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server.go
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server.go
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package http
import (
"context"
"io/ioutil"
"net"
"net/http"
"net/url"
"time"
"github.com/baidu/openedge/logger"
"github.com/baidu/openedge/utils"
"github.com/creasty/defaults"
"github.com/gorilla/mux"
)
// Params http params
type Params = map[string]string
// Headers http headers
type Headers = http.Header
// Server http server
type Server struct {
cfg ServerInfo
svr *http.Server
uri *url.URL
addr string
auth func(u, p string) bool
router *mux.Router
log logger.Logger
}
// NewServer creates a new http server
func NewServer(c ServerInfo, a func(u, p string) bool) (*Server, error) {
defaults.Set(&c)
uri, err := utils.ParseURL(c.Address)
if err != nil {
return nil, err
}
tls, err := utils.NewTLSServerConfig(c.Certificate)
if err != nil {
return nil, err
}
router := mux.NewRouter()
return &Server{
cfg: c,
auth: a,
uri: uri,
router: router,
svr: &http.Server{
WriteTimeout: c.Timeout,
ReadTimeout: c.Timeout,
TLSConfig: tls,
Handler: router,
},
log: logger.WithField("api", "server"),
}, nil
}
// Handle handle requests
func (s *Server) Handle(handle func(Params, []byte) ([]byte, error), method, path string, params ...string) {
s.router.HandleFunc(path, func(res http.ResponseWriter, req *http.Request) {
s.log.Infof("[%s] %s", req.Method, req.URL.String())
if s.auth != nil {
if !s.auth(req.Header.Get(headerKeyUsername), req.Header.Get(headerKeyPassword)) {
http.Error(res, errAccountUnauthorized.Error(), 401)
s.log.Errorf("[%s] %s %s", req.Method, req.URL.String(), errAccountUnauthorized.Error())
return
}
}
var err error
var reqBody []byte
if req.Body != nil {
defer req.Body.Close()
reqBody, err = ioutil.ReadAll(req.Body)
if err != nil {
http.Error(res, err.Error(), 400)
s.log.Errorf("[%s] %s %s", req.Method, req.URL.String(), err.Error())
return
}
}
resBody, err := handle(mux.Vars(req), reqBody)
if err != nil {
http.Error(res, err.Error(), 400)
s.log.Errorf("[%s] %s %s", req.Method, req.URL.String(), err.Error())
return
}
if resBody != nil {
res.Write(resBody)
}
}).Methods(method).Queries(params...)
}
// Start starts server
func (s *Server) Start() error {
l, err := net.Listen(s.uri.Scheme, s.uri.Host)
if err != nil {
return err
}
if s.uri.Scheme == "tcp" {
l = tcpKeepAliveListener{l.(*net.TCPListener)}
}
s.addr = l.Addr().String()
go s.svr.Serve(l)
return nil
}
// Close closese server
func (s *Server) Close() error {
ctx, cancel := context.WithTimeout(context.Background(), s.svr.IdleTimeout)
defer cancel()
return s.svr.Shutdown(ctx)
}
// 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() (net.Conn, error) {
tc, err := ln.AcceptTCP()
if err != nil {
return nil, err
}
tc.SetKeepAlive(true)
tc.SetKeepAlivePeriod(3 * time.Minute)
return tc, nil
}