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snapshot.go
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/
snapshot.go
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package chain_benchmark
import (
"fmt"
"github.com/vitelabs/go-vite/common/types"
"github.com/vitelabs/go-vite/ledger"
"time"
)
type snapshotOptions struct {
mockTrie bool
}
func createSnapshotBlock(chainInstance Chain, options *snapshotOptions) *ledger.SnapshotBlock {
latestBlock := chainInstance.GetLatestSnapshotBlock()
now := time.Now()
snapshotBlock := &ledger.SnapshotBlock{
Height: latestBlock.Height + 1,
PrevHash: latestBlock.Hash,
Timestamp: &now,
}
content := chainInstance.GetNeedSnapshotContent()
snapshotBlock.SnapshotContent = content
if options != nil && options.mockTrie {
snapshotBlock.StateHash = types.Hash{}
} else {
trie, _ := chainInstance.GenStateTrie(latestBlock.StateHash, content)
snapshotBlock.StateTrie = trie
snapshotBlock.StateHash = *trie.Hash()
}
snapshotBlock.Hash = snapshotBlock.ComputeHash()
return snapshotBlock
}
func loopInsertSnapshotBlock(chainInstance Chain, interval time.Duration) chan struct{} {
terminal := make(chan struct{})
ticker := time.NewTicker(interval)
createSbOptions := &test_tools.SnapshotOptions{
MockTrie: false,
}
go func() {
for {
select {
case <-terminal:
ticker.Stop()
return
case <-ticker.C:
sb := test_tools.CreateSnapshotBlock(chainInstance, createSbOptions)
chainInstance.InsertSnapshotBlock(sb)
fmt.Printf("latest snapshot height: %d. snapshot account number: %d\n", sb.Height, len(sb.SnapshotContent))
}
}
}()
return terminal
}