return error from WaitForZetacoreToCreateBlocks() and SetAccountNumbe…

…r() and handle them in start.go

cmd/zetaclientd/p2p_diagnostics.go

@@ -176,6 +176,8 @@ func RunDiagnostics(startLogger zerolog.Logger, peers p2p.AddrList, hotkeyPk cry
 				startLogger.Error().Err(err).Msgf("fail to create stream to peer %s", peer)
 				continue
 			}
+
+			// write a message to the stream
 			message := fmt.Sprintf("round %d %s => %s", round, host.ID().String()[len(host.ID().String())-5:], peer.ID.String()[len(peer.ID.String())-5:])
 			_, err = stream.Write([]byte(message))
 			if err != nil {
@@ -186,7 +188,8 @@ func RunDiagnostics(startLogger zerolog.Logger, peers p2p.AddrList, hotkeyPk cry
 				}
 				continue
 			}
-			//startLogger.Debug().Msgf("wrote %d bytes", nw)
+
+			// read the echoed message
 			buf := make([]byte, 1024)
 			nr, err := stream.Read(buf)
 			if err != nil {
@@ -197,13 +200,13 @@ func RunDiagnostics(startLogger zerolog.Logger, peers p2p.AddrList, hotkeyPk cry
 				}
 				continue
 			}
-			//startLogger.Debug().Msgf("read %d bytes", nr)
 			startLogger.Debug().Msgf("echoed message: %s", string(buf[:nr]))
 			err = stream.Close()
 			if err != nil {
 				startLogger.Warn().Err(err).Msgf("fail to close stream to peer %s", peer)
 			}
 
+			// check if the message is echoed correctly
 			if string(buf[:nr]) != message {
 				startLogger.Error().Msgf("ping-pong failed with peer #(%d): %s; want %s got %s", peerCount, peer, message, string(buf[:nr]))
 				continue

cmd/zetaclientd/start.go

@@ -100,12 +100,19 @@ func start(_ *cobra.Command, _ []string) error {
 	}
 
 	// Wait until zetacore is ready to create blocks
-	ready := zetacoreClient.WaitForZetacoreToCreateBlocks()
-	if !ready {
-		return errors.New("Zetacore is not ready")
+	err = zetacoreClient.WaitForZetacoreToCreateBlocks()
+	if err != nil {
+		startLogger.Error().Err(err).Msg("WaitForZetacoreToCreateBlocks error")
+		return err
 	}
 	startLogger.Info().Msgf("Zetacore client is ready")
-	zetacoreClient.SetAccountNumber(authz.ZetaClientGranteeKey)
+
+	// Set grantee account number and sequence number
+	err = zetacoreClient.SetAccountNumber(authz.ZetaClientGranteeKey)
+	if err != nil {
+		startLogger.Error().Err(err).Msg("SetAccountNumber error")
+		return err
+	}
 
 	// cross-check chainid
 	res, err := zetacoreClient.GetNodeInfo()

zetaclient/chains/bitcoin/observer/observer.go

@@ -352,10 +352,6 @@ func (ob *Observer) GetLastBlockHeight() int64 {
 }
 
 func (ob *Observer) SetLastBlockHeightScanned(height int64) {
-	if height < 0 {
-		ob.logger.Chain.Error().Msgf("lastBlockScanned for chain %d is negative: %d", ob.chain.ChainId, height)
-		return
-	}
 	atomic.StoreInt64(&ob.lastBlockScanned, height)
 	metrics.LastScannedBlockNumber.WithLabelValues(ob.chain.ChainName.String()).Set(float64(height))
 }
@@ -670,10 +666,14 @@ func (ob *Observer) BuildBroadcastedTxMap() error {
 }
 
 func (ob *Observer) LoadLastBlock() error {
+	// Get the latest block number from node
 	bn, err := ob.rpcClient.GetBlockCount()
 	if err != nil {
 		return err
 	}
+	if bn < 0 {
+		return fmt.Errorf("LoadLastBlock: negative block number %d", bn)
+	}
 
