feat(evm): contract embeds, create fun token from ERC20

CHANGELOG.md

@@ -78,6 +78,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [#1922](https://github.com/NibiruChain/nibiru/pull/1922) - feat(evm): tracer option is read from the config.
 - [#1936](https://github.com/NibiruChain/nibiru/pull/1936) - feat(evm): EVM fungible token protobufs and encoding tests
 - [#1947](https://github.com/NibiruChain/nibiru/pull/1947) - fix(evm): fix FunToken state marshalling
+- [#1950](https://github.com/NibiruChain/nibiru/pull/1950) - feat(evm): Tx to create FunToken mapping from ERC20, contract embeds, and ERC20 queries.
 
 #### Dapp modules: perp, spot, oracle, etc
 

app/server/config/server_config.go

@@ -56,8 +56,8 @@ const (
 	// DefaultMaxTxGasWanted is the default gas wanted for each eth tx returned in ante handler in check tx mode
 	DefaultMaxTxGasWanted = 0
 
-	// DefaultGasCap is the default cap on gas that can be used in eth_call/estimateGas
-	DefaultGasCap uint64 = 25000000
+	// DefaultEthCallGasLimit is the default cap on gas that can be used in eth_call/estimateGas
+	DefaultEthCallGasLimit uint64 = 25_000_000
 
 	// DefaultFilterCap is the default cap for total number of filters that can be created
 	DefaultFilterCap int32 = 200
@@ -246,7 +246,7 @@ func DefaultJSONRPCConfig() *JSONRPCConfig {
 		API:                      GetDefaultAPINamespaces(),
 		Address:                  DefaultJSONRPCAddress,
 		WsAddress:                DefaultJSONRPCWsAddress,
-		GasCap:                   DefaultGasCap,
+		GasCap:                   DefaultEthCallGasLimit,
 		EVMTimeout:               DefaultEVMTimeout,
 		TxFeeCap:                 DefaultTxFeeCap,
 		FilterCap:                DefaultFilterCap,

app/server/start.go

@@ -185,8 +185,8 @@ which accepts a path for the resulting pprof file.
 	cmd.Flags().StringSlice(JSONRPCAPI, config.GetDefaultAPINamespaces(), "Defines a list of JSON-RPC namespaces that should be enabled")
 	cmd.Flags().String(JSONRPCAddress, config.DefaultJSONRPCAddress, "the JSON-RPC server address to listen on")
 	cmd.Flags().String(JSONWsAddress, config.DefaultJSONRPCWsAddress, "the JSON-RPC WS server address to listen on")
-	cmd.Flags().Uint64(JSONRPCGasCap, config.DefaultGasCap, "Sets a cap on gas that can be used in eth_call/estimateGas unit is unibi (0=infinite)")     //nolint:lll
-	cmd.Flags().Float64(JSONRPCTxFeeCap, config.DefaultTxFeeCap, "Sets a cap on transaction fee that can be sent via the RPC APIs (1 = default 1 nibi)") //nolint:lll
+	cmd.Flags().Uint64(JSONRPCGasCap, config.DefaultEthCallGasLimit, "Sets a cap on gas that can be used in eth_call/estimateGas unit is unibi (0=infinite)") //nolint:lll
+	cmd.Flags().Float64(JSONRPCTxFeeCap, config.DefaultTxFeeCap, "Sets a cap on transaction fee that can be sent via the RPC APIs (1 = default 1 nibi)")      //nolint:lll
 	cmd.Flags().Int32(JSONRPCFilterCap, config.DefaultFilterCap, "Sets the global cap for total number of filters that can be created")
 	cmd.Flags().Duration(JSONRPCEVMTimeout, config.DefaultEVMTimeout, "Sets a timeout used for eth_call (0=infinite)")
 	cmd.Flags().Duration(JSONRPCHTTPTimeout, config.DefaultHTTPTimeout, "Sets a read/write timeout for json-rpc http server (0=infinite)")

eth/rpc/rpcapi/eth_api_test.go

@@ -18,6 +18,7 @@ import (
 
 	nibirucommon "github.com/NibiruChain/nibiru/x/common"
 	"github.com/NibiruChain/nibiru/x/common/denoms"
+	"github.com/NibiruChain/nibiru/x/evm/embeds"
 	"github.com/NibiruChain/nibiru/x/evm/evmtest"
 
