Change PostgresIdentifier to a type alias

The type existed to avoid schema repetition with controller-gen, but
recent versions can do that using aliases. This eliminates the need for
some conversions.

internal/controller/postgrescluster/postgres.go

@@ -43,7 +43,7 @@ import (
 func (r *Reconciler) generatePostgresUserSecret(
 	cluster *v1beta1.PostgresCluster, spec *v1beta1.PostgresUserSpec, existing *corev1.Secret,
 ) (*corev1.Secret, error) {
-	username := string(spec.Name)
+	username := spec.Name
 	intent := &corev1.Secret{ObjectMeta: naming.PostgresUserSecret(cluster, username)}
 	intent.SetGroupVersionKind(corev1.SchemeGroupVersion.WithKind("Secret"))
 	initialize.Map(&intent.Data)
@@ -100,7 +100,7 @@ func (r *Reconciler) generatePostgresUserSecret(
 	// When a database has been specified, include it and a connection URI.
 	// - https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-CONNSTRING
 	if len(spec.Databases) > 0 {
-		database := string(spec.Databases[0])
+		database := spec.Databases[0]
 
 		intent.Data["dbname"] = []byte(database)
 		intent.Data["uri"] = []byte((&url.URL{
@@ -133,7 +133,7 @@ func (r *Reconciler) generatePostgresUserSecret(
 		intent.Data["pgbouncer-port"] = []byte(port)
 
 		if len(spec.Databases) > 0 {
-			database := string(spec.Databases[0])
+			database := spec.Databases[0]
 
 			intent.Data["pgbouncer-uri"] = []byte((&url.URL{
 				Scheme: "postgresql",
@@ -216,9 +216,7 @@ func (r *Reconciler) reconcilePostgresDatabases(
 		}
 	} else {
 		for _, user := range cluster.Spec.Users {
-			for _, database := range user.Databases {
-				databases.Insert(string(database))
-			}
+			databases.Insert(user.Databases...)
 		}
 	}
 
@@ -379,18 +377,17 @@ func (r *Reconciler) reconcilePostgresUserSecrets(
 			r.Recorder.Event(cluster, corev1.EventTypeWarning, "InvalidUser",
 				allErrors.ToAggregate().Error())
 		} else {
-			identifier := v1beta1.PostgresIdentifier(cluster.Name)
 			specUsers = []v1beta1.PostgresUserSpec{{
-				Name:      identifier,
-				Databases: []v1beta1.PostgresIdentifier{identifier},
+				Name:      cluster.Name,
+				Databases: []string{cluster.Name},
 			}}
 		}
 	}
 
 	// Index user specifications by PostgreSQL user name.
 	userSpecs := make(map[string]*v1beta1.PostgresUserSpec, len(specUsers))
 	for i := range specUsers {
-		userSpecs[string(specUsers[i].Name)] = &specUsers[i]
+		userSpecs[specUsers[i].Name] = &specUsers[i]
 	}
 
 	secrets := &corev1.SecretList{}

internal/controller/postgrescluster/postgres_test.go

@@ -163,7 +163,7 @@ func TestGeneratePostgresUserSecret(t *testing.T) {
 		}
 
 		// Present when specified.
-		spec.Databases = []v1beta1.PostgresIdentifier{"db1"}
+		spec.Databases = []string{"db1"}
 
 		secret, err = reconciler.generatePostgresUserSecret(cluster, &spec, nil)
 		assert.NilError(t, err)
@@ -180,7 +180,7 @@ func TestGeneratePostgresUserSecret(t *testing.T) {
 		}
 
 		// Only the first in the list.
-		spec.Databases = []v1beta1.PostgresIdentifier{"first", "asdf"}
+		spec.Databases = []string{"first", "asdf"}
 
 		secret, err = reconciler.generatePostgresUserSecret(cluster, &spec, nil)
 		assert.NilError(t, err)
@@ -214,7 +214,7 @@ func TestGeneratePostgresUserSecret(t *testing.T) {
 
 		// Includes a URI when possible.
 		spec := *spec
-		spec.Databases = []v1beta1.PostgresIdentifier{"yes", "no"}
+		spec.Databases = []string{"yes", "no"}
 
 		secret, err = reconciler.generatePostgresUserSecret(cluster, &spec, nil)
 		assert.NilError(t, err)

internal/pgadmin/users.go

@@ -239,7 +239,7 @@ with create_app().app_context():`,
 		if err == nil {
 			err = encoder.Encode(map[string]interface{}{
 				"username": spec.Name,
-				"password": passwords[string(spec.Name)],
+				"password": passwords[spec.Name],
 			})
 		}
 	}

internal/pgadmin/users_test.go

@@ -235,7 +235,7 @@ with create_app().app_context():
 			[]v1beta1.PostgresUserSpec{
 				{
 					Name:      "user-no-options",
-					Databases: []v1beta1.PostgresIdentifier{"db1"},
+					Databases: []string{"db1"},
 				},
 				{
 					Name:    "user-no-databases",

internal/postgres/users.go

@@ -102,7 +102,7 @@ CREATE TEMPORARY TABLE input (id serial, data json);
 				"databases": databases,
 				"options":   options,
 				"username":  spec.Name,
-				"verifier":  verifiers[string(spec.Name)],
+				"verifier":  verifiers[spec.Name],
 			})
 		}
 	}
@@ -190,9 +190,9 @@ func WriteUsersSchemasInPostgreSQL(ctx context.Context, exec Executor,
 		spec := users[i]
 
