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distribution.test.ts
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distribution.test.ts
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import { defaultOrigin, defaultOriginGroup, defaultOriginWithOriginAccessControl } from './test-origin';
import { Annotations, Match, Template } from '../../assertions';
import * as acm from '../../aws-certificatemanager';
import * as cloudwatch from '../../aws-cloudwatch';
import * as iam from '../../aws-iam';
import * as kinesis from '../../aws-kinesis';
import * as lambda from '../../aws-lambda';
import * as s3 from '../../aws-s3';
import { App, Duration, Stack } from '../../core';
import {
CfnDistribution,
Distribution,
Endpoint,
Function,
FunctionCode,
FunctionEventType,
GeoRestriction,
HttpVersion,
IOrigin,
LambdaEdgeEventType,
PriceClass,
RealtimeLogConfig,
SecurityPolicyProtocol,
SSLMethod,
} from '../lib';
let app: App;
let stack: Stack;
beforeEach(() => {
app = new App();
stack = new Stack(app, 'Stack', {
env: { account: '1234', region: 'testregion' },
});
});
test('minimal example renders correctly', () => {
const origin = defaultOrigin();
new Distribution(stack, 'MyDist', { defaultBehavior: { origin } });
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
DefaultCacheBehavior: {
CachePolicyId: '658327ea-f89d-4fab-a63d-7e88639e58f6',
Compress: true,
TargetOriginId: 'StackMyDistOrigin1D6D5E535',
ViewerProtocolPolicy: 'allow-all',
},
Enabled: true,
HttpVersion: 'http2',
IPV6Enabled: true,
Origins: [{
DomainName: 'www.example.com',
Id: 'StackMyDistOrigin1D6D5E535',
CustomOriginConfig: {
OriginProtocolPolicy: 'https-only',
},
}],
},
});
});
test('exhaustive example of props renders correctly and SSL method sni-only', () => {
const origin = defaultOrigin();
const certificate = acm.Certificate.fromCertificateArn(stack, 'Cert', 'arn:aws:acm:us-east-1:123456789012:certificate/12345678-1234-1234-1234-123456789012');
new Distribution(stack, 'MyDist', {
defaultBehavior: { origin },
certificate,
comment: 'a test',
defaultRootObject: 'index.html',
domainNames: ['example.com'],
enabled: false,
enableIpv6: false,
enableLogging: true,
geoRestriction: GeoRestriction.denylist('US', 'GB'),
httpVersion: HttpVersion.HTTP1_1,
logFilePrefix: 'logs/',
logIncludesCookies: true,
sslSupportMethod: SSLMethod.SNI,
minimumProtocolVersion: SecurityPolicyProtocol.TLS_V1_2_2019,
priceClass: PriceClass.PRICE_CLASS_100,
webAclId: '473e64fd-f30b-4765-81a0-62ad96dd167a',
});
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
Aliases: ['example.com'],
DefaultCacheBehavior: {
CachePolicyId: '658327ea-f89d-4fab-a63d-7e88639e58f6',
Compress: true,
TargetOriginId: 'StackMyDistOrigin1D6D5E535',
ViewerProtocolPolicy: 'allow-all',
},
Comment: 'a test',
DefaultRootObject: 'index.html',
Enabled: false,
HttpVersion: 'http1.1',
IPV6Enabled: false,
Logging: {
Bucket: { 'Fn::GetAtt': ['MyDistLoggingBucket9B8976BC', 'RegionalDomainName'] },
IncludeCookies: true,
Prefix: 'logs/',
},
Origins: [{
DomainName: 'www.example.com',
Id: 'StackMyDistOrigin1D6D5E535',
CustomOriginConfig: {
OriginProtocolPolicy: 'https-only',
},
}],
PriceClass: 'PriceClass_100',
Restrictions: {
GeoRestriction: {
Locations: ['US', 'GB'],
RestrictionType: 'blacklist',
},
},
ViewerCertificate: {
AcmCertificateArn: 'arn:aws:acm:us-east-1:123456789012:certificate/12345678-1234-1234-1234-123456789012',
SslSupportMethod: 'sni-only',
MinimumProtocolVersion: 'TLSv1.2_2019',
},
WebACLId: '473e64fd-f30b-4765-81a0-62ad96dd167a',
},
});
});
test('exhaustive example of props renders correctly and SSL method vip', () => {
