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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,180 @@ | ||
| import { IResource, Names, Resource, Stack } from '@aws-cdk/core'; | ||
| import { Construct } from 'constructs'; | ||
| import { CfnFunction } from './cloudfront.generated'; | ||
|
|
||
| /** | ||
| * Represents the function's source code | ||
| */ | ||
| export abstract class FunctionCode { | ||
|
|
||
| /** | ||
| * Inline code for function | ||
| * @returns `InlineCode` with inline code. | ||
| * @param code The actual function code | ||
| */ | ||
| public static fromInline(code: string): FunctionCode { | ||
| return new InlineCode(code); | ||
| } | ||
|
|
||
| /** | ||
| * renders the function code | ||
| */ | ||
| public abstract render(): string; | ||
| } | ||
|
|
||
| /** | ||
| * Represents the function's source code as inline code | ||
| */ | ||
| class InlineCode extends FunctionCode { | ||
|
|
||
| constructor(private code: string) { | ||
| super(); | ||
| } | ||
|
|
||
| public render(): string { | ||
| return this.code; | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Represents a CloudFront Function | ||
| */ | ||
| export interface IFunction extends IResource { | ||
| /** | ||
| * The name of the function. | ||
| * @attribute | ||
| */ | ||
| readonly functionName: string; | ||
|
|
||
| /** | ||
| * The ARN of the function. | ||
| * @attribute | ||
| */ | ||
| readonly functionArn: string; | ||
| } | ||
|
|
||
| /** | ||
| * Attributes of an existing CloudFront Function to import it | ||
| */ | ||
| export interface FunctionAttributes { | ||
| /** | ||
| * The name of the function. | ||
| */ | ||
| readonly functionName: string; | ||
|
|
||
| /** | ||
| * The ARN of the function. | ||
| */ | ||
| readonly functionArn: string; | ||
| } | ||
|
|
||
| /** | ||
| * Properties for creating a CloudFront Function | ||
| */ | ||
| export interface FunctionProps { | ||
| /** | ||
| * A name to identify the function. | ||
| * @default - generated from the `id` | ||
| */ | ||
| readonly functionName?: string; | ||
|
|
||
| /** | ||
| * A comment to describe the function. | ||
| * @default - same as `functionName` | ||
| */ | ||
| readonly comment?: string; | ||
|
|
||
| /** | ||
| * The source code of the function. | ||
| */ | ||
| readonly code: FunctionCode; | ||
| } | ||
|
|
||
| /** | ||
| * A CloudFront Function | ||
| * | ||
| * @resource AWS::CloudFront::Function | ||
| */ | ||
| export class Function extends Resource implements IFunction { | ||
|
|
||
| /** Imports a function by its name and ARN */ | ||
| public static fromFunctionAttributes(scope: Construct, id: string, attrs: FunctionAttributes): IFunction { | ||
| return new class extends Resource implements IFunction { | ||
| public readonly functionName = attrs.functionName; | ||
| public readonly functionArn = attrs.functionArn; | ||
| }(scope, id); | ||
| } | ||
|
|
||
| /** | ||
| * the name of the CloudFront function | ||
| * @attribute | ||
| */ | ||
| public readonly functionName: string; | ||
| /** | ||
| * the ARN of the CloudFront function | ||
| * @attribute | ||
| */ | ||
| public readonly functionArn: string; | ||
| /** | ||
| * the deployment stage of the CloudFront function | ||
| * @attribute | ||
| */ | ||
| public readonly functionStage: string; | ||
|
|
||
| constructor(scope: Construct, id: string, props: FunctionProps) { | ||
| super(scope, id); | ||
|
|
||
| this.functionName = props.functionName ?? this.generateName(); | ||
|
|
||
| const resource = new CfnFunction(this, 'Resource', { | ||
| autoPublish: true, | ||
| functionCode: props.code.render(), | ||
| functionConfig: { | ||
| comment: props.comment ?? this.functionName, | ||
| runtime: 'cloudfront-js-1.0', | ||
| }, | ||
| name: this.functionName, | ||
| }); | ||
|
|
||
| this.functionArn = resource.attrFunctionArn; | ||
| this.functionStage = resource.attrStage; | ||
| } | ||
|
|
||
| private generateName(): string { | ||
| const name = Stack.of(this).region + Names.uniqueId(this); | ||
| if (name.length > 64) { | ||
| return name.substring(0, 32) + name.substring(name.length - 32); | ||
| } | ||
| return name; | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * The type of events that a CloudFront function can be invoked in response to. | ||
| */ | ||
| export enum FunctionEventType { | ||
|
|
||
| /** | ||
| * The viewer-request specifies the incoming request | ||
| */ | ||
| VIEWER_REQUEST = 'viewer-request', | ||
|
|
||
| /** | ||
| * The viewer-response specifies the outgoing response | ||
| */ | ||
| VIEWER_RESPONSE = 'viewer-response', | ||
| } | ||
|
|
||
| /** | ||
| * Represents a CloudFront function and event type when using CF Functions. | ||
| * The type of the {@link AddBehaviorOptions.functionAssociations} property. | ||
| */ | ||
| export interface FunctionAssociation { | ||
| /** | ||
| * The CloudFront function that will be invoked. | ||
| */ | ||
| readonly function: IFunction; | ||
|
|
||
| /** The type of event which should invoke the function. */ | ||
| readonly eventType: FunctionEventType; | ||
| } |
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