core: drop legacy receipt types (ethereum#26225)

This PR drops the legacy receipt types, the freezer-migrate command and the startup check. The previous attempt ethereum#22852 at this failed because there were users who still had legacy receipts in their db, so it had to be reverted ethereum#23247. Since then we added a command to migrate legacy dbs ethereum#24028.

As of the last hardforks all users either must have done the migration, or used the --ignore-legacy-receipts flag which will stop working now.

cmd/geth/config.go

@@ -31,7 +31,6 @@ import (
 	"github.com/ethereum/go-ethereum/accounts/scwallet"
 	"github.com/ethereum/go-ethereum/accounts/usbwallet"
 	"github.com/ethereum/go-ethereum/cmd/utils"
-	"github.com/ethereum/go-ethereum/core/rawdb"
 	"github.com/ethereum/go-ethereum/eth/ethconfig"
 	"github.com/ethereum/go-ethereum/internal/ethapi"
 	"github.com/ethereum/go-ethereum/internal/flags"
@@ -166,26 +165,7 @@ func makeFullNode(ctx *cli.Context) (*node.Node, ethapi.Backend) {
 		cfg.Eth.OverrideTerminalTotalDifficultyPassed = &override
 	}
 
-	backend, eth := utils.RegisterEthService(stack, &cfg.Eth)
-
-	// Warn users to migrate if they have a legacy freezer format.
-	if eth != nil && !ctx.IsSet(utils.IgnoreLegacyReceiptsFlag.Name) {
-		firstIdx := uint64(0)
-		// Hack to speed up check for mainnet because we know
-		// the first non-empty block.
-		ghash := rawdb.ReadCanonicalHash(eth.ChainDb(), 0)
-		if cfg.Eth.NetworkId == 1 && ghash == params.MainnetGenesisHash {
-			firstIdx = 46147
-		}
-		isLegacy, firstLegacy, err := dbHasLegacyReceipts(eth.ChainDb(), firstIdx)
-		if err != nil {
-			log.Error("Failed to check db for legacy receipts", "err", err)
-		} else if isLegacy {
-			stack.Close()
-			log.Error("Database has receipts with a legacy format", "firstLegacy", firstLegacy)
-			utils.Fatalf("Aborting. Please run `geth db freezer-migrate`.")
-		}
-	}
+	backend, _ := utils.RegisterEthService(stack, &cfg.Eth)
 
 	// Configure log filter RPC API.
 	filterSystem := utils.RegisterFilterAPI(stack, backend, &cfg.Eth)

cmd/geth/dbcmd.go

@@ -33,7 +33,6 @@ import (
 	"github.com/ethereum/go-ethereum/console/prompt"
 	"github.com/ethereum/go-ethereum/core/rawdb"
 	"github.com/ethereum/go-ethereum/core/state/snapshot"
-	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/internal/flags"
@@ -69,7 +68,6 @@ Remove blockchain and state databases`,
 			dbImportCmd,
 			dbExportCmd,
 			dbMetadataCmd,
-			dbMigrateFreezerCmd,
 			dbCheckStateContentCmd,
 		},
 	}
@@ -195,17 +193,6 @@ WARNING: This is a low-level operation which may cause database corruption!`,
 		}, utils.NetworkFlags, utils.DatabasePathFlags),
 		Description: "Shows metadata about the chain status.",
 	}
-	dbMigrateFreezerCmd = &cli.Command{
-		Action:    freezerMigrate,
-		Name:      "freezer-migrate",
-		Usage:     "Migrate legacy parts of the freezer. (WARNING: may take a long time)",
-		ArgsUsage: "",
-		Flags: flags.Merge([]cli.Flag{
-			utils.SyncModeFlag,
-		}, utils.NetworkFlags, utils.DatabasePathFlags),
-		Description: `The freezer-migrate command checks your database for receipts in a legacy format and updates those.
-WARNING: please back-up the receipt files in your ancients before running this command.`,
-	}
 )
 
