erigon-pulse/turbo/snapshotsync/block_reader.go
2022-01-04 15:46:22 +07:00

416 lines
13 KiB
Go

package snapshotsync
import (
"bytes"
"context"
"fmt"
"sync"
"github.com/ledgerwatch/erigon-lib/gointerfaces"
"github.com/ledgerwatch/erigon-lib/gointerfaces/remote"
"github.com/ledgerwatch/erigon-lib/kv"
"github.com/ledgerwatch/erigon/common"
"github.com/ledgerwatch/erigon/core/rawdb"
"github.com/ledgerwatch/erigon/core/types"
"github.com/ledgerwatch/erigon/rlp"
)
// BlockReader can read blocks from db and snapshots
type BlockReader struct {
}
func NewBlockReader() *BlockReader {
return &BlockReader{}
}
func (back *BlockReader) CanonicalHash(ctx context.Context, tx kv.Getter, blockHeight uint64) (common.Hash, error) {
return rawdb.ReadCanonicalHash(tx, blockHeight)
}
func (back *BlockReader) Header(ctx context.Context, tx kv.Getter, hash common.Hash, blockHeight uint64) (*types.Header, error) {
h := rawdb.ReadHeader(tx, hash, blockHeight)
return h, nil
}
func (back *BlockReader) Body(ctx context.Context, tx kv.Tx, hash common.Hash, blockHeight uint64) (body *types.Body, err error) {
body, _, _ = rawdb.ReadBody(tx, hash, blockHeight)
return body, nil
}
func (back *BlockReader) BodyRlp(ctx context.Context, tx kv.Tx, hash common.Hash, blockHeight uint64) (bodyRlp rlp.RawValue, err error) {
body, err := back.Body(ctx, tx, hash, blockHeight)
if err != nil {
return nil, err
}
bodyRlp, err = rlp.EncodeToBytes(body)
if err != nil {
return nil, err
}
return bodyRlp, nil
}
func (back *BlockReader) HeaderByNumber(ctx context.Context, tx kv.Getter, blockHeight uint64) (*types.Header, error) {
h := rawdb.ReadHeaderByNumber(tx, blockHeight)
return h, nil
}
func (back *BlockReader) HeaderByHash(ctx context.Context, tx kv.Getter, hash common.Hash) (*types.Header, error) {
return rawdb.ReadHeaderByHash(tx, hash)
}
func (back *BlockReader) BlockWithSenders(ctx context.Context, tx kv.Tx, hash common.Hash, blockHeight uint64) (block *types.Block, senders []common.Address, err error) {
canonicalHash, err := rawdb.ReadCanonicalHash(tx, blockHeight)
if err != nil {
return nil, nil, fmt.Errorf("requested non-canonical hash %x. canonical=%x", hash, canonicalHash)
}
if canonicalHash == hash {
block, senders, err = rawdb.ReadBlockWithSenders(tx, hash, blockHeight)
if err != nil {
return nil, nil, err
}
return block, senders, nil
}
return rawdb.NonCanonicalBlockWithSenders(tx, hash, blockHeight)
}
type RemoteBlockReader struct {
client remote.ETHBACKENDClient
}
func NewRemoteBlockReader(client remote.ETHBACKENDClient) *RemoteBlockReader {
return &RemoteBlockReader{client}
}
func (back *RemoteBlockReader) BlockWithSenders(ctx context.Context, _ kv.Tx, hash common.Hash, blockHeight uint64) (block *types.Block, senders []common.Address, err error) {
reply, err := back.client.Block(ctx, &remote.BlockRequest{BlockHash: gointerfaces.ConvertHashToH256(hash), BlockHeight: blockHeight})
if err != nil {
return nil, nil, err
}
block = &types.Block{}
err = rlp.Decode(bytes.NewReader(reply.BlockRlp), block)
if err != nil {
return nil, nil, err
}
senders = make([]common.Address, len(reply.Senders)/20)
for i := range senders {
