mirror of
https://github.com/jesseduffield/lazydocker.git
synced 2026-07-21 23:01:03 +00:00
386 lines
9.9 KiB
Go
386 lines
9.9 KiB
Go
package gui
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import (
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"bufio"
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"context"
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"encoding/json"
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"fmt"
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"os/exec"
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"time"
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"github.com/docker/docker/api/types"
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"github.com/fatih/color"
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"github.com/go-errors/errors"
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"github.com/jesseduffield/gocui"
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"github.com/jesseduffield/lazydocker/pkg/commands"
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"github.com/jesseduffield/lazydocker/pkg/utils"
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"golang.org/x/xerrors"
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)
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// list panel functions
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func (gui *Gui) getContainerContexts() []string {
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return []string{"logs", "config", "stats"}
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}
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func (gui *Gui) getSelectedContainer(g *gocui.Gui) (*commands.Container, error) {
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selectedLine := gui.State.Panels.Containers.SelectedLine
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if selectedLine == -1 {
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return &commands.Container{}, gui.Errors.ErrNoContainers
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}
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return gui.State.Containers[selectedLine], nil
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}
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func (gui *Gui) handleContainersFocus(g *gocui.Gui, v *gocui.View) error {
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if gui.popupPanelFocused() {
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return nil
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}
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cx, cy := v.Cursor()
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_, oy := v.Origin()
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prevSelectedLine := gui.State.Panels.Containers.SelectedLine
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newSelectedLine := cy - oy
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if newSelectedLine > len(gui.State.Containers)-1 || len(utils.Decolorise(gui.State.Containers[newSelectedLine].Name)) < cx {
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return gui.handleContainerSelect(gui.g, v, false)
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}
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gui.State.Panels.Containers.SelectedLine = newSelectedLine
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if prevSelectedLine == newSelectedLine && gui.currentViewName() == v.Name() {
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return gui.handleContainerPress(gui.g, v)
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} else {
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return gui.handleContainerSelect(gui.g, v, true)
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}
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}
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func (gui *Gui) handleContainerSelect(g *gocui.Gui, v *gocui.View, alreadySelected bool) error {
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if _, err := gui.g.SetCurrentView(v.Name()); err != nil {
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return err
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}
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container, err := gui.getSelectedContainer(g)
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if err != nil {
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if err != gui.Errors.ErrNoContainers {
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return err
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}
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return gui.renderString(g, "main", gui.Tr.SLocalize("NoChangedContainers"))
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}
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if err := gui.focusPoint(0, gui.State.Panels.Containers.SelectedLine, len(gui.State.Containers), v); err != nil {
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return err
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}
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mainView := gui.getMainView()
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gui.State.MainWriterID++
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writerID := gui.State.MainWriterID
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mainView.Clear()
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mainView.SetOrigin(0, 0)
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mainView.SetCursor(0, 0)
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switch gui.getContainerContexts()[gui.State.Panels.Containers.ContextIndex] {
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case "logs":
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if err := gui.renderLogs(mainView, container, writerID); err != nil {
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return err
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}
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case "config":
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if err := gui.renderConfig(mainView, container, writerID); err != nil {
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return err
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}
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case "stats":
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if err := gui.renderStats(mainView, container, writerID); err != nil {
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return err
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}
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default:
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return errors.New("Unknown context for containers panel")
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}
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return nil
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}
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func (gui *Gui) renderConfig(mainView *gocui.View, container *commands.Container, writerID int) error {
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mainView.Autoscroll = false
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mainView.Title = "Config"
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data, err := json.MarshalIndent(&container.Container, "", " ")
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if err != nil {
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return err
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}
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gui.renderString(gui.g, "main", string(data))
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return nil
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}
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func (gui *Gui) renderStats(mainView *gocui.View, container *commands.Container, writerID int) error {
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mainView.Autoscroll = false
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mainView.Title = "Stats"
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stream, err := gui.DockerCommand.Client.ContainerStats(context.Background(), container.ID, true)
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if err != nil {
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return err
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}
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go func() {
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cpuUsageHistory := []float64{}
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memoryUsageHistory := []float64{}
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scanner := bufio.NewScanner(stream.Body)
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for scanner.Scan() {
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data := scanner.Bytes()
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var stats commands.ContainerStats
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json.Unmarshal(data, &stats)
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cpuUsageHistory = append(cpuUsageHistory, stats.CalculateContainerCPUPercentage())
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if len(cpuUsageHistory) >= 20 {
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cpuUsageHistory = cpuUsageHistory[1:]
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}
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memoryUsageHistory = append(memoryUsageHistory, stats.CalculateContainerMemoryUsage())
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if len(memoryUsageHistory) >= 20 {
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memoryUsageHistory = memoryUsageHistory[1:]
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}
