Enable controller and webhook for TargetAllocator CR (#3426)

* Enable controller and webhook for TargetAllocator CR

# Conflicts:
#	bundle/community/manifests/opentelemetry-operator.clusterserviceversion.yaml
#	bundle/openshift/manifests/opentelemetry-operator.clusterserviceversion.yaml

# Conflicts:
#	bundle/community/manifests/opentelemetry-operator.clusterserviceversion.yaml
#	bundle/openshift/manifests/opentelemetry-operator.clusterserviceversion.yaml

* Add documentation about the TA CRD

* Update controllers/targetallocator_controller.go

Co-authored-by: Jacob Aronoff <[email protected]>

* Apply suggestions from code review

Co-authored-by: Jacob Aronoff <[email protected]>

* Fix e2e test

* Use TA CRD only if it's available

This way we won't break installations which don't have the new CRD yet
for whatever reason.

---------

Co-authored-by: Jacob Aronoff <[email protected]>

Author: swiatekm

.chloggen/feat_enable-ta-crd.yaml

@@ -0,0 +1,16 @@
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: new_component
+
+# The name of the component, or a single word describing the area of concern, (e.g. collector, target allocator, auto-instrumentation, opamp, github action)
+component: target allocator
+
+# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Introduce TargetAllocator CRD
+
+# One or more tracking issues related to the change
+issues: [2422]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext: See the [CRD changelog](./docs/crd-changelog.md) for more information.

PROJECT

@@ -42,4 +42,16 @@ resources:
     defaulting: true
     validation: true
     webhookVersion: v1
+- api:
+    crdVersion: v1
+    namespaced: true
+  controller: true
+  domain: opentelemetry.io
+  kind: TargetAllocator
+  path: github.com/open-telemetry/opentelemetry-operator/apis/v1alpha1
+  version: v1alpha1
+  webhooks:
+    defaulting: true
+    validation: true
+    webhookVersion: v1
 version: "3"

apis/v1alpha1/targetallocator_types.go

@@ -24,9 +24,13 @@ func init() {
 	SchemeBuilder.Register(&TargetAllocator{}, &TargetAllocatorList{})
 }
 
-//+kubebuilder:object:root=true
-//+kubebuilder:storageversion
-//+kubebuilder:subresource:status
+// +kubebuilder:object:root=true
+// +kubebuilder:subresource:status
+// +kubebuilder:printcolumn:name="Age",type="date",JSONPath=".metadata.creationTimestamp"
+// +kubebuilder:printcolumn:name="Image",type="string",JSONPath=".status.image"
+// +kubebuilder:printcolumn:name="Management",type="string",JSONPath=".spec.managementState",description="Management State"
+// +operator-sdk:csv:customresourcedefinitions:displayName="Target Allocator"
+// +operator-sdk:csv:customresourcedefinitions:resources={{Pod,v1},{Deployment,apps/v1},{ConfigMaps,v1},{Service,v1},{ServiceAccount,v1},{PodDisruptionBudget,policy/v1}}
 
 // TargetAllocator is the Schema for the targetallocators API.
 type TargetAllocator struct {
@@ -37,7 +41,7 @@ type TargetAllocator struct {
 	Status TargetAllocatorStatus `json:"status,omitempty"`
 }
 
-//+kubebuilder:object:root=true
+// +kubebuilder:object:root=true
 
 // TargetAllocatorList contains a list of TargetAllocator.
 type TargetAllocatorList struct {

apis/v1alpha1/targetallocator_webhook.go

@@ -35,10 +35,9 @@ var (
 	_ admission.CustomDefaulter = &TargetAllocatorWebhook{}
 )
 
-// TODO: Uncomment this webhook after enabling the TargetAllocator controller
-// //+kubebuilder:webhook:path=/mutate-opentelemetry-io-v1beta1-targetallocator,mutating=true,failurePolicy=fail,groups=opentelemetry.io,resources=targetallocators,verbs=create;update,versions=v1beta1,name=mtargetallocatorbeta.kb.io,sideEffects=none,admissionReviewVersions=v1
-// //+kubebuilder:webhook:verbs=create;update,path=/validate-opentelemetry-io-v1beta1-targetallocator,mutating=false,failurePolicy=fail,groups=opentelemetry.io,resources=targetallocators,versions=v1beta1,name=vtargetallocatorcreateupdatebeta.kb.io,sideEffects=none,admissionReviewVersions=v1
-// //+kubebuilder:webhook:verbs=delete,path=/validate-opentelemetry-io-v1beta1-targetallocator,mutating=false,failurePolicy=ignore,groups=opentelemetry.io,resources=targetallocators,versions=v1beta1,name=vtargetallocatordeletebeta.kb.io,sideEffects=none,admissionReviewVersions=v1
+// +kubebuilder:webhook:path=/mutate-opentelemetry-io-v1beta1-targetallocator,mutating=true,failurePolicy=fail,groups=opentelemetry.io,resources=targetallocators,verbs=create;update,versions=v1beta1,name=mtargetallocatorbeta.kb.io,sideEffects=none,admissionReviewVersions=v1
+// +kubebuilder:webhook:verbs=create;update,path=/validate-opentelemetry-io-v1beta1-targetallocator,mutating=false,failurePolicy=fail,groups=opentelemetry.io,resources=targetallocators,versions=v1beta1,name=vtargetallocatorcreateupdatebeta.kb.io,sideEffects=none,admissionReviewVersions=v1
+// +kubebuilder:webhook:verbs=delete,path=/validate-opentelemetry-io-v1beta1-targetallocator,mutating=false,failurePolicy=ignore,groups=opentelemetry.io,resources=targetallocators,versions=v1beta1,name=vtargetallocatordeletebeta.kb.io,sideEffects=none,admissionReviewVersions=v1
 // +kubebuilder:object:generate=false
 
