@aws-cdk/aws-ec2
Version:
The CDK Construct Library for AWS::EC2
150 lines • 14.2 kB
JavaScript
;
var _a;
Object.defineProperty(exports, "__esModule", { value: true });
exports.SubnetFilter = void 0;
const JSII_RTTI_SYMBOL_1 = Symbol.for("jsii.rtti");
const network_util_1 = require("./network-util");
/**
* Contains logic which chooses a set of subnets from a larger list, in conjunction
* with SubnetSelection, to determine where to place AWS resources such as VPC
* endpoints, EC2 instances, etc.
*/
class SubnetFilter {
/**
* Chooses subnets by id.
*/
static byIds(subnetIds) {
return new SubnetIdSubnetFilter(subnetIds);
}
/**
* Chooses subnets which are in one of the given availability zones.
*/
static availabilityZones(availabilityZones) {
return new AvailabilityZoneSubnetFilter(availabilityZones);
}
/**
* Chooses subnets such that there is at most one per availability zone.
*/
static onePerAz() {
return new OnePerAZSubnetFilter();
}
/**
* Chooses subnets which contain any of the specified IP addresses.
*/
static containsIpAddresses(ipv4addrs) {
return new ContainsIpAddressesSubnetFilter(ipv4addrs);
}
/**
* Chooses subnets which have the provided CIDR netmask.
*/
static byCidrMask(mask) {
return new CidrMaskSubnetFilter(mask);
}
/**
* Executes the subnet filtering logic, returning a filtered set of subnets.
*/
selectSubnets(_subnets) {
throw new Error('Cannot select subnets with an abstract SubnetFilter. `selectSubnets` needs to be implmemented.');
}
}
exports.SubnetFilter = SubnetFilter;
_a = JSII_RTTI_SYMBOL_1;
SubnetFilter[_a] = { fqn: "@aws-cdk/aws-ec2.SubnetFilter", version: "1.204.0" };
/**
* Chooses subnets which are in one of the given availability zones.
*/
class AvailabilityZoneSubnetFilter extends SubnetFilter {
constructor(availabilityZones) {
super();
this.availabilityZones = availabilityZones;
}
/**
* Executes the subnet filtering logic.
*/
selectSubnets(subnets) {
return subnets.filter(s => this.availabilityZones.includes(s.availabilityZone));
}
}
/**
* Chooses subnets such that there is at most one per availability zone.
*/
class OnePerAZSubnetFilter extends SubnetFilter {
constructor() {
super();
}
/**
* Executes the subnet filtering logic.
*/
selectSubnets(subnets) {
return this.retainOnePerAz(subnets);
}
retainOnePerAz(subnets) {
const azsSeen = new Set();
return subnets.filter(subnet => {
if (azsSeen.has(subnet.availabilityZone)) {
return false;
}
azsSeen.add(subnet.availabilityZone);
return true;
});
}
}
/**
* Chooses subnets which contain any of the specified IP addresses.
*/
class ContainsIpAddressesSubnetFilter extends SubnetFilter {
constructor(ipAddresses) {
super();
this.ipAddresses = ipAddresses;
}
/**
* Executes the subnet filtering logic.
*/
selectSubnets(subnets) {
return this.retainByIp(subnets, this.ipAddresses);
}
retainByIp(subnets, ips) {
const cidrBlockObjs = ips.map(ip => {
const ipNum = network_util_1.NetworkUtils.ipToNum(ip);
return new network_util_1.CidrBlock(ipNum, 32);
});
return subnets.filter(s => {
const subnetCidrBlock = new network_util_1.CidrBlock(s.ipv4CidrBlock);
return cidrBlockObjs.some(cidr => subnetCidrBlock.containsCidr(cidr));
});
}
}
/**
* Chooses subnets based on the subnetId
*/
class SubnetIdSubnetFilter extends SubnetFilter {
constructor(subnetIds) {
super();
this.subnetIds = subnetIds;
}
/**
* Executes the subnet filtering logic.
*/
selectSubnets(subnets) {
return subnets.filter(subnet => this.subnetIds.includes(subnet.subnetId));
}
}
/**
* Chooses subnets based on the CIDR Netmask
*/
class CidrMaskSubnetFilter extends SubnetFilter {
constructor(mask) {
super();
this.mask = mask;
}
/**
* Executes the subnet filtering logic.
