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41 lines
1.5 KiB
Python
41 lines
1.5 KiB
Python
"""Loading logic for loading documents from a GCS file."""
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import tempfile
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from typing import List
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from langchain.docstore.document import Document
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from langchain.document_loaders.base import BaseLoader
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from langchain.document_loaders.unstructured import UnstructuredFileLoader
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class GCSFileLoader(BaseLoader):
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"""Loading logic for loading documents from GCS."""
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def __init__(self, project_name: str, bucket: str, blob: str):
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"""Initialize with bucket and key name."""
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self.bucket = bucket
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self.blob = blob
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self.project_name = project_name
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def load(self) -> List[Document]:
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"""Load documents."""
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try:
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from google.cloud import storage
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except ImportError:
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raise ValueError(
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"Could not import google-cloud-storage python package. "
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"Please it install it with `pip install google-cloud-storage`."
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)
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# Initialise a client
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storage_client = storage.Client(self.project_name)
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# Create a bucket object for our bucket
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bucket = storage_client.get_bucket(self.bucket)
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# Create a blob object from the filepath
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blob = bucket.blob(self.blob)
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with tempfile.TemporaryDirectory() as temp_dir:
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file_path = f"{temp_dir}/{self.blob}"
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# Download the file to a destination
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blob.download_to_filename(file_path)
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loader = UnstructuredFileLoader(file_path)
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return loader.load()
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