fix: stats lock all routines when it cannot connect to server (#92)

stats/bridge_stats.go

@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"strings"
 	"sync"
+	"sync/atomic"
 	"time"
 
 	bridgeCore "github.com/axieinfinity/bridge-core"
@@ -15,7 +16,7 @@ import (
 	"gorm.io/gorm"
 )
 
-const bridgeVersion = "v2"
+const bridgeVersion = "v0.2.7"
 
 type NodeInfo struct {
 	Organization  string `json:"organization,omitempty" mapstructure:"organization"`
@@ -126,6 +127,7 @@ type Service struct {
 	processedBlockCh chan processedBlockMessage
 	quitCh           chan struct{}
 	store            stores.TaskStore
+	isReady          atomic.Bool
 }
 
 func NewService(node, chainId, operator, host, secret string, db *gorm.DB) {
@@ -297,6 +299,8 @@ func (s *Service) report(conn *connWrapper) error {
 func (s *Service) readLoop(conn *connWrapper) {
 	// If the read loop exits, close the connection
 	defer conn.Close()
+	// set isReady to true
+	s.isReady.Store(true)
 	log.Info("[Bridge stats] Start read loop")
 	for {
 		// Exit the function when receiving the quit signal
@@ -348,9 +352,17 @@ func (s *Service) setProcessedBlock(listener string, block uint64) error {
 }
 
 func (s *Service) SendError(listener, err string) {
+	if !s.isReady.Load() {
+		log.Info("Stats is not ready to broadcast error")
+		return
+	}
 	s.errCh <- errorMessage{Listener: listener, Err: err}
 }
 
 func (s *Service) SendProcessedBlock(listener string, block uint64) {
+	if !s.isReady.Load() {
+		log.Info("Stats is not ready to broadcast processed block")
+		return
+	}
 	s.processedBlockCh <- processedBlockMessage{Listener: listener, ProcessedBlock: block}
 }