feat(redshift): adds classic or elastic resize type option

packages/@aws-cdk/aws-redshift/lib/cluster.ts

@@ -322,6 +322,19 @@ export interface ClusterProps {
  * @default false
  */
  readonly publiclyAccessible?: boolean
+
+ /**
+ * If this flag is set, the cluster resizing type will be set to classic.
+ * When resizing a cluster, classic resizing will always provision a new cluster and transfer the data there.
+ *
+ * Classic resize takes more time to complete, but it can be useful in cases where the change in node count or
+ * the node type to migrate to doesn't fall within the bounds for elastic resize.
+ *
+ * @see https://docs.aws.amazon.com/redshift/latest/mgmt/managing-cluster-operations.html#elastic-resize
+ *
+ * @default - Elastic resize type
+ */
+ readonly classicResizing?: boolean
 }
 
 /**
@@ -485,6 +498,7 @@ export class Cluster extends ClusterBase {
  // Encryption
  kmsKeyId: props.encryptionKey?.keyId,
  encrypted: props.encrypted ?? true,
+ classic: props.classicResizing,
  });
 
  cluster.applyRemovalPolicy(removalPolicy, {

packages/@aws-cdk/aws-redshift/test/cluster.test.ts

@@ -422,6 +422,73 @@ test('default child returns a CfnCluster', () => {
  expect(cluster.node.defaultChild).toBeInstanceOf(CfnCluster);
 });
 
+test.each([
+ ['elastic', false],
+ ['classic', true],
+])('resize type (%s)', (_, classicResizing) => {
+ // WHEN
+ new Cluster(stack, 'Redshift', {
+ masterUser: {
+ masterUsername: 'admin',
+ masterPassword: cdk.SecretValue.unsafePlainText('tooshort'),
+ },
+ classicResizing,
+ vpc,
+ });
+
+ // THEN
+ Template.fromStack(stack).hasResource('AWS::Redshift::Cluster', {
+ Properties: {
+ AllowVersionUpgrade: true,
+ MasterUsername: 'admin',
+ MasterUserPassword: 'tooshort',
+ ClusterType: 'multi-node',
+ AutomatedSnapshotRetentionPeriod: 1,
+ Encrypted: true,
+ NumberOfNodes: 2,
+ NodeType: 'dc2.large',
+ DBName: 'default_db',
+ PubliclyAccessible: false,
+ ClusterSubnetGroupName: { Ref: 'RedshiftSubnetsDFE70E0A' },
+ VpcSecurityGroupIds: [{ 'Fn::GetAtt': ['RedshiftSecurityGroup796D74A7', 'GroupId'] }],
+ Classic: classicResizing,
+ },
+ DeletionPolicy: 'Retain',
+ UpdateReplacePolicy: 'Retain',
+ });
+});
+
+test('resize type not set', () => {
+ // WHEN
+ new Cluster(stack, 'Redshift', {
+ masterUser: {
+ masterUsername: 'admin',
+ masterPassword: cdk.SecretValue.unsafePlainText('tooshort'),
+ },
+ vpc,
+ });
+
+ // THEN
+ Template.fromStack(stack).hasResource('AWS::Redshift::Cluster', {
+ Properties: {
+ AllowVersionUpgrade: true,
+ MasterUsername: 'admin',
+ MasterUserPassword: 'tooshort',
+ ClusterType: 'multi-node',
+ AutomatedSnapshotRetentionPeriod: 1,
+ Encrypted: true,
+ NumberOfNodes: 2,
+ NodeType: 'dc2.large',
+ DBName: 'default_db',
+ PubliclyAccessible: false,
+ ClusterSubnetGroupName: { Ref: 'RedshiftSubnetsDFE70E0A' },
+ VpcSecurityGroupIds: [{ 'Fn::GetAtt': ['RedshiftSecurityGroup796D74A7', 'GroupId'] }],
+ },
+ DeletionPolicy: 'Retain',
+ UpdateReplacePolicy: 'Retain',
+ });
+});
+
 function testStack() {
  const newTestStack = new cdk.Stack(undefined, undefined, { env: { account: '12345', region: 'us-test-1' } });
  newTestStack.node.setContext('availability-zones:12345:us-test-1', ['us-test-1a', 'us-test-1b']);