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package pods
import (
"os"
"github.com/containers/common/pkg/completion"
"github.com/containers/podman/v3/cmd/podman/common"
"github.com/containers/podman/v3/cmd/podman/registry"
"github.com/containers/podman/v3/cmd/podman/validate"
"github.com/containers/podman/v3/libpod/define"
"github.com/containers/podman/v3/pkg/domain/entities"
"github.com/containers/podman/v3/pkg/util"
"github.com/pkg/errors"
"github.com/spf13/cobra"
)
// logsOptionsWrapper wraps entities.LogsOptions and prevents leaking
// CLI-only fields into the API types.
type logsOptionsWrapper struct {
entities.PodLogsOptions
SinceRaw string
UntilRaw string
}
var (
logsPodOptions logsOptionsWrapper
logsPodDescription = `Displays logs for pod with one or more containers.`
podLogsCommand = &cobra.Command{
Use: "logs [options] POD",
Short: "Fetch logs for pod with one or more containers",
Long: logsPodDescription,
// We dont want users to invoke latest and pod together
Args: func(cmd *cobra.Command, args []string) error {
switch {
case registry.IsRemote() && logsPodOptions.Latest:
return errors.New(cmd.Name() + " does not support 'latest' when run remotely")
case len(args) > 1:
return errors.New("requires exactly 1 arg")
case logsPodOptions.Latest && len(args) > 0:
return errors.New("--latest and pods cannot be used together")
case !logsPodOptions.Latest && len(args) < 1:
return errors.New("specify at least one pod name or ID to log")
}
return nil
},
RunE: logs,
ValidArgsFunction: common.AutocompletePods,
Example: `podman pod logs podID
podman pod logs -c ctrname podName
podman pod logs --tail 2 mywebserver
podman pod logs --follow=true --since 10m podID
podman pod logs mywebserver`,
}
)
func init() {
// pod logs
registry.Commands = append(registry.Commands, registry.CliCommand{
Command: podLogsCommand,
Parent: podCmd,
})
logsFlags(podLogsCommand)
validate.AddLatestFlag(podLogsCommand, &logsPodOptions.Latest)
}
func logsFlags(cmd *cobra.Command) {
flags := cmd.Flags()
flags.BoolVar(&logsPodOptions.Details, "details", false, "Show extra details provided to the logs")
flags.BoolVarP(&logsPodOptions.Follow, "follow", "f", false, "Follow log output.")
containerNameFlag := "container"
flags.StringVarP(&logsPodOptions.ContainerName, containerNameFlag, "c", "", "Filter logs by container name or id which belongs to pod")
_ = cmd.RegisterFlagCompletionFunc(containerNameFlag, common.AutocompleteContainers)
sinceFlagName := "since"
flags.StringVar(&logsPodOptions.SinceRaw, sinceFlagName, "", "Show logs since TIMESTAMP")
_ = cmd.RegisterFlagCompletionFunc(sinceFlagName, completion.AutocompleteNone)
untilFlagName := "until"
flags.StringVar(&logsPodOptions.UntilRaw, untilFlagName, "", "Show logs until TIMESTAMP")
_ = cmd.RegisterFlagCompletionFunc(untilFlagName, completion.AutocompleteNone)
tailFlagName := "tail"
flags.Int64Var(&logsPodOptions.Tail, tailFlagName, -1, "Output the specified number of LINES at the end of the logs.")
_ = cmd.RegisterFlagCompletionFunc(tailFlagName, completion.AutocompleteNone)
flags.BoolVarP(&logsPodOptions.Timestamps, "timestamps", "t", false, "Output the timestamps in the log")
flags.SetInterspersed(false)
_ = flags.MarkHidden("details")
}
func logs(_ *cobra.Command, args []string) error {
if logsPodOptions.SinceRaw != "" {
// parse time, error out if something is wrong
since, err := util.ParseInputTime(logsPodOptions.SinceRaw, true)
if err != nil {
return errors.Wrapf(err, "error parsing --since %q", logsPodOptions.SinceRaw)
}
logsPodOptions.Since = since
}
if logsPodOptions.UntilRaw != "" {
// parse time, error out if something is wrong
until, err := util.ParseInputTime(logsPodOptions.UntilRaw, false)
if err != nil {
return errors.Wrapf(err, "error parsing --until %q", logsPodOptions.UntilRaw)
}
logsPodOptions.Until = until
}
// Remote can only process one container at a time
if registry.IsRemote() && logsPodOptions.ContainerName == "" {
return errors.Wrapf(define.ErrInvalidArg, "-c or --container cannot be empty")
}
logsPodOptions.StdoutWriter = os.Stdout
logsPodOptions.StderrWriter = os.Stderr
return registry.ContainerEngine().PodLogs(registry.GetContext(), args[0], logsPodOptions.PodLogsOptions)
}
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