containerized-data-importer/pkg/importer/util.go
Eng Zer Jun aaacbae797
refactor: move from io/ioutil to io and os packages (#2484)
The io/ioutil package has been deprecated as of Go 1.16 [1]. This commit
replaces the existing io/ioutil functions with their new definitions in
io and os packages.

[1]: https://golang.org/doc/go1.16#ioutil
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
2022-12-05 19:19:13 +00:00

57 lines
1.6 KiB
Go

package importer
import (
"net/url"
"os"
"os/signal"
"path/filepath"
"syscall"
"github.com/pkg/errors"
"k8s.io/klog/v2"
"kubevirt.io/containerized-data-importer/pkg/common"
"kubevirt.io/containerized-data-importer/pkg/util"
)
// ParseEndpoint parses the required endpoint and return the url struct.
func ParseEndpoint(endpt string) (*url.URL, error) {
if endpt == "" {
// Because we are passing false, we won't decode anything and there is no way to error.
endpt, _ = util.ParseEnvVar(common.ImporterEndpoint, false)
if endpt == "" {
return nil, errors.Errorf("endpoint %q is missing or blank", common.ImporterEndpoint)
}
}
return url.Parse(endpt)
}
// CleanDir cleans the contents of a directory including its sub directories, but does NOT remove the
// directory itself.
func CleanDir(dest string) error {
dir, err := os.ReadDir(dest)
if err != nil {
klog.Errorf("Unable read directory to clean: %s, %v", dest, err)
return err
}
for _, d := range dir {
klog.V(1).Infoln("deleting file: " + filepath.Join(dest, d.Name()))
err = os.RemoveAll(filepath.Join(dest, d.Name()))
if err != nil {
klog.Errorf("Unable to delete file: %s, %v", filepath.Join(dest, d.Name()), err)
return err
}
}
return nil
}
// GetTerminationChannel returns a channel that listens for SIGTERM
func GetTerminationChannel() <-chan os.Signal {
terminationChannel := make(chan os.Signal, 1)
signal.Notify(terminationChannel, os.Interrupt, syscall.SIGTERM)
return terminationChannel
}
// newTerminationChannel should be overriden for unit tests
var newTerminationChannel = GetTerminationChannel