feat: support multiple btc chain config

changelog.md

@@ -46,6 +46,12 @@
 * [2681](https://github.com/zeta-chain/node/pull/2681) - implement `MsgUpdateERC20CustodyPauseStatus` to pause or unpause ERC20 Custody contract (to be used for the migration process for smart contract V2)
 * [2644](https://github.com/zeta-chain/node/pull/2644) - add created_timestamp to cctx status
 * [2673](https://github.com/zeta-chain/node/pull/2673) - add relayer key importer, encryption and decryption
+* [2633](https://github.com/zeta-chain/node/pull/2633) - support for stateful precompiled contracts
+* [2788](https://github.com/zeta-chain/node/pull/2788) - add common importable zetacored rpc package
+* [2784](https://github.com/zeta-chain/node/pull/2784) - staking precompiled contract
+* [2795](https://github.com/zeta-chain/node/pull/2795) - support restricted address in Solana
+* [2861](https://github.com/zeta-chain/node/pull/2861) - emit events from staking precompile
+* [2870](https://github.com/zeta-chain/node/pull/2870) - support for multiple Bitcoin chains in the zetaclient
 * [2825](https://github.com/zeta-chain/node/pull/2825) - add Bitcoin inscriptions support
 
 ### Refactor

cmd/zetaclientd/debug.go

@@ -169,17 +169,21 @@ func debugCmd(_ *cobra.Command, args []string) error {
 			fmt.Println("CoinType not detected")
 		}
 		fmt.Println("CoinType : ", coinType)
-	} else if chain.IsUTXO() {
+	} else if chain.IsBitcoin() {
 		btcObserver := btcobserver.Observer{}
 		btcObserver.WithZetacoreClient(client)
 		btcObserver.WithChain(*chainProto)
+		btcConfig, found := cfg.GetBTCConfig(chainID)
+		if !found {
+			return fmt.Errorf("unable to find config for BTC chain %d", chainID)
+		}
 		connCfg := &rpcclient.ConnConfig{
-			Host:         cfg.BitcoinConfig.RPCHost,
-			User:         cfg.BitcoinConfig.RPCUsername,
-			Pass:         cfg.BitcoinConfig.RPCPassword,
+			Host:         btcConfig.RPCHost,
+			User:         btcConfig.RPCUsername,
+			Pass:         btcConfig.RPCPassword,
 			HTTPPostMode: true,
 			DisableTLS:   true,
-			Params:       cfg.BitcoinConfig.RPCParams,
+			Params:       btcConfig.RPCParams,
 		}
 
 		btcClient, err := rpcclient.New(connCfg, nil)

cmd/zetaclientd/start.go

@@ -230,7 +230,7 @@ func start(_ *cobra.Command, _ []string) error {
 		return err
 	}
 
-	btcChains := appContext.FilterChains(zctx.Chain.IsUTXO)
+	btcChains := appContext.FilterChains(zctx.Chain.IsBitcoin)
 	switch {
 	case len(btcChains) == 0:
 		return errors.New("no BTC chains found")

cmd/zetaclientd/start_utils.go

@@ -3,7 +3,6 @@ package main
 import (
 	"fmt"
 	"net"
-	"net/url"
 	"strings"
 	"time"
 
@@ -53,41 +52,34 @@ func validatePeer(seedPeer string) error {
 	return nil
 }
 
-// maskCfg sensitive fields are masked, currently only the EVM endpoints and bitcoin credentials,
+// maskCfg sensitive fields are masked, currently only the endpoints and bitcoin credentials,
 //
 //	other fields can be added.
 func maskCfg(cfg config.Config) string {
+	// Make a copy of the config
 	maskedCfg := cfg
 
-	maskedCfg.BitcoinConfig = config.BTCConfig{
-		RPCUsername: cfg.BitcoinConfig.RPCUsername,
-		RPCPassword: cfg.BitcoinConfig.RPCPassword,
-		RPCHost:     cfg.BitcoinConfig.RPCHost,
-		RPCParams:   cfg.BitcoinConfig.RPCParams,
-	}
+	// Mask EVM endpoints
 	maskedCfg.EVMChainConfigs = map[int64]config.EVMConfig{}
 	for key, val := range cfg.EVMChainConfigs {
 		maskedCfg.EVMChainConfigs[key] = config.EVMConfig{
 			Chain:    val.Chain,
-			Endpoint: val.Endpoint,
+			Endpoint: "",
 		}
 	}
 
