updates for light sync transactions

db/migrations/00002_create_full_sync_transactions_table.sql

@@ -5,7 +5,7 @@ CREATE TABLE full_sync_transactions (
   gaslimit    NUMERIC,
   gasprice    NUMERIC,
   hash        VARCHAR(66),
-  input_data  VARCHAR,
+  input_data  BYTEA,
   nonce       NUMERIC,
   raw         BYTEA,
   tx_from     VARCHAR(66),

db/migrations/00025_create_light_sync_transactions_table.sql

@@ -3,10 +3,15 @@ CREATE TABLE light_sync_transactions (
   id          SERIAL PRIMARY KEY,
   header_id   INTEGER NOT NULL REFERENCES headers(id) ON DELETE CASCADE,
   hash        TEXT,
-  raw       JSONB,
+  gaslimit    NUMERIC,
-  tx_index  INTEGER,
+  gasprice    NUMERIC,
+  input_data  BYTEA,
+  nonce       NUMERIC,
+  raw         BYTEA,
   tx_from     TEXT,
+  tx_index    INTEGER,
   tx_to       TEXT,
+  "value"     NUMERIC,
   UNIQUE (header_id, hash)
 );
 

db/schema.sql

@@ -161,7 +161,7 @@ CREATE TABLE public.full_sync_transactions (
     gaslimit numeric,
     gasprice numeric,
     hash character varying(66),
-    input_data character varying,
+    input_data bytea,
     nonce numeric,
     raw bytea,
     tx_from character varying(66),
@@ -266,10 +266,15 @@ CREATE TABLE public.light_sync_transactions (
     id integer NOT NULL,
     header_id integer NOT NULL,
     hash text,
-    raw jsonb,
+    gaslimit numeric,
-    tx_index integer,
+    gasprice numeric,
+    input_data bytea,
+    nonce numeric,
+    raw bytea,
     tx_from text,
-    tx_to text
+    tx_index integer,
+    tx_to text,
+    value numeric
 );
 
 

libraries/shared/transactions/syncer.go

@@ -0,0 +1,55 @@
+package transactions
+
+import (
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/vulcanize/vulcanizedb/pkg/core"
+	"github.com/vulcanize/vulcanizedb/pkg/datastore"
+	"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
+	"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres/repositories"
+)
+
+type ITransactionsSyncer interface {
+	SyncTransactions(headerID int64, logs []types.Log) error
+}
+
+type TransactionsSyncer struct {
+	BlockChain core.BlockChain
+	Repository datastore.HeaderRepository
+}
+
+func NewTransactionsSyncer(db *postgres.DB, blockChain core.BlockChain) TransactionsSyncer {
+	repository := repositories.NewHeaderRepository(db)
+	return TransactionsSyncer{
+		BlockChain: blockChain,
+		Repository: repository,
+	}
+}
+
+func (syncer TransactionsSyncer) SyncTransactions(headerID int64, logs []types.Log) error {
+	transactionHashes := getUniqueTransactionHashes(logs)
+	transactions, transactionErr := syncer.BlockChain.GetTransactions(transactionHashes)
+	if transactionErr != nil {
+		return transactionErr
+	}
+	for _, transaction := range transactions {
+		writeErr := syncer.Repository.CreateTransaction(headerID, transaction)
+		if writeErr != nil {
+			return writeErr
+		}
+	}
+	return nil
+}
+
+func getUniqueTransactionHashes(logs []types.Log) []common.Hash {
+	seen := make(map[common.Hash]struct{}, len(logs))
+	var result []common.Hash
+	for _, log := range logs {
+		if _, ok := seen[log.TxHash]; ok {
+			continue
+		}
+		seen[log.TxHash] = struct{}{}
+		result = append(result, log.TxHash)
+	}
+	return result
+}

libraries/shared/transactions/syncer_test.go

@@ -0,0 +1,80 @@
+package transactions_test
+
+import (
+	"github.com/ethereum/go-ethereum/core/types"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+	"github.com/vulcanize/vulcanizedb/libraries/shared/transactions"
+	"github.com/vulcanize/vulcanizedb/pkg/core"
+	"github.com/vulcanize/vulcanizedb/pkg/fakes"
+	"github.com/vulcanize/vulcanizedb/test_config"
+)
+
+var _ = Describe("Transaction syncer", func() {
+	It("fetches transactions for logs", func() {
+		db := test_config.NewTestDB(test_config.NewTestNode())
+		blockChain := fakes.NewMockBlockChain()
+		syncer := transactions.NewTransactionsSyncer(db, blockChain)
+
+		err := syncer.SyncTransactions(0, []types.Log{})
+
+		Expect(err).NotTo(HaveOccurred())
+		Expect(blockChain.GetTransactionsCalled).To(BeTrue())
+	})
+
+	It("only fetches transactions with unique hashes", func() {
+		db := test_config.NewTestDB(test_config.NewTestNode())
+		blockChain := fakes.NewMockBlockChain()
+		syncer := transactions.NewTransactionsSyncer(db, blockChain)
+
+		err := syncer.SyncTransactions(0, []types.Log{{
+			TxHash: fakes.FakeHash,
+		}, {
+			TxHash: fakes.FakeHash,
+		}})
+
+		Expect(err).NotTo(HaveOccurred())
+		Expect(len(blockChain.GetTransactionsPassedHashes)).To(Equal(1))
+	})
+
+	It("returns error if fetching transactions fails", func() {
+		db := test_config.NewTestDB(test_config.NewTestNode())
+		blockChain := fakes.NewMockBlockChain()
+		blockChain.GetTransactionsError = fakes.FakeError
+		syncer := transactions.NewTransactionsSyncer(db, blockChain)
+
+		err := syncer.SyncTransactions(0, []types.Log{})
+
+		Expect(err).To(HaveOccurred())
+		Expect(err).To(MatchError(fakes.FakeError))
+	})
+
+	It("passes transactions to repository for persistence", func() {
+		db := test_config.NewTestDB(test_config.NewTestNode())
+		blockChain := fakes.NewMockBlockChain()
+		blockChain.Transactions = []core.TransactionModel{{}}
+		syncer := transactions.NewTransactionsSyncer(db, blockChain)
+		mockHeaderRepository := fakes.NewMockHeaderRepository()
+		syncer.Repository = mockHeaderRepository
+
+		err := syncer.SyncTransactions(0, []types.Log{})
+
+		Expect(err).NotTo(HaveOccurred())
+		Expect(mockHeaderRepository.CreateTransactionCalled).To(BeTrue())
+	})
+
+	It("returns error if persisting transactions fails", func() {
+		db := test_config.NewTestDB(test_config.NewTestNode())
+		blockChain := fakes.NewMockBlockChain()
+		blockChain.Transactions = []core.TransactionModel{{}}
+		syncer := transactions.NewTransactionsSyncer(db, blockChain)
+		mockHeaderRepository := fakes.NewMockHeaderRepository()
+		mockHeaderRepository.CreateTransactionError = fakes.FakeError
+		syncer.Repository = mockHeaderRepository
+
+		err := syncer.SyncTransactions(0, []types.Log{})
+
+		Expect(err).To(HaveOccurred())
+		Expect(err).To(MatchError(fakes.FakeError))
+	})
+})

libraries/shared/transactions/transactions_suite_test.go

@@ -0,0 +1,13 @@
+package transactions_test
+
+import (
+	"testing"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+func TestTransactions(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "Shared Transactions Suite")
+}

libraries/shared/watcher/event_watcher.go

@@ -18,14 +18,16 @@ package watcher
 
 import (
 	"fmt"
+	"github.com/vulcanize/vulcanizedb/libraries/shared/transactions"
 
 	"github.com/ethereum/go-ethereum/common"
-	log "github.com/sirupsen/logrus"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/sirupsen/logrus"
 
-	chunk "github.com/vulcanize/vulcanizedb/libraries/shared/chunker"
+	"github.com/vulcanize/vulcanizedb/libraries/shared/chunker"
 	"github.com/vulcanize/vulcanizedb/libraries/shared/constants"
-	fetch "github.com/vulcanize/vulcanizedb/libraries/shared/fetcher"
+	"github.com/vulcanize/vulcanizedb/libraries/shared/fetcher"
-	repo "github.com/vulcanize/vulcanizedb/libraries/shared/repository"
+	"github.com/vulcanize/vulcanizedb/libraries/shared/repository"
 	"github.com/vulcanize/vulcanizedb/libraries/shared/transformer"
 	"github.com/vulcanize/vulcanizedb/pkg/core"
 	"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
@@ -33,21 +35,26 @@ import (
 
 type EventWatcher struct {
 	Transformers  []transformer.EventTransformer
+	BlockChain    core.BlockChain
 	DB            *postgres.DB
-	Fetcher       fetch.LogFetcher
+	Fetcher       fetcher.LogFetcher
-	Chunker       chunk.Chunker
+	Chunker       chunker.Chunker
 	Addresses     []common.Address
 	Topics        []common.Hash
 	StartingBlock *int64
+	Syncer        transactions.ITransactionsSyncer
 }
 
 func NewEventWatcher(db *postgres.DB, bc core.BlockChain) EventWatcher {
-	chunker := chunk.NewLogChunker()
+	logChunker := chunker.NewLogChunker()
-	fetcher := fetch.NewFetcher(bc)
+	logFetcher := fetcher.NewFetcher(bc)
+	transactionSyncer := transactions.NewTransactionsSyncer(db, bc)
 	return EventWatcher{
+		BlockChain: bc,
 		DB:         db,
-		Fetcher: fetcher,
+		Fetcher:    logFetcher,
-		Chunker: chunker,
+		Chunker:    logChunker,
+		Syncer:     transactionSyncer,
 	}
 }
 
@@ -85,15 +92,15 @@ func (watcher *EventWatcher) Execute(recheckHeaders constants.TransformerExecuti
 		return fmt.Errorf("No transformers added to watcher")
 	}
 
