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1"use strict";
2var _a, _b, _c, _d;
3Object.defineProperty(exports, "__esModule", { value: true });
4exports.AwsCustomResource = exports.AwsCustomResourcePolicy = exports.PhysicalResourceId = exports.PhysicalResourceIdReference = void 0;
5const jsiiDeprecationWarnings = require("../../.warnings.jsii.js");
6const JSII_RTTI_SYMBOL_1 = Symbol.for("jsii.rtti");
7const fs = require("fs");
8const path = require("path");
9const iam = require("@aws-cdk/aws-iam");
10const lambda = require("@aws-cdk/aws-lambda");
11const cdk = require("@aws-cdk/core");
12const runtime_1 = require("./runtime");
13// keep this import separate from other imports to reduce chance for merge conflicts with v2-main
14// eslint-disable-next-line no-duplicate-imports, import/order
15const core_1 = require("@aws-cdk/core");
16/**
17 * Reference to the physical resource id that can be passed to the AWS operation as a parameter.
18 */
19class PhysicalResourceIdReference {
20 constructor() {
21 this.creationStack = cdk.captureStackTrace();
22 }
23 /**
24 * toJSON serialization to replace `PhysicalResourceIdReference` with a magic string.
25 */
26 toJSON() {
27 return runtime_1.PHYSICAL_RESOURCE_ID_REFERENCE;
28 }
29 resolve(_) {
30 return runtime_1.PHYSICAL_RESOURCE_ID_REFERENCE;
31 }
32 toString() {
33 return runtime_1.PHYSICAL_RESOURCE_ID_REFERENCE;
34 }
35}
36exports.PhysicalResourceIdReference = PhysicalResourceIdReference;
37_a = JSII_RTTI_SYMBOL_1;
38PhysicalResourceIdReference[_a] = { fqn: "@aws-cdk/custom-resources.PhysicalResourceIdReference", version: "1.191.0" };
39/**
40 * Physical ID of the custom resource.
41 */
42class PhysicalResourceId {
43 /**
44 * @param responsePath Path to a response data element to be used as the physical id.
45 * @param id Literal string to be used as the physical id.
46 */
47 constructor(responsePath, id) {
48 this.responsePath = responsePath;
49 this.id = id;
50 }
51 /**
52 * Extract the physical resource id from the path (dot notation) to the data in the API call response.
53 */
54 static fromResponse(responsePath) {
55 return new PhysicalResourceId(responsePath, undefined);
56 }
57 /**
58 * Explicit physical resource id.
59 */
60 static of(id) {
61 return new PhysicalResourceId(undefined, id);
62 }
63}
64exports.PhysicalResourceId = PhysicalResourceId;
65_b = JSII_RTTI_SYMBOL_1;
66PhysicalResourceId[_b] = { fqn: "@aws-cdk/custom-resources.PhysicalResourceId", version: "1.191.0" };
67/**
68 * The IAM Policy that will be applied to the different calls.
69 */
70class AwsCustomResourcePolicy {
71 /**
72 * @param statements statements for explicit policy.
73 * @param resources resources for auto-generated from SDK calls.
74 */
75 constructor(statements, resources) {
76 this.statements = statements;
77 this.resources = resources;
78 }
79 /**
80 * Explicit IAM Policy Statements.
81 *
82 * @param statements the statements to propagate to the SDK calls.
83 */
84 static fromStatements(statements) {
85 return new AwsCustomResourcePolicy(statements, undefined);
86 }
87 /**
88 * Generate IAM Policy Statements from the configured SDK calls.
89 *
90 * Each SDK call with be translated to an IAM Policy Statement in the form of: `call.service:call.action` (e.g `s3:PutObject`).
91 *
92 * This policy generator assumes the IAM policy name has the same name as the API
93 * call. This is true in 99% of cases, but there are exceptions (for example,
94 * S3's `PutBucketLifecycleConfiguration` requires
95 * `s3:PutLifecycleConfiguration` permissions, Lambda's `Invoke` requires
96 * `lambda:InvokeFunction` permissions). Use `fromStatements` if you want to
97 * do a call that requires different IAM action names.
