@aws-cdk/core
Version:
AWS Cloud Development Kit Core Library
221 lines • 30.8 kB
JavaScript
"use strict";
var _a;
Object.defineProperty(exports, "__esModule", { value: true });
exports.Resource = void 0;
const jsiiDeprecationWarnings = require("../.warnings.jsii.js");
const JSII_RTTI_SYMBOL_1 = Symbol.for("jsii.rtti");
const arn_1 = require("./arn");
const cfn_resource_1 = require("./cfn-resource");
const construct_compat_1 = require("./construct-compat");
const lazy_1 = require("./lazy");
const physical_name_generator_1 = require("./private/physical-name-generator");
const reference_1 = require("./reference");
const stack_1 = require("./stack");
const token_1 = require("./token");
const RESOURCE_SYMBOL = Symbol.for('@aws-cdk/core.Resource');
/**
* A construct which represents an AWS resource.
*/
class Resource extends construct_compat_1.Construct {
constructor(scope, id, props = {}) {
super(scope, id);
try {
jsiiDeprecationWarnings._aws_cdk_core_ResourceProps(props);
}
catch (error) {
if (process.env.JSII_DEBUG !== "1" && error.name === "DeprecationError") {
Error.captureStackTrace(error, Resource);
}
throw error;
}
if ((props.account !== undefined || props.region !== undefined) && props.environmentFromArn !== undefined) {
throw new Error(`Supply at most one of 'account'/'region' (${props.account}/${props.region}) and 'environmentFromArn' (${props.environmentFromArn})`);
}
Object.defineProperty(this, RESOURCE_SYMBOL, { value: true });
this.stack = stack_1.Stack.of(this);
const parsedArn = props.environmentFromArn ?
// Since we only want the region and account, NO_RESOURE_NAME is good enough
this.stack.splitArn(props.environmentFromArn, arn_1.ArnFormat.NO_RESOURCE_NAME)
: undefined;
this.env = {
account: props.account ?? parsedArn?.account ?? this.stack.account,
region: props.region ?? parsedArn?.region ?? this.stack.region,
};
let physicalName = props.physicalName;
if (props.physicalName && physical_name_generator_1.isGeneratedWhenNeededMarker(props.physicalName)) {
// auto-generate only if cross-env is required
this._physicalName = undefined;
this._allowCrossEnvironment = true;
physicalName = lazy_1.Lazy.string({ produce: () => this._physicalName });
}
else if (props.physicalName && !token_1.Token.isUnresolved(props.physicalName)) {
// concrete value specified by the user
this._physicalName = props.physicalName;
this._allowCrossEnvironment = true;
}
else {
// either undefined (deploy-time) or has tokens, which means we can't use for cross-env
this._physicalName = props.physicalName;
this._allowCrossEnvironment = false;
}
if (physicalName === undefined) {
physicalName = token_1.Token.asString(undefined);
}
this.physicalName = physicalName;
}
/**
* Check whether the given construct is a Resource
*/
static isResource(construct) {
try {
jsiiDeprecationWarnings._aws_cdk_core_IConstruct(construct);
}
catch (error) {
if (process.env.JSII_DEBUG !== "1" && error.name === "DeprecationError") {
Error.captureStackTrace(error, this.isResource);
}
throw error;
}
return construct !== null && typeof (construct) === 'object' && RESOURCE_SYMBOL in construct;
}
/**
* Called when this resource is referenced across environments
* (account/region) to order to request that a physical name will be generated
* for this resource during synthesis, so the resource can be referenced
* through it's absolute name/arn.
*
* @internal
*/
_enableCrossEnvironment() {
if (!this._allowCrossEnvironment) {
// error out - a deploy-time name cannot be used across environments
throw new Error(`Cannot use resource '${this.node.path}' in a cross-environment fashion, ` +
"the resource's physical name must be explicit set or use `PhysicalName.GENERATE_IF_NEEDED`");
}
if (!this._physicalName) {
this._physicalName = this.generatePhysicalName();
}
}
/**
* Apply the given removal policy to this resource
*
* The Removal Policy controls what happens to this resource when it stops
* being managed by CloudFormation, either because you've removed it from the
* CDK application or because you've made a change that requires the resource
* to be replaced.
