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batch.go
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batch.go
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package core
import (
"encoding/hex"
"fmt"
"runtime/debug"
"sort"
"strings"
"time"
"github.com/anoideaopen/foundation/core/cachestub"
"github.com/anoideaopen/foundation/core/multiswap"
"github.com/anoideaopen/foundation/core/swap"
"github.com/anoideaopen/foundation/core/telemetry"
"github.com/anoideaopen/foundation/core/types"
"github.com/anoideaopen/foundation/internal/config"
"github.com/anoideaopen/foundation/proto"
pb "github.com/golang/protobuf/proto" //nolint:staticcheck
"github.com/hyperledger/fabric-chaincode-go/shim"
"github.com/hyperledger/fabric-protos-go/peer"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/codes"
"go.opentelemetry.io/otel/propagation"
)
const robotSideTimeout = 300 // 5 minutes
func (cc *ChainCode) saveToBatch(
traceCtx telemetry.TraceContext,
stub shim.ChaincodeStubInterface,
funcName string,
fn *Fn,
sender *proto.Address,
args []string,
nonce uint64,
) error {
logger := Logger()
txID := stub.GetTxID()
_, err := doConvertToCall(stub, fn, args)
if err != nil {
return fmt.Errorf("validate arguments. %w", err)
}
key, err := stub.CreateCompositeKey(config.BatchPrefix, []string{txID})
if err != nil {
logger.Errorf("Couldn't create composite key for tx %s: %s", txID, err.Error())
return err
}
txTimestamp, err := stub.GetTxTimestamp()
if err != nil {
logger.Errorf("Couldn't get timestamp for tx %s: %s", txID, err.Error())
return err
}
pending := &proto.PendingTx{
Method: funcName,
Sender: sender,
Args: args,
Timestamp: txTimestamp.GetSeconds(),
Nonce: nonce,
}
carrier := cc.contract.TracingHandler().RemoteCarrier(traceCtx)
// Sorting carrier keys in alphabetical order
// and packing carrier data into key-value pairs of preimage transaction
keys := carrier.Keys()
if len(keys) != 0 {
sort.Strings(keys)
var pairs []*proto.Pair
for _, k := range keys {
pairs = append(pairs, &proto.Pair{
Key: k,
Value: carrier.Get(k),
})
}
pending.Pairs = pairs
}
data, err := pb.Marshal(pending)
if err != nil {
logger.Errorf("Couldn't marshal transaction %s: %s", txID, err.Error())
return err
}
return stub.PutState(key, data)
}
func (cc *ChainCode) loadFromBatch(
stub shim.ChaincodeStubInterface,
txID string,
) (*proto.PendingTx, string, error) {
logger := Logger()
key, err := stub.CreateCompositeKey(config.BatchPrefix, []string{txID})
if err != nil {
logger.Errorf("Couldn't create composite key for tx %s: %s", txID, err.Error())
return nil, "", err
}
data, err := stub.GetState(key)
if err != nil {
logger.Errorf("Couldn't load transaction %s from state: %s", txID, err.Error())
return nil, "", err
}
if len(data) == 0 {
logger.Warningf("Transaction %s not found", txID)
return nil, "", fmt.Errorf("transaction %s not found", txID)
}
defer func() {
err = stub.DelState(key)
if err != nil {
logger.Errorf("Couldn't delete from state tx %s: %s", txID, err.Error())
}
}()
pending := new(proto.PendingTx)
if err = pb.Unmarshal(data, pending); err != nil {
logger.Errorf("couldn't unmarshal transaction %s: %s", txID, err.Error())
return nil, key, err
}
method, err := cc.methods.Method(pending.GetMethod())
if err != nil {
logger.Errorf("unknown method %s in tx %s", pending.GetMethod(), txID)
return pending, key, fmt.Errorf("unknown method %s in tx %s", pending.GetMethod(), txID)
}
if !method.needsAuth {
return pending, key, nil
}
if pending.GetSender() == nil {
logger.Errorf("no sender in tx %s", txID)
return pending, key, fmt.Errorf("no sender in tx %s", txID)
}