-	// Mask Sensitive data
-	for _, chain := range maskedCfg.EVMChainConfigs {
-		if chain.Endpoint == "" {
-			continue
-		}
-		endpointURL, err := url.Parse(chain.Endpoint)
-		if err != nil {
-			continue
+	// Mask BTC endpoints and credentials
+	maskedCfg.BTCChainConfigs = map[int64]config.BTCConfig{}
+	for key, val := range cfg.BTCChainConfigs {
+		maskedCfg.BTCChainConfigs[key] = config.BTCConfig{
+			RPCParams: val.RPCParams,
 		}
-		chain.Endpoint = endpointURL.Hostname()
+	}
+	maskedCfg.BitcoinConfig = config.BTCConfig{
+		RPCParams: cfg.BitcoinConfig.RPCParams,
 	}
 
-	// mask endpoints
-	maskedCfg.BitcoinConfig.RPCUsername = ""
-	maskedCfg.BitcoinConfig.RPCPassword = ""
+	// Mask Solana endpoint
 	maskedCfg.SolanaConfig.Endpoint = ""
 
 	return maskedCfg.String()

zetaclient/config/config_chain.go

@@ -14,15 +14,15 @@ const (
 func New(setDefaults bool) Config {
 	cfg := Config{
 		EVMChainConfigs: make(map[int64]EVMConfig),
-		BitcoinConfig:   BTCConfig{},
+		BTCChainConfigs: make(map[int64]BTCConfig),
 
 		mu: &sync.RWMutex{},
 	}
 
 	if setDefaults {
-		cfg.BitcoinConfig = bitcoinConfigRegnet()
-		cfg.SolanaConfig = solanaConfigLocalnet()
 		cfg.EVMChainConfigs = evmChainsConfigs()
+		cfg.BTCChainConfigs = btcChainsConfigs()
+		cfg.SolanaConfig = solanaConfigLocalnet()
 	}
 
 	return cfg
@@ -31,7 +31,7 @@ func New(setDefaults bool) Config {
 // bitcoinConfigRegnet contains Bitcoin config for regnet
 func bitcoinConfigRegnet() BTCConfig {
 	return BTCConfig{
-		RPCUsername: "smoketest", // smoketest is the previous name for E2E test, we keep this name for compatibility between client versions in upgrade test
+		RPCUsername: "e2etest",
 		RPCPassword: "123",
 		RPCHost:     "bitcoin:18443",
 		RPCParams:   "regtest",
@@ -77,3 +77,10 @@ func evmChainsConfigs() map[int64]EVMConfig {
 		},
 	}
 }
+
+// btcChainsConfigs contains BTC chain configs
+func btcChainsConfigs() map[int64]BTCConfig {
+	return map[int64]BTCConfig{
+		chains.BitcoinRegtest.ChainId: bitcoinConfigRegnet(),
+	}
+}

zetaclient/config/types.go

@@ -88,8 +88,10 @@ type Config struct {
 
 	// chain configs
 	EVMChainConfigs map[int64]EVMConfig `json:"EVMChainConfigs"`
-	BitcoinConfig   BTCConfig           `json:"BitcoinConfig"`
-	SolanaConfig    SolanaConfig        `json:"SolanaConfig"`
+	BTCChainConfigs map[int64]BTCConfig `json:"BTCChainConfigs"`
+	// Deprecated: the 'BitcoinConfig' will be removed once the 'BTCChainConfigs' is fully adopted
+	BitcoinConfig BTCConfig    `json:"BitcoinConfig"`
+	SolanaConfig  SolanaConfig `json:"SolanaConfig"`
 
 	// compliance config
 	ComplianceConfig ComplianceConfig `json:"ComplianceConfig"`
@@ -101,8 +103,9 @@ type Config struct {
 func (c Config) GetEVMConfig(chainID int64) (EVMConfig, bool) {
 	c.mu.RLock()
 	defer c.mu.RUnlock()
-	evmCfg, found := c.EVMChainConfigs[chainID]
-	return evmCfg, found
+
+	evmCfg := c.EVMChainConfigs[chainID]
+	return evmCfg, !evmCfg.Empty()
 }
 
