115 lines
3 KiB
Go
115 lines
3 KiB
Go
package cmd
|
|
|
|
import (
|
|
"errors"
|
|
"net"
|
|
"net/http"
|
|
|
|
wisski_distillery "github.com/FAU-CDI/wisski-distillery"
|
|
"github.com/FAU-CDI/wisski-distillery/internal/cli"
|
|
"github.com/rs/zerolog"
|
|
"github.com/tkw1536/goprogram/exit"
|
|
)
|
|
|
|
// Server is the 'server' command
|
|
var Server wisski_distillery.Command = server{}
|
|
|
|
type server struct {
|
|
Trigger bool `short:"t" long:"trigger" description:"instead of running on the existing server, simply trigger a cron run"`
|
|
Bind string `short:"b" long:"bind" description:"address to listen on" default:"127.0.0.1:8888"`
|
|
InternalBind string `short:"i" long:"internal-bind" description:"address to listen on for internal server" default:"127.0.0.1:9999"`
|
|
}
|
|
|
|
func (s server) Description() wisski_distillery.Description {
|
|
return wisski_distillery.Description{
|
|
Requirements: cli.Requirements{
|
|
NeedsDistillery: true,
|
|
},
|
|
Command: "server",
|
|
Description: "starts a server with information about this distillery",
|
|
}
|
|
}
|
|
|
|
var errServerListen = exit.Error{
|
|
ExitCode: exit.ExitGeneric,
|
|
Message: "unable to listen",
|
|
}
|
|
|
|
var errServerTrigger = exit.Error{
|
|
Message: "failed to trigger",
|
|
ExitCode: exit.ExitGeneric,
|
|
}
|
|
|
|
var errServerGeneric = exit.Error{
|
|
ExitCode: exit.ExitGeneric,
|
|
Message: "unable to instantiate server",
|
|
}
|
|
|
|
func (s server) Run(context wisski_distillery.Context) error {
|
|
dis := context.Environment
|
|
|
|
// if the caller requested a trigger, just trigger the cron tasks
|
|
if s.Trigger {
|
|
if err := dis.Control().Trigger(context.Context); err != nil {
|
|
return errServerTrigger.Wrap(err)
|
|
}
|
|
}
|
|
|
|
{
|
|
// create a channel for notifications
|
|
notify, cancel := dis.Cron().Listen(context.Context)
|
|
defer cancel()
|
|
|
|
// start the cron tasks
|
|
done := dis.Cron().Start(context.Context, notify)
|
|
defer func() {
|
|
<-done
|
|
}()
|
|
}
|
|
|
|
// and start the server
|
|
public, internal, err := dis.Control().Server(context.Context, context.Stderr)
|
|
if err != nil {
|
|
return errServerGeneric.Wrap(err)
|
|
}
|
|
|
|
// start the public listener
|
|
publicS := http.Server{Handler: public}
|
|
publicC := make(chan error)
|
|
{
|
|
zerolog.Ctx(context.Context).Info().Str("bind", s.Bind).Msg("listening public server")
|
|
publicL, err := net.Listen("tcp", s.Bind)
|
|
if err != nil {
|
|
return errServerListen.Wrap(err)
|
|
}
|
|
defer publicS.Shutdown(context.Context)
|
|
go func() {
|
|
publicC <- publicS.Serve(publicL)
|
|
}()
|
|
}
|
|
|
|
// start the internal listener
|
|
internalS := http.Server{Handler: internal}
|
|
internalC := make(chan error)
|
|
{
|
|
zerolog.Ctx(context.Context).Info().Str("bind", s.InternalBind).Msg("listening internal server")
|
|
internalL, err := net.Listen("tcp", s.InternalBind)
|
|
if err != nil {
|
|
return errServerListen.Wrap(err)
|
|
}
|
|
defer internalS.Shutdown(context.Context)
|
|
go func() {
|
|
internalC <- internalS.Serve(internalL)
|
|
}()
|
|
}
|
|
|
|
go func() {
|
|
<-context.Context.Done()
|
|
|
|
zerolog.Ctx(context.Context).Info().Msg("shutting down server")
|
|
publicS.Shutdown(context.Context)
|
|
internalS.Shutdown(context.Context)
|
|
}()
|
|
|
|
return errServerListen.Wrap(errors.Join(<-internalC, <-publicC, err))
|
|
}
|