feat: add flagd CRD with ingress support (#633)

Signed-off-by: Florian Bacher <florian.bacher@dynatrace.com>
Co-authored-by: odubajDT <93584209+odubajDT@users.noreply.github.com>

Author: bacherfl

Makefile

@@ -257,7 +257,9 @@ helm-package: set-helm-overlay generate release-manifests helm
 install-mockgen:
 	go install github.com/golang/mock/mockgen@v1.6.0
 mockgen: install-mockgen
-	mockgen -source=controllers/common/flagd-injector.go -destination=controllers/common/mock/flagd-injector.go -package=commonmock
+	mockgen -source=./common/flagdinjector/flagdinjector.go -destination=./common/flagdinjector/mock/flagd-injector.go -package=commonmock
+	mockgen -source=./controllers/core/flagd/controller.go -destination=controllers/core/flagd/mock/mock.go -package=commonmock
+	mockgen -source=./controllers/core/flagd/resources/interface.go -destination=controllers/core/flagd/resources/mock/mock.go -package=commonmock
 
 workspace-init: workspace-clean
 	go work init

PROJECT

@@ -67,4 +67,13 @@ resources:
   kind: FeatureFlagSource
   path: github.com/open-feature/open-feature-operator/apis/core/v1beta1
   version: v1beta1
+- api:
+    crdVersion: v1
+    namespaced: true
+  controller: true
+  domain: openfeature.dev
+  group: core
+  kind: Flagd
+  path: github.com/open-feature/open-feature-operator/apis/core/v1beta1
+  version: v1beta1
 version: "3"

apis/core/v1beta1/flagd_types.go

@@ -0,0 +1,118 @@
+/*
+Copyright 2022.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1beta1
+
+import (
+	v1 "k8s.io/api/core/v1"
+	networkingv1 "k8s.io/api/networking/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+// FlagdSpec defines the desired state of Flagd
+type FlagdSpec struct {
+	// Replicas defines the number of replicas to create for the service.
+	// Default: 1
+	// +optional
+	// +kubebuilder:default=1
+	Replicas *int32 `json:"replicas,omitempty"`
+
+	// ServiceType represents the type of Service to create.
+	// Must be one of: ClusterIP, NodePort, LoadBalancer, and ExternalName.
+	// Default: ClusterIP
+	// +optional
+	// +kubebuilder:default=ClusterIP
+	// +kubebuilder:validation:Enum:=ClusterIP;NodePort;LoadBalancer;ExternalName
+	ServiceType v1.ServiceType `json:"serviceType,omitempty"`
+
+	// ServiceAccountName the service account name for the flagd deployment
+	// +optional
+	ServiceAccountName string `json:"serviceAccountName,omitempty"`
+
+	// FeatureFlagSource references to a FeatureFlagSource from which the created flagd instance retrieves
+	// the feature flag configurations
+	FeatureFlagSource string `json:"featureFlagSource"`
+
+	// Ingress
+	// +optional
+	Ingress IngressSpec `json:"ingress"`
+}
+
+// IngressSpec defines the options to be used when deploying the ingress for flagd
+type IngressSpec struct {
+	// Enabled enables/disables the ingress for flagd
+	Enabled bool `json:"enabled,omitempty"`
+
+	// Annotations the annotations to be added to the ingress
+	// +optional
+	Annotations map[string]string `json:"annotations,omitempty"`
+
+	// Hosts list of hosts to be added to the ingress
+	// +optional
+	Hosts []string `json:"hosts,omitempty"`
+
+	// TLS configuration for the ingress
+	TLS []networkingv1.IngressTLS `json:"tls,omitempty"`
+
+	// IngressClassName defines the name if the ingress class to be used for flagd
+	// +optional
+	IngressClassName *string `json:"ingressClassName,omitempty"`
+
+	// PathType is the path type to be used for the ingress rules
+	// +optional
+	PathType networkingv1.PathType `json:"pathType,omitempty"`
+
+	// FlagdPath is the path to be used for accessing the flagd flag evaluation API
+	// +optional
+	FlagdPath string `json:"flagdPath,omitempty"`
+
+	// OFREPPath is the path to be used for accessing the OFREP API
+	// +optional
+	OFREPPath string `json:"ofrepPath"`
+
+	// SyncPath is the path to be used for accessing the sync API
+	// +optional
+	SyncPath string `json:"syncPath"`
+}
+
+// FlagdStatus defines the observed state of Flagd
+type FlagdStatus struct {
+}
+
+//+kubebuilder:object:root=true
+//+kubebuilder:subresource:status
+
+// Flagd is the Schema for the flagds API
+type Flagd struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Spec   FlagdSpec   `json:"spec,omitempty"`
+	Status FlagdStatus `json:"status,omitempty"`
+}
+
+//+kubebuilder:object:root=true
+
+// FlagdList contains a list of Flagd
+type FlagdList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []Flagd `json:"items"`
+}
+
+func init() {
+	SchemeBuilder.Register(&Flagd{}, &FlagdList{})
+}

apis/core/v1beta1/zz_generated.deepcopy.go

@@ -4,3 +4,4 @@ templates/crds/*.yaml
 # the following files are not generated, they are special cases
 !templates/namespace.yaml
 !templates/admissionregistration.k8s.io_v1_validatingwebhookconfiguration_open-feature-operator-validating-webhook-configuration.yaml
+!templates/rbac.authorization.k8s.io_v1_clusterrole_open-feature-operator-manager-role.yaml