const origin = defaultOrigin();
const certificate = acm.Certificate.fromCertificateArn(stack, 'Cert', 'arn:aws:acm:us-east-1:123456789012:certificate/12345678-1234-1234-1234-123456789012');
new Distribution(stack, 'MyDist', {
defaultBehavior: { origin },
certificate,
comment: 'a test',
defaultRootObject: 'index.html',
domainNames: ['example.com'],
enabled: false,
enableIpv6: false,
enableLogging: true,
geoRestriction: GeoRestriction.denylist('US', 'GB'),
httpVersion: HttpVersion.HTTP1_1,
logFilePrefix: 'logs/',
logIncludesCookies: true,
sslSupportMethod: SSLMethod.VIP,
minimumProtocolVersion: SecurityPolicyProtocol.TLS_V1_2_2019,
priceClass: PriceClass.PRICE_CLASS_100,
webAclId: '473e64fd-f30b-4765-81a0-62ad96dd167a',
});
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
Aliases: ['example.com'],
DefaultCacheBehavior: {
CachePolicyId: '658327ea-f89d-4fab-a63d-7e88639e58f6',
Compress: true,
TargetOriginId: 'StackMyDistOrigin1D6D5E535',
ViewerProtocolPolicy: 'allow-all',
},
Comment: 'a test',
DefaultRootObject: 'index.html',
Enabled: false,
HttpVersion: 'http1.1',
IPV6Enabled: false,
Logging: {
Bucket: { 'Fn::GetAtt': ['MyDistLoggingBucket9B8976BC', 'RegionalDomainName'] },
IncludeCookies: true,
Prefix: 'logs/',
},
Origins: [{
DomainName: 'www.example.com',
Id: 'StackMyDistOrigin1D6D5E535',
CustomOriginConfig: {
OriginProtocolPolicy: 'https-only',
},
}],
PriceClass: 'PriceClass_100',
Restrictions: {
GeoRestriction: {
Locations: ['US', 'GB'],
RestrictionType: 'blacklist',
},
},
ViewerCertificate: {
AcmCertificateArn: 'arn:aws:acm:us-east-1:123456789012:certificate/12345678-1234-1234-1234-123456789012',
SslSupportMethod: 'vip',
MinimumProtocolVersion: 'TLSv1.2_2019',
},
WebACLId: '473e64fd-f30b-4765-81a0-62ad96dd167a',
},
});
});
test('exhaustive example of props renders correctly and SSL method default', () => {
const origin = defaultOrigin();
const certificate = acm.Certificate.fromCertificateArn(stack, 'Cert', 'arn:aws:acm:us-east-1:123456789012:certificate/12345678-1234-1234-1234-123456789012');
new Distribution(stack, 'MyDist', {
defaultBehavior: { origin },
certificate,
comment: 'a test',
defaultRootObject: 'index.html',
domainNames: ['example.com'],
enabled: false,
enableIpv6: false,
enableLogging: true,
geoRestriction: GeoRestriction.denylist('US', 'GB'),
httpVersion: HttpVersion.HTTP1_1,
logFilePrefix: 'logs/',
logIncludesCookies: true,
minimumProtocolVersion: SecurityPolicyProtocol.TLS_V1_2_2019,
priceClass: PriceClass.PRICE_CLASS_100,
webAclId: '473e64fd-f30b-4765-81a0-62ad96dd167a',
});
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
Aliases: ['example.com'],
DefaultCacheBehavior: {
CachePolicyId: '658327ea-f89d-4fab-a63d-7e88639e58f6',
Compress: true,
TargetOriginId: 'StackMyDistOrigin1D6D5E535',
ViewerProtocolPolicy: 'allow-all',
},
Comment: 'a test',
DefaultRootObject: 'index.html',
Enabled: false,
HttpVersion: 'http1.1',
IPV6Enabled: false,
Logging: {
Bucket: { 'Fn::GetAtt': ['MyDistLoggingBucket9B8976BC', 'RegionalDomainName'] },
IncludeCookies: true,
Prefix: 'logs/',
},
Origins: [{
DomainName: 'www.example.com',
Id: 'StackMyDistOrigin1D6D5E535',
CustomOriginConfig: {
OriginProtocolPolicy: 'https-only',
},
}],
PriceClass: 'PriceClass_100',
Restrictions: {
GeoRestriction: {
Locations: ['US', 'GB'],
RestrictionType: 'blacklist',
},
},
ViewerCertificate: {
AcmCertificateArn: 'arn:aws:acm:us-east-1:123456789012:certificate/12345678-1234-1234-1234-123456789012',
SslSupportMethod: 'sni-only',
MinimumProtocolVersion: 'TLSv1.2_2019',
},
