chore: remove opt to remote signer, should always use remote signer

CHANGELOG.md

@@ -40,6 +40,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 ### Improvements
 
 * [#83](https://github.com/babylonlabs-io/covenant-emulator/pull/83) covenant-signer: remove go.mod
+* [#95](https://github.com/babylonlabs-io/covenant-emulator/pull/95) removed local signer option
+as the covenant emulator should only connect to a remote signer
 
 ## v0.11.3
 

cmd/covd/start.go

@@ -5,7 +5,6 @@ import (
 	"path/filepath"
 
 	covcfg "github.com/babylonlabs-io/covenant-emulator/config"
-	"github.com/babylonlabs-io/covenant-emulator/keyring"
 	"github.com/babylonlabs-io/covenant-emulator/log"
 	"github.com/babylonlabs-io/covenant-emulator/remotesigner"
 	"github.com/babylonlabs-io/covenant-emulator/util"
@@ -23,11 +22,6 @@ var startCommand = cli.Command{
 	Usage:       "Start the Covenant Emulator Daemon",
 	Description: "Start the Covenant Emulator Daemon. Note that the Covenant key pair should be created beforehand",
 	Flags: []cli.Flag{
-		cli.StringFlag{
-			Name:  passphraseFlag,
-			Usage: "The pass phrase used to encrypt the keys",
-			Value: defaultPassphrase,
-		},
 		cli.StringFlag{
 			Name:  homeFlag,
 			Usage: "The path to the covenant home directory",
@@ -59,20 +53,9 @@ func start(ctx *cli.Context) error {
 		return fmt.Errorf("failed to create rpc client for the consumer chain: %w", err)
 	}
 
-	pwd := ctx.String(passphraseFlag)
-
-	var signer covenant.Signer
-
-	if cfg.RemoteSignerEnabled {
-		signer, err = newRemoteSignerFromConfig(cfg)
-		if err != nil {
-			return fmt.Errorf("failed to create remote signer from config: %w", err)
-		}
-	} else {
-		signer, err = newSignerFromConfig(cfg, pwd)
-		if err != nil {
-			return fmt.Errorf("failed to create keyring signer from config: %w", err)
-		}
+	signer, err := newRemoteSignerFromConfig(cfg)
+	if err != nil {
+		return fmt.Errorf("failed to create remote signer from config: %w", err)
 	}
 
 	ce, err := covenant.NewCovenantEmulator(cfg, bbnClient, logger, signer)
@@ -94,16 +77,6 @@ func start(ctx *cli.Context) error {
 	return srv.RunUntilShutdown()
 }
 
-func newSignerFromConfig(cfg *covcfg.Config, passphrase string) (covenant.Signer, error) {
-	return keyring.NewKeyringSigner(
-		cfg.BabylonConfig.ChainID,
-		cfg.BabylonConfig.Key,
-		cfg.BabylonConfig.KeyDirectory,
-		cfg.BabylonConfig.KeyringBackend,
-		passphrase,
-	)
-}
-
 func newRemoteSignerFromConfig(cfg *covcfg.Config) (covenant.Signer, error) {
 	return remotesigner.NewRemoteSigner(cfg.RemoteSigner), nil
 }

config/config.go

@@ -47,8 +47,6 @@ type Config struct {
 
 	BabylonConfig *BBNConfig `group:"babylon" namespace:"babylon"`
 
-	RemoteSignerEnabled bool `long:"remote-signer-enabled" description:"if true, covenant will use the remote signer to sign transactions"`
-
 	RemoteSigner *RemoteSignerCfg `group:"remotesigner" namespace:"remotesigner"`
 }
 
@@ -134,16 +132,15 @@ func DefaultConfigWithHomePath(homePath string) Config {
 	metricsCfg := DefaultMetricsConfig()
 	remoteSignerCfg := DefaultRemoteSignerConfig()
 	cfg := Config{
-		LogLevel:            defaultLogLevel,
-		QueryInterval:       defaultQueryInterval,
-		DelegationLimit:     defaultDelegationLimit,
-		SigsBatchSize:       defaultSigsBatchSize,
-		BitcoinNetwork:      defaultBitcoinNetwork,
-		BTCNetParams:        defaultBTCNetParams,
-		Metrics:             &metricsCfg,
-		BabylonConfig:       &bbnCfg,
-		RemoteSignerEnabled: false,
-		RemoteSigner:        &remoteSignerCfg,
+		LogLevel:        defaultLogLevel,
+		QueryInterval:   defaultQueryInterval,
+		DelegationLimit: defaultDelegationLimit,
+		SigsBatchSize:   defaultSigsBatchSize,
+		BitcoinNetwork:  defaultBitcoinNetwork,
+		BTCNetParams:    defaultBTCNetParams,
+		Metrics:         &metricsCfg,
+		BabylonConfig:   &bbnCfg,
+		RemoteSigner:    &remoteSignerCfg,
 	}
 