*
* The resource can be deleted (`RemovalPolicy.DESTROY`), or left in your AWS
* account for data recovery and cleanup later (`RemovalPolicy.RETAIN`).
*/
applyRemovalPolicy(policy) {
try {
jsiiDeprecationWarnings._aws_cdk_core_RemovalPolicy(policy);
}
catch (error) {
if (process.env.JSII_DEBUG !== "1" && error.name === "DeprecationError") {
Error.captureStackTrace(error, this.applyRemovalPolicy);
}
throw error;
}
const child = this.node.defaultChild;
if (!child || !cfn_resource_1.CfnResource.isCfnResource(child)) {
throw new Error('Cannot apply RemovalPolicy: no child or not a CfnResource. Apply the removal policy on the CfnResource directly.');
}
child.applyRemovalPolicy(policy);
}
generatePhysicalName() {
return physical_name_generator_1.generatePhysicalName(this);
}
/**
* Returns an environment-sensitive token that should be used for the
* resource's "name" attribute (e.g. `bucket.bucketName`).
*
* Normally, this token will resolve to `nameAttr`, but if the resource is
* referenced across environments, it will be resolved to `this.physicalName`,
* which will be a concrete name.
*
* @param nameAttr The CFN attribute which resolves to the resource's name.
* Commonly this is the resource's `ref`.
*/
getResourceNameAttribute(nameAttr) {
return mimicReference(nameAttr, {
produce: (context) => {
const consumingStack = stack_1.Stack.of(context.scope);
if (this.stack.environment !== consumingStack.environment) {
this._enableCrossEnvironment();
return this.physicalName;
}
else {
return nameAttr;
}
},
});
}
/**
* Returns an environment-sensitive token that should be used for the
* resource's "ARN" attribute (e.g. `bucket.bucketArn`).
*
* Normally, this token will resolve to `arnAttr`, but if the resource is
* referenced across environments, `arnComponents` will be used to synthesize
* a concrete ARN with the resource's physical name. Make sure to reference
* `this.physicalName` in `arnComponents`.
*
* @param arnAttr The CFN attribute which resolves to the ARN of the resource.
* Commonly it will be called "Arn" (e.g. `resource.attrArn`), but sometimes
* it's the CFN resource's `ref`.
* @param arnComponents The format of the ARN of this resource. You must
* reference `this.physicalName` somewhere within the ARN in order for
* cross-environment references to work.
*
*/
getResourceArnAttribute(arnAttr, arnComponents) {
try {
jsiiDeprecationWarnings._aws_cdk_core_ArnComponents(arnComponents);
}
catch (error) {
if (process.env.JSII_DEBUG !== "1" && error.name === "DeprecationError") {
Error.captureStackTrace(error, this.getResourceArnAttribute);
}
throw error;
}
return mimicReference(arnAttr, {
produce: (context) => {
const consumingStack = stack_1.Stack.of(context.scope);
if (this.stack.environment !== consumingStack.environment) {
this._enableCrossEnvironment();
return this.stack.formatArn(arnComponents);
}
else {
return arnAttr;
}
},
});
}
}
exports.Resource = Resource;
_a = JSII_RTTI_SYMBOL_1;
Resource[_a] = { fqn: "@aws-cdk/core.Resource", version: "1.204.0" };
/**
* Produce a Lazy that is also a Reference (if the base value is a Reference).
*
* If the given value is a Reference (or resolves to a Reference), return a new
* Reference that mimics the same target and display name, but resolves using
* the logic of the passed lazy.
*
* If the given value is NOT a Reference, just return a simple Lazy.
