@cdklabs/aws-data-solutions-framework
Version:
L3 CDK Constructs used to build data solutions with AWS
174 lines • 27 kB
JavaScript
"use strict";
var _a;
Object.defineProperty(exports, "__esModule", { value: true });
exports.DataVpc = void 0;
const JSII_RTTI_SYMBOL_1 = Symbol.for("jsii.rtti");
// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
const aws_cdk_lib_1 = require("aws-cdk-lib");
const aws_ec2_1 = require("aws-cdk-lib/aws-ec2");
const aws_iam_1 = require("aws-cdk-lib/aws-iam");
const aws_kms_1 = require("aws-cdk-lib/aws-kms");
const aws_logs_1 = require("aws-cdk-lib/aws-logs");
const constructs_1 = require("constructs");
const context_1 = require("./context");
/**
* Creates a VPC with best practices for securely deploying data solutions.
* @see https://awslabs.github.io/data-solutions-framework-on-aws/docs/constructs/library/Utils/data-vpc
*
* @example
*
* const vpc = new dsf.utils.DataVpc(this, 'DataVpc', {
* vpcCidr: '10.0.0.0/16',
* });
*
* vpc.tagVpc('Name', 'My VPC');
*/
class DataVpc extends constructs_1.Construct {
constructor(scope, id, props) {
super(scope, id);
const removalPolicy = context_1.Context.revertRemovalPolicy(scope, props.removalPolicy);
const retention = props.flowLogRetention || aws_logs_1.RetentionDays.ONE_WEEK;
this.flowLogKey = props.flowLogKey || new aws_kms_1.Key(this, 'FlowLogKey', {
description: 'vpc-logs-key',
enableKeyRotation: true,
removalPolicy: removalPolicy,
});
this.flowLogRole = props.flowLogRole || new aws_iam_1.Role(this, 'FlowLogRole', {
assumedBy: new aws_iam_1.ServicePrincipal('vpc-flow-logs.amazonaws.com'),
});
const vpcMask = parseInt(props.vpcCidr.split('/')[1]);
const smallestVpcCidr = 28;
if (vpcMask > smallestVpcCidr) {
throw new Error(`The VPC netmask should be at least 28, netmask provided is ${vpcMask}`);
}
// Calculate subnet masks based on VPC's mask
const publicSubnetMask = vpcMask + 4;
const privateSubnetMask = publicSubnetMask + 2; // twice as large as public subnet
// Calculate the number of NAT gateways based on the number of AZs in the region.
// CDK has default behaviour, if region is not detect at synth time it will limit to two AZs
// But if a region is detect we might have 4 or 6 AZs
// We need to limit to 3 NATs as default since the MAX AZ is 3
let defaultNumberOfNat = aws_cdk_lib_1.Stack.of(this).availabilityZones.length > 3 ?