WebACLId: '473e64fd-f30b-4765-81a0-62ad96dd167a',
},
});
});
test('ensure comment prop is not greater than max lenght', () => {
const origin = defaultOrigin();
new Distribution(stack, 'MyDist', {
defaultBehavior: { origin },
comment: `Adding a comment longer than 128 characters should be trimmed and added the\x20
ellipsis so a user would know there was more to read and everything beyond this point should not show up`,
});
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
DefaultCacheBehavior: {
CachePolicyId: '658327ea-f89d-4fab-a63d-7e88639e58f6',
Compress: true,
TargetOriginId: 'StackMyDistOrigin1D6D5E535',
ViewerProtocolPolicy: 'allow-all',
},
Comment: `Adding a comment longer than 128 characters should be trimmed and added the\x20
ellipsis so a user would know there was more to ...`,
Enabled: true,
HttpVersion: 'http2',
IPV6Enabled: true,
Origins: [
{
DomainName: 'www.example.com',
Id: 'StackMyDistOrigin1D6D5E535',
CustomOriginConfig: {
OriginProtocolPolicy: 'https-only',
},
},
],
},
});
});
describe('multiple behaviors', () => {
test('a second behavior can\'t be specified with the catch-all path pattern', () => {
const origin = defaultOrigin();
expect(() => {
new Distribution(stack, 'MyDist', {
defaultBehavior: { origin },
additionalBehaviors: {
'*': { origin },
},
});
}).toThrow(/Only the default behavior can have a path pattern of \'*\'/);
});
test('a second behavior can be added to the original origin', () => {
const origin = defaultOrigin();
new Distribution(stack, 'MyDist', {
defaultBehavior: { origin },
additionalBehaviors: {
'api/*': { origin },
},
});
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
DefaultCacheBehavior: {
CachePolicyId: '658327ea-f89d-4fab-a63d-7e88639e58f6',
Compress: true,
TargetOriginId: 'StackMyDistOrigin1D6D5E535',
ViewerProtocolPolicy: 'allow-all',
},
CacheBehaviors: [{
CachePolicyId: '658327ea-f89d-4fab-a63d-7e88639e58f6',
Compress: true,
PathPattern: 'api/*',
TargetOriginId: 'StackMyDistOrigin1D6D5E535',
ViewerProtocolPolicy: 'allow-all',
}],
Enabled: true,
HttpVersion: 'http2',
IPV6Enabled: true,
Origins: [{
DomainName: 'www.example.com',
Id: 'StackMyDistOrigin1D6D5E535',
CustomOriginConfig: {
OriginProtocolPolicy: 'https-only',
},
}],
},
});
});
test('a second behavior can be added to a secondary origin', () => {
const origin = defaultOrigin();
const origin2 = defaultOrigin('origin2.example.com');
new Distribution(stack, 'MyDist', {
defaultBehavior: { origin },
additionalBehaviors: {
'api/*': { origin: origin2 },
},
});
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
DefaultCacheBehavior: {
CachePolicyId: '658327ea-f89d-4fab-a63d-7e88639e58f6',
Compress: true,
TargetOriginId: 'StackMyDistOrigin1D6D5E535',
ViewerProtocolPolicy: 'allow-all',
},
CacheBehaviors: [{
CachePolicyId: '658327ea-f89d-4fab-a63d-7e88639e58f6',
Compress: true,
PathPattern: 'api/*',
TargetOriginId: 'StackMyDistOrigin20B96F3AD',
ViewerProtocolPolicy: 'allow-all',
}],
Enabled: true,
HttpVersion: 'http2',
IPV6Enabled: true,
Origins: [{
DomainName: 'www.example.com',
Id: 'StackMyDistOrigin1D6D5E535',
CustomOriginConfig: {
OriginProtocolPolicy: 'https-only',
},
},
{
DomainName: 'origin2.example.com',
Id: 'StackMyDistOrigin20B96F3AD',
CustomOriginConfig: {
OriginProtocolPolicy: 'https-only',
},
}],
},
});
});
test('behavior creation order is preserved', () => {
const origin = defaultOrigin();
const origin2 = defaultOrigin('origin2.example.com');
const dist = new Distribution(stack, 'MyDist', {
defaultBehavior: { origin },
additionalBehaviors: {
'api/1*': { origin: origin2 },
},
});
dist.addBehavior('api/2*', origin);
