(cli): `cdk diff --template` >=2.133.0 crashes #29890

toha-nordic · 2024-04-18T14:08:28Z

Describe the bug

When using --template with cdk diff it crashes with CDK >=2.133.0 (tested up to 2.137.0):

cdk diff --exclusively --color -vvv --template tmp/backend-cd.template.json -a cdk.out --no-change-set backend-cd
...
Cannot convert undefined or null to object
[16:46:59] TypeError: Cannot convert undefined or null to object
    at Function.keys (<anonymous>)
    at calculateTemplateDiff (/home/toha/.nvm/versions/node/v18.19.1/lib/node_modules/aws-cdk/lib/index.js:394:52274)
    at diffTemplate (/home/toha/.nvm/versions/node/v18.19.1/lib/node_modules/aws-cdk/lib/index.js:394:50944)
    at Object.fullDiff (/home/toha/.nvm/versions/node/v18.19.1/lib/node_modules/aws-cdk/lib/index.js:394:50728)
    at printStackDiff (/home/toha/.nvm/versions/node/v18.19.1/lib/node_modules/aws-cdk/lib/index.js:433:166276)
    at CdkToolkit.diff (/home/toha/.nvm/versions/node/v18.19.1/lib/node_modules/aws-cdk/lib/index.js:433:193682)
    at async exec4 (/home/toha/.nvm/versions/node/v18.19.1/lib/node_modules/aws-cdk/lib/index.js:488:54378)

Expected Behavior

With CDK 2.132.0 it still works as before:

cdk diff --exclusively --color -vvv --template tmp/backend-cd.template.json -a cdk.out --no-change-set backend-cd
...
Resources
[~] AWS::Logs::LogGroup CodeBuildResultsLogGroup CodeBuildResultsLogGroup535329BA replace
 └─ [~] LogGroupName (requires replacement)
     ├─ [-] /aws/codebuild/202403261110
     └─ [+] /aws/codebuild/202404181350

