feat(ssm): add ability to specify SSM Parameter tier

packages/@aws-cdk/aws-ssm/README.md

@@ -39,6 +39,16 @@ a CDK app. These are public (not secret) values. Parameters of type
 to provision secrets automatically, use Secrets Manager Secrets (see the
 `@aws-cdk/aws-secretsmanager` package).
 
+```ts
+new ssm.StringParameter(stack, 'Parameter', {
+  allowedPattern: '.*',
+  description: 'The value Foo',
+  parameterName: 'FooParameter',
+  stringValue: 'Foo',
+  tier: ssm.ParameterTier.ADVANCED,
+});
+```
+
 [creating SSM parameters](test/integ.parameter.lit.ts)
 
 When specifying an `allowedPattern`, the values provided as string literals

packages/@aws-cdk/aws-ssm/lib/parameter.ts

@@ -111,6 +111,13 @@ export interface ParameterOptions {
    * @default - auto-detect based on `parameterName`
    */
   readonly simpleName?: boolean;
+
+  /**
+   * The tier of the string parameter
+   *
+   * @default - undefined
+   */
+  readonly tier?: ParameterTier;
 }
 
 /**
@@ -206,6 +213,24 @@ export enum ParameterType {
   AWS_EC2_IMAGE_ID = 'AWS::EC2::Image::Id',
 }
 
+/**
+ * SSM parameter tier
+ */
+export enum ParameterTier {
+  /**
+   * String
+   */
+  ADVANCED = 'Advanced',
+  /**
+   * String
+   */
+  INTELLIGENT_TIERING = 'Intelligent-Tiering',
+  /**
+   * String
+   */
+  STANDARD = 'Standard',
+}
+
 /**
  * Common attributes for string parameters.
  */
@@ -271,6 +296,7 @@ export interface SecureStringParameterAttributes extends CommonStringParameterAt
    * @default - default master key
    */
   readonly encryptionKey?: kms.IKey;
+
 }
 
 /**
@@ -404,6 +430,7 @@ export class StringParameter extends ParameterBase implements IStringParameter {
       allowedPattern: props.allowedPattern,
       description: props.description,
       name: this.physicalName,
+      tier: props.tier,
       type: props.type || ParameterType.STRING,
       value: props.stringValue,
     });
@@ -462,6 +489,7 @@ export class StringListParameter extends ParameterBase implements IStringListPar
       allowedPattern: props.allowedPattern,
       description: props.description,
       name: this.physicalName,
+      tier: props.tier,
       type: ParameterType.STRING_LIST,
       value: props.stringListValue.join(','),
     });

packages/@aws-cdk/aws-ssm/test/test.parameter.ts

@@ -31,6 +31,26 @@ export = {
     test.done();
   },
 
+  'expect String SSM Parameter to have tier properly set'(test: Test) {
+    // GIVEN
+    const stack = new cdk.Stack();
+
+    // WHEN
+    new ssm.StringParameter(stack, 'Parameter', {
+      allowedPattern: '.*',
+      description: 'The value Foo',
+      parameterName: 'FooParameter',
+      stringValue: 'Foo',
+      tier: ssm.ParameterTier.ADVANCED,
+    });
+
+    // THEN
+    expect(stack).to(haveResource('AWS::SSM::Parameter', {
+      Tier: 'Advanced',
+    }));
+    test.done();
+  },
+
   'String SSM Parameter rejects invalid values'(test: Test) {
     // GIVEN
     const stack = new cdk.Stack();