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width, _ := mainView.Size()
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contents, err := stats.RenderStats(width, cpuUsageHistory, memoryUsageHistory)
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if err != nil {
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gui.createErrorPanel(gui.g, err.Error())
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}
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if gui.State.MainWriterID != writerID {
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stream.Body.Close()
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return
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}
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gui.reRenderString(gui.g, "main", contents)
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}
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stream.Body.Close()
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}()
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return nil
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}
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func (gui *Gui) renderLogs(mainView *gocui.View, container *commands.Container, writerID int) error {
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mainView.Autoscroll = true
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mainView.Title = "Logs"
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var cmd *exec.Cmd
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cmd = gui.OSCommand.RunCustomCommand("docker logs --since=60m --timestamps --follow " + container.ID)
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cmd.Stdout = mainView
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cmd.Start()
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go func() {
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for {
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time.Sleep(time.Second / 100)
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if gui.State.MainWriterID != writerID {
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cmd.Process.Kill()
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return
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}
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}
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}()
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return nil
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}
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func (gui *Gui) refreshContainers() error {
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selectedContainer, _ := gui.getSelectedContainer(gui.g)
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containersView := gui.getContainersView()
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if containersView == nil {
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// if the containersView hasn't been instantiated yet we just return
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return nil
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}
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if err := gui.refreshStateContainers(); err != nil {
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return err
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}
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if len(gui.State.Containers) > 0 && gui.State.Panels.Containers.SelectedLine == -1 {
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gui.State.Panels.Containers.SelectedLine = 0
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}
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if len(gui.State.Containers)-1 < gui.State.Panels.Containers.SelectedLine {
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gui.State.Panels.Containers.SelectedLine = len(gui.State.Containers) - 1
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}
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gui.g.Update(func(g *gocui.Gui) error {
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containersView.Clear()
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isFocused := gui.g.CurrentView().Name() == "containers"
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list, err := utils.RenderList(gui.State.Containers, isFocused)
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if err != nil {
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return err
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}
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fmt.Fprint(containersView, list)
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if containersView == g.CurrentView() {
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newSelectedContainer, _ := gui.getSelectedContainer(gui.g)
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alreadySelected := newSelectedContainer.Name == selectedContainer.Name
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return gui.handleContainerSelect(g, containersView, alreadySelected)
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}
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return nil
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})
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return nil
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}
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func (gui *Gui) refreshStateContainers() error {
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containers, err := gui.DockerCommand.GetContainers()
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if err != nil {
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return err
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}
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gui.State.Containers = containers
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return nil
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}
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func (gui *Gui) handleContainersNextLine(g *gocui.Gui, v *gocui.View) error {
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if gui.popupPanelFocused() {
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return nil
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}
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panelState := gui.State.Panels.Containers
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gui.changeSelectedLine(&panelState.SelectedLine, len(gui.State.Containers), false)
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return gui.handleContainerSelect(gui.g, v, false)
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}
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func (gui *Gui) handleContainersPrevLine(g *gocui.Gui, v *gocui.View) error {
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if gui.popupPanelFocused() {
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return nil
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}
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panelState := gui.State.Panels.Containers
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gui.changeSelectedLine(&panelState.SelectedLine, len(gui.State.Containers), true)
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return gui.handleContainerSelect(gui.g, v, false)
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}
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func (gui *Gui) handleContainerPress(g *gocui.Gui, v *gocui.View) error {
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return nil
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}
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func (gui *Gui) handleContainersPrevContext(g *gocui.Gui, v *gocui.View) error {
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contexts := gui.getContainerContexts()
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if gui.State.Panels.Containers.ContextIndex >= len(contexts)-1 {
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gui.State.Panels.Containers.ContextIndex = 0
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} else {
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gui.State.Panels.Containers.ContextIndex++
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}
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gui.handleContainerSelect(gui.g, v, true)
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return nil
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}
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func (gui *Gui) handleContainersNextContext(g *gocui.Gui, v *gocui.View) error {
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contexts := gui.getContainerContexts()
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if gui.State.Panels.Containers.ContextIndex <= 0 {
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gui.State.Panels.Containers.ContextIndex = len(contexts) - 1
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} else {
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gui.State.Panels.Containers.ContextIndex--
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}
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gui.handleContainerSelect(gui.g, v, true)
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return nil
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}
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type removeOption struct {
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description string
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command string
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configOptions types.ContainerRemoveOptions
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runCommand bool
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}
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// GetDisplayStrings is a function.