✨  Number of stacks with differences: 1

Current Behavior

cdk diff --exclusively --color -vvv --template tmp/backend-cd.template.json -a cdk.out --no-change-set backend-cd
[17:00:30] CDK toolkit version: 2.133.0 (build dcc1e75)
[17:00:30] Command line arguments: {
  _: [ 'diff' ],
  exclusively: true,
  e: true,
  color: true,
  v: 3,
  verbose: 3,
  template: 'tmp/backend-cd.template.json',
  a: 'cdk.out',
  app: 'cdk.out',
  'change-set': false,
  changeSet: false,
  lookups: true,
  'ignore-errors': false,
  ignoreErrors: false,
  json: false,
  j: false,
  debug: false,
  ec2creds: undefined,
  i: undefined,
  'version-reporting': undefined,
  versionReporting: undefined,
  'path-metadata': undefined,
  pathMetadata: undefined,
  'asset-metadata': undefined,
  assetMetadata: undefined,
  'role-arn': undefined,
  r: undefined,
  roleArn: undefined,
  staging: true,
  'no-color': false,
  noColor: false,
  ci: false,
  'context-lines': 3,
  contextLines: 3,
  strict: false,
  'security-only': false,
  securityOnly: false,
  processed: false,
  quiet: false,
  q: false,
  '$0': 'cdk',
  STACKS: [ 'backend-cd' ],
  'S-t-a-c-k-s': [ 'backend-cd' ]
}
[17:00:30] cdk.json: {
  "app": "node --unhandled-rejections=strict dist/aws/deployment-app.js",
  "build": "yarn compile",
  "progress": "events"
}
[17:00:30] cdk.context.json: {
  "availability-zones:account=<account_number>:region=us-east-1": [
    "us-east-1a",
    "us-east-1b",
    "us-east-1c",
    "us-east-1d",
    "us-east-1e",
    "us-east-1f"
  ],
  "vpc-provider:account=<account_number>:filter.vpc-id=vpc-00fe623bb1cb307af:region=us-east-1:returnAsymmetricSubnets=true": {
    "vpcId": "vpc-00fe623bb1cb307af",
    "vpcCidrBlock": "10.0.0.0/16",
    "availabilityZones": [],
    "subnetGroups": [
      {
        "name": "Public",
        "type": "Public",
        "subnets": [
          {
            "subnetId": "subnet-0dcd6214a092e97bb",
            "cidr": "10.0.0.0/19",
            "availabilityZone": "us-east-1a",
            "routeTableId": "rtb-049bcd6081554adba"
          },
          {
            "subnetId": "subnet-0439f6c9f8173550d",
            "cidr": "10.0.32.0/19",
            "availabilityZone": "us-east-1b",
            "routeTableId": "rtb-001a243184f9a0bf6"
          },
          {
            "subnetId": "subnet-0c08d9ed938abd694",
            "cidr": "10.0.64.0/19",
            "availabilityZone": "us-east-1c",
            "routeTableId": "rtb-0ecad04cad49bd826"
          }
        ]
      },
      {
        "name": "Private",
        "type": "Private",
        "subnets": [
          {
            "subnetId": "subnet-0085d228d3e18249e",
            "cidr": "10.0.96.0/19",
            "availabilityZone": "us-east-1a",
            "routeTableId": "rtb-0e68dc83a7eaee52b"
          },
          {
            "subnetId": "subnet-0c1f57177b5f27e76",
            "cidr": "10.0.128.0/19",
            "availabilityZone": "us-east-1b",
            "routeTableId": "rtb-08af3c4138d1a26ca"
          },
          {
            "subnetId": "subnet-07492c442575dbd2c",
            "cidr": "10.0.160.0/19",
            "availabilityZone": "us-east-1c",
            "routeTableId": "rtb-0743875d0f322eab2"
          }
        ]
      }
    ]
  },
  "vpc-provider:account=<account_number>:filter.vpc-id=vpc-05c9125968a03fe97:region=us-east-1:returnAsymmetricSubnets=true": {
    "vpcId": "vpc-05c9125968a03fe97",
    "vpcCidrBlock": "10.0.0.0/16",
    "availabilityZones": [],
    "subnetGroups": [
      {
        "name": "Public",
        "type": "Public",
        "subnets": [
          {
            "subnetId": "subnet-0ae7ba04619dfc7af",
            "cidr": "10.0.0.0/19",
            "availabilityZone": "us-east-1a",
            "routeTableId": "rtb-04b0440e27503b7c2"
          },
          {
            "subnetId": "subnet-070b8abc78ee45cc4",
            "cidr": "10.0.32.0/19",
            "availabilityZone": "us-east-1b",
            "routeTableId": "rtb-03f934535932dccf3"
          },
          {
            "subnetId": "subnet-0dabcba1c8fee9aee",
            "cidr": "10.0.64.0/19",
            "availabilityZone": "us-east-1c",
            "routeTableId": "rtb-0f6f68b9a7bbd1df1"
          }
        ]
      },
      {
        "name": "Private",
        "type": "Private",
        "subnets": [
          {
            "subnetId": "subnet-0b12f11b33aa588f0",
            "cidr": "10.0.96.0/19",
            "availabilityZone": "us-east-1a",
            "routeTableId": "rtb-0c8fd18577d1db091"
          },
          {
            "subnetId": "subnet-0c26ce5ac93015603",
            "cidr": "10.0.128.0/19",
            "availabilityZone": "us-east-1b",
            "routeTableId": "rtb-033f5989cd6fec4db"
          },
          {
            "subnetId": "subnet-04f624dc04d0b23ba",
            "cidr": "10.0.160.0/19",
            "availabilityZone": "us-east-1c",
            "routeTableId": "rtb-020d6b2c9c6ce540d"
          }
        ]
      }
    ]
  },
  "ami:account=<account_number>:filters.image-type.0=machine:filters.name.0=amzn-ami-vpc-nat-*:filters.state.0=available:owners.0=amazon:region=us-east-1": "ami-04027ecc3f40c1801"
}
[17:00:30] merged settings: {
  versionReporting: true,
  assetMetadata: true,
  pathMetadata: true,
  output: 'cdk.out',
  app: 'cdk.out',
  build: 'yarn compile',
  progress: 'events',
  context: {},
  debug: false,
  toolkitBucket: {},
  staging: true,
  bundlingStacks: [ 'backend-cd' ],
  lookups: true
}
[17:00:30] [trace] SdkProvider#withAwsCliCompatibleDefaults()
[17:00:30] Determining if we're on an EC2 instance.
[17:00:30] Does not look like an EC2 instance.
[17:00:30] Toolkit stack: CDKToolkit
[17:00:30] Setting "CDK_DEFAULT_REGION" environment variable to us-east-1
[17:00:30] [trace] SdkProvider#defaultAccount()
[17:00:30] [trace]   SdkProvider#defaultCredentials()
[17:00:30] Resolving default credentials
[17:00:30] [trace]   SDK#currentAccount()
[17:00:30] [trace]     SDK#forceCredentialRetrieval()
[17:00:30] Reading cached notices from /home/toha/.cdk/cache/notices.json
[17:00:30] Retrieved account ID <account_number> from disk cache
[17:00:30] Setting "CDK_DEFAULT_ACCOUNT" environment variable to <account_number>
[17:00:30] context: {
  'availability-zones:account=<account_number>:region=us-east-1': [
    'us-east-1a',
    'us-east-1b',
    'us-east-1c',
    'us-east-1d',
    'us-east-1e',
    'us-east-1f'
  ],
  'vpc-provider:account=<account_number>:filter.vpc-id=vpc-00fe623bb1cb307af:region=us-east-1:returnAsymmetricSubnets=true': {
    vpcId: 'vpc-00fe623bb1cb307af',
    vpcCidrBlock: '10.0.0.0/16',
    availabilityZones: [],
    subnetGroups: [ [Object], [Object] ]
  },
  'vpc-provider:account=<account_number>:filter.vpc-id=vpc-05c9125968a03fe97:region=us-east-1:returnAsymmetricSubnets=true': {
    vpcId: 'vpc-05c9125968a03fe97',
    vpcCidrBlock: '10.0.0.0/16',
    availabilityZones: [],
    subnetGroups: [ [Object], [Object] ]
  },
  'ami:account=<account_number>:filters.image-type.0=machine:filters.name.0=amzn-ami-vpc-nat-*:filters.state.0=available:owners.0=amazon:region=us-east-1': 'ami-04027ecc3f40c1801',
  'aws:cdk:enable-path-metadata': true,
  'aws:cdk:enable-asset-metadata': true,
  'aws:cdk:version-reporting': true,
  'aws:cdk:bundling-stacks': [ 'backend-cd' ]
}
yarn run v1.22.22
$ tsc -b
Done in 0.50s.
[17:00:31] --app points to a cloud assembly, so we bypass synth
[17:00:31] Reading cached notices from /home/toha/.cdk/cache/notices.json

Cannot convert undefined or null to object
[17:00:31] TypeError: Cannot convert undefined or null to object
    at Function.keys (<anonymous>)
    at calculateTemplateDiff (/home/toha/.nvm/versions/node/v18.19.1/lib/node_modules/aws-cdk/lib/index.js:394:52274)
    at diffTemplate (/home/toha/.nvm/versions/node/v18.19.1/lib/node_modules/aws-cdk/lib/index.js:394:50944)
    at Object.fullDiff (/home/toha/.nvm/versions/node/v18.19.1/lib/node_modules/aws-cdk/lib/index.js:394:50728)
    at printStackDiff (/home/toha/.nvm/versions/node/v18.19.1/lib/node_modules/aws-cdk/lib/index.js:433:166276)
    at CdkToolkit.diff (/home/toha/.nvm/versions/node/v18.19.1/lib/node_modules/aws-cdk/lib/index.js:433:193682)
    at async exec4 (/home/toha/.nvm/versions/node/v18.19.1/lib/node_modules/aws-cdk/lib/index.js:488:54378)