98 *
99 * @param options options for the policy generation
100 */
101 static fromSdkCalls(options) {
102 try {
103 jsiiDeprecationWarnings._aws_cdk_custom_resources_SdkCallsPolicyOptions(options);
104 }
105 catch (error) {
106 if (process.env.JSII_DEBUG !== "1" && error.name === "DeprecationError") {
107 Error.captureStackTrace(error, this.fromSdkCalls);
108 }
109 throw error;
110 }
111 return new AwsCustomResourcePolicy([], options.resources);
112 }
113}
114exports.AwsCustomResourcePolicy = AwsCustomResourcePolicy;
115_c = JSII_RTTI_SYMBOL_1;
116AwsCustomResourcePolicy[_c] = { fqn: "@aws-cdk/custom-resources.AwsCustomResourcePolicy", version: "1.191.0" };
117/**
118 * Use this constant to configure access to any resource.
119 */
120AwsCustomResourcePolicy.ANY_RESOURCE = ['*'];
121/**
122 * Defines a custom resource that is materialized using specific AWS API calls. These calls are created using
123 * a singleton Lambda function.
124 *
125 * Use this to bridge any gap that might exist in the CloudFormation Coverage.
126 * You can specify exactly which calls are invoked for the 'CREATE', 'UPDATE' and 'DELETE' life cycle events.
127 *
128 */
129class AwsCustomResource extends core_1.Construct {
130 // 'props' cannot be optional, even though all its properties are optional.
131 // this is because at least one sdk call must be provided.
132 constructor(scope, id, props) {
133 super(scope, id);
134 try {
135 jsiiDeprecationWarnings._aws_cdk_custom_resources_AwsCustomResourceProps(props);
136 }
137 catch (error) {
138 if (process.env.JSII_DEBUG !== "1" && error.name === "DeprecationError") {
139 Error.captureStackTrace(error, AwsCustomResource);
140 }
141 throw error;
142 }
143 if (!props.onCreate && !props.onUpdate && !props.onDelete) {
144 throw new Error('At least `onCreate`, `onUpdate` or `onDelete` must be specified.');
145 }
146 for (const call of [props.onCreate, props.onUpdate]) {
147 if (call && !call.physicalResourceId) {
148 throw new Error('`physicalResourceId` must be specified for onCreate and onUpdate calls.');
149 }
150 }
151 for (const call of [props.onCreate, props.onUpdate, props.onDelete]) {
152 if (call?.physicalResourceId?.responsePath) {
153 AwsCustomResource.breakIgnoreErrorsCircuit([call], 'PhysicalResourceId.fromResponse');
154 }
155 }
156 if (includesPhysicalResourceIdRef(props.onCreate?.parameters)) {
157 throw new Error('`PhysicalResourceIdReference` must not be specified in `onCreate` parameters.');
158 }
159 this.props = props;
160 const provider = new lambda.SingletonFunction(this, 'Provider', {
161 code: lambda.Code.fromAsset(path.join(__dirname, 'runtime'), {
162 exclude: ['*.ts'],
163 }),
164 runtime: lambda.Runtime.NODEJS_14_X,
165 handler: 'index.handler',
166 uuid: '679f53fa-c002-430c-b0da-5b7982bd2287',
167 lambdaPurpose: 'AWS',
168 timeout: props.timeout || cdk.Duration.minutes(2),
169 role: props.role,
170 logRetention: props.logRetention,
171 functionName: props.functionName,
172 });
173 this.grantPrincipal = provider.grantPrincipal;
174 // Create the policy statements for the custom resource function role, or use the user-provided ones
175 const statements = [];
176 if (props.policy.statements.length !== 0) {
177 // Use custom statements provided by the user
178 for (const statement of props.policy.statements) {
179 statements.push(statement);
180 }
181 }
182 else {
183 // Derive statements from AWS SDK calls
184 for (const call of [props.onCreate, props.onUpdate, props.onDelete]) {
185 if (call && call.assumedRoleArn == null) {
186 const statement = new iam.PolicyStatement({
187 actions: [awsSdkToIamAction(call.service, call.action)],
188 resources: props.policy.resources,
