Helper methods for Synchronizer and TX refactor

common/batch.go

@@ -8,7 +8,7 @@ import (
 	ethCommon "github.com/ethereum/go-ethereum/common"
 )
 
-const batchNumBytesLen = 4
+const batchNumBytesLen = 8
 
 // Batch is a struct that represents Hermez network batch
 type Batch struct {
@@ -24,20 +24,20 @@ type Batch struct {
 }
 
 // BatchNum identifies a batch
-type BatchNum uint32
+type BatchNum int64
 
 // Bytes returns a byte array of length 4 representing the BatchNum
 func (bn BatchNum) Bytes() []byte {
-	var batchNumBytes [4]byte
-	binary.LittleEndian.PutUint32(batchNumBytes[:], uint32(bn))
+	var batchNumBytes [batchNumBytesLen]byte
+	binary.BigEndian.PutUint64(batchNumBytes[:], uint64(bn))
 	return batchNumBytes[:]
 }
 
 // BatchNumFromBytes returns BatchNum from a []byte
 func BatchNumFromBytes(b []byte) (BatchNum, error) {
 	if len(b) != batchNumBytesLen {
-		return 0, fmt.Errorf("can not parse BatchNumFromBytes, bytes len %d, expected 4", len(b))
+		return 0, fmt.Errorf("can not parse BatchNumFromBytes, bytes len %d, expected %d", len(b), batchNumBytesLen)
 	}
-	batchNum := binary.LittleEndian.Uint32(b[:4])
+	batchNum := binary.BigEndian.Uint64(b[:batchNumBytesLen])
 	return BatchNum(batchNum), nil
 }

common/coordinator.go

@@ -7,8 +7,8 @@ import (
 // Coordinator represents a Hermez network coordinator who wins an auction for an specific slot
 // WARNING: this is strongly based on the previous implementation, once the new spec is done, this may change a lot.
 type Coordinator struct {
-	EthBlockNum int64             // block in which the coordinator was registered
-	Forger      ethCommon.Address // address of the forger
-	Withdraw    ethCommon.Address // address of the withdraw
-	URL         string            // URL of the coordinators API
+	Forger       ethCommon.Address `meddler:"forger_addr"`   // address of the forger
+	EthBlockNum  int64             `meddler:"eth_block_num"` // block in which the coordinator was registered
+	WithdrawAddr ethCommon.Address `meddler:"withdraw_addr"` // address of the withdraw
+	URL          string            `meddler:"url"`           // URL of the coordinators API
 }

common/exittree.go

@@ -8,8 +8,19 @@ import (
 
 // ExitInfo represents the ExitTree Leaf data
 type ExitInfo struct {
-	AccountIdx  Idx
-	MerkleProof *merkletree.CircomVerifierProof
-	Balance     *big.Int
-	Nullifier   *big.Int
+	BatchNum    BatchNum                        `meddler:"batch_num"`
+	AccountIdx  Idx                             `meddler:"account_idx"`
+	MerkleProof *merkletree.CircomVerifierProof `meddler:"merkle_proof,json"`
+	Balance     *big.Int                        `meddler:"balance,bigint"`
+	// InstantWithdrawn is the ethBlockNum in which the exit is withdrawn
+	// instantly.  nil means this hasn't happened.
+	InstantWithdrawn *int64 `meddler:"instant_withdrawn"`
+	// DelayedWithdrawRequest is the ethBlockNum in which the exit is
+	// requested to be withdrawn from the delayedWithdrawn smart contract.
+	// nil means this hasn't happened.
+	DelayedWithdrawRequest *int64 `meddler:"delayed_withdraw_request"`
+	// DelayedWithdrawn is the ethBlockNum in which the exit is withdrawn
+	// from the delayedWithdrawn smart contract.  nil means this hasn't
+	// happened.
+	DelayedWithdrawn *int64 `meddler:"delayed_withdrawn"`
 }

common/tx.go

@@ -66,3 +66,24 @@ type Tx struct {
 	FeeUSD float64     `meddler:"fee_usd,zeroisnull"`
 	Nonce  Nonce       `meddler:"nonce,zeroisnull"`
 }
+
+// L1Tx returns a *L1Tx from the Tx
+func (tx *Tx) L1Tx() *L1Tx {
+	l1Tx := &L1Tx{
+		TxID:            tx.TxID,
+		ToForgeL1TxsNum: tx.ToForgeL1TxsNum,
+		Position:        tx.Position,
+		UserOrigin:      tx.UserOrigin,
+		FromIdx:         tx.FromIdx,
+		FromEthAddr:     tx.FromEthAddr,
+		FromBJJ:         tx.FromBJJ,
+		ToIdx:           tx.ToIdx,
+		TokenID:         tx.TokenID,
+		Amount:          tx.Amount,
+		LoadAmount:      tx.LoadAmount,
+		EthBlockNum:     tx.EthBlockNum,
+		Type:            tx.Type,
+		BatchNum:        tx.BatchNum,
+	}
+	return l1Tx
+}