*/
function mimicReference(refSource, producer) {
const reference = token_1.Tokenization.reverse(refSource, {
// If this is an ARN concatenation, just fail to extract a reference.
failConcat: false,
});
if (!reference_1.Reference.isReference(reference)) {
return lazy_1.Lazy.uncachedString(producer);
}
return token_1.Token.asString(new class extends reference_1.Reference {
resolve(context) {
return producer.produce(context);
}
}(reference, reference.target, reference.displayName));
}
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leave this as a separate section so it reduces merge conflicts when compat is removed\n// eslint-disable-next-line import/order\nimport { Construct } from 'constructs';\n\nconst RESOURCE_SYMBOL = Symbol.for('@aws-cdk/core.Resource');\n\n/**\n * Represents the environment a given resource lives in.\n * Used as the return value for the {@link IResource.env} property.\n */\nexport interface ResourceEnvironment {\n  /**\n   * The AWS account ID that this resource belongs to.\n   * Since this can be a Token\n   * (for example, when the account is CloudFormation's AWS::AccountId intrinsic),\n   * make sure to use Token.compareStrings()\n   * instead of just comparing the values for equality.\n   */\n  readonly account: string;\n\n  /**\n   * The AWS region that this resource belongs to.\n   * Since this can be a Token\n   * (for example, when the region is CloudFormation's AWS::Region intrinsic),\n   * make sure to use Token.compareStrings()\n   * instead of just comparing the values for equality.\n   */\n  readonly region: string;\n}\n\n/**\n * Interface for the Resource construct.\n */\nexport interface IResource extends IConstruct {\n  /**\n   * The stack in which this resource is defined.\n   */\n  readonly stack: Stack;\n\n  /**\n   * The environment this resource belongs to.\n   * For resources that are created and managed by the CDK\n   * (generally, those created by creating new class instances like Role, Bucket, etc.),\n   * this is always the same as the environment of the stack they belong to;\n   * however, for imported resources\n   * (those obtained from static methods like fromRoleArn, fromBucketName, etc.),\n   * that might be different than the stack they were imported into.\n   */\n  readonly env: ResourceEnvironment;\n\n  /**\n   * Apply the given removal policy to this resource\n   *\n   * The Removal Policy controls what happens to this resource when it stops\n   * being managed by CloudFormation, either because you've removed it from the\n   * CDK application or because you've made a change that requires the resource\n   * to be replaced.\n   *\n   * The resource can be deleted (`RemovalPolicy.DESTROY`), or left in your AWS\n   * account for data recovery and cleanup later (`RemovalPolicy.RETAIN`).\n   */\n  applyRemovalPolicy(policy: RemovalPolicy): void;\n}\n\n/**\n * Construction properties for {@link Resource}.\n */\nexport interface ResourceProps {\n  /**\n   * The value passed in by users to the physical name prop of the resource.\n   *\n   * - `undefined` implies that a physical name will be allocated by\n   *   CloudFormation during deployment.\n   * - a concrete value implies a specific physical name\n   * - `PhysicalName.GENERATE_IF_NEEDED` is a marker that indicates that a physical will only be generated\n   *   by the CDK if it is needed for cross-environment references. Otherwise, it will be allocated by CloudFormation.\n   *\n   * @default - The physical name will be allocated by CloudFormation at deployment time\n   */\n  readonly physicalName?: string;\n\n  /**\n   * The AWS account ID this resource belongs to.\n   *\n   * @default - the resource is in the same account as the stack it belongs to\n   */\n  readonly account?: string;\n\n  /**\n   * The AWS region this resource belongs to.\n   *\n   * @default - the resource is in the same region as the stack it belongs to\n   */\n  readonly region?: string;\n\n  /**\n   * ARN to deduce region and account from\n   *\n   * The ARN is parsed and the account and region are taken from the ARN.