189 });
190 statements.push(statement);
191 }
192 else if (call && call.assumedRoleArn != null) {
193 const statement = new iam.PolicyStatement({
194 actions: ['sts:AssumeRole'],
195 resources: [call.assumedRoleArn],
196 });
197 statements.push(statement);
198 }
199 }
200 }
201 const policy = new iam.Policy(this, 'CustomResourcePolicy', {
202 statements: statements,
203 });
204 if (provider.role !== undefined) {
205 policy.attachToRole(provider.role);
206 }
207 const create = props.onCreate || props.onUpdate;
208 this.customResource = new cdk.CustomResource(this, 'Resource', {
209 resourceType: props.resourceType || 'Custom::AWS',
210 serviceToken: provider.functionArn,
211 pascalCaseProperties: true,
212 properties: {
213 create: create && this.encodeJson(create),
214 update: props.onUpdate && this.encodeJson(props.onUpdate),
215 delete: props.onDelete && this.encodeJson(props.onDelete),
216 installLatestAwsSdk: props.installLatestAwsSdk ?? true,
217 },
218 });
219 // If the policy was deleted first, then the function might lose permissions to delete the custom resource
220 // This is here so that the policy doesn't get removed before onDelete is called
221 this.customResource.node.addDependency(policy);
222 }
223 static breakIgnoreErrorsCircuit(sdkCalls, caller) {
224 for (const call of sdkCalls) {
225 if (call?.ignoreErrorCodesMatching) {
226 throw new Error(`\`${caller}\`` + ' cannot be called along with `ignoreErrorCodesMatching`.');
227 }
228 }
229 }
230 /**
231 * Returns response data for the AWS SDK call.
232 *
233 * Example for S3 / listBucket : 'Buckets.0.Name'
234 *
235 * Use `Token.asXxx` to encode the returned `Reference` as a specific type or
236 * use the convenience `getDataString` for string attributes.
237 *
238 * Note that you cannot use this method if `ignoreErrorCodesMatching`
239 * is configured for any of the SDK calls. This is because in such a case,
240 * the response data might not exist, and will cause a CloudFormation deploy time error.
241 *
242 * @param dataPath the path to the data
243 */
244 getResponseFieldReference(dataPath) {
245 AwsCustomResource.breakIgnoreErrorsCircuit([this.props.onCreate, this.props.onUpdate], 'getData');
246 return this.customResource.getAtt(dataPath);
247 }
248 /**
249 * Returns response data for the AWS SDK call as string.
250 *
251 * Example for S3 / listBucket : 'Buckets.0.Name'
252 *
253 * Note that you cannot use this method if `ignoreErrorCodesMatching`
254 * is configured for any of the SDK calls. This is because in such a case,
255 * the response data might not exist, and will cause a CloudFormation deploy time error.
256 *
257 * @param dataPath the path to the data
258 */
259 getResponseField(dataPath) {
260 AwsCustomResource.breakIgnoreErrorsCircuit([this.props.onCreate, this.props.onUpdate], 'getDataString');
261 return this.customResource.getAttString(dataPath);
262 }
263 encodeJson(obj) {
264 return cdk.Lazy.uncachedString({ produce: () => cdk.Stack.of(this).toJsonString(obj) });
265 }
266}
267exports.AwsCustomResource = AwsCustomResource;
268_d = JSII_RTTI_SYMBOL_1;
269AwsCustomResource[_d] = { fqn: "@aws-cdk/custom-resources.AwsCustomResource", version: "1.191.0" };
270/**
271 * Gets awsSdkMetaData from file or from cache
272 */
273let getAwsSdkMetadata = (() => {
274 let _awsSdkMetadata;
275 return function () {
276 if (_awsSdkMetadata) {
277 return _awsSdkMetadata;
278 }
279 else {
280 return _awsSdkMetadata = JSON.parse(fs.readFileSync(path.join(__dirname, 'sdk-api-metadata.json'), 'utf-8'));
281 }
282 };
283})();
284/**
285 * Returns true if `obj` includes a `PhysicalResourceIdReference` in one of the
286 * values.