-	checkedColumnNames, err := repo.GetCheckedColumnNames(watcher.DB)
+	checkedColumnNames, err := repository.GetCheckedColumnNames(watcher.DB)
 	if err != nil {
 		return err
 	}
-	notCheckedSQL := repo.CreateNotCheckedSQL(checkedColumnNames, recheckHeaders)
+	notCheckedSQL := repository.CreateNotCheckedSQL(checkedColumnNames, recheckHeaders)
 
-	missingHeaders, err := repo.MissingHeaders(*watcher.StartingBlock, -1, watcher.DB, notCheckedSQL)
+	missingHeaders, err := repository.MissingHeaders(*watcher.StartingBlock, -1, watcher.DB, notCheckedSQL)
 	if err != nil {
-		log.Error("Fetching of missing headers failed in watcher!")
+		logrus.Error("Fetching of missing headers failed in watcher!")
 		return err
 	}
 
@@ -101,11 +108,25 @@ func (watcher *EventWatcher) Execute(recheckHeaders constants.TransformerExecuti
 		// TODO Extend FetchLogs for doing several blocks at a time
 		logs, err := watcher.Fetcher.FetchLogs(watcher.Addresses, watcher.Topics, header)
 		if err != nil {
-			// TODO Handle fetch error in watcher
+			logrus.Errorf("Error while fetching logs for header %v in watcher", header.Id)
-			log.Errorf("Error while fetching logs for header %v in watcher", header.Id)
 			return err
 		}
 
+		transactionsSyncErr := watcher.Syncer.SyncTransactions(header.Id, logs)
+		if transactionsSyncErr != nil {
+			logrus.Errorf("error syncing transactions: %s", transactionsSyncErr.Error())
+			return transactionsSyncErr
+		}
+
+		transformErr := watcher.transformLogs(logs, header)
+		if transformErr != nil {
+			return transformErr
+		}
+	}
+	return err
+}
+
+func (watcher *EventWatcher) transformLogs(logs []types.Log, header core.Header) error {
 	chunkedLogs := watcher.Chunker.ChunkLogs(logs)
 
 	// Can't quit early and mark as checked if there are no logs. If we are running continuousLogSync,
@@ -113,14 +134,13 @@ func (watcher *EventWatcher) Execute(recheckHeaders constants.TransformerExecuti
 	for _, t := range watcher.Transformers {
 		transformerName := t.GetConfig().TransformerName
 		logChunk := chunkedLogs[transformerName]
-			err = t.Execute(logChunk, header, constants.HeaderMissing)
+		err := t.Execute(logChunk, header, constants.HeaderMissing)
 		if err != nil {
-				log.Errorf("%v transformer failed to execute in watcher: %v", transformerName, err)
+			logrus.Errorf("%v transformer failed to execute in watcher: %v", transformerName, err)
 			return err
 		}
 	}
-	}
+	return nil
-	return err
 }
 
 func earlierStartingBlockNumber(transformerBlock, watcherBlock int64) bool {

libraries/shared/watcher/event_watcher_test.go

@@ -121,6 +121,33 @@ var _ = Describe("Watcher", func() {
 			w = watcher.NewEventWatcher(db, &mockBlockChain)
 		})
 
+		It("syncs transactions for fetched logs", func() {
+			fakeTransformer := &mocks.MockTransformer{}
+			w.AddTransformers([]transformer.EventTransformerInitializer{fakeTransformer.FakeTransformerInitializer})
+			repository.SetMissingHeaders([]core.Header{fakes.FakeHeader})
+			mockTransactionSyncer := &fakes.MockTransactionSyncer{}
+			w.Syncer = mockTransactionSyncer
+
+			err := w.Execute(constants.HeaderMissing)
+
+			Expect(err).NotTo(HaveOccurred())
+			Expect(mockTransactionSyncer.SyncTransactionsCalled).To(BeTrue())
+		})
+
+		It("returns error if syncing transactions fails", func() {
+			fakeTransformer := &mocks.MockTransformer{}
+			w.AddTransformers([]transformer.EventTransformerInitializer{fakeTransformer.FakeTransformerInitializer})
+			repository.SetMissingHeaders([]core.Header{fakes.FakeHeader})
+			mockTransactionSyncer := &fakes.MockTransactionSyncer{}
+			mockTransactionSyncer.SyncTransactionsError = fakes.FakeError
+			w.Syncer = mockTransactionSyncer
+
+			err := w.Execute(constants.HeaderMissing)
+
+			Expect(err).To(HaveOccurred())
+			Expect(err).To(MatchError(fakes.FakeError))
+		})
+
 		It("executes each transformer", func() {
 			fakeTransformer := &mocks.MockTransformer{}
 			w.AddTransformers([]transformer.EventTransformerInitializer{fakeTransformer.FakeTransformerInitializer})

pkg/contract_watcher/full/retriever/block_retriever_test.go

@@ -40,7 +40,7 @@ var _ = Describe("Block Retriever", func() {
 	var block1 = core.Block{
 		Hash:         "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad123ert",
 		Number:       1,
-		Transactions: []core.Transaction{},
+		Transactions: []core.TransactionModel{},
 	}
 
 	BeforeEach(func() {
@@ -63,7 +63,7 @@ var _ = Describe("Block Retriever", func() {
 			block2 := core.Block{
 				Hash:   "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad123ert",
 				Number: 2,
-				Transactions: []core.Transaction{{
+				Transactions: []core.TransactionModel{{
 					Hash:     "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad6546ae",
 					GasPrice: 0,
 					GasLimit: 0,
@@ -83,7 +83,7 @@ var _ = Describe("Block Retriever", func() {
 			block3 := core.Block{
 				Hash:   "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad456yui",
 				Number: 3,
-				Transactions: []core.Transaction{{
+				Transactions: []core.TransactionModel{{
 					Hash:     "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad234hfs",
 					GasPrice: 0,
 					GasLimit: 0,
@@ -127,7 +127,7 @@ var _ = Describe("Block Retriever", func() {
 			block2 := core.Block{
 				Hash:   "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad123ert",
 				Number: 2,
-				Transactions: []core.Transaction{{
+				Transactions: []core.TransactionModel{{
 					Hash:     "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad6546ae",
 					GasPrice: 0,
 					GasLimit: 0,
@@ -158,7 +158,7 @@ var _ = Describe("Block Retriever", func() {
 			block3 := core.Block{
 				Hash:   "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad456yui",
 				Number: 3,
-				Transactions: []core.Transaction{{
+				Transactions: []core.TransactionModel{{
 					Hash:     "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad234hfs",
 					GasPrice: 0,
 					GasLimit: 0,
@@ -202,13 +202,13 @@ var _ = Describe("Block Retriever", func() {
 			block2 := core.Block{
 				Hash:         "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad123ert",
 				Number:       2,
-				Transactions: []core.Transaction{},
+				Transactions: []core.TransactionModel{},
 			}
 
 			block3 := core.Block{
 				Hash:         "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad456yui",
 				Number:       3,
-				Transactions: []core.Transaction{},
+				Transactions: []core.TransactionModel{},
 			}
 
 			_, insertErrOne := blockRepository.CreateOrUpdateBlock(block1)
@@ -228,13 +228,13 @@ var _ = Describe("Block Retriever", func() {
 			block2 := core.Block{
 				Hash:         "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad123ert",
 				Number:       2,
-				Transactions: []core.Transaction{},
+				Transactions: []core.TransactionModel{},
 			}
 
 			block3 := core.Block{
 				Hash:         "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad456yui",
 				Number:       3,
-				Transactions: []core.Transaction{},
+				Transactions: []core.TransactionModel{},
 			}
 
 			_, insertErrOne := blockRepository.CreateOrUpdateBlock(block1)

pkg/contract_watcher/shared/helpers/test_helpers/mocks/entities.go

@@ -33,7 +33,7 @@ import (
 var TransferBlock1 = core.Block{
 	Hash:   "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad123ert",
 	Number: 6194633,
-	Transactions: []core.Transaction{{
+	Transactions: []core.TransactionModel{{
 		GasLimit: 0,
 		GasPrice: 0,
 		Hash:     "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad654aaa",
@@ -63,7 +63,7 @@ var TransferBlock1 = core.Block{
 var TransferBlock2 = core.Block{
 	Hash:   "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad123ooo",
 	Number: 6194634,
-	Transactions: []core.Transaction{{
+	Transactions: []core.TransactionModel{{
 		GasLimit: 0,
 		GasPrice: 0,
 		Hash:     "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad654eee",
@@ -93,7 +93,7 @@ var TransferBlock2 = core.Block{
 var NewOwnerBlock1 = core.Block{
 	Hash:   "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad123ppp",
 	Number: 6194635,
-	Transactions: []core.Transaction{{
+	Transactions: []core.TransactionModel{{
 		GasLimit: 0,
 		GasPrice: 0,
 		Hash:     "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad654bbb",
@@ -123,7 +123,7 @@ var NewOwnerBlock1 = core.Block{
 var NewOwnerBlock2 = core.Block{
 	Hash:   "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad123ggg",
 	Number: 6194636,
-	Transactions: []core.Transaction{{
+	Transactions: []core.TransactionModel{{
 		GasLimit: 0,
 		GasPrice: 0,
 		Hash:     "0x135391a0962a63944e5908e6fedfff90fb4be3e3290a21017861099bad654lll",

pkg/core/block.go

@@ -30,7 +30,7 @@ type Block struct {
 	ParentHash   string  `db:"parenthash"`
 	Size         string  `db:"size"`
 	Time         int64   `db:"time"`
-	Transactions []Transaction
+	Transactions []TransactionModel
 	UncleHash    string  `db:"uncle_hash"`
 	UnclesReward float64 `db:"uncles_reward"`
 }

pkg/core/blockchain.go

@@ -17,6 +17,7 @@
 package core
 
 import (
+	"github.com/ethereum/go-ethereum/common"
 	"math/big"
 