3 : aws_cdk_lib_1.Stack.of(this).availabilityZones.length;
this.vpc = new aws_ec2_1.Vpc(this, 'Vpc', {
ipAddresses: aws_ec2_1.IpAddresses.cidr(props.vpcCidr),
maxAzs: 3,
natGateways: props.natGateways ?? defaultNumberOfNat,
subnetConfiguration: [
{
cidrMask: publicSubnetMask,
name: 'Public',
subnetType: aws_ec2_1.SubnetType.PUBLIC,
},
{
cidrMask: privateSubnetMask,
name: 'Private',
subnetType: aws_ec2_1.SubnetType.PRIVATE_WITH_EGRESS,
},
],
});
//Create VPC flow log for the VPC
this.flowLogGroup = new aws_logs_1.LogGroup(scope, 'FLowLogGroup', {
encryptionKey: this.flowLogKey,
retention,
removalPolicy: removalPolicy,
});
//Allow vpc flowlog to access KMS key to encrypt logs
this.flowLogKey.addToResourcePolicy(new aws_iam_1.PolicyStatement({
effect: aws_iam_1.Effect.ALLOW,
principals: [new aws_iam_1.ServicePrincipal(`logs.${aws_cdk_lib_1.Stack.of(scope).region}.amazonaws.com`)],
actions: [
'kms:Encrypt*',
'kms:Decrypt*',
'kms:ReEncrypt*',
'kms:GenerateDataKey*',
'kms:Describe*',
],
conditions: {
ArnLike: {
'kms:EncryptionContext:aws:logs:arn': `arn:aws:logs:${aws_cdk_lib_1.Stack.of(scope).region}:${aws_cdk_lib_1.Stack.of(scope).account}:*`,
},
},
resources: ['*'],
}));
this.vpc.addFlowLog('FlowLog', {
destination: aws_ec2_1.FlowLogDestination.toCloudWatchLogs(this.flowLogGroup, this.flowLogRole),
});
// Create a gateway endpoint for S3
this.s3VpcEndpoint = this.vpc.addGatewayEndpoint('S3VpcEndpoint', {
service: aws_ec2_1.GatewayVpcEndpointAwsService.S3,
});
// Create a Client VPN Endpoint
if (props.clientVpnEndpointProps) {
[this.vpnSecurityGroups, this.vpnLogGroup, this.clientVpnEndpoint] = this.setupClientVpn(scope, props, removalPolicy, retention);
}
}
/**
* Tag the VPC and the subnets
* @param key the tag key
* @param value the tag value
*/
tagVpc(key, value) {
// Add tags to subnets
for (let subnet of [...this.vpc.publicSubnets, ...this.vpc.privateSubnets]) {
aws_cdk_lib_1.Tags.of(subnet).add(key, value);
}
// Add tags to vpc
aws_cdk_lib_1.Tags.of(this.vpc).add(key, value);
}
/**
* @internal
* Configure Client VPN Endpoint
* @param scope current scope
* @param props DataVpcProps
* @param removalPolicy RemovalPolicy
* @param retention RetentionDays for Cloudwatch log group
* @returns [ISecurityGroup[], ILogGroup, ClientVpnEndpoint] created ClientVpnEndpoint alongside with security group and log group.
*/
setupClientVpn(scope, props, removalPolicy, retention) {
const vpnSamlProvider = new aws_iam_1.SamlProvider(scope, 'SamlProviderVpnEndpoint', {
metadataDocument: aws_iam_1.SamlMetadataDocument.fromXml(props.clientVpnEndpointProps.samlMetadataDocument),
});
const endpointProps = {
...props.clientVpnEndpointProps,
vpnSubnets: this.vpc.selectSubnets({ onePerAz: true, subnetType: aws_ec2_1.SubnetType.PRIVATE_WITH_EGRESS }),
userBasedAuthentication: aws_ec2_1.ClientVpnUserBasedAuthentication.federated(vpnSamlProvider),
cidr: this.vpc.publicSubnets[0].ipv4CidrBlock,
};
endpointProps.logging ?? (endpointProps.logging = true);
endpointProps.transportProtocol ?? (endpointProps.transportProtocol = aws_ec2_1.TransportProtocol.TCP);
endpointProps.splitTunnel ?? (endpointProps.splitTunnel = true);
endpointProps.dnsServers ?? (endpointProps.dnsServers = [props.vpcCidr.replace(/^(\d+)\.(\d+)\.(\d+)\.\d+\/\d+$/, '$1.$2.$3.2')]);
endpointProps.authorizeAllUsersToVpcCidr ?? (endpointProps.authorizeAllUsersToVpcCidr = true);
endpointProps.port ?? (endpointProps.port = aws_ec2_1.VpnPort.HTTPS);
endpointProps.selfServicePortal ?? (endpointProps.selfServicePortal = true);
if (!endpointProps.securityGroups) {
const vpnSecurityGroup = new aws_ec2_1.SecurityGroup(scope, 'vpnSecurityGroup', {
vpc: this.vpc,
allowAllOutbound: false,
});
vpnSecurityGroup.addIngressRule(aws_ec2_1.Peer.ipv4(props.vpcCidr), (endpointProps.transportProtocol == aws_ec2_1.TransportProtocol.TCP) ?
