subgraph.yaml

# Subgraph composition is supported as of 1.3.0 spec version.
specVersion: 1.3.0
description: A subgraph that calculates the block time for each block.
schema:
  file: ./schema.graphql
dataSources:
  - kind: ethereum
    name: BlockDataSource
    network: mainnet
    source:
      # We are only using block data in the example, so an empty contract address is fine.
      address: "0x0000000000000000000000000000000000000000"

      # The same is true for ABI, an empty event is provided.
      abi: BlockDataSource

      # Randomly selected at a point of high activity on the network.
      startBlock: 10000000
    mapping:
      kind: ethereum/events
      apiVersion: 0.0.7
      language: wasm/assemblyscript
      entities:
        - BlockTime

      # We are only using block data in the example, so an empty event is fine.
      abis:
        - name: BlockDataSource
          file: ./abis/BlockDataSource.json
      blockHandlers:
        - handler: handleBlock
      file: ./src/mapping.ts