287 * @param obj Any object.
288 */
289function includesPhysicalResourceIdRef(obj) {
290 if (obj === undefined) {
291 return false;
292 }
293 let foundRef = false;
294 // we use JSON.stringify as a way to traverse all values in the object.
295 JSON.stringify(obj, (_, v) => {
296 if (v === runtime_1.PHYSICAL_RESOURCE_ID_REFERENCE) {
297 foundRef = true;
298 }
299 return v;
300 });
301 return foundRef;
302}
303/**
304 * Transform SDK service/action to IAM action using metadata from aws-sdk module.
305 * Example: CloudWatchLogs with putRetentionPolicy => logs:PutRetentionPolicy
306 *
307 * TODO: is this mapping correct for all services?
308 */
309function awsSdkToIamAction(service, action) {
310 const srv = service.toLowerCase();
311 const awsSdkMetadata = getAwsSdkMetadata();
312 const iamService = (awsSdkMetadata[srv] && awsSdkMetadata[srv].prefix) || srv;
313 const iamAction = action.charAt(0).toUpperCase() + action.slice(1);
314 return `${iamService}:${iamAction}`;
315}
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* as fs from 'fs';\nimport * as path from 'path';\nimport * as iam from '@aws-cdk/aws-iam';\nimport * as lambda from '@aws-cdk/aws-lambda';\nimport * as logs from '@aws-cdk/aws-logs';\nimport * as cdk from '@aws-cdk/core';\nimport { Construct } from 'constructs';\nimport { PHYSICAL_RESOURCE_ID_REFERENCE } from './runtime';\n\n// keep this import separate from other imports to reduce chance for merge conflicts with v2-main\n// eslint-disable-next-line no-duplicate-imports, import/order\nimport { Construct as CoreConstruct } from '@aws-cdk/core';\n\n/**\n * Reference to the physical resource id that can be passed to the AWS operation as a parameter.\n */\nexport class PhysicalResourceIdReference implements cdk.IResolvable {\n  public readonly creationStack: string[] = cdk.captureStackTrace();\n\n  /**\n   * toJSON serialization to replace `PhysicalResourceIdReference` with a magic string.\n   */\n  public toJSON() {\n    return PHYSICAL_RESOURCE_ID_REFERENCE;\n  }\n\n  public resolve(_: cdk.IResolveContext): any {\n    return PHYSICAL_RESOURCE_ID_REFERENCE;\n  }\n\n  public toString(): string {\n    return PHYSICAL_RESOURCE_ID_REFERENCE;\n  }\n}\n\n/**\n * Physical ID of the custom resource.\n */\nexport class PhysicalResourceId {\n\n  /**\n   * Extract the physical resource id from the path (dot notation) to the data in the API call response.\n   */\n  public static fromResponse(responsePath: string): PhysicalResourceId {\n    return new PhysicalResourceId(responsePath, undefined);\n  }\n\n  /**\n   * Explicit physical resource id.\n   */\n  public static of(id: string): PhysicalResourceId {\n    return new PhysicalResourceId(undefined, id);\n  }\n\n  /**\n   * @param responsePath Path to a response data element to be used as the physical id.\n   * @param id Literal string to be used as the physical id.\n   */\n  private constructor(public readonly responsePath?: string, public readonly id?: string) { }\n}\n\n/**\n * An AWS SDK call.\n */\nexport interface AwsSdkCall {\n  /**\n   * The service to call\n   *\n   * @see https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/index.html\n   */\n  readonly service: string;\n\n  /**\n   * The service action to call\n   *\n   * @see https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/index.html\n   */\n  readonly action: string;\n\n  /**\n   * The parameters for the service action\n   *\n   * @default - no parameters\n   * @see https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/index.html\n   */\n  readonly parameters?: any;\n\n  /**\n   * The physical resource id of the custom resource for this call.\n   * Mandatory for onCreate or onUpdate calls.