forked from labstack/echo
/
server.go
206 lines (185 loc) · 4.99 KB
/
server.go
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package standard
import (
"crypto/tls"
"net"
"net/http"
"sync"
"time"
"github.com/labstack/echo"
"github.com/labstack/echo/engine"
"github.com/labstack/echo/log"
glog "github.com/labstack/gommon/log"
)
type (
// Server implements `engine.Server`.
Server struct {
*http.Server
config engine.Config
handler engine.Handler
logger log.Logger
pool *pool
}
pool struct {
request sync.Pool
response sync.Pool
responseAdapter sync.Pool
header sync.Pool
url sync.Pool
}
)
// New returns `Server` instance with provided listen address.
func New(addr string) *Server {
c := engine.Config{Address: addr}
return WithConfig(c)
}
// WithTLS returns `Server` instance with provided TLS config.
func WithTLS(addr, certFile, keyFile string) *Server {
c := engine.Config{
Address: addr,
TLSCertFile: certFile,
TLSKeyFile: keyFile,
}
return WithConfig(c)
}
// WithConfig returns `Server` instance with provided config.
func WithConfig(c engine.Config) (s *Server) {
s = &Server{
Server: new(http.Server),
config: c,
pool: &pool{
request: sync.Pool{
New: func() interface{} {
return &Request{logger: s.logger}
},
},
response: sync.Pool{
New: func() interface{} {
return &Response{logger: s.logger}
},
},
responseAdapter: sync.Pool{
New: func() interface{} {
return &responseAdapter{}
},
},
header: sync.Pool{
New: func() interface{} {
return &Header{}
},
},
url: sync.Pool{
New: func() interface{} {
return &URL{}
},
},
},
handler: engine.HandlerFunc(func(req engine.Request, res engine.Response) {
panic("echo: handler not set, use `Server#SetHandler()` to set it.")
}),
logger: glog.New("echo"),
}
s.ReadTimeout = c.ReadTimeout
s.WriteTimeout = c.WriteTimeout
s.Addr = c.Address
s.Handler = s
return
}
// SetHandler implements `engine.Server#SetHandler` function.
func (s *Server) SetHandler(h engine.Handler) {
s.handler = h
}
// SetLogger implements `engine.Server#SetLogger` function.
func (s *Server) SetLogger(l log.Logger) {
s.logger = l
}
// Start implements `engine.Server#Start` function.
func (s *Server) Start() error {
if s.config.Listener == nil {
ln, err := net.Listen("tcp", s.config.Address)
if err != nil {
return err
}
if s.config.TLSCertFile != "" && s.config.TLSKeyFile != "" {
// TODO: https://github.com/golang/go/commit/d24f446a90ea94b87591bf16228d7d871fec3d92
config := &tls.Config{}
if !s.config.DisableHTTP2 {
config.NextProtos = append(config.NextProtos, "h2")
}
config.Certificates = make([]tls.Certificate, 1)
config.Certificates[0], err = tls.LoadX509KeyPair(s.config.TLSCertFile, s.config.TLSKeyFile)
if err != nil {
return err
}
s.config.Listener = tls.NewListener(tcpKeepAliveListener{ln.(*net.TCPListener)}, config)
} else {
s.config.Listener = tcpKeepAliveListener{ln.(*net.TCPListener)}
}
}
return s.Serve(s.config.Listener)
}
// Stop implements `engine.Server#Stop` function.
func (s *Server) Stop() error {
return s.config.Listener.Close()
}
// ServeHTTP implements `http.Handler` interface.
func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
// Request
req := s.pool.request.Get().(*Request)
reqHdr := s.pool.header.Get().(*Header)
reqURL := s.pool.url.Get().(*URL)
reqHdr.reset(r.Header)
reqURL.reset(r.URL)
req.reset(r, reqHdr, reqURL)
// Response
res := s.pool.response.Get().(*Response)
resAdpt := s.pool.responseAdapter.Get().(*responseAdapter)
resAdpt.reset(res)
resHdr := s.pool.header.Get().(*Header)
resHdr.reset(w.Header())
res.reset(w, resAdpt, resHdr)
s.handler.ServeHTTP(req, res)
// Return to pool
s.pool.request.Put(req)
s.pool.header.Put(reqHdr)
s.pool.url.Put(reqURL)
s.pool.response.Put(res)
s.pool.header.Put(resHdr)
}
// WrapHandler wraps `http.Handler` into `echo.HandlerFunc`.
func WrapHandler(h http.Handler) echo.HandlerFunc {
return func(c echo.Context) error {
req := c.Request().(*Request)
res := c.Response().(*Response)
h.ServeHTTP(res.adapter, req.Request)
return nil
}
}
// WrapMiddleware wraps `func(http.Handler) http.Handler` into `echo.MiddlewareFunc`
func WrapMiddleware(m func(http.Handler) http.Handler) echo.MiddlewareFunc {
return func(next echo.HandlerFunc) echo.HandlerFunc {
return func(c echo.Context) (err error) {
req := c.Request().(*Request)
res := c.Response().(*Response)
m(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
err = next(c)
})).ServeHTTP(res.adapter, req.Request)
return
}
}
}
// tcpKeepAliveListener sets TCP keep-alive timeouts on accepted
// connections. It's used by ListenAndServe and ListenAndServeTLS so
// dead TCP connections (e.g. closing laptop mid-download) eventually
// go away.
type tcpKeepAliveListener struct {
*net.TCPListener
}
func (ln tcpKeepAliveListener) Accept() (c net.Conn, err error) {
tc, err := ln.AcceptTCP()
if err != nil {
return
}
tc.SetKeepAlive(true)
tc.SetKeepAlivePeriod(3 * time.Minute)
return tc, nil
}