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package http
import (
"net/http"
"github.com/spiral/roadrunner/service"
"context"
"github.com/spiral/roadrunner"
)
// Name contains default service name.
const Name = "http"
type Middleware interface {
// Handle must return true if request/response pair is handled withing the middleware.
Handle(w http.ResponseWriter, r *http.Request) bool
}
// Service manages rr, http servers.
type Service struct {
middleware []Middleware
cfg *Config
rr *roadrunner.Server
handler *Handler
http *http.Server
}
func (s *Service) Add(m Middleware) {
s.middleware = append(s.middleware, m)
}
// Configure must return configure service and return true if service hasStatus enabled. Must return error in case of
// misconfiguration. Services must not be used without proper configuration pushed first.
func (s *Service) Configure(cfg service.Config, c service.Container) (bool, error) {
config := &Config{}
if err := cfg.Unmarshal(config); err != nil {
return false, err
}
if !config.Enable {
return false, nil
}
if err := config.Valid(); err != nil {
return false, err
}
s.cfg = config
return true, nil
}
// Serve serves the service.
func (s *Service) Serve() error {
rr := roadrunner.NewServer(s.cfg.Workers)
if err := rr.Start(); err != nil {
return err
}
defer s.rr.Stop()
// todo: observer
s.rr = rr
s.handler = &Handler{cfg: s.cfg, rr: s.rr}
s.http = &http.Server{Addr: s.cfg.httpAddr(), Handler: s}
if err := s.http.ListenAndServe(); err != nil {
return err
}
return nil
}
// Stop stops the service.
func (s *Service) Stop() {
s.http.Shutdown(context.Background())
}
// Handle handles connection using set of middleware and rr PSR-7 server.
func (s *Service) ServeHTTP(w http.ResponseWriter, r *http.Request) {
for _, m := range s.middleware {
if m.Handle(w, r) {
return
}
}
s.handler.Handle(w, r)
}
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