Add config endpoint

api/api.go

@@ -10,6 +10,7 @@ import (
 )
 
 var h *historydb.HistoryDB
+var cg *configAPI
 
 // var s *statedb.StateDB // Not 100% sure if this is needed
 // var l2 *l2db.L2DB
@@ -21,6 +22,7 @@ func SetAPIEndpoints(
 	hdb *historydb.HistoryDB,
 	sdb *statedb.StateDB,
 	l2db *l2db.L2DB,
+	config *configAPI,
 ) error {
 	// Check input
 	// TODO: is stateDB only needed for explorer endpoints or for both?
@@ -32,6 +34,7 @@ func SetAPIEndpoints(
 	}
 
 	h = hdb
+	cg = config
 	// s = sdb
 	// l2 = l2db
 

api/api_test.go

@@ -24,6 +24,7 @@ import (
 	"github.com/hermeznetwork/hermez-node/db/historydb"
 	"github.com/hermeznetwork/hermez-node/db/l2db"
 	"github.com/hermeznetwork/hermez-node/db/statedb"
+	"github.com/hermeznetwork/hermez-node/eth"
 	"github.com/hermeznetwork/hermez-node/log"
 	"github.com/hermeznetwork/hermez-node/test"
 	"github.com/iden3/go-iden3-crypto/babyjub"
@@ -130,6 +131,7 @@ func (tx *wrappedL2) L2() *common.L2Tx {
 }
 
 var tc testCommon
+var config configAPI
 
 func TestMain(m *testing.M) {
 	// Init swagger
@@ -159,6 +161,48 @@ func TestMain(m *testing.M) {
 	l2DB := l2db.NewL2DB(database, 10, 100, 24*time.Hour)
 	test.CleanL2DB(l2DB.DB())
 
+	config.RollupConstants.ExchangeMultiplier = eth.RollupConstExchangeMultiplier
+	config.RollupConstants.ExitIdx = eth.RollupConstExitIDx
+	config.RollupConstants.ReservedIdx = eth.RollupConstReservedIDx
+	config.RollupConstants.LimitLoadAmount, _ = new(big.Int).SetString("340282366920938463463374607431768211456", 10)
+	config.RollupConstants.LimitL2TransferAmount, _ = new(big.Int).SetString("6277101735386680763835789423207666416102355444464034512896", 10)
+	config.RollupConstants.LimitTokens = eth.RollupConstLimitTokens
+	config.RollupConstants.L1CoordinatorTotalBytes = eth.RollupConstL1CoordinatorTotalBytes
+	config.RollupConstants.L1UserTotalBytes = eth.RollupConstL1UserTotalBytes
+	config.RollupConstants.MaxL1UserTx = eth.RollupConstMaxL1UserTx
+	config.RollupConstants.MaxL1Tx = eth.RollupConstMaxL1Tx
+	config.RollupConstants.InputSHAConstantBytes = eth.RollupConstInputSHAConstantBytes
+	config.RollupConstants.NumBuckets = eth.RollupConstNumBuckets
+	config.RollupConstants.MaxWithdrawalDelay = eth.RollupConstMaxWithdrawalDelay
+	var rollupPublicConstants eth.RollupPublicConstants
+	rollupPublicConstants.AbsoluteMaxL1L2BatchTimeout = 240
+	rollupPublicConstants.HermezAuctionContract = ethCommon.HexToAddress("0x500D1d6A4c7D8Ae28240b47c8FCde034D827fD5e")
+	rollupPublicConstants.HermezGovernanceDAOAddress = ethCommon.HexToAddress("0xeAD9C93b79Ae7C1591b1FB5323BD777E86e150d4")
+	rollupPublicConstants.SafetyAddress = ethCommon.HexToAddress("0xE5904695748fe4A84b40b3fc79De2277660BD1D3")
+	rollupPublicConstants.TokenHEZ = ethCommon.HexToAddress("0xf784709d2317D872237C4bC22f867d1BAe2913AB")
+	rollupPublicConstants.WithdrawDelayerContract = ethCommon.HexToAddress("0xD6C850aeBFDC46D7F4c207e445cC0d6B0919BDBe")
+	var verifier eth.RollupVerifierStruct
+	verifier.MaxTx = 512
+	verifier.NLevels = 32
+	rollupPublicConstants.Verifiers = append(rollupPublicConstants.Verifiers, verifier)
+
+	var auctionConstants eth.AuctionConstants
+	auctionConstants.BlocksPerSlot = 40
+	auctionConstants.GenesisBlockNum = 100
+	auctionConstants.GovernanceAddress = ethCommon.HexToAddress("0xeAD9C93b79Ae7C1591b1FB5323BD777E86e150d4")
+	auctionConstants.InitialMinimalBidding, _ = new(big.Int).SetString("10000000000000000000", 10)
+	auctionConstants.HermezRollup = ethCommon.HexToAddress("0xEa960515F8b4C237730F028cBAcF0a28E7F45dE0")
+	auctionConstants.TokenHEZ = ethCommon.HexToAddress("0xf784709d2317D872237C4bC22f867d1BAe2913AB")
+
+	var wdelayerConstants eth.WDelayerConstants
+	wdelayerConstants.HermezRollup = ethCommon.HexToAddress("0xEa960515F8b4C237730F028cBAcF0a28E7F45dE0")
+	wdelayerConstants.MaxEmergencyModeTime = uint64(1000000)
+	wdelayerConstants.MaxWithdrawalDelay = uint64(10000000)
+
+	config.RollupConstants.PublicConstants = rollupPublicConstants
+	config.AuctionConstants = auctionConstants
+	config.WDelayerConstants = wdelayerConstants
+
 	// Init API
 	api := gin.Default()
 	if err := SetAPIEndpoints(
@@ -168,6 +212,7 @@ func TestMain(m *testing.M) {
 		hdb,
 		sdb,
 		l2DB,
+		&config,
 	); err != nil {
 		panic(err)
 	}
@@ -991,6 +1036,14 @@ func assertTokensAPIs(t *testing.T, expected, actual []tokenAPI) {
 	}
 }
 