\n   *\n   * @default - no physical resource id\n   */\n  readonly physicalResourceId?: PhysicalResourceId;\n\n  /**\n   * The regex pattern to use to catch API errors. The `code` property of the\n   * `Error` object will be tested against this pattern. If there is a match an\n   * error will not be thrown.\n   *\n   * @default - do not catch errors\n   */\n  readonly ignoreErrorCodesMatching?: string;\n\n  /**\n   * API version to use for the service\n   *\n   * @see https://docs.aws.amazon.com/sdk-for-javascript/v2/developer-guide/locking-api-versions.html\n   * @default - use latest available API version\n   */\n  readonly apiVersion?: string;\n\n  /**\n   * The region to send service requests to.\n   * **Note: Cross-region operations are generally considered an anti-pattern.**\n   * **Consider first deploying a stack in that region.**\n   *\n   * @default - the region where this custom resource is deployed\n   */\n  readonly region?: string;\n\n  /**\n   * Restrict the data returned by the custom resource to a specific path in\n   * the API response. Use this to limit the data returned by the custom\n   * resource if working with API calls that could potentially result in custom\n   * response objects exceeding the hard limit of 4096 bytes.\n   *\n   * Example for ECS / updateService: 'service.deploymentConfiguration.maximumPercent'\n   *\n   * @default - return all data\n   *\n   * @deprecated use outputPaths instead\n   */\n  readonly outputPath?: string;\n\n  /**\n   * Restrict the data returned by the custom resource to specific paths in\n   * the API response. Use this to limit the data returned by the custom\n   * resource if working with API calls that could potentially result in custom\n   * response objects exceeding the hard limit of 4096 bytes.\n   *\n   * Example for ECS / updateService: ['service.deploymentConfiguration.maximumPercent']\n   *\n   * @default - return all data\n   */\n  readonly outputPaths?: string[];\n\n  /**\n   * Used for running the SDK calls in underlying lambda with a different role\n   * Can be used primarily for cross-account requests to for example connect\n   * hostedzone with a shared vpc\n   *\n   * Example for Route53 / associateVPCWithHostedZone\n   *\n   * @default - run without assuming role\n   */\n  readonly assumedRoleArn?: string;\n}\n\n/**\n * Options for the auto-generation of policies based on the configured SDK calls.\n */\nexport interface SdkCallsPolicyOptions {\n\n  /**\n   * The resources that the calls will have access to.\n   *\n   * It is best to use specific resource ARN's when possible. However, you can also use `AwsCustomResourcePolicy.ANY_RESOURCE`\n   * to allow access to all resources. For example, when `onCreate` is used to create a resource which you don't\n   * know the physical name of in advance.\n   *\n   * Note that will apply to ALL SDK calls.\n   */\n  readonly resources: string[]\n\n}\n\n/**\n * The IAM Policy that will be applied to the different calls.\n */\nexport class AwsCustomResourcePolicy {\n\n  /**\n   * Use this constant to configure access to any resource.\n   */\n  public static readonly ANY_RESOURCE = ['*'];\n\n  /**\n   * Explicit IAM Policy Statements.\n   *\n   * @param statements the statements to propagate to the SDK calls.\n   */\n  public static fromStatements(statements: iam.PolicyStatement[]) {\n    return new AwsCustomResourcePolicy(statements, undefined);\n  }\n\n  /**\n   * Generate IAM Policy Statements from the configured SDK calls.\n   *\n   * Each SDK call with be translated to an IAM Policy Statement in the form of: `call.service:call.action` (e.g `s3:PutObject`).\n   *\n   * This policy generator assumes the IAM policy name has the same name as the API\n   * call. This is true in 99% of cases, but there are exceptions (for example,\n   * S3's `PutBucketLifecycleConfiguration` requires\n   * `s3:PutLifecycleConfiguration` permissions, Lambda's `Invoke` requires\n   * `lambda:InvokeFunction` permissions). Use `fromStatements` if you want to\n   * do a call that requires different IAM action names.