115 lines
2.5 KiB
Go
115 lines
2.5 KiB
Go
package httpserver
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import (
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"context"
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"fmt"
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"net/http"
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"os"
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"os/exec"
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"os/signal"
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"service/library/configcenter"
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"service/library/servicediscovery"
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"syscall"
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"time"
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"service/library/logger"
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)
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const (
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ServerStatusFDRun = "RUN" // 服务运行中
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ServerStatusFDStop = "STOP" // 服务停止
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)
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func StartHttpServer(srv *http.Server, cfg *configcenter.DefaultConfig, ip string, port int) {
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go func() {
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if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
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logger.Fatal("listen: %v", err)
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return
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}
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}()
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// 注册服务
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go func() {
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err := registerSD(ip, port)
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if err != nil {
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logger.Fatal("registerSD: %v", err)
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return
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}
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setServerStatusFD(ServerStatusFDRun)
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}()
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done := make(chan int)
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go func() {
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quit := make(chan os.Signal)
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signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
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for {
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select {
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case <-quit:
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logger.Info("Shutdown Server ...")
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if err := servicediscovery.DeRegister(ip, port); err != nil {
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logger.Fatal("DeRegister fail: %v", err)
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}
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ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
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if err := srv.Shutdown(ctx); err != nil {
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logger.Fatal("Server Shutdown:", err)
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}
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select {
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case <-ctx.Done():
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logger.Info("timeout of 1 seconds.")
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}
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logger.Info("Server exited")
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setServerStatusFD(ServerStatusFDStop)
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cancel()
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done <- 1
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return
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}
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}
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}()
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<-done
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logger.Info("Server done")
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}
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func registerSD(ip string, port int) error {
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// 要等服务起来后再注册到consul，否则会有问题
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// 方法：调用 healthcheck
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idx := 0
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timer := time.NewTimer(time.Second * 5)
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timerRetry := time.NewTicker(time.Second * 1)
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for {
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select {
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case <-timer.C:
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return fmt.Errorf("registerSD fail, ip: %v, port: %v", ip, port)
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case <-timerRetry.C:
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idx += 1
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resp, err := http.Get(fmt.Sprintf("http://%s:%v/healthcheck", ip, port))
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if err != nil {
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logger.Error("healthcheck fail, err: %v", err)
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continue
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}
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if resp.StatusCode == http.StatusOK {
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if err := servicediscovery.Register(ip, port); err != nil {
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logger.Error("registerSD fail, ip: %v, port: %v, err: %v", ip, port, err)
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continue
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}
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return nil
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}
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}
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}
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}
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func setServerStatusFD(status string) {
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serverStatusFdPath := "/app/SERVER_STATUS_FD"
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cmd := exec.Command("sh", "-c", fmt.Sprintf("echo %s > %s", status, serverStatusFdPath))
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err := cmd.Run()
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if err != nil {
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logger.Info("run cmd fail, p: %v, err: %v", serverStatusFdPath, err)
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return
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}
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logger.Info("SetServerStatusFD success: %v", status)
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}
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