$ show steemit/steem
This repository implements the Steem blockchain node (steemd), a Delegated Proof-of-Stake (DPoS) consensus platform with social media features. The system processes transactions, maintains chain state via shared-memory (chainbase) or RocksDB (MIRA) backends, and exposes a JSON-RPC API for querying accounts, blocks, market history, and social features like follows and tags. It includes a plugin architecture (appbase) for modular functionality, with plugins for witness production, P2P networking, resource credits (RC), account history, market history, and more. The codebase is written in C++17 and relies heavily on the custom fc library for asynchronous I/O, cryptography, serialization, and reflection. The architecture is a monolithic node daemon with a plugin system. Key entry points are the steemd binary (programs/steemd/main.cpp) and the CLI wallet (programs/cli_wallet/main.cpp). Data flows from P2P network messages through the chain plugin to the database, with operations evaluated by evaluators and state changes persisted via chainbase or MIRA. External dependencies include Boost, OpenSSL, RocksDB, and secp256k1-zkp. The repository also contains extensive Python test scripts for API regression and integration testing. While the codebase is well-structured and demonstrates advanced C++ patterns (static_variant, multi-index containers, reflection), it shows signs of technical drift: legacy plugins coexist with appbase plugins, conditional compilation for SMT and MIRA features, and several FC_TODO comments indicating incomplete migrations. The fc library itself is a reusable foundation but tightly coupled to the project's threading model.
The LLM identified 4 files worth highlighting for reuse:
Provides a generic shared-memory database with undo/redo sessions, supporting multi-index containers. It is self-contained and could be extracted for any project needing a high-performance, transactional in-memory database with rollback capability.
Implements a RocksDB-backed multi-index container that mimics Boost.MultiIndex semantics. It is a reusable persistence layer for C++ applications requiring ordered indices with disk-based storage, demonstrating non-obvious skill in adapting Boost concepts to a key-value store.
Defines a compact asset symbol type with a numeric asset identifier (NAI) and Damm checksum validation. It is a self-contained, well-tested component that could be reused in any token system requiring human-readable, error-detecting asset identifiers.
Implements a static variant (discriminated union) with visitor pattern support, enabling type-safe polymorphism without virtual functions. It is a reusable utility for C++ projects that need efficient, stack-allocated variant types with compile-time dispatch.