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standard_block.go
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standard_block.go
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// Copyright (C) 2019-2022, Ava Labs, Inc. All rights reserved.
// See the file LICENSE for licensing terms.
package blocks
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 = (*BanffStandardBlock)(nil)
_ Block = (*ApricotStandardBlock)(nil)
)
type BanffStandardBlock struct {
Time uint64 `serialize:"true" json:"time"`
ApricotStandardBlock `serialize:"true"`
}
func (b *BanffStandardBlock) Timestamp() time.Time {
return time.Unix(int64(b.Time), 0)
}
func (b *BanffStandardBlock) Visit(v Visitor) error {
return v.BanffStandardBlock(b)
}
func NewBanffStandardBlock(
timestamp time.Time,
parentID ids.ID,
height uint64,
txs []*txs.Tx,
) (*BanffStandardBlock, error) {
blk := &BanffStandardBlock{
Time: uint64(timestamp.Unix()),
ApricotStandardBlock: ApricotStandardBlock{
CommonBlock: CommonBlock{
PrntID: parentID,
Hght: height,
},
Transactions: txs,
},
}
return blk, initialize(blk)
}
type ApricotStandardBlock struct {
CommonBlock `serialize:"true"`
Transactions []*txs.Tx `serialize:"true" json:"txs"`
}
func (b *ApricotStandardBlock) initialize(bytes []byte) error {
b.CommonBlock.initialize(bytes)
for _, tx := range b.Transactions {
if err := tx.Initialize(txs.Codec); err != nil {
return fmt.Errorf("failed to sign block: %w", err)
}
}
return nil
}
func (b *ApricotStandardBlock) InitCtx(ctx *snow.Context) {
for _, tx := range b.Transactions {
tx.Unsigned.InitCtx(ctx)
}
}
func (b *ApricotStandardBlock) Txs() []*txs.Tx {
return b.Transactions
}
func (b *ApricotStandardBlock) Visit(v Visitor) error {
return v.ApricotStandardBlock(b)
}
// NewApricotStandardBlock is kept for testing purposes only.
// Following Banff activation and subsequent code cleanup, Apricot Standard blocks
// should be only verified (upon bootstrap), never created anymore
func NewApricotStandardBlock(
parentID ids.ID,
height uint64,
txs []*txs.Tx,
) (*ApricotStandardBlock, error) {
blk := &ApricotStandardBlock{
CommonBlock: CommonBlock{
PrntID: parentID,
Hght: height,
},
Transactions: txs,
}
return blk, initialize(blk)
}