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serve.go
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serve.go
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package services
import (
"os"
"os/signal"
"syscall"
"github.com/pkg/errors"
log "github.com/sirupsen/logrus"
)
// Serve serves multible Servables at ones, handles errors and system signals
type Serve struct {
servables []Servable
}
// Servable serves something
type Servable interface {
Serve() error
}
// NewServe initializes Serve
func NewServe(s ...Servable) *Serve {
return &Serve{servables: s}
}
// Serve serves multible Servables
func (s *Serve) Serve() error {
serveError := make(chan error, 1)
for _, ss := range s.servables {
if ss == nil {
continue
}
go func(sss Servable) {
err := sss.Serve()
serveError <- err
}(ss)
}
sigs := make(chan os.Signal, 1)
signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
select {
case sig := <-sigs:
log.WithField("signal", sig).Info("got syscall")
case err := <-serveError:
if err != nil {
return errors.Wrap(err, "got serve error")
}
}
log.Info("shutting down... at last!")
return nil
}