 func removeDB(ctx *cli.Context) error {
@@ -756,92 +743,3 @@ func showMetaData(ctx *cli.Context) error {
 	table.Render()
 	return nil
 }
-
-func freezerMigrate(ctx *cli.Context) error {
-	stack, _ := makeConfigNode(ctx)
-	defer stack.Close()
-
-	db := utils.MakeChainDatabase(ctx, stack, false)
-	defer db.Close()
-
-	// Check first block for legacy receipt format
-	numAncients, err := db.Ancients()
-	if err != nil {
-		return err
-	}
-	if numAncients < 1 {
-		log.Info("No receipts in freezer to migrate")
-		return nil
-	}
-
-	isFirstLegacy, firstIdx, err := dbHasLegacyReceipts(db, 0)
-	if err != nil {
-		return err
-	}
-	if !isFirstLegacy {
-		log.Info("No legacy receipts to migrate")
-		return nil
-	}
-
-	log.Info("Starting migration", "ancients", numAncients, "firstLegacy", firstIdx)
-	start := time.Now()
-	if err := db.MigrateTable("receipts", types.ConvertLegacyStoredReceipts); err != nil {
-		return err
-	}
-	if err := db.Close(); err != nil {
-		return err
-	}
-	log.Info("Migration finished", "duration", time.Since(start))
-
-	return nil
-}
-
-// dbHasLegacyReceipts checks freezer entries for legacy receipts. It stops at the first
-// non-empty receipt and checks its format. The index of this first non-empty element is
-// the second return parameter.
-func dbHasLegacyReceipts(db ethdb.Database, firstIdx uint64) (bool, uint64, error) {
-	// Check first block for legacy receipt format
-	numAncients, err := db.Ancients()
-	if err != nil {
-		return false, 0, err
-	}
-	if numAncients < 1 {
-		return false, 0, nil
-	}
-	if firstIdx >= numAncients {
-		return false, firstIdx, nil
-	}
-	var (
-		legacy       bool
-		blob         []byte
-		emptyRLPList = []byte{192}
-	)
-	// Find first block with non-empty receipt, only if
-	// the index is not already provided.
-	if firstIdx == 0 {
-		for i := uint64(0); i < numAncients; i++ {
-			blob, err = db.Ancient("receipts", i)
-			if err != nil {
-				return false, 0, err
-			}
-			if len(blob) == 0 {
-				continue
-			}
-			if !bytes.Equal(blob, emptyRLPList) {
-				firstIdx = i
-				break
-			}
-		}
-	}
-	first, err := db.Ancient("receipts", firstIdx)
-	if err != nil {
-		return false, 0, err
-	}
-	// We looped over all receipts and they were all empty
-	if bytes.Equal(first, emptyRLPList) {
-		return false, 0, nil
-	}
-	// Is first non-empty receipt legacy?
-	legacy, err = types.IsLegacyStoredReceipts(first)
-	return legacy, firstIdx, err
-}

cmd/geth/main.go

@@ -149,7 +149,6 @@ var (
 		utils.GpoMaxGasPriceFlag,
 		utils.GpoIgnoreGasPriceFlag,
 		utils.MinerNotifyFullFlag,
-		utils.IgnoreLegacyReceiptsFlag,
 		configFileFlag,
 	}, utils.NetworkFlags, utils.DatabasePathFlags)
 

cmd/utils/flags.go

@@ -669,11 +669,6 @@ var (
 	}
 
 	// MISC settings
-	IgnoreLegacyReceiptsFlag = &cli.BoolFlag{
-		Name:     "ignore-legacy-receipts",
-		Usage:    "Geth will start up even if there are legacy receipts in freezer",
-		Category: flags.MiscCategory,
-	}
 	SyncTargetFlag = &cli.PathFlag{
 		Name:      "synctarget",
 		Usage:     `File for containing the hex-encoded block-rlp as sync target(dev feature)`,

core/rawdb/accessors_chain.go

@@ -669,10 +669,11 @@ func DeleteReceipts(db ethdb.KeyValueWriter, hash common.Hash, number uint64) {
 
 // storedReceiptRLP is the storage encoding of a receipt.
 // Re-definition in core/types/receipt.go.
+// TODO: Re-use the existing definition.
 type storedReceiptRLP struct {
 	PostStateOrStatus []byte
 	CumulativeGasUsed uint64
-	Logs              []*types.LogForStorage
+	Logs              []*types.Log
 }
 