sender := types.NewSenderFromAddr((*types.Address)(pending.GetSender()))
if err = checkNonce(stub, sender, pending.GetNonce()); err != nil {
logger.Errorf("incorrect tx %s nonce: %s", txID, err.Error())
return pending, key, err
}
return pending, key, nil
}
//nolint:funlen
func (cc *ChainCode) batchExecute(
traceCtx telemetry.TraceContext,
stub shim.ChaincodeStubInterface,
dataIn string,
cfgBytes []byte,
) peer.Response {
traceCtx, span := cc.contract.TracingHandler().StartNewSpan(traceCtx, BatchExecute)
defer span.End()
logger := Logger()
batchID := stub.GetTxID()
span.SetAttributes(attribute.String("batch_tx_id", batchID))
btchStub := cachestub.NewBatchCacheStub(stub)
start := time.Now()
defer func() {
logger.Infof("batch %s elapsed time %d ms", batchID, time.Since(start).Milliseconds())
}()
response := proto.BatchResponse{}
events := proto.BatchEvent{}
var batch proto.Batch
if err := pb.Unmarshal([]byte(dataIn), &batch); err != nil {
logger.Errorf("Couldn't unmarshal batch %s: %s", batchID, err.Error())
return shim.Error(err.Error())
}
span.AddEvent("handle transactions in batch")
ids := make([]string, 0, len(batch.GetTxIDs()))
for _, txID := range batch.GetTxIDs() {
ids = append(ids, hex.EncodeToString(txID))
resp, event := cc.batchedTxExecute(traceCtx, btchStub, txID, cfgBytes)
response.TxResponses = append(response.TxResponses, resp)
events.Events = append(events.Events, event)
}
span.SetAttributes(attribute.StringSlice("ids", ids))
if !cc.contract.ContractConfig().GetOptions().GetDisableSwaps() {
span.AddEvent("handle swaps")
for _, s := range batch.GetSwaps() {
response.SwapResponses = append(response.SwapResponses, swap.Answer(btchStub, s, robotSideTimeout))
}
for _, swapKey := range batch.GetKeys() {
response.SwapKeyResponses = append(response.SwapKeyResponses, swap.RobotDone(btchStub, swapKey.GetId(), swapKey.GetKey()))
}
}
if !cc.contract.ContractConfig().GetOptions().GetDisableMultiSwaps() {
span.AddEvent("handle multi-swaps")
for _, s := range batch.GetMultiSwaps() {
response.SwapResponses = append(response.SwapResponses, multiswap.Answer(btchStub, s, robotSideTimeout))
}
for _, swapKey := range batch.GetMultiSwapsKeys() {
response.SwapKeyResponses = append(response.SwapKeyResponses, multiswap.RobotDone(btchStub, swapKey.GetId(), swapKey.GetKey()))
}
}
span.AddEvent("commit")
if err := btchStub.Commit(); err != nil {
logger.Errorf("Couldn't commit batch %s: %s", batchID, err.Error())
return shim.Error(err.Error())
}
response.CreatedSwaps = btchStub.Swaps
response.CreatedMultiSwap = btchStub.MultiSwaps
data, err := pb.Marshal(&response)
if err != nil {
logger.Errorf("Couldn't marshal batch response %s: %s", batchID, err.Error())
span.SetStatus(codes.Error, "marshalling batch response failed")
return shim.Error(err.Error())
}
eventData, err := pb.Marshal(&events)
if err != nil {
logger.Errorf("Couldn't marshal batch event %s: %s", batchID, err.Error())
span.SetStatus(codes.Error, "marshalling batch event failed")
return shim.Error(err.Error())
}
if err = stub.SetEvent(BatchExecute, eventData); err != nil {
logger.Errorf("Couldn't set batch event %s: %s", batchID, err.Error())
span.SetStatus(codes.Error, "set batch event failed")
return shim.Error(err.Error())
}
span.SetStatus(codes.Ok, "")
return shim.Success(data)
}
type TxResponse struct {
Method string `json:"method"`
Error string `json:"error,omitempty"`
Result string `json:"result"`
Events map[string][]byte `json:"events,omitempty"`
Accounting []*proto.AccountingRecord `json:"accounting"`
}
func (cc *ChainCode) batchedTxExecute(
traceCtx telemetry.TraceContext,
stub *cachestub.BatchCacheStub,
binaryTxID []byte,
