[PCFF-2900] Add optional stage support (#66)

pipeline/builder/builder.go

@@ -690,6 +690,11 @@ func buildStageMetadata(s config.Stage, t string, index int, linear bool) types.
 		}
 	}
 
+	stageEnabled := types.OptionalStageSupport{
+		Expression: s.Condition,
+		Type:"expression",
+	}
+
 	notifications := buildNotifications(s.Notifications)
 	return types.StageMetadata{
 		Name:                 s.Name,
@@ -698,6 +703,7 @@ func buildStageMetadata(s config.Stage, t string, index int, linear bool) types.
 		Type:                 t,
 		Notifications:        notifications,
 		SendNotifications:    (len(notifications) > 0),
+		StageEnabled:         stageEnabled,
 	}
 }
 

pipeline/builder/types/triggers.go

@@ -13,12 +13,13 @@ type TriggerObject struct {
 
 // StageMetadata is the common components of a stage in spinnaker such as name
 type StageMetadata struct {
-	RefID                string         `json:"refId,omitempty"`
-	RequisiteStageRefIds []string       `json:"requisiteStageRefIds"`
-	Name                 string         `json:"name"`
-	Type                 string         `json:"type"`
-	Notifications        []Notification `json:"notifications,omitempty"`
-	SendNotifications    bool           `json:"sendNotifications"`
+	RefID                string               `json:"refId,omitempty"`
+	RequisiteStageRefIds []string             `json:"requisiteStageRefIds"`
+	Name                 string               `json:"name"`
+	Type                 string               `json:"type"`
+	Notifications        []Notification       `json:"notifications,omitempty"`
+	SendNotifications    bool                 `json:"sendNotifications"`
+	StageEnabled         OptionalStageSupport `json:"stageEnabled"`
 }
 
 // JenkinsTrigger constructs the JSON necessary to include a Jenkins trigger

pipeline/builder/types/types.go

@@ -498,3 +498,9 @@ type Webhook struct {
 }
 
 func (whs Webhook) spinnakerStage() {}
+
+// OptionalStageSupport determines if a stage is enabled in the pipeline
+type OptionalStageSupport struct {
+	Expression string `json:"expression"`
+	Type       string `json:"type"`
+}

pipeline/config/config.go

@@ -125,6 +125,7 @@ type Stage struct {
 	RefID         string         `yaml:"refId,omitempty"`
 	ReliesOn      []string       `yaml:"reliesOn,omitempty"`
 	Notifications []Notification `yaml:"notifications,omitempty"`
+	Condition     string         `yaml:"condition,omitempty"`
 
 	// All of the different supported stages, only one may be set
 	RunJob                  *RunJobStage             `yaml:"runJob,omitempty"`