senders[i].SetBytes(reply.Senders[i*20 : (i+1)*20])
}
if len(senders) == block.Transactions().Len() { //it's fine if no senders provided - they can be lazy recovered
block.SendersToTxs(senders)
}
return block, senders, nil
}
func (back *RemoteBlockReader) Header(ctx context.Context, tx kv.Tx, hash common.Hash, blockHeight uint64) (*types.Header, error) {
block, _, err := back.BlockWithSenders(ctx, tx, hash, blockHeight)
if err != nil {
return nil, err
}
if block == nil {
return nil, nil
}
return block.Header(), nil
}
func (back *RemoteBlockReader) Body(ctx context.Context, tx kv.Tx, hash common.Hash, blockHeight uint64) (body *types.Body, err error) {
block, _, err := back.BlockWithSenders(ctx, tx, hash, blockHeight)
if err != nil {
return nil, err
}
if block == nil {
return nil, nil
}
return block.Body(), nil
}
func (back *RemoteBlockReader) BodyRlp(ctx context.Context, tx kv.Tx, hash common.Hash, blockHeight uint64) (bodyRlp rlp.RawValue, err error) {
body, err := back.Body(ctx, tx, hash, blockHeight)
if err != nil {
return nil, err
}
bodyRlp, err = rlp.EncodeToBytes(body)
if err != nil {
return nil, err
}
return bodyRlp, nil
}
// BlockReaderWithSnapshots can read blocks from db and snapshots
type BlockReaderWithSnapshots struct {
sn *AllSnapshots
lock sync.RWMutex
}
func NewBlockReaderWithSnapshots(snapshots *AllSnapshots) *BlockReaderWithSnapshots {
return &BlockReaderWithSnapshots{sn: snapshots}
}
func (back *BlockReaderWithSnapshots) HeaderByNumber(ctx context.Context, tx kv.Getter, blockHeight uint64) (*types.Header, error) {
sn, ok := back.sn.Blocks(blockHeight)
if !ok {
h := rawdb.ReadHeaderByNumber(tx, blockHeight)
return h, nil
}
return back.headerFromSnapshot(blockHeight, sn)
}
// HeaderByHash - will search header in all snapshots starting from recent
func (back *BlockReaderWithSnapshots) HeaderByHash(ctx context.Context, tx kv.Getter, hash common.Hash) (*types.Header, error) {
h, err := rawdb.ReadHeaderByHash(tx, hash)
if err != nil {
return nil, err
}
if h != nil {
return h, nil
}
for i := len(back.sn.blocks) - 1; i >= 0; i-- {
h, err := back.headerFromSnapshotByHash(hash, back.sn.blocks[i])
if err != nil {
return nil, nil
}
if h != nil {
return h, nil
}
}
return nil, nil
}
func (back *BlockReaderWithSnapshots) CanonicalHash(ctx context.Context, tx kv.Getter, blockHeight uint64) (common.Hash, error) {
sn, ok := back.sn.Blocks(blockHeight)
if !ok {
return rawdb.ReadCanonicalHash(tx, blockHeight)
}
h, err := back.headerFromSnapshot(blockHeight, sn)
if err != nil {
return common.Hash{}, err
}
if h == nil {
return common.Hash{}, err
}
return h.Hash(), nil
}
func (back *BlockReaderWithSnapshots) Header(ctx context.Context, tx kv.Getter, hash common.Hash, blockHeight uint64) (*types.Header, error) {
sn, ok := back.sn.Blocks(blockHeight)
if !ok {
h := rawdb.ReadHeader(tx, hash, blockHeight)
return h, nil
}
return back.headerFromSnapshot(blockHeight, sn)
}
func (back *BlockReaderWithSnapshots) ReadHeaderByNumber(ctx context.Context, tx kv.Getter, hash common.Hash, blockHeight uint64) (*types.Header, error) {
sn, ok := back.sn.Blocks(blockHeight)
if !ok {
