refine: thread safety write intro data (#963)

Makefile

@@ -10,6 +10,10 @@ ifeq ($(UI),1)
 	BUILD_TAGS += ui_server
 endif
 
+ifeq ($(DISTRO_BUILD_TAG),1)
+	BUILD_TAGS += dashboard_distro
+endif
+
 LDFLAGS += -X "$(DASHBOARD_PKG)/pkg/utils/version.InternalVersion=$(shell grep -v '^\#' ./release-version)"
 LDFLAGS += -X "$(DASHBOARD_PKG)/pkg/utils/version.Standalone=Yes"
 LDFLAGS += -X "$(DASHBOARD_PKG)/pkg/utils/version.PDVersion=N/A"

pkg/utils/distro/default_distro_info.go

@@ -1,4 +1,4 @@
-// +build !distro
+// +build !dashboard_distro
 
 package distro
 

pkg/utils/distro/distro.go

@@ -14,12 +14,22 @@
 
 package distro
 
-var data map[string]interface{}
+import (
+	"sync/atomic"
+)
 
-func Replace(distro map[string]interface{}) {
-	data = distro
+type introData map[string]interface{}
+
+var data atomic.Value
+
+func Replace(distro introData) {
+	data.Store(distro)
 }
 
 func Data(k string) string {
-	return data[k].(string)
+	d := data.Load().(introData)
+	if d[k] == nil {
+		return k
+	}
+	return d[k].(string)
 }

scripts/generate_distro_info.sh

@@ -12,7 +12,7 @@ DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 PROJECT_DIR="$(dirname "$DIR")"
 
 if [ "${DISTRO_BUILD_TAG:-}" = "1" ]; then
-  BUILD_TAG_PARAMETER=distro
+  BUILD_TAG_PARAMETER=dashboard_distro
 else
   BUILD_TAG_PARAMETER=""
 fi