mirror of
https://github.com/luxfi/chains.git
synced 2026-09-24 00:26:00 +00:00
zeekay
6981a3cd6c
The lane that did this was killed before it could commit; the tree it left is green and is preserved here rather than lost. Root package 51.5% at the start of the day, 93.3% at its last checkpoint, 98.6% now, with cert, fhe, types and cmd/plugin all passing. Includes the fault-injection suite it was building when it stopped: a node that cannot read its state does not start, and one that cannot enumerate its registry does not either. Not reviewed by me beyond build, vet, gofmt and the full suite under -count=1. The lane's own report is owed and did not arrive, so its mutation count and its verdict on the mpcvm/fhe duplication are unrecorded.
48 lines
2.0 KiB
Go
48 lines
2.0 KiB
Go
// Copyright (C) 2019-2025, Lux Industries Inc. All rights reserved.
|
|
// See the file LICENSE for licensing terms.
|
|
|
|
package mpcvm
|
|
|
|
import (
|
|
"github.com/luxfi/constants"
|
|
"github.com/luxfi/log"
|
|
"github.com/luxfi/node/vms"
|
|
)
|
|
|
|
var _ vms.Factory = (*Factory)(nil)
|
|
|
|
// VMID identifies M-Chain: MPC threshold signing and bridge custody of external
|
|
// wallets (LP-7100). It is constants.MPCVMID and nothing else.
|
|
//
|
|
// A vmID is an immutable one-way door: it is baked into the CreateChainTx at
|
|
// genesis, it is the plugin binary's filename, and it is what the P-Chain stores
|
|
// forever. Every declaration of it must agree, so there is exactly one — this
|
|
// alias — and it points at the single source of truth in luxfi/constants.
|
|
//
|
|
// This VM previously declared a private `thresholdvm` literal here that matched
|
|
// no other declaration in the stack. Per LP-7050 the thresholdvm package was
|
|
// split into mpcvm (M-Chain) and fhevm (F-Chain); "ThresholdVM" and "mvm" are
|
|
// stale names. constants.MPCVMID, node/genesis/builder/registry.go and
|
|
// node/node/vms.go all say mpcvm.
|
|
var VMID = constants.MPCVMID
|
|
|
|
// The value is held by TestVMID_Bytes and TestVMID_IsCanonicalAndStable, which
|
|
// compare it to the literal bytes and to the CB58 the plugin binary is named
|
|
// after.
|
|
//
|
|
// It used to also carry `var _ = map[bool]struct{}{VMID == ids.ID{...}: {}}`,
|
|
// labelled a compile-time assertion. It is not one: a map literal with a
|
|
// single non-constant key compiles whatever the key evaluates to — only a
|
|
// DUPLICATE constant key is a compile error. So it held for every possible
|
|
// value of VMID, including a wrong one, while reading as proof. A check that
|
|
// cannot fail is worse than no check, because it stops anyone writing the one
|
|
// that can.
|
|
// Factory creates M-Chain VM instances.
|
|
type Factory struct{}
|
|
|
|
// New returns a new M-Chain VM. Everything that needs configuration or a
|
|
// database is set up in Initialize; a Factory-built VM holds no state.
|
|
func (f *Factory) New(log.Logger) (interface{}, error) {
|
|
return &VM{}, nil
|
|
}
|