diff options
Diffstat (limited to 'cmd')
| -rw-r--r-- | cmd/podman/pods/logs.go | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/cmd/podman/pods/logs.go b/cmd/podman/pods/logs.go new file mode 100644 index 000000000..fe5205669 --- /dev/null +++ b/cmd/podman/pods/logs.go @@ -0,0 +1,140 @@ +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.` + logsPodCommand = &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 togather + 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`, + } + + containerLogsCommand = &cobra.Command{ + Use: logsPodCommand.Use, + Short: logsPodCommand.Short, + Long: logsPodCommand.Long, + Args: logsPodCommand.Args, + RunE: logsPodCommand.RunE, + ValidArgsFunction: logsPodCommand.ValidArgsFunction, + 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`, + } +) + +func init() { + registry.Commands = append(registry.Commands, registry.CliCommand{ + Command: logsPodCommand, + }) + logsFlags(logsPodCommand) + validate.AddLatestFlag(logsPodCommand, &logsPodOptions.Latest) + + // container logs + registry.Commands = append(registry.Commands, registry.CliCommand{ + Command: containerLogsCommand, + Parent: podCmd, + }) + logsFlags(containerLogsCommand) + validate.AddLatestFlag(containerLogsCommand, &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) +} |