+func TestGetConfig(t *testing.T) {
+	endpoint := apiURL + "config"
+	var configTest configAPI
+	assert.NoError(t, doGoodReq("GET", endpoint, nil, &configTest))
+	assert.Equal(t, config, configTest)
+	assert.Equal(t, cg, &configTest)
+}
+
 func doGoodReqPaginated(
 	path, order string,
 	iterStruct db.Paginationer,

api/dbtoapistructs.go

@@ -2,6 +2,7 @@ package api
 
 import (
 	"encoding/base64"
+	"math/big"
 	"strconv"
 	"time"
 
@@ -9,6 +10,7 @@ import (
 	"github.com/hermeznetwork/hermez-node/common"
 	"github.com/hermeznetwork/hermez-node/db"
 	"github.com/hermeznetwork/hermez-node/db/historydb"
+	"github.com/hermeznetwork/hermez-node/eth"
 	"github.com/iden3/go-iden3-crypto/babyjub"
 	"github.com/iden3/go-merkletree"
 )
@@ -248,3 +250,29 @@ func tokensToAPI(dbTokens []historydb.TokenRead) []tokenAPI {
 	}
 	return apiTokens
 }
+
+// Config
+
+type rollupConstants struct {
+	PublicConstants         eth.RollupPublicConstants `json:"publicConstants"`
+	MaxFeeIdxCoordinator    int                       `json:"maxFeeIdxCoordinator"`
+	ReservedIdx             int                       `json:"reservedIdx"`
+	ExitIdx                 int                       `json:"exitIdx"`
+	LimitLoadAmount         *big.Int                  `json:"limitLoadAmount"`
+	LimitL2TransferAmount   *big.Int                  `json:"limitL2TransferAmount"`
+	LimitTokens             int                       `json:"limitTokens"`
+	L1CoordinatorTotalBytes int                       `json:"l1CoordinatorTotalBytes"`
+	L1UserTotalBytes        int                       `json:"l1UserTotalBytes"`
+	MaxL1UserTx             int                       `json:"maxL1UserTx"`
+	MaxL1Tx                 int                       `json:"maxL1Tx"`
+	InputSHAConstantBytes   int                       `json:"inputSHAConstantBytes"`
+	NumBuckets              int                       `json:"numBuckets"`
+	MaxWithdrawalDelay      int                       `json:"maxWithdrawalDelay"`
+	ExchangeMultiplier      int                       `json:"exchangeMultiplier"`
+}
+
+type configAPI struct {
+	RollupConstants   rollupConstants       `json:"hermez"`
+	AuctionConstants  eth.AuctionConstants  `json:"auction"`
+	WDelayerConstants eth.WDelayerConstants `json:"withdrawalDelayer"`
+}