 type TargetAllocatorWebhook struct {

bundle/community/manifests/opentelemetry-operator.clusterserviceversion.yaml

@@ -99,7 +99,7 @@ metadata:
     categories: Logging & Tracing,Monitoring
     certified: "false"
     containerImage: ghcr.io/open-telemetry/opentelemetry-operator/opentelemetry-operator
-    createdAt: "2025-01-22T10:41:17Z"
+    createdAt: "2025-01-24T11:36:07Z"
     description: Provides the OpenTelemetry components, including the Collector
     operators.operatorframework.io/builder: operator-sdk-v1.29.0
     operators.operatorframework.io/project_layout: go.kubebuilder.io/v3
@@ -241,6 +241,52 @@ spec:
         displayName: Create ServiceMonitors for OpenTelemetry Collector
         path: targetAllocator.observability.metrics.enableMetrics
       version: v1beta1
+    - description: TargetAllocator is the Schema for the targetallocators API.
+      displayName: Target Allocator
+      kind: TargetAllocator
+      name: targetallocators.opentelemetry.io
+      resources:
+      - kind: ConfigMaps
+        name: ""
+        version: v1
+      - kind: Deployment
+        name: ""
+        version: apps/v1
+      - kind: Pod
+        name: ""
+        version: v1
+      - kind: PodDisruptionBudget
+        name: ""
+        version: policy/v1
+      - kind: Service
+        name: ""
+        version: v1
+      - kind: ServiceAccount
+        name: ""
+        version: v1
+      specDescriptors:
+      - description: ObservabilitySpec defines how telemetry data gets handled.
+        displayName: Observability
+        path: observability
+      - description: Metrics defines the metrics configuration for operands.
+        displayName: Metrics Config
+        path: observability.metrics
+      - description: Metrics defines the metrics configuration for operands.
+        displayName: Metrics Config
+        path: observability.metrics
+      - description: EnableMetrics specifies if ServiceMonitor or PodMonitor(for sidecar
+          mode) should be created for the service managed by the OpenTelemetry Operator.
+          The operator.observability.prometheus feature gate must be enabled to use
+          this feature.
+        displayName: Create ServiceMonitors for OpenTelemetry Collector
+        path: observability.metrics.enableMetrics
+      - description: EnableMetrics specifies if ServiceMonitor or PodMonitor(for sidecar
+          mode) should be created for the service managed by the OpenTelemetry Operator.
+          The operator.observability.prometheus feature gate must be enabled to use
+          this feature.
+        displayName: Create ServiceMonitors for OpenTelemetry Collector
+        path: observability.metrics.enableMetrics
+      version: v1alpha1
   description: |-
     OpenTelemetry is a collection of tools, APIs, and SDKs. You use it to instrument, generate, collect, and export telemetry data (metrics, logs, and traces) for analysis in order to understand your software's performance and behavior.
 
@@ -684,6 +730,26 @@ spec:
     targetPort: 9443
     type: MutatingAdmissionWebhook
     webhookPath: /mutate-v1-pod
+  - admissionReviewVersions:
+    - v1
+    containerPort: 443
+    deploymentName: opentelemetry-operator-controller-manager
+    failurePolicy: Fail
+    generateName: mtargetallocatorbeta.kb.io
+    rules:
+    - apiGroups:
+      - opentelemetry.io
+      apiVersions:
+      - v1beta1
+      operations:
+      - CREATE
+      - UPDATE
+      resources:
+      - targetallocators
+    sideEffects: None
+    targetPort: 9443
+    type: MutatingAdmissionWebhook
+    webhookPath: /mutate-opentelemetry-io-v1beta1-targetallocator
   - admissionReviewVersions:
     - v1
     containerPort: 443
@@ -801,3 +867,42 @@ spec:
     targetPort: 9443
     type: ValidatingAdmissionWebhook
     webhookPath: /validate-opentelemetry-io-v1beta1-opentelemetrycollector
+  - admissionReviewVersions:
+    - v1
+    containerPort: 443
+    deploymentName: opentelemetry-operator-controller-manager
+    failurePolicy: Fail
+    generateName: vtargetallocatorcreateupdatebeta.kb.io
+    rules:
+    - apiGroups:
+      - opentelemetry.io
+      apiVersions:
+      - v1beta1
+      operations:
+      - CREATE
+      - UPDATE
+      resources:
+      - targetallocators
+    sideEffects: None
+    targetPort: 9443
+    type: ValidatingAdmissionWebhook
+    webhookPath: /validate-opentelemetry-io-v1beta1-targetallocator
+  - admissionReviewVersions:
+    - v1
+    containerPort: 443
+    deploymentName: opentelemetry-operator-controller-manager
+    failurePolicy: Ignore
+    generateName: vtargetallocatordeletebeta.kb.io
+    rules:
+    - apiGroups:
+      - opentelemetry.io
+      apiVersions:
+      - v1beta1
+      operations:
+      - DELETE
+      resources:
+      - targetallocators
+    sideEffects: None
+    targetPort: 9443
+    type: ValidatingAdmissionWebhook
+    webhookPath: /validate-opentelemetry-io-v1beta1-targetallocator