 	if err := cfg.Validate(); err != nil {

covenant/covenant_test.go

@@ -1,6 +1,7 @@
 package covenant_test
 
 import (
+	"context"
 	"encoding/hex"
 	"fmt"
 	"math/rand"
@@ -23,7 +24,13 @@ import (
 
 	covcfg "github.com/babylonlabs-io/covenant-emulator/config"
 	"github.com/babylonlabs-io/covenant-emulator/covenant"
+	signerCfg "github.com/babylonlabs-io/covenant-emulator/covenant-signer/config"
+	"github.com/babylonlabs-io/covenant-emulator/covenant-signer/keystore/cosmos"
+	signerMetrics "github.com/babylonlabs-io/covenant-emulator/covenant-signer/observability/metrics"
+	signerApp "github.com/babylonlabs-io/covenant-emulator/covenant-signer/signerapp"
+	"github.com/babylonlabs-io/covenant-emulator/covenant-signer/signerservice"
 	"github.com/babylonlabs-io/covenant-emulator/keyring"
+	"github.com/babylonlabs-io/covenant-emulator/remotesigner"
 	"github.com/babylonlabs-io/covenant-emulator/testutil"
 	"github.com/babylonlabs-io/covenant-emulator/types"
 )
@@ -37,30 +44,72 @@ var net = &chaincfg.SimNetParams
 
 func FuzzAddCovenantSig(f *testing.F) {
 	testutil.AddRandomSeedsToFuzzer(f, 10)
+
+	// create a Covenant key pair in the keyring
+	covenantConfig := covcfg.DefaultConfig()
+
+	covenantConfig.BabylonConfig.KeyDirectory = f.TempDir()
+
+	signerConfig := signerCfg.DefaultConfig()
+	signerConfig.KeyStore.CosmosKeyStore.ChainID = covenantConfig.BabylonConfig.ChainID
+	signerConfig.KeyStore.CosmosKeyStore.KeyName = covenantConfig.BabylonConfig.Key
+	signerConfig.KeyStore.CosmosKeyStore.KeyringBackend = covenantConfig.BabylonConfig.KeyringBackend
+	signerConfig.KeyStore.CosmosKeyStore.KeyDirectory = covenantConfig.BabylonConfig.KeyDirectory
+	keyRetriever, err := cosmos.NewCosmosKeyringRetriever(signerConfig.KeyStore.CosmosKeyStore)
+	require.NoError(f, err)
+
+	covKeyPair, err := keyRetriever.Kr.CreateChainKey(
+		passphrase,
+		hdPath,
+	)
+	require.NoError(f, err)
+	require.NotNil(f, covKeyPair)
+
+	app := signerApp.NewSignerApp(
+		keyRetriever,
+	)
+
+	met := signerMetrics.NewCovenantSignerMetrics()
+	parsedConfig, err := signerConfig.Parse()
+	require.NoError(f, err)
+
+	server, err := signerservice.New(
+		context.Background(),
+		parsedConfig,
+		app,
+		met,
+	)
+	require.NoError(f, err)
+
+	signer := remotesigner.NewRemoteSigner(covenantConfig.RemoteSigner)
+
+	go func() {
+		_ = server.Start()
+	}()
+
+	// Give some time to launch server
+	time.Sleep(time.Second)
+
+	// unlock the signer before usage
+	err = signerservice.Unlock(
+		context.Background(),
+		covenantConfig.RemoteSigner.URL,
+		covenantConfig.RemoteSigner.Timeout,
+		passphrase,
+	)
+	require.NoError(f, err)
+
+	f.Cleanup(func() {
+		_ = server.Stop(context.TODO())
+	})
+
 	f.Fuzz(func(t *testing.T, seed int64) {
 		t.Log("Seed", seed)
 		r := rand.New(rand.NewSource(seed))
 
 		params := testutil.GenRandomParams(r, t)
 		mockClientController := testutil.PrepareMockedClientController(t, params)
 
-		// create a Covenant key pair in the keyring
-		covenantConfig := covcfg.DefaultConfig()
-		covenantConfig.BabylonConfig.KeyDirectory = t.TempDir()
-
-		covKeyPair, err := keyring.CreateCovenantKey(
-			covenantConfig.BabylonConfig.KeyDirectory,
-			covenantConfig.BabylonConfig.ChainID,
-			covenantConfig.BabylonConfig.Key,
-			covenantConfig.BabylonConfig.KeyringBackend,
-			passphrase,
-			hdPath,
-		)
-		require.NoError(t, err)
-
-		signer, err := keyring.NewKeyringSigner(covenantConfig.BabylonConfig.ChainID, covenantConfig.BabylonConfig.Key, covenantConfig.BabylonConfig.KeyDirectory, covenantConfig.BabylonConfig.KeyringBackend, passphrase)
-		require.NoError(t, err)
-
 		// create and start covenant emulator
 		ce, err := covenant.NewCovenantEmulator(&covenantConfig, mockClientController, zap.NewNop(), signer)
 		require.NoError(t, err)

docs/covenant-emulator-setup.md

@@ -3,7 +3,7 @@
 This document outlines the setup of the covenant-emulator
 daemon program.
 