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
DefaultCacheBehavior: {
CachePolicyId: '658327ea-f89d-4fab-a63d-7e88639e58f6',
Compress: true,
TargetOriginId: 'StackMyDistOrigin1D6D5E535',
ViewerProtocolPolicy: 'allow-all',
},
CacheBehaviors: [{
CachePolicyId: '658327ea-f89d-4fab-a63d-7e88639e58f6',
Compress: true,
PathPattern: 'api/1*',
TargetOriginId: 'StackMyDistOrigin20B96F3AD',
ViewerProtocolPolicy: 'allow-all',
},
{
CachePolicyId: '658327ea-f89d-4fab-a63d-7e88639e58f6',
Compress: true,
PathPattern: 'api/2*',
TargetOriginId: 'StackMyDistOrigin1D6D5E535',
ViewerProtocolPolicy: 'allow-all',
}],
Enabled: true,
HttpVersion: 'http2',
IPV6Enabled: true,
Origins: [{
DomainName: 'www.example.com',
Id: 'StackMyDistOrigin1D6D5E535',
CustomOriginConfig: {
OriginProtocolPolicy: 'https-only',
},
},
{
DomainName: 'origin2.example.com',
Id: 'StackMyDistOrigin20B96F3AD',
CustomOriginConfig: {
OriginProtocolPolicy: 'https-only',
},
}],
},
});
});
});
describe('certificates', () => {
test('should fail if using an imported certificate from outside of us-east-1', () => {
const origin = defaultOrigin();
const certificate = acm.Certificate.fromCertificateArn(stack, 'Cert', 'arn:aws:acm:eu-west-1:123456789012:certificate/12345678-1234-1234-1234-123456789012');
expect(() => {
new Distribution(stack, 'Dist', {
defaultBehavior: { origin },
certificate,
});
}).toThrow(/Distribution certificates must be in the us-east-1 region and the certificate you provided is in eu-west-1./);
});
test('adding a certificate without a domain name', () => {
const certificate = acm.Certificate.fromCertificateArn(stack, 'Cert', 'arn:aws:acm:us-east-1:123456789012:certificate/12345678-1234-1234-1234-123456789012');
new Distribution(stack, 'Dist1', {
defaultBehavior: { origin: defaultOrigin() },
certificate,
});
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
Aliases: Match.absent(),
ViewerCertificate: {
AcmCertificateArn: 'arn:aws:acm:us-east-1:123456789012:certificate/12345678-1234-1234-1234-123456789012',
},
},
});
Annotations.fromStack(stack).hasWarning('/Stack/Dist1', 'No domain names are specified. You will need to specify it after running associate-alias CLI command manually. See the "Moving an alternate domain name to a different distribution" section of module\'s README for more info. [ack: @aws-cdk/aws-cloudfront:emptyDomainNames]');
});
test('use the TLSv1.2_2021 security policy by default', () => {
const certificate = acm.Certificate.fromCertificateArn(stack, 'Cert', 'arn:aws:acm:us-east-1:123456789012:certificate/12345678-1234-1234-1234-123456789012');
new Distribution(stack, 'Dist', {
defaultBehavior: { origin: defaultOrigin() },
domainNames: ['example.com', 'www.example.com'],
certificate,
});
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
Aliases: ['example.com', 'www.example.com'],
ViewerCertificate: {
AcmCertificateArn: 'arn:aws:acm:us-east-1:123456789012:certificate/12345678-1234-1234-1234-123456789012',
SslSupportMethod: 'sni-only',
MinimumProtocolVersion: 'TLSv1.2_2021',
},
},
});
});
test('adding a certificate with non default security policy protocol', () => {
const certificate = acm.Certificate.fromCertificateArn(stack, 'Cert', 'arn:aws:acm:us-east-1:123456789012:certificate/12345678-1234-1234-1234-123456789012');
new Distribution(stack, 'Dist', {
defaultBehavior: { origin: defaultOrigin() },
domainNames: ['www.example.com'],
sslSupportMethod: SSLMethod.SNI,
minimumProtocolVersion: SecurityPolicyProtocol.TLS_V1_2016,
certificate: certificate,
});
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