 	"github.com/ethereum/go-ethereum"
@@ -26,10 +27,11 @@ import (
 type BlockChain interface {
 	ContractDataFetcher
 	GetBlockByNumber(blockNumber int64) (Block, error)
+	GetEthLogsWithCustomQuery(query ethereum.FilterQuery) ([]types.Log, error)
 	GetHeaderByNumber(blockNumber int64) (Header, error)
 	GetHeaderByNumbers(blockNumbers []int64) ([]Header, error)
 	GetLogs(contract Contract, startingBlockNumber *big.Int, endingBlockNumber *big.Int) ([]Log, error)
-	GetEthLogsWithCustomQuery(query ethereum.FilterQuery) ([]types.Log, error)
+	GetTransactions(transactionHashes []common.Hash) ([]TransactionModel, error)
 	LastBlock() (*big.Int, error)
 	Node() Node
 }

pkg/core/contract.go

@@ -19,5 +19,5 @@ package core
 type Contract struct {
 	Abi          string
 	Hash         string
-	Transactions []Transaction
+	Transactions []TransactionModel
 }

pkg/core/transaction.go

@@ -16,8 +16,8 @@
 
 package core
 
-type Transaction struct {
+type TransactionModel struct {
-	Data     string `db:"input_data"`
+	Data     []byte `db:"input_data"`
 	From     string `db:"tx_from"`
 	GasLimit uint64
 	GasPrice int64
@@ -29,3 +29,18 @@ type Transaction struct {
 	TxIndex int64  `db:"tx_index"`
 	Value   string
 }
+
+type RpcTransaction struct {
+	Nonce            string `json:"nonce"`
+	GasPrice         string `json:"gasPrice"`
+	GasLimit         string `json:"gas"`
+	Recipient        string `json:"to"`
+	Amount           string `json:"value"`
+	Payload          []byte `json:"input"`
+	V                string `json:"v"`
+	R                string `json:"r"`
+	S                string `json:"s"`
+	Hash             string
+	From             string
+	TransactionIndex string `json:"transactionIndex"`
+}

pkg/datastore/errors.go

@@ -0,0 +1,19 @@
+package datastore
+
+import "fmt"
+
+var ErrBlockDoesNotExist = func(blockNumber int64) error {
+	return fmt.Errorf("Block number %d does not exist", blockNumber)
+}
+
+var ErrContractDoesNotExist = func(contractHash string) error {
+	return fmt.Errorf("Contract %v does not exist", contractHash)
+}
+
+var ErrFilterDoesNotExist = func(name string) error {
+	return fmt.Errorf("filter %s does not exist", name)
+}
+
+var ErrReceiptDoesNotExist = func(txHash string) error {
+	return fmt.Errorf("Receipt for tx: %v does not exist", txHash)
+}

pkg/datastore/postgres/postgres_test.go

@@ -88,7 +88,7 @@ var _ = Describe("Postgres DB", func() {
 		badBlock := core.Block{
 			Number:       123,
 			Nonce:        badNonce,
-			Transactions: []core.Transaction{},
+			Transactions: []core.TransactionModel{},
 		}
 		node := core.Node{GenesisBlock: "GENESIS", NetworkID: 1, ID: "x123", ClientName: "geth"}
 		db := test_config.NewTestDB(node)
@@ -146,10 +146,10 @@ var _ = Describe("Postgres DB", func() {
 	It("does not commit block or transactions if transaction is invalid", func() {
 		//badHash violates db To field length
 		badHash := fmt.Sprintf("x %s", strings.Repeat("1", 100))
-		badTransaction := core.Transaction{To: badHash}
+		badTransaction := core.TransactionModel{To: badHash}
 		block := core.Block{
 			Number:       123,
-			Transactions: []core.Transaction{badTransaction},
+			Transactions: []core.TransactionModel{badTransaction},
 		}
 		node := core.Node{GenesisBlock: "GENESIS", NetworkID: 1, ID: "x123", ClientName: "geth"}
 		db, _ := postgres.NewDB(test_config.DBConfig, node)

pkg/datastore/postgres/repositories/block_repository.go

@@ -160,7 +160,7 @@ func (blockRepository BlockRepository) insertBlock(block core.Block) (int64, err
 	return blockId, nil
 }
 
-func (blockRepository BlockRepository) createTransactions(tx *sqlx.Tx, blockId int64, transactions []core.Transaction) error {
+func (blockRepository BlockRepository) createTransactions(tx *sqlx.Tx, blockId int64, transactions []core.TransactionModel) error {
 	for _, transaction := range transactions {
 		err := blockRepository.createTransaction(tx, blockId, transaction)
 		if err != nil {
@@ -180,7 +180,7 @@ func nullStringToZero(s string) string {
 	return s
 }
 
-func (blockRepository BlockRepository) createTransaction(tx *sqlx.Tx, blockId int64, transaction core.Transaction) error {
+func (blockRepository BlockRepository) createTransaction(tx *sqlx.Tx, blockId int64, transaction core.TransactionModel) error {
 	_, err := tx.Exec(
 		`INSERT INTO full_sync_transactions
        (block_id, gaslimit, gasprice, hash, input_data, nonce, raw, tx_from, tx_index, tx_to, "value")
@@ -205,11 +205,11 @@ func (blockRepository BlockRepository) createTransaction(tx *sqlx.Tx, blockId in
 	return nil
 }
 
-func hasLogs(transaction core.Transaction) bool {
+func hasLogs(transaction core.TransactionModel) bool {
 	return len(transaction.Receipt.Logs) > 0
 }
 
-func hasReceipt(transaction core.Transaction) bool {
+func hasReceipt(transaction core.TransactionModel) bool {
 	return transaction.Receipt.TxHash != ""
 }
 
@@ -302,10 +302,10 @@ func (blockRepository BlockRepository) loadBlock(blockRows *sqlx.Row) (core.Bloc
 	return block.Block, nil
 }
 
-func (blockRepository BlockRepository) LoadTransactions(transactionRows *sqlx.Rows) []core.Transaction {
+func (blockRepository BlockRepository) LoadTransactions(transactionRows *sqlx.Rows) []core.TransactionModel {
-	var transactions []core.Transaction
+	var transactions []core.TransactionModel
 	for transactionRows.Next() {
-		var transaction core.Transaction
+		var transaction core.TransactionModel
 		err := transactionRows.StructScan(&transaction)
 		if err != nil {
 			log.Fatal(err)

pkg/datastore/postgres/repositories/block_repository_test.go

@@ -133,7 +133,7 @@ var _ = Describe("Saving blocks", func() {
 	It("saves one transaction associated to the block", func() {
 		block := core.Block{
 			Number:       123,
-			Transactions: []core.Transaction{fakes.FakeTransaction},
+			Transactions: []core.TransactionModel{fakes.FakeTransaction},
 		}
 
 		_, insertErr := blockRepository.CreateOrUpdateBlock(block)
@@ -147,7 +147,7 @@ var _ = Describe("Saving blocks", func() {
 	It("saves two transactions associated to the block", func() {
 		block := core.Block{
 			Number:       123,
-			Transactions: []core.Transaction{fakes.FakeTransaction, fakes.FakeTransaction},
+			Transactions: []core.TransactionModel{fakes.FakeTransaction, fakes.FakeTransaction},
 		}
 
 		_, insertErr := blockRepository.CreateOrUpdateBlock(block)
@@ -163,7 +163,7 @@ var _ = Describe("Saving blocks", func() {
 		blockOne := core.Block{
 			Number: 123,
 			Hash:   "xabc",
-			Transactions: []core.Transaction{
+			Transactions: []core.TransactionModel{
 				fakes.GetFakeTransaction("x123", core.Receipt{}),
 				fakes.GetFakeTransaction("x345", core.Receipt{}),
 			},
@@ -171,7 +171,7 @@ var _ = Describe("Saving blocks", func() {
 		blockTwo := core.Block{
 			Number: 123,
 			Hash:   "xdef",
-			Transactions: []core.Transaction{
+			Transactions: []core.TransactionModel{
 				fakes.GetFakeTransaction("x678", core.Receipt{}),
 				fakes.GetFakeTransaction("x9ab", core.Receipt{}),
 			},
@@ -192,14 +192,14 @@ var _ = Describe("Saving blocks", func() {
 			     but block number + node id is`, func() {
 		blockOne := core.Block{
 			Number: 123,
-			Transactions: []core.Transaction{
+			Transactions: []core.TransactionModel{
 				fakes.GetFakeTransaction("x123", core.Receipt{}),
 				fakes.GetFakeTransaction("x345", core.Receipt{}),
 			},
 		}
 		blockTwo := core.Block{
 			Number: 123,
-			Transactions: []core.Transaction{
+			Transactions: []core.TransactionModel{
 				fakes.GetFakeTransaction("x678", core.Receipt{}),
 				fakes.GetFakeTransaction("x9ab", core.Receipt{}),
 			},
@@ -256,8 +256,8 @@ var _ = Describe("Saving blocks", func() {
 		var raw bytes.Buffer
 		rlpErr := gethTransaction.EncodeRLP(&raw)
 		Expect(rlpErr).NotTo(HaveOccurred())
-		transaction := core.Transaction{
+		transaction := core.TransactionModel{
-			Data:     inputData,
+			Data:     common.Hex2Bytes(inputData),
 			From:     from,
 			GasLimit: gasLimit,
 			GasPrice: gasPrice,
@@ -271,7 +271,7 @@ var _ = Describe("Saving blocks", func() {
 		}
 		block := core.Block{
 			Number:       123,
-			Transactions: []core.Transaction{transaction},
+			Transactions: []core.TransactionModel{transaction},
 		}
 