 	//Load persisted block number
 	var lastBlockNum clienttypes.LastBlockSQLType

zetaclient/context/zetacore_context_test.go

@@ -14,16 +14,6 @@ import (
 	context "github.com/zeta-chain/zetacore/zetaclient/context"
 )
 
-func assertPanic(t *testing.T, f func(), errorLog string) {
-	defer func() {
-		r := recover()
-		if r != nil {
-			require.Contains(t, r, errorLog)
-		}
-	}()
-	f()
-}
-
 func getTestCoreContext(
 	evmChain chains.Chain,
 	evmChainParams *observertypes.ChainParams,
@@ -149,11 +139,6 @@ func TestNewZetaCoreContext(t *testing.T) {
 		}
 		zetaContext := context.NewZetacoreContext(testCfg)
 		require.NotNil(t, zetaContext)
-
-		// assert btc chain params panic because chain params are not yet updated
-		assertPanic(t, func() {
-			zetaContext.GetBTCChainParams()
-		}, "BTCChain is missing for chainID 0")
 	})
 }
 

zetaclient/zetacore/client.go

@@ -7,6 +7,7 @@ import (
 
 	"cosmossdk.io/simapp/params"
 	rpcclient "github.com/cometbft/cometbft/rpc/client"
+	"github.com/pkg/errors"
 	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
 	"github.com/zeta-chain/zetacore/app"
@@ -150,28 +151,28 @@ func (c *Client) GetAccountNumberAndSequenceNumber(_ authz.KeyType) (uint64, uin
 	return ctx.AccountRetriever.GetAccountNumberSequence(ctx, address)
 }
 
-func (c *Client) SetAccountNumber(keyType authz.KeyType) {
+// SetAccountNumber sets the account number and sequence number for the given keyType
+func (c *Client) SetAccountNumber(keyType authz.KeyType) error {
 	ctx, err := c.GetContext()
 	if err != nil {
-		c.logger.Error().Err(err).Msg("fail to get context")
-		return
+		return errors.Wrap(err, "fail to get context")
 	}
 	address, err := c.keys.GetAddress()
 	if err != nil {
-		c.logger.Error().Err(err).Msg("fail to get address")
-		return
+		return errors.Wrap(err, "fail to get address")
 	}
 	accN, seq, err := ctx.AccountRetriever.GetAccountNumberSequence(ctx, address)
 	if err != nil {
-		c.logger.Error().Err(err).Msg("fail to get account number and sequence number")
-		return
+		return errors.Wrap(err, "fail to get account number and sequence number")
 	}
 	c.accountNumber[keyType] = accN
 	c.seqNumber[keyType] = seq
+
+	return nil
 }
 
-// WaitForZetacoreToCreateBlocks returns true if zetacore is ready to create blocks
-func (c *Client) WaitForZetacoreToCreateBlocks() bool {
+// WaitForZetacoreToCreateBlocks waits for zetacore to create blocks
+func (c *Client) WaitForZetacoreToCreateBlocks() error {
 	retryCount := 0
 	for {
 		block, err := c.GetLatestZetaBlock()
@@ -182,12 +183,11 @@ func (c *Client) WaitForZetacoreToCreateBlocks() bool {
 		retryCount++
 		c.logger.Debug().Msgf("Failed to get latest Block , Retry : %d/%d", retryCount, DefaultRetryCount)
 		if retryCount > ExtendedRetryCount {
-			c.logger.Error().Msgf("Zetacore is not ready, waited for %d seconds", DefaultRetryCount*DefaultRetryInterval)
-			return false
+			return fmt.Errorf("zetacore is not ready, waited for %d seconds", DefaultRetryCount*DefaultRetryInterval)
 		}
 		time.Sleep(DefaultRetryInterval * time.Second)
 	}
-	return true
+	return nil
 }
 
 // UpdateZetacoreContext updates zetacore context