ViewerCertificate: {
AcmCertificateArn: 'arn:aws:acm:us-east-1:123456789012:certificate/12345678-1234-1234-1234-123456789012',
SslSupportMethod: 'sni-only',
MinimumProtocolVersion: 'TLSv1_2016',
},
},
});
});
});
describe('custom error responses', () => {
test('should fail if only the error code is provided', () => {
const origin = defaultOrigin();
expect(() => {
new Distribution(stack, 'Dist', {
defaultBehavior: { origin },
errorResponses: [{ httpStatus: 404 }],
});
}).toThrow(/A custom error response without either a \'responseHttpStatus\', \'ttl\' or \'responsePagePath\' is not valid./);
});
test('should render the array of error configs if provided', () => {
const origin = defaultOrigin();
new Distribution(stack, 'Dist', {
defaultBehavior: { origin },
errorResponses: [{
// responseHttpStatus defaults to httpsStatus
httpStatus: 404,
responsePagePath: '/errors/404.html',
},
{
// without responsePagePath
httpStatus: 500,
ttl: Duration.seconds(2),
},
{
// with responseHttpStatus different from httpStatus
httpStatus: 403,
responseHttpStatus: 200,
responsePagePath: '/index.html',
}],
});
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
CustomErrorResponses: [
{
ErrorCode: 404,
ResponseCode: 404,
ResponsePagePath: '/errors/404.html',
},
{
ErrorCachingMinTTL: 2,
ErrorCode: 500,
},
{
ErrorCode: 403,
ResponseCode: 200,
ResponsePagePath: '/index.html',
},
],
},
});
});
});
describe('logging', () => {
test('does not include logging if disabled and no bucket provided', () => {
const origin = defaultOrigin();
new Distribution(stack, 'MyDist', { defaultBehavior: { origin } });
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
Logging: Match.absent(),
},
});
});
test('throws error if logging disabled but bucket provided', () => {
const origin = defaultOrigin();
expect(() => {
new Distribution(stack, 'MyDist', {
defaultBehavior: { origin },
enableLogging: false,
logBucket: new s3.Bucket(stack, 'Bucket'),
});
}).toThrow(/Explicitly disabled logging but provided a logging bucket./);
});
test('creates bucket if none is provided', () => {
const origin = defaultOrigin();
new Distribution(stack, 'MyDist', {
defaultBehavior: { origin },
enableLogging: true,
});
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
Logging: {
Bucket: { 'Fn::GetAtt': ['MyDistLoggingBucket9B8976BC', 'RegionalDomainName'] },
},
},
});
Template.fromStack(stack).hasResourceProperties('AWS::S3::Bucket', {
OwnershipControls: {
Rules: [
{ ObjectOwnership: 'ObjectWriter' },
],
},
});
});
test('uses existing bucket if provided', () => {
const origin = defaultOrigin();
const loggingBucket = new s3.Bucket(stack, 'MyLoggingBucket');
new Distribution(stack, 'MyDist', {
defaultBehavior: { origin },
logBucket: loggingBucket,
});
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
Logging: {
Bucket: { 'Fn::GetAtt': ['MyLoggingBucket4382CD04', 'RegionalDomainName'] },
},
},
});
});
test('can set prefix and cookies', () => {
const origin = defaultOrigin();
new Distribution(stack, 'MyDist', {
defaultBehavior: { origin },
enableLogging: true,
logFilePrefix: 'logs/',
logIncludesCookies: true,
});
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
Logging: {
Bucket: { 'Fn::GetAtt': ['MyDistLoggingBucket9B8976BC', 'RegionalDomainName'] },
IncludeCookies: true,
Prefix: 'logs/',
},
},
});
});
});
describe('with Lambda@Edge functions', () => {
let lambdaFunction: lambda.Function;
let origin: IOrigin;
beforeEach(() => {
lambdaFunction = new lambda.Function(stack, 'Function', {
runtime: lambda.Runtime.NODEJS_LATEST,
code: lambda.Code.fromInline('whatever'),