 		// We skip if the user has the name of a reserved schema
-		if RESERVED_SCHEMA_NAMES[string(spec.Name)] {
+		if RESERVED_SCHEMA_NAMES[spec.Name] {
 			log.V(1).Info("Skipping schema creation for user with reserved name",
-				"name", string(spec.Name))
+				"name", spec.Name)
 			continue
 		}
 
@@ -231,7 +231,7 @@ func WriteUsersSchemasInPostgreSQL(ctx context.Context, exec Executor,
 			}, "\n"),
 			map[string]string{
 				"databases": string(databases),
-				"username":  string(spec.Name),
+				"username":  spec.Name,
 
 				"ON_ERROR_STOP": "on", // Abort when any one statement fails.
 				"QUIET":         "on", // Do not print successful commands to stdout.

internal/postgres/users_test.go

@@ -131,7 +131,7 @@ COMMIT;`))
 			[]v1beta1.PostgresUserSpec{
 				{
 					Name:      "user-no-options",
-					Databases: []v1beta1.PostgresIdentifier{"db1"},
+					Databases: []string{"db1"},
 				},
 				{
 					Name:    "user-no-databases",
@@ -175,7 +175,7 @@ COMMIT;`))
 			[]v1beta1.PostgresUserSpec{
 				{
 					Name:      "postgres",
-					Databases: []v1beta1.PostgresIdentifier{"all", "ignored"},
+					Databases: []string{"all", "ignored"},
 					Options:   "NOLOGIN CONNECTION LIMIT 0",
 				},
 			},
@@ -213,18 +213,18 @@ func TestWriteUsersSchemasInPostgreSQL(t *testing.T) {
 			[]v1beta1.PostgresUserSpec{
 				{
 					Name:      "user-single-db",
-					Databases: []v1beta1.PostgresIdentifier{"db1"},
+					Databases: []string{"db1"},
 				},
 				{
 					Name: "user-no-databases",
 				},
 				{
 					Name:      "user-multi-dbs",
-					Databases: []v1beta1.PostgresIdentifier{"db1", "db2"},
+					Databases: []string{"db1", "db2"},
 				},
 				{
 					Name:      "public",
-					Databases: []v1beta1.PostgresIdentifier{"db3"},
+					Databases: []string{"db3"},
 				},
 			},
 		))

pkg/apis/postgres-operator.crunchydata.com/v1beta1/postgres_types.go

@@ -6,10 +6,10 @@ package v1beta1
 
 // PostgreSQL identifiers are limited in length but may contain any character.
 // More info: https://www.postgresql.org/docs/current/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS
-//
+// ---
 // +kubebuilder:validation:MinLength=1
 // +kubebuilder:validation:MaxLength=63
-type PostgresIdentifier string
+type PostgresIdentifier = string
 
 type PostgresPasswordSpec struct {
 	// Type of password to generate. Defaults to ASCII. Valid options are ASCII
@@ -23,6 +23,7 @@ type PostgresPasswordSpec struct {
 	//
 	// +kubebuilder:default=ASCII
 	// +kubebuilder:validation:Enum={ASCII,AlphaNumeric}
+	// +required
 	Type string `json:"type"`
 }
 
@@ -33,27 +34,29 @@ const (
 )
 
 type PostgresUserSpec struct {
-
+	// The name of this PostgreSQL user. The value may contain only lowercase
+	// letters, numbers, and hyphen so that it fits into Kubernetes metadata.
+	// ---
 	// This value goes into the name of a corev1.Secret and a label value, so
 	// it must match both IsDNS1123Subdomain and IsValidLabelValue. The pattern
 	// below is IsDNS1123Subdomain without any dots, U+002E.
-
-	// The name of this PostgreSQL user. The value may contain only lowercase
-	// letters, numbers, and hyphen so that it fits into Kubernetes metadata.
+	//
 	// +kubebuilder:validation:Pattern=`^[a-z0-9]([-a-z0-9]*[a-z0-9])?$`
-	// +kubebuilder:validation:Type=string
+	// +required
 	Name PostgresIdentifier `json:"name"`
 
 	// Databases to which this user can connect and create objects. Removing a
 	// database from this list does NOT revoke access. This field is ignored for
 	// the "postgres" user.
+	// ---
 	// +listType=set
 	// +optional
 	Databases []PostgresIdentifier `json:"databases,omitempty"`
 
 	// ALTER ROLE options except for PASSWORD. This field is ignored for the
 	// "postgres" user.
 	// More info: https://www.postgresql.org/docs/current/role-attributes.html
+	// ---
 	// +kubebuilder:validation:MaxLength=200
 	// +kubebuilder:validation:Pattern=`^[^;]*$`
 	// +kubebuilder:validation:XValidation:rule=`!self.matches("(?i:PASSWORD)")`,message="cannot assign password"
@@ -62,6 +65,7 @@ type PostgresUserSpec struct {
 	Options string `json:"options,omitempty"`
 
 	// Properties of the password generated for this user.
+	// ---
 	// +optional
 	Password *PostgresPasswordSpec `json:"password,omitempty"`
 }