aws_ec2_1.Port.tcp(endpointProps.port) : aws_ec2_1.Port.udp(endpointProps.port));
vpnSecurityGroup.addEgressRule(aws_ec2_1.Peer.anyIpv4(), aws_ec2_1.Port.tcp(443));
vpnSecurityGroup.applyRemovalPolicy(removalPolicy);
endpointProps.securityGroups = [vpnSecurityGroup];
}
;
if (!endpointProps.logGroup) {
const vpnLogGroup = new aws_logs_1.LogGroup(scope, 'vpnLogGroup', {
encryptionKey: this.flowLogKey,
retention,
removalPolicy: removalPolicy,
});
endpointProps.logGroup = vpnLogGroup;
}
const clientVpnEndpoint = this.vpc.addClientVpnEndpoint('Endpoint', endpointProps);
clientVpnEndpoint.applyRemovalPolicy(removalPolicy);
return [endpointProps.securityGroups, endpointProps.logGroup, clientVpnEndpoint];
}
}
exports.DataVpc = DataVpc;
_a = JSII_RTTI_SYMBOL_1;
DataVpc[_a] = { fqn: "@cdklabs/aws-data-solutions-framework.utils.DataVpc", version: "1.21.3" };
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Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.\n// SPDX-License-Identifier: Apache-2.0\n\nimport { RemovalPolicy, Stack, Tags } from 'aws-cdk-lib';\nimport {\n  ClientVpnEndpoint, ClientVpnEndpointOptions, ClientVpnUserBasedAuthentication,\n  FlowLogDestination, GatewayVpcEndpointAwsService, IGatewayVpcEndpoint,\n  ISecurityGroup, IpAddresses, Peer, Port, SecurityGroup, SubnetType,\n  TransportProtocol, Vpc, VpnPort,\n} from 'aws-cdk-lib/aws-ec2';\nimport { Effect, IRole, PolicyStatement, Role, SamlMetadataDocument, SamlProvider, ServicePrincipal } from 'aws-cdk-lib/aws-iam';\nimport { IKey, Key } from 'aws-cdk-lib/aws-kms';\nimport { ILogGroup, LogGroup, RetentionDays } from 'aws-cdk-lib/aws-logs';\nimport { Construct } from 'constructs';\nimport { Context } from './context';\nimport { DataVpcProps } from './data-vpc-props';\n\n/**\n * Creates a VPC with best practices for securely deploying data solutions.\n * @see https://awslabs.github.io/data-solutions-framework-on-aws/docs/constructs/library/Utils/data-vpc\n *\n * @example\n *\n * const vpc = new dsf.utils.DataVpc(this, 'DataVpc', {\n *   vpcCidr: '10.0.0.0/16',\n * });\n *\n * vpc.tagVpc('Name', 'My VPC');\n */\nexport class DataVpc extends Construct {\n\n  /**\n   * The amazon VPC created\n   */\n  public readonly vpc: Vpc;\n  /**\n   * The KMS Key used to encrypt VPC flow logs\n   */\n  public readonly flowLogKey: IKey;\n  /**\n   * The IAM role used to publish VPC Flow Logs\n   */\n  public readonly flowLogRole: IRole;\n  /**\n   * The CloudWatch Log Group created for the VPC flow logs\n   */\n  public readonly flowLogGroup: ILogGroup;\n  /**\n   * The S3 VPC endpoint gateway\n   */\n  public readonly s3VpcEndpoint: IGatewayVpcEndpoint;\n  /**\n   * The Client VPN Endpoint\n   */\n  public readonly clientVpnEndpoint: ClientVpnEndpoint | undefined;\n\n  /**\n   * The log group for Client VPN Endpoint\n   */\n  public readonly vpnLogGroup: ILogGroup | undefined;\n  /**\n   * The security group for Client VPN Endpoint\n   */\n  public readonly vpnSecurityGroups: ISecurityGroup[] | undefined;\n\n\n  constructor(scope: Construct, id: string, props: DataVpcProps) {\n\n    super(scope, id);\n\n    const removalPolicy = Context.revertRemovalPolicy(scope, props.removalPolicy);\n\n    const retention = props.flowLogRetention || RetentionDays.ONE_WEEK;\n\n    this.flowLogKey = props.flowLogKey || new Key(this, 'FlowLogKey', {\n      description: 'vpc-logs-key',\n      enableKeyRotation: true,\n      removalPolicy: removalPolicy,\n    });\n\n    this.flowLogRole = props.flowLogRole || new Role(this, 'FlowLogRole', {\n      assumedBy: new ServicePrincipal('vpc-flow-logs.amazonaws.com'),\n    });\n\n    const vpcMask = parseInt(props.vpcCidr.split('/')[1]);\n    const smallestVpcCidr: number = 28;\n    if (vpcMask > smallestVpcCidr) {\n      throw new Error(`The VPC netmask should be at least 28, netmask provided is ${vpcMask}`);\n    }\n\n\n    // Calculate subnet masks based on VPC's mask\n    const publicSubnetMask = vpcMask + 4;\n    const privateSubnetMask = publicSubnetMask + 2; // twice as large as public subnet\n\n    // Calculate the number of NAT gateways based on the number of AZs in the region.\n    // CDK has default behaviour, if region is not detect at synth time it will limit to two AZs\n    // But if a region is detect we might have 4 or 6 AZs\n    // We need to limit to 3 NATs as default since the MAX AZ is 3\n    let defaultNumberOfNat =\n      Stack.of(this).availabilityZones.length >3 ?\n        3 : Stack.of(this).availabilityZones.length;\n\n    this.vpc = new Vpc(this, 'Vpc', {\n      ipAddresses: IpAddresses.cidr(props.vpcCidr),\n      maxAzs: 3,\n      natGateways: props.natGateways ?? defaultNumberOfNat,\n      subnetConfiguration: [\n        {\n          cidrMask: publicSubnetMask,\n          name: 'Public',\n          subnetType: SubnetType.PUBLIC,\n        },\n        {\n          cidrMask: privateSubnetMask,\n          name: 'Private',\n          subnetType: SubnetType.PRIVATE_WITH_EGRESS,\n        },\n      ],\n    });\n\n    //Create VPC flow log for the VPC\n    this.flowLogGroup = new LogGroup(scope, 'FLowLogGroup', {\n      encryptionKey: this.flowLogKey,\n      retention,\n      removalPolicy: removalPolicy,\n    });\n\n    //Allow vpc flowlog to access KMS key to encrypt logs\n    this.flowLogKey.addToResourcePolicy(\n      new PolicyStatement({\n        effect: Effect.ALLOW,\n        principals: [new ServicePrincipal(`logs.${Stack.of(scope).region}.amazonaws.com`)],\n        actions: [\n          'kms:Encrypt*',\n          'kms:Decrypt*',\n          'kms:ReEncrypt*',\n          'kms:GenerateDataKey*',\n          'kms:Describe*',\n        ],\n        conditions: {\n          ArnLike: {\n            'kms:EncryptionContext:aws:logs:arn': `arn:aws:logs:${Stack.of(scope).region}:${Stack.of(scope).account}:*`,\n          },\n        },\n        resources: ['*'],\n      }),\n    );\n\n    this.vpc.addFlowLog('FlowLog', {\n      destination: FlowLogDestination.toCloudWatchLogs(this.flowLogGroup, this.flowLogRole),\n    });\n\n    // Create a gateway endpoint for S3\n    this.s3VpcEndpoint= this.vpc.addGatewayEndpoint('S3VpcEndpoint', {\n      service: GatewayVpcEndpointAwsService.S3,\n    });\n\n    // Create a Client VPN Endpoint\n    if (props.clientVpnEndpointProps) {\n      [this.vpnSecurityGroups, this.vpnLogGroup, this.clientVpnEndpoint] = this.setupClientVpn(scope, props, removalPolicy, retention);\n    }\n  }\n\n  /**\n   * Tag the VPC and the subnets\n   * @param key the tag key\n   * @param value the tag value\n   */\n  public tagVpc(key: string, value: string) {\n    // Add tags to subnets\n    for (let subnet of [...this.vpc.publicSubnets, ...this.vpc.privateSubnets]) {\n      Tags.of(subnet).add(key, value);\n    }\n    // Add tags to vpc\n    Tags.of(this.vpc).add(key, value);\n  }\n\n  /**\n   * @internal\n   * Configure Client VPN Endpoint\n   * @param scope current scope\n   * @param props DataVpcProps\n   * @param removalPolicy RemovalPolicy\n   * @param retention RetentionDays for Cloudwatch log group\n   * @returns [ISecurityGroup[], ILogGroup, ClientVpnEndpoint] created ClientVpnEndpoint alongside with security group and log group.\n   */\n  private setupClientVpn(scope:Construct, props:DataVpcProps, removalPolicy:RemovalPolicy, retention:RetentionDays):\n  [ISecurityGroup[], ILogGroup, ClientVpnEndpoint] {\n\n    const vpnSamlProvider = new SamlProvider(scope, 'SamlProviderVpnEndpoint', {\n      metadataDocument: SamlMetadataDocument.fromXml(props.clientVpnEndpointProps!.samlMetadataDocument),\n    });\n\n    const endpointProps = {\n      ...props.clientVpnEndpointProps,\n      vpnSubnets: this.vpc.selectSubnets({ onePerAz: true, subnetType: SubnetType.PRIVATE_WITH_EGRESS }),\n      userBasedAuthentication: ClientVpnUserBasedAuthentication.federated(vpnSamlProvider),\n      cidr: this.vpc.publicSubnets[0].ipv4CidrBlock,\n    };\n\n    endpointProps.logging ??= true;\n    endpointProps.transportProtocol ??= TransportProtocol.TCP;\n    endpointProps.splitTunnel ??= true;\n    endpointProps.dnsServers ??= [props.vpcCidr.replace(/^(\\d+)\\.(\\d+)\\.(\\d+)\\.\\d+\\/\\d+$/, '$1.$2.$3.2')];\n    endpointProps.authorizeAllUsersToVpcCidr ??= true;\n    endpointProps.port ??= VpnPort.HTTPS;\n    endpointProps.selfServicePortal ??= true;\n\n    if (!endpointProps.securityGroups) {\n      const vpnSecurityGroup = new SecurityGroup(scope, 'vpnSecurityGroup', {\n        vpc: this.vpc,\n        allowAllOutbound: false,\n      });\n      vpnSecurityGroup.addIngressRule(\n        Peer.ipv4(props.vpcCidr),\n        (endpointProps.transportProtocol == TransportProtocol.TCP) ?\n          Port.tcp(endpointProps.port) : Port.udp(endpointProps.port),\n      );\n      vpnSecurityGroup.addEgressRule(Peer.anyIpv4(), Port.tcp(443));\n      vpnSecurityGroup.applyRemovalPolicy(removalPolicy);\n      endpointProps.securityGroups = [vpnSecurityGroup];\n    };\n\n    if (!endpointProps.logGroup) {\n      const vpnLogGroup = new LogGroup(scope, 'vpnLogGroup', {\n        encryptionKey: this.flowLogKey,\n        retention,\n        removalPolicy: removalPolicy,\n      });\n      endpointProps.logGroup = vpnLogGroup;\n    }\n\n    const clientVpnEndpoint = this.vpc.addClientVpnEndpoint('Endpoint', endpointProps as ClientVpnEndpointOptions);\n\n    clientVpnEndpoint.applyRemovalPolicy(removalPolicy);\n\n    return [endpointProps.securityGroups, endpointProps.logGroup, clientVpnEndpoint];\n  }\n}"]}