\n   * This should be used for imported resources.\n   *\n   * Cannot be supplied together with either `account` or `region`.\n   *\n   * @default - take environment from `account`, `region` parameters, or use Stack environment.\n   */\n  readonly environmentFromArn?: string;\n}\n\n/**\n * A construct which represents an AWS resource.\n */\nexport abstract class Resource extends CoreConstruct implements IResource {\n  /**\n   * Check whether the given construct is a Resource\n   */\n  public static isResource(construct: IConstruct): construct is CfnResource {\n    return construct !== null && typeof(construct) === 'object' && RESOURCE_SYMBOL in construct;\n  }\n\n  public readonly stack: Stack;\n  public readonly env: ResourceEnvironment;\n\n  /**\n   * Returns a string-encoded token that resolves to the physical name that\n   * should be passed to the CloudFormation resource.\n   *\n   * This value will resolve to one of the following:\n   * - a concrete value (e.g. `\"my-awesome-bucket\"`)\n   * - `undefined`, when a name should be generated by CloudFormation\n   * - a concrete name generated automatically during synthesis, in\n   *   cross-environment scenarios.\n   *\n   */\n  protected readonly physicalName: string;\n\n  private _physicalName: string | undefined;\n  private readonly _allowCrossEnvironment: boolean;\n\n  constructor(scope: Construct, id: string, props: ResourceProps = {}) {\n    super(scope, id);\n\n    if ((props.account !== undefined || props.region !== undefined) && props.environmentFromArn !== undefined) {\n      throw new Error(`Supply at most one of 'account'/'region' (${props.account}/${props.region}) and 'environmentFromArn' (${props.environmentFromArn})`);\n    }\n\n    Object.defineProperty(this, RESOURCE_SYMBOL, { value: true });\n\n    this.stack = Stack.of(this);\n\n    const parsedArn = props.environmentFromArn ?\n      // Since we only want the region and account, NO_RESOURE_NAME is good enough\n      this.stack.splitArn(props.environmentFromArn, ArnFormat.NO_RESOURCE_NAME)\n      : undefined;\n    this.env = {\n      account: props.account ?? parsedArn?.account ?? this.stack.account,\n      region: props.region ?? parsedArn?.region ?? this.stack.region,\n    };\n\n    let physicalName = props.physicalName;\n\n    if (props.physicalName && isGeneratedWhenNeededMarker(props.physicalName)) {\n      // auto-generate only if cross-env is required\n      this._physicalName = undefined;\n      this._allowCrossEnvironment = true;\n      physicalName = Lazy.string({ produce: () => this._physicalName });\n    } else if (props.physicalName && !Token.isUnresolved(props.physicalName)) {\n      // concrete value specified by the user\n      this._physicalName = props.physicalName;\n      this._allowCrossEnvironment = true;\n    } else {\n      // either undefined (deploy-time) or has tokens, which means we can't use for cross-env\n      this._physicalName = props.physicalName;\n      this._allowCrossEnvironment = false;\n    }\n\n    if (physicalName === undefined) {\n      physicalName = Token.asString(undefined);\n    }\n\n    this.physicalName = physicalName;\n  }\n\n  /**\n   * Called when this resource is referenced across environments\n   * (account/region) to order to request that a physical name will be generated\n   * for this resource during synthesis, so the resource can be referenced\n   * through it's absolute name/arn.\n   *\n   * @internal\n   */\n  public _enableCrossEnvironment(): void {\n    if (!this._allowCrossEnvironment) {\n      // error out - a deploy-time name cannot be used across environments\n      throw new Error(`Cannot use resource '${this.node.path}' in a cross-environment fashion, ` +\n        \"the resource's physical name must be explicit set or use `PhysicalName.GENERATE_IF_NEEDED`\");\n    }\n\n    if (!this._physicalName) {\n      this._physicalName = this.generatePhysicalName();\n    }\n  }\n\n  /**\n   * Apply the given removal policy to this resource\n   *\n   * The Removal Policy controls what happens to this resource when it stops\n   * being managed by CloudFormation, either because you've removed it from the\n   * CDK application or because you've made a change that requires the resource\n   * to be replaced.