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Refactor toolking to setup and cleanup configs

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Signed-off-by: Evan Lezar <elezar@nvidia.com>
This commit is contained in:
Evan Lezar
2023-06-09 17:17:54 +02:00
parent b9b19494d0
commit 56c533d7d4
7 changed files with 276 additions and 367 deletions
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119
tools/container/docker/docker.go
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@@ -23,9 +23,8 @@ import (
"syscall"
"time"
"github.com/NVIDIA/nvidia-container-toolkit/internal/config/engine"
"github.com/NVIDIA/nvidia-container-toolkit/internal/config/engine/docker"
"github.com/NVIDIA/nvidia-container-toolkit/tools/container/operator"
"github.com/NVIDIA/nvidia-container-toolkit/tools/container"
log "github.com/sirupsen/logrus"
cli "github.com/urfave/cli/v2"
)
@@ -56,13 +55,7 @@ const (
// options stores the configuration from the command line or environment variables
type options struct {
config string
socket string
runtimeName string
runtimeDir string
setAsDefault bool
restartMode string
hostRootMount string
container.Options
}
func main() {
@@ -83,7 +76,7 @@ func main() {
return Setup(c, &options)
}
setup.Before = func(c *cli.Context) error {
return ParseArgs(c, &options)
return container.ParseArgs(c, &options.Options)
}
// Create the 'cleanup' subcommand
@@ -95,7 +88,7 @@ func main() {
return Cleanup(c, &options)
}
cleanup.Before = func(c *cli.Context) error {
return ParseArgs(c, &options)
return container.ParseArgs(c, &options.Options)
}
// Register the subcommands with the top-level CLI
@@ -113,28 +106,28 @@ func main() {
Name: "config",
Usage: "Path to docker config file",
Value: defaultConfig,
Destination: &options.config,
Destination: &options.Config,
EnvVars: []string{"DOCKER_CONFIG", "RUNTIME_CONFIG"},
},
&cli.StringFlag{
Name: "socket",
Usage: "Path to the docker socket file",
Value: defaultSocket,
Destination: &options.socket,
Destination: &options.Socket,
EnvVars: []string{"DOCKER_SOCKET", "RUNTIME_SOCKET"},
},
&cli.StringFlag{
Name: "restart-mode",
Usage: "Specify how docker should be restarted; If 'none' is selected it will not be restarted [signal | none]",
Value: defaultRestartMode,
Destination: &options.restartMode,
Destination: &options.RestartMode,
EnvVars: []string{"DOCKER_RESTART_MODE", "RUNTIME_RESTART_MODE"},
},
&cli.StringFlag{
Name: "host-root",
Usage: "Specify the path to the host root to be used when restarting docker using systemd",
Value: defaultHostRootMount,
Destination: &options.hostRootMount,
Destination: &options.HostRootMount,
EnvVars: []string{"HOST_ROOT_MOUNT"},
// Restart using systemd is currently not supported.
// We hide this option for the time being.
