chore(hlao/app): improve logging (#1858)

Improve halo logs

issue: none

halo/app/lazyvoter.go

@@ -75,6 +75,10 @@ func (l *voterLoader) LazyLoad(
 		log.Warn(ctx, "Flag --xchain-evm-rpc-endpoints empty. The app will crash if it becomes a validator since it cannot perform xchain voting duties", nil)
 	}
 
+	if !l.isValidator() {
+		log.Info(ctx, "Local halo node is not a validator")
+	}
+
 	// Wait until this node becomes a validator before initializing voter.
 	// This mitigates crashes due to invalid rpc endpoint config in non-validator nodes.
 	backoff := expbackoff.New(ctx, expbackoff.WithPeriodicConfig(time.Second))
@@ -85,6 +89,8 @@ func (l *voterLoader) LazyLoad(
 		}
 	}
 
+	log.Info(ctx, "🫡 Local halo node is a validator, starting voter")
+
 	if len(endpoints) == 0 {
 		// Note that this negatively affects chain liveness, but xchain liveness already negatively affected so rather
 		// highlight the issue to the operator by crashing. #allornothing

halo/app/monitor.go

@@ -149,7 +149,9 @@ func monitorEVMOnce(ctx context.Context, ethCl ethclient.Client) error {
 func dirSize(path string) (int64, error) {
 	var size int64
 	err := filepath.Walk(path, func(_ string, info os.FileInfo, err error) error {
-		if err != nil {
+		if os.IsNotExist(err) {
+			return nil // Ignore files deleted during walk
+		} else if err != nil {
 			return err
 		}
 

halo/app/start.go

@@ -2,6 +2,7 @@ package app
 
 import (
 	"context"
+	"encoding/hex"
 	"os"
 	"time"
 
@@ -21,11 +22,13 @@ import (
 	"github.com/cometbft/cometbft/crypto"
 	"github.com/cometbft/cometbft/node"
 	"github.com/cometbft/cometbft/p2p"
+	"github.com/cometbft/cometbft/privval"
 	"github.com/cometbft/cometbft/proxy"
 	rpclocal "github.com/cometbft/cometbft/rpc/client/local"
 	cmttypes "github.com/cometbft/cometbft/types"
 
 	"github.com/ethereum/go-ethereum/common"
+	ethcrypto "github.com/ethereum/go-ethereum/crypto"
 
 	"cosmossdk.io/store"
 	pruningtypes "cosmossdk.io/store/pruning/types"
@@ -86,7 +89,7 @@ func Run(ctx context.Context, cfg Config) error {
 // Note that the original context used to start the app must be canceled first
 // before calling the stop function and a fresh context should be passed into the stop function.
 func Start(ctx context.Context, cfg Config) (<-chan error, func(context.Context) error, error) {
-	log.Info(ctx, "Starting halo consensus client")
+	log.Info(ctx, "Starting halo consensus client", "moniker", cfg.Comet.Moniker)
 
 	if err := cfg.Verify(); err != nil {
 		return nil, nil, errors.Wrap(err, "verify halo config")
@@ -108,6 +111,7 @@ func Start(ctx context.Context, cfg Config) (<-chan error, func(context.Context)
 	if err != nil {
 		return nil, nil, errors.Wrap(err, "load validator key")
 	}
+	logPrivVal(ctx, privVal)
 
 	db, err := dbm.NewDB("application", cfg.BackendType(), cfg.DataDir())
 	if err != nil {
@@ -410,3 +414,17 @@ func serverAppOptsFromCfg(cfg Config) serverAppOpts {
 		sdkserver.FlagUnsafeSkipUpgrades: cfg.UnsafeSkipUpgrades,
 	}
 }
+
+// logPrivVal logs the private validator key details.
+func logPrivVal(ctx context.Context, privVal *privval.FilePV) {
+	pk := privVal.Key.PubKey
+	ethPK, err := ethcrypto.DecompressPubkey(pk.Bytes())
+	if err != nil {
+		return
+	}
+
+	log.Info(ctx, "Loaded consensus private validator key from disk",
+		"pubkey", hex.EncodeToString(pk.Bytes()),
+		"comet_addr", pk.Address(),
+		"eth_addr", ethcrypto.PubkeyToAddress(*ethPK))
+}