# This is a combination of 7 commits.

# This is the 1st commit message:

Add Identity Pool construct

# This is the commit message #2:

Bug fixes

# This is the commit message #3:

Bug fixes

# This is the commit message #4:

Formatting

# This is the commit message #5:

Add construct methods

# This is the commit message #6:

Remove flat

# This is the commit message #7:

Fix issues

packages/@aws-cdk/aws-cloudfront/lib/private/invalidation.ts

@@ -0,0 +1,104 @@
+import { IResource, Resource, Names, Lazy } from '@aws-cdk/core';
+import { AwsCustomResource, AwsCustomResourcePolicy, PhysicalResourceId } from '@aws-cdk/custom-resources';
+import { Distribution } from '../distribution';
+import { CloudFrontWebDistribution } from '../web-distribution';
+
+/**
+ * Represents a Cloudfront Invalidation
+ */
+ export interface IInvalidation extends IResource {
+  /**
+   * Id of the CloudFront Distribution to associate
+   * @attribute
+   */
+  readonly distributionId:string;
+
+  /**
+   * A list of the paths in the distribution to invalidate
+   * @attribute
+   */
+  readonly invalidationPaths:string[];
+}
+
+/**
+ * Properties for creating an Invalidation
+ */
+export interface InvalidationProps {
+  /**
+   * Id of the CloudFront Distribution to associate
+   */
+  readonly distributionId: string;
+
+  /**
+   * A list of the paths in the distribution to invalidate
+   * @default - invalidate all paths: ['/*']
+   */
+  readonly invalidationPaths?: string[];
+
+  /**
+   * A name to identify the invalidation.
+   * @default - generated from the `id`
+   */
+  readonly invalidationName?: string;
+}
+
+/**
+ * A CloudFront Invalidation configuration
+ *
+ * @resource Aws::CloudFormation::CustomResource
+ */
+export class Invalidation extends Resource implements IInvalidation {
+
+  private resource:AwsCustomResource;
+
+  static fromDistribution(distribution: Distribution, invalidationPaths?: string[]): Invalidation {
+      const invalidation = new Invalidation(distribution.distributionId, invalidationPaths);
+      invalidation.resource.node.addDependency(distribution);
+      return invalidation;
+  }
+
+  static fromCloudFrontWebDistribution(webDistribution: CloudFrontWebDistribution, invalidationPaths?: string[]): Invalidation {
+    const invalidation = new Invalidation(webDistribution.distributionId, invalidationPaths);
+    invalidation.resource.node.addDependency(webDistribution);
+    return invalidation;
+  }
+
+  constructor(
+      public readonly distributionId: string,
+      public readonly invalidationPaths: string[] = ['/*']
+  ) {
+    super(scope, id, {
+      physicalName: props.invalidationName || Lazy.string({ produce: () => this.node.uniqueId }),
+    });
+    this.resource = new AwsCustomResource(this, `InvalidationResource${distributionId}`, {
+      policy: AwsCustomResourcePolicy.fromSdkCalls({
+        resources: AwsCustomResourcePolicy.ANY_RESOURCE,
+      }),
+      installLatestAwsSdk: true,
+      resourceType: 'Custom::CloudFrontInvalidation',
+      onUpdate: {
+        service: 'CloudFront',
+        action: 'createInvalidation',
+        physicalResourceId: PhysicalResourceId.fromResponse('Invalidation.Id'),
+        parameters: {
+          DistributionId: distributionId,
+          InvalidationBatch: {
+            CallerReference: this.generateName(),
+            Paths: {
+              Quantity: invalidationPaths.length,
+              Items: invalidationPaths,
+            },
+          },
+        },
+      },
+    });
+  }
+
+  private generateName(): string {
+    const name = Names.uniqueId(this);
+    if (name.length > 20) {
+      return name.substring(0, 20);
+    }
+    return name;
+  }
+}