erigon-pulse/migrations/receipts.go

package migrations

import (
	"encoding/binary"
	"fmt"
	"os"
	"runtime"
	"time"

	"github.com/ledgerwatch/turbo-geth/common"
	"github.com/ledgerwatch/turbo-geth/common/dbutils"
	"github.com/ledgerwatch/turbo-geth/common/etl"
	"github.com/ledgerwatch/turbo-geth/core/types"
	"github.com/ledgerwatch/turbo-geth/ethdb"
	"github.com/ledgerwatch/turbo-geth/ethdb/cbor"
	"github.com/ledgerwatch/turbo-geth/log"
	"github.com/ledgerwatch/turbo-geth/rlp"
)

var receiptsCborEncode = Migration{
	Name: "receipts_cbor_encode",
	Up: func(db ethdb.Database, datadir string, progress []byte, CommitProgress etl.LoadCommitHandler) error {
		logEvery := time.NewTicker(30 * time.Second)
		defer logEvery.Stop()
		buf := make([]byte, 0, 100_000)
		const loadStep = "load"

		collector, err1 := etl.NewCollectorFromFiles(datadir)
		if err1 != nil {
			return err1
		}
		switch string(progress) {
		case "":
			if collector != nil { //  can't use files if progress field not set
				_ = os.RemoveAll(datadir)
				collector = nil
			}
		case loadStep:
			if collector == nil {
				return ErrMigrationETLFilesDeleted
			}
			goto LoadStep
		}

		collector = etl.NewCriticalCollector(datadir, etl.NewSortableBuffer(etl.BufferOptimalSize))
		if err1 = db.Walk(dbutils.BlockReceiptsPrefix, nil, 0, func(k, v []byte) (bool, error) {
			blockNum := binary.BigEndian.Uint64(k[:8])
			select {
			default:
			case <-logEvery.C:
				var m runtime.MemStats
				runtime.ReadMemStats(&m)
				log.Info("Migration progress", "blockNum", blockNum, "alloc", common.StorageSize(m.Alloc), "sys", common.StorageSize(m.Sys))
			}

			// Convert the receipts from their storage form to their internal representation
			storageReceipts := []*types.ReceiptForStorage{}
			if err := rlp.DecodeBytes(v, &storageReceipts); err != nil {
				return false, fmt.Errorf("invalid receipt array RLP: %w, k=%x", err, k)
			}

			buf = buf[:0]
			if err := cbor.Marshal(&buf, storageReceipts); err != nil {
				return false, err
			}
			if err := collector.Collect(k, buf); err != nil {
				return false, fmt.Errorf("collecting key %x: %w", k, err)
			}
			return true, nil
		}); err1 != nil {
			return err1
		}

		if err := db.(ethdb.BucketsMigrator).ClearBuckets(dbutils.BlockReceiptsPrefix); err != nil {
			return fmt.Errorf("clearing the receipt bucket: %w", err)
		}

		// Commit clearing of the bucket - freelist should now be written to the database
		if err := CommitProgress(db, []byte(loadStep), false); err != nil {
			return fmt.Errorf("committing the removal of receipt table")
		}

	LoadStep:
		// Commit again
		if err := CommitProgress(db, []byte(loadStep), false); err != nil {
			return fmt.Errorf("committing again to create a stable view the removal of receipt table")
		}
		// Now transaction would have been re-opened, and we should be re-using the space
		if err := collector.Load(db, dbutils.BlockReceiptsPrefix, etl.IdentityLoadFunc, etl.TransformArgs{OnLoadCommit: CommitProgress}); err != nil {
			return fmt.Errorf("loading the transformed data back into the receipts table: %w", err)
		}
		return nil
	},
}