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|
// +build varlink
package main
import (
"time"
"github.com/containers/libpod/cmd/podman/libpodruntime"
iopodman "github.com/containers/libpod/cmd/podman/varlink"
"github.com/containers/libpod/pkg/varlinkapi"
"github.com/containers/libpod/version"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/urfave/cli"
"github.com/varlink/go/varlink"
)
var (
varlinkDescription = `
podman varlink
run varlink interface
`
varlinkFlags = []cli.Flag{
cli.IntFlag{
Name: "timeout, t",
Usage: "time until the varlink session expires in milliseconds. Use 0 to disable the timeout.",
Value: 1000,
},
}
varlinkCommand = &cli.Command{
Name: "varlink",
Usage: "Run varlink interface",
Description: varlinkDescription,
Flags: varlinkFlags,
Action: varlinkCmd,
ArgsUsage: "VARLINK_URI",
OnUsageError: usageErrorHandler,
}
)
func varlinkCmd(c *cli.Context) error {
args := c.Args()
if len(args) < 1 {
return errors.Errorf("you must provide a varlink URI")
}
timeout := time.Duration(c.Int64("timeout")) * time.Millisecond
// Create a single runtime for varlink
runtime, err := libpodruntime.GetRuntime(c)
if err != nil {
return errors.Wrapf(err, "error creating libpod runtime")
}
defer runtime.Shutdown(false)
var varlinkInterfaces = []*iopodman.VarlinkInterface{varlinkapi.New(c, runtime)}
// Register varlink service. The metadata can be retrieved with:
// $ varlink info [varlink address URI]
service, err := varlink.NewService(
"Atomic",
"podman",
version.Version,
"https://github.com/containers/libpod",
)
if err != nil {
return errors.Wrapf(err, "unable to create new varlink service")
}
for _, i := range varlinkInterfaces {
if err := service.RegisterInterface(i); err != nil {
return errors.Errorf("unable to register varlink interface %v", i)
}
}
// Run the varlink server at the given address
if err = service.Listen(args[0], timeout); err != nil {
switch err.(type) {
case varlink.ServiceTimeoutError:
logrus.Infof("varlink service expired (use --timeout to increase session time beyond %d ms, 0 means never timeout)", c.Int64("timeout"))
return nil
default:
return errors.Errorf("unable to start varlink service")
}
}
return nil
}
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