@@ -145,21 +138,21 @@ func main() {
Aliases: []string{"runtime-class", "nvidia-runtime-name"},
Usage: "Specify the name of the `nvidia` runtime. If set-as-default is selected, the runtime is used as the default runtime.",
Value: defaultRuntimeName,
Destination: &options.runtimeName,
Destination: &options.RuntimeName,
EnvVars: []string{"DOCKER_RUNTIME_NAME", "NVIDIA_RUNTIME_NAME"},
},
&cli.StringFlag{
Name: "nvidia-runtime-dir",
Aliases: []string{"runtime-dir"},
Usage: "The path where the nvidia-container-runtime binaries are located. If this is not specified, the first argument will be used instead",
Destination: &options.runtimeDir,
Destination: &options.RuntimeDir,
EnvVars: []string{"NVIDIA_RUNTIME_DIR"},
},
&cli.BoolFlag{
Name: "set-as-default",
Usage: "Set the `nvidia` runtime as the default runtime. If --runtime-name is specified as `nvidia-experimental` the experimental runtime is set as the default runtime instead",
Value: defaultSetAsDefault,
Destination: &options.setAsDefault,
Destination: &options.SetAsDefault,
EnvVars: []string{"DOCKER_SET_AS_DEFAULT", "NVIDIA_RUNTIME_SET_AS_DEFAULT"},
Hidden: true,
},
@@ -181,21 +174,15 @@ func Setup(c *cli.Context, o *options) error {
log.Infof("Starting 'setup' for %v", c.App.Name)
cfg, err := docker.New(
docker.WithPath(o.config),
docker.WithPath(o.Config),
)
if err != nil {
return fmt.Errorf("unable to load config: %v", err)
}
err = UpdateConfig(cfg, o)
err = o.Configure(cfg)
if err != nil {
return fmt.Errorf("unable to update config: %v", err)
}
log.Infof("Flushing docker config to %v", o.config)
_, err = cfg.Save(o.config)
if err != nil {
return fmt.Errorf("unable to flush config: %v", err)
return fmt.Errorf("unable to configure docker: %v", err)
}
err = RestartDocker(o)
@@ -213,24 +200,15 @@ func Cleanup(c *cli.Context, o *options) error {
log.Infof("Starting 'cleanup' for %v", c.App.Name)
cfg, err := docker.New(
docker.WithPath(o.config),
docker.WithPath(o.Config),
)
if err != nil {
return fmt.Errorf("unable to load config: %v", err)
}
err = RevertConfig(cfg, o)
err = o.Unconfigure(cfg)
if err != nil {
return fmt.Errorf("unable to update config: %v", err)
}
log.Infof("Flushing docker config to %v", o.config)
n, err := cfg.Save(o.config)
if err != nil {
return fmt.Errorf("unable to flush config: %v", err)
}
if n == 0 {
log.Infof("Config file is empty, removed")
return fmt.Errorf("unable to unconfigure docker: %v", err)
}
err = RestartDocker(o)
@@ -243,73 +221,18 @@ func Cleanup(c *cli.Context, o *options) error {
return nil
}
// ParseArgs parses the command line arguments to the CLI
func ParseArgs(c *cli.Context, o *options) error {
if o.runtimeDir != "" {
log.Debug("Runtime directory already set")
return nil
}
args := c.Args()
log.Infof("Parsing arguments: %v", args.Slice())
if c.NArg() != 1 {
return fmt.Errorf("incorrect number of arguments")
}
o.runtimeDir = args.Get(0)
log.Infof("Successfully parsed arguments")
return nil
}
// UpdateConfig updates the docker config to include the nvidia runtimes
func UpdateConfig(cfg engine.Interface, o *options) error {
runtimes := operator.GetRuntimes(
operator.WithNvidiaRuntimeName(o.runtimeName),
operator.WithSetAsDefault(o.setAsDefault),
operator.WithRoot(o.runtimeDir),
)
for name, runtime := range runtimes {
err := cfg.AddRuntime(name, runtime.Path, runtime.SetAsDefault)
if err != nil {
return fmt.Errorf("failed to update runtime %q: %v", name, err)
}
}
return nil
}
// RevertConfig reverts the docker config to remove the nvidia runtime
func RevertConfig(cfg engine.Interface, o *options) error {
runtimes := operator.GetRuntimes(
operator.WithNvidiaRuntimeName(o.runtimeName),
operator.WithSetAsDefault(o.setAsDefault),
operator.WithRoot(o.runtimeDir),
)
for name := range runtimes {
err := cfg.RemoveRuntime(name)
if err != nil {
return fmt.Errorf("failed to remove runtime %q: %v", name, err)
}
}
return nil
}
// RestartDocker restarts docker depending on the value of restartModeFlag
func RestartDocker(o *options) error {
switch o.restartMode {
switch o.RestartMode {
case restartModeNone:
log.Warnf("Skipping sending signal to docker due to --restart-mode=%v", o.restartMode)
log.Warnf("Skipping sending signal to docker due to --restart-mode=%v", o.RestartMode)
case restartModeSignal:
err := SignalDocker(o.socket)
err := SignalDocker(o.Socket)
if err != nil {
return fmt.Errorf("unable to signal docker: %v", err)
}
default:
return fmt.Errorf("invalid restart mode specified: %v", o.restartMode)
return fmt.Errorf("invalid restart mode specified: %v", o.RestartMode)
}
return nil