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package http
import (
"context"
"fmt"
"github.com/spiral/roadrunner"
"github.com/spiral/roadrunner/service/env"
"github.com/spiral/roadrunner/service/http/attributes"
"github.com/spiral/roadrunner/service/rpc"
"github.com/spiral/roadrunner/util"
"golang.org/x/net/http2"
"net/http"
"net/url"
"strings"
"sync"
"time"
)
const (
// ID contains default svc name.
ID = "http"
// EventInitSSL thrown at moment of https initialization. SSL server passed as context.
EventInitSSL = 750
)
// http middleware type.
type middleware func(f http.HandlerFunc) http.HandlerFunc
// Service manages rr, http servers.
type Service struct {
cfg *Config
env env.Environment
lsns []func(event int, ctx interface{})
mdwr []middleware
mu sync.Mutex
rr *roadrunner.Server
handler *Handler
http *http.Server
https *http.Server
}
// AddMiddleware adds new net/http mdwr.
func (s *Service) AddMiddleware(m middleware) {
s.mdwr = append(s.mdwr, m)
}
// AddListener attaches server event watcher.
func (s *Service) AddListener(l func(event int, ctx interface{})) {
s.lsns = append(s.lsns, l)
}
// Init must return configure svc and return true if svc hasStatus enabled. Must return error in case of
// misconfiguration. Services must not be used without proper configuration pushed first.
func (s *Service) Init(cfg *Config, r *rpc.Service, e env.Environment) (bool, error) {
s.cfg = cfg
s.env = e
if r != nil {
if err := r.Register(ID, &rpcServer{s}); err != nil {
return false, err
}
}
return true, nil
}
// Serve serves the svc.
func (s *Service) Serve() error {
s.mu.Lock()
if s.env != nil {
if err := s.env.Copy(s.cfg.Workers); err != nil {
return nil
}
}
s.cfg.Workers.SetEnv("RR_HTTP", "true")
s.rr = roadrunner.NewServer(s.cfg.Workers)
s.rr.Listen(s.throw)
s.handler = &Handler{ft: util.NewFastTime(time.Microsecond), cfg: s.cfg, rr: s.rr}
s.handler.Listen(s.throw)
defer s.handler.ft.Stop()
s.http = &http.Server{Addr: s.cfg.Address, Handler: s}
if s.cfg.EnableTLS() {
s.https = s.initSSL()
}
s.mu.Unlock()
if err := s.rr.Start(); err != nil {
return err
}
defer s.rr.Stop()
err := make(chan error, 2)
go func() { err <- s.http.ListenAndServe() }()
if s.https != nil {
go func() { err <- s.https.ListenAndServeTLS(s.cfg.SSL.Cert, s.cfg.SSL.Key) }()
}
return <-err
}
// Stop stops the svc.
func (s *Service) Stop() {
s.mu.Lock()
defer s.mu.Unlock()
if s.http == nil {
return
}
if s.https != nil {
go s.https.Shutdown(context.Background())
}
go s.http.Shutdown(context.Background())
}
// ServeHTTP handles connection using set of middleware and rr PSR-7 server.
func (s *Service) ServeHTTP(w http.ResponseWriter, r *http.Request) {
if s.https != nil && r.TLS == nil && s.cfg.SSL.Redirect {
target := &url.URL{
Scheme: "https",
Host: s.tlsAddr(r.Host, false),
Path: r.URL.Path,
RawQuery: r.URL.RawQuery,
}
http.Redirect(w, r, target.String(), http.StatusTemporaryRedirect)
return
}
r = attributes.Init(r)
// chaining middleware
f := s.handler.ServeHTTP
for _, m := range s.mdwr {
f = m(f)
}
f(w, r)
}
// Init https server.
func (s *Service) initSSL() *http.Server {
server := &http.Server{Addr: s.tlsAddr(s.cfg.Address, true), Handler: s}
s.throw(EventInitSSL, server)
// Enable HTTP/2 support by default
http2.ConfigureServer(server, &http2.Server{})
return server
}
// throw handles service, server and pool events.
func (s *Service) throw(event int, ctx interface{}) {
for _, l := range s.lsns {
l(event, ctx)
}
if event == roadrunner.EventServerFailure {
// underlying rr server is dead
s.Stop()
}
}
// tlsAddr replaces listen or host port with port configured by SSL config.
func (s *Service) tlsAddr(host string, forcePort bool) string {
// remove current forcePort first
host = strings.Split(host, ":")[0]
if forcePort || s.cfg.SSL.Port != 443 {
host = fmt.Sprintf("%s:%v", host, s.cfg.SSL.Port)
}
return host
}
|
