AWS CDKがデプロイするリソース名はどうやって決まるのか

const bucket = new s3.Bucket(this, "MyBucket", {
  bucketName: "hoge-fuga-piyo-123456789012"
});

const bucket = new s3.CfnBucket(this, "MyBucket", {});
const tp = new sns.CfnTopic(this,"MyTopic",{});

{
 "Resources": {
  "MyBucket": {
   "Type": "AWS::S3::Bucket",
   ... 
  },
  "MyTopic": {
   "Type": "AWS::SNS::Topic",
   ...
  },

const bucket2 = new s3.Bucket(this, "MyBucket", {});
const tp2 = new sns.Topic(this,`MyTopic`,{})

{
 "Resources": {
  "MyBucketF68F3FF0": {
   "Type": "AWS::S3::Bucket",
   ...
  },
  "MyTopic86869434": {
   "Type": "AWS::SNS::Topic",
   ...
  },

const hash = pathHash(components);
const human = removeDupes(components)
  .filter(x => x !== HIDDEN_FROM_HUMAN_ID)
  .map(removeNonAlphanumeric)
  .join('')
  .slice(0, MAX_HUMAN_LEN);

return human + hash;

import * as cdk from 'aws-cdk-lib';
import { Construct } from 'constructs';
import { aws_s3 as s3 } from 'aws-cdk-lib';

import * as crypto from 'crypto';

/**
 * 人が読める部分には表示されないが、ハッシュ値の計算に利用される
 * Ref: https://github.com/aws/aws-cdk/blob/7966f8d48c4bff26beb22856d289f9d0c7e7081d/packages/%40aws-cdk/core/lib/private/uniqueid.ts#L10
 */ 
const HIDDEN_FROM_HUMAN_ID = 'Resource';

const HASH_LEN = 8;
const MAX_HUMAN_LEN = 240; // max ID len is 255
const PATH_SEP = '/';

export class ConstructIdSampleStack extends cdk.Stack {
  constructor(scope: Construct, id: string, props?: cdk.StackProps) {
    super(scope, id, props);

  const bucket2 = new s3.Bucket(this, "MyBucket", {});

  const components = [bucket2.node.id, HIDDEN_FROM_HUMAN_ID]; // 実体: "MyBucket","Resource"

    const hash = pathHash(components);
    const human = removeDupes(components)
      .filter(x => x !== HIDDEN_FROM_HUMAN_ID)
      .map(removeNonAlphanumeric)
      .join('')
      .slice(0, MAX_HUMAN_LEN);
    new cdk.CfnOutput(this, 'ResourceName', {
      value: human + hash,
    });
  }
}

function pathHash(path: string[]): string {
  const md5 = crypto.createHash('md5').update(path.join(PATH_SEP)).digest('hex');
  return md5.slice(0, HASH_LEN).toUpperCase();
}

function removeDupes(path: string[]): string[] {
  const ret = new Array<string>();
  for (const component of path) {
    if (ret.length === 0 || !ret[ret.length - 1].endsWith(component)) {
      ret.push(component);
    }
  }
  return ret;
}

function removeNonAlphanumeric(s: string) {
  return s.replace(/[^A-Za-z0-9]/g, '');
}

{
 "Resources": {
  "MyBucketF68F3FF0": {
   "Type": "AWS::S3::Bucket",
   ...
...
   "Outputs": {
    "ResourceName": {
    "Value": "MyBucketF68F3FF0"
    }
  },
...

export class SampleConstruct extends Construct {
    constructor(scope: Construct, id: string, props?: cdk.StackProps) {
      super(scope, id);
      const bucket = new s3.Bucket(this, "MyBucketX", {});
      const cfnBucket = new s3.CfnBucket(this, "MyCfnBucketX", {});

      const components = [this.node.id, cfnBucket.node.id];
      // (中略)先ほどと同じCDKのロジック
      new cdk.CfnOutput(this, 'ConstructResourceName', {
        value: human + hash,
      });
    }
}

  "SampleConstructMyBucketX5AF69B3F": {
   "Type": "AWS::S3::Bucket",
   ...
  },
  "SampleConstructMyCfnBucketX47A6EB3F": {
   "Type": "AWS::S3::Bucket",
   ...
  },
  "Outputs": {
    "SampleConstructConstructResourceName41418625": {
      "Value": "SampleConstructMyCfnBucketX47A6EB3F"
    },
...

const bucket2 = new s3.Bucket(this, "MyBucket", {});
const tp2 = new sns.Topic(this,"MyTopic",{});
const webAcl = new wafv2.CfnWebACL(this, `WebAcl`, {
  defaultAction: { allow: {} },
  scope: 'REGIONAL',
  visibilityConfig: {
    cloudWatchMetricsEnabled: true,
    metricName: 'WebAcl',
    sampledRequestsEnabled: true,
  },
  rules: []
});

new cdk.CfnOutput(this, 'S3BucketArn', {
  value: bucket2.bucketArn,
  description: "S3BucketArn"
});
new cdk.CfnOutput(this, 'SnsArn', {
  value: tp2.topicArn,
});
new cdk.CfnOutput(this, 'WebAclArn', {
  value: webAcl.attrArn,
});

{
 "Resources": {
  "MyBucketF68F3FF0": {
   "Type": "AWS::S3::Bucket",
   ...
  },
  "MyTopic86869434": {
   "Type": "AWS::SNS::Topic",
   ...
  },
  "WebAcl": {
   "Type": "AWS::WAFv2::WebACL",
...

ConstructIdSampleStack.S3BucketArn = arn:aws:s3:::constructidsamplestack-mybucketf68f3ff0-n8jdmj3ocqz8
ConstructIdSampleStack.SnsArn = arn:aws:sns:ap-northeast-1:123456789012:ConstructIdSampleStack-MyTopic86869434-AO780DANYO90
ConstructIdSampleStack.WebAclArn = arn:aws:wafv2:ap-northeast-1:123456789012:regional/webacl/WebAcl-bLhJjT3HpSQS/12345678-AAAA-XXXX-YYYY-ZZZZZZZZZZZZ