api/handlers.go

@@ -198,7 +198,7 @@ func getState(c *gin.Context) {
 }
 
 func getConfig(c *gin.Context) {
-
+	c.JSON(http.StatusOK, cg)
 }
 
 func getTokens(c *gin.Context) {

api/swagger.yml

@@ -2330,104 +2330,175 @@ components:
           type: object
           description: Constant configuration of the Hermez smart contract.
           properties:
-            HEZTokenAddress:
-              allOf:
-                - $ref: '#/components/schemas/EthereumAddress'
-                - description: Ethereum address of the HEZ token.
-                - example: "0x444dc4262BCDbf85190C01c996b4C06a461d2430"
-            maxTxVerifiers:
+            publicConstants:
+              type: object
+              description: Public Hermez smart contract constants
+              properties: 
+                tokenHEZ:
+                  allOf:
+                    - $ref: '#/components/schemas/EthereumAddress'
+                    - description: Ethereum address of the HEZ token.
+                    - example: "0x444dc4262BCDbf85190C01c996b4C06a461d2430"
+                absoluteMaxL1L2BatchTimeout:
+                  type: integer
+                  description:  L1L2 Batch Timeout
+                  example: 240
+                verifiers:
+                  type: array
+                  description: List of verifiers struct
+                  items:
+                    type: object
+                    properties:
+                      maxTx:
+                        type: integer
+                        description: Maximum rollup transactions in a batch
+                        example: 512
+                      nlevels:
+                        type: integer
+                        description: Number of levels of the circuit
+                        example: 32
+                    required:
+                      - maxTx
+                      - nlevels
+                    additionalProperties: false
+                hermezAuctionContract:
+                  allOf:
+                    - $ref: '#/components/schemas/EthereumAddress'
+                    - description: Ethereum address of the auction smart contract.
+                    - example: "0x111dc4262BCDbf85190C01c996b4C06a461d2430"
+                hermezGovernanceDAOAddress:
+                  allOf:
+                    - $ref: '#/components/schemas/EthereumAddress'
+                    - description: Ethereum address of the governanceDAO.
+                    - example: "0x222dc4262BCDbf85190C01c996b4C06a461d2430"
+                safetyAddress:
+                  allOf:
+                    - $ref: '#/components/schemas/EthereumAddress'
+                    - description: Ethereum address of the safety.
+                    - example: "0x333dc4262BCDbf85190C01c996b4C06a461d2430"
+                withdrawDelayerContract:
+                  allOf:
+                    - $ref: '#/components/schemas/EthereumAddress'
+                    - description: Ethereum address of the withdraw delayer contracts.
+                    - example: "0x444dc4262BCDbf85190C01c996b4C06a461d2430"
+              required:
+                - tokenHEZ
+                - absoluteMaxL1L2BatchTimeout
+                - verifiers
+                - hermezAuctionContract
+                - hermezGovernanceDAOAddress
+                - safetyAddress
+                - withdrawDelayerContract
+              additionalProperties: false
+            maxFeeIdxCoordinator:
               type: integer
-              description: Maximum transactions of the verifiers.
-              example: 100
-            maxLoadAmount:
+              description: is the maximum number of tokens the coordinator can use to collect fees.
+              example: 64
+            reservedIdx:
+              type: integer
+              description: First 256 indexes reserved, first user index will be the 256.
+              example: 255
+            exitIdx:
+              type: integer
+              description: Account index used to indicate that a transaction is an `exit` or `force exit`.
+              example: 1
+            limitLoadAmount:
               type: integer
               description: Maximum load amount (L1 to L2) allowed.
               example: 321
-            maxAmount:
+            limitL2TransferAmount:
               type: integer
               description: Maximum amount (L2 to L2) allowed.
               example: 837
-            maxTokens:
+            limitTokens:
               type: integer
               description: Maximum number of different tokens that can be registered in the network.
               example: 4294967295
-            reservedAccountIndex:
-              type: integer
-              description: First user index. Bellow this number the indexes are reserved for the protocol.
-              example: 256
-            lastAccountIndex:
-              type: integer
-              description: Biggest account index that can be registered.
-              example: 4294967295
-            exitAccountIndex:
-              type: integer
-              description: Account index used to indicate that a transaction is an `exit` or `force exit`.
-              example: 1
-            L1CoordinatorBytes:
+            l1CoordinatorTotalBytes:
               type: integer
               description: Number of bytes that a L1 coordinator transaction has ([4 bytes] token + [32 bytes] babyjub + [65 bytes] compressedSignature).
-              example: 23
-            L1UserBytes:
-              type: integer
-              description: Number of bytes that a L2 transaction has ([4 bytes] fromIdx + [4 bytes] toIdx + [2 bytes] amountFloat16 + [1 bytes] fee).
-              example: 32
-            L2Bytes:
+              example: 101
+            l1UserTotalBytes:
               type: integer
-              description: Number of bytes that a L2 transaction has ([4 bytes] fromIdx + [4 bytes] toIdx + [2 bytes] amountFloat16 + [1 bytes] fee).
