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main.go
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main.go
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package main
import (
"context"
"flag"
"fmt"
"github.com/gin-gonic/gin"
"github.com/zcpin/blog-service/global"
"github.com/zcpin/blog-service/internal/model"
"github.com/zcpin/blog-service/internal/routers"
"github.com/zcpin/blog-service/pkg/logger"
"github.com/zcpin/blog-service/pkg/setting"
"github.com/zcpin/blog-service/pkg/tracer"
"gopkg.in/natefinch/lumberjack.v2"
"log"
"net/http"
"os"
"os/signal"
"strings"
"syscall"
"time"
)
// @title 博客系统
// @version 1.0
// @description Go 博客系统
// @termsOfService https://github.com/zcpin/blog-service
func main() {
if isVersion {
fmt.Printf("build_time: %s\n", buildTime)
fmt.Printf("build_version: %s\n", buildVersion)
fmt.Printf("git_commit_id: %s\n", gitCommitID)
return
}
gin.SetMode(global.ServerSetting.RunModel)
router := routers.NewRouter()
serve := &http.Server{
Addr: ":" + global.ServerSetting.HttpPort,
Handler: router,
ReadTimeout: global.ServerSetting.ReadTimeout,
WriteTimeout: global.ServerSetting.WriteTimeout,
MaxHeaderBytes: 1 << 20,
}
go func() {
if err := serve.ListenAndServe(); err != nil && err != http.ErrServerClosed {
log.Fatalf("s.ListenAndServe err: %v", err)
}
}()
//等待中断信号
quit := make(chan os.Signal)
//接收 syscall.SIGINT 和 syscall.SIGTERM信号
signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
<-quit
log.Println("Shuting down server...")
//最大时间控制,通知该服务端它有5s的时间来处理原有的请求
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
if err := serve.Shutdown(ctx); err != nil {
log.Fatal("Server forced to shutdown:", err)
}
log.Println("Serve exiting")
//err := serve.ListenAndServe()
//if err != nil {
// log.Fatalf("服务启动失败:%v\n", err)
//}
}
var (
port string
runMode string
config string
isVersion bool
buildTime string
buildVersion string
gitCommitID string
)
func init() {
err := setupFlag()
if err != nil {
log.Fatalf("init.setupFlag err: %v", err)
}
err = setupSetting()
if err != nil {
log.Fatalf("init.setupSetting err %v", err)
}
err = setupDBEngine()
if err != nil {
log.Fatalf("init.setupDBEngine err %v", err)
}
err = setupLogger()
if err != nil {
log.Fatalf("init.setupLogger err %v", err)
}
err = setupTracer()
if err != nil {
log.Fatalf("init.setupTracer err: %v", err)
}
}
func setupSetting() error {
settings, err := setting.NewSetting(strings.Split(config, ",")...)
if err != nil {
return err
}
err = settings.ReadSection("Server", &global.ServerSetting)
if err != nil {
return err
}
err = settings.ReadSection("App", &global.AppSetting)
if err != nil {
return err
}
err = settings.ReadSection("Database", &global.DatabaseSetting)
if err != nil {
return err
}
global.ServerSetting.ReadTimeout *= time.Second
global.ServerSetting.WriteTimeout *= time.Second
err = settings.ReadSection("JWT", &global.JWTSetting)
if err != nil {
return err
}
global.JWTSetting.Expire *= time.Second
err = settings.ReadSection("Email", &global.EmailSetting)
if err != nil {
return err
}
if port != "" {
global.ServerSetting.HttpPort = port
}
if runMode != "" {
global.ServerSetting.RunModel = runMode
}
return nil
}
func setupDBEngine() error {
var err error
global.DBEngine, err = model.NewDBEngine(global.DatabaseSetting)
global.DBEngine.LogMode(true)
if err != nil {
return err
}
return nil
}
func setupLogger() error {
global.Logger = logger.NewLogger(&lumberjack.Logger{
Filename: global.AppSetting.LogSavePath + "/" + global.AppSetting.LogFileName + global.AppSetting.LogFileExt,
MaxSize: 600,
MaxAge: 10,
LocalTime: true,
}, "", log.LstdFlags).WithCaller(2)
return nil
}
func setupTracer() error {
jaegerTracer, _, err := tracer.NewJaegerTracer("blog-service", "127.0.0.1:6831")
if err != nil {
return err
}
global.Tracer = jaegerTracer
return nil
}
func setupFlag() error {
flag.StringVar(&port, "port", "", "启动端口")
flag.StringVar(&runMode, "mode", "", "启动模式")
flag.StringVar(&config, "config", "configs/", "指定要使用的配置文件路径")
flag.BoolVar(&isVersion, "version", false, "编译信息")
flag.Parse()
return nil
}