presidio_nlp_engine_config.py

from typing import Tuple
import logging
import spacy
from presidio_analyzer import RecognizerRegistry
from presidio_analyzer.nlp_engine import NlpEngine, NlpEngineProvider

logger = logging.getLogger("presidio-streamlit")


def create_nlp_engine_with_spacy(
    model_path: str,
) -> Tuple[NlpEngine, RecognizerRegistry]:
    """
    Instantiate an NlpEngine with a spaCy model
    :param model_path: spaCy model path.
    """
    registry = RecognizerRegistry()
    registry.load_predefined_recognizers()

    if not spacy.util.is_package(model_path):
        spacy.cli.download(model_path)

    nlp_configuration = {
        "nlp_engine_name": "spacy",
        "models": [{"lang_code": "en", "model_name": model_path}],
    }

    nlp_engine = NlpEngineProvider(nlp_configuration=nlp_configuration).create_engine()

    return nlp_engine, registry


def create_nlp_engine_with_transformers(
    model_path: str,
) -> Tuple[NlpEngine, RecognizerRegistry]:
    """
    Instantiate an NlpEngine with a TransformersRecognizer and a small spaCy model.
    The TransformersRecognizer would return results from Transformers models, the spaCy model
    would return NlpArtifacts such as POS and lemmas.
    :param model_path: HuggingFace model path.
    """

    from transformers_rec import (
        STANFORD_COFIGURATION,
        BERT_DEID_CONFIGURATION,
        TransformersRecognizer,
    )

    registry = RecognizerRegistry()
    registry.load_predefined_recognizers()

    if not spacy.util.is_package("en_core_web_sm"):
        spacy.cli.download("en_core_web_sm")
    # Using a small spaCy model + a HF NER model
    transformers_recognizer = TransformersRecognizer(model_path=model_path)

    if model_path == "StanfordAIMI/stanford-deidentifier-base":
        transformers_recognizer.load_transformer(**STANFORD_COFIGURATION)
    elif model_path == "obi/deid_roberta_i2b2":
        transformers_recognizer.load_transformer(**BERT_DEID_CONFIGURATION)
    else:
        print(f"Warning: Model has no configuration, loading default.")
        transformers_recognizer.load_transformer(**BERT_DEID_CONFIGURATION)

    # Use small spaCy model, no need for both spacy and HF models
    # The transformers model is used here as a recognizer, not as an NlpEngine
    nlp_configuration = {
        "nlp_engine_name": "spacy",
        "models": [{"lang_code": "en", "model_name": "en_core_web_sm"}],
    }

    registry.add_recognizer(transformers_recognizer)
    registry.remove_recognizer("SpacyRecognizer")

    nlp_engine = NlpEngineProvider(nlp_configuration=nlp_configuration).create_engine()

    return nlp_engine, registry


def create_nlp_engine_with_flair(
    model_path: str,
) -> Tuple[NlpEngine, RecognizerRegistry]:
    """
    Instantiate an NlpEngine with a FlairRecognizer and a small spaCy model.
    The FlairRecognizer would return results from Flair models, the spaCy model
    would return NlpArtifacts such as POS and lemmas.
    :param model_path: Flair model path.
    """
    from flair_recognizer import FlairRecognizer

    registry = RecognizerRegistry()
    registry.load_predefined_recognizers()

    if not spacy.util.is_package("en_core_web_sm"):
        spacy.cli.download("en_core_web_sm")
    # Using a small spaCy model + a Flair NER model
    flair_recognizer = FlairRecognizer(model_path=model_path)
    nlp_configuration = {
        "nlp_engine_name": "spacy",
        "models": [{"lang_code": "en", "model_name": "en_core_web_sm"}],
    }
    registry.add_recognizer(flair_recognizer)
    registry.remove_recognizer("SpacyRecognizer")

    nlp_engine = NlpEngineProvider(nlp_configuration=nlp_configuration).create_engine()

    return nlp_engine, registry


def create_nlp_engine_with_azure_text_analytics(ta_key: str, ta_endpoint: str):
    """
    Instantiate an NlpEngine with a TextAnalyticsWrapper and a small spaCy model.
    The TextAnalyticsWrapper would return results from calling Azure Text Analytics PII, the spaCy model
    would return NlpArtifacts such as POS and lemmas.
    :param ta_key: Azure Text Analytics key.
    :param ta_endpoint: Azure Text Analytics endpoint.
    """
    from text_analytics_wrapper import TextAnalyticsWrapper

    if not ta_key or not ta_endpoint:
        raise RuntimeError("Please fill in the Text Analytics endpoint details")

    registry = RecognizerRegistry()
    registry.load_predefined_recognizers()

    ta_recognizer = TextAnalyticsWrapper(ta_endpoint=ta_endpoint, ta_key=ta_key)
    nlp_configuration = {
        "nlp_engine_name": "spacy",
        "models": [{"lang_code": "en", "model_name": "en_core_web_sm"}],
    }

    nlp_engine = NlpEngineProvider(nlp_configuration=nlp_configuration).create_engine()

    registry.add_recognizer(ta_recognizer)
    registry.remove_recognizer("SpacyRecognizer")

    return nlp_engine, registry