add client to containermap, add views package, help view

container.go

@@ -8,6 +8,7 @@ import (
 
 type Container struct {
 	id      string
+	name    string
 	done    chan bool
 	stats   chan *docker.Stats
 	widgets *Widgets

containermap.go

@@ -1,23 +1,57 @@
 package main
 
 import (
+	"os"
 	"strings"
 
 	"github.com/fsouza/go-dockerclient"
 )
 
+var filters = map[string][]string{
+	"status": []string{"running"},
+}
+
 func NewContainerMap() *ContainerMap {
-	return &ContainerMap{
+	// init docker client
-		containers: make(map[string]*Container),
+	host := os.Getenv("DOCKER_HOST")
-		sortField:  "cpu",
+	if host == "" {
+		host = "unix:///var/run/docker.sock"
 	}
+	client, err := docker.NewClient(host)
+	if err != nil {
+		panic(err)
+	}
+
+	cm := &ContainerMap{
+		client:     client,
+		containers: make(map[string]*Container),
+		sortField:  SortFields[0],
+	}
+	cm.Refresh()
+	return cm
 }
 
 type ContainerMap struct {
+	client     *docker.Client
 	containers map[string]*Container
 	sortField  string
 }
 
+func (cm *ContainerMap) Refresh() {
+	opts := docker.ListContainersOptions{
+		Filters: filters,
+	}
+	containers, err := cm.client.ListContainers(opts)
+	if err != nil {
+		panic(err)
+	}
+	for _, c := range containers {
+		if _, ok := cm.containers[c.ID[:12]]; ok == false {
+			cm.Add(c)
+		}
+	}
+}
+
 // Return number of containers/rows
 func (cm *ContainerMap) Len() uint {
 	return uint(len(cm.containers))
@@ -28,11 +62,13 @@ func (cm *ContainerMap) Add(c docker.APIContainers) {
 	name := strings.Replace(c.Names[0], "/", "", 1) // use primary container name
 	cm.containers[id] = &Container{
 		id:      id,
+		name:    name,
 		done:    make(chan bool),
 		stats:   make(chan *docker.Stats),
-		widgets: NewWidgets(cid, name),
+		widgets: NewWidgets(id, name),
 		reader:  &StatReader{},
 	}
+	cm.containers[id].Collect(cm.client)
 }
 
 // Get a single container, by ID

grid.go

@@ -3,6 +3,7 @@ package main
 import (
 	"fmt"
 
+	"github.com/bcicen/ctop/views"
 	ui "github.com/gizak/termui"
 )
 
@@ -58,7 +59,7 @@ func (g *Grid) Redraw() {
 func header() *ui.Row {
 	return ui.NewRow(
 		ui.NewCol(2, 0, headerPar("NAME")),
-		ui.NewCol(1, 0, headerPar("CID")),
+		ui.NewCol(2, 0, headerPar("CID")),
 		ui.NewCol(2, 0, headerPar("CPU")),
 		ui.NewCol(2, 0, headerPar("MEM")),
 		ui.NewCol(2, 0, headerPar("NET RX/TX")),
@@ -74,12 +75,26 @@ func headerPar(s string) *ui.Par {
 	return p
 }
 
-func Display(g *Grid) {
+type View func()
+
+func ResetView() {
+	ui.DefaultEvtStream.ResetHandlers()
+	ui.Clear()
+}
+
+func OpenView(v View) {
+	ResetView()
+	defer ResetView()
+	v()
+}
+
+func Display(g *Grid) bool {
+	var newView View
+
 	if err := ui.Init(); err != nil {
 		panic(err)
 	}
 	defer ui.Close()
-
 	// calculate layout
 	ui.Body.Align()
 	g.Cursor()
@@ -97,6 +112,10 @@ func Display(g *Grid) {
 			g.Cursor()
 		}
 	})
+	ui.Handle("/sys/kbd/h", func(ui.Event) {
+		newView = views.Help
+		ui.StopLoop()
+	})
 	ui.Handle("/sys/kbd/q", func(ui.Event) {
 		ui.StopLoop()
 	})
@@ -112,4 +131,9 @@ func Display(g *Grid) {
 	})
 
 	ui.Loop()
+	if newView != nil {
+		OpenView(newView)
+		return false
+	}
+	return true
 }

main.go

@@ -2,43 +2,14 @@ package main
 
 import (
 	"os"
-
-	"github.com/fsouza/go-dockerclient"
 )
 
-func getContainers(client *docker.Client) []docker.APIContainers {
-	filters := make(map[string][]string)
-	filters["status"] = []string{"running"}
-	opts := docker.ListContainersOptions{
-		Filters: filters,
-	}
-	containers, err := client.ListContainers(opts)
-	if err != nil {
-		panic(err)
-	}
-	return containers
-}
-
 func main() {
-	dockerhost := os.Getenv("DOCKER_HOST")
-	if dockerhost == "" {
-		dockerhost = "unix:///var/run/docker.sock"
-	}
-
-	client, err := docker.NewClient(dockerhost)
-	if err != nil {
-		panic(err)
-	}
-
 	g := NewGrid()
-	for _, c := range getContainers(client) {
+	for {
-		g.containers.Add(c)
+		exit := Display(g)
+		if exit {
+			os.Exit(0)
+		}
 	}
-
-	for _, c := range g.containers.All() {
-		c.Collect(client)
-	}
-
-	Display(g)
-
 }

sort.go

@@ -4,6 +4,8 @@ import (
 	"sort"
 )
 
+var SortFields = []string{"id", "name", "cpu", "mem"}
+
 type ByID []*Container
 
 func (a ByID) Len() int           { return len(a) }
@@ -14,7 +16,7 @@ type ByName []*Container
 
 func (a ByName) Len() int           { return len(a) }
 func (a ByName) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
-func (a ByName) Less(i, j int) bool { return a[i].id < a[j].id }
+func (a ByName) Less(i, j int) bool { return a[i].name < a[j].name }
 
 type ByCPU []*Container
 

views/help.go

@@ -0,0 +1,26 @@
+package views
+
+import (
+	"strings"
+
+	ui "github.com/gizak/termui"
+)
+
+var helpDialog = []string{
+	"[h] - open this help dialog",
+	"[q] - exit ctop",
+}
+
+func Help() {
+	p := ui.NewPar(strings.Join(helpDialog, "\n"))
+	p.Height = 10
+	p.Width = 50
+	p.TextFgColor = ui.ColorWhite
+	p.BorderLabel = "Help"
+	p.BorderFg = ui.ColorCyan
+	ui.Render(p)
+	ui.Handle("/sys/kbd/q", func(ui.Event) {
+		ui.StopLoop()
+	})
+	ui.Loop()
+}

widgets.go

@@ -18,7 +18,7 @@ type Widgets struct {
 func (w *Widgets) MakeRow() *ui.Row {
 	return ui.NewRow(
 		ui.NewCol(2, 0, w.name),
-		ui.NewCol(1, 0, w.cid),
+		ui.NewCol(2, 0, w.cid),
 		ui.NewCol(2, 0, w.cpu),
 		ui.NewCol(2, 0, w.memory),
 		ui.NewCol(2, 0, w.net),