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ChromaDB Data Pipes is a collection of tools to build data pipelines for Chroma DB, inspired by the Unix philosophy of " do one thing and do it well".

Roadmap:

  • ✅ Integration with LangChain 🦜🔗
  • 🚫 Integration with LlamaIndex 🦙
  • ✅ Support more than all-MiniLM-L6-v2 as embedding functions (head over to Embedding Processors for more info)
  • 🚫 Multimodal support
  • ♾️ Much more!

Installation

pip install chromadb-data-pipes

Usage

Get help:

cdp --help

.env Files

CDP supports loading environment variables from .env files. You can create a .env file in the root of your project (or from wherever you run CDP commands) and add environment-specific variables on new lines in the form of NAME=VALUE.

Example Use Cases

This is a short list of use cases to evaluate whether this is the right tool for your needs:

  • Importing large datasets from local documents (PDF, TXT, etc.), from HuggingFace, from local persisted Chroma DB or even another remote Chroma DB.
  • Exporting large dataset to HuggingFace or any other dataformat supported by the library (if your format is not supported, either implement it in a small function or open an issue)
  • Create a dataset from your data that you can share with others (including the embeddings)
  • Clone Collection with different embedding function, distance function, and other HNSW fine-tuning parameters
  • Re-embed documents in a collection with a different embedding function
  • Backup your data to a jsonl file
  • Use other existing unix or other tools to transform your data after exporting from or before importing into Chroma DB

Importing

Import data from HuggingFace Datasets to .jsonl file:

cdp ds-get "hf://tazarov/chroma-qna?split=train" > chroma-qna.jsonl

Import data from HuggingFace Datasets to Chroma DB Server:

The below command will import the train split of the given dataset to Chroma chroma-qna chroma-qna collection. The collection will be created if it does not exist and documents will be upserted.

cdp ds-get "hf://tazarov/chroma-qna?split=train" | cdp import "http://localhost:8000/chroma-qna" --upsert --create

Importing from a directory with PDF files into Local Persisted Chroma DB:

cdp imp pdf sample-data/papers/ | grep "2401.02412.pdf" | head -1 | cdp chunk -s 500 | cdp embed --ef default | cdp import "file://chroma-data/my-pdfs" --upsert --create

Note

The above command will import the first PDF file from the sample-data/papers/ directory, chunk it into 500 word chunks, embed each chunk and import the chunks to the my-pdfs collection in Chroma DB.

Exporting

Export data from Local Persisted Chroma DB to .jsonl file:

The below command will export the first 10 documents from the chroma-qna collection to chroma-qna.jsonl file.

cdp export "file://chroma-data/chroma-qna" --limit 10 > chroma-qna.jsonl

Export data from Local Persisted Chroma DB to .jsonl file with filter:

The below command will export data from local persisted Chroma DB to a .jsonl file using a where filter to select the documents to export.

cdp export "file://chroma-data/chroma-qna" --where '{"document_id": "123"}' > chroma-qna.jsonl

Export data from Chroma DB Server to HuggingFace Datasets:

The below command will export the first 10 documents with offset 10 from the chroma-qna collection to HuggingFace Datasets tazarov/chroma-qna dataset. The dataset will be uploaded to HF.

Note

Make sure you have HF_TOKEN=hf_.... environment variable set. If you want your dataset to be private, add --private flag to the cdp ds-put command.

cdp export "http://localhost:8000/chroma-qna" --limit 10 --offset 10 | cdp ds-put "hf://tazarov/chroma-qna-modified"

To export a dataset to a file, use --uri with file:// prefix:

cdp export "http://localhost:8000/chroma-qna" --limit 10 --offset 10 | cdp ds-put "file://chroma-qna"

Note

The file is relative to the current working directory.

Processing

Copy collection from one Chroma collection to another and re-embed the documents:

cdp export "http://localhost:8000/chroma-qna" | cdp embed --ef default | cdp import "http://localhost:8000/chroma-qna-def-emb" --upsert --create

Embeddings Processor

See Embedding Processors for more info about supported embedding functions.

Import dataset from HF to Local Persisted Chroma and embed the documents:

cdp ds-get "hf://tazarov/ds2?split=train" | cdp embed --ef default | cdp import "file://chroma-data/chroma-qna-def-emb-hf" --upsert --create

Chunk Large Documents:

cdp imp pdf sample-data/papers/ | grep "2401.02412.pdf" | head -1 | cdp chunk -s 500

Misc

Count the number of documents in a collection:

cdp export "http://localhost:8000/chroma-qna" | wc -l