*/
selectSubnets(subnets) {
return subnets.filter(subnet => {
const subnetCidr = new network_util_1.CidrBlock(subnet.ipv4CidrBlock);
return subnetCidr.mask === this.mask;
});
}
}
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{ CidrBlock, NetworkUtils } from './network-util';\nimport { ISubnet } from './vpc';\n\n/**\n * Contains logic which chooses a set of subnets from a larger list, in conjunction\n * with SubnetSelection, to determine where to place AWS resources such as VPC\n * endpoints, EC2 instances, etc.\n */\nexport abstract class SubnetFilter {\n\n  /**\n   * Chooses subnets by id.\n   */\n  public static byIds(subnetIds: string[]): SubnetFilter {\n    return new SubnetIdSubnetFilter(subnetIds);\n  }\n\n  /**\n   * Chooses subnets which are in one of the given availability zones.\n  */\n  public static availabilityZones(availabilityZones: string[]): SubnetFilter {\n    return new AvailabilityZoneSubnetFilter(availabilityZones);\n  }\n\n  /**\n   * Chooses subnets such that there is at most one per availability zone.\n  */\n  public static onePerAz(): SubnetFilter {\n    return new OnePerAZSubnetFilter();\n  }\n\n  /**\n   * Chooses subnets which contain any of the specified IP addresses.\n  */\n  public static containsIpAddresses(ipv4addrs: string[]): SubnetFilter {\n    return new ContainsIpAddressesSubnetFilter(ipv4addrs);\n  }\n\n  /**\n   * Chooses subnets which have the provided CIDR netmask.\n   */\n  public static byCidrMask(mask: number): SubnetFilter {\n    return new CidrMaskSubnetFilter(mask);\n  }\n\n  /**\n   * Executes the subnet filtering logic, returning a filtered set of subnets.\n   */\n  public selectSubnets(_subnets: ISubnet[]): ISubnet[] {\n    throw new Error('Cannot select subnets with an abstract SubnetFilter. `selectSubnets` needs to be implmemented.');\n  }\n}\n\n/**\n * Chooses subnets which are in one of the given availability zones.\n */\nclass AvailabilityZoneSubnetFilter extends SubnetFilter {\n\n  private readonly availabilityZones: string[];\n\n  constructor(availabilityZones: string[]) {\n    super();\n    this.availabilityZones = availabilityZones;\n  }\n\n  /**\n   * Executes the subnet filtering logic.\n   */\n  public selectSubnets(subnets: ISubnet[]): ISubnet[] {\n    return subnets.filter(s => this.availabilityZones.includes(s.availabilityZone));\n  }\n}\n\n/**\n * Chooses subnets such that there is at most one per availability zone.\n */\nclass OnePerAZSubnetFilter extends SubnetFilter {\n\n  constructor() {\n    super();\n  }\n\n  /**\n   * Executes the subnet filtering logic.\n   */\n  public selectSubnets(subnets: ISubnet[]): ISubnet[] {\n    return this.retainOnePerAz(subnets);\n  }\n\n  private retainOnePerAz(subnets: ISubnet[]): ISubnet[] {\n    const azsSeen = new Set<string>();\n    return subnets.filter(subnet => {\n      if (azsSeen.has(subnet.availabilityZone)) { return false; }\n      azsSeen.add(subnet.availabilityZone);\n      return true;\n    });\n  }\n}\n\n/**\n * Chooses subnets which contain any of the specified IP addresses.\n */\nclass ContainsIpAddressesSubnetFilter extends SubnetFilter {\n\n  private readonly ipAddresses: string[];\n\n  constructor(ipAddresses: string[]) {\n    super();\n    this.ipAddresses = ipAddresses;\n  }\n\n  /**\n   * Executes the subnet filtering logic.\n   */\n  public selectSubnets(subnets: ISubnet[]): ISubnet[] {\n    return this.retainByIp(subnets, this.ipAddresses);\n  }\n\n  private retainByIp(subnets: ISubnet[], ips: string[]): ISubnet[] {\n    const cidrBlockObjs = ips.map(ip => {\n      const ipNum = NetworkUtils.ipToNum(ip);\n      return new CidrBlock(ipNum, 32);\n    });\n    return subnets.filter(s => {\n      const subnetCidrBlock = new CidrBlock(s.ipv4CidrBlock);\n      return cidrBlockObjs.some(cidr => subnetCidrBlock.containsCidr(cidr));\n    });\n  }\n}\n\n/**\n * Chooses subnets based on the subnetId\n */\nclass SubnetIdSubnetFilter extends SubnetFilter {\n\n  private readonly subnetIds: string[];\n\n  constructor(subnetIds: string[]) {\n    super();\n    this.subnetIds = subnetIds;\n  }\n\n  /**\n   * Executes the subnet filtering logic.\n   */\n  public selectSubnets(subnets: ISubnet[]): ISubnet[] {\n    return subnets.filter(subnet => this.subnetIds.includes(subnet.subnetId));\n  }\n}\n\n/**\n * Chooses subnets based on the CIDR Netmask\n */\nclass CidrMaskSubnetFilter extends SubnetFilter {\n  private readonly mask: number\n\n  constructor(mask: number) {\n    super();\n    this.mask = mask;\n  }\n\n  /**\n   * Executes the subnet filtering logic.\n   */\n  public selectSubnets(subnets: ISubnet[]): ISubnet[] {\n    return subnets.filter(subnet => {\n      const subnetCidr = new CidrBlock(subnet.ipv4CidrBlock);\n      return subnetCidr.mask === this.mask;\n    });\n  }\n}\n"]}