internal/server/server.go (view raw)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 | package server
import (
"context"
"fmt"
"net/http"
"time"
"go.alanpearce.eu/x/log"
"gitlab.com/tozd/go/errors"
)
var (
CommitSHA = "local"
ShortSHA = "local"
serverHeader = fmt.Sprintf("website (%s)", ShortSHA)
ReadHeaderTimeout = 10 * time.Second
ReadTimeout = 1 * time.Minute
WriteTimeout = 2 * time.Minute
IdleTimeout = 10 * time.Minute
)
type Options struct {
ListenAddress string `conf:"default:localhost"`
Port int `conf:"default:8080,short:p"`
TLS bool `conf:"default:false"`
TLSPort int `conf:"default:8443"`
ACMEIssuer string
ACMEIssuerCert string
Domains []string `conf:"-"`
WildcardDomains []string `conf:"-"`
}
type Server struct {
mux *http.ServeMux
options *Options
log *log.Logger
server *http.Server
}
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) {
fixupMIMETypes(log)
return &Server{
mux: http.NewServeMux(),
log: log,
options: options,
}, nil
}
func (s *Server) HostApp(app *App) error {
if app.Domain == "" {
return errors.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) serve(tls bool) error {
if tls {
return s.serveTLS()
}
return s.serveTCP()
}
func (s *Server) Start() error {
top := http.NewServeMux()
top.Handle("/",
serverHeaderHandler(
wrapHandlerWithLogging(s.mux, s.log),
),
)
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 err := s.serve(s.options.TLS); err != http.ErrServerClosed {
return errors.WithMessage(err, "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(), 10*time.Second)
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
}
|