config.yaml

# Project name and description
project_name: "cherry_event_indexer"
description: "Cherry event indexing and data processing pipeline"

# Data source configuration
data_source:
  - kind: hypersync
    url: "https://eth.hypersync.xyz"
    token: ${HYPERSYNC_API_TOKEN}

# Streams configuration
streams:
  - kind: block
    include_transactions: true
    include_logs: false
    column_cast:
      transaction:
        value: "String"
        block_number: "Int64"
    hex_encode:
      transaction: "Prefixed"
      block: null
      log: "HexEncode"
    hash: []  # process all blocks regardless of hash
    mapping: "polars"
    state:
      path: "state/block_stream.json"
      resume: true

  - kind: event
    name: "Approval"
    signature: "Approval(address indexed _owner, address indexed _spender, uint256 _value)"
    from_block: 21653123
    to_block: null
    batch_size: 500000
    topics: []
    address: []
    include_blocks: true
    include_transactions: false
    include_traces: false
    column_cast:
      value: "float64"  # Simple string value for single field
    mapping: "polars"
    state:
      path: "state/approval_stream.json"
      resume: true

  - kind: event
    name: "Transfer"
    signature: "Transfer(address indexed from, address indexed to, uint256 amount)"
    from_block: 21653123
    to_block: null
    batch_size: 1000000
    topics: []
    address: []
    include_blocks: true
    include_transactions: false
    include_traces: false
    column_cast:
      amount: "float64"
    mapping: "polars"
    state:
      path: "state/transfer_stream.json"
      resume: true

# Output configuration
output:
  - kind: s3
    endpoint: "localhost:9000"
    access_key: "minioadmin"
    secret_key: "minioadmin"
    bucket: "blockchain-data"
    secure: false
    region: null
    batch_size: 1000000

  - kind: local_parquet
    path: "data"
    compression: "snappy"
    batch_size: 500000

# Contracts configuration
contracts:
  identifier_signatures:
    - name: "ERC20_Approval"
      signature: "Approval(address indexed _owner, address indexed _spender, uint256 _value)"