add WidgetUpdater interface to container, replace struct fields with metamap

container.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"github.com/bcicen/ctop/cwidgets"
 	"github.com/bcicen/ctop/cwidgets/compact"
 	"github.com/bcicen/ctop/metrics"
 )
@@ -9,25 +10,36 @@ import (
 type Container struct {
 	metrics.Metrics
 	Id        string
-	Name      string
-	State     string
 	Meta      map[string]string
-	Updates   chan [2]string
 	Widgets   *compact.Compact
+	updater   cwidgets.WidgetUpdater
 	collector metrics.Collector
 }
 
 func NewContainer(id string, collector metrics.Collector) *Container {
+	widgets := compact.NewCompact(id)
 	return &Container{
 		Metrics:   metrics.NewMetrics(),
 		Id:        id,
 		Meta:      make(map[string]string),
-		Updates:   make(chan [2]string),
-		Widgets:   compact.NewCompact(id),
+		Widgets:   widgets,
+		updater:   widgets,
 		collector: collector,
 	}
 }
 
+func (c *Container) SetUpdater(u cwidgets.WidgetUpdater) {
+	c.updater = u
+	for k, v := range c.Meta {
+		c.updater.SetMeta(k, v)
+	}
+}
+
+func (c *Container) SetMeta(k, v string) {
+	c.Meta[k] = v
+	c.updater.SetMeta(k, v)
+}
+
 func (c *Container) GetMeta(k string) string {
 	if v, ok := c.Meta[k]; ok {
 		return v
@@ -35,26 +47,15 @@ func (c *Container) GetMeta(k string) string {
 	return ""
 }
 
-func (c *Container) SetMeta(k, v string) {
-	c.Meta[k] = v
-	c.Updates <- [2]string{k, v}
-}
-
-func (c *Container) SetName(n string) {
-	c.Name = n
-	c.Widgets.Name.Set(n)
-}
-
 func (c *Container) SetState(s string) {
-	c.State = s
-	c.Widgets.Status.Set(s)
+	c.SetMeta("state", s)
 	// start collector, if needed
-	if c.State == "running" && !c.collector.Running() {
+	if s == "running" && !c.collector.Running() {
 		c.collector.Start()
 		c.Read(c.collector.Stream())
 	}
 	// stop collector, if needed
-	if c.State != "running" && c.collector.Running() {
+	if s != "running" && c.collector.Running() {
 		c.collector.Stop()
 	}
 }
@@ -64,7 +65,7 @@ func (c *Container) Read(stream chan metrics.Metrics) {
 	go func() {
 		for metrics := range stream {
 			c.Metrics = metrics
-			c.Widgets.SetMetrics(metrics)
+			c.updater.SetMetrics(metrics)
 		}
 		log.Infof("reader stopped for container: %s", c.Id)
 		c.Metrics = metrics.NewMetrics()

cwidgets/compact/main.go

@@ -46,6 +46,15 @@ func NewCompact(id string) *Compact {
 //}
 //}
 
+func (row *Compact) SetMeta(k, v string) {
+	switch k {
+	case "name":
+		row.Name.Set(v)
+	case "state":
+		row.Status.Set(v)
+	}
+}
+
 func (row *Compact) SetMetrics(m metrics.Metrics) {
 	row.SetCPU(m.CPUUtil)
 	row.SetNet(m.NetRx, m.NetTx)

cwidgets/main.go

@@ -2,19 +2,12 @@ package cwidgets
 
 import (
 	"github.com/bcicen/ctop/logging"
-	ui "github.com/gizak/termui"
+	"github.com/bcicen/ctop/metrics"
 )
 
 var log = logging.Init()
 
-type ContainerWidgets interface {
-	Buffer() ui.Buffer
-	Highlight()
-	UnHighlight()
-	SetY(int)
-	SetWidth(int)
-	SetStatus(string)
-	SetCPU(int)
-	SetNet(int64, int64)
-	SetMem(int64, int64, int)
+type WidgetUpdater interface {
+	SetMeta(string, string)
+	SetMetrics(metrics.Metrics)
 }

debug.go

@@ -21,7 +21,9 @@ func logEvent(e ui.Event) {
 // log container, metrics, and widget state
 func dumpContainer(c *Container) {
 	msg := fmt.Sprintf("logging state for container: %s\n", c.Id)
-	msg += fmt.Sprintf("Id = %s\nname = %s\nstate = %s\n", c.Id, c.Name, c.State)
+	for k, v := range c.Meta {
+		msg += fmt.Sprintf("Meta.%s = %s\n", k, v)
+	}
 	msg += inspect(&c.Metrics)
 	log.Infof(msg)
 }

dockersource.go

@@ -65,7 +65,7 @@ func (cm *DockerContainerSource) refresh(c *Container) {
 		cm.delByID(c.Id)
 		return
 	}
-	c.SetName(shortName(insp.Name))
+	c.SetMeta("name", shortName(insp.Name))
 	c.SetState(insp.State.Status)
 }
 
@@ -89,7 +89,7 @@ func (cm *DockerContainerSource) refreshAll() {
 
 	for _, i := range allContainers {
 		c := cm.MustGet(i.ID)
-		c.SetName(shortName(i.Names[0]))
+		c.SetMeta("name", shortName(i.Names[0]))
 		c.SetState(i.State)
 		cm.needsRefresh <- c.Id
 	}

grid.go

@@ -1,8 +1,6 @@
 package main
 
 import (
-	"fmt"
-
 	"github.com/bcicen/ctop/config"
 	ui "github.com/gizak/termui"
 )

mocksource.go

@@ -31,7 +31,7 @@ func (cs *MockContainerSource) Init() {
 		time.Sleep(1 * time.Second)
 		collector := metrics.NewMock()
 		c := NewContainer(makeID(), collector)
-		c.SetName(makeName())
+		c.SetMeta("name", makeName())
 		c.SetState(makeState())
 		cs.containers = append(cs.containers, c)
 	}

sort.go

@@ -14,10 +14,11 @@ var stateMap = map[string]int{
 	"paused":  2,
 	"exited":  1,
 	"created": 0,
+	"":        0,
 }
 
 var idSorter = func(c1, c2 *Container) bool { return c1.Id < c2.Id }
-var nameSorter = func(c1, c2 *Container) bool { return c1.Name < c2.Name }
+var nameSorter = func(c1, c2 *Container) bool { return c1.GetMeta("name") < c2.GetMeta("name") }
 
 var Sorters = map[string]sortMethod{
 	"id":   idSorter,
@@ -54,10 +55,12 @@ var Sorters = map[string]sortMethod{
 	},
 	"state": func(c1, c2 *Container) bool {
 		// Use secondary sort method if equal values
-		if c1.State == c2.State {
+		c1state := c1.GetMeta("state")
+		c2state := c2.GetMeta("state")
+		if c1state == c2state {
 			return nameSorter(c1, c2)
 		}
-		return stateMap[c1.State] > stateMap[c2.State]
+		return stateMap[c1state] > stateMap[c2state]
 	},
 }
 
@@ -86,11 +89,11 @@ func (a Containers) Filter() (filtered []*Container) {
 
 	for _, c := range a {
 		// Apply name filter
-		if re.FindAllString(c.Name, 1) == nil {
+		if re.FindAllString(c.GetMeta("name"), 1) == nil {
 			continue
 		}
 		// Apply state filter
-		if !config.GetSwitchVal("allContainers") && c.State != "running" {
+		if !config.GetSwitchVal("allContainers") && c.GetMeta("state") != "running" {
 			continue
 		}
 		filtered = append(filtered, c)