containers: extra labels for name, removing links for multiply named containers

containers.go

@@ -24,6 +24,7 @@ type Container struct {
 type ContainersCommand struct {
 	Dot        bool `short:"d" long:"dot" description:"Show container information as Graphviz dot."`
 	NoTruncate bool `short:"n" long:"no-trunc" description:"Don't truncate the container IDs."`
+	//OnlyRunning bool `short:"r" long:"running" description:"Only show running containers, not Exited"`
 }
 
 var containersCommand ContainersCommand
@@ -81,7 +82,8 @@ func (x *ContainersCommand) Execute(args []string) error {
 	}
 
 	if containersCommand.Dot {
-		fmt.Printf(jsonContainersToDot(containers))
+		//fmt.Printf(jsonContainersToDot(containers, containersCommand.OnlyRunning))
+		fmt.Printf(jsonContainersToDot(containers, true))
 	} else {
 		return fmt.Errorf("Please specify --dot")
 	}
@@ -115,24 +117,49 @@ func parseContainersJSON(rawJSON []byte) (*[]Container, error) {
 	return &containers, nil
 }
 
-func jsonContainersToDot(containers *[]Container) string {
+func jsonContainersToDot(containers *[]Container,OnlyRunning bool) string {
 
 	var buffer bytes.Buffer
 	buffer.WriteString("digraph docker {\n")
 
+	// build list of all primary container names
+	var PrimaryContainerNames map[string]string
+	PrimaryContainerNames = make(map[string]string)
 	for _, container := range *containers {
+		for _, name := range container.Names {
+			if strings.Count(name, "/") == 1 {
+				//fmt.Printf("%s\n",name[1:])
+				PrimaryContainerNames[name[1:]] = name[1:]
+			}
+		}
+	}
+
+	// stores ony first value of link to avoid duplicates
+	var LinkMap map[string]string
+	LinkMap = make(map[string]string)
+
+	for _, container := range *containers {
+		//if OnlyRunning && strings.HasPrefix(container.Status,"Exit") { continue }
 
 		var containerName string
 
+		//fmt.Printf("container status/Names %s/%s\n",container.Status,container.Names)
 		for _, name := range container.Names {
 			if strings.Count(name, "/") == 1 {
 				containerName = name[1:]
 			}
 		}
+	
 		for _, name := range container.Names {
 			nameParts := strings.Split(name, "/")
 			if len(nameParts) > 2 {
-				buffer.WriteString(fmt.Sprintf(" \"%s\" -> \"%s\" [label = \" %s\" ]\n", containerName, nameParts[1], nameParts[len(nameParts)-1]))
+				//fmt.Printf("\t%s to %s\n",containerName,nameParts[1])
+				if IsPrimaryContainerName(containerName,PrimaryContainerNames) && IsPrimaryContainerName(nameParts[1],PrimaryContainerNames) {
+				   if _,ok := LinkMap[containerName + "-" + nameParts[1]]; !ok {
+				    LinkMap[containerName + "-" + nameParts[1]] = "exists"
+				    buffer.WriteString(fmt.Sprintf(" \"%s\" -> \"%s\" [label = \" %s\" ]\n", containerName, nameParts[1], nameParts[len(nameParts)-1] ))
+				  }
+				}
 
 			}
 		}
@@ -144,7 +171,7 @@ func jsonContainersToDot(containers *[]Container) string {
 			containerBackground = "paleturquoise"
 		}
 
-		buffer.WriteString(fmt.Sprintf(" \"%s\" [label=\"%s\\n%s\",shape=box,fillcolor=\"%s\",style=\"filled,rounded\"];\n", containerName, containerName, truncate(container.Id, 12), containerBackground))
+		buffer.WriteString(fmt.Sprintf(" \"%s\" [label=\"%s\\n%s\\n%s\",shape=box,fillcolor=\"%s\",style=\"filled,rounded\"];\n", containerName, container.Image, containerName, truncate(container.Id, 12), containerBackground))
 	}
 
 	buffer.WriteString("}\n")
@@ -152,6 +179,11 @@ func jsonContainersToDot(containers *[]Container) string {
 	return buffer.String()
 }
 
+func IsPrimaryContainerName(Name string,PrimaryContainerNames map[string]string) bool {
+	_,ok := PrimaryContainerNames[Name]
+	return ok
+}
+
 func init() {
 	parser.AddCommand("containers",
 		"Visualize docker containers.",

images.go

@@ -468,7 +468,7 @@ func imagesToDot(buffer *bytes.Buffer, images []Image, byParent map[string][]Ima
 			// show partial command and size to make up for
 			// the fact that since Docker 1.10 content addressing
 			// image ids are usually empty and report as <missing>
-			SanitizedCommand := SanitizeCommand(image.CreatedBy,24)
+			SanitizedCommand := SanitizeCommand(image.CreatedBy,30)
 			buffer.WriteString(fmt.Sprintf(" \"%s\" [label=\"%s\"]\n", truncate(image.Id, 12), truncate(stripPrefix(image.OrigId), 12)+ "\n" + SanitizedCommand + "\n" + humanize.Bytes(uint64(image.Size)) ))
 		}
 		if subimages, exists := byParent[image.Id]; exists {
@@ -511,21 +511,26 @@ func jsonToShort(images *[]Image) string {
 func SanitizeCommand(CommandStr string,MaxLength int) string {
 
 	temp := CommandStr
+
+	// remove prefixes that don't add meaning
 	if(strings.HasPrefix(temp,"/bin/sh -c")) {
 	  temp = strings.TrimSpace(temp[10:])
 	}
 	if(strings.HasPrefix(temp,"#(nop)")) {
 	  temp = strings.TrimSpace(temp[6:])
 	}
-	temp = strings.Replace(temp,"\\"," ",-1)
+
+	// remove double and single quotes which make dot format invalid	
 	temp = strings.Replace(temp,"\""," ",-1)
 	temp = strings.Replace(temp,"'"," ",-1)
-	//temp = strings.Replace(temp,"[","(",-1)
-	//temp = strings.Replace(temp,"]",")",-1)
+
+	// remove double spaces inside
+	temp = strings.Join(strings.Fields(temp)," ")
 
 	return truncate(temp,MaxLength)
 }
 
+
 func init() {
 	parser.AddCommand("images",
 		"Visualize docker images.",