Files

270 lines
7.2 KiB
Go

package main
import (
"context"
"fmt"
"sort"
"time"
"charm.land/lipgloss/v2"
"github.com/docker/docker/api/types/container"
"github.com/docker/go-units"
"github.com/psviderski/uncloud/internal/cli"
"github.com/psviderski/uncloud/internal/cli/tui"
"github.com/psviderski/uncloud/pkg/api"
"github.com/psviderski/uncloud/pkg/client"
"github.com/spf13/cobra"
)
const (
sortByService = "service"
sortByMachine = "machine"
sortByHealth = "health"
)
type containerHighlight int
const (
highlightDanger containerHighlight = iota
highlightWarning
highlightSuccess
highlightNormal
)
type psOptions struct {
sortBy string
}
func NewPsCommand() *cobra.Command {
opts := psOptions{}
cmd := &cobra.Command{
Use: "ps",
Short: "List all service containers.",
Long: `List all service containers across all machines in the cluster.
This command provides a comprehensive overview of all running containers that are part of a service,
making it easy to see the distribution and status of containers across the cluster.`,
RunE: func(cmd *cobra.Command, args []string) error {
uncli := cmd.Context().Value("cli").(*cli.CLI)
if opts.sortBy != sortByService && opts.sortBy != sortByMachine && opts.sortBy != sortByHealth {
return fmt.Errorf("invalid value for --sort: %q, must be one of '%s', '%s' or '%s'", opts.sortBy,
sortByService, sortByMachine, sortByHealth)
}
return runPs(cmd.Context(), uncli, opts)
},
GroupID: "service",
}
cmd.Flags().StringVarP(&opts.sortBy, "sort", "s", sortByService,
"Sort containers by 'service', 'machine', or 'health'.")
return cmd
}
type containerInfo struct {
serviceName string
machineName string
id string
image string
status string
highlight containerHighlight
created time.Time
ip string
// Hook type (e.g., "pre-deploy"), empty for regular containers.
hook string
}
func runPs(ctx context.Context, uncli *cli.CLI, opts psOptions) error {
clusterClient, err := uncli.ConnectCluster(ctx)
if err != nil {
return fmt.Errorf("connect to cluster: %w", err)
}
defer clusterClient.Close()
var containers []containerInfo
err = tui.RunSpinner(ctx, "Collecting container info...", func(ctx context.Context) error {
containers, err = collectContainers(ctx, clusterClient)
return err
})
if err != nil {
return fmt.Errorf("collect containers: %w", err)
}
// Sort the containers based on the sorting option.
sort.SliceStable(containers, func(i, j int) bool {
a, b := containers[i], containers[j]
switch opts.sortBy {
case sortByHealth:
if a.highlight != b.highlight {
return a.highlight < b.highlight
}
if a.serviceName != b.serviceName {
return a.serviceName < b.serviceName
}
case sortByMachine:
if a.machineName != b.machineName {
return a.machineName < b.machineName
}
if a.serviceName != b.serviceName {
return a.serviceName < b.serviceName
}
default: // sortByService
if a.serviceName != b.serviceName {
return a.serviceName < b.serviceName
}
}
// Fallback to creation time (newest first).
return a.created.After(b.created)
})
return printContainers(containers)
}
func printContainers(containers []containerInfo) error {
t := tui.NewTable()
// Show HOOK column only when hook containers are present.
hasHooks := false
for _, ctr := range containers {
if ctr.hook != "" {
hasHooks = true
break
}
}
if hasHooks {
t.Headers("SERVICE", "CONTAINER ID", "IMAGE", "CREATED", "STATUS", "HOOK", "IP ADDRESS", "MACHINE")
} else {
t.Headers("SERVICE", "CONTAINER ID", "IMAGE", "CREATED", "STATUS", "IP ADDRESS", "MACHINE")
}
for _, ctr := range containers {
id := ctr.id
if len(id) > 12 {
id = id[:12]
}
created := units.HumanDuration(time.Now().UTC().Sub(ctr.created)) + " ago"
var statusStyle lipgloss.Style
switch ctr.highlight {
case highlightSuccess:
statusStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("2")) // Green
case highlightDanger:
statusStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("1")) // Red
case highlightWarning:
statusStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("3")) // Yellow
default:
statusStyle = lipgloss.NewStyle() // Default
}
if hasHooks {
t.Row(
ctr.serviceName,
id,
tui.FormatImage(ctr.image, tui.NoStyle),
created,
statusStyle.Render(ctr.status),
ctr.hook,
ctr.ip,
ctr.machineName,
)
} else {
t.Row(
ctr.serviceName,
id,
tui.FormatImage(ctr.image, tui.NoStyle),
created,
statusStyle.Render(ctr.status),
ctr.ip,
ctr.machineName,
)
}
}
lipgloss.Println(t)
return nil
}
func collectContainers(ctx context.Context, cli *client.Client) ([]containerInfo, error) {
listCtx := cli.ProxyMachinesContext(ctx, nil)
// List all service containers across all machines in the cluster.
machineContainers, err := cli.Docker.ListServiceContainers(
listCtx, "", container.ListOptions{All: true},
)
if err != nil {
return nil, fmt.Errorf("list service containers: %w", err)
}
var containers []containerInfo
for _, msc := range machineContainers {
// NOTE: Metadata should never be nil in practice. This is legacy fallback that will be removed.
if msc.Metadata == nil {
tui.PrintWarning("metadata is missing in response from unknown server")
continue
}
machineName := msc.Metadata.MachineName
if msc.Metadata.Error != "" {
tui.PrintWarning(fmt.Sprintf("failed to list service containers on machine %s: %s",
machineName, msc.Metadata.Error))
continue
}
for _, ctr := range append(msc.Containers, msc.HookContainers...) {
if ctr.Container.State == nil || ctr.Container.Config == nil {
continue
}
status, err := ctr.Container.HumanState()
if err != nil {
return nil, fmt.Errorf("get human state for container %s: %w", ctr.Container.ID, err)
}
var highlight containerHighlight
healthStatus := ""
if ctr.Container.State.Health != nil {
healthStatus = ctr.Container.State.Health.Status
}
if healthStatus == container.Unhealthy || ctr.Container.State.Status == "dead" || ctr.Container.State.OOMKilled || ctr.Container.State.Dead {
highlight = highlightDanger
} else if healthStatus == container.Healthy {
highlight = highlightSuccess
} else if ctr.Container.State.Status == "running" {
highlight = highlightNormal
} else if ctr.IsHook() && ctr.Container.State.Status == "exited" && ctr.Container.State.ExitCode == 0 {
// Hook containers (e.g., pre-deploy) are expected to exit successfully.
highlight = highlightNormal
} else { // Other non-critical but noteworthy states
highlight = highlightWarning
}
created, _ := time.Parse(time.RFC3339Nano, ctr.Container.Created)
ip := ctr.Container.UncloudNetworkIP()
ipStr := ""
// The container might not have an IP if it's not running or uses the host network.
if ip.IsValid() {
ipStr = ip.String()
}
info := containerInfo{
serviceName: ctr.ServiceName(),
machineName: machineName,
id: ctr.Container.ID,
image: ctr.Container.Config.Image,
status: status,
highlight: highlight,
created: created,
ip: ipStr,
hook: ctr.Config.Labels[api.LabelHook],
}
containers = append(containers, info)
}
}
return containers, nil
}