cfgBytes []byte,
) (r *proto.TxResponse, e *proto.BatchTxEvent) {
traceCtx, span := cc.contract.TracingHandler().StartNewSpan(traceCtx, "batchTxExecute")
defer span.End()
logger := Logger()
start := time.Now()
methodName := "unknown"
span.SetAttributes(attribute.String("method", methodName))
txID := hex.EncodeToString(binaryTxID)
span.SetAttributes(attribute.String("preimage_tx_id", txID))
defer func() {
logger.Infof("batched method %s txid %s elapsed time %d ms", methodName, txID, time.Since(start).Milliseconds())
}()
r = &proto.TxResponse{Id: binaryTxID, Error: &proto.ResponseError{Error: "panic batchedTxExecute"}}
e = &proto.BatchTxEvent{Id: binaryTxID, Error: &proto.ResponseError{Error: "panic batchedTxExecute"}}
defer func() {
if rc := recover(); rc != nil {
logger.Criticalf("Tx %s panicked:\n%s", txID, string(debug.Stack()))
}
}()
span.AddEvent("load from batch")
pending, key, err := cc.loadFromBatch(stub, txID)
if err != nil && pending != nil {
if delErr := stub.ChaincodeStubInterface.DelState(key); delErr != nil {
logger.Errorf("failed deleting key %s from state on txId: %s", key, delErr.Error())
}
ee := proto.ResponseError{Error: "function and args loading error: " + err.Error()}
span.SetStatus(codes.Error, err.Error())
return &proto.TxResponse{
Id: binaryTxID,
Method: pending.GetMethod(),
Error: &ee,
}, &proto.BatchTxEvent{
Id: binaryTxID,
Method: pending.GetMethod(),
Error: &ee,
}
} else if err != nil {
if delErr := stub.ChaincodeStubInterface.DelState(key); delErr != nil {
logger.Errorf("failed deleting key %s from state: %s", key, delErr.Error())
}
ee := proto.ResponseError{Error: "function and args loading error: " + err.Error()}
span.SetStatus(codes.Error, err.Error())
return &proto.TxResponse{
Id: binaryTxID,
Error: &ee,
}, &proto.BatchTxEvent{
Id: binaryTxID,
Error: &ee,
}
}
txStub := stub.NewTxCacheStub(txID)
method, err := cc.methods.Method(pending.GetMethod())
if err != nil {
msg := fmt.Sprintf("parsing method '%s' in tx '%s': %s", pending.GetMethod(), txID, err.Error())
span.SetStatus(codes.Error, msg)
logger.Info(msg)
_ = stub.ChaincodeStubInterface.DelState(key)
ee := proto.ResponseError{Error: "unknown method " + pending.GetMethod()}
return &proto.TxResponse{
Id: binaryTxID,
Method: pending.GetMethod(),
Error: &ee,
}, &proto.BatchTxEvent{
Id: binaryTxID,
Method: pending.GetMethod(),
Error: &ee,
}
}
methodName = pending.GetMethod()
span.SetAttributes(attribute.String("method", methodName))
if len(pending.GetPairs()) != 0 {
carrier := propagation.MapCarrier{}
for _, pair := range pending.GetPairs() {
carrier.Set(pair.GetKey(), pair.GetValue())
}
traceCtx = cc.contract.TracingHandler().ExtractContext(carrier)
}
span.AddEvent("calling method")
response, err := cc.callMethod(traceCtx, txStub, method, pending.GetSender(), pending.GetArgs(), cfgBytes)
if err != nil {
_ = stub.ChaincodeStubInterface.DelState(key)
ee := proto.ResponseError{Error: err.Error()}
span.SetStatus(codes.Error, "call method returned error")
return &proto.TxResponse{
Id: binaryTxID,
Method: pending.GetMethod(),
Error: &ee,
}, &proto.BatchTxEvent{
Id: binaryTxID,
Method: pending.GetMethod(),
Error: &ee,
}
}
span.AddEvent("commit")
writes, events := txStub.Commit()
sort.Slice(txStub.Accounting, func(i, j int) bool {
return strings.Compare(txStub.Accounting[i].String(), txStub.Accounting[j].String()) < 0
})
span.SetStatus(codes.Ok, "")
return &proto.TxResponse{
Id: binaryTxID,
Method: pending.GetMethod(),
Writes: writes,
},
&proto.BatchTxEvent{
Id: binaryTxID,
Method: pending.GetMethod(),
Accounting: txStub.Accounting,
Events: events,
Result: response,
}
}