70 lines
1.5 KiB
Go
70 lines
1.5 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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log "github.com/Sirupsen/logrus"
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"os"
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"github.com/codegangsta/cli"
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"github.com/docker/libcontainer"
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"github.com/docker/libcontainer/cgroups/systemd"
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"github.com/docker/libcontainer/configs"
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)
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func loadConfig(context *cli.Context) (*configs.Config, error) {
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if path := context.String("config"); path != "" {
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f, err := os.Open(path)
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if err != nil {
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return nil, err
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}
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defer f.Close()
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var config *configs.Config
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if err := json.NewDecoder(f).Decode(&config); err != nil {
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return nil, err
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}
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return config, nil
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}
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config := getTemplate()
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modify(config, context)
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return config, nil
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}
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func loadFactory(context *cli.Context) (libcontainer.Factory, error) {
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cgm := libcontainer.Cgroupfs
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if context.Bool("systemd") {
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if systemd.UseSystemd() {
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cgm = libcontainer.SystemdCgroups
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} else {
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log.Warn("systemd cgroup flag passed, but systemd support for managing cgroups is not available.")
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}
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}
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return libcontainer.New(context.GlobalString("root"), cgm)
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}
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func getContainer(context *cli.Context) (libcontainer.Container, error) {
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factory, err := loadFactory(context)
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if err != nil {
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return nil, err
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}
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container, err := factory.Load(context.String("id"))
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if err != nil {
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return nil, err
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}
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return container, nil
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}
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func fatal(err error) {
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if lerr, ok := err.(libcontainer.Error); ok {
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lerr.Detail(os.Stderr)
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os.Exit(1)
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}
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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func fatalf(t string, v ...interface{}) {
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fmt.Fprintf(os.Stderr, t, v...)
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os.Exit(1)
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}
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