cri-o/cmd/kpod/main.go

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package main
import (
"os"
"github.com/containers/storage/pkg/reexec"
"github.com/sirupsen/logrus"
"github.com/urfave/cli"
)
//Version of kpod
const Version string = "0.0.1"
func main() {
if reexec.Init() {
return
}
app := cli.NewApp()
app.Name = "kpod"
app.Usage = "manage pods and images"
app.Version = Version
app.Commands = []cli.Command{
diffCommand,
exportCommand,
historyCommand,
imagesCommand,
kpod: info subcommand Design: The output of the `info` subcommand ought to be directly consumable in a format like JSON or yaml. The structure being a map of sorts. Each subsection of information being an individual cluster under the top-level, like platform info, debug, storage, etc. Even if there are errors under the top level key, the value will be a map with the key of "error" and the value as the message of the `err.Error()`. In this way, the command always returns usable output. Ideally there will be a means for anything that can register info to do so independently from it being in the single info.go, so this approach is having a typed signature for the function that gives info, but i'm sure it could be better. Current iteration of this outputs the following as a limited user: ```yaml host: MemFree: 711307264 MemTotal: 2096222208 SwapFree: 2147479552 SwapTotal: 2147479552 arch: amd64 cpus: 1 os: linux store: error: 'mkdir /var/run/containers/storage: permission denied' ``` and as root (`sudo kpod info -D`): ```yaml debug: compiler: gc go version: go1.7.6 goroutines: 3 host: MemFree: 717795328 MemTotal: 2096222208 SwapFree: 2147479552 SwapTotal: 2147479552 arch: amd64 cpus: 1 os: linux store: ContainerStore: number: 1 GraphDriverName: overlay2 GraphRoot: /var/lib/containers/storage ImageStore: number: 1 ``` And with the `--json --debug` flag: ```json { "debug": { "compiler": "gc", "go version": "go1.7.6", "goroutines": 3 }, "host": { "MemFree": 709402624, "MemTotal": 2096222208, "SwapFree": 2147479552, "SwapTotal": 2147479552, "arch": "amd64", "cpus": 1, "os": "linux" }, "store": { "ContainerStore": { "number": 1 }, "GraphDriverName": "overlay2", "GraphRoot": "/var/lib/containers/storage", "ImageStore": { "number": 1 } } } ``` Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
2017-07-13 13:11:36 +00:00
infoCommand,
inspectCommand,
mountCommand,
pullCommand,
pushCommand,
rmiCommand,
tagCommand,
umountCommand,
versionCommand,
saveCommand,
loadCommand,
}
app.Flags = []cli.Flag{
cli.StringFlag{
Name: "root",
Usage: "path to the root directory in which data, including images, is stored",
},
cli.StringFlag{
Name: "runroot",
Usage: "path to the 'run directory' where all state information is stored",
},
cli.StringFlag{
Name: "storage-driver, s",
Usage: "select which storage driver is used to manage storage of images and containers (default is overlay2)",
},
cli.StringSliceFlag{
Name: "storage-opt",
Usage: "used to pass an option to the storage driver",
},
cli.StringFlag{
Name: "config, c",
Usage: "path of a config file detailing container server configuration options",
},
}
if err := app.Run(os.Args); err != nil {
logrus.Fatal(err)
}
}