[WIP] Add tx list request and response

client.go

@@ -60,6 +60,39 @@ func (c Client) GetAccountState(accountAddr string) (AccountState, error) {
 	return FromAccountStateBlob(accStateBlob)
 }
 
+// GetTransactionList
+func (c Client) GetTransactionList(limit int) (TransactionList, error) {
+	// Types that are valid to be assigned to RequestedItems:
+	//	*RequestItem_GetAccountStateRequest
+	//	*RequestItem_GetAccountTransactionBySequenceNumberRequest
+	//	*RequestItem_GetEventsByEventAccessPathRequest
+	//	*RequestItem_GetTransactionsRequest
+	requestedItems := []*types.RequestItem{
+		&types.RequestItem{
+			RequestedItems: &types.RequestItem_GetTransactionsRequest{
+				GetTransactionsRequest: &types.GetTransactionsRequest{
+					StartVersion: 1,
+					Limit:        uint64(limit),
+					FetchEvents:  true,
+				},
+			},
+		},
+	}
+	knownVersion := uint64(0) // TODO: Does this make a difference for accounts? Or only for events? Might need to be a method parameter.
+	updateLedgerRequest := types.UpdateToLatestLedgerRequest{
+		ClientKnownVersion: knownVersion,
+		RequestedItems:     requestedItems,
+	}
+	updateLedgerResponse, err := c.acc.UpdateToLatestLedger(context.Background(), &updateLedgerRequest)
+	if err != nil {
+		return TransactionList{}, err
+	}
+
+	txList := updateLedgerResponse.GetResponseItems()[0].GetGetTransactionsResponse().GetTxnListWithProof().GetTransactions()
+
+	return FromTransactionList(txList)
+}
+
 // SendTx sends a transaction to the connected validator node.
 func (c Client) SendTx(tx Transaction) error {
 	txRequest := admission_control.SubmitTransactionRequest{

examples/main.go

@@ -14,7 +14,7 @@ func main() {
 	}
 	defer c.Close()
 
-	acc := "8cd377191fe0ef113455c8e8d769f0c0147d5bb618bf195c0af31a05fbfd0969"
+	acc := "82258967750773ea090d125f9aeb9b9e42f6c7ff6df0742336992bfc52b4096a"
 	accState, err := c.GetAccountState(acc)
 	if err != nil {
 		panic(err)
@@ -23,4 +23,11 @@ func main() {
 	fmt.Printf("Raw account state: 0x%x\n", accState.Blob)
 	fmt.Println()
 	fmt.Printf("Account resource: %v\n", accState.AccountResource)
+
+	txlist, err := c.GetTransactionList(1)
+	if err != nil {
+		panic(err)
+	}
+	fmt.Println()
+	fmt.Printf("Transaction list resource: %v\n", txlist.Transactions)
 }

tx.go

@@ -1,8 +1,68 @@
 package libra
 
+import (
+	"bytes"
+	"encoding/binary"
+	"fmt"
+
+	"github.com/philippgille/libra-sdk-go/rpc/types"
+)
+
 // Transaction is a transaction of Libra Coins.
 type Transaction struct {
 	RawBytes     []byte
 	SenderPubKey []byte
 	SenderSig    []byte
 }
+
+// TransactionList
+type TransactionList struct {
+	Transactions []Transaction
+}
+
+// FromTransactionListResourceBlob
+func FromTransactionListResourceBlob(transactionListResourceBlob []byte) (TransactionListResource, error) {
+	result := TransactionListResource{}
+
+	r := bytes.NewReader(transactionListResourceBlob)
+
+	var balance uint64
+	err := binary.Read(r, binary.LittleEndian, &balance)
+	if err != nil {
+		return result, err
+	}
+	result.Balance = balance
+
+	return result, nil
+}
+
+// TransactionListResource
+type TransactionListResource struct {
+	AuthKey        []byte
+	Balance        uint64
+	ReceivedEvents uint64
+	SentEvents     uint64
+	SequenceNo     uint64
+}
+
+// String formats the account state similarly to the Libra CLI.
+// Numbers are formatted as string because the numbers are uint64,
+// whose max value exceeds JSON's "save integer",
+// which can lead to parsing errors.
+func (tx Transaction) String() string {
+	return fmt.Sprintf("{\"raw_bytes\": \"0x%x\", \"sender_pub_key\": \"0x%x\", \"sender_sig\": \"0x%x\"}",
+		tx.RawBytes, tx.SenderPubKey, tx.SenderSig)
+}
+
+// FromAccountStateBlob converts an account state blob into an object of the AccountState struct.
+func FromTransactionList(transactionList []*types.SignedTransaction) (TransactionList, error) {
+	results := TransactionList{}
+	for _, x := range transactionList {
+		result := Transaction{}
+		result.RawBytes = x.GetRawTxnBytes()
+		result.SenderPubKey = x.GetSenderPublicKey()
+		result.SenderSig = x.GetSenderSignature()
+		results.Transactions = append(results.Transactions, result)
+	}
+	return results, nil
+}