-## Table of Contents 
+## Table of Contents
 
 1. [Prerequesites](#1-prerequisites)
 2. [Install Covenant Emulator Binary](#2-install-covenant-emulator-binary)
@@ -17,20 +17,20 @@ daemon program.
 
 To successfully complete this guide, you will need:
 
-1. A running instance of the [covenant signer](../covenant-signer) 
-  with the url that you configured it to. Please follow the 
-  [covenant signer setup guide](./covenant-signer-setup.md) to 
+1. A running instance of the [covenant signer](../covenant-signer)
+  with the url that you configured it to. Please follow the
+  [covenant signer setup guide](./covenant-signer-setup.md) to
   complete the setup of the covenant signer with your keys before proceeding.
   Note that the phase-2 covenant-signer program is a different one than the one
   used doing phase-1
-2. A connection to a Babylon node. To run your own node, please refer to the 
+2. A connection to a Babylon node. To run your own node, please refer to the
   [Babylon Node Setup Guide](https://github.com/babylonlabs-io/networks/blob/main/bbn-test-5/bbn-test-5/babylon-node/README.md).
 
 ## 2. Install covenant emulator binary
 
 If you haven't already, download [Golang 1.23](https://go.dev/dl).
 
-Once installed run: 
+Once installed, run:
 
 ```shell
 go version
@@ -69,8 +69,8 @@ echo 'export PATH=$HOME/go/bin:$PATH' >> ~/.profile
 
 ### 3.1. Initialize directories
 
-Next, we initialize the node and home directory. It should generate all of the 
-necessary files such as `covd.config`, these files will live in the `<path>` 
+Next, initialize the node and home directory by generating all of the
+necessary files such as `covd.conf`. These files will live in the `<path>`
 that you set for the `--home` with the below command.
 
 ```shell
@@ -87,9 +87,6 @@ $ ls <path>
 
 ### 3.2. Configure the covenant emulator
 
-As you have already set up the covenant signer, you can now configure the covenant 
-emulator to use it. 
-
 Use the following parameters to configure the `covd.conf` file.
 
 ```
@@ -127,9 +124,6 @@ URL = http://127.0.0.1:9792
 
 ; client when making requests to the remote signer
 Timeout = 2s
-
-; if true, covenant will use the remote signer to sign transactions
-RemoteSignerEnabled = true
 ```
 
 Below are brief explanations of the configuration entries:
@@ -144,15 +138,14 @@ Below are brief explanations of the configuration entries:
 - `KeyringBackend` - Storage backend for the keyring (os, file, kwallet, pass, test, memory)
 - `URL` - Endpoint where the remote signing service is running
 - `Timeout` - Maximum time to wait for remote signer responses
-- `RemoteSignerEnabled` - Whether to use the remote signing service
 
-Ensure that the covenant signer is running and unlocked before proceeding 
-otherwise you will be unable to run the emulator.
+Ensure that the covenant signer is running and unlocked before proceeding.
+Otherwise, you will be unable to run the emulator.
 
 ## 4. Generate key pairs
 
-The covenant emulator daemon requires the existence of a Babylon keyring that 
-signs signatures and interacts with Babylon. Use the following command to generate 
+The covenant emulator daemon requires the existence of a Babylon keyring that
+signs signatures and interacts with Babylon. Use the following command to generate
 the key:
 
 ```bash
@@ -167,20 +160,20 @@ covd create-key --key-name <name> --chain-id <chain-id> --keyring-backend <backe
 Parameters:
 - `--key-name`: Name for the key in the keyring
 - `--chain-id`: ID of the Babylon chain (e.g., bbn-test-5)
-- `--keyring-backend`: Backend for key storage, we will use `test` 
+- `--keyring-backend`: Backend for key storage, we will use `test`
   for this guide.
 
 After executing the above command, the key name will be saved in the config file
 created in the last [step](#42-configure-the-covenant-emulator).
 
-**⚡ Note:** that the `public-key` in the output should be used as one of the 
+**⚡ Note:** that the `public-key` in the output should be used as one of the
 inputs of the genesis of the Babylon chain.
 
-Also, this key will be used to pay for the fees due to the daemon submitting 
+Also, this key will be used to pay for the fees due to the daemon submitting
 signatures to Babylon.
 
-To check your balance, View your account on the 
-[Babylon Explorer](https://babylon-testnet.l2scan.co) by searching for your 
+To check your balance, View your account on the
+[Babylon Explorer](https://babylon-testnet.l2scan.co) by searching for your
 address.