\n   *\n   * @param options options for the policy generation\n   */\n  public static fromSdkCalls(options: SdkCallsPolicyOptions) {\n    return new AwsCustomResourcePolicy([], options.resources);\n  }\n\n  /**\n   * @param statements statements for explicit policy.\n   * @param resources resources for auto-generated from SDK calls.\n   */\n  private constructor(public readonly statements: iam.PolicyStatement[], public readonly resources?: string[]) {}\n}\n\n/**\n * Properties for AwsCustomResource.\n *\n * Note that at least onCreate, onUpdate or onDelete must be specified.\n */\nexport interface AwsCustomResourceProps {\n  /**\n   * Cloudformation Resource type.\n   *\n   * @default - Custom::AWS\n   */\n  readonly resourceType?: string;\n\n  /**\n   * The AWS SDK call to make when the resource is created.\n   *\n   * @default - the call when the resource is updated\n   */\n  readonly onCreate?: AwsSdkCall;\n\n  /**\n   * The AWS SDK call to make when the resource is updated\n   *\n   * @default - no call\n   */\n  readonly onUpdate?: AwsSdkCall;\n\n  /**\n   * The AWS SDK call to make when the resource is deleted\n   *\n   * @default - no call\n   */\n  readonly onDelete?: AwsSdkCall;\n\n  /**\n   * The policy that will be added to the execution role of the Lambda\n   * function implementing this custom resource provider.\n   *\n   * The custom resource also implements `iam.IGrantable`, making it possible\n   * to use the `grantXxx()` methods.\n   *\n   * As this custom resource uses a singleton Lambda function, it's important\n   * to note the that function's role will eventually accumulate the\n   * permissions/grants from all resources.\n   *\n   * @see Policy.fromStatements\n   * @see Policy.fromSdkCalls\n   */\n  readonly policy: AwsCustomResourcePolicy;\n\n  /**\n   * The execution role for the singleton Lambda function implementing this custom\n   * resource provider. This role will apply to all `AwsCustomResource`\n   * instances in the stack. The role must be assumable by the\n   * `lambda.amazonaws.com` service principal.\n   *\n   * @default - a new role is created\n   */\n  readonly role?: iam.IRole;\n\n  /**\n   * The timeout for the singleton Lambda function implementing this custom resource.\n   *\n   * @default Duration.minutes(2)\n   */\n  readonly timeout?: cdk.Duration\n\n  /**\n   * The number of days log events of the singleton Lambda function implementing\n   * this custom resource are kept in CloudWatch Logs.\n   *\n   * @default logs.RetentionDays.INFINITE\n   */\n  readonly logRetention?: logs.RetentionDays;\n\n  /**\n   * Whether to install the latest AWS SDK v2. Allows to use the latest API\n   * calls documented at https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/index.html.\n   *\n   * The installation takes around 60 seconds.\n   *\n   * @default true\n   */\n  readonly installLatestAwsSdk?: boolean;\n\n  /**\n   * A name for the singleton Lambda function implementing this custom resource.\n   * The function name will remain the same after the first AwsCustomResource is created in a stack.\n   *\n   * @default - AWS CloudFormation generates a unique physical ID and uses that\n   * ID for the function's name. For more information, see Name Type.\n   */\n  readonly functionName?: string;\n}\n\n/**\n * Defines a custom resource that is materialized using specific AWS API calls. These calls are created using\n * a singleton Lambda function.\n *\n * Use this to bridge any gap that might exist in the CloudFormation Coverage.