Crate hypersync_schema 

HyperSync Schema

Apache Arrow schemas and data transformation utilities for the HyperSync protocol.

This crate provides the Arrow schema definitions and data transformation utilities used by HyperSync for high-performance columnar data processing. It bridges the gap between HyperSync’s native data formats and Apache Arrow.

Features

• Arrow schemas: Predefined schemas for blocks, transactions, logs, and traces
• Data transformation: Utilities for converting between formats
• High performance: Optimized columnar data operations
• Schema projection: Select only needed columns for memory efficiency

Key Functions

• [block_schema()] - Get Arrow schema for block data
• [transaction_schema()] - Get Arrow schema for transaction data
• [log_schema()] - Get Arrow schema for log/event data
• [trace_schema()] - Get Arrow schema for trace data
• project_schema() - Project schema to subset of columns
• concat_chunks() - Efficiently concatenate Arrow chunks

Example

use hypersync_schema::{transaction, log, project_schema};
use std::collections::BTreeSet;

// Get schema for transaction data
let tx_schema = transaction();
println!("Transaction schema has {} fields", tx_schema.fields.len());

// Get schema for log data  
let log_schema = log();
println!("Log schema has {} fields", log_schema.fields.len());

// Project to subset of fields
let fields: BTreeSet<String> = ["hash", "from"].iter().map(|s| s.to_string()).collect();
let projected = project_schema(&tx_schema, &fields);
println!("Projected schema has {} fields", projected.fields.len());

Functions

block_header

concat_chunks

empty_chunk

log

project_schema

trace

transaction

Type Aliases

ArrowChunk