feat: 初始化 controller 状态机

api/v1alpha1/condition_types.go

@@ -0,0 +1,34 @@
+/*
+Copyright 2026.
+
+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 v1alpha1
+
+const (
+	// ConditionTypeReady is the stable condition consumers use for readiness.
+	ConditionTypeReady = "Ready"
+
+	ReasonReconciling                = "Reconciling"
+	ReasonReady                      = "Ready"
+	ReasonInvalidSpec                = "InvalidSpec"
+	ReasonImmutableField             = "ImmutableField"
+	ReasonDependencyUnavailable      = "DependencyUnavailable"
+	ReasonAuthenticationFailed       = "AuthenticationFailed"
+	ReasonInsufficientPrivileges     = "InsufficientPrivileges"
+	ReasonInstanceNotReady           = "InstanceNotReady"
+	ReasonConflict                   = "Conflict"
+	ReasonProvisioningFailed         = "ProvisioningFailed"
+	ReasonCredentialProjectionFailed = "CredentialProjectionFailed"
+)

internal/controller/postgresqlinstance_controller.go

@@ -18,7 +18,9 @@ package controller
 
 import (
 	"context"
+	"reflect"
 
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/runtime"
 	ctrl "sigs.k8s.io/controller-runtime"
 	"sigs.k8s.io/controller-runtime/pkg/client"
@@ -47,9 +49,30 @@ type PostgreSQLInstanceReconciler struct {
 // For more details, check Reconcile and its Result here:
 // - https://pkg.go.dev/sigs.k8s.io/[email protected]/pkg/reconcile
 func (r *PostgreSQLInstanceReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
-	_ = logf.FromContext(ctx)
+	logger := logf.FromContext(ctx)
+	instance := &databasev1alpha1.PostgreSQLInstance{}
+	if err := r.Get(ctx, req.NamespacedName, instance); err != nil {
+		return ctrl.Result{}, client.IgnoreNotFound(err)
+	}
 
-	// TODO(user): your logic here
+	before := instance.DeepCopy()
+
+	if !instance.DeletionTimestamp.IsZero() {
+		instance.Status.Phase = databasev1alpha1.PostgreSQLInstancePhaseDeleting
+		setReconcilingCondition(&instance.Status.Conditions, instance.Generation, "instance deletion is reconciling")
+	} else if instance.Status.Phase == "" {
+		instance.Status.Phase = databasev1alpha1.PostgreSQLInstancePhaseValidating
+		setReconcilingCondition(&instance.Status.Conditions, instance.Generation, "instance dependencies are being validated")
+	}
+
+	if !reflect.DeepEqual(before.Status, instance.Status) {
+		if err := r.Status().Patch(ctx, instance, client.MergeFrom(before)); err != nil {
+			if apierrors.IsConflict(err) {
+				logger.V(1).Info("instance status changed concurrently; retrying")
+			}
+			return ctrl.Result{}, err
+		}
+	}
 
 	return ctrl.Result{}, nil
 }

internal/controller/postgresqlinstance_controller_test.go

@@ -85,8 +85,21 @@ var _ = Describe("PostgreSQLInstance Controller", func() {
 				NamespacedName: typeNamespacedName,
 			})
 			Expect(err).NotTo(HaveOccurred())
-			// TODO(user): Add more specific assertions depending on your controller's reconciliation logic.
-			// Example: If you expect a certain status condition after reconciliation, verify it here.
+			actual := &databasev1alpha1.PostgreSQLInstance{}
+			Expect(k8sClient.Get(ctx, typeNamespacedName, actual)).To(Succeed())
+			Expect(actual.Status.Phase).To(Equal(databasev1alpha1.PostgreSQLInstancePhaseValidating))
+			Expect(actual.Status.Conditions).To(ConsistOf(And(
+				HaveField("Type", databasev1alpha1.ConditionTypeReady),
+				HaveField("Status", metav1.ConditionUnknown),
+				HaveField("Reason", databasev1alpha1.ReasonReconciling),
+				HaveField("ObservedGeneration", actual.Generation),
+			)))
+
+			resourceVersion := actual.ResourceVersion
+			_, err = controllerReconciler.Reconcile(ctx, reconcile.Request{NamespacedName: typeNamespacedName})
+			Expect(err).NotTo(HaveOccurred())
+			Expect(k8sClient.Get(ctx, typeNamespacedName, actual)).To(Succeed())
+			Expect(actual.ResourceVersion).To(Equal(resourceVersion), "an unchanged status must not be patched")
 		})
 	})
 })

internal/controller/postgresqltenant_controller.go

@@ -18,7 +18,9 @@ package controller
 
 import (
 	"context"
+	"reflect"
 
