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// Network infrastructure
const vpc = new Vpc(this, 'VPC', { maxAzs: 2 });
const cluster = new Cluster(this, 'Cluster', {
clusterName: props.domainName.replace(/\./g, '-'),
vpc
});
// Configuration parameters
const domainZone = HostedZone.fromLookup(this, 'Zone', { domainName: props.domainZone });
const imageRepo = Repository.fromRepositoryName(this, 'Repo', 'reinvent-trivia-backend');
const tag = (process.env.IMAGE_TAG) ? process.env.IMAGE_TAG : 'latest';
const image = ContainerImage.fromEcrRepository(imageRepo, tag)
// Lookup pre-existing TLS certificate
const certificateArn = StringParameter.fromStringParameterAttributes(this, 'CertArnParameter', {
parameterName: 'CertificateArn-' + props.domainName
}).stringValue;
const certificate = Certificate.fromCertificateArn(this, 'Cert', certificateArn);
// Fargate service + load balancer
new ApplicationLoadBalancedFargateService(this, 'Service', {
cluster,
taskImageOptions: { image },
desiredCount: 3,
domainName: props.domainName,
domainZone,
certificate
});
}
}
constructor(parent: cdk.App, name: string, props: TriviaBackendStackProps) {
super(parent, name, props);
// Network infrastructure
const vpc = new Vpc(this, 'VPC', { maxAzs: 2 });
const serviceSG = new SecurityGroup(this, 'ServiceSecurityGroup', { vpc });
// Lookup pre-existing TLS certificate
const certificateArn = StringParameter.fromStringParameterAttributes(this, 'CertArnParameter', {
parameterName: 'CertificateArn-' + props.domainName
}).stringValue;
// Load balancer
const loadBalancer = new ApplicationLoadBalancer(this, 'ServiceLB', {
vpc,
internetFacing: true
});
serviceSG.connections.allowFrom(loadBalancer, Port.tcp(80));
const domainZone = HostedZone.fromLookup(this, 'Zone', { domainName: props.domainZone });
new ARecord(this, "DNS", {
zone: domainZone,
recordName: props.domainName,
target: AddressRecordTarget.fromAlias(new LoadBalancerTarget(loadBalancer)),
});