Notice if --template flag is removed, it works fine:

cdk diff --exclusively --color -vvv -a cdk.out --no-change-set backend-cd
[17:16:06] CDK toolkit version: 2.133.0 (build dcc1e75)
[17:16:06] Command line arguments: {
  _: [ 'diff' ],
  exclusively: true,
  e: true,
  color: true,
  v: 3,
  verbose: 3,
  a: 'cdk.out',
  app: 'cdk.out',
  'change-set': false,
  changeSet: false,
  lookups: true,
  'ignore-errors': false,
  ignoreErrors: false,
  json: false,
  j: false,
  debug: false,
  ec2creds: undefined,
  i: undefined,
  'version-reporting': undefined,
  versionReporting: undefined,
  'path-metadata': undefined,
  pathMetadata: undefined,
  'asset-metadata': undefined,
  assetMetadata: undefined,
  'role-arn': undefined,
  r: undefined,
  roleArn: undefined,
  staging: true,
  'no-color': false,
  noColor: false,
  ci: false,
  'context-lines': 3,
  contextLines: 3,
  strict: false,
  'security-only': false,
  securityOnly: false,
  processed: false,
  quiet: false,
  q: false,
  '$0': 'cdk',
  STACKS: [ 'backend-cd' ],
  'S-t-a-c-k-s': [ 'backend-cd' ]
}
[17:16:06] cdk.json: {
  "app": "node --unhandled-rejections=strict dist/aws/deployment-app.js",
  "build": "yarn compile",
  "progress": "events"
}
[17:16:06] cdk.context.json: {
  "availability-zones:account=<account_number>:region=us-east-1": [
    "us-east-1a",
    "us-east-1b",
    "us-east-1c",
    "us-east-1d",
    "us-east-1e",
    "us-east-1f"
  ],
  "vpc-provider:account=<account_number>:filter.vpc-id=vpc-00fe623bb1cb307af:region=us-east-1:returnAsymmetricSubnets=true": {
    "vpcId": "vpc-00fe623bb1cb307af",
    "vpcCidrBlock": "10.0.0.0/16",
    "availabilityZones": [],
    "subnetGroups": [
      {
        "name": "Public",
        "type": "Public",
        "subnets": [
          {
            "subnetId": "subnet-0dcd6214a092e97bb",
            "cidr": "10.0.0.0/19",
            "availabilityZone": "us-east-1a",
            "routeTableId": "rtb-049bcd6081554adba"
          },
          {
            "subnetId": "subnet-0439f6c9f8173550d",
            "cidr": "10.0.32.0/19",
            "availabilityZone": "us-east-1b",
            "routeTableId": "rtb-001a243184f9a0bf6"
          },
          {
            "subnetId": "subnet-0c08d9ed938abd694",
            "cidr": "10.0.64.0/19",
            "availabilityZone": "us-east-1c",
            "routeTableId": "rtb-0ecad04cad49bd826"
          }
        ]
      },
      {
        "name": "Private",
        "type": "Private",
        "subnets": [
          {
            "subnetId": "subnet-0085d228d3e18249e",
            "cidr": "10.0.96.0/19",
            "availabilityZone": "us-east-1a",
            "routeTableId": "rtb-0e68dc83a7eaee52b"
          },
          {
            "subnetId": "subnet-0c1f57177b5f27e76",
            "cidr": "10.0.128.0/19",
            "availabilityZone": "us-east-1b",
            "routeTableId": "rtb-08af3c4138d1a26ca"
          },
          {
            "subnetId": "subnet-07492c442575dbd2c",
            "cidr": "10.0.160.0/19",
            "availabilityZone": "us-east-1c",
            "routeTableId": "rtb-0743875d0f322eab2"
          }
        ]
      }
    ]
  },
  "vpc-provider:account=<account_number>:filter.vpc-id=vpc-05c9125968a03fe97:region=us-east-1:returnAsymmetricSubnets=true": {
    "vpcId": "vpc-05c9125968a03fe97",
    "vpcCidrBlock": "10.0.0.0/16",
    "availabilityZones": [],
    "subnetGroups": [
      {
        "name": "Public",
        "type": "Public",
        "subnets": [
          {
            "subnetId": "subnet-0ae7ba04619dfc7af",
            "cidr": "10.0.0.0/19",
            "availabilityZone": "us-east-1a",
            "routeTableId": "rtb-04b0440e27503b7c2"
          },
          {
            "subnetId": "subnet-070b8abc78ee45cc4",
            "cidr": "10.0.32.0/19",
            "availabilityZone": "us-east-1b",
            "routeTableId": "rtb-03f934535932dccf3"
          },
          {
            "subnetId": "subnet-0dabcba1c8fee9aee",
            "cidr": "10.0.64.0/19",
            "availabilityZone": "us-east-1c",
            "routeTableId": "rtb-0f6f68b9a7bbd1df1"
          }
        ]
      },
      {
        "name": "Private",
        "type": "Private",
        "subnets": [
          {
            "subnetId": "subnet-0b12f11b33aa588f0",
            "cidr": "10.0.96.0/19",
            "availabilityZone": "us-east-1a",
            "routeTableId": "rtb-0c8fd18577d1db091"
          },
          {
            "subnetId": "subnet-0c26ce5ac93015603",
            "cidr": "10.0.128.0/19",
            "availabilityZone": "us-east-1b",