-              example: 33
-            maxL1Transactions:
+              description: Number of bytes that a L1 user transaction has ([20 bytes] fromEthAddr + [32 bytes] fromBjj-compressed + [6 bytes] fromIdx + [2 bytes] loadAmountFloat16 + [2 bytes] amountFloat16 + [4 bytes] tokenId + [6 bytes] toIdx).
+              example: 72
+            maxL1UserTx:
               type: integer
-              description: Maximum L1 transactions allowed to be queued in a batch.
+              description: Maximum L1-user transactions allowed to be queued in a batch.
               example: 128
-            maxL1UserTransactions:
+            maxL1Tx:
               type: integer
-              description: Maximum L1 transactions allowed to be queued in a batch by users (anyone who is not a coordinator).
-              example: 32
-            RField:
-              allOf:
-                - $ref: '#/components/schemas/BigInt'
-                - description: Modulus zkSNARK.
-        withdrawManager:
-          type: object
-          description: Constant configuration of the withdraw manager smart contract.
-          properties:
-            noLimit:
+              description: Maximum L1 transactions allowed to be queued in a batch.
+              example: 256
+            inputSHAConstantBytes:
               type: integer
-              description: Reserved bucket index when the token value is 0 USD.
-              example: 0
-            amountOfBuckets:
+              description: Input SHA constant bytes 
+              example: 18542
+            numBuckets:
               type: integer
               description: Number of buckets
+              example: 5
             maxWithdrawalDelay:
               type: integer
-              description: Maximum delay to withdraw tokens. Time is measured in Ethereum blocks.
+              description: Maximum delay to withdraw tokens. Time is measured in seconds.
+              example: 2 * 7 * 24 * 60 * 60
+            exchangeMultiplier:
+              type: integer
+              description: exchange multiplier
+              example: 1e14
+          required:
+            - publicConstants
+            - reservedIdx
+            - exitIdx
+            - limitLoadAmount
+            - limitL2TransferAmount
+            - limitTokens
+            - l1CoordinatorTotalBytes
+            - l1UserTotalBytes
+            - maxL1UserTx
+            - maxL1Tx
+            - inputSHAConstantBytes
+            - numBuckets
+            - maxWithdrawalDelay
+            - exchangeMultiplier
+          additionalProperties: false
         auction:
           type: object
           description: Constant configuration of the auction smart contract.
           properties:
-            HEZTokenAddress:
+            blocksPerSlot:
+              type: integer
+              description: Blocks per slot.
+            initialMinimalBidding:
+              type: integer
+              description: Minimum bid when no one has bid yet.
+            genesisBlockNum:
+              allOf:
+                - $ref: '#/components/schemas/EthBlockNum'
+                - description: Ethereum block number in which the smart contract starts operating.
+            tokenHEZ:
               allOf:
                 - $ref: '#/components/schemas/EthereumAddress'
                 - description: Ethereum address of the HEZ token.
                 - example: "0x333dc4262BCDbf85190C01c996b4C06a461d2430"
-            rollupAddress:
+            hermezRollup:
               allOf:
                 - $ref: '#/components/schemas/EthereumAddress'
                 - description: Ethereum address of the rollup smart contract.
                 - example: "0x222dc4262BCDbf85190C01c996b4C06a461d2430"
-            genesisBlockNum:
+            governanceAddress:
               allOf:
-                - $ref: '#/components/schemas/EthBlockNum'
-                - description: Ethereum block number in which the smart contract starts operating.
-            delayGenesis:
-              type: integer
-              description: Time delay between `genesisBlockNum` and the beginning of the first block. Time is measured in Ethereum blocks.
-            blocksPerSlot:
-              type: integer
-              description: Blocks per slot.
-            initialMinimalBidding:
-              type: integer
-              description: Minimum bid when no one has bid yet.
+                - $ref: '#/components/schemas/EthereumAddress'
+                - description: Ethereum address of the governance.
+                - example: "0x444dc4262BCDbf85190C01c996b4C06a461d2430"
+          required:
+            - blocksPerSlot
+            - initialMinimalBidding
+            - genesisBlockNum
+            - tokenHEZ
+            - hermezRollup
+            - governanceAddress
+          additionalProperties: false
         withdrawalDelayer:
           type: object
           description: Constant configuration of the withdrawal delayer smart contract.
@@ -2440,6 +2511,21 @@ components:
               type: integer
               description: Maximum amount of time in which the contract can be in emergency mode. Time is measured in Ethereum blocks.
               example: 2000
+            hermezRollup:
+              allOf:
+                - $ref: '#/components/schemas/EthereumAddress'
+                - description: Ethereum address of the rollup smart contract.
+                - example: "0x222dc4262BCDbf85190C01c996b4C06a461d2430"
+          required:
+            - maxWithdrawalDelay
+            - maxEmergencyModeTime
+            - hermezRollup
+          additionalProperties: false
+      required:
+        - hermez
+        - auction
+        - withdrawalDelayer
+      additionalProperties: false
     Error:
       type: object
       description: Error response. 

