/
server.go
272 lines (235 loc) · 6.25 KB
/
server.go
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package http
import (
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"crypto/x509/pkix"
"encoding/pem"
"github.com/prometheus/common/log"
"github.com/valyala/fasthttp"
"github.com/xxxmailk/ylx/cera/router"
"math/big"
"net"
"os"
"time"
)
// simply logger
type SimpleLogger interface {
Infof(string, ...interface{})
Warnf(string, ...interface{})
Debugf(string, ...interface{})
Errorf(string, ...interface{})
Fatalf(string, ...interface{})
}
func NewSimpleLogger() log.Logger {
return log.NewLogger(os.Stdout)
}
type StartHttpServer interface {
SetLogger(l SimpleLogger)
SetHostname(hostname string)
SetRouter(handler router.IRouterHandler)
SetIdleTimeout(sec int)
Start()
UseMiddleWare(m func(ctx *fasthttp.RequestCtx) *fasthttp.RequestCtx)
AtLast(m func(ctx *fasthttp.RequestCtx) *fasthttp.RequestCtx)
}
type StartTlsServer interface {
SetLogger(l SimpleLogger)
SetHostname(hostname string)
SetRouter(handler router.IRouterHandler)
SetIdleTimeout(sec int)
StartTls()
AtLast(m func(ctx *fasthttp.RequestCtx) *fasthttp.RequestCtx)
UseMiddleWare(m func(ctx *fasthttp.RequestCtx) *fasthttp.RequestCtx)
}
type Serve struct {
ip string
port string
idleTimeout time.Duration
hostname string
logger SimpleLogger
handler fasthttp.RequestHandler
sslKey string
sslCert string
router router.IRouterHandler
middleWares []func(ctx *fasthttp.RequestCtx) *fasthttp.RequestCtx
lastFunc []func(ctx *fasthttp.RequestCtx) *fasthttp.RequestCtx
}
func (s *Serve) SetIdleTimeout(sec int) {
s.idleTimeout = time.Duration(sec) * time.Second
}
func (s *Serve) SetHostname(hostname string) {
s.hostname = hostname
}
func (s *Serve) SetHandle(h fasthttp.RequestHandler) {
s.handler = h
}
func (s *Serve) SetLogger(l SimpleLogger) {
s.logger = l
}
func (s *Serve) SetSslKeyCert(keyPath, certPath string) {
s.sslKey, s.sslCert = keyPath, certPath
}
func (s *Serve) SetRouter(handler router.IRouterHandler) {
s.logger.Infof("set router %v \n", handler)
s.router = handler
}
func (s *Serve) Start() {
s.SetHandle(s.httpHandler)
server := &fasthttp.Server{
// allocation http handle with domain name
Handler: s.handler,
IdleTimeout: s.idleTimeout,
}
if s.router == nil {
panic("please set router before server start server")
}
s.logger.Infof("starting web server and listening on %s:%s", s.ip, s.port)
err := server.ListenAndServe(net.JoinHostPort(s.ip, s.port))
if err != nil {
panic(err.Error())
}
}
func (s *Serve) StartTls() {
s.SetHandle(s.httpHandler)
server := &fasthttp.Server{
// allocation http handle with domain name
Handler: s.handler,
IdleTimeout: s.idleTimeout,
}
if s.sslCert == "" && s.sslKey == "" {
// preparing second host
cert, priv, err := GenerateCert(net.JoinHostPort("127.0.0.1", s.port))
if s.hostname != "" {
cert, priv, err = GenerateCert(s.hostname)
} else {
// todo: hostname config
s.logger.Warnf("hostname has not been configured, use 127.0.0.1:%s to generate ssl certs", s.port)
}
if err != nil {
s.logger.Errorf(err.Error())
}
err = server.AppendCertEmbed(cert, priv)
if err != nil {
s.logger.Errorf(err.Error())
}
if s.router == nil {
panic("please set router before server start server")
}
s.logger.Infof("starting TLS web server and listening on %s:%s", s.ip, s.port)
err = server.ListenAndServeTLS(s.port, "", "")
if err != nil {
s.logger.Errorf(err.Error())
}
return
}
s.logger.Infof("starting TLS web server and listening on %s:%s", s.ip, s.port)
// if ssl cert and ssl key had been set, use cert and key file to start ssl server
err := server.ListenAndServeTLS(s.port, s.sslCert, s.sslKey)
if err != nil {
s.logger.Fatalf(err.Error())
}
}
// new simple http server
// you can set your http server before start()
func NewHttpServe(ip, port string) StartHttpServer {
l := NewSimpleLogger()
host, err := os.Hostname()
if err != nil {
l.Fatalf(err.Error())
}
s := &Serve{
ip: ip,
port: port,
hostname: host,
idleTimeout: time.Duration(30) * time.Second,
logger: l,
}
return s
}
// ditto ↑
func NewTLSServe(ip, port string) StartTlsServer {
l := NewSimpleLogger()
host, err := os.Hostname()
if err != nil {
l.Fatalf(err.Error())
}
s := &Serve{
ip: ip,
port: port,
hostname: host,
idleTimeout: time.Duration(30) * time.Second,
logger: l,
}
return s
}
func GenerateCert(host string) ([]byte, []byte, error) {
priv, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
return nil, nil, err
}
serialNumberLimit := new(big.Int).Lsh(big.NewInt(1), 128)
serialNumber, err := rand.Int(rand.Reader, serialNumberLimit)
if err != nil {
return nil, nil, err
}
cert := &x509.Certificate{
SerialNumber: serialNumber,
Subject: pkix.Name{
Organization: []string{"CERA"},
},
NotBefore: time.Now(),
NotAfter: time.Now().Add(365 * 24 * time.Hour),
KeyUsage: x509.KeyUsageCertSign | x509.KeyUsageDigitalSignature,
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth, x509.ExtKeyUsageClientAuth},
SignatureAlgorithm: x509.SHA256WithRSA,
DNSNames: []string{host},
BasicConstraintsValid: true,
IsCA: true,
}
certBytes, err := x509.CreateCertificate(
rand.Reader, cert, cert, &priv.PublicKey, priv,
)
p := pem.EncodeToMemory(
&pem.Block{
Type: "PRIVATE KEY",
Bytes: x509.MarshalPKCS1PrivateKey(priv),
},
)
b := pem.EncodeToMemory(
&pem.Block{
Type: "CERTIFICATE",
Bytes: certBytes,
},
)
return b, p, err
}
func (s *Serve) UseMiddleWare(m func(ctx *fasthttp.RequestCtx) *fasthttp.RequestCtx) {
s.middleWares = append(s.middleWares, m)
}
func (s *Serve) AtLast(m func(ctx *fasthttp.RequestCtx) *fasthttp.RequestCtx) {
s.lastFunc = append(s.lastFunc, m)
}
func (s *Serve) httpHandler(ctx *fasthttp.RequestCtx) {
if err := recover(); err != nil {
panic(err)
}
// handling middleWares
if len(s.middleWares) > 0 {
for i := len(s.middleWares); i >= 0; i-- {
if i > 0 {
ctx = s.middleWares[i-1](ctx)
}
}
}
// transfer http contexts to router handler
s.router.Handler(ctx)
// handling last functions
if len(s.lastFunc) > 0 {
for i := len(s.lastFunc); i >= 0; i-- {
if i > 0 {
ctx = s.lastFunc[i-1](ctx)
}
}
}
}