            "routeTableId": "rtb-033f5989cd6fec4db"
          },
          {
            "subnetId": "subnet-04f624dc04d0b23ba",
            "cidr": "10.0.160.0/19",
            "availabilityZone": "us-east-1c",
            "routeTableId": "rtb-020d6b2c9c6ce540d"
          }
        ]
      }
    ]
  },
  "ami:account=<account_number>:filters.image-type.0=machine:filters.name.0=amzn-ami-vpc-nat-*:filters.state.0=available:owners.0=amazon:region=us-east-1": "ami-04027ecc3f40c1801"
}
[17:16:06] merged settings: {
  versionReporting: true,
  assetMetadata: true,
  pathMetadata: true,
  output: 'cdk.out',
  app: 'cdk.out',
  build: 'yarn compile',
  progress: 'events',
  context: {},
  debug: false,
  toolkitBucket: {},
  staging: true,
  bundlingStacks: [ 'backend-cd' ],
  lookups: true
}
[17:16:06] [trace] SdkProvider#withAwsCliCompatibleDefaults()
[17:16:06] Determining if we're on an EC2 instance.
[17:16:06] Does not look like an EC2 instance.
[17:16:06] Toolkit stack: CDKToolkit
[17:16:06] Setting "CDK_DEFAULT_REGION" environment variable to us-east-1
[17:16:06] [trace] SdkProvider#defaultAccount()
[17:16:06] [trace]   SdkProvider#defaultCredentials()
[17:16:06] Resolving default credentials
[17:16:06] [trace]   SDK#currentAccount()
[17:16:06] [trace]     SDK#forceCredentialRetrieval()
[17:16:06] Reading cached notices from /home/toha/.cdk/cache/notices.json
[17:16:06] Retrieved account ID <account_number> from disk cache
[17:16:06] Setting "CDK_DEFAULT_ACCOUNT" environment variable to <account_number>
[17:16:06] context: {
  'availability-zones:account=<account_number>:region=us-east-1': [
    'us-east-1a',
    'us-east-1b',
    'us-east-1c',
    'us-east-1d',
    'us-east-1e',
    'us-east-1f'
  ],
  'vpc-provider:account=<account_number>:filter.vpc-id=vpc-00fe623bb1cb307af:region=us-east-1:returnAsymmetricSubnets=true': {
    vpcId: 'vpc-00fe623bb1cb307af',
    vpcCidrBlock: '10.0.0.0/16',
    availabilityZones: [],
    subnetGroups: [ [Object], [Object] ]
  },
  'vpc-provider:account=<account_number>:filter.vpc-id=vpc-05c9125968a03fe97:region=us-east-1:returnAsymmetricSubnets=true': {
    vpcId: 'vpc-05c9125968a03fe97',
    vpcCidrBlock: '10.0.0.0/16',
    availabilityZones: [],
    subnetGroups: [ [Object], [Object] ]
  },
  'ami:account=<account_number>:filters.image-type.0=machine:filters.name.0=amzn-ami-vpc-nat-*:filters.state.0=available:owners.0=amazon:region=us-east-1': 'ami-04027ecc3f40c1801',
  'aws:cdk:enable-path-metadata': true,
  'aws:cdk:enable-asset-metadata': true,
  'aws:cdk:version-reporting': true,
  'aws:cdk:bundling-stacks': [ 'backend-cd' ]
}
yarn run v1.22.22
$ tsc -b
Done in 0.54s.
[17:16:07] --app points to a cloud assembly, so we bypass synth
Stack backend-cd
[17:16:07] [trace] SdkProvider#resolveEnvironment()
[17:16:07] [trace]   SdkProvider#defaultAccount()
[17:16:07] [trace] SdkProvider#baseCredentialsPartition()
[17:16:07] [trace]   SdkProvider#resolveEnvironment()
[17:16:07] [trace]   SdkProvider#obtainBaseCredentials()
[17:16:07] [trace]     SdkProvider#defaultAccount()
[17:16:07] [trace]     SdkProvider#defaultCredentials()
[17:16:07] [trace]   SDK#currentAccount()
[17:16:07] [trace]     SDK#forceCredentialRetrieval()
[17:16:07] Retrieved account ID <account_number> from disk cache
[17:16:07] [trace] SdkProvider#forEnvironment()
[17:16:07] [trace]   SdkProvider#resolveEnvironment()
[17:16:07] [trace]   SdkProvider#obtainBaseCredentials()
[17:16:07] [trace]     SdkProvider#defaultAccount()
[17:16:07] [trace]     SdkProvider#defaultCredentials()
[17:16:07] [trace]   SdkProvider#withAssumedRole()
[17:16:07] Assuming role 'arn:aws:iam::<account_number>:role/cdk-hnb659fds-lookup-role-<account_number>-us-east-1'.
[17:16:07] [trace]   SDK#forceCredentialRetrieval()
[17:16:08] [trace] SDK#ssm()
[17:16:08] [trace]   SDK#wrapServiceErrorHandling()
[17:16:08] [AWS ssm 200 0.708s 0 retries] getParameter({ Name: '/cdk-bootstrap/hnb659fds/version' })
[17:16:08] [trace] SDK#cloudFormation()
[17:16:08] [trace]   SDK#wrapServiceErrorHandling()
[17:16:09] [AWS cloudformation 200 0.548s 0 retries] describeStacks({ StackName: 'backend-cd' })
[17:16:10] [AWS cloudformation 200 1.063s 0 retries] getTemplate({ StackName: 'backend-cd', TemplateStage: 'Original' })
[17:16:10] [trace] SdkProvider#resolveEnvironment()
[17:16:10] [trace]   SdkProvider#defaultAccount()
Resources
[~] AWS::Logs::LogGroup CodeBuildResultsLogGroup CodeBuildResultsLogGroup535329BA replace
 └─ [~] LogGroupName (requires replacement)
     ├─ [-] /aws/codebuild/202403261110
     └─ [+] /aws/codebuild/202404181358