 	"github.com/stretchr/testify/suite"
@@ -42,7 +43,7 @@ type TestSuite struct {
 	fundedAccEthAddr    gethcommon.Address
 	fundedAccNibiAddr   sdk.AccAddress
 
-	contractData evmtest.CompiledEvmContract
+	contractData embeds.CompiledEvmContract
 }
 
 func TestSuite_RunAll(t *testing.T) {
@@ -63,7 +64,8 @@ func (s *TestSuite) SetupSuite() {
 	s.network = network
 	s.ethClient = network.Validators[0].JSONRPCClient
 
-	s.contractData = evmtest.SmartContract_FunToken.Load(s.T())
+	s.contractData, err = embeds.SmartContract_FunToken.Load()
+	s.Require().NoError(err)
 
 	testAccPrivateKey, _ := crypto.GenerateKey()
 	s.fundedAccPrivateKey = testAccPrivateKey

proto/eth/evm/v1/tx.proto

@@ -20,6 +20,11 @@ service Msg {
   // UpdateParams defined a governance operation for updating the x/evm module parameters.
   // The authority is hard-coded to the Cosmos SDK x/gov module account
   rpc UpdateParams(MsgUpdateParams) returns (MsgUpdateParamsResponse);
+
+  // CreateFunToken: Create a "FunToken" mapping. Either the ERC20 contract
+  // address can be given to create the mapping to a bank coin, or the
+  // denomination for a bank coin can be given to create the mapping to an ERC20.
+  rpc CreateFunToken(MsgCreateFunToken) returns (MsgCreateFunTokenResponse);
 }
 
 // MsgEthereumTx encapsulates an Ethereum transaction as an SDK message.
@@ -176,3 +181,25 @@ message MsgUpdateParams {
 // MsgUpdateParamsResponse defines the response structure for executing a
 // MsgUpdateParams message.
 message MsgUpdateParamsResponse {}
+
+// MsgCreateFunToken: Arguments to create a "FunToken" mapping. Either the ERC20
+// contract address can be given to create the mapping to a bank coin, or the
+// denomination for a bank coin can be given to create the mapping to an ERC20.
+message MsgCreateFunToken {
+  // Hexadecimal address of the ERC20 token to which the `FunToken` maps
+  string from_erc20 = 1 [
+    (gogoproto.customtype) = "github.com/NibiruChain/nibiru/eth.HexAddr",
+    (gogoproto.nullable)   = false
+  ];
+
+  // Coin denomination in the Bank Module.
+  string from_bank_denom = 2;
+
+  // Sender: Address for the signer of the transaction.
+  string sender = 3;
+}
+
+message MsgCreateFunTokenResponse {
+  // Fungible token mapping corresponding to ERC20 tokens.
+  eth.evm.v1.FunToken funtoken_mapping = 1 [(gogoproto.nullable) = false];
+}

x/evm/const.go

@@ -3,7 +3,8 @@ package evm
 
 import (
 	"github.com/NibiruChain/collections"
-	"github.com/ethereum/go-ethereum/common"
+	authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
+	gethcommon "github.com/ethereum/go-ethereum/common"
 )
 
 const (
@@ -49,12 +50,12 @@ const (
 var KeyPrefixBzAccState = KeyPrefixAccState.Prefix()
 
 // PrefixAccStateEthAddr returns a prefix to iterate over a given account storage.
-func PrefixAccStateEthAddr(address common.Address) []byte {
+func PrefixAccStateEthAddr(address gethcommon.Address) []byte {
 	return append(KeyPrefixBzAccState, address.Bytes()...)
 }
 
 // StateKey defines the full key under which an account state is stored.
-func StateKey(address common.Address, key []byte) []byte {
+func StateKey(address gethcommon.Address, key []byte) []byte {
 	return append(PrefixAccStateEthAddr(address), key...)
 }
 
