mirror of
https://github.com/luxfi/node.git
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zeekay
7cf87b230b
The module already called itself github.com/luxfi/node while containing no node in Go: cmd/luxd was twenty-one lines that printed the size of a few types, and the Go column of the matrix measured a VM plugin. A repo that fetches the thing it claims to be has not replaced it, so the Go sources move in — 1515 files, the daemon and everything under it — and the build reaches outside this module for nothing. Rust and C++ sit beside it unchanged and are still measured against it by the differential. That is the point of one repo: the reference implementation and the two ports are the same checkout, so parity is a thing you can run rather than a thing you assert. Verified: builds, and the closure carries no lux-private — checked at build time rather than believed. The daemon starts twelve chains on a local network (P X C Q Z A B G K M F, plus D through its plugin) and reports healthy.
99 lines
2.4 KiB
Go
99 lines
2.4 KiB
Go
// Copyright (C) 2019-2025, Lux Industries Inc. All rights reserved.
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// See the file LICENSE for licensing terms.
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package message
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// Native ZAP wire for gossip messages: the struct IS the wire. Each message
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// is one zap object keyed by a 1-byte kind discriminator at object offset 0 —
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// the whole dispatch. Parse reads it and returns the typed message. There is
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// no codec, no version prefix, no slot map.
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//
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// Object fixed section (offsets object-relative, little-endian):
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//
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// kind u8 @ 0 tx=1
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// Tx bytes @ 1 ptr to the gossiped tx bytes (Tx only)
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import (
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"errors"
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"github.com/luxfi/ids"
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"github.com/luxfi/zap"
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)
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var (
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_ Message = (*Tx)(nil)
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// ErrUnknownMessageKind is returned when the 1-byte kind discriminator at
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// object offset 0 does not correspond to a known message type.
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ErrUnknownMessageKind = errors.New("unknown message kind")
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)
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// msgKind is the 1-byte discriminator at object offset 0 of every message
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// buffer. Parse reads it and dispatches to the typed message.
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type msgKind uint8
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const (
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msgKindReserved msgKind = iota
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msgKindTx
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)
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// Fixed wire offsets (object-relative) and object size for a Tx message.
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const (
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offMsgKind = 0
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offMsgTx = 1
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sizeMsgTx = 9 // kind(1) + bytes ptr(8)
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)
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type Message interface {
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// Handle this message with the correct message handler
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Handle(handler Handler, nodeID ids.NodeID, requestID uint32) error
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// initialize should be called whenever a message is built or parsed
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initialize([]byte)
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// Bytes returns the binary representation of this message
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//
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// Bytes should only be called after being initialized
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Bytes() []byte
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// marshal encodes the message to its native ZAP wire form (kind byte at
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// object offset 0). Each concrete type writes its own kind — this is the
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// whole dispatch, no codec.
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marshal() ([]byte, error)
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}
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type message []byte
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func (m *message) initialize(bytes []byte) {
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*m = bytes
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}
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func (m *message) Bytes() []byte {
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return *m
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}
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func Parse(bytes []byte) (Message, error) {
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zmsg, err := zap.Parse(bytes)
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if err != nil {
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return nil, err
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}
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obj := zmsg.Root()
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switch msgKind(obj.Uint8(offMsgKind)) {
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case msgKindTx:
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msg := &Tx{Tx: append([]byte(nil), obj.Bytes(offMsgTx)...)}
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msg.initialize(bytes)
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return msg, nil
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default:
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return nil, ErrUnknownMessageKind
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}
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}
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func Build(msg Message) ([]byte, error) {
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bytes, err := msg.marshal()
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if err != nil {
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return nil, err
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}
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msg.initialize(bytes)
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return bytes, nil
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}
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