 		_, insertErr := blockRepository.CreateOrUpdateBlock(block)

pkg/datastore/postgres/repositories/contract_repository_test.go

@@ -73,24 +73,26 @@ var _ = Describe("Creating contracts", func() {
 		blockRepository = repositories.NewBlockRepository(db)
 		block := core.Block{
 			Number: 123,
-			Transactions: []core.Transaction{
+			Transactions: []core.TransactionModel{
 				{Hash: "TRANSACTION1", To: "x123", Value: "0"},
 				{Hash: "TRANSACTION2", To: "x345", Value: "0"},
 				{Hash: "TRANSACTION3", To: "x123", Value: "0"},
 			},
 		}
-		blockRepository.CreateOrUpdateBlock(block)
+		_, insertBlockErr := blockRepository.CreateOrUpdateBlock(block)
+		Expect(insertBlockErr).NotTo(HaveOccurred())
 
-		contractRepository.CreateContract(core.Contract{Hash: "x123"})
+		insertContractErr := contractRepository.CreateContract(core.Contract{Hash: "x123"})
+		Expect(insertContractErr).NotTo(HaveOccurred())
 		contract, err := contractRepository.GetContract("x123")
 		Expect(err).ToNot(HaveOccurred())
 		sort.Slice(contract.Transactions, func(i, j int) bool {
 			return contract.Transactions[i].Hash < contract.Transactions[j].Hash
 		})
 		Expect(contract.Transactions).To(
-			Equal([]core.Transaction{
+			Equal([]core.TransactionModel{
-				{Hash: "TRANSACTION1", To: "x123", Value: "0"},
+				{Data: []byte{}, Hash: "TRANSACTION1", To: "x123", Value: "0"},
-				{Hash: "TRANSACTION3", To: "x123", Value: "0"},
+				{Data: []byte{}, Hash: "TRANSACTION3", To: "x123", Value: "0"},
 			}))
 	})
 

pkg/datastore/postgres/repositories/header_repository.go

@@ -49,11 +49,13 @@ func (repository HeaderRepository) CreateOrUpdateHeader(header core.Header) (int
 	return 0, ErrValidHeaderExists
 }
 
-func (repository HeaderRepository) CreateTransaction(headerID int64, transaction core.Transaction) error {
+func (repository HeaderRepository) CreateTransaction(headerID int64, transaction core.TransactionModel) error {
 	_, err := repository.database.Exec(`INSERT INTO public.light_sync_transactions
-		(header_id, hash, tx_to, tx_from, tx_index) VALUES ($1, $2, $3, $4, $5)
+		(header_id, hash, gaslimit, gasprice, input_data, nonce, raw, tx_from, tx_index, tx_to, "value") 
-		ON CONFLICT DO NOTHING`,
+		VALUES ($1, $2, $3::NUMERIC, $4::NUMERIC, $5, $6::NUMERIC, $7, $8, $9::NUMERIC, $10, $11::NUMERIC)
-		headerID, transaction.Hash, transaction.To, transaction.From, transaction.TxIndex)
+		ON CONFLICT DO NOTHING`, headerID, transaction.Hash, transaction.GasLimit, transaction.GasPrice,
+		transaction.Data, transaction.Nonce, transaction.Raw, transaction.From, transaction.TxIndex, transaction.To,
+		transaction.Value)
 	return err
 }
 

pkg/datastore/postgres/repositories/header_repository_test.go

@@ -188,18 +188,26 @@ var _ = Describe("Block header repository", func() {
 			toAddress := common.HexToAddress("0x5678")
 			txHash := common.HexToHash("0x9876")
 			txIndex := big.NewInt(123)
-			transaction := core.Transaction{
+			transaction := core.TransactionModel{
+				Data:     []byte{},
 				From:     fromAddress.Hex(),
+				GasLimit: 0,
+				GasPrice: 0,
 				Hash:     txHash.Hex(),
+				Nonce:    0,
+				Raw:      []byte{},
 				To:       toAddress.Hex(),
 				TxIndex:  txIndex.Int64(),
+				Value:    "0",
 			}
 
 			insertErr := repo.CreateTransaction(headerID, transaction)
 
 			Expect(insertErr).NotTo(HaveOccurred())
-			var dbTransaction core.Transaction
+			var dbTransaction core.TransactionModel
-			err = db.Get(&dbTransaction, `SELECT hash, tx_from, tx_to, tx_index FROM public.light_sync_transactions WHERE header_id = $1`, headerID)
+			err = db.Get(&dbTransaction,
+				`SELECT hash, gaslimit, gasprice, input_data, nonce, raw, tx_from, tx_index, tx_to, "value"
+				FROM public.light_sync_transactions WHERE header_id = $1`, headerID)
 			Expect(err).NotTo(HaveOccurred())
 			Expect(dbTransaction).To(Equal(transaction))
 		})
@@ -211,11 +219,18 @@ var _ = Describe("Block header repository", func() {
 			toAddress := common.HexToAddress("0x5678")
 			txHash := common.HexToHash("0x9876")
 			txIndex := big.NewInt(123)
-			transaction := core.Transaction{
+			transaction := core.TransactionModel{
+				Data:     []byte{},
 				From:     fromAddress.Hex(),
+				GasLimit: 0,
+				GasPrice: 0,
 				Hash:     txHash.Hex(),
+				Nonce:    0,
+				Raw:      []byte{},
+				Receipt:  core.Receipt{},
 				To:       toAddress.Hex(),
 				TxIndex:  txIndex.Int64(),
+				Value:    "0",
 			}
 
 			insertErr := repo.CreateTransaction(headerID, transaction)
@@ -224,8 +239,10 @@ var _ = Describe("Block header repository", func() {
 			insertTwoErr := repo.CreateTransaction(headerID, transaction)
 			Expect(insertTwoErr).NotTo(HaveOccurred())
 
-			var dbTransactions []core.Transaction
+			var dbTransactions []core.TransactionModel
-			err = db.Select(&dbTransactions, `SELECT hash, tx_from, tx_to, tx_index FROM public.light_sync_transactions WHERE header_id = $1`, headerID)
+			err = db.Select(&dbTransactions,
+				`SELECT hash, gaslimit, gasprice, input_data, nonce, raw, tx_from, tx_index, tx_to, "value"
+				FROM public.light_sync_transactions WHERE header_id = $1`, headerID)
 			Expect(err).NotTo(HaveOccurred())
 			Expect(len(dbTransactions)).To(Equal(1))
 		})

pkg/datastore/postgres/repositories/logs_repository_test.go

@@ -204,7 +204,7 @@ var _ = Describe("Logs Repository", func() {
 			}
 			transaction := fakes.GetFakeTransaction(receipt.TxHash, receipt)
 
-			block := core.Block{Transactions: []core.Transaction{transaction}}
+			block := core.Block{Transactions: []core.TransactionModel{transaction}}
 			_, err := blockRepository.CreateOrUpdateBlock(block)
 			Expect(err).To(Not(HaveOccurred()))
 			retrievedLogs, err := logsRepository.GetLogs("0x99041f808d598b782d5a3e498681c2452a31da08", 4745407)

pkg/datastore/postgres/repositories/receipt_repository_test.go

@@ -27,7 +27,7 @@ import (
 	"github.com/vulcanize/vulcanizedb/test_config"
 )
 
-var _ = Describe("Receipts Repository", func() {
+var _ = Describe("Receipt Repository", func() {
 	var blockRepository datastore.BlockRepository
 	var logRepository datastore.LogRepository
 	var receiptRepository datastore.ReceiptRepository
@@ -119,7 +119,7 @@ var _ = Describe("Receipts Repository", func() {
 			}
 
 			transaction := fakes.GetFakeTransaction(expected.TxHash, expected)
-			block := core.Block{Transactions: []core.Transaction{transaction}}
+			block := core.Block{Transactions: []core.TransactionModel{transaction}}
 
 			_, err := blockRepository.CreateOrUpdateBlock(block)
 
@@ -148,7 +148,7 @@ var _ = Describe("Receipts Repository", func() {
 			transaction := fakes.GetFakeTransaction(receipt.TxHash, receipt)
 
 			block := core.Block{
-				Transactions: []core.Transaction{transaction},
+				Transactions: []core.TransactionModel{transaction},
 			}
 
 			_, err := blockRepository.CreateOrUpdateBlock(block)

pkg/datastore/repository.go

@@ -17,16 +17,10 @@
 package datastore
 
 import (
-	"fmt"
-
 	"github.com/vulcanize/vulcanizedb/pkg/core"
 	"github.com/vulcanize/vulcanizedb/pkg/filters"
 )
 
-var ErrBlockDoesNotExist = func(blockNumber int64) error {
-	return fmt.Errorf("Block number %d does not exist", blockNumber)
-}
-
 type BlockRepository interface {
 	CreateOrUpdateBlock(block core.Block) (int64, error)
 	GetBlock(blockNumber int64) (core.Block, error)
@@ -34,20 +28,12 @@ type BlockRepository interface {
 	SetBlocksStatus(chainHead int64) error
 }
 
-var ErrContractDoesNotExist = func(contractHash string) error {
-	return fmt.Errorf("Contract %v does not exist", contractHash)
-}
-
 type ContractRepository interface {
 	CreateContract(contract core.Contract) error
 	GetContract(contractHash string) (core.Contract, error)
 	ContractExists(contractHash string) (bool, error)
 }
 
-var ErrFilterDoesNotExist = func(name string) error {
-	return fmt.Errorf("filter %s does not exist", name)
-}
-
 type FilterRepository interface {
 	CreateFilter(filter filters.LogFilter) error
 	GetFilter(name string) (filters.LogFilter, error)
@@ -55,7 +41,7 @@ type FilterRepository interface {
 
 type HeaderRepository interface {
 	CreateOrUpdateHeader(header core.Header) (int64, error)
-	CreateTransaction(headerID int64, transaction core.Transaction) error
+	CreateTransaction(headerID int64, transaction core.TransactionModel) error
 	GetHeader(blockNumber int64) (core.Header, error)
 	MissingBlockNumbers(startingBlockNumber, endingBlockNumber int64, nodeID string) ([]int64, error)
 }
@@ -65,10 +51,6 @@ type LogRepository interface {
 	GetLogs(address string, blockNumber int64) ([]core.Log, error)
 }
 