\n * You can specify exactly which calls are invoked for the 'CREATE', 'UPDATE' and 'DELETE' life cycle events.\n *\n */\nexport class AwsCustomResource extends CoreConstruct implements iam.IGrantable {\n\n  private static breakIgnoreErrorsCircuit(sdkCalls: Array<AwsSdkCall | undefined>, caller: string) {\n\n    for (const call of sdkCalls) {\n      if (call?.ignoreErrorCodesMatching) {\n        throw new Error(`\\`${caller}\\`` + ' cannot be called along with `ignoreErrorCodesMatching`.');\n      }\n    }\n\n  }\n\n  public readonly grantPrincipal: iam.IPrincipal;\n\n  private readonly customResource: cdk.CustomResource;\n  private readonly props: AwsCustomResourceProps;\n\n  // 'props' cannot be optional, even though all its properties are optional.\n  // this is because at least one sdk call must be provided.\n  constructor(scope: Construct, id: string, props: AwsCustomResourceProps) {\n    super(scope, id);\n\n    if (!props.onCreate && !props.onUpdate && !props.onDelete) {\n      throw new Error('At least `onCreate`, `onUpdate` or `onDelete` must be specified.');\n    }\n\n    for (const call of [props.onCreate, props.onUpdate]) {\n      if (call && !call.physicalResourceId) {\n        throw new Error('`physicalResourceId` must be specified for onCreate and onUpdate calls.');\n      }\n    }\n\n    for (const call of [props.onCreate, props.onUpdate, props.onDelete]) {\n      if (call?.physicalResourceId?.responsePath) {\n        AwsCustomResource.breakIgnoreErrorsCircuit([call], 'PhysicalResourceId.fromResponse');\n      }\n    }\n\n    if (includesPhysicalResourceIdRef(props.onCreate?.parameters)) {\n      throw new Error('`PhysicalResourceIdReference` must not be specified in `onCreate` parameters.');\n    }\n\n    this.props = props;\n\n    const provider = new lambda.SingletonFunction(this, 'Provider', {\n      code: lambda.Code.fromAsset(path.join(__dirname, 'runtime'), {\n        exclude: ['*.ts'],\n      }),\n      runtime: lambda.Runtime.NODEJS_14_X,\n      handler: 'index.handler',\n      uuid: '679f53fa-c002-430c-b0da-5b7982bd2287',\n      lambdaPurpose: 'AWS',\n      timeout: props.timeout || cdk.Duration.minutes(2),\n      role: props.role,\n      logRetention: props.logRetention,\n      functionName: props.functionName,\n    });\n    this.grantPrincipal = provider.grantPrincipal;\n\n    // Create the policy statements for the custom resource function role, or use the user-provided ones\n    const statements = [];\n    if (props.policy.statements.length !== 0) {\n      // Use custom statements provided by the user\n      for (const statement of props.policy.statements) {\n        statements.push(statement);\n      }\n    } else {\n      // Derive statements from AWS SDK calls\n      for (const call of [props.onCreate, props.onUpdate, props.onDelete]) {\n        if (call && call.assumedRoleArn == null) {\n          const statement = new iam.PolicyStatement({\n            actions: [awsSdkToIamAction(call.service, call.action)],\n            resources: props.policy.resources,\n          });\n          statements.push(statement);\n        } else if (call && call.assumedRoleArn != null) {\n          const statement = new iam.PolicyStatement({\n            actions: ['sts:AssumeRole'],\n            resources: [call.assumedRoleArn],\n          });\n          statements.push(statement);\n        }\n      }\n    }\n    const policy = new iam.Policy(this, 'CustomResourcePolicy', {\n      statements: statements,\n    });\n    if (provider.role !