Archiver is a service which is used to fetch data on-chain data and present them in a nice-to-consume form. The on-chain data specifically are the following events:
-
L2BlockProposedevent emitted on Rollup contract, -
MessageAddedevent emitted on Inbox contract,
The interfaces defining how the data can be consumed from the archiver are L2BlockSource, L2LogsSource and ContractDataSource.
To install dependencies and build the package run yarn install followed by yarn build.
To run test execute yarn test.
To start the service export ETHEREUM_HOST (defaults to http://127.0.0.1:8545/), ARCHIVER_POLLING_INTERVAL_MS (defaults to 1000 ms), ROLLUP_CONTRACT_ADDRESS, INBOX_CONTRACT_ADDRESS environmental variables and start the service with yarn start.