@@ -71,3 +72,15 @@ const (
 	// CallTypeSmart call type is used in case of smart contract methods calls
 	CallTypeSmart
 )
+
+// ModuleAddressEVM: Module account address as a `gethcommon.Address`.
+func ModuleAddressEVM() gethcommon.Address {
+	if len(evmModuleAddr) == 0 {
+		evmModuleAddr = gethcommon.BytesToAddress(
+			authtypes.NewModuleAddress(ModuleName).Bytes(),
+		)
+	}
+	return evmModuleAddr
+}
+
+var evmModuleAddr gethcommon.Address

x/evm/deps.go

@@ -4,6 +4,7 @@ package evm
 import (
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
+	bank "github.com/cosmos/cosmos-sdk/x/bank/types"
 	stakingtypes "github.com/cosmos/cosmos-sdk/x/staking/types"
 	gethcore "github.com/ethereum/go-ethereum/core"
 	gethcoretypes "github.com/ethereum/go-ethereum/core/types"
@@ -29,6 +30,9 @@ type BankKeeper interface {
 	SendCoinsFromModuleToAccount(ctx sdk.Context, senderModule string, recipientAddr sdk.AccAddress, amt sdk.Coins) error
 	MintCoins(ctx sdk.Context, moduleName string, amt sdk.Coins) error
 	BurnCoins(ctx sdk.Context, moduleName string, amt sdk.Coins) error
+
+	GetDenomMetaData(ctx sdk.Context, denom string) (metadata bank.Metadata, isFound bool)
+	SetDenomMetaData(ctx sdk.Context, denomMetaData bank.Metadata)
 }
 
 // StakingKeeper returns the historical headers kept in store.

x/evm/embeds/ERC20Minter.sol

@@ -0,0 +1,76 @@
+// SPDX-License-Identifier: MIT
+
+pragma solidity 0.8.19;
+
+import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";
+import "@openzeppelin/contracts/access/Ownable.sol";
+
+/**
+ * @dev {ERC20} token, including:
+ *
+ *  - ability for holders to burn (destroy) their tokens
+ *  - a minter role that allows for token minting (creation)
+ *
+ * The contract owner is set automatically in the constructor as the
+ * deployer due to "Ownable".
+ * 
+ * The Context contract is inherited indirectly through "ERC20" and "Ownable".
+ *
+ * The account that deploys the contract will be able to mint and burn tokens.
+ */
+contract ERC20Minter is ERC20, ERC20Burnable, Ownable {
+  uint8 private _decimals;
+
+  /**
+    * @dev Grants `DEFAULT_ADMIN_ROLE`, `MINTER_ROLE` to the
+    * account that deploys the contract and customizes tokens decimals
+    *
+    * See {ERC20-constructor}.
+    */
+  constructor(string memory name, string memory symbol, uint8 decimals_)
+    ERC20(name, symbol) {
+      _setupDecimals(decimals_);
+  }
+
+  /**
+    * @dev Sets `_decimals` as `decimals_ once at Deployment'
+    */
+  function _setupDecimals(uint8 decimals_) private {
+    _decimals = decimals_;
+  }
+
+  /**
+    * @dev Overrides the `decimals()` method with custom `_decimals`
+    */
+  function decimals() public view virtual override returns (uint8) {
+    return _decimals;
+  }
+
+  /**
+    * @dev Creates `amount` new tokens for `to`.
+    *
+    * See {ERC20-_mint}.
+    *
+    * Requirements:
+    *
+    * - the caller must have the `MINTER_ROLE`.
+    */
+  function mint(address to, uint256 amount) public virtual onlyOwner {
+      _mint(to, amount);
+  }
+
+   /**
+   * @dev Destroys `amount` new tokens for `to`.
+   *
+   * See {ERC20-_burn}.
+   *
+   * Requirements:
+   *
+   * - the caller must have the `MINTER_ROLE`.
+   */
+  function burnCoins(address from, uint256 amount) public virtual onlyOwner {
+      _burn(from, amount);
+  }
+
+}