Files

Purpose

This documentation exists to assist you in understanding and beginning to use the StreamingFast substreams-sink-files tool. The Substreams module paired with this tutorial is a basic example of the elements required for sinking blockchain data into files-based storage solutions.

Overview

The substreams-sink-files tool provides the ability to pipe data extracted from a blockchain to various types of files-based persistence solutions.

For example, you could extract all of the ERC20, ERC721, and ERC1155 transfers from the Ethereum blockchain and persist the data to a files-based store.

It supports CSV, and Parquet format. (for ProtoJSON, use substreams sink protojson command: ProtoJSON)

See substreams-sink-files README for details