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/runtime"
 	ctrl "sigs.k8s.io/controller-runtime"
 	"sigs.k8s.io/controller-runtime/pkg/client"
@@ -47,9 +49,29 @@ type PostgreSQLTenantReconciler struct {
 // For more details, check Reconcile and its Result here:
 // - https://pkg.go.dev/sigs.k8s.io/[email protected]/pkg/reconcile
 func (r *PostgreSQLTenantReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
-	_ = logf.FromContext(ctx)
+	logger := logf.FromContext(ctx)
+	tenant := &databasev1alpha1.PostgreSQLTenant{}
+	if err := r.Get(ctx, req.NamespacedName, tenant); err != nil {
+		return ctrl.Result{}, client.IgnoreNotFound(err)
+	}
 
-	// TODO(user): your logic here
+	before := tenant.DeepCopy()
+	if !tenant.DeletionTimestamp.IsZero() {
+		tenant.Status.Phase = databasev1alpha1.PostgreSQLTenantPhaseDeleting
+		setReconcilingCondition(&tenant.Status.Conditions, tenant.Generation, "tenant deletion is reconciling")
+	} else if tenant.Status.Phase == "" {
+		tenant.Status.Phase = databasev1alpha1.PostgreSQLTenantPhasePending
+		setReconcilingCondition(&tenant.Status.Conditions, tenant.Generation, "tenant is waiting for its instance")
+	}
+
+	if !reflect.DeepEqual(before.Status, tenant.Status) {
+		if err := r.Status().Patch(ctx, tenant, client.MergeFrom(before)); err != nil {
+			if apierrors.IsConflict(err) {
+				logger.V(1).Info("tenant status changed concurrently; retrying")
+			}
+			return ctrl.Result{}, err
+		}
+	}
 
 	return ctrl.Result{}, nil
 }

internal/controller/postgresqltenant_controller_test.go

@@ -82,8 +82,22 @@ var _ = Describe("PostgreSQLTenant Controller", func() {
 				NamespacedName: typeNamespacedName,
 			})
 			Expect(err).NotTo(HaveOccurred())
-			// TODO(user): Add more specific assertions depending on your controller's reconciliation logic.
-			// Example: If you expect a certain status condition after reconciliation, verify it here.
+
+			actual := &databasev1alpha1.PostgreSQLTenant{}
+			Expect(k8sClient.Get(ctx, typeNamespacedName, actual)).To(Succeed())
+			Expect(actual.Status.Phase).To(Equal(databasev1alpha1.PostgreSQLTenantPhasePending))
+			Expect(actual.Status.Conditions).To(ConsistOf(And(
+				HaveField("Type", databasev1alpha1.ConditionTypeReady),
+				HaveField("Status", metav1.ConditionUnknown),
+				HaveField("Reason", databasev1alpha1.ReasonReconciling),
+				HaveField("ObservedGeneration", actual.Generation),
+			)))
+
+			resourceVersion := actual.ResourceVersion
+			_, err = controllerReconciler.Reconcile(ctx, reconcile.Request{NamespacedName: typeNamespacedName})
+			Expect(err).NotTo(HaveOccurred())
+			Expect(k8sClient.Get(ctx, typeNamespacedName, actual)).To(Succeed())
+			Expect(actual.ResourceVersion).To(Equal(resourceVersion), "an unchanged status must not be patched")
 		})
 	})
 })

internal/controller/status.go

@@ -0,0 +1,34 @@
+/*
+Copyright 2026.
+
+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 controller
+
+import (
+	apiMeta "k8s.io/apimachinery/pkg/api/meta"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	databasev1alpha1 "git.ddupan.top/panxiao81/postgresql-tenant-operator/api/v1alpha1"
+)
+
+func setReconcilingCondition(conditions *[]metav1.Condition, generation int64, message string) {
+	apiMeta.SetStatusCondition(conditions, metav1.Condition{
+		Type:               databasev1alpha1.ConditionTypeReady,
+		Status:             metav1.ConditionUnknown,
+		ObservedGeneration: generation,
+		Reason:             databasev1alpha1.ReasonReconciling,
+		Message:            message,
+	})
+}