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38 lines
2.0 KiB
Python
38 lines
2.0 KiB
Python
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from pathlib import Path
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from haystack import Pipeline
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from haystack.components.embedders import SentenceTransformersDocumentEmbedder
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from haystack.components.converters import PyPDFToDocument, TextFileToDocument
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from haystack.components.preprocessors import DocumentCleaner, DocumentSplitter
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from haystack.components.routers import FileTypeRouter, DocumentJoiner
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from haystack.components.writers import DocumentWriter
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from haystack.document_stores import InMemoryDocumentStore
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# Create components and an indexing pipeline that converts txt and pdf files to documents, cleans and splits them, and
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# indexes them for sparse and dense retrieval.
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p = Pipeline()
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p.add_component(instance=FileTypeRouter(mime_types=["text/plain", "application/pdf"]), name="file_type_router")
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p.add_component(instance=TextFileToDocument(), name="text_file_converter")
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p.add_component(instance=PyPDFToDocument(), name="pdf_file_converter")
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p.add_component(instance=DocumentJoiner(), name="joiner")
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p.add_component(instance=DocumentCleaner(), name="cleaner")
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p.add_component(instance=DocumentSplitter(split_by="sentence", split_length=250, split_overlap=30), name="splitter")
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p.add_component(
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instance=SentenceTransformersDocumentEmbedder(model_name_or_path="sentence-transformers/all-MiniLM-L6-v2"),
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name="embedder",
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)
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p.add_component(instance=DocumentWriter(document_store=InMemoryDocumentStore()), name="writer")
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p.connect("file_type_router.text/plain", "text_file_converter.sources")
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p.connect("file_type_router.application/pdf", "pdf_file_converter.sources")
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p.connect("text_file_converter.documents", "joiner.documents")
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p.connect("pdf_file_converter.documents", "joiner.documents")
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p.connect("joiner.documents", "cleaner.documents")
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p.connect("cleaner.documents", "splitter.documents")
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p.connect("splitter.documents", "embedder.documents")
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p.connect("embedder.documents", "writer.documents")
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# Take the current directory as input and run the pipeline
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result = p.run({"file_type_router": {"sources": list(Path(".").iterdir())}})
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