eth/auction.go

@@ -22,18 +22,18 @@ import (
 // AuctionConstants are the constants of the Rollup Smart Contract
 type AuctionConstants struct {
 	// Blocks per slot
-	BlocksPerSlot uint8
+	BlocksPerSlot uint8 `json:"blocksPerSlot"`
 	// Minimum bid when no one has bid yet
-	InitialMinimalBidding *big.Int
+	InitialMinimalBidding *big.Int `json:"initialMinimalBidding"`
 	// First block where the first slot begins
-	GenesisBlockNum int64
+	GenesisBlockNum int64 `json:"genesisBlockNum"`
 	// ERC777 token with which the bids will be made
-	TokenHEZ ethCommon.Address
+	TokenHEZ ethCommon.Address `json:"tokenHEZ"`
 	// HermezRollup smartcontract address
-	HermezRollup ethCommon.Address
+	HermezRollup ethCommon.Address `json:"hermezRollup"`
 	// Hermez Governanze Token smartcontract address who controls some parameters and collects HEZ fee
 	// Only for test
-	GovernanceAddress ethCommon.Address
+	GovernanceAddress ethCommon.Address `json:"governanceAddress"`
 }
 
 // SlotState is the state of a slot

eth/rollup.go

@@ -101,13 +101,13 @@ var (
 
 // RollupPublicConstants are the constants of the Rollup Smart Contract
 type RollupPublicConstants struct {
-	AbsoluteMaxL1L2BatchTimeout int64
-	TokenHEZ                    ethCommon.Address
-	Verifiers                   []RollupVerifierStruct
-	HermezAuctionContract       ethCommon.Address
-	HermezGovernanceDAOAddress  ethCommon.Address
-	SafetyAddress               ethCommon.Address
-	WithdrawDelayerContract     ethCommon.Address
+	AbsoluteMaxL1L2BatchTimeout int64                  `json:"absoluteMaxL1L2BatchTimeout"`
+	TokenHEZ                    ethCommon.Address      `json:"tokenHEZ"`
+	Verifiers                   []RollupVerifierStruct `json:"verifiers"`
+	HermezAuctionContract       ethCommon.Address      `json:"hermezAuctionContract"`
+	HermezGovernanceDAOAddress  ethCommon.Address      `json:"hermezGovernanceDAOAddress"`
+	SafetyAddress               ethCommon.Address      `json:"safetyAddress"`
+	WithdrawDelayerContract     ethCommon.Address      `json:"withdrawDelayerContract"`
 }
 
 // RollupVariables are the variables of the Rollup Smart Contract
@@ -133,8 +133,8 @@ func NewQueueStruct() *QueueStruct {
 
 // RollupVerifierStruct is the information about verifiers of the Rollup Smart Contract
 type RollupVerifierStruct struct {
-	MaxTx   int64
-	NLevels int64
+	MaxTx   int64 `json:"maxTx"`
+	NLevels int64 `json:"nlevels"`
 }
 
 // RollupState represents the state of the Rollup in the Smart Contract

eth/wdelayer.go

@@ -19,11 +19,11 @@ import (
 // WDelayerConstants are the constants of the Rollup Smart Contract
 type WDelayerConstants struct {
 	// Max Withdrawal Delay
-	MaxWithdrawalDelay uint64
+	MaxWithdrawalDelay uint64 `json:"maxWithdrawalDelay"`
 	// Max Emergency mode time
-	MaxEmergencyModeTime uint64
+	MaxEmergencyModeTime uint64 `json:"maxEmergencyModeTime"`
 	// HermezRollup smartcontract address
-	HermezRollup ethCommon.Address
+	HermezRollup ethCommon.Address `json:"hermezRollup"`
 }
 
 // DepositState is the state of Deposit