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func (r *removeOption) GetDisplayStrings(isFocused bool) []string {
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return []string{r.description, color.New(color.FgRed).Sprint(r.command)}
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}
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func (gui *Gui) handleContainersRemoveMenu(g *gocui.Gui, v *gocui.View) error {
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container, err := gui.getSelectedContainer(g)
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if err != nil {
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return nil
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}
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options := []*removeOption{
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{
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description: gui.Tr.SLocalize("remove"),
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command: "docker rm " + container.ID[1:10],
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configOptions: types.ContainerRemoveOptions{},
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runCommand: true,
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},
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{
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description: gui.Tr.SLocalize("removeWithVolumes"),
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command: "docker rm --volumes " + container.ID[1:10],
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configOptions: types.ContainerRemoveOptions{RemoveVolumes: true},
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runCommand: true,
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},
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{
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description: gui.Tr.SLocalize("cancel"),
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runCommand: false,
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},
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}
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handleMenuPress := func(index int) error {
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if !options[index].runCommand {
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return nil
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}
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configOptions := options[index].configOptions
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if cerr := container.Remove(configOptions); cerr != nil {
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var originalErr commands.ComplexError
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if xerrors.As(cerr, &originalErr) {
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if originalErr.Code == commands.MustStopContainer {
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return gui.createConfirmationPanel(gui.g, v, gui.Tr.SLocalize("Confirm"), gui.Tr.SLocalize("mustForceToRemove"), func(g *gocui.Gui, v *gocui.View) error {
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configOptions.Force = true
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if err := container.Remove(configOptions); err != nil {
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return err
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}
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return gui.refreshContainers()
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}, nil)
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}
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} else {
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return gui.createErrorPanel(gui.g, err.Error())
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}
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}
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return gui.refreshContainers()
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}
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return gui.createMenu("", options, len(options), handleMenuPress)
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}
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func (gui *Gui) handleContainerStop(g *gocui.Gui, v *gocui.View) error {
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container, err := gui.getSelectedContainer(g)
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if err != nil {
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return nil
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}
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return gui.createConfirmationPanel(gui.g, v, gui.Tr.SLocalize("Confirm"), gui.Tr.SLocalize("StopContainer"), func(g *gocui.Gui, v *gocui.View) error {
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if err := container.Stop(); err != nil {
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return gui.createErrorPanel(gui.g, err.Error())
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}
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return gui.refreshContainers()
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}, nil)
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}
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func (gui *Gui) handleContainerRestart(g *gocui.Gui, v *gocui.View) error {
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container, err := gui.getSelectedContainer(g)
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if err != nil {
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return nil
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}
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return gui.WithWaitingStatus(gui.Tr.SLocalize("RestartingStatus"), func() error {
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if err := container.Restart(); err != nil {
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return gui.createErrorPanel(gui.g, err.Error())
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}
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return gui.refreshContainers()
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})
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}
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