-var ErrReceiptDoesNotExist = func(txHash string) error {
-	return fmt.Errorf("Receipt for tx: %v does not exist", txHash)
-}
-
 type ReceiptRepository interface {
 	CreateReceiptsAndLogs(blockId int64, receipts []core.Receipt) error
 	CreateReceipt(blockId int64, receipt core.Receipt) (int64, error)

pkg/fakes/data.go

@@ -29,6 +29,7 @@ import (
 )
 
 var (
+	FakeAddress   = common.HexToAddress("0x1234567890abcdef")
 	FakeError     = errors.New("failed")
 	FakeHash      = common.BytesToHash([]byte{1, 2, 3, 4, 5})
 	fakeTimestamp = int64(111111111)
@@ -53,8 +54,8 @@ func GetFakeHeader(blockNumber int64) core.Header {
 var fakeTransaction types.Transaction
 var rawTransaction bytes.Buffer
 var _ = fakeTransaction.EncodeRLP(&rawTransaction)
-var FakeTransaction = core.Transaction{
+var FakeTransaction = core.TransactionModel{
-	Data:     "",
+	Data:     []byte{},
 	From:     "",
 	GasLimit: 0,
 	GasPrice: 0,
@@ -67,15 +68,15 @@ var FakeTransaction = core.Transaction{
 	Value:    "0",
 }
 
-func GetFakeTransaction(hash string, receipt core.Receipt) core.Transaction {
+func GetFakeTransaction(hash string, receipt core.Receipt) core.TransactionModel {
 	gethTransaction := types.Transaction{}
 	var raw bytes.Buffer
 	err := gethTransaction.EncodeRLP(&raw)
 	if err != nil {
 		panic("failed to marshal transaction creating test fake")
 	}
-	return core.Transaction{
+	return core.TransactionModel{
-		Data:     "",
+		Data:     []byte{},
 		From:     "",
 		GasLimit: 0,
 		GasPrice: 0,

pkg/fakes/mock_blockchain.go

@@ -17,6 +17,7 @@
 package fakes
 
 import (
+	"github.com/ethereum/go-ethereum/common"
 	"math/big"
 
 	"github.com/ethereum/go-ethereum"
@@ -35,11 +36,15 @@ type MockBlockChain struct {
 	fetchContractDataPassedResult      interface{}
 	fetchContractDataPassedBlockNumber int64
 	getBlockByNumberErr                error
+	GetTransactionsCalled              bool
+	GetTransactionsError               error
+	GetTransactionsPassedHashes        []common.Hash
 	logQuery                           ethereum.FilterQuery
 	logQueryErr                        error
 	logQueryReturnLogs                 []types.Log
 	lastBlock                          *big.Int
 	node                               core.Node
+	Transactions                       []core.TransactionModel
 }
 
 func NewMockBlockChain() *MockBlockChain {
@@ -104,6 +109,12 @@ func (chain *MockBlockChain) GetLogs(contract core.Contract, startingBlockNumber
 	return []core.Log{}, nil
 }
 
+func (chain *MockBlockChain) GetTransactions(transactionHashes []common.Hash) ([]core.TransactionModel, error) {
+	chain.GetTransactionsCalled = true
+	chain.GetTransactionsPassedHashes = transactionHashes
+	return chain.Transactions, chain.GetTransactionsError
+}
+
 func (chain *MockBlockChain) CallContract(contractHash string, input []byte, blockNumber *big.Int) ([]byte, error) {
 	return []byte{}, nil
 }

pkg/fakes/mock_header_repository.go

@@ -27,6 +27,8 @@ type MockHeaderRepository struct {
 	createOrUpdateHeaderErr                error
 	createOrUpdateHeaderPassedBlockNumbers []int64
 	createOrUpdateHeaderReturnID           int64
+	CreateTransactionCalled                bool
+	CreateTransactionError                 error
 	getHeaderError                         error
 	getHeaderReturnBlockHash               string
 	missingBlockNumbers                    []int64
@@ -56,8 +58,9 @@ func (repository *MockHeaderRepository) CreateOrUpdateHeader(header core.Header)
 	return repository.createOrUpdateHeaderReturnID, repository.createOrUpdateHeaderErr
 }
 
-func (repository *MockHeaderRepository) CreateTransaction(headerID int64, transaction core.Transaction) error {
+func (repository *MockHeaderRepository) CreateTransaction(headerID int64, transaction core.TransactionModel) error {
-	panic("implement me")
+	repository.CreateTransactionCalled = true
+	return repository.CreateTransactionError
 }
 
 func (repository *MockHeaderRepository) GetHeader(blockNumber int64) (core.Header, error) {

pkg/fakes/mock_transaction_converter.go

@@ -18,39 +18,30 @@ package fakes
 
 import (
 	"github.com/ethereum/go-ethereum/core/types"
-	. "github.com/onsi/gomega"
-
 	"github.com/vulcanize/vulcanizedb/pkg/core"
 )
 
 type MockTransactionConverter struct {
-	convertTransactionsToCoreCalled             bool
+	ConvertHeaderTransactionIndexToIntCalled  bool
-	convertTransactionsToCorePassedBlock        *types.Block
+	ConvertBlockTransactionsToCoreCalled      bool
-	convertTransactionsToCoreReturnTransactions []core.Transaction
+	ConvertBlockTransactionsToCorePassedBlock *types.Block
-	convertTransactionsToCoreReturnError        error
 }
 
 func NewMockTransactionConverter() *MockTransactionConverter {
 	return &MockTransactionConverter{
-		convertTransactionsToCoreCalled:             false,
+		ConvertHeaderTransactionIndexToIntCalled:  false,
-		convertTransactionsToCorePassedBlock:        nil,
+		ConvertBlockTransactionsToCoreCalled:      false,
-		convertTransactionsToCoreReturnTransactions: nil,
+		ConvertBlockTransactionsToCorePassedBlock: nil,
-		convertTransactionsToCoreReturnError:        nil,
 	}
 }
 
-func (mtc *MockTransactionConverter) SetConvertTransactionsToCoreReturnVals(transactions []core.Transaction, err error) {
+func (converter *MockTransactionConverter) ConvertBlockTransactionsToCore(gethBlock *types.Block) ([]core.TransactionModel, error) {
-	mtc.convertTransactionsToCoreReturnTransactions = transactions
+	converter.ConvertBlockTransactionsToCoreCalled = true
-	mtc.convertTransactionsToCoreReturnError = err
+	converter.ConvertBlockTransactionsToCorePassedBlock = gethBlock
+	return []core.TransactionModel{}, nil
 }
 
-func (mtc *MockTransactionConverter) ConvertTransactionsToCore(gethBlock *types.Block) ([]core.Transaction, error) {
+func (converter *MockTransactionConverter) ConvertRpcTransactionsToModels(transactions []core.RpcTransaction) ([]core.TransactionModel, error) {
-	mtc.convertTransactionsToCoreCalled = true
+	converter.ConvertHeaderTransactionIndexToIntCalled = true
-	mtc.convertTransactionsToCorePassedBlock = gethBlock
+	return nil, nil
-	return mtc.convertTransactionsToCoreReturnTransactions, mtc.convertTransactionsToCoreReturnError
-}
-
-func (mtc *MockTransactionConverter) AssertConvertTransactionsToCoreCalledWith(gethBlock *types.Block) {
-	Expect(mtc.convertTransactionsToCoreCalled).To(BeTrue())
-	Expect(mtc.convertTransactionsToCorePassedBlock).To(Equal(gethBlock))
 }

pkg/fakes/mock_transaction_syncer.go

@@ -0,0 +1,13 @@
+package fakes
+
+import "github.com/ethereum/go-ethereum/core/types"
+
+type MockTransactionSyncer struct {
+	SyncTransactionsCalled bool
+	SyncTransactionsError  error
+}
+
+func (syncer *MockTransactionSyncer) SyncTransactions(headerID int64, logs []types.Log) error {
+	syncer.SyncTransactionsCalled = true
+	return syncer.SyncTransactionsError
+}

pkg/geth/blockchain.go

@@ -18,10 +18,11 @@ package geth
 
 import (
 	"errors"
+	"fmt"
+	"github.com/ethereum/go-ethereum"
 	"math/big"
 	"strconv"
 
-	"github.com/ethereum/go-ethereum"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/ethereum/go-ethereum/core/types"
@@ -42,6 +43,7 @@ type BlockChain struct {
 	headerConverter      vulcCommon.HeaderConverter
 	node                 core.Node
 	rpcClient            core.RpcClient
+	transactionConverter vulcCommon.TransactionConverter
 }
 
 func NewBlockChain(ethClient core.EthClient, rpcClient core.RpcClient, node core.Node, converter vulcCommon.TransactionConverter) *BlockChain {
@@ -51,6 +53,7 @@ func NewBlockChain(ethClient core.EthClient, rpcClient core.RpcClient, node core
 		headerConverter:      vulcCommon.HeaderConverter{},
 		node:                 node,
 		rpcClient:            rpcClient,
+		transactionConverter: converter,
 	}
 }
 
@@ -62,6 +65,14 @@ func (blockChain *BlockChain) GetBlockByNumber(blockNumber int64) (block core.Bl
 	return blockChain.blockConverter.ToCoreBlock(gethBlock)
 }
 