✨  Number of stacks with differences: 1
[17:16:10] Reading cached notices from /home/toha/.cdk/cache/notices.json

Reproduction Steps

Deploy a stack called backend-cd into CFN with CDK
Go to CloudFormation and copy the stack template and save it under tmp/
Synth stack into cdk.out:
cdk synth -a 'dist/aws/cloudformation-cd.js'
Run diff to compare local stack template content vs deployed stack template pulled from CloudFormation (removing --no-change-set doesnt help):

cdk diff --exclusively --color -vvv --template tmp/backend-cd.template.json -a cdk.out --no-change-set backend-cd
[17:00:30] CDK toolkit version: 2.133.0 (build dcc1e75)
[17:00:30] Command line arguments: {
  _: [ 'diff' ],
  exclusively: true,
  e: true,
  color: true,
  v: 3,
  verbose: 3,
  template: 'tmp/backend-cd.template.json',
  a: 'cdk.out',
  app: 'cdk.out',
  'change-set': false,
  changeSet: false,
  lookups: true,
  'ignore-errors': false,
  ignoreErrors: false,
  json: false,
  j: false,
  debug: false,
  ec2creds: undefined,
  i: undefined,
  'version-reporting': undefined,
  versionReporting: undefined,
  'path-metadata': undefined,
  pathMetadata: undefined,
  'asset-metadata': undefined,
  assetMetadata: undefined,
  'role-arn': undefined,
  r: undefined,
  roleArn: undefined,
  staging: true,
  'no-color': false,
  noColor: false,
  ci: false,
  'context-lines': 3,
  contextLines: 3,
  strict: false,
  'security-only': false,
  securityOnly: false,
  processed: false,
  quiet: false,
  q: false,
  '$0': 'cdk',
  STACKS: [ 'backend-cd' ],
  'S-t-a-c-k-s': [ 'backend-cd' ]
}
[17:00:30] cdk.json: {
  "app": "node --unhandled-rejections=strict dist/aws/deployment-app.js",
  "build": "yarn compile",
  "progress": "events"
}
[17:00:30] cdk.context.json: {
  "availability-zones:account=<account_number>:region=us-east-1": [
    "us-east-1a",
    "us-east-1b",
    "us-east-1c",
    "us-east-1d",
    "us-east-1e",
    "us-east-1f"
  ],
  "vpc-provider:account=<account_number>:filter.vpc-id=vpc-00fe623bb1cb307af:region=us-east-1:returnAsymmetricSubnets=true": {
    "vpcId": "vpc-00fe623bb1cb307af",
    "vpcCidrBlock": "10.0.0.0/16",
    "availabilityZones": [],
    "subnetGroups": [
      {
        "name": "Public",
        "type": "Public",
        "subnets": [
          {
            "subnetId": "subnet-0dcd6214a092e97bb",
            "cidr": "10.0.0.0/19",
            "availabilityZone": "us-east-1a",
            "routeTableId": "rtb-049bcd6081554adba"
          },
          {
            "subnetId": "subnet-0439f6c9f8173550d",
            "cidr": "10.0.32.0/19",
            "availabilityZone": "us-east-1b",
            "routeTableId": "rtb-001a243184f9a0bf6"
          },
          {
            "subnetId": "subnet-0c08d9ed938abd694",
            "cidr": "10.0.64.0/19",
            "availabilityZone": "us-east-1c",
            "routeTableId": "rtb-0ecad04cad49bd826"
          }
        ]
      },
      {
        "name": "Private",
        "type": "Private",
        "subnets": [
          {
            "subnetId": "subnet-0085d228d3e18249e",
            "cidr": "10.0.96.0/19",
            "availabilityZone": "us-east-1a",
            "routeTableId": "rtb-0e68dc83a7eaee52b"
          },
          {
            "subnetId": "subnet-0c1f57177b5f27e76",
            "cidr": "10.0.128.0/19",
            "availabilityZone": "us-east-1b",
            "routeTableId": "rtb-08af3c4138d1a26ca"
          },
          {
            "subnetId": "subnet-07492c442575dbd2c",
            "cidr": "10.0.160.0/19",
            "availabilityZone": "us-east-1c",
            "routeTableId": "rtb-0743875d0f322eab2"
          }
        ]
      }
    ]
  },
  "vpc-provider:account=<account_number>:filter.vpc-id=vpc-05c9125968a03fe97:region=us-east-1:returnAsymmetricSubnets=true": {
    "vpcId": "vpc-05c9125968a03fe97",
    "vpcCidrBlock": "10.0.0.0/16",
    "availabilityZones": [],
    "subnetGroups": [
      {
        "name": "Public",
        "type": "Public",
        "subnets": [
          {
            "subnetId": "subnet-0ae7ba04619dfc7af",
            "cidr": "10.0.0.0/19",
            "availabilityZone": "us-east-1a",
            "routeTableId": "rtb-04b0440e27503b7c2"
          },
          {
            "subnetId": "subnet-070b8abc78ee45cc4",
            "cidr": "10.0.32.0/19",
            "availabilityZone": "us-east-1b",
            "routeTableId": "rtb-03f934535932dccf3"
          },
          {
            "subnetId": "subnet-0dabcba1c8fee9aee",
            "cidr": "10.0.64.0/19",
            "availabilityZone": "us-east-1c",
            "routeTableId": "rtb-0f6f68b9a7bbd1df1"
          }
        ]
      },
      {
        "name": "Private",
        "type": "Private",
        "subnets": [
          {
            "subnetId": "subnet-0b12f11b33aa588f0",
            "cidr": "10.0.96.0/19",
            "availabilityZone": "us-east-1a",
            "routeTableId": "rtb-0c8fd18577d1db091"
          },
          {
            "subnetId": "subnet-0c26ce5ac93015603",
            "cidr": "10.0.128.0/19",
            "availabilityZone": "us-east-1b",
            "routeTableId": "rtb-033f5989cd6fec4db"
          },
          {
            "subnetId": "subnet-04f624dc04d0b23ba",
            "cidr": "10.0.160.0/19",
            "availabilityZone": "us-east-1c",
            "routeTableId": "rtb-020d6b2c9c6ce540d"
          }
        ]
      }
    ]
  },
  "ami:account=<account_number>:filters.image-type.0=machine:filters.name.0=amzn-ami-vpc-nat-*:filters.state.0=available:owners.0=amazon:region=us-east-1": "ami-04027ecc3f40c1801"
}
[17:00:30] merged settings: {
  versionReporting: true,
  assetMetadata: true,
  pathMetadata: true,
  output: 'cdk.out',
  app: 'cdk.out',
  build: 'yarn compile',
  progress: 'events',
  context: {},
  debug: false,
  toolkitBucket: {},
  staging: true,
  bundlingStacks: [ 'backend-cd' ],
  lookups: true
}
[17:00:30] [trace] SdkProvider#withAwsCliCompatibleDefaults()
[17:00:30] Determining if we're on an EC2 instance.
[17:00:30] Does not look like an EC2 instance.
[17:00:30] Toolkit stack: CDKToolkit
[17:00:30] Setting "CDK_DEFAULT_REGION" environment variable to us-east-1
[17:00:30] [trace] SdkProvider#defaultAccount()
[17:00:30] [trace]   SdkProvider#defaultCredentials()
[17:00:30] Resolving default credentials
[17:00:30] [trace]   SDK#currentAccount()
[17:00:30] [trace]     SDK#forceCredentialRetrieval()
[17:00:30] Reading cached notices from /home/toha/.cdk/cache/notices.json
[17:00:30] Retrieved account ID <account_number> from disk cache
[17:00:30] Setting "CDK_DEFAULT_ACCOUNT" environment variable to <account_number>
[17:00:30] context: {
  'availability-zones:account=<account_number>:region=us-east-1': [
    'us-east-1a',
    'us-east-1b',
    'us-east-1c',
    'us-east-1d',
    'us-east-1e',
    'us-east-1f'
  ],
  'vpc-provider:account=<account_number>:filter.vpc-id=vpc-00fe623bb1cb307af:region=us-east-1:returnAsymmetricSubnets=true': {
    vpcId: 'vpc-00fe623bb1cb307af',
    vpcCidrBlock: '10.0.0.0/16',
    availabilityZones: [],
    subnetGroups: [ [Object], [Object] ]
  },
  'vpc-provider:account=<account_number>:filter.vpc-id=vpc-05c9125968a03fe97:region=us-east-1:returnAsymmetricSubnets=true': {
    vpcId: 'vpc-05c9125968a03fe97',
    vpcCidrBlock: '10.0.0.0/16',
    availabilityZones: [],
    subnetGroups: [ [Object], [Object] ]
  },
  'ami:account=<account_number>:filters.image-type.0=machine:filters.name.0=amzn-ami-vpc-nat-*:filters.state.0=available:owners.0=amazon:region=us-east-1': 'ami-04027ecc3f40c1801',
  'aws:cdk:enable-path-metadata': true,
  'aws:cdk:enable-asset-metadata': true,
  'aws:cdk:version-reporting': true,
  'aws:cdk:bundling-stacks': [ 'backend-cd' ]
}
yarn run v1.22.22
$ tsc -b
Done in 0.50s.
[17:00:31] --app points to a cloud assembly, so we bypass synth
[17:00:31] Reading cached notices from /home/toha/.cdk/cache/notices.json

