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|
package main
import (
"context"
"fmt"
"log/syslog"
"os"
"path"
"runtime/pprof"
"github.com/containers/libpod/cmd/podmanV2/registry"
"github.com/containers/libpod/pkg/domain/entities"
"github.com/containers/libpod/pkg/rootless"
"github.com/containers/libpod/pkg/tracing"
"github.com/containers/libpod/version"
"github.com/opentracing/opentracing-go"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
logrusSyslog "github.com/sirupsen/logrus/hooks/syslog"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
)
var (
rootCmd = &cobra.Command{
Use: path.Base(os.Args[0]),
Long: "Manage pods, containers and images",
SilenceUsage: true,
SilenceErrors: true,
TraverseChildren: true,
PersistentPreRunE: preRunE,
RunE: registry.SubCommandExists,
PersistentPostRunE: postRunE,
Version: version.Version,
}
logLevels = entities.NewStringSet("debug", "info", "warn", "error", "fatal", "panic")
logLevel = "error"
useSyslog bool
)
func init() {
cobra.OnInitialize(
rootlessHook,
loggingHook,
syslogHook,
)
rootFlags(registry.PodmanOptions, rootCmd.PersistentFlags())
}
func Execute() {
if err := rootCmd.ExecuteContext(registry.GetContextWithOptions()); err != nil {
logrus.Error(err)
} else if registry.GetExitCode() == registry.ExecErrorCodeGeneric {
// The exitCode modified from registry.ExecErrorCodeGeneric,
// indicates an application
// running inside of a container failed, as opposed to the
// podman command failed. Must exit with that exit code
// otherwise command exited correctly.
registry.SetExitCode(0)
}
os.Exit(registry.GetExitCode())
}
func preRunE(cmd *cobra.Command, _ []string) error {
// Update PodmanOptions now that we "know" more
// TODO: pass in path overriding configuration file
registry.PodmanOptions = registry.NewPodmanConfig()
cmd.SetHelpTemplate(registry.HelpTemplate())
cmd.SetUsageTemplate(registry.UsageTemplate())
if cmd.Flag("cpu_profile").Changed {
f, err := os.Create(registry.PodmanOptions.CpuProfile)
if err != nil {
return errors.Wrapf(err, "unable to create cpu profiling file %s",
registry.PodmanOptions.CpuProfile)
}
if err := pprof.StartCPUProfile(f); err != nil {
return err
}
}
if cmd.Flag("trace").Changed {
tracer, closer := tracing.Init("podman")
opentracing.SetGlobalTracer(tracer)
registry.PodmanOptions.SpanCloser = closer
registry.PodmanOptions.Span = tracer.StartSpan("before-context")
registry.PodmanOptions.SpanCtx = opentracing.ContextWithSpan(context.Background(), registry.PodmanOptions.Span)
}
return nil
}
func postRunE(cmd *cobra.Command, args []string) error {
if cmd.Flag("cpu-profile").Changed {
pprof.StopCPUProfile()
}
if cmd.Flag("trace").Changed {
registry.PodmanOptions.Span.Finish()
registry.PodmanOptions.SpanCloser.Close()
}
return nil
}
func loggingHook() {
if !logLevels.Contains(logLevel) {
logrus.Errorf("Log Level \"%s\" is not supported, choose from: %s", logLevel, logLevels.String())
os.Exit(1)
}
level, err := logrus.ParseLevel(logLevel)
if err != nil {
fmt.Fprintf(os.Stderr, err.Error())
os.Exit(1)
}
logrus.SetLevel(level)
if logrus.IsLevelEnabled(logrus.InfoLevel) {
logrus.Infof("%s filtering at log level %s", os.Args[0], logrus.GetLevel())
}
}
func syslogHook() {
if useSyslog {
hook, err := logrusSyslog.NewSyslogHook("", "", syslog.LOG_INFO, "")
if err != nil {
logrus.WithError(err).Error("Failed to initialize syslog hook")
}
if err == nil {
logrus.AddHook(hook)
}
}
}
func rootlessHook() {
if rootless.IsRootless() {
logrus.Error("rootless mode is currently not supported. Support will return ASAP.")
