fix: use constants for primary/replica/standalone

pkg/replication/info_provider.go

@@ -4,6 +4,12 @@ import (
 	"fmt"
 )
 
+const (
+	ReplicationModeStandalone = "standalone"
+	ReplicationModePrimary = "primary"
+	ReplicationModeReplica = "replica"
+)
+
 // ReplicationNodeInfo contains information about a node in the replication topology
 type ReplicationNodeInfo struct {
 	Address      string            // Host:port of the node
@@ -41,24 +47,24 @@ func (m *Manager) GetNodeInfo() (string, string, []ReplicationNodeInfo, uint64,
 	role = m.config.Mode
 
 	// Set primary address
-	if role == "replica" {
+	if role == ReplicationModeReplica {
 		primaryAddr = m.config.PrimaryAddr
-	} else if role == "primary" {
+	} else if role == ReplicationModePrimary {
 		primaryAddr = m.config.ListenAddr
 	}
 
 	// Set last sequence
-	if role == "primary" && m.primary != nil {
+	if role == ReplicationModePrimary && m.primary != nil {
 		lastSequence = m.primary.GetLastSequence()
-	} else if role == "replica" && m.replica != nil {
+	} else if role == ReplicationModeReplica && m.replica != nil {
 		lastSequence = m.replica.GetLastAppliedSequence()
 	}
 
 	// Gather replica information
-	if role == "primary" && m.primary != nil {
+	if role == ReplicationModePrimary && m.primary != nil {
 		// Get replica sessions from primary
 		replicas = m.primary.GetReplicaInfo()
-	} else if role == "replica" {
+	} else if role == ReplicationModeReplica {
 		// Add self as a replica
 		replicas = append(replicas, ReplicationNodeInfo{
 			Address:      m.config.ListenAddr,

pkg/replication/manager.go

@@ -23,7 +23,8 @@ type ManagerConfig struct {
 	// Whether replication is enabled
 	Enabled bool
 
-	// The replication mode: "primary", "replica", or "standalone"
+	// The replication mode: ReplicationModePrimary, ReplicationModeReplica, or
+	// ReplicationModeStandalone
 	Mode string
 
 	// Address of the primary node (for replicas)
@@ -114,11 +115,11 @@ func (m *Manager) Start() error {
 	log.Info("Starting replication in %s mode", m.config.Mode)
 
 	switch m.config.Mode {
-	case "primary":
+	case ReplicationModePrimary:
 		return m.startPrimary()
-	case "replica":
+	case ReplicationModeReplica:
 		return m.startReplica()
-	case "standalone":
+	case ReplicationModeStandalone:
 		log.Info("Running in standalone mode (no replication)")
 		return nil
 	default:
@@ -180,13 +181,13 @@ func (m *Manager) Status() map[string]interface{} {
 
 	// Add mode-specific status
 	switch m.config.Mode {
-	case "primary":
+	case ReplicationModePrimary:
 		if m.primary != nil {
 			// Add information about connected replicas, etc.
 			status["listen_address"] = m.config.ListenAddr
 			// TODO: Add more detailed primary status
 		}
-	case "replica":
+	case ReplicationModeReplica:
 		if m.replica != nil {
 			status["primary_address"] = m.config.PrimaryAddr
 			status["last_applied_sequence"] = m.lastApplied