+func (blockChain *BlockChain) GetEthLogsWithCustomQuery(query ethereum.FilterQuery) ([]types.Log, error) {
+	gethLogs, err := blockChain.ethClient.FilterLogs(context.Background(), query)
+	if err != nil {
+		return []types.Log{}, err
+	}
+	return gethLogs, nil
+}
+
 func (blockChain *BlockChain) GetHeaderByNumber(blockNumber int64) (header core.Header, err error) {
 	if blockChain.node.NetworkID == core.KOVAN_NETWORK_ID {
 		return blockChain.getPOAHeader(blockNumber)
@@ -76,49 +87,55 @@ func (blockChain *BlockChain) GetHeaderByNumbers(blockNumbers []int64) (header [
 	return blockChain.getPOWHeaders(blockNumbers)
 }
 
-func (blockChain *BlockChain) getPOWHeader(blockNumber int64) (header core.Header, err error) {
+func (blockChain *BlockChain) GetLogs(contract core.Contract, startingBlockNumber, endingBlockNumber *big.Int) ([]core.Log, error) {
-	gethHeader, err := blockChain.ethClient.HeaderByNumber(context.Background(), big.NewInt(blockNumber))
+	if endingBlockNumber == nil {
-	if err != nil {
+		endingBlockNumber = startingBlockNumber
-		return header, err
 	}
-	return blockChain.headerConverter.Convert(gethHeader, gethHeader.Hash().String()), nil
+	contractAddress := common.HexToAddress(contract.Hash)
+	fc := ethereum.FilterQuery{
+		FromBlock: startingBlockNumber,
+		ToBlock:   endingBlockNumber,
+		Addresses: []common.Address{contractAddress},
+		Topics:    nil,
+	}
+	gethLogs, err := blockChain.GetEthLogsWithCustomQuery(fc)
+	if err != nil {
+		return []core.Log{}, err
+	}
+	logs := vulcCommon.ToCoreLogs(gethLogs)
+	return logs, nil
 }
 
-func (blockChain *BlockChain) getPOWHeaders(blockNumbers []int64) (headers []core.Header, err error) {
+func (blockChain *BlockChain) GetTransactions(transactionHashes []common.Hash) ([]core.TransactionModel, error) {
+	numTransactions := len(transactionHashes)
 	var batch []client.BatchElem
-	var POWHeaders [MAX_BATCH_SIZE]types.Header
+	transactions := make([]core.RpcTransaction, numTransactions)
-	includeTransactions := false
-
-	for index, blockNumber := range blockNumbers {
-
-		if index >= MAX_BATCH_SIZE {
-			break
-		}
-
-		blockNumberArg := hexutil.EncodeBig(big.NewInt(blockNumber))
 
+	for index, transactionHash := range transactionHashes {
 		batchElem := client.BatchElem{
-			Method: "eth_getBlockByNumber",
+			Method: "eth_getTransactionByHash",
-			Result: &POWHeaders[index],
+			Result: &transactions[index],
-			Args:   []interface{}{blockNumberArg, includeTransactions},
+			Args:   []interface{}{transactionHash},
 		}
-
 		batch = append(batch, batchElem)
 	}
 
-	err = blockChain.rpcClient.BatchCall(batch)
+	rpcErr := blockChain.rpcClient.BatchCall(batch)
-	if err != nil {
+	if rpcErr != nil {
-		return headers, err
+		fmt.Println("rpc err")
+		return []core.TransactionModel{}, rpcErr
 	}
 
-	for _, POWHeader := range POWHeaders {
+	return blockChain.transactionConverter.ConvertRpcTransactionsToModels(transactions)
-		if POWHeader.Number != nil {
+}
-			header := blockChain.headerConverter.Convert(&POWHeader, POWHeader.Hash().String())
-			headers = append(headers, header)
-		}
-	}
 
-	return headers, err
+func (blockChain *BlockChain) LastBlock() (*big.Int, error) {
+	block, err := blockChain.ethClient.HeaderByNumber(context.Background(), nil)
+	return block.Number, err
+}
+
+func (blockChain *BlockChain) Node() core.Node {
+	return blockChain.node
 }
 
 func (blockChain *BlockChain) getPOAHeader(blockNumber int64) (header core.Header, err error) {
@@ -204,38 +221,47 @@ func (blockChain *BlockChain) getPOAHeaders(blockNumbers []int64) (headers []cor
 	return headers, err
 }
 
-func (blockChain *BlockChain) GetLogs(contract core.Contract, startingBlockNumber, endingBlockNumber *big.Int) ([]core.Log, error) {
+func (blockChain *BlockChain) getPOWHeader(blockNumber int64) (header core.Header, err error) {
-	if endingBlockNumber == nil {
+	gethHeader, err := blockChain.ethClient.HeaderByNumber(context.Background(), big.NewInt(blockNumber))
-		endingBlockNumber = startingBlockNumber
-	}
-	contractAddress := common.HexToAddress(contract.Hash)
-	fc := ethereum.FilterQuery{
-		FromBlock: startingBlockNumber,
-		ToBlock:   endingBlockNumber,
-		Addresses: []common.Address{contractAddress},
-		Topics:    nil,
-	}
-	gethLogs, err := blockChain.GetEthLogsWithCustomQuery(fc)
 	if err != nil {
-		return []core.Log{}, err
+		return header, err
 	}
-	logs := vulcCommon.ToCoreLogs(gethLogs)
+	return blockChain.headerConverter.Convert(gethHeader, gethHeader.Hash().String()), nil
-	return logs, nil
 }
 
-func (blockChain *BlockChain) GetEthLogsWithCustomQuery(query ethereum.FilterQuery) ([]types.Log, error) {
+func (blockChain *BlockChain) getPOWHeaders(blockNumbers []int64) (headers []core.Header, err error) {
-	gethLogs, err := blockChain.ethClient.FilterLogs(context.Background(), query)
+	var batch []client.BatchElem
+	var POWHeaders [MAX_BATCH_SIZE]types.Header
+	includeTransactions := false
+
+	for index, blockNumber := range blockNumbers {
+
+		if index >= MAX_BATCH_SIZE {
+			break
+		}
+
+		blockNumberArg := hexutil.EncodeBig(big.NewInt(blockNumber))
+
+		batchElem := client.BatchElem{
+			Method: "eth_getBlockByNumber",
+			Result: &POWHeaders[index],
+			Args:   []interface{}{blockNumberArg, includeTransactions},
+		}
+
+		batch = append(batch, batchElem)
+	}
+
+	err = blockChain.rpcClient.BatchCall(batch)
 	if err != nil {
-		return []types.Log{}, err
+		return headers, err
 	}
-	return gethLogs, nil
-}
 
-func (blockChain *BlockChain) LastBlock() (*big.Int, error) {
+	for _, POWHeader := range POWHeaders {
-	block, err := blockChain.ethClient.HeaderByNumber(context.Background(), nil)
+		if POWHeader.Number != nil {
-	return block.Number, err
+			header := blockChain.headerConverter.Convert(&POWHeader, POWHeader.Hash().String())
-}
+			headers = append(headers, header)
+		}
+	}
 
-func (blockChain *BlockChain) Node() core.Node {
+	return headers, err
-	return blockChain.node
 }

pkg/geth/blockchain_test.go

@@ -30,20 +30,23 @@ import (
 	vulcCore "github.com/vulcanize/vulcanizedb/pkg/core"
 	"github.com/vulcanize/vulcanizedb/pkg/fakes"
 	"github.com/vulcanize/vulcanizedb/pkg/geth"
-	"github.com/vulcanize/vulcanizedb/pkg/geth/converters/cold_db"
 )
 
 var _ = Describe("Geth blockchain", func() {
-	var mockClient *fakes.MockEthClient
+	var (
-	var mockRpcClient *fakes.MockRpcClient
+		mockClient               *fakes.MockEthClient
-	var node vulcCore.Node
+		blockChain               *geth.BlockChain
-	var blockChain *geth.BlockChain
+		mockRpcClient            *fakes.MockRpcClient
+		mockTransactionConverter *fakes.MockTransactionConverter
+		node                     vulcCore.Node
+	)
 
 	BeforeEach(func() {
 		mockClient = fakes.NewMockEthClient()
 		mockRpcClient = fakes.NewMockRpcClient()
+		mockTransactionConverter = fakes.NewMockTransactionConverter()
 		node = vulcCore.Node{}
-		blockChain = geth.NewBlockChain(mockClient, mockRpcClient, node, cold_db.NewColdDbTransactionConverter())
+		blockChain = geth.NewBlockChain(mockClient, mockRpcClient, node, mockTransactionConverter)
 	})
 
 	Describe("getting a block", func() {
@@ -89,8 +92,6 @@ var _ = Describe("Geth blockchain", func() {
 			})
 
 			It("fetches headers with multiple blocks", func() {
-				blockChain = geth.NewBlockChain(mockClient, mockRpcClient, node, cold_db.NewColdDbTransactionConverter())
-
 				_, err := blockChain.GetHeaderByNumbers([]int64{100, 99})
 
 				Expect(err).NotTo(HaveOccurred())
@@ -103,7 +104,7 @@ var _ = Describe("Geth blockchain", func() {
 				node.NetworkID = vulcCore.KOVAN_NETWORK_ID
 				blockNumber := hexutil.Big(*big.NewInt(100))
 				mockRpcClient.SetReturnPOAHeader(vulcCore.POAHeader{Number: &blockNumber})
-				blockChain = geth.NewBlockChain(mockClient, mockRpcClient, node, cold_db.NewColdDbTransactionConverter())
+				blockChain = geth.NewBlockChain(mockClient, mockRpcClient, node, fakes.NewMockTransactionConverter())
 
 				_, err := blockChain.GetHeaderByNumber(100)
 
@@ -114,7 +115,7 @@ var _ = Describe("Geth blockchain", func() {
 			It("returns err if rpcClient returns err", func() {
 				node.NetworkID = vulcCore.KOVAN_NETWORK_ID
 				mockRpcClient.SetCallContextErr(fakes.FakeError)
-				blockChain = geth.NewBlockChain(mockClient, mockRpcClient, node, cold_db.NewColdDbTransactionConverter())
+				blockChain = geth.NewBlockChain(mockClient, mockRpcClient, node, fakes.NewMockTransactionConverter())
 
