Feat/implement service spec (#124)

Fixes #115 
Fixes #166

api/v1alpha1/etcdcluster_types.go

@@ -37,6 +37,12 @@ type EtcdClusterSpec struct {
 	Options map[string]string `json:"options,omitempty"`
 	// PodTemplate defines the desired state of PodSpec for etcd members. If not specified, default values will be used.
 	PodTemplate PodTemplate `json:"podTemplate,omitempty"`
+	// Service defines the desired state of Service for etcd members. If not specified, default values will be used.
+	// +optional
+	ServiceTemplate *EmbeddedService `json:"serviceTemplate,omitempty"`
+	// HeadlessService defines the desired state of HeadlessService for etcd members. If not specified, default values will be used.
+	// +optional
+	HeadlessServiceTemplate *EmbeddedMetadataResource `json:"headlessServiceTemplate,omitempty"`
 	// PodDisruptionBudgetTemplate describes PDB resource to create for etcd cluster members. Nil to disable.
 	// +optional
 	PodDisruptionBudgetTemplate *EmbeddedPodDisruptionBudget `json:"podDisruptionBudgetTemplate,omitempty"`
@@ -128,6 +134,15 @@ type EmbeddedObjectMetadata struct {
 	Annotations map[string]string `json:"annotations,omitempty" protobuf:"bytes,12,rep,name=annotations"`
 }
 
+// ToObjectMeta converts EmbeddedObjectMetadata to metav1.ObjectMeta
+func (r *EmbeddedObjectMetadata) ToObjectMeta() metav1.ObjectMeta {
+	return metav1.ObjectMeta{
+		Name:        r.Name,
+		Labels:      r.Labels,
+		Annotations: r.Annotations,
+	}
+}
+
 // PodTemplate allows overrides, such as sidecars, init containers, changes to the security context, etc to the pod template generated by the operator.
 type PodTemplate struct {
 	// EmbeddedObjectMetadata contains metadata relevant to an EmbeddedResource
@@ -226,6 +241,21 @@ type PodDisruptionBudgetSpec struct {
 	MaxUnavailable *intstr.IntOrString `json:"maxUnavailable,omitempty"`
 }
 
+type EmbeddedService struct {
+	// EmbeddedMetadata contains metadata relevant to an EmbeddedResource.
+	// +optional
+	EmbeddedObjectMetadata `json:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`
+	// Spec defines the behavior of the service.
+	// +optional
+	Spec corev1.ServiceSpec `json:"spec,omitempty" protobuf:"bytes,2,opt,name=spec"`
+}
+
+type EmbeddedMetadataResource struct {
+	// EmbeddedMetadata contains metadata relevant to an EmbeddedResource.
+	// +optional
+	EmbeddedObjectMetadata `json:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`
+}
+
 func init() {
 	SchemeBuilder.Register(&EtcdCluster{}, &EtcdClusterList{})
 }