/
server.go
143 lines (115 loc) · 2.67 KB
/
server.go
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package fasthttpserver
import (
"log"
"net"
"os"
"os/signal"
"syscall"
"time"
"github.com/valyala/fasthttp"
"github.com/valyala/fasthttp/reuseport"
)
const (
defaultNetwork = "tcp"
defaultAddr = ":8080"
defaultReadTimeout = 8 * time.Second
)
type logger interface {
Printf(format string, v ...interface{})
}
// 配置数据
type Config struct {
Network string
Addr string
Reuseport bool
GracefulShutdown bool
Server *fasthttp.Server
log logger
}
// server 配置
type server struct {
Network string
Addr string
Reuseport bool
GracefulShutdown bool
fasthttpServer *fasthttp.Server
log logger
}
// 启动
func Start(conf *Config) error {
if conf.Server == nil || conf.Server.Handler == nil {
panic("Invalid fasthttp server")
}
serv := new(server)
if conf.Network == "tcp" || conf.Network == "tcp4" || conf.Network == "tcp6" {
serv.Network = conf.Network
} else if conf.Network == "" {
serv.Network = defaultNetwork
} else {
panic("Invalid network: " + conf.Network)
}
if conf.Addr == "" {
serv.Addr = defaultAddr
} else {
serv.Addr = conf.Addr
}
if conf.log == nil {
serv.log = logger(log.New(os.Stderr, "", log.LstdFlags))
} else {
serv.log = conf.log
}
serv.fasthttpServer = conf.Server
serv.fasthttpServer.Logger = serv.log
return serv.listenAndServe()
}
// 监听并服务
func (serv *server) listenAndServe() error {
ln, err := serv.getListener()
if err != nil {
return err
}
if serv.GracefulShutdown {
return serv.ServeGracefully(ln)
} else {
return serv.Serve(ln)
}
}
// 监听
func (serv *server) getListener() (net.Listener, error) {
if serv.Reuseport {
return reuseport.Listen(serv.Network, serv.Addr)
} else {
return net.Listen(serv.Network, serv.Addr)
}
}
// 服务
func (serv *server) Serve(ln net.Listener) error {
defer ln.Close()
serv.Network = ln.Addr().Network()
serv.Addr = ln.Addr().String()
serv.log.Printf("Listening on: http://%s/", serv.Addr)
return serv.fasthttpServer.Serve(ln)
}
// 可优雅关闭的服务
func (serv *server) ServeGracefully(ln net.Listener) error {
if serv.fasthttpServer.ReadTimeout <= 0 {
serv.fasthttpServer.ReadTimeout = defaultReadTimeout
}
listenErr := make(chan error, 1)
go func() {
listenErr <- serv.Serve(ln)
}()
osSignals := make(chan os.Signal, 1)
signal.Notify(osSignals, syscall.SIGINT, syscall.SIGTERM)
select {
case err := <-listenErr:
return err
case <-osSignals:
serv.log.Printf("Shutdown signal received")
if err := serv.fasthttpServer.Shutdown(); err != nil {
return err
}
serv.log.Printf("Server gracefully stopped")
}
return nil
}