}
// ce, err := registry.NewContainerEngine(rootCmd, []string{})
// if err != nil {
// logrus.WithError(err).Fatal("failed to obtain container engine")
// }
// ce.SetupRootLess(rootCmd)
}
func rootFlags(opts entities.PodmanConfig, flags *pflag.FlagSet) {
// V2 flags
flags.StringVarP(&opts.Uri, "remote", "r", "", "URL to access Podman service")
flags.StringSliceVar(&opts.Identities, "identity", []string{}, "path to SSH identity file")
// Override default --help information of `--version` global flag
// TODO: restore -v option for version without breaking -v for volumes
var dummyVersion bool
flags.BoolVar(&dummyVersion, "version", false, "Version of Podman")
cfg := opts.Config
flags.StringVar(&cfg.Engine.CgroupManager, "cgroup-manager", cfg.Engine.CgroupManager, opts.CGroupUsage)
flags.StringVar(&opts.CpuProfile, "cpu-profile", "", "Path for the cpu profiling results")
flags.StringVar(&opts.ConmonPath, "conmon", "", "Path of the conmon binary")
flags.StringVar(&cfg.Engine.NetworkCmdPath, "network-cmd-path", cfg.Engine.NetworkCmdPath, "Path to the command for configuring the network")
flags.StringVar(&cfg.Network.NetworkConfigDir, "cni-config-dir", cfg.Network.NetworkConfigDir, "Path of the configuration directory for CNI networks")
flags.StringVar(&cfg.Containers.DefaultMountsFile, "default-mounts-file", cfg.Containers.DefaultMountsFile, "Path to default mounts file")
flags.StringVar(&cfg.Engine.EventsLogger, "events-backend", cfg.Engine.EventsLogger, `Events backend to use ("file"|"journald"|"none")`)
flags.StringSliceVar(&cfg.Engine.HooksDir, "hooks-dir", cfg.Engine.HooksDir, "Set the OCI hooks directory path (may be set multiple times)")
flags.IntVar(&opts.MaxWorks, "max-workers", 0, "The maximum number of workers for parallel operations")
flags.StringVar(&cfg.Engine.Namespace, "namespace", cfg.Engine.Namespace, "Set the libpod namespace, used to create separate views of the containers and pods on the system")
flags.StringVar(&cfg.Engine.StaticDir, "root", "", "Path to the root directory in which data, including images, is stored")
flags.StringVar(&opts.Runroot, "runroot", "", "Path to the 'run directory' where all state information is stored")
flags.StringVar(&opts.RuntimePath, "runtime", "", "Path to the OCI-compatible binary used to run containers, default is /usr/bin/runc")
// -s is deprecated due to conflict with -s on subcommands
flags.StringVar(&opts.StorageDriver, "storage-driver", "", "Select which storage driver is used to manage storage of images and containers (default is overlay)")
flags.StringArrayVar(&opts.StorageOpts, "storage-opt", []string{}, "Used to pass an option to the storage driver")
flags.StringVar(&opts.Engine.TmpDir, "tmpdir", "", "Path to the tmp directory for libpod state content.\n\nNote: use the environment variable 'TMPDIR' to change the temporary storage location for container images, '/var/tmp'.\n")
flags.BoolVar(&opts.Trace, "trace", false, "Enable opentracing output (default false)")
// Override default --help information of `--help` global flag
var dummyHelp bool
flags.BoolVar(&dummyHelp, "help", false, "Help for podman")
flags.StringVar(&logLevel, "log-level", logLevel, fmt.Sprintf("Log messages above specified level (%s)", logLevels.String()))
// Hide these flags for both ABI and Tunneling
for _, f := range []string{
"cpu-profile",
"default-mounts-file",
"max-workers",
"trace",
} {
if err := flags.MarkHidden(f); err != nil {
logrus.Warnf("unable to mark %s flag as hidden", f)
}
}
// Only create these flags for ABI connections
if !registry.IsRemote() {
flags.BoolVar(&useSyslog, "syslog", false, "Output logging information to syslog as well as the console (default false)")
}
}
|
