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main.go
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main.go
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// Copyright (C) 2019-2024, Ava Labs, Inc. All rights reserved.
// See the file LICENSE for licensing terms.
package main
import (
"context"
"log"
"time"
"github.com/ava-labs/avalanchego/ids"
"github.com/ava-labs/avalanchego/indexer"
"github.com/ava-labs/avalanchego/vms/proposervm/block"
"github.com/ava-labs/avalanchego/wallet/chain/x/builder"
"github.com/ava-labs/avalanchego/wallet/subnet/primary"
)
// This example program continuously polls for the next X-Chain block
// and prints the ID of the block and its transactions.
func main() {
var (
uri = primary.LocalAPIURI + "/ext/index/X/block"
xChainID = ids.FromStringOrPanic("2eNy1mUFdmaxXNj1eQHUe7Np4gju9sJsEtWQ4MX3ToiNKuADed")
client = indexer.NewClient(uri)
ctx = context.Background()
nextIndex uint64
)
for {
container, err := client.GetContainerByIndex(ctx, nextIndex)
if err != nil {
time.Sleep(time.Second)
log.Println("polling for next accepted block")
continue
}
proposerVMBlock, err := block.Parse(container.Bytes, xChainID)
if err != nil {
log.Fatalf("failed to parse proposervm block: %s\n", err)
}
avmBlockBytes := proposerVMBlock.Block()
avmBlock, err := builder.Parser.ParseBlock(avmBlockBytes)
if err != nil {
log.Fatalf("failed to parse avm block: %s\n", err)
}
acceptedTxs := avmBlock.Txs()
log.Printf("accepted block %s with %d transactions\n", avmBlock.ID(), len(acceptedTxs))
for _, tx := range acceptedTxs {
log.Printf("accepted transaction %s\n", tx.ID())
}
nextIndex++
}
}