 				_, err := blockChain.GetHeaderByNumber(100)
 
@@ -124,7 +125,7 @@ var _ = Describe("Geth blockchain", func() {
 
 			It("returns error if returned header is empty", func() {
 				node.NetworkID = vulcCore.KOVAN_NETWORK_ID
-				blockChain = geth.NewBlockChain(mockClient, mockRpcClient, node, cold_db.NewColdDbTransactionConverter())
+				blockChain = geth.NewBlockChain(mockClient, mockRpcClient, node, fakes.NewMockTransactionConverter())
 
 				_, err := blockChain.GetHeaderByNumber(100)
 
@@ -136,7 +137,6 @@ var _ = Describe("Geth blockchain", func() {
 				node.NetworkID = vulcCore.KOVAN_NETWORK_ID
 				blockNumber := hexutil.Big(*big.NewInt(100))
 				mockRpcClient.SetReturnPOAHeaders([]vulcCore.POAHeader{{Number: &blockNumber}})
-				blockChain = geth.NewBlockChain(mockClient, mockRpcClient, node, cold_db.NewColdDbTransactionConverter())
 
 				_, err := blockChain.GetHeaderByNumbers([]int64{100, 99})
 
@@ -216,6 +216,22 @@ var _ = Describe("Geth blockchain", func() {
 		})
 	})
 
+	Describe("getting transactions", func() {
+		It("fetches transaction for each hash", func() {
+			_, err := blockChain.GetTransactions([]common.Hash{{}, {}})
+
+			Expect(err).NotTo(HaveOccurred())
+			mockRpcClient.AssertBatchCalledWith("eth_getTransactionByHash", 2)
+		})
+
+		It("converts transaction indexes from hex to int", func() {
+			_, err := blockChain.GetTransactions([]common.Hash{{}, {}})
+
+			Expect(err).NotTo(HaveOccurred())
+			Expect(mockTransactionConverter.ConvertHeaderTransactionIndexToIntCalled).To(BeTrue())
+		})
+	})
+
 	Describe("getting the most recent block number", func() {
 		It("fetches latest header from ethClient", func() {
 			blockNumber := int64(100)

pkg/geth/cold_import/importer_test.go

@@ -81,7 +81,8 @@ var _ = Describe("Geth cold importer", func() {
 
 		mockEthereumDatabase.AssertGetBlockHashCalledWith(blockNumber)
 		mockEthereumDatabase.AssertGetBlockCalledWith(fakeHash, blockNumber)
-		mockTransactionConverter.AssertConvertTransactionsToCoreCalledWith(fakeGethBlock)
+		Expect(mockTransactionConverter.ConvertBlockTransactionsToCoreCalled).To(BeTrue())
+		Expect(mockTransactionConverter.ConvertBlockTransactionsToCorePassedBlock).To(Equal(fakeGethBlock))
 		convertedBlock, err := blockConverter.ToCoreBlock(fakeGethBlock)
 		Expect(err).NotTo(HaveOccurred())
 		mockBlockRepository.AssertCreateOrUpdateBlockCalledWith(convertedBlock)

pkg/geth/converters/cold_db/transaction_converter.go

@@ -18,7 +18,6 @@ package cold_db
 
 import (
 	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/vulcanize/vulcanizedb/pkg/core"
 	"golang.org/x/sync/errgroup"
@@ -31,9 +30,9 @@ func NewColdDbTransactionConverter() *ColdDbTransactionConverter {
 	return &ColdDbTransactionConverter{}
 }
 
-func (cdtc *ColdDbTransactionConverter) ConvertTransactionsToCore(gethBlock *types.Block) ([]core.Transaction, error) {
+func (cdtc *ColdDbTransactionConverter) ConvertBlockTransactionsToCore(gethBlock *types.Block) ([]core.TransactionModel, error) {
 	var g errgroup.Group
-	coreTransactions := make([]core.Transaction, len(gethBlock.Transactions()))
+	coreTransactions := make([]core.TransactionModel, len(gethBlock.Transactions()))
 
 	for gethTransactionIndex, gethTransaction := range gethBlock.Transactions() {
 		transaction := gethTransaction
@@ -55,6 +54,10 @@ func (cdtc *ColdDbTransactionConverter) ConvertTransactionsToCore(gethBlock *typ
 	return coreTransactions, nil
 }
 
+func (cdtc *ColdDbTransactionConverter) ConvertRpcTransactionsToModels(transactions []core.RpcTransaction) ([]core.TransactionModel, error) {
+	panic("converting transaction indexes to integer not supported for cold import")
+}
+
 func getSigner(tx *types.Transaction) types.Signer {
 	v, _, _ := tx.RawSignatureValues()
 	if v.Sign() != 0 && tx.Protected() {
@@ -63,9 +66,8 @@ func getSigner(tx *types.Transaction) types.Signer {
 	return types.HomesteadSigner{}
 }
 
-func transToCoreTrans(transaction *types.Transaction, from *common.Address) core.Transaction {
+func transToCoreTrans(transaction *types.Transaction, from *common.Address) core.TransactionModel {
-	data := hexutil.Encode(transaction.Data())
+	return core.TransactionModel{
-	return core.Transaction{
 		Hash:     transaction.Hash().Hex(),
 		Nonce:    transaction.Nonce(),
 		To:       strings.ToLower(addressToHex(transaction.To())),
@@ -73,7 +75,7 @@ func transToCoreTrans(transaction *types.Transaction, from *common.Address) core
 		GasLimit: transaction.Gas(),
 		GasPrice: transaction.GasPrice().Int64(),
 		Value:    transaction.Value().String(),
-		Data:     data,
+		Data:     transaction.Data(),
 	}
 }
 

pkg/geth/converters/common/block_converter.go

@@ -32,7 +32,7 @@ func NewBlockConverter(transactionConverter TransactionConverter) BlockConverter
 }
 
 func (bc BlockConverter) ToCoreBlock(gethBlock *types.Block) (core.Block, error) {
-	transactions, err := bc.transactionConverter.ConvertTransactionsToCore(gethBlock)
+	transactions, err := bc.transactionConverter.ConvertBlockTransactionsToCore(gethBlock)
 	if err != nil {
 		return core.Block{}, err
 	}

pkg/geth/converters/common/block_converter_test.go

@@ -260,7 +260,8 @@ var _ = Describe("Conversion of GethBlock to core.Block", func() {
 			Expect(err).ToNot(HaveOccurred())
 			Expect(len(coreBlock.Transactions)).To(Equal(1))
 			coreTransaction := coreBlock.Transactions[0]
-			Expect(coreTransaction.Data).To(Equal("0xf7d8c8830000000000000000000000000000000000000000000000000000000000037788000000000000000000000000000000000000000000000000000000000003bd14"))
+			expectedData := common.FromHex("0xf7d8c8830000000000000000000000000000000000000000000000000000000000037788000000000000000000000000000000000000000000000000000000000003bd14")
+			Expect(coreTransaction.Data).To(Equal(expectedData))
 			Expect(coreTransaction.To).To(Equal(gethTransaction.To().Hex()))
 			Expect(coreTransaction.From).To(Equal("0x0000000000000000000000000000000000000123"))
 			Expect(coreTransaction.GasLimit).To(Equal(gethTransaction.Gas()))

pkg/geth/converters/common/transaction_converter.go

@@ -22,5 +22,6 @@ import (
 )
 
 type TransactionConverter interface {
-	ConvertTransactionsToCore(gethBlock *types.Block) ([]core.Transaction, error)
+	ConvertBlockTransactionsToCore(gethBlock *types.Block) ([]core.TransactionModel, error)
+	ConvertRpcTransactionsToModels(transactions []core.RpcTransaction) ([]core.TransactionModel, error)
 }

pkg/geth/converters/rpc/rpc_suite_test.go

@@ -0,0 +1,13 @@
+package rpc_test
+
+import (
+	"testing"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+func TestRpc(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "Rpc Suite")
+}

pkg/geth/converters/rpc/transaction_converter.go

@@ -19,11 +19,13 @@ package rpc
 import (
 	"bytes"
 	"context"
+	"fmt"
 	"log"
+	"math/big"
 	"strings"
 
 	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/ethereum/go-ethereum/rlp"
 	"github.com/ethereum/go-ethereum/core/types"
 	"golang.org/x/sync/errgroup"
 
@@ -35,29 +37,75 @@ type RpcTransactionConverter struct {
 	client core.EthClient
 }
 
+// raw transaction data, required for generating RLP
+type transactionData struct {
+	AccountNonce uint64
+	Price        *big.Int
+	GasLimit     uint64
+	Recipient    *common.Address `rlp:"nil"` // nil means contract creation
+	Amount       *big.Int
+	Payload      []byte
+	V            *big.Int
+	R            *big.Int
+	S            *big.Int
+}
+
 func NewRpcTransactionConverter(client core.EthClient) *RpcTransactionConverter {
 	return &RpcTransactionConverter{client: client}
 }
 
