save

eth/tracers/live/noop.go

@@ -59,13 +59,15 @@ func (t *noop) OnExit(depth int, output []byte, gasUsed uint64, err error, rever
 func (t *noop) OnTxStart(vm *tracing.VMContext, tx *types.Transaction, from common.Address) {
 }
 
-func (t *noop) OnTxEnd(receipt *types.Receipt, err error) {
-}
+func (t *noop) OnTxEnd(receipt *types.Receipt, err error) {}
 
 func (t *noop) OnBlockStart(ev tracing.BlockEvent) {
+	// Compute the increase and decrease in bridged asset here
+	// These values are staged over here
 }
 
 func (t *noop) OnBlockEnd(err error) {
+	// if err == nil, then we need to commit the values we have staged.
 }
 
 func (t *noop) OnSkippedBlock(ev tracing.BlockEvent) {}

eth/tracers/live/tia_tracer.go

@@ -0,0 +1,126 @@
+package live
+
+import (
+	"encoding/json"
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/tracing"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/eth/tracers"
+	"github.com/ethereum/go-ethereum/params"
+)
+
+func init() {
+	tracers.LiveDirectory.Register("tiatracer", newTiaTracer)
+}
+
+// noop is a no-op live tracer. It's there to
+// catch changes in the tracing interface, as well as
+// for testing live tracing performance. Can be removed
+// as soon as we have a real live tracer.
+type TiaTracer struct {
+	TotalDeposited       *big.Int
+	TotalWithdrawn       *big.Int
+	TotalDepositedStaged *big.Int
+	TotalWithdrawnStaged *big.Int
+}
+
+func newTiaTracer(_ json.RawMessage) (*tracing.Hooks, error) {
+	t := &TiaTracer{
+		TotalDeposited:       big.NewInt(0),
+		TotalWithdrawn:       big.NewInt(0),
+		TotalDepositedStaged: big.NewInt(0),
+		TotalWithdrawnStaged: big.NewInt(0),
+	}
+
+	return &tracing.Hooks{
+		OnTxStart:        t.OnTxStart,
+		OnTxEnd:          t.OnTxEnd,
+		OnEnter:          t.OnEnter,
+		OnExit:           t.OnExit,
+		OnOpcode:         t.OnOpcode,
+		OnFault:          t.OnFault,
+		OnGasChange:      t.OnGasChange,
+		OnBlockchainInit: t.OnBlockchainInit,
+		OnBlockStart:     t.OnBlockStart,
+		OnBlockEnd:       t.OnBlockEnd,
+		OnSkippedBlock:   t.OnSkippedBlock,
+		OnGenesisBlock:   t.OnGenesisBlock,
+		OnBalanceChange:  t.OnBalanceChange,
+		OnNonceChange:    t.OnNonceChange,
+		OnCodeChange:     t.OnCodeChange,
+		OnStorageChange:  t.OnStorageChange,
+		OnLog:            t.OnLog,
+	}, nil
+}
+
+func (t *TiaTracer) OnOpcode(pc uint64, op byte, gas, cost uint64, scope tracing.OpContext, rData []byte, depth int, err error) {
+}
+
+func (t *TiaTracer) OnFault(pc uint64, op byte, gas, cost uint64, _ tracing.OpContext, depth int, err error) {
+}
+
+func (t *TiaTracer) OnEnter(depth int, typ byte, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) {
+}
+
+func (t *TiaTracer) OnExit(depth int, output []byte, gasUsed uint64, err error, reverted bool) {
+}
+
+func (t *TiaTracer) OnTxStart(vm *tracing.VMContext, tx *types.Transaction, from common.Address) {
+}
+
+func (t *TiaTracer) OnTxEnd(receipt *types.Receipt, err error) {}
+
+func (t *TiaTracer) OnBlockStart(ev tracing.BlockEvent) {
+	// Compute the increase and decrease in bridged asset here
+	// These values are staged over here
+
+	for _, tx := range ev.Block.Transactions() {
+		// TODO - include erc20 deposit and withdrawals too here
+		if tx.Type() == types.DepositTxType {
+			t.TotalDepositedStaged = t.TotalDepositedStaged.Add(t.TotalDepositedStaged, tx.Value())
+		}
+	}
+}
+
+func (t *TiaTracer) OnBlockEnd(err error) {
+	// if err == nil, then we need to commit the values we have staged.
+	if err == nil {
+		t.TotalDeposited = t.TotalDeposited.Add(t.TotalDeposited, t.TotalDepositedStaged)
+		t.TotalWithdrawn = t.TotalWithdrawn.Add(t.TotalWithdrawn, t.TotalWithdrawnStaged)
+
+		// TODO - we should sent this to prometheus? or can we?
+		// if multiple
+	}
+
+	t.TotalDepositedStaged = big.NewInt(0)
+	t.TotalWithdrawnStaged = big.NewInt(0)
+}
+
+func (t *TiaTracer) OnSkippedBlock(ev tracing.BlockEvent) {}
+
+func (t *TiaTracer) OnBlockchainInit(chainConfig *params.ChainConfig) {
+}
+
+func (t *TiaTracer) OnGenesisBlock(b *types.Block, alloc types.GenesisAlloc) {
+}
+
+func (t *TiaTracer) OnBalanceChange(a common.Address, prev, new *big.Int, reason tracing.BalanceChangeReason) {
+}
+
+func (t *TiaTracer) OnNonceChange(a common.Address, prev, new uint64) {
+}
+
+func (t *TiaTracer) OnCodeChange(a common.Address, prevCodeHash common.Hash, prev []byte, codeHash common.Hash, code []byte) {
+}
+
+func (t *TiaTracer) OnStorageChange(a common.Address, k, prev, new common.Hash) {
+}
+
+func (t *TiaTracer) OnLog(l *types.Log) {
+
+}
+
+func (t *TiaTracer) OnGasChange(old, new uint64, reason tracing.GasChangeReason) {
+}