h := rawdb.ReadHeader(tx, hash, blockHeight)
return h, nil
}
return back.headerFromSnapshot(blockHeight, sn)
}
func (back *BlockReaderWithSnapshots) Body(ctx context.Context, tx kv.Tx, hash common.Hash, blockHeight uint64) (body *types.Body, err error) {
sn, ok := back.sn.Blocks(blockHeight)
if !ok {
canonicalHash, err := rawdb.ReadCanonicalHash(tx, blockHeight)
if err != nil {
return nil, fmt.Errorf("requested non-canonical hash %x. canonical=%x", hash, canonicalHash)
}
body, baseTxID, txsAmount := rawdb.ReadBody(tx, hash, blockHeight)
if body == nil {
return nil, fmt.Errorf("body not found for block %d,%x", blockHeight, hash)
}
if canonicalHash == hash {
body.Transactions, err = rawdb.CanonicalTransactions(tx, baseTxID, txsAmount)
if err != nil {
return nil, err
}
return body, nil
}
body.Transactions, err = rawdb.NonCanonicalTransactions(tx, baseTxID, txsAmount)
if err != nil {
return nil, err
}
return body, nil
}
body, _, _, _, err = back.bodyFromSnapshot(blockHeight, sn)
if err != nil {
return nil, err
}
return body, nil
}
func (back *BlockReaderWithSnapshots) BodyRlp(ctx context.Context, tx kv.Tx, hash common.Hash, blockHeight uint64) (bodyRlp rlp.RawValue, err error) {
body, err := back.Body(ctx, tx, hash, blockHeight)
if err != nil {
return nil, err
}
bodyRlp, err = rlp.EncodeToBytes(body)
if err != nil {
return nil, err
}
return bodyRlp, nil
}
func (back *BlockReaderWithSnapshots) BlockWithSenders(ctx context.Context, tx kv.Tx, hash common.Hash, blockHeight uint64) (block *types.Block, senders []common.Address, err error) {
sn, ok := back.sn.Blocks(blockHeight)
if !ok {
canonicalHash, err := rawdb.ReadCanonicalHash(tx, blockHeight)
if err != nil {
return nil, nil, fmt.Errorf("requested non-canonical hash %x. canonical=%x", hash, canonicalHash)
}
if canonicalHash == hash {
block, senders, err = rawdb.ReadBlockWithSenders(tx, hash, blockHeight)
if err != nil {
return nil, nil, err
}
return block, senders, nil
}
return rawdb.NonCanonicalBlockWithSenders(tx, hash, blockHeight)
}
buf := make([]byte, 16)
back.lock.Lock()
defer back.lock.Unlock()
headerOffset := sn.HeaderHashIdx.Lookup2(blockHeight - sn.HeaderHashIdx.BaseDataID())
bodyOffset := sn.BodyNumberIdx.Lookup2(blockHeight - sn.BodyNumberIdx.BaseDataID())
gg := sn.Headers.MakeGetter()
gg.Reset(headerOffset)
buf, _ = gg.Next(buf[:0])
h := &types.Header{}
if err = rlp.DecodeBytes(buf[1:], h); err != nil {
return nil, nil, err
}
gg = sn.Bodies.MakeGetter()
gg.Reset(bodyOffset)
buf, _ = gg.Next(buf[:0])
b := &types.BodyForStorage{}
reader := bytes.NewReader(buf)
if err = rlp.Decode(reader, b); err != nil {
return nil, nil, err
}
if b.BaseTxId < sn.TxnHashIdx.BaseDataID() {
return nil, nil, fmt.Errorf(".idx file has wrong baseDataID? %d<%d, %s", b.BaseTxId, sn.TxnHashIdx.BaseDataID(), sn.Transactions.FilePath())
}
txs := make([]types.Transaction, b.TxAmount)
senders = make([]common.Address, b.TxAmount)
if b.TxAmount > 0 {
txnOffset := sn.TxnHashIdx.Lookup2(b.BaseTxId - sn.TxnHashIdx.BaseDataID()) // need subtract baseID of indexFile
gg = sn.Transactions.MakeGetter()
gg.Reset(txnOffset)
stream := rlp.NewStream(reader, 0)