 // GetAllEVMConfigs returns a map of all EVM configs
@@ -118,12 +121,19 @@ func (c Config) GetAllEVMConfigs() map[int64]EVMConfig {
 	return copied
 }
 
-// GetBTCConfig returns the BTC config
-func (c Config) GetBTCConfig() (BTCConfig, bool) {
+// GetBTCConfig returns the BTC config for the given chain ID
+func (c Config) GetBTCConfig(chainID int64) (BTCConfig, bool) {
 	c.mu.RLock()
 	defer c.mu.RUnlock()
 
-	return c.BitcoinConfig, c.BitcoinConfig != (BTCConfig{})
+	// we prefer 'BTCChainConfigs' over 'BitcoinConfig' but still fallback to be backward compatible
+	// this will allow new 'zetaclientd' binary to work with old config file
+	btcCfg, found := c.BTCChainConfigs[chainID]
+	if !found || btcCfg.Empty() {
+		btcCfg = c.BitcoinConfig
+	}
+
+	return btcCfg, !btcCfg.Empty()
 }
 
 // GetSolanaConfig returns the Solana config
@@ -175,5 +185,9 @@ func (c Config) GetRelayerKeyPath() string {
 }
 
 func (c EVMConfig) Empty() bool {
-	return c.Endpoint == "" && c.Chain.IsEmpty()
+	return c.Endpoint == "" || c.Chain.IsEmpty()
+}
+
+func (c BTCConfig) Empty() bool {
+	return c.RPCHost == ""
 }

zetaclient/config/types_test.go

@@ -4,6 +4,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/require"
+	"github.com/zeta-chain/node/pkg/chains"
 	"github.com/zeta-chain/node/zetaclient/config"
 )
 
@@ -14,3 +15,111 @@ func Test_GetRelayerKeyPath(t *testing.T) {
 	// should return default relayer key path
 	require.Equal(t, config.DefaultRelayerKeyPath, cfg.GetRelayerKeyPath())
 }
+
+func Test_GetEVMConfig(t *testing.T) {
+	chain := chains.Sepolia
+	chainID := chains.Sepolia.ChainId
+
+	t.Run("should find non-empty evm config", func(t *testing.T) {
+		// create config with defaults
+		cfg := config.New(true)
+
+		// set valid evm endpoint
+		cfg.EVMChainConfigs[chainID] = config.EVMConfig{
+			Chain:    chain,
+			Endpoint: "localhost",
+		}
+
+		// should return non-empty evm config
+		evmCfg, found := cfg.GetEVMConfig(chainID)
+		require.True(t, found)
+		require.False(t, evmCfg.Empty())
+	})
+
+	t.Run("should not find evm config if endpoint is empty", func(t *testing.T) {
+		// create config with defaults
+		cfg := config.New(true)
+
+		// should not find evm config because endpoint is empty
+		_, found := cfg.GetEVMConfig(chainID)
+		require.False(t, found)
+	})
+
+	t.Run("should not find evm config if chain is empty", func(t *testing.T) {
+		// create config with defaults
+		cfg := config.New(true)
+
+		// set empty chain
+		cfg.EVMChainConfigs[chainID] = config.EVMConfig{
+			Chain:    chains.Chain{},
+			Endpoint: "localhost",
+		}
+
+		// should not find evm config because chain is empty
+		_, found := cfg.GetEVMConfig(chainID)
+		require.False(t, found)
+	})
+}
+
+func Test_GetBTCConfig(t *testing.T) {
+	tests := []struct {
+		name    string
+		chainID int64
+		oldCfg  config.BTCConfig
+		btcCfg  *config.BTCConfig
+		want    bool
+	}{
+		{
+			name:    "should find non-empty btc config",
+			chainID: chains.BitcoinRegtest.ChainId,
+			btcCfg: &config.BTCConfig{
+				RPCHost: "localhost",
+			},
+			want: true,
+		},
+		{
+			name:    "should fallback to old 'BitcoinConfig' if new config is not set",
+			chainID: chains.BitcoinRegtest.ChainId,
+			oldCfg: config.BTCConfig{
+				RPCHost: "old_host",
+			},
+			btcCfg: nil, // new config is not set
+			want:   true,
+		},
+		{
+			name:    "should fallback to old config but still can't find btc config as it's empty",
+			chainID: chains.BitcoinRegtest.ChainId,
+			oldCfg: config.BTCConfig{
+				RPCUsername: "user",
+				RPCPassword: "pass",
+				RPCHost:     "", // empty config
+				RPCParams:   "regtest",
+			},
+			btcCfg: &config.BTCConfig{
+				RPCUsername: "user",
+				RPCPassword: "pass",
+				RPCHost:     "", // empty config
+				RPCParams:   "regtest",
+			},
+			want: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// create config with defaults
+			cfg := config.New(true)
+
+			// set both new and old btc config
+			cfg.BitcoinConfig = tt.oldCfg
+			if tt.btcCfg != nil {
+				cfg.BTCChainConfigs[tt.chainID] = *tt.btcCfg
+			}
+
+			// should return btc config
+			btcCfg, found := cfg.GetBTCConfig(tt.chainID)
+			require.Equal(t, tt.want, found)
+			require.Equal(t, tt.want, !btcCfg.Empty())
+		})
+	}
+}

