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transaction_results.go
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transaction_results.go
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package badger
import (
"encoding/binary"
"encoding/hex"
"fmt"
"github.com/dgraph-io/badger/v2"
"github.com/onflow/flow-go/model/flow"
"github.com/onflow/flow-go/module"
"github.com/onflow/flow-go/module/metrics"
"github.com/onflow/flow-go/storage"
"github.com/onflow/flow-go/storage/badger/operation"
)
type TransactionResults struct {
db *badger.DB
cache *Cache
indexCache *Cache
blockCache *Cache
}
func KeyFromBlockIDTransactionID(blockID flow.Identifier, txID flow.Identifier) string {
return fmt.Sprintf("%x%x", blockID, txID)
}
func KeyFromBlockIDIndex(blockID flow.Identifier, txIndex uint32) string {
idData := make([]byte, 4) //uint32 fits into 4 bytes
binary.BigEndian.PutUint32(idData, txIndex)
return fmt.Sprintf("%x%x", blockID, idData)
}
func KeyFromBlockID(blockID flow.Identifier) string {
return blockID.String()
}
func KeyToBlockIDTransactionID(key string) (flow.Identifier, flow.Identifier, error) {
blockIDStr := key[:64]
txIDStr := key[64:]
blockID, err := flow.HexStringToIdentifier(blockIDStr)
if err != nil {
return flow.ZeroID, flow.ZeroID, fmt.Errorf("could not get block ID: %w", err)
}
txID, err := flow.HexStringToIdentifier(txIDStr)
if err != nil {
return flow.ZeroID, flow.ZeroID, fmt.Errorf("could not get transaction id: %w", err)
}
return blockID, txID, nil
}
func KeyToBlockIDIndex(key string) (flow.Identifier, uint32, error) {
blockIDStr := key[:64]
indexStr := key[64:]
blockID, err := flow.HexStringToIdentifier(blockIDStr)
if err != nil {
return flow.ZeroID, 0, fmt.Errorf("could not get block ID: %w", err)
}
txIndexBytes, err := hex.DecodeString(indexStr)
if err != nil {
return flow.ZeroID, 0, fmt.Errorf("could not get transaction index: %w", err)
}
if len(txIndexBytes) != 4 {
return flow.ZeroID, 0, fmt.Errorf("could not get transaction index - invalid length: %d", len(txIndexBytes))
}
txIndex := binary.BigEndian.Uint32(txIndexBytes)
return blockID, txIndex, nil
}
func KeyToBlockID(key string) (flow.Identifier, error) {
blockID, err := flow.HexStringToIdentifier(key)
if err != nil {
return flow.ZeroID, fmt.Errorf("could not get block ID: %w", err)
}
return blockID, err
}
func NewTransactionResults(collector module.CacheMetrics, db *badger.DB, transactionResultsCacheSize uint) *TransactionResults {
retrieve := func(key interface{}) func(tx *badger.Txn) (interface{}, error) {
var txResult flow.TransactionResult
return func(tx *badger.Txn) (interface{}, error) {
blockID, txID, err := KeyToBlockIDTransactionID(key.(string))
if err != nil {
return nil, fmt.Errorf("could not convert key: %w", err)
}
err = operation.RetrieveTransactionResult(blockID, txID, &txResult)(tx)
if err != nil {
return nil, handleError(err, flow.TransactionResult{})
}
return txResult, nil
}
}
retrieveIndex := func(key interface{}) func(tx *badger.Txn) (interface{}, error) {
var txResult flow.TransactionResult
return func(tx *badger.Txn) (interface{}, error) {
blockID, txIndex, err := KeyToBlockIDIndex(key.(string))
if err != nil {
return nil, fmt.Errorf("could not convert index key: %w", err)
}
err = operation.RetrieveTransactionResultByIndex(blockID, txIndex, &txResult)(tx)
if err != nil {
return nil, handleError(err, flow.TransactionResult{})
}
return txResult, nil
}
}
retrieveForBlock := func(key interface{}) func(tx *badger.Txn) (interface{}, error) {
var txResults []flow.TransactionResult
return func(tx *badger.Txn) (interface{}, error) {
blockID, err := KeyToBlockID(key.(string))
if err != nil {
return nil, fmt.Errorf("could not convert index key: %w", err)