 // ReceiptLogs is a barebone version of ReceiptForStorage which only keeps
@@ -688,10 +689,7 @@ func (r *receiptLogs) DecodeRLP(s *rlp.Stream) error {
 	if err := s.Decode(&stored); err != nil {
 		return err
 	}
-	r.Logs = make([]*types.Log, len(stored.Logs))
-	for i, log := range stored.Logs {
-		r.Logs[i] = (*types.Log)(log)
-	}
+	r.Logs = stored.Logs
 	return nil
 }
 
@@ -727,11 +725,6 @@ func ReadLogs(db ethdb.Reader, hash common.Hash, number uint64, config *params.C
 	}
 	receipts := []*receiptLogs{}
 	if err := rlp.DecodeBytes(data, &receipts); err != nil {
-		// Receipts might be in the legacy format, try decoding that.
-		// TODO: to be removed after users migrated
-		if logs := readLegacyLogs(db, hash, number, config); logs != nil {
-			return logs
-		}
 		log.Error("Invalid receipt array RLP", "hash", hash, "err", err)
 		return nil
 	}
@@ -752,21 +745,6 @@ func ReadLogs(db ethdb.Reader, hash common.Hash, number uint64, config *params.C
 	return logs
 }
 
-// readLegacyLogs is a temporary workaround for when trying to read logs
-// from a block which has its receipt stored in the legacy format. It'll
-// be removed after users have migrated their freezer databases.
-func readLegacyLogs(db ethdb.Reader, hash common.Hash, number uint64, config *params.ChainConfig) [][]*types.Log {
-	receipts := ReadReceipts(db, hash, number, config)
-	if receipts == nil {
-		return nil
-	}
-	logs := make([][]*types.Log, len(receipts))
-	for i, receipt := range receipts {
-		logs[i] = receipt.Logs
-	}
-	return logs
-}
-
 // ReadBlock retrieves an entire block corresponding to the hash, assembling it
 // back from the stored header and body. If either the header or body could not
 // be retrieved nil is returned.

core/types/log.go

@@ -64,24 +64,13 @@ type logMarshaling struct {
 
 //go:generate go run ../../rlp/rlpgen -type rlpLog -out gen_log_rlp.go
 
+// rlpLog is used to RLP-encode both the consensus and storage formats.
 type rlpLog struct {
 	Address common.Address
 	Topics  []common.Hash
 	Data    []byte
 }
 
-// legacyRlpStorageLog is the previous storage encoding of a log including some redundant fields.
-type legacyRlpStorageLog struct {
-	Address     common.Address
-	Topics      []common.Hash
-	Data        []byte
-	BlockNumber uint64
-	TxHash      common.Hash
-	TxIndex     uint
-	BlockHash   common.Hash
-	Index       uint
-}
-
 // EncodeRLP implements rlp.Encoder.
 func (l *Log) EncodeRLP(w io.Writer) error {
 	rl := rlpLog{Address: l.Address, Topics: l.Topics, Data: l.Data}
@@ -97,44 +86,3 @@ func (l *Log) DecodeRLP(s *rlp.Stream) error {
 	}
 	return err
 }
-
-// LogForStorage is a wrapper around a Log that handles
-// backward compatibility with prior storage formats.
-type LogForStorage Log
-
-// EncodeRLP implements rlp.Encoder.
-func (l *LogForStorage) EncodeRLP(w io.Writer) error {
-	rl := rlpLog{Address: l.Address, Topics: l.Topics, Data: l.Data}
-	return rlp.Encode(w, &rl)
-}
-
-// DecodeRLP implements rlp.Decoder.
-//
-// Note some redundant fields(e.g. block number, tx hash etc) will be assembled later.
-func (l *LogForStorage) DecodeRLP(s *rlp.Stream) error {
-	blob, err := s.Raw()
-	if err != nil {
-		return err
-	}
-	var dec rlpLog
-	err = rlp.DecodeBytes(blob, &dec)
-	if err == nil {
-		*l = LogForStorage{
-			Address: dec.Address,
-			Topics:  dec.Topics,
-			Data:    dec.Data,
-		}
-	} else {
-		// Try to decode log with previous definition.
-		var dec legacyRlpStorageLog
-		err = rlp.DecodeBytes(blob, &dec)
-		if err == nil {
-			*l = LogForStorage{
-				Address: dec.Address,
-				Topics:  dec.Topics,
-				Data:    dec.Data,
-			}
-		}
-	}
-	return err
-}