== undefined) {\n      policy.attachToRole(provider.role);\n    }\n    const create = props.onCreate || props.onUpdate;\n    this.customResource = new cdk.CustomResource(this, 'Resource', {\n      resourceType: props.resourceType || 'Custom::AWS',\n      serviceToken: provider.functionArn,\n      pascalCaseProperties: true,\n      properties: {\n        create: create && this.encodeJson(create),\n        update: props.onUpdate && this.encodeJson(props.onUpdate),\n        delete: props.onDelete && this.encodeJson(props.onDelete),\n        installLatestAwsSdk: props.installLatestAwsSdk ?? true,\n      },\n    });\n\n    // If the policy was deleted first, then the function might lose permissions to delete the custom resource\n    // This is here so that the policy doesn't get removed before onDelete is called\n    this.customResource.node.addDependency(policy);\n  }\n\n  /**\n   * Returns response data for the AWS SDK call.\n   *\n   * Example for S3 / listBucket : 'Buckets.0.Name'\n   *\n   * Use `Token.asXxx` to encode the returned `Reference` as a specific type or\n   * use the convenience `getDataString` for string attributes.\n   *\n   * Note that you cannot use this method if `ignoreErrorCodesMatching`\n   * is configured for any of the SDK calls. This is because in such a case,\n   * the response data might not exist, and will cause a CloudFormation deploy time error.\n   *\n   * @param dataPath the path to the data\n   */\n  public getResponseFieldReference(dataPath: string) {\n    AwsCustomResource.breakIgnoreErrorsCircuit([this.props.onCreate, this.props.onUpdate], 'getData');\n    return this.customResource.getAtt(dataPath);\n  }\n\n  /**\n   * Returns response data for the AWS SDK call as string.\n   *\n   * Example for S3 / listBucket : 'Buckets.0.Name'\n   *\n   * Note that you cannot use this method if `ignoreErrorCodesMatching`\n   * is configured for any of the SDK calls. This is because in such a case,\n   * the response data might not exist, and will cause a CloudFormation deploy time error.\n   *\n   * @param dataPath the path to the data\n   */\n  public getResponseField(dataPath: string): string {\n    AwsCustomResource.breakIgnoreErrorsCircuit([this.props.onCreate, this.props.onUpdate], 'getDataString');\n    return this.customResource.getAttString(dataPath);\n  }\n\n  private encodeJson(obj: any) {\n    return cdk.Lazy.uncachedString({ produce: () => cdk.Stack.of(this).toJsonString(obj) });\n  }\n}\n\n/**\n * AWS SDK service metadata.\n */\nexport type AwsSdkMetadata = {[key: string]: any};\n\n/**\n * Gets awsSdkMetaData from file or from cache\n */\nlet getAwsSdkMetadata = (() => {\n  let _awsSdkMetadata: AwsSdkMetadata;\n  return function () {\n    if (_awsSdkMetadata) {\n      return _awsSdkMetadata;\n    } else {\n      return _awsSdkMetadata = JSON.parse(fs.readFileSync(path.join(__dirname, 'sdk-api-metadata.json'), 'utf-8'));\n    }\n  };\n})();\n\n/**\n * Returns true if `obj` includes a `PhysicalResourceIdReference` in one of the\n * values.\n * @param obj Any object.\n */\nfunction includesPhysicalResourceIdRef(obj: any | undefined) {\n  if (obj === undefined) {\n    return false;\n  }\n\n  let foundRef = false;\n\n  // we use JSON.stringify as a way to traverse all values in the object.\n  JSON.stringify(obj, (_, v) => {\n    if (v === PHYSICAL_RESOURCE_ID_REFERENCE) {\n      foundRef = true;\n    }\n\n    return v;\n  });\n\n  return foundRef;\n}\n\n/**\n * Transform SDK service/action to IAM action using metadata from aws-sdk module.\n * Example: CloudWatchLogs with putRetentionPolicy => logs:PutRetentionPolicy\n *\n * TODO: is this mapping correct for all services?\n */\nfunction awsSdkToIamAction(service: string, action: string): string {\n  const srv = service.toLowerCase();\n  const awsSdkMetadata = getAwsSdkMetadata();\n  const iamService = (awsSdkMetadata[srv] && awsSdkMetadata[srv].prefix) || srv;\n  const iamAction = action.charAt(0).toUpperCase() + action.slice(1);\n  return `${iamService}:${iamAction}`;\n}\n"]}
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