Cannot convert undefined or null to object
[17:00:31] TypeError: Cannot convert undefined or null to object
    at Function.keys (<anonymous>)
    at calculateTemplateDiff (/home/toha/.nvm/versions/node/v18.19.1/lib/node_modules/aws-cdk/lib/index.js:394:52274)
    at diffTemplate (/home/toha/.nvm/versions/node/v18.19.1/lib/node_modules/aws-cdk/lib/index.js:394:50944)
    at Object.fullDiff (/home/toha/.nvm/versions/node/v18.19.1/lib/node_modules/aws-cdk/lib/index.js:394:50728)
    at printStackDiff (/home/toha/.nvm/versions/node/v18.19.1/lib/node_modules/aws-cdk/lib/index.js:433:166276)
    at CdkToolkit.diff (/home/toha/.nvm/versions/node/v18.19.1/lib/node_modules/aws-cdk/lib/index.js:433:193682)
    at async exec4 (/home/toha/.nvm/versions/node/v18.19.1/lib/node_modules/aws-cdk/lib/index.js:488:54378)

Possible Solution

No response

Additional Information/Context

Logs of a working run with v2.132.0:

cdk diff --exclusively --color -vvv --template tmp/backend-cd.template.json -a cdk.out --no-change-set backend-cd
[16:51:09] CDK toolkit version: 2.132.0 (build 9a51c89)
[16:51:09] Command line arguments: {
  _: [ 'diff' ],
  exclusively: true,
  e: true,
  color: true,
  v: 3,
  verbose: 3,
  template: 'tmp/backend-cd.template.json',
  a: 'cdk.out',
  app: 'cdk.out',
  'change-set': false,
  changeSet: false,
  lookups: true,
  'ignore-errors': false,
  ignoreErrors: false,
  json: false,
  j: false,
  debug: false,
  ec2creds: undefined,
  i: undefined,
  'version-reporting': undefined,
  versionReporting: undefined,
  'path-metadata': undefined,
  pathMetadata: undefined,
  'asset-metadata': undefined,
  assetMetadata: undefined,
  'role-arn': undefined,
  r: undefined,
  roleArn: undefined,
  staging: true,
  'no-color': false,
  noColor: false,
  ci: false,
  'context-lines': 3,
  contextLines: 3,
  strict: false,
  'security-only': false,
  securityOnly: false,
  processed: false,
  quiet: false,
  q: false,
  '$0': 'cdk',
  STACKS: [ 'backend-cd' ],
  'S-t-a-c-k-s': [ 'backend-cd' ]
}
[16:51:09] cdk.json: {
  "app": "node --unhandled-rejections=strict dist/aws/deployment-app.js",
  "build": "yarn compile",
  "progress": "events"
}
[16:51:09] cdk.context.json: {
  "availability-zones:account=<account_number>:region=us-east-1": [
    "us-east-1a",
    "us-east-1b",
    "us-east-1c",
    "us-east-1d",
    "us-east-1e",
    "us-east-1f"
  ],
  "vpc-provider:account=<account_number>:filter.vpc-id=vpc-00fe623bb1cb307af:region=us-east-1:returnAsymmetricSubnets=true": {
    "vpcId": "vpc-00fe623bb1cb307af",
    "vpcCidrBlock": "10.0.0.0/16",
    "availabilityZones": [],
    "subnetGroups": [
      {
        "name": "Public",
        "type": "Public",
        "subnets": [
          {
            "subnetId": "subnet-0dcd6214a092e97bb",
            "cidr": "10.0.0.0/19",
            "availabilityZone": "us-east-1a",
            "routeTableId": "rtb-049bcd6081554adba"
          },
          {
            "subnetId": "subnet-0439f6c9f8173550d",
            "cidr": "10.0.32.0/19",
            "availabilityZone": "us-east-1b",
            "routeTableId": "rtb-001a243184f9a0bf6"
          },
          {
            "subnetId": "subnet-0c08d9ed938abd694",
            "cidr": "10.0.64.0/19",
            "availabilityZone": "us-east-1c",
            "routeTableId": "rtb-0ecad04cad49bd826"
          }
        ]
      },
      {
        "name": "Private",
        "type": "Private",
        "subnets": [
          {
            "subnetId": "subnet-0085d228d3e18249e",
            "cidr": "10.0.96.0/19",
            "availabilityZone": "us-east-1a",
            "routeTableId": "rtb-0e68dc83a7eaee52b"
          },
          {
            "subnetId": "subnet-0c1f57177b5f27e76",
            "cidr": "10.0.128.0/19",
            "availabilityZone": "us-east-1b",
            "routeTableId": "rtb-08af3c4138d1a26ca"
          },
          {
            "subnetId": "subnet-07492c442575dbd2c",
            "cidr": "10.0.160.0/19",
            "availabilityZone": "us-east-1c",
            "routeTableId": "rtb-0743875d0f322eab2"
          }
        ]
      }
    ]
  },
  "vpc-provider:account=<account_number>:filter.vpc-id=vpc-05c9125968a03fe97:region=us-east-1:returnAsymmetricSubnets=true": {
    "vpcId": "vpc-05c9125968a03fe97",
    "vpcCidrBlock": "10.0.0.0/16",
    "availabilityZones": [],
    "subnetGroups": [
      {
        "name": "Public",
        "type": "Public",
        "subnets": [
          {
            "subnetId": "subnet-0ae7ba04619dfc7af",
            "cidr": "10.0.0.0/19",
            "availabilityZone": "us-east-1a",
            "routeTableId": "rtb-04b0440e27503b7c2"
          },
          {
            "subnetId": "subnet-070b8abc78ee45cc4",
            "cidr": "10.0.32.0/19",
            "availabilityZone": "us-east-1b",
            "routeTableId": "rtb-03f934535932dccf3"
