PostgreSQL CREATE SCHEMA support (#181)

* Schema controller for PostgreSQL

This adds support for CREATE SCHEMA (not any DDL like Schema hero).
This is needed to run third party solutions that require the schema
to exist, like grafana operator and temporal operator.

Co-authored-by: Lars Haugan <456305+larhauga@users.noreply.github.com>
Signed-off-by: Carl Henrik Lunde <chlunde@ifi.uio.no>

* Generate files for PostgreSQL Schema

Signed-off-by: Carl Henrik Lunde <chlunde@ifi.uio.no>

* Expand PostgreSQL config example to include secret and ssl mode, docker info

Signed-off-by: Carl Henrik Lunde <chlunde@ifi.uio.no>

* Avoid new(string) and use nicer ptr.To values in test

Signed-off-by: Carl Henrik Lunde <chlunde@ifi.uio.no>

---------

Signed-off-by: Carl Henrik Lunde <chlunde@ifi.uio.no>
Co-authored-by: Lars Haugan <456305+larhauga@users.noreply.github.com>

apis/postgresql/v1alpha1/register.go

@@ -90,11 +90,20 @@ var (
 	GrantGroupVersionKind = SchemeGroupVersion.WithKind(GrantKind)
 )
 
+// Schema type metadata.
+var (
+	SchemaKind             = reflect.TypeOf(Schema{}).Name()
+	SchemaGroupKind        = schema.GroupKind{Group: Group, Kind: SchemaKind}.String()
+	SchemaKindAPIVersion   = SchemaKind + "." + SchemeGroupVersion.String()
+	SchemaGroupVersionKind = SchemeGroupVersion.WithKind(SchemaKind)
+)
+
 func init() {
 	SchemeBuilder.Register(&ProviderConfig{}, &ProviderConfigList{})
 	SchemeBuilder.Register(&ProviderConfigUsage{}, &ProviderConfigUsageList{})
 	SchemeBuilder.Register(&Database{}, &DatabaseList{})
 	SchemeBuilder.Register(&Role{}, &RoleList{})
 	SchemeBuilder.Register(&Grant{}, &GrantList{})
 	SchemeBuilder.Register(&Extension{}, &ExtensionList{})
+	SchemeBuilder.Register(&Schema{}, &SchemaList{})
 }

apis/postgresql/v1alpha1/schema_types.go

@@ -0,0 +1,94 @@
+/*
+Copyright 2024 The Crossplane Authors.
+
+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
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	xpv1 "github.com/crossplane/crossplane-runtime/apis/common/v1"
+)
+
+// A SchemaSpec defines the desired state of a Schema.
+type SchemaSpec struct {
+	xpv1.ResourceSpec `json:",inline"`
+	ForProvider       SchemaParameters `json:"forProvider"`
+}
+
+// SchemaParameters define the desired state of a PostgreSQL schema.
+type SchemaParameters struct {
+	// Role for ownership of this schema.
+	// +optional
+	// +crossplane:generate:reference:type=Role
+	Role *string `json:"role,omitempty"`
+
+	// RoleRef references the role object this schema is for.
+	// +immutable
+	// +optional
+	RoleRef *xpv1.Reference `json:"roleRef,omitempty"`
+
+	// RoleSelector selects a reference to a Role this schema is for.
+	// +immutable
+	// +optional
+	RoleSelector *xpv1.Selector `json:"roleSelector,omitempty"`
+
+	// Database this schema is for.
+	// +optional
+	// +crossplane:generate:reference:type=Database
+	Database *string `json:"database,omitempty"`
+
+	// DatabaseRef references the database object this schema is for.
+	// +immutable
+	// +optional
+	DatabaseRef *xpv1.Reference `json:"databaseRef,omitempty"`
+
+	// DatabaseSelector selects a reference to a Database this schema is for.
+	// +immutable
+	// +optional
+	DatabaseSelector *xpv1.Selector `json:"databaseSelector,omitempty"`
+}
+
+// A SchemaStatus represents the observed state of a Schema.
+type SchemaStatus struct {
+	xpv1.ResourceStatus `json:",inline"`
+}
+
+// +kubebuilder:object:root=true
+
+// A Schema represents the declarative state of a PostgreSQL schema.
+// +kubebuilder:subresource:status
+// +kubebuilder:printcolumn:name="READY",type="string",JSONPath=".status.conditions[?(@.type=='Ready')].status"
+// +kubebuilder:printcolumn:name="SYNCED",type="string",JSONPath=".status.conditions[?(@.type=='Synced')].status"
+// +kubebuilder:printcolumn:name="AGE",type="date",JSONPath=".metadata.creationTimestamp"
+// +kubebuilder:printcolumn:name="ROLE",type="string",JSONPath=".spec.forProvider.role"
+// +kubebuilder:printcolumn:name="DATABASE",type="string",JSONPath=".spec.forProvider.database"
+// +kubebuilder:resource:scope=Cluster,categories={crossplane,managed,sql}
+type Schema struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Spec   SchemaSpec   `json:"spec"`
+	Status SchemaStatus `json:"status,omitempty"`
+}
+
+// +kubebuilder:object:root=true
+
+// SchemaList contains a list of Schema
+type SchemaList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []Schema `json:"items"`
+}