -0,0 +1,100 @@
+from moralization.model_manager import ModelManager
+import spacy
+import pytest
+import spacy_huggingface_hub
+import huggingface_hub
+from typing import Any
+from pathlib import Path
+
+
+def test_model_manager_valid_path(model_path):
+    model = ModelManager(model_path)
+    assert model.spacy_model is not None
+    assert model.spacy_model.lang == "de"
+    assert model.spacy_model.path == model_path
+
+
+def test_model_manager_modify_metadata(model_path):
+    model = ModelManager(model_path)
+    # update metadata values and save model
+    keys = ["name", "version", "description", "author", "email", "url", "license"]
+    for key in keys:
+        model.metadata[key] = f"{key}"
+    model.save()
+    for key in keys:
+        assert model.metadata[key] == f"{key}"
+    # re-load model
+    model.load(model_path)
+    for key in keys:
+        assert model.metadata[key] == f"{key}"
+    # load model directly in spacy and check its meta has also been updated
+    nlp = spacy.load(model_path)
+    for key in keys:
+        assert nlp.meta[key] == f"{key}"
+
+
+def test_model_manager_modify_metadata_fixable_invalid_names(model_path):
+    model = ModelManager(model_path)
+    for invalid_name, valid_name in [("!hm & __OK?,...", "hm_ok"), ("Im - S", "im_s")]:
+        model.metadata["name"] = invalid_name
+        assert model.metadata["name"] == invalid_name
+        # name is made valid on call to save()
+        model.save()
+        assert model.metadata["name"] == valid_name
+        nlp = spacy.load(model_path)
+        assert nlp.meta["name"] == valid_name
+
+
+def test_model_manager_modify_metadata_unfixable_invalid_names(model_path):
+    model = ModelManager(model_path)
+    for unfixable_invalid_name in ["", "_", "ü"]:
+        model.metadata["name"] = unfixable_invalid_name
+        with pytest.raises(ValueError) as e:
+            model.save()
+        assert "invalid" in str(e.value).lower()
+
+
+def test_model_manager_publish_no_token(model_path, monkeypatch):
+    monkeypatch.delenv("HUGGING_FACE_TOKEN", raising=False)
+    model = ModelManager(model_path)
+    with pytest.raises(ValueError) as e:
+        model.publish()
+    assert "token" in str(e.value).lower()
+
+
+def test_model_manager_publish_invalid_token_env(model_path, monkeypatch):
+    monkeypatch.setenv("HUGGING_FACE_TOKEN", "invalid")
+    model = ModelManager(model_path)
+    with pytest.raises(ValueError) as e:
+        model.publish()
+    assert "token" in str(e.value).lower()
+
+
+def test_model_manager_publish_invalid_token_arg(model_path):
+    model = ModelManager(model_path)
+    with pytest.raises(ValueError) as e:
+        model.publish(hugging_face_token="invalid")
+    assert "token" in str(e.value).lower()
+
+
+def test_model_manager_publish_mock_push(model_path: Path, monkeypatch, tmp_path):
+    def mock_spacy_huggingface_hub_push(whl_path: Path):
+        whl_path.rename(tmp_path / whl_path.name)
+        return {}
+
+    # monkey patch spacy_huggingface_hub.push() to just move the supplied wheel to a temporary path
+    monkeypatch.setattr(spacy_huggingface_hub, "push", mock_spacy_huggingface_hub_push)
+
+    def do_nothing(*args: Any, **kwargs: Any) -> None:
+        return
+
+    # monkey patch huggingface_hub.login() to do nothing
+    monkeypatch.setattr(huggingface_hub, "login", do_nothing)
+
+    model = ModelManager(model_path)
+    # set name and version - these determine the name of the compiled wheel
+    model.metadata["name"] = "my_new_pipeline"
+    model.metadata["version"] = "1.2.3"
+    model.publish(hugging_face_token="abc123")
+    wheel_path = tmp_path / "de_my_new_pipeline-1.2.3-py3-none-any.whl"
+    assert wheel_path.is_file()