Update topology to include tag

Tag can be used to specify the sub-shape for the given node.

Signed-off-by: Akash Srivastava <akash.srivastava@openebs.io>

report/report.go

@@ -44,6 +44,7 @@ const (
 	Cylinder       = "cylinder"
 	DottedCylinder = "dottedcylinder"
 	StorageSheet   = "sheet"
+	Camera         = "camera"
 
 	// Used when counting the number of containers
 	ContainersKey = "containers"

report/topology.go

@@ -10,6 +10,7 @@ import (
 // in the Node struct.
 type Topology struct {
 	Shape             string            `json:"shape,omitempty"`
+	Tag               string            `json:"tag,omitempty"`
 	Label             string            `json:"label,omitempty"`
 	LabelPlural       string            `json:"label_plural,omitempty"`
 	Nodes             Nodes             `json:"nodes"`
@@ -32,6 +33,7 @@ func MakeTopology() Topology {
 func (t Topology) WithMetadataTemplates(other MetadataTemplates) Topology {
 	return Topology{
 		Shape:             t.Shape,
+		Tag:               t.Tag,
 		Label:             t.Label,
 		LabelPlural:       t.LabelPlural,
 		Nodes:             t.Nodes.Copy(),
@@ -47,6 +49,7 @@ func (t Topology) WithMetadataTemplates(other MetadataTemplates) Topology {
 func (t Topology) WithMetricTemplates(other MetricTemplates) Topology {
 	return Topology{
 		Shape:             t.Shape,
+		Tag:               t.Tag,
 		Label:             t.Label,
 		LabelPlural:       t.LabelPlural,
 		Nodes:             t.Nodes.Copy(),
@@ -62,6 +65,7 @@ func (t Topology) WithMetricTemplates(other MetricTemplates) Topology {
 func (t Topology) WithTableTemplates(other TableTemplates) Topology {
 	return Topology{
 		Shape:             t.Shape,
+		Tag:               t.Tag,
 		Label:             t.Label,
 		LabelPlural:       t.LabelPlural,
 		Nodes:             t.Nodes.Copy(),
@@ -76,6 +80,22 @@ func (t Topology) WithTableTemplates(other TableTemplates) Topology {
 func (t Topology) WithShape(shape string) Topology {
 	return Topology{
 		Shape:             shape,
+		Tag:               t.Tag,
+		Label:             t.Label,
+		LabelPlural:       t.LabelPlural,
+		Nodes:             t.Nodes.Copy(),
+		Controls:          t.Controls.Copy(),
+		MetadataTemplates: t.MetadataTemplates.Copy(),
+		MetricTemplates:   t.MetricTemplates.Copy(),
+		TableTemplates:    t.TableTemplates.Copy(),
+	}
+}
+
+// WithTag sets the tag of nodes from this topology, returning a new topology.
+func (t Topology) WithTag(tag string) Topology {
+	return Topology{
+		Shape:             t.Shape,
+		Tag:               tag,
 		Label:             t.Label,
 		LabelPlural:       t.LabelPlural,
 		Nodes:             t.Nodes.Copy(),
@@ -90,6 +110,7 @@ func (t Topology) WithShape(shape string) Topology {
 func (t Topology) WithLabel(label, labelPlural string) Topology {
 	return Topology{
 		Shape:             t.Shape,
+		Tag:               t.Tag,
 		Label:             label,
 		LabelPlural:       labelPlural,
 		Nodes:             t.Nodes.Copy(),
@@ -130,6 +151,7 @@ func (t Topology) GetShape() string {
 func (t Topology) Copy() Topology {
 	return Topology{
 		Shape:             t.Shape,
+		Tag:               t.Tag,
 		Label:             t.Label,
 		LabelPlural:       t.LabelPlural,
 		Nodes:             t.Nodes.Copy(),
@@ -151,8 +173,13 @@ func (t Topology) Merge(other Topology) Topology {
 	if label == "" {
 		label, labelPlural = other.Label, other.LabelPlural
 	}
+	tag := t.Tag
+	if tag == "" {
+		tag = other.Tag
+	}
 	return Topology{
 		Shape:             shape,
+		Tag:               tag,
 		Label:             label,
 		LabelPlural:       labelPlural,
 		Nodes:             t.Nodes.Merge(other.Nodes),
@@ -171,6 +198,9 @@ func (t *Topology) UnsafeMerge(other Topology) {
 	if t.Label == "" {
 		t.Label, t.LabelPlural = other.Label, other.LabelPlural
 	}
+	if t.Tag == "" {
+		t.Tag = other.Tag
+	}
 	t.Nodes.UnsafeMerge(other.Nodes)
 	t.Controls = t.Controls.Merge(other.Controls)
 	t.MetadataTemplates = t.MetadataTemplates.Merge(other.MetadataTemplates)