zetaclient/context/app_test.go

@@ -30,7 +30,7 @@ func TestAppContext(t *testing.T) {
 		ttsPubKey = "tssPubKeyTest"
 	)
 
-	testCfg.BitcoinConfig.RPCUsername = "abc"
+	testCfg.BTCChainConfigs[111] = config.BTCConfig{RPCUsername: "satoshi"}
 
 	ethParams := types.GetDefaultEthMainnetChainParams()
 	ethParams.IsSupported = true
@@ -106,7 +106,7 @@ func TestAppContext(t *testing.T) {
 		ethChain, err := appContext.GetChain(1)
 		assert.NoError(t, err)
 		assert.True(t, ethChain.IsEVM())
-		assert.False(t, ethChain.IsUTXO())
+		assert.False(t, ethChain.IsBitcoin())
 		assert.False(t, ethChain.IsSolana())
 		assert.Equal(t, ethParams, ethChain.Params())
 
@@ -121,7 +121,7 @@ func TestAppContext(t *testing.T) {
 		assert.ElementsMatch(t, expectedIDs, appContext.ListChainIDs())
 
 		// Check config
-		assert.Equal(t, "abc", appContext.Config().BitcoinConfig.RPCUsername)
+		assert.Equal(t, "satoshi", appContext.Config().BTCChainConfigs[111].RPCUsername)
 
 		t.Run("edge-cases", func(t *testing.T) {
 			for _, tt := range []struct {

zetaclient/context/chain.go

@@ -157,7 +157,7 @@ func (c Chain) IsZeta() bool {
 	return chains.IsZetaChain(c.ID(), c.registry.additionalChains)
 }
 
-func (c Chain) IsUTXO() bool {
+func (c Chain) IsBitcoin() bool {
 	return chains.IsBitcoinChain(c.ID(), c.registry.additionalChains)
 }
 

zetaclient/context/chain_test.go

@@ -73,7 +73,7 @@ func TestChainRegistry(t *testing.T) {
 		ethChain, err := r.Get(eth.ChainId)
 		require.NoError(t, err)
 		require.True(t, ethChain.IsEVM())
-		require.False(t, ethChain.IsUTXO())
+		require.False(t, ethChain.IsBitcoin())
 		require.False(t, ethChain.IsSolana())
 		require.Equal(t, ethParams, ethChain.Params())
 	})

zetaclient/orchestrator/bootstap_test.go

@@ -49,7 +49,7 @@ func TestCreateSignerMap(t *testing.T) {
 			Endpoint: testutils.MockEVMRPCEndpoint,
 		}
 
-		cfg.BitcoinConfig = btcConfig
+		cfg.BTCChainConfigs[chains.BitcoinMainnet.ChainId] = btcConfig
 
 		// Given AppContext
 		app := zctx.New(cfg, nil, log)
@@ -227,7 +227,7 @@ func TestCreateChainObserverMap(t *testing.T) {
 			Endpoint: evmServer.Endpoint,
 		}
 
-		cfg.BitcoinConfig = btcConfig
+		cfg.BTCChainConfigs[chains.BitcoinMainnet.ChainId] = btcConfig
 		cfg.SolanaConfig = solConfig
 
 		// Given AppContext