handler: 'index.handler',
});
origin = defaultOrigin();
});
test('can add an edge lambdas to the default behavior', () => {
new Distribution(stack, 'MyDist', {
defaultBehavior: {
origin,
edgeLambdas: [
{
functionVersion: lambdaFunction.currentVersion,
eventType: LambdaEdgeEventType.ORIGIN_REQUEST,
includeBody: true,
},
],
},
});
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
DefaultCacheBehavior: {
LambdaFunctionAssociations: [
{
EventType: 'origin-request',
IncludeBody: true,
LambdaFunctionARN: {
Ref: Match.stringLikeRegexp(stack.getLogicalId(lambdaFunction.currentVersion.node.defaultChild as lambda.CfnVersion)),
},
},
],
},
},
});
});
test('edgelambda.amazonaws.com is added to the trust policy of lambda', () => {
new Distribution(stack, 'MyDist', {
defaultBehavior: {
origin,
edgeLambdas: [
{
functionVersion: lambdaFunction.currentVersion,
eventType: LambdaEdgeEventType.ORIGIN_REQUEST,
},
],
},
});
Template.fromStack(stack).hasResourceProperties('AWS::IAM::Role', {
AssumeRolePolicyDocument: {
Statement: [
{
Action: 'sts:AssumeRole',
Effect: 'Allow',
Principal: {
Service: 'lambda.amazonaws.com',
},
},
{
Action: 'sts:AssumeRole',
Effect: 'Allow',
Principal: {
Service: 'edgelambda.amazonaws.com',
},
},
],
Version: '2012-10-17',
},
});
});
test('can add an edge lambdas to additional behaviors', () => {
new Distribution(stack, 'MyDist', {
defaultBehavior: { origin },
additionalBehaviors: {
'images/*': {
origin,
edgeLambdas: [
{
functionVersion: lambdaFunction.currentVersion,
eventType: LambdaEdgeEventType.VIEWER_REQUEST,
},
],
},
},
});
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
CacheBehaviors: [
Match.objectLike({
PathPattern: 'images/*',
LambdaFunctionAssociations: [
{
EventType: 'viewer-request',
LambdaFunctionARN: {
Ref: Match.stringLikeRegexp(stack.getLogicalId(lambdaFunction.currentVersion.node.defaultChild as lambda.CfnVersion)),
},
},
],
}),
],
},
});
});
test('fails creation when attempting to add the $LATEST function version as an edge Lambda to the default behavior', () => {
expect(() => {
new Distribution(stack, 'MyDist', {
defaultBehavior: {
origin,
edgeLambdas: [
{
functionVersion: lambdaFunction.latestVersion,
eventType: LambdaEdgeEventType.ORIGIN_RESPONSE,
},
],
},
});
}).toThrow(/\$LATEST function version cannot be used for Lambda@Edge/);
});
test('with removable env vars', () => {
const envLambdaFunction = new lambda.Function(stack, 'EnvFunction', {
runtime: lambda.Runtime.NODEJS_LATEST,
code: lambda.Code.fromInline('whateverwithenv'),
handler: 'index.handler',
});
envLambdaFunction.addEnvironment('KEY', 'value', { removeInEdge: true });
new Distribution(stack, 'MyDist', {
defaultBehavior: {
origin,
edgeLambdas: [
{
functionVersion: envLambdaFunction.currentVersion,
eventType: LambdaEdgeEventType.ORIGIN_REQUEST,
},
],
},
});
Template.fromStack(stack).hasResourceProperties('AWS::Lambda::Function', {
Environment: Match.absent(),
Code: {
ZipFile: 'whateverwithenv',
},
});
});
test('with incompatible env vars', () => {
const envLambdaFunction = new lambda.Function(stack, 'EnvFunction', {
runtime: lambda.Runtime.NODEJS_LATEST,
code: lambda.Code.fromInline('whateverwithenv'),
handler: 'index.handler',
environment: {
KEY: 'value',
},
});
new Distribution(stack, 'MyDist', {
defaultBehavior: {
origin,
edgeLambdas: [
{
functionVersion: envLambdaFunction.currentVersion,
eventType: LambdaEdgeEventType.ORIGIN_REQUEST,
},
],
},
});
expect(() => app.synth()).toThrow(/KEY/);
});
test('with singleton function', () => {
const singleton = new lambda.SingletonFunction(stack, 'Singleton', {