}
err = operation.LookupTransactionResultsByBlockIDUsingIndex(blockID, &txResults)(tx)
if err != nil {
return nil, handleError(err, flow.TransactionResult{})
}
return txResults, nil
}
}
return &TransactionResults{
db: db,
cache: newCache(collector, metrics.ResourceTransactionResults,
withLimit(transactionResultsCacheSize),
withStore(noopStore),
withRetrieve(retrieve),
),
indexCache: newCache(collector, metrics.ResourceTransactionResultIndices,
withLimit(transactionResultsCacheSize),
withStore(noopStore),
withRetrieve(retrieveIndex),
),
blockCache: newCache(collector, metrics.ResourceTransactionResultIndices,
withLimit(transactionResultsCacheSize),
withStore(noopStore),
withRetrieve(retrieveForBlock),
),
}
}
// BatchStore will store the transaction results for the given block ID in a batch
func (tr *TransactionResults) BatchStore(blockID flow.Identifier, transactionResults []flow.TransactionResult, batch storage.BatchStorage) error {
writeBatch := batch.GetWriter()
for i, result := range transactionResults {
err := operation.BatchInsertTransactionResult(blockID, &result)(writeBatch)
if err != nil {
return fmt.Errorf("cannot batch insert tx result: %w", err)
}
err = operation.BatchIndexTransactionResult(blockID, uint32(i), &result)(writeBatch)
if err != nil {
return fmt.Errorf("cannot batch index tx result: %w", err)
}
}
batch.OnSucceed(func() {
for i, result := range transactionResults {
key := KeyFromBlockIDTransactionID(blockID, result.TransactionID)
// cache for each transaction, so that it's faster to retrieve
tr.cache.Insert(key, result)
index := uint32(i)
keyIndex := KeyFromBlockIDIndex(blockID, index)
tr.indexCache.Insert(keyIndex, result)
}
key := KeyFromBlockID(blockID)
tr.blockCache.Insert(key, transactionResults)
})
return nil
}
// ByBlockIDTransactionID returns the runtime transaction result for the given block ID and transaction ID
func (tr *TransactionResults) ByBlockIDTransactionID(blockID flow.Identifier, txID flow.Identifier) (*flow.TransactionResult, error) {
tx := tr.db.NewTransaction(false)
defer tx.Discard()
key := KeyFromBlockIDTransactionID(blockID, txID)
val, err := tr.cache.Get(key)(tx)
if err != nil {
return nil, err
}
transactionResult, ok := val.(flow.TransactionResult)
if !ok {
return nil, fmt.Errorf("could not convert transaction result: %w", err)
}
return &transactionResult, nil
}
// ByBlockIDIndex returns the runtime transaction result for the given block ID and transaction index
func (tr *TransactionResults) ByBlockIDTransactionIndex(blockID flow.Identifier, txIndex uint32) (*flow.TransactionResult, error) {
tx := tr.db.NewTransaction(false)
defer tx.Discard()
key := KeyFromBlockIDIndex(blockID, txIndex)
val, err := tr.indexCache.Get(key)(tx)
if err != nil {
return nil, err
}
transactionResult, ok := val.(flow.TransactionResult)
if !ok {
return nil, fmt.Errorf("could not convert transaction result: %w", err)
}
return &transactionResult, nil
}
// ByBlockID gets all transaction results for a block, ordered by transaction index
func (tr *TransactionResults) ByBlockID(blockID flow.Identifier) ([]flow.TransactionResult, error) {
tx := tr.db.NewTransaction(false)
defer tx.Discard()
key := KeyFromBlockID(blockID)
val, err := tr.blockCache.Get(key)(tx)
if err != nil {
return nil, err
}
transactionResults, ok := val.([]flow.TransactionResult)
if !ok {
return nil, fmt.Errorf("could not convert transaction result: %w", err)
}
return transactionResults, nil
}
// RemoveByBlockID removes transaction results by block ID
func (tr *TransactionResults) RemoveByBlockID(blockID flow.Identifier) error {
return tr.db.Update(operation.RemoveTransactionResultsByBlockID(blockID))
}