mod.rs

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//! VSR (Viewstamped Replication) consensus wire types.
//!
//! All headers are exactly 256 bytes with `#[repr(C)]` layout. Size is
//! enforced at compile time. Deserialization is a pointer cast (zero-copy)
//! via `bytemuck::try_from_bytes`.
//!
//! ## Client-facing
//! - [`RequestHeader`] - client -> primary
//! - [`ReplyHeader`] - primary -> client
//! - [`GenericHeader`] - type-erased envelope for dispatch
//!
//! ## Replication (server-to-server)
//! - [`PrepareHeader`] - primary -> replicas (replicate operation)
//! - [`PrepareOkHeader`] - replica -> primary (acknowledge)
//! - [`CommitHeader`] - primary -> replicas (commit, header-only)
//!
//! ## View change (server-to-server)
//! - [`StartViewChangeHeader`] - replica suspects primary failure (header-only)
//! - [`DoViewChangeHeader`] - replica -> primary candidate (header-only)
//! - [`StartViewHeader`] - new primary -> all replicas (header-only)

mod command;
mod error;
mod header;
mod operation;
mod reply_result;

pub use command::Command2;
pub use error::ConsensusError;
pub use header::{
    CommitHeader, ConsensusHeader, DoViewChangeHeader, EvictionHeader, EvictionReason,
    GenericHeader, HEADER_SIZE, PrepareHeader, PrepareOkHeader, RESERVED_COMMAND_LEN,
    RepairPrepareHeader, RepairRangeReplyHeader, ReplyHeader, RequestHeader, RequestPreparesHeader,
    RequestStartViewHeader, SIZE_FIELD_OFFSET, StartViewChangeHeader, StartViewHeader,
    read_size_field,
};
pub use operation::Operation;
pub use reply_result::{RESULT_COUNT_LEN, RESULT_ENTRY_LEN, result_code, result_section_len};