          },
          {
            "subnetId": "subnet-0dabcba1c8fee9aee",
            "cidr": "10.0.64.0/19",
            "availabilityZone": "us-east-1c",
            "routeTableId": "rtb-0f6f68b9a7bbd1df1"
          }
        ]
      },
      {
        "name": "Private",
        "type": "Private",
        "subnets": [
          {
            "subnetId": "subnet-0b12f11b33aa588f0",
            "cidr": "10.0.96.0/19",
            "availabilityZone": "us-east-1a",
            "routeTableId": "rtb-0c8fd18577d1db091"
          },
          {
            "subnetId": "subnet-0c26ce5ac93015603",
            "cidr": "10.0.128.0/19",
            "availabilityZone": "us-east-1b",
            "routeTableId": "rtb-033f5989cd6fec4db"
          },
          {
            "subnetId": "subnet-04f624dc04d0b23ba",
            "cidr": "10.0.160.0/19",
            "availabilityZone": "us-east-1c",
            "routeTableId": "rtb-020d6b2c9c6ce540d"
          }
        ]
      }
    ]
  },
  "ami:account=<account_number>:filters.image-type.0=machine:filters.name.0=amzn-ami-vpc-nat-*:filters.state.0=available:owners.0=amazon:region=us-east-1": "ami-04027ecc3f40c1801"
}
[16:51:09] merged settings: {
  versionReporting: true,
  assetMetadata: true,
  pathMetadata: true,
  output: 'cdk.out',
  app: 'cdk.out',
  build: 'yarn compile',
  progress: 'events',
  context: {},
  debug: false,
  toolkitBucket: {},
  staging: true,
  bundlingStacks: [ 'backend-cd' ],
  lookups: true
}
[16:51:09] [trace] SdkProvider#withAwsCliCompatibleDefaults()
[16:51:09] Determining if we're on an EC2 instance.
[16:51:09] Does not look like an EC2 instance.
[16:51:09] Toolkit stack: CDKToolkit
[16:51:09] Setting "CDK_DEFAULT_REGION" environment variable to us-east-1
[16:51:09] [trace] SdkProvider#defaultAccount()
[16:51:09] [trace]   SdkProvider#defaultCredentials()
[16:51:09] Resolving default credentials
[16:51:09] [trace]   SDK#currentAccount()
[16:51:09] [trace]     SDK#forceCredentialRetrieval()
[16:51:09] Reading cached notices from /home/toha/.cdk/cache/notices.json
[16:51:09] Retrieved account ID <account_number> from disk cache
[16:51:09] Setting "CDK_DEFAULT_ACCOUNT" environment variable to <account_number>
[16:51:09] context: {
  'availability-zones:account=<account_number>:region=us-east-1': [
    'us-east-1a',
    'us-east-1b',
    'us-east-1c',
    'us-east-1d',
    'us-east-1e',
    'us-east-1f'
  ],
  'vpc-provider:account=<account_number>:filter.vpc-id=vpc-00fe623bb1cb307af:region=us-east-1:returnAsymmetricSubnets=true': {
    vpcId: 'vpc-00fe623bb1cb307af',
    vpcCidrBlock: '10.0.0.0/16',
    availabilityZones: [],
    subnetGroups: [ [Object], [Object] ]
  },
  'vpc-provider:account=<account_number>:filter.vpc-id=vpc-05c9125968a03fe97:region=us-east-1:returnAsymmetricSubnets=true': {
    vpcId: 'vpc-05c9125968a03fe97',
    vpcCidrBlock: '10.0.0.0/16',
    availabilityZones: [],
    subnetGroups: [ [Object], [Object] ]
  },
  'ami:account=<account_number>:filters.image-type.0=machine:filters.name.0=amzn-ami-vpc-nat-*:filters.state.0=available:owners.0=amazon:region=us-east-1': 'ami-04027ecc3f40c1801',
  'aws:cdk:enable-path-metadata': true,
  'aws:cdk:enable-asset-metadata': true,
  'aws:cdk:version-reporting': true,
  'aws:cdk:bundling-stacks': [ 'backend-cd' ]
}
yarn run v1.22.22
$ tsc -b
Done in 0.51s.
[16:51:10] --app points to a cloud assembly, so we bypass synth
[16:51:10] [trace] SdkProvider#resolveEnvironment()
[16:51:10] [trace]   SdkProvider#defaultAccount()
[16:51:10] [trace] SdkProvider#baseCredentialsPartition()
[16:51:10] [trace]   SdkProvider#resolveEnvironment()
[16:51:10] [trace]   SdkProvider#obtainBaseCredentials()
[16:51:10] [trace]     SdkProvider#defaultAccount()
[16:51:10] [trace]     SdkProvider#defaultCredentials()
[16:51:10] [trace]   SDK#currentAccount()
[16:51:10] [trace]     SDK#forceCredentialRetrieval()
[16:51:10] Retrieved account ID <account_number> from disk cache
[16:51:10] [trace] SdkProvider#forEnvironment()
[16:51:10] [trace]   SdkProvider#resolveEnvironment()
[16:51:10] [trace]   SdkProvider#obtainBaseCredentials()
[16:51:10] [trace]     SdkProvider#defaultAccount()
[16:51:10] [trace]     SdkProvider#defaultCredentials()
[16:51:10] [trace]   SdkProvider#withAssumedRole()
[16:51:10] Assuming role 'arn:aws:iam::<account_number>:role/cdk-hnb659fds-deploy-role-<account_number>-us-east-1'.
[16:51:10] [trace]   SDK#forceCredentialRetrieval()
[16:51:11] [trace] SDK#cloudFormation()
[16:51:11] [trace]   SDK#wrapServiceErrorHandling()
[16:51:11] [AWS cloudformation 200 0.722s 0 retries] describeStacks({ StackName: 'backend-cd' })
Resources
[~] AWS::Logs::LogGroup CodeBuildResultsLogGroup CodeBuildResultsLogGroup535329BA replace
 └─ [~] LogGroupName (requires replacement)
     ├─ [-] /aws/codebuild/202403261110
     └─ [+] /aws/codebuild/202404181350