\n   *\n   * The resource can be deleted (`RemovalPolicy.DESTROY`), or left in your AWS\n   * account for data recovery and cleanup later (`RemovalPolicy.RETAIN`).\n   */\n  public applyRemovalPolicy(policy: RemovalPolicy) {\n    const child = this.node.defaultChild;\n    if (!child || !CfnResource.isCfnResource(child)) {\n      throw new Error('Cannot apply RemovalPolicy: no child or not a CfnResource. Apply the removal policy on the CfnResource directly.');\n    }\n    child.applyRemovalPolicy(policy);\n  }\n\n  protected generatePhysicalName(): string {\n    return generatePhysicalName(this);\n  }\n\n  /**\n   * Returns an environment-sensitive token that should be used for the\n   * resource's \"name\" attribute (e.g. `bucket.bucketName`).\n   *\n   * Normally, this token will resolve to `nameAttr`, but if the resource is\n   * referenced across environments, it will be resolved to `this.physicalName`,\n   * which will be a concrete name.\n   *\n   * @param nameAttr The CFN attribute which resolves to the resource's name.\n   * Commonly this is the resource's `ref`.\n   */\n  protected getResourceNameAttribute(nameAttr: string) {\n    return mimicReference(nameAttr, {\n      produce: (context: IResolveContext) => {\n        const consumingStack = Stack.of(context.scope);\n\n        if (this.stack.environment !== consumingStack.environment) {\n          this._enableCrossEnvironment();\n          return this.physicalName;\n        } else {\n          return nameAttr;\n        }\n      },\n    });\n  }\n\n  /**\n   * Returns an environment-sensitive token that should be used for the\n   * resource's \"ARN\" attribute (e.g. `bucket.bucketArn`).\n   *\n   * Normally, this token will resolve to `arnAttr`, but if the resource is\n   * referenced across environments, `arnComponents` will be used to synthesize\n   * a concrete ARN with the resource's physical name. Make sure to reference\n   * `this.physicalName` in `arnComponents`.\n   *\n   * @param arnAttr The CFN attribute which resolves to the ARN of the resource.\n   * Commonly it will be called \"Arn\" (e.g. `resource.attrArn`), but sometimes\n   * it's the CFN resource's `ref`.\n   * @param arnComponents The format of the ARN of this resource. You must\n   * reference `this.physicalName` somewhere within the ARN in order for\n   * cross-environment references to work.\n   *\n   */\n  protected getResourceArnAttribute(arnAttr: string, arnComponents: ArnComponents) {\n    return mimicReference(arnAttr, {\n      produce: (context: IResolveContext) => {\n        const consumingStack = Stack.of(context.scope);\n        if (this.stack.environment !== consumingStack.environment) {\n          this._enableCrossEnvironment();\n          return this.stack.formatArn(arnComponents);\n        } else {\n          return arnAttr;\n        }\n      },\n    });\n  }\n}\n\n/**\n * Produce a Lazy that is also a Reference (if the base value is a Reference).\n *\n * If the given value is a Reference (or resolves to a Reference), return a new\n * Reference that mimics the same target and display name, but resolves using\n * the logic of the passed lazy.\n *\n * If the given value is NOT a Reference, just return a simple Lazy.\n */\nfunction mimicReference(refSource: any, producer: IStringProducer): string {\n  const reference = Tokenization.reverse(refSource, {\n    // If this is an ARN concatenation, just fail to extract a reference.\n    failConcat: false,\n  });\n  if (!Reference.isReference(reference)) {\n    return Lazy.uncachedString(producer);\n  }\n\n  return Token.asString(new class extends Reference {\n    resolve(context: IResolveContext) {\n      return producer.produce(context);\n    }\n  }(reference, reference.target, reference.displayName));\n}\n"]}