/
gin.go
180 lines (148 loc) · 3.45 KB
/
gin.go
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package httpserver
import (
"context"
"flag"
"fmt"
"github.com/gin-gonic/gin"
"github.com/thailemeetai/go-sdk/httpserver/middleware"
"github.com/thailemeetai/go-sdk/logger"
"go.opencensus.io/plugin/ochttp"
"net"
"net/http"
"strings"
"sync"
)
var (
ginMode string
ginNoLogger bool
defaultPort = 3000
)
type Config struct {
Port int `json:"http_port"`
BindAddr string `json:"http_bind_addr"`
GinNoDefault bool `json:"http_no_default"`
}
type GinService interface {
// block until ready
Port() int
isGinService()
}
type ginService struct {
Config
isEnabled bool
name string
logger logger.Logger
svr *myHttpServer
router *gin.Engine
mu *sync.Mutex
handlers []func(*gin.Engine)
//registeredID string
//registryAgent registry.Agent
}
func New(name string) *ginService {
return &ginService{
name: name,
mu: &sync.Mutex{},
handlers: []func(*gin.Engine){},
}
}
func (gs *ginService) Name() string {
return gs.name + "-gin"
}
func (gs *ginService) InitFlags() {
prefix := "gin"
flag.IntVar(&gs.Config.Port, prefix+"Port", defaultPort, "gin server Port. If 0 => get a random Port")
flag.StringVar(&gs.BindAddr, prefix+"addr", "", "gin server bind address")
flag.StringVar(&ginMode, "gin-mode", "", "gin mode")
flag.BoolVar(&ginNoLogger, "gin-no-logger", false, "disable default gin logger middleware")
}
func (gs *ginService) Configure() error {
gs.logger = logger.GetCurrent().GetLogger("gin")
if ginMode == "release" {
gin.SetMode(gin.ReleaseMode)
}
gs.logger.Debug("init gin engine...")
gs.router = gin.New()
if !gs.GinNoDefault {
if !ginNoLogger {
gs.router.Use(gin.Logger())
}
//gs.router.Use(gin.Recovery())
gs.router.Use(middleware.PanicLogger())
}
och := &ochttp.Handler{
Handler: gs.router,
}
gs.svr = &myHttpServer{
Server: http.Server{Handler: och},
}
return nil
}
func formatBindAddr(s string, p int) string {
if strings.Contains(s, ":") && !strings.Contains(s, "[") {
s = "[" + s + "]"
}
return fmt.Sprintf("%s:%d", s, p)
}
func (gs *ginService) Run() error {
if !gs.isEnabled {
return nil
}
if err := gs.Configure(); err != nil {
return err
}
for _, hdl := range gs.handlers {
hdl(gs.router)
}
addr := formatBindAddr(gs.BindAddr, gs.Config.Port)
gs.logger.Debugf("start listen tcp %s...", addr)
lis, err := net.Listen("tcp", addr)
if err != nil {
gs.logger.Fatalf("failed to listen: %v", err)
}
gs.Config.Port = getPort(lis)
gs.logger.Infof("listen on %s...", lis.Addr().String())
err = gs.svr.Serve(lis)
if err != nil && err == http.ErrServerClosed {
return nil
}
return err
}
func getPort(lis net.Listener) int {
addr := lis.Addr()
tcp, _ := net.ResolveTCPAddr(addr.Network(), addr.String())
return tcp.Port
}
func (gs *ginService) Port() int {
gs.mu.Lock()
defer gs.mu.Unlock()
return gs.Config.Port
}
func (gs *ginService) Stop() <-chan bool {
c := make(chan bool)
go func() {
if gs.svr != nil {
_ = gs.svr.Shutdown(context.Background())
}
c <- true
}()
return c
}
func (gs *ginService) URI() string {
return formatBindAddr(gs.BindAddr, gs.Config.Port)
}
func (gs *ginService) AddHandler(hdl func(*gin.Engine)) {
gs.isEnabled = true
gs.handlers = append(gs.handlers, hdl)
}
func (gs *ginService) Reload(config Config) error {
gs.Config = config
<-gs.Stop()
return gs.Run()
}
func (gs *ginService) GetConfig() Config {
return gs.Config
}
func (gs *ginService) IsRunning() bool {
return gs.svr != nil
}