✨  Number of stacks with differences: 1
[16:51:12] Reading cached notices from /home/toha/.cdk/cache/notices.json

NOTICES         (What's this? https://github.com/aws/aws-cdk/wiki/CLI-Notices)

29420	(cli): List stack output change issue.

	Overview: v2.132.0 introduced functionality to the cdk list command to
	          display stack dependencies. This feature introduced a change
	          that displays stack ids over displayName altering the
	          existing list functionality

	Affected versions: cli: 2.132.0

	More information at: https://github.com/aws/aws-cdk/issues/29420


29483	(cli): Upgrading to v2.132.0 or v2.132.1 breaks cdk diff functionality

	Overview: cdk diff functionality used to rely on assuming lookup-role.
	          With a recent change present in v2.132.0 and v2.132.1, it is
	          now trying to assume deploy-role with the lookup-role. This
	          leads to an authorization error if permissions were not
	          defined to assume deploy-role.

	Affected versions: cli: >=2.132.0 <=2.132.1

	More information at: https://github.com/aws/aws-cdk/issues/29483

CDK CLI Version

2.133.0 (build dcc1e75)

Framework Version

No response

Node.js Version

v18.19.1

OS

Ubuntu 22.04.4 LTS

Language

TypeScript

Language Version

4.7.3

Other information

Looking at commits between 2.132.0 and 2.133.0 there were at least two PRs merged related to diffing but Im not competent on CDK to understand if they could be related: https://github.com/aws/aws-cdk/commits/main/?since=2024-03-09&until=2024-03-15

The text was updated successfully, but these errors were encountered:

### Issue # (if applicable) Closes #29890. ### Reason for this change `cdk diff` crashes with `--template`. ### Description of changes The addition of changeset logic had a leftover refactor that should not have been leftover (trying to pass a template directly instead of a stack artifact). Removes changeset creation code from fixed template mode, which should never create a changeset, and adds a unit test for fixed template diffs so we don't break this in the future. ### Description of how you validated changes unit tests + manual testing. CLI integ tests will be added in a follow-up PR. ### Checklist - [x] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md) ---- *By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

github-actions · 2024-04-24T01:46:11Z

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toha-nordic added bug This issue is a bug. needs-triage This issue or PR still needs to be triaged. labels Apr 18, 2024

github-actions bot added the package/tools Related to AWS CDK Tools or CLI label Apr 18, 2024

pahud added cli Issues related to the CDK CLI p1 effort/medium Medium work item – several days of effort and removed needs-triage This issue or PR still needs to be triaged. labels Apr 18, 2024

comcalvi mentioned this issue Apr 18, 2024

fix(CLI): diff --template crashes #29896

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Weekly issue metrics report #29921

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[Snyk] Upgrade: , aws-cdk NOUIY/aws-solutions-constructs#98

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[Snyk] Upgrade aws-cdk-lib from 2.136.1 to 2.140.0 rwlxxvii/containers#124