-func (rtc *RpcTransactionConverter) ConvertTransactionsToCore(gethBlock *types.Block) ([]core.Transaction, error) {
+func (converter *RpcTransactionConverter) ConvertRpcTransactionsToModels(transactions []core.RpcTransaction) ([]core.TransactionModel, error) {
+	var results []core.TransactionModel
+	for _, transaction := range transactions {
+		txData, convertErr := getTransactionData(transaction)
+		if convertErr != nil {
+			return nil, convertErr
+		}
+		txRLP, rlpErr := getTransactionRLP(txData)
+		if rlpErr != nil {
+			return nil, rlpErr
+		}
+		txIndex, txIndexErr := hexToBigInt(transaction.TransactionIndex)
+		if txIndexErr != nil {
+			return nil, txIndexErr
+		}
+		transactionModel := core.TransactionModel{
+			Data:     transaction.Payload,
+			From:     transaction.From,
+			GasLimit: txData.GasLimit,
+			GasPrice: txData.Price.Int64(),
+			Hash:     transaction.Hash,
+			Nonce:    txData.AccountNonce,
+			Raw:      txRLP,
+			// NOTE: Light Sync transactions don't include receipt; would require separate RPC call
+			To:      transaction.Recipient,
+			TxIndex: txIndex.Int64(),
+			Value:   txData.Amount.String(),
+		}
+		results = append(results, transactionModel)
+	}
+	return results, nil
+}
+
+func (converter *RpcTransactionConverter) ConvertBlockTransactionsToCore(gethBlock *types.Block) ([]core.TransactionModel, error) {
 	var g errgroup.Group
-	coreTransactions := make([]core.Transaction, len(gethBlock.Transactions()))
+	coreTransactions := make([]core.TransactionModel, len(gethBlock.Transactions()))
 
 	for gethTransactionIndex, gethTransaction := range gethBlock.Transactions() {
 		//https://golang.org/doc/faq#closures_and_goroutines
 		transaction := gethTransaction
 		transactionIndex := uint(gethTransactionIndex)
 		g.Go(func() error {
-			from, err := rtc.client.TransactionSender(context.Background(), transaction, gethBlock.Hash(), transactionIndex)
+			from, err := converter.client.TransactionSender(context.Background(), transaction, gethBlock.Hash(), transactionIndex)
 			if err != nil {
 				log.Println("transaction sender: ", err)
 				return err
 			}
-			coreTransaction, convertErr := transToCoreTrans(transaction, &from, int64(gethTransactionIndex))
+			coreTransaction, convertErr := convertGethTransactionToModel(transaction, &from, int64(gethTransactionIndex))
 			if convertErr != nil {
 				return convertErr
 			}
-			coreTransaction, err = rtc.appendReceiptToTransaction(coreTransaction)
+			coreTransaction, err = converter.appendReceiptToTransaction(coreTransaction)
 			if err != nil {
 				log.Println("receipt: ", err)
 				return err
@@ -73,7 +121,7 @@ func (rtc *RpcTransactionConverter) ConvertTransactionsToCore(gethBlock *types.B
 	return coreTransactions, nil
 }
 
-func (rtc *RpcTransactionConverter) appendReceiptToTransaction(transaction core.Transaction) (core.Transaction, error) {
+func (rtc *RpcTransactionConverter) appendReceiptToTransaction(transaction core.TransactionModel) (core.TransactionModel, error) {
 	gethReceipt, err := rtc.client.TransactionReceipt(context.Background(), common.HexToHash(transaction.Hash))
 	if err != nil {
 		return transaction, err
@@ -83,15 +131,14 @@ func (rtc *RpcTransactionConverter) appendReceiptToTransaction(transaction core.
 	return transaction, nil
 }
 
-func transToCoreTrans(transaction *types.Transaction, from *common.Address, transactionIndex int64) (core.Transaction, error) {
+func convertGethTransactionToModel(transaction *types.Transaction, from *common.Address, transactionIndex int64) (core.TransactionModel, error) {
-	data := hexutil.Encode(transaction.Data())
+	raw := bytes.Buffer{}
-	var raw bytes.Buffer
 	encodeErr := transaction.EncodeRLP(&raw)
 	if encodeErr != nil {
-		return core.Transaction{}, encodeErr
+		return core.TransactionModel{}, encodeErr
 	}
-	return core.Transaction{
+	return core.TransactionModel{
-		Data:     data,
+		Data:     transaction.Data(),
 		From:     strings.ToLower(addressToHex(from)),
 		GasLimit: transaction.Gas(),
 		GasPrice: transaction.GasPrice().Int64(),
@@ -104,9 +151,70 @@ func transToCoreTrans(transaction *types.Transaction, from *common.Address, tran
 	}, nil
 }
 
+func getTransactionData(transaction core.RpcTransaction) (transactionData, error) {
+	nonce, nonceErr := hexToBigInt(transaction.Nonce)
+	if nonceErr != nil {
+		return transactionData{}, nonceErr
+	}
+	gasPrice, gasPriceErr := hexToBigInt(transaction.GasPrice)
+	if gasPriceErr != nil {
+		return transactionData{}, gasPriceErr
+	}
+	gasLimit, gasLimitErr := hexToBigInt(transaction.GasLimit)
+	if gasLimitErr != nil {
+		return transactionData{}, gasLimitErr
+	}
+	recipient := common.HexToAddress(transaction.Recipient)
+	amount, amountErr := hexToBigInt(transaction.Amount)
+	if amountErr != nil {
+		return transactionData{}, amountErr
+	}
+	v, vErr := hexToBigInt(transaction.V)
+	if vErr != nil {
+		return transactionData{}, vErr
+	}
+	r, rErr := hexToBigInt(transaction.R)
+	if rErr != nil {
+		return transactionData{}, rErr
+	}
+	s, sErr := hexToBigInt(transaction.S)
+	if sErr != nil {
+		return transactionData{}, sErr
+	}
+	return transactionData{
+		AccountNonce: nonce.Uint64(),
+		Price:        gasPrice,
+		GasLimit:     gasLimit.Uint64(),
+		Recipient:    &recipient,
+		Amount:       amount,
+		Payload:      transaction.Payload,
+		V:            v,
+		R:            r,
+		S:            s,
+	}, nil
+}
+
+func getTransactionRLP(txData transactionData) ([]byte, error) {
+	transactionRlp := bytes.Buffer{}
+	encodeErr := rlp.Encode(&transactionRlp, txData)
+	if encodeErr != nil {
+		return nil, encodeErr
+	}
+	return transactionRlp.Bytes(), nil
+}
+
 func addressToHex(to *common.Address) string {
 	if to == nil {
 		return ""
 	}
 	return to.Hex()
 }
+
+func hexToBigInt(hex string) (*big.Int, error) {
+	result := big.NewInt(0)
+	_, scanErr := fmt.Sscan(hex, result)
+	if scanErr != nil {
+		return nil, scanErr
+	}
+	return result, nil
+}

pkg/geth/converters/rpc/transaction_converter_test.go

@@ -0,0 +1,82 @@
+package rpc_test
+
+import (
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+	"github.com/vulcanize/vulcanizedb/pkg/core"
+	"github.com/vulcanize/vulcanizedb/pkg/fakes"
+	"github.com/vulcanize/vulcanizedb/pkg/geth/converters/rpc"
+)
+
+var _ = Describe("RPC transaction converter", func() {
+	It("converts hex fields to integers", func() {
+		converter := rpc.RpcTransactionConverter{}
+		rpcTransaction := getFakeRpcTransaction("0x1")
+
+		transactionModels, err := converter.ConvertRpcTransactionsToModels([]core.RpcTransaction{rpcTransaction})
+
+		Expect(err).NotTo(HaveOccurred())
+		Expect(len(transactionModels)).To(Equal(1))
+		Expect(transactionModels[0].GasLimit).To(Equal(uint64(1)))
+		Expect(transactionModels[0].GasPrice).To(Equal(int64(1)))
+		Expect(transactionModels[0].Nonce).To(Equal(uint64(1)))
+		Expect(transactionModels[0].TxIndex).To(Equal(int64(1)))
+		Expect(transactionModels[0].Value).To(Equal("1"))
+	})
+
+	It("returns error if invalid hex cannot be converted", func() {
+		converter := rpc.RpcTransactionConverter{}
+		invalidTransaction := getFakeRpcTransaction("invalid")
+
+		_, err := converter.ConvertRpcTransactionsToModels([]core.RpcTransaction{invalidTransaction})
+
+		Expect(err).To(HaveOccurred())
+	})
+
+	It("copies RPC transaction hash, from, and to values to model", func() {
+		converter := rpc.RpcTransactionConverter{}
+		rpcTransaction := getFakeRpcTransaction("0x1")
+
+		transactionModels, err := converter.ConvertRpcTransactionsToModels([]core.RpcTransaction{rpcTransaction})
+
+		Expect(err).NotTo(HaveOccurred())
+		Expect(len(transactionModels)).To(Equal(1))
+		Expect(transactionModels[0].Hash).To(Equal(rpcTransaction.Hash))
+		Expect(transactionModels[0].From).To(Equal(rpcTransaction.From))
+		Expect(transactionModels[0].To).To(Equal(rpcTransaction.Recipient))
+	})
+
+	XIt("derives transaction RLP", func() {
+		// actual transaction: https://kovan.etherscan.io/tx/0x73aefdf70fc5650e0dd82affbb59d107f12dfabc50a78625b434ea68b7a69ee6
+		// actual RLP hex: 0x2926af093b6b72e3f10089bde6da0f99b0d4e13354f6f37c8334efc9d7e99a47
+
+	})
+
+	It("does not include transaction receipt", func() {
+		converter := rpc.RpcTransactionConverter{}
+		rpcTransaction := getFakeRpcTransaction("0x1")
+
+		transactionModels, err := converter.ConvertRpcTransactionsToModels([]core.RpcTransaction{rpcTransaction})
+
+		Expect(err).NotTo(HaveOccurred())
+		Expect(len(transactionModels)).To(Equal(1))
+		Expect(transactionModels[0].Receipt).To(Equal(core.Receipt{}))
+	})
+})
+
+func getFakeRpcTransaction(hex string) core.RpcTransaction {
+	return core.RpcTransaction{
+		Hash:             "0x2",
+		Amount:           hex,
+		GasLimit:         hex,
+		GasPrice:         hex,
+		Nonce:            hex,
+		From:             fakes.FakeAddress.Hex(),
+		Recipient:        fakes.FakeAddress.Hex(),
+		V:                "0x2",
+		R:                "0x2",
+		S:                "0x2",
+		Payload:          nil,
+		TransactionIndex: hex,
+	}
+}