add dumpContainer debug method, keybinding

debug.go

@@ -0,0 +1,20 @@
+package main
+
+import (
+	"fmt"
+	"reflect"
+)
+
+func inspect(i interface{}) (s string) {
+	val := reflect.ValueOf(i)
+	elem := val.Type().Elem()
+
+	eName := elem.String()
+	for i := 0; i < elem.NumField(); i++ {
+		field := elem.Field(i)
+		fieldVal := reflect.Indirect(val).FieldByName(field.Name)
+		s += fmt.Sprintf("%s.%s = ", eName, field.Name)
+		s += fmt.Sprintf("%v (%s)\n", fieldVal, field.Type)
+	}
+	return s
+}

grid.go

@@ -122,6 +122,15 @@ func (g *Grid) redrawRows() {
 	ui.Render(cGrid)
 }
 
+// Log current container and widget state
+func (g *Grid) dumpContainer() {
+	c, _ := g.cSource.Get(g.cursorID)
+	msg := fmt.Sprintf("logging state for container: %s\n", c.ShortID())
+	msg += fmt.Sprintf("id = %s\nname = %s\nstate = %s\n", c.id, c.name, c.state)
+	msg += inspect(&c.metrics)
+	log.Infof(msg)
+}
+
 func (g *Grid) ExpandView() {
 	ui.Clear()
 	ui.DefaultEvtStream.ResetHandlers()
@@ -142,6 +151,7 @@ func (g *Grid) ExpandView() {
 	ui.Loop()
 
 	container.widgets = curWidgets
+	container.widgets.Reset()
 }
 
 func logEvent(e ui.Event) {
@@ -178,6 +188,9 @@ func Display(g *Grid) bool {
 		config.Toggle("allContainers")
 		g.redrawRows()
 	})
+	ui.Handle("/sys/kbd/D", func(ui.Event) {
+		g.dumpContainer()
+	})
 	ui.Handle("/sys/kbd/f", func(ui.Event) {
 		menu = FilterMenu
 		ui.StopLoop()