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main.go
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main.go
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package main
import (
"fmt"
"io/ioutil"
"log"
"os"
"github.com/containerd/containerd/cmd/ctr/commands/containers"
"github.com/containerd/containerd/cmd/ctr/commands/content"
"github.com/containerd/containerd/cmd/ctr/commands/events"
"github.com/containerd/containerd/cmd/ctr/commands/images"
namespacesCmd "github.com/containerd/containerd/cmd/ctr/commands/namespaces"
"github.com/containerd/containerd/cmd/ctr/commands/plugins"
"github.com/containerd/containerd/cmd/ctr/commands/pprof"
"github.com/containerd/containerd/cmd/ctr/commands/run"
"github.com/containerd/containerd/cmd/ctr/commands/snapshots"
"github.com/containerd/containerd/cmd/ctr/commands/tasks"
versionCmd "github.com/containerd/containerd/cmd/ctr/commands/version"
"github.com/containerd/containerd/defaults"
"github.com/containerd/containerd/namespaces"
"github.com/containerd/containerd/version"
"github.com/sirupsen/logrus"
"github.com/urfave/cli"
"google.golang.org/grpc/grpclog"
)
var extraCmds = []cli.Command{}
func init() {
// Discard grpc logs so that they don't mess with our stdio
grpclog.SetLogger(log.New(ioutil.Discard, "", log.LstdFlags))
cli.VersionPrinter = func(c *cli.Context) {
fmt.Println(c.App.Name, version.Package, c.App.Version)
}
}
func main() {
app := cli.NewApp()
app.Name = "ctr"
app.Version = version.Version
app.Usage = `
__
_____/ /______
/ ___/ __/ ___/
/ /__/ /_/ /
\___/\__/_/
containerd CLI
`
app.Flags = []cli.Flag{
cli.BoolFlag{
Name: "debug",
Usage: "enable debug output in logs",
},
cli.StringFlag{
Name: "address, a",
Usage: "address for containerd's GRPC server",
Value: defaults.DefaultAddress,
},
cli.DurationFlag{
Name: "timeout",
Usage: "total timeout for ctr commands",
},
cli.DurationFlag{
Name: "connect-timeout",
Usage: "timeout for connecting to containerd",
},
cli.StringFlag{
Name: "namespace, n",
Usage: "namespace to use with commands",
Value: namespaces.Default,
EnvVar: namespaces.NamespaceEnvVar,
},
}
app.Commands = append([]cli.Command{
plugins.Command,
versionCmd.Command,
containers.Command,
content.Command,
events.Command,
images.Command,
namespacesCmd.Command,
pprof.Command,
run.Command,
snapshots.Command,
tasks.Command,
}, extraCmds...)
app.Before = func(context *cli.Context) error {
if context.GlobalBool("debug") {
logrus.SetLevel(logrus.DebugLevel)
}
return nil
}
if err := app.Run(os.Args); err != nil {
fmt.Fprintf(os.Stderr, "ctr: %s\n", err)
os.Exit(1)
}
}