feat: add backend_v1 migration

backend_v1/pkg/utils/buffer.go

@@ -0,0 +1,26 @@
+package utils
+
+import (
+	"bufio"
+	"io"
+)
+
+// NewLogBuffer creates a buffer that can be used to capture output stream
+// and write to a logger in real time
+func NewLogBuffer(output func(string)) io.Writer {
+	reader, writer := io.Pipe()
+
+	go func() {
+		scanner := bufio.NewScanner(reader)
+		for scanner.Scan() {
+			output(scanner.Text())
+		}
+	}()
+
+	return writer
+}
+
+// NewCombinedBuffer combines multiple io.Writers
+func NewCombinedBuffer(writers ...io.Writer) io.Writer {
+	return io.MultiWriter(writers...)
+}

backend_v1/pkg/utils/build_info.go

@@ -0,0 +1,44 @@
+package utils
+
+import "fmt"
+
+// 构建信息变量，通过 ldflags 在构建时注入
+var (
+	// Version 应用版本信息
+	Version string
+
+	// BuildAt 构建时间
+	BuildAt string
+
+	// GitHash Git 提交哈希
+	GitHash string
+)
+
+// GetBuildInfo 获取构建信息
+func GetBuildInfo() map[string]string {
+	return map[string]string{
+		"version": Version,
+		"buildAt": BuildAt,
+		"gitHash": GitHash,
+	}
+}
+
+// PrintBuildInfo 打印构建信息
+func PrintBuildInfo(appName string) {
+	buildInfo := GetBuildInfo()
+
+	println("========================================")
+	printf("🚀 %s\n", appName)
+	println("========================================")
+	printf("📋 Version:    %s\n", buildInfo["version"])
+	printf("🕐 Build Time:  %s\n", buildInfo["buildAt"])
+	printf("🔗 Git Hash:   %s\n", buildInfo["gitHash"])
+	println("========================================")
+	println("🌟 Application is starting...")
+	println()
+}
+
+// 为了避免导入 fmt 包，我们使用内置的 print 和 printf 函数
+func printf(format string, args ...interface{}) {
+	print(fmt.Sprintf(format, args...))
+}