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server.go
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server.go
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/*
@Date: 2021/11/10 10:55
@Author: yvanz
@File : server
*/
package apiserver
import (
"context"
"io"
"net/http"
"github.com/gin-gonic/gin"
"github.com/opentracing/opentracing-go"
ginSwagger "github.com/swaggo/gin-swagger"
"github.com/swaggo/gin-swagger/swaggerFiles"
"github.com/yvanz/gin-tmpl/pkg/ginpprof"
"github.com/yvanz/gin-tmpl/pkg/logger"
"github.com/yvanz/gin-tmpl/pkg/middleware"
"github.com/yvanz/gin-tmpl/pkg/tracer"
)
type Server struct {
conf APIConfig
logger *logger.DemoLog
adminEngine *gin.Engine
engine *gin.Engine
tracer opentracing.Tracer
traceIO io.Closer
}
// CreateNewServer create a new server with gin
func CreateNewServer(ctx context.Context, c APIConfig, opts ...ServerOption) *Server {
server, err := newServer(ctx, c, opts)
if err != nil {
logger.Fatal(err)
}
return server
}
func newServer(ctx context.Context, c APIConfig, options []ServerOption) (server *Server, err error) {
opts := &serverOptions{}
for _, o := range options {
o(opts)
}
server = &Server{
conf: c,
logger: c.buildLogger(),
}
server.initGin()
server.initAdmin()
// tracer 初始化必须在其他组件之前
if c.Tracer.LocalAgentHostPort != "" {
tra, cli, e := tracer.NewJaegerTracer(c.App.ServiceName, &c.Tracer, server.logger)
if e != nil {
err = e
return
}
server.tracer = tra
server.traceIO = cli
}
return server, c.initService(ctx, opts)
}
func (s *Server) initGin() {
switch s.conf.App.RunMode {
case RunModeRelease, RunModeProd, RunModeProduction:
gin.SetMode(gin.ReleaseMode)
case RunModeTest, RunModeDev:
gin.SetMode(gin.TestMode)
default:
gin.SetMode(gin.DebugMode)
}
g := gin.New()
g.Use(gin.Recovery(), middleware.GinFormatterLog(), middleware.Cors())
g.GET("/ping", func(c *gin.Context) {
c.JSON(http.StatusOK, map[string]interface{}{
"RetCode": 0,
"Message": "pong",
})
})
if s.conf.App.RunMode == RunModeDebug {
g.GET("/swagger/*any", ginSwagger.WrapHandler(swaggerFiles.Handler))
} else {
gin.DisableConsoleColor()
}
s.engine = g
}
func (s *Server) initAdmin() {
gin.SetMode(gin.ReleaseMode)
gin.DisableConsoleColor()
g := gin.New()
g.Use(middleware.GinFormatterLog(), gin.Recovery())
ginpprof.Wrap(g)
logger.Wrap(g)
s.adminEngine = g
}
func (s *Server) AddGinGroup(group string) *gin.RouterGroup {
return s.engine.Group(group)
}
func (s *Server) GetTracer() opentracing.Tracer {
return s.tracer
}
func (s *Server) Start() {
s.logger.Infof("starting server at %s: %d", s.conf.App.HostIP, s.conf.App.APIPort)
go func() {
s.logger.Infof("starting admin server at %s: %d", s.conf.App.HostIP, s.conf.App.AdminPort)
err := StartHTTP(s.conf.App.HostIP, s.conf.App.AdminPort, s.adminEngine)
handleError(err)
}()
var err error
if s.conf.App.CertFile != "" && s.conf.App.KeyFile != "" {
err = StartHTTPS(s.conf, s.engine)
} else {
err = StartHTTP(s.conf.App.HostIP, s.conf.App.APIPort, s.engine)
}
handleError(err)
}
func (s *Server) StartAdminOnly() {
s.logger.Infof("starting admin server at %s: %d", s.conf.App.HostIP, s.conf.App.AdminPort)
err := StartHTTP(s.conf.App.HostIP, s.conf.App.AdminPort, s.adminEngine)
handleError(err)
}
func (s *Server) Stop() {
_ = s.logger.Sync()
if s.tracer != nil {
_ = s.traceIO.Close()
}
}
func handleError(err error) {
// ErrServerClosed means the server is closed manually
if err == nil || err == http.ErrServerClosed {
return
}
logger.Fatal(err)
}