for i := uint32(0); i < b.TxAmount; i++ {
buf, _ = gg.Next(buf[:0])
senders[i].SetBytes(buf[1 : 1+20])
txRlp := buf[1+20:]
reader.Reset(txRlp)
stream.Reset(reader, 0)
txs[i], err = types.DecodeTransaction(stream)
if err != nil {
return nil, nil, err
}
}
}
block = types.NewBlockFromStorage(hash, h, txs, b.Uncles)
if len(senders) != block.Transactions().Len() {
return block, senders, nil // no senders is fine - will recover them on the fly
}
block.SendersToTxs(senders)
return block, senders, nil
}
func (back *BlockReaderWithSnapshots) headerFromSnapshot(blockHeight uint64, sn *BlocksSnapshot) (*types.Header, error) {
buf := make([]byte, 16)
headerOffset := sn.HeaderHashIdx.Lookup2(blockHeight - sn.HeaderHashIdx.BaseDataID())
gg := sn.Headers.MakeGetter()
gg.Reset(headerOffset)
buf, _ = gg.Next(buf[:0])
h := &types.Header{}
if err := rlp.DecodeBytes(buf[1:], h); err != nil {
return nil, err
}
return h, nil
}
// headerFromSnapshotByHash - getting header by hash AND ensure that it has correct hash
// because HeaderByHash method will search header in all snapshots - and may request header which doesn't exists
// but because our indices are based on PerfectHashMap, no way to know is given key exists or not, only way -
// to make sure is to fetch it and compare hash
func (back *BlockReaderWithSnapshots) headerFromSnapshotByHash(hash common.Hash, sn *BlocksSnapshot) (*types.Header, error) {
buf := make([]byte, 16)
localID := sn.HeaderHashIdx.Lookup(hash[:])
headerOffset := sn.HeaderHashIdx.Lookup2(localID)
gg := sn.Headers.MakeGetter()
gg.Reset(headerOffset)
buf, _ = gg.Next(buf[:0])
if hash[0] != buf[1] {
return nil, nil
}
h := &types.Header{}
if err := rlp.DecodeBytes(buf[1:], h); err != nil {
return nil, err
}
if h.Hash() != hash {
return nil, nil
}
return h, nil
}
func (back *BlockReaderWithSnapshots) bodyFromSnapshot(blockHeight uint64, sn *BlocksSnapshot) (*types.Body, []common.Address, uint64, uint32, error) {
buf := make([]byte, 16)
bodyOffset := sn.BodyNumberIdx.Lookup2(blockHeight - sn.BodyNumberIdx.BaseDataID())
gg := sn.Bodies.MakeGetter()
gg.Reset(bodyOffset)
buf, _ = gg.Next(buf[:0])
b := &types.BodyForStorage{}
reader := bytes.NewReader(buf)
if err := rlp.Decode(reader, b); err != nil {
return nil, nil, 0, 0, err
}
if b.BaseTxId < sn.TxnHashIdx.BaseDataID() {
return nil, nil, 0, 0, fmt.Errorf(".idx file has wrong baseDataID? %d<%d, %s", b.BaseTxId, sn.TxnHashIdx.BaseDataID(), sn.Transactions.FilePath())
}
txs := make([]types.Transaction, b.TxAmount)
senders := make([]common.Address, b.TxAmount)
if b.TxAmount > 0 {
txnOffset := sn.TxnHashIdx.Lookup2(b.BaseTxId - sn.TxnHashIdx.BaseDataID()) // need subtract baseID of indexFile
gg = sn.Transactions.MakeGetter()
gg.Reset(txnOffset)
stream := rlp.NewStream(reader, 0)
for i := uint32(0); i < b.TxAmount; i++ {
buf, _ = gg.Next(buf[:0])
senders[i].SetBytes(buf[1 : 1+20])
txRlp := buf[1+20:]
reader.Reset(txRlp)
stream.Reset(reader, 0)
var err error
txs[i], err = types.DecodeTransaction(stream)
if err != nil {
return nil, nil, 0, 0, err
}
}
}
body := new(types.Body)
body.Uncles = b.Uncles
return body, senders, b.BaseTxId, b.TxAmount, nil
}