OlaOS Architecture

Olaos implements multiple services such as JONS-RPC server, data fetcher, sequencer, healthcheck, etc.

The entire project is divided into the following crates:

• basic-types

  • Some basic types used in the project are defined here.

  • This crate will not depend on other crates in the project.

• config

  • The configuration parameters used in the project are defined here.

  • /configuration

    • All configuration files are here, with a lower priority than environment variables.

• contracts

  • The system contract definition used in OlaOS and loading logic are here.

• dal

  • Data Access Layer in OlaOS.

  • Encapsulates the curl operations of the underlying database.

• etc

  • The currently used environment variables and compiled system contract code are here.

• health_check

  • Check whether each module is working properly.

• logs

  • Collect system logs when running.

• mempool

  • Implemented a mempool for incoming user transactions, from which the sequencer will select transactions to execute and generate blocks.

• ola_core

  • The core module of OlaOS, including the implementation of a JSON-RPC server, the core logic of sequencer and the abstract logic of mempool.

• state

  • Providing an in-memory database through the underlying rocksdb, which is used for OlaVM to read necessary information of current state.

• storage

  • Implemented storage read and write operations for OlaVM.

• types

  • Implemented most of OlaOS's data types, including transactions, blocks, etc.