domain/web/server/server.go (view raw)
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import (
"context"
"errors"
"fmt"
"net"
"net/http"
"time"
"alin.ovh/x/log"
"github.com/osdevisnot/sorvor/pkg/livereload"
"github.com/Southclaws/fault"
"github.com/Southclaws/fault/fmsg"
)
type Options struct {
Redirect bool `conf:"default:true"`
ListenAddress string `conf:"default:::"`
Port int `conf:"default:8080,short:p"`
ShutdownTimeout time.Duration `conf:"default:10s"`
Development bool `conf:"-"`
LiveReload *livereload.LiveReload `conf:"-"`
Domains []string `conf:"-"`
WildcardDomains []string `conf:"-"`
Listener net.Listener `conf:"-"`
}
type Server struct {
mux *http.ServeMux
options *Options
log *log.Logger
server *http.Server
}
var (
CommitSHA = "local"
ShortSHA = "local"
serverHeader = fmt.Sprintf("homestead (%s)", ShortSHA)
ReadHeaderTimeout = 10 * time.Second
ReadTimeout = 1 * time.Minute
WriteTimeout = 2 * time.Minute
IdleTimeout = 10 * time.Minute
)
func serverHeaderHandler(wrappedHandler http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Server", serverHeader)
wrappedHandler.ServeHTTP(w, r)
})
}
func New(options *Options, log *log.Logger) (*Server, error) {
return &Server{
mux: http.NewServeMux(),
log: log,
options: options,
}, nil
}
func (s *Server) HostApp(app *App) error {
if app.Domain == "" {
return fault.New("app needs a domain")
}
s.options.Domains = append(s.options.Domains, app.Domain)
s.mux.Handle(app.Domain+"/", app.Handler)
return nil
}
func (s *Server) HostFallbackApp(app *App) {
if len(app.Domains) > 0 {
s.options.Domains = append(s.options.Domains, app.Domains...)
}
if app.WildcardDomain != "" {
s.options.WildcardDomains = append(s.options.WildcardDomains, app.WildcardDomain)
}
s.mux.Handle("/", app.Handler)
}
func (s *Server) Start() error {
var lh http.Handler
if s.options.Development {
lh = wrapHandlerWithLogging(s.mux, s.log)
} else {
lh = s.mux
}
top := http.NewServeMux()
top.Handle("/",
serverHeaderHandler(
lh,
),
)
if s.options.LiveReload != nil {
top.Handle("/_/reload", s.options.LiveReload)
s.options.LiveReload.Start()
}
top.HandleFunc("/health", func(w http.ResponseWriter, _ *http.Request) {
w.WriteHeader(http.StatusNoContent)
})
s.server = &http.Server{
ReadHeaderTimeout: ReadHeaderTimeout,
ReadTimeout: ReadTimeout,
WriteTimeout: WriteTimeout,
IdleTimeout: IdleTimeout,
Handler: top,
}
if s.options.Listener == nil {
var err error
s.options.Listener, err = s.tcpListener()
if err != nil {
return fault.Wrap(err, fmsg.With("error creating listener"))
}
}
if err := s.server.Serve(s.options.Listener); !errors.Is(err, http.ErrServerClosed) {
return fault.Wrap(err, fmsg.With("error creating/closing server"))
}
return nil
}
func (s *Server) Stop() chan struct{} {
s.log.Debug("stop called")
idleConnsClosed := make(chan struct{})
go func() {
s.log.Debug("shutting down server")
ctx, cancel := context.WithTimeout(context.Background(), s.options.ShutdownTimeout)
defer cancel()
err := s.server.Shutdown(ctx)
s.log.Debug("server shut down")
if err != nil {
// Error from closing listeners, or context timeout:
s.log.Warn("HTTP server Shutdown", "error", err)
}
close(idleConnsClosed)
}()
return idleConnsClosed
}
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