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proposal_block.go
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proposal_block.go
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// Copyright (C) 2019-2024, Ava Labs, Inc. All rights reserved.
// See the file LICENSE for licensing terms.
package block
import (
"fmt"
"time"
"github.com/ava-labs/avalanchego/ids"
"github.com/ava-labs/avalanchego/snow"
"github.com/ava-labs/avalanchego/vms/platformvm/txs"
)
var (
_ BanffBlock = (*BanffProposalBlock)(nil)
_ Block = (*ApricotProposalBlock)(nil)
)
type BanffProposalBlock struct {
Time uint64 `serialize:"true" json:"time"`
Transactions []*txs.Tx `serialize:"true" json:"txs"`
ApricotProposalBlock `serialize:"true"`
}
func (b *BanffProposalBlock) initialize(bytes []byte) error {
if err := b.ApricotProposalBlock.initialize(bytes); err != nil {
return err
}
for _, tx := range b.Transactions {
if err := tx.Initialize(txs.Codec); err != nil {
return fmt.Errorf("failed to initialize tx: %w", err)
}
}
return nil
}
func (b *BanffProposalBlock) InitCtx(ctx *snow.Context) {
for _, tx := range b.Transactions {
tx.Unsigned.InitCtx(ctx)
}
b.ApricotProposalBlock.InitCtx(ctx)
}
func (b *BanffProposalBlock) Timestamp() time.Time {
return time.Unix(int64(b.Time), 0)
}
func (b *BanffProposalBlock) Txs() []*txs.Tx {
l := len(b.Transactions)
txs := make([]*txs.Tx, l+1)
copy(txs, b.Transactions)
txs[l] = b.Tx
return txs
}
func (b *BanffProposalBlock) Visit(v Visitor) error {
return v.BanffProposalBlock(b)
}
func NewBanffProposalBlock(
timestamp time.Time,
parentID ids.ID,
height uint64,
proposalTx *txs.Tx,
decisionTxs []*txs.Tx,
) (*BanffProposalBlock, error) {
blk := &BanffProposalBlock{
Transactions: decisionTxs,
Time: uint64(timestamp.Unix()),
ApricotProposalBlock: ApricotProposalBlock{
CommonBlock: CommonBlock{
PrntID: parentID,
Hght: height,
},
Tx: proposalTx,
},
}
return blk, initialize(blk, &blk.CommonBlock)
}
type ApricotProposalBlock struct {
CommonBlock `serialize:"true"`
Tx *txs.Tx `serialize:"true" json:"tx"`
}
func (b *ApricotProposalBlock) initialize(bytes []byte) error {
b.CommonBlock.initialize(bytes)
if err := b.Tx.Initialize(txs.Codec); err != nil {
return fmt.Errorf("failed to initialize tx: %w", err)
}
return nil
}
func (b *ApricotProposalBlock) InitCtx(ctx *snow.Context) {
b.Tx.Unsigned.InitCtx(ctx)
}
func (b *ApricotProposalBlock) Txs() []*txs.Tx {
return []*txs.Tx{b.Tx}
}
func (b *ApricotProposalBlock) Visit(v Visitor) error {
return v.ApricotProposalBlock(b)
}
// NewApricotProposalBlock is kept for testing purposes only.
// Following Banff activation and subsequent code cleanup, Apricot Proposal blocks
// should be only verified (upon bootstrap), never created anymore
func NewApricotProposalBlock(
parentID ids.ID,
height uint64,
tx *txs.Tx,
) (*ApricotProposalBlock, error) {
blk := &ApricotProposalBlock{
CommonBlock: CommonBlock{
PrntID: parentID,
Hght: height,
},
Tx: tx,
}
return blk, initialize(blk, &blk.CommonBlock)
}