uuid: 'singleton-for-cloudfront',
runtime: lambda.Runtime.NODEJS_LATEST,
code: lambda.Code.fromInline('code'),
handler: 'index.handler',
});
new Distribution(stack, 'MyDist', {
defaultBehavior: {
origin,
edgeLambdas: [
{
functionVersion: singleton.currentVersion,
eventType: LambdaEdgeEventType.ORIGIN_REQUEST,
},
],
},
});
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
DefaultCacheBehavior: {
LambdaFunctionAssociations: [
{
EventType: 'origin-request',
LambdaFunctionARN: {
Ref: Match.stringLikeRegexp(stack.getLogicalId(singleton.currentVersion.node.defaultChild as lambda.CfnVersion)),
},
},
],
},
},
});
});
});
describe('with CloudFront functions', () => {
test('can add a CloudFront function to the default behavior', () => {
new Distribution(stack, 'MyDist', {
defaultBehavior: {
origin: defaultOrigin(),
functionAssociations: [
{
eventType: FunctionEventType.VIEWER_REQUEST,
function: new Function(stack, 'TestFunction', {
code: FunctionCode.fromInline('foo'),
}),
},
],
},
});
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
DefaultCacheBehavior: {
FunctionAssociations: [
{
EventType: 'viewer-request',
FunctionARN: {
'Fn::GetAtt': [
'TestFunction22AD90FC',
'FunctionARN',
],
},
},
],
},
},
});
});
});
test('price class is included if provided', () => {
const origin = defaultOrigin();
new Distribution(stack, 'Dist', {
defaultBehavior: { origin },
priceClass: PriceClass.PRICE_CLASS_200,
});
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
PriceClass: 'PriceClass_200',
},
});
});
test('escape hatches are supported', () => {
const dist = new Distribution(stack, 'Dist', {
defaultBehavior: { origin: defaultOrigin },
});
const cfnDist = dist.node.defaultChild as CfnDistribution;
cfnDist.addPropertyOverride('DistributionConfig.DefaultCacheBehavior.ForwardedValues.Headers', ['*']);
Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
DefaultCacheBehavior: {
ForwardedValues: {
Headers: ['*'],
},
},
},
});
});
describe('origin IDs', () => {
test('origin ID is limited to 128 characters', () => {
const nestedStack = new Stack(stack, 'LongNameThatWillEndUpGeneratingAUniqueNodeIdThatIsLongerThanTheOneHundredAndTwentyEightCharacterLimit');
new Distribution(nestedStack, 'AReallyAwesomeDistributionWithAMemorableNameThatIWillNeverForget', {
defaultBehavior: { origin: defaultOrigin() },
});
Template.fromStack(nestedStack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
Origins: [Match.objectLike({
Id: 'ngerThanTheOneHundredAndTwentyEightCharacterLimitAReallyAwesomeDistributionWithAMemorableNameThatIWillNeverForgetOrigin1D38031F9',
})],
},
});
});
test('origin group ID is limited to 128 characters', () => {
const nestedStack = new Stack(stack, 'LongNameThatWillEndUpGeneratingAUniqueNodeIdThatIsLongerThanTheOneHundredAndTwentyEightCharacterLimit');
new Distribution(nestedStack, 'AReallyAwesomeDistributionWithAMemorableNameThatIWillNeverForget', {
defaultBehavior: { origin: defaultOriginGroup() },
});
Template.fromStack(nestedStack).hasResourceProperties('AWS::CloudFront::Distribution', {
DistributionConfig: {
OriginGroups: {
Items: [Match.objectLike({
Id: 'hanTheOneHundredAndTwentyEightCharacterLimitAReallyAwesomeDistributionWithAMemorableNameThatIWillNeverForgetOriginGroup1B5CE3FE6',
})],
},
},
});
});
});
describe('custom origin ids', () => {
test('test that originId param is respected', () => {
const origin = defaultOrigin(undefined, 'custom-origin-id');
const distribution = new Distribution(stack, 'Http1Distribution', {
defaultBehavior: { origin },
additionalBehaviors: {
secondUsage: {
origin,
},
},