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utils.go
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/
utils.go
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package startup_base
import (
"fmt"
"io"
"os"
"github.com/sirupsen/logrus"
)
var log = logrus.WithField("prefix", "startup-base")
func FatalOnError(err error, reason string, args ...interface{}) {
if err != nil {
log.Fatalf("%s: %s", fmt.Sprintf(reason, args...), err)
return
}
}
func OpenWriter(name string) (*os.File, error) {
switch name {
case "", "/dev/stderr":
return os.Stderr, nil
case "/dev/stdout", "-":
return os.Stdout, nil
case "/dev/null":
return nil, nil
default:
// some output file
return os.Create(name)
}
}
type StartupError error
func Errorf(msg string, args ...interface{}) error {
return StartupError(fmt.Errorf(msg, args...))
}
func Panicf(msg string, args ...interface{}) {
panic(Errorf(msg, args...))
}
func PanicOnError(err error, msg string, args ...interface{}) {
if err != nil {
panic(Errorf("%s: %s", err, fmt.Sprintf(msg, args...)))
}
}
func Close(closer io.Closer, onErrorMessage string) {
if err := closer.Close(); err != nil {
log.WithError(err).Warn(onErrorMessage)
}
}