introduced scheduler-api, modified PodGangSet API, re-generated code and client (#25)

Signed-off-by: Madhav Bhargava <madhav.bhargava@sap.com>

Author: unmarshall

.gitignore

@@ -34,7 +34,9 @@ operator/hack/tools/*
 operator/hack/kind/*
 operator/charts/crds/*
 scheduler-plugins/hack/tools/*
+scheduler-api/hack/tools/*
 
 # binary directory for locally produced dev scheduler binaries
 operator/bin/*
 scheduler-plugins/bin/*
+scheduler-api/bin/*

operator/api/core/crds/embed.go

@@ -9,12 +9,12 @@ var (
 	podGangSetCRD string
 )
 
-// PodCliqueCRD returns the embedded PodClique CRD
+// PodCliqueCRD returns the PodClique CRD
 func PodCliqueCRD() string {
 	return podCliqueCRD
 }
 
-// PodGangSetCRD returns the embedded PodGangSet CRD
+// PodGangSetCRD returns the PodGangSet CRD
 func PodGangSetCRD() string {
 	return podGangSetCRD
 }

operator/api/core/crds/grove.io_podcliques.yaml

@@ -39,10 +39,6 @@ type PodCliqueSpec struct {
 	Spec corev1.PodSpec `json:"spec"`
 	// Replicas is the number of replicas of the pods in the clique.
 	Replicas int32 `json:"replicas"`
-	// MinAvailable is the minimum number of pods that must be available at any given time.
-	// If it is not specified then it will be defaulted to spec.Replicas for the PodClique.
-	// +optional
-	MinAvailable *int32 `json:"minAvailable"`
 	// StartsAfter provides you a way to explicitly define the startup dependencies amongst cliques.
 	// If CliqueStartupType in PodGang has been set to 'CliqueStartupTypeExplicit', then to create an ordered start amongst PorClique's StartsAfter can be used.
 	// A forest of DAG's can be defined to model any start order dependencies. If there are more than one PodClique's defined and StartsAfter is not set for any of them,
@@ -52,9 +48,32 @@ type PodCliqueSpec struct {
 	// 2. If StartsAfter is defined and does not identify any PodClique then it will be flagged as a validation error.
 	// +optional
 	StartsAfter []string `json:"startsAfter,omitempty"`
-	// HPAConfig is the horizontal pod autoscaler configuration for a PodClique.
+	// ScaleConfig is the horizontal pod autoscaler configuration for a PodClique.
+	// +optional
+	ScaleConfig *AutoScalingConfig `json:"autoScalingConfig,omitempty"`
+}
+
+// AutoScalingConfig defines the configuration for the horizontal pod autoscaler for a PodClique.
+type AutoScalingConfig struct {
+	// minReplicas is the lower limit for the number of replicas to which the autoscaler
+	// can scale down. It defaults to 1 pod. minReplicas is not allowed to be 0.
+	// Scaling is active as long as at least one metric value is available.
+	// +optional
+	MinReplicas *int32 `json:"minReplicas,omitempty"`
+	// maxReplicas is the upper limit for the number of replicas to which the autoscaler can scale up.
+	// It cannot be less that minReplicas.
+	MaxReplicas int32 `json:"maxReplicas"`
+	// Metrics contains the specifications for which to use to calculate the
+	// desired replica count (the maximum replica count across all metrics will
+	// be used).  The desired replica count is calculated multiplying the
+	// ratio between the target value and the current value by the current
+	// number of pods.  Ergo, metrics used must decrease as the pod count is
+	// increased, and vice versa.  See the individual metric source types for
+	// more information about how each type of metric must respond.
+	// If not set, the default metric will be set to 80% average CPU utilization.
+	// +listType=atomic
 	// +optional
-	HPAConfig *autoscalingv2.HorizontalPodAutoscalerSpec `json:"hpaConfig,omitempty"`
+	Metrics []autoscalingv2.MetricSpec `json:"metrics,omitempty" protobuf:"bytes,4,rep,name=metrics"`
 }
 
 // PodCliqueStatus defines the status of a PodClique.

operator/api/core/crds/grove.io_podgangsets.yaml

@@ -13,14 +13,14 @@ import (
 // +kubebuilder:subresource:scale:specpath=.spec.replicas,statuspath=.status.replicas,selectorpath=.status.hpaPodSelector
 // +kubebuilder:resource:shortName={pgs}
 
-// PodGangSet is a set of PodGangs defining specification on how to spread and manage PodGangs and monitoring their status.
+// PodGangSet is a set of PodGangs defining specification on how to spread and manage a gang of pods and monitoring their status.
 type PodGangSet struct {
 	metav1.TypeMeta   `json:",inline"`
 	metav1.ObjectMeta `json:",inline"`
 	// Spec defines the specification of the PodGangSet.
 	Spec PodGangSetSpec `json:"spec"`
 	// Status defines the status of the PodGangSet.
-	Status PodGangSetStatus `json:"status"`
+	Status PodGangSetStatus `json:"status,omitempty"`
 }
 
 // +kubebuilder:object:root=true