91 lines
2.3 KiB
Go
91 lines
2.3 KiB
Go
package cmd
|
|
|
|
import (
|
|
"net/http"
|
|
"time"
|
|
|
|
wisski_distillery "github.com/FAU-CDI/wisski-distillery"
|
|
"github.com/FAU-CDI/wisski-distillery/internal/cli"
|
|
"github.com/FAU-CDI/wisski-distillery/pkg/cancel"
|
|
"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"`
|
|
Prefix string `short:"p" long:"prefix" description:"prefix to listen under"`
|
|
Bind string `short:"b" long:"bind" description:"address to listen on" default:"127.0.0.1:8888"`
|
|
}
|
|
|
|
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",
|
|
}
|
|
|
|
func (s server) Run(context wisski_distillery.Context) error {
|
|
dis := context.Environment
|
|
|
|
if s.Trigger {
|
|
context.Println("Triggering Cron Tasks")
|
|
return dis.Control().Trigger(context.Context, context.Environment.Environment)
|
|
}
|
|
|
|
// start the cron tasks
|
|
{
|
|
// create a channel for notifications
|
|
notify, cancel := dis.Cron().Listen(context.Context)
|
|
defer cancel()
|
|
|
|
// start the cron tasks
|
|
context.Printf("Starting cron tasks %s\n", s.Bind)
|
|
done := dis.Cron().Start(context.Context, time.Minute, notify)
|
|
defer func() {
|
|
<-done
|
|
}()
|
|
}
|
|
|
|
handler, err := dis.Control().Server(context.Context, context.Stderr)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
context.Printf("Listening on %s\n", s.Bind)
|
|
|
|
// make a new listener
|
|
listener, err := dis.Still.Environment.Listen("tcp", s.Bind)
|
|
if err != nil {
|
|
return errServerListen.Wrap(err)
|
|
}
|
|
|
|
go func() {
|
|
<-context.Context.Done()
|
|
listener.Close()
|
|
}()
|
|
|
|
server := http.Server{
|
|
Handler: http.StripPrefix(s.Prefix, handler),
|
|
}
|
|
|
|
err, _ = cancel.WithContext(context.Context, func(start func()) error {
|
|
start()
|
|
return server.Serve(listener)
|
|
}, func() {
|
|
zerolog.Ctx(context.Context).Info().Msg("shutting down server")
|
|
server.Shutdown(context.Context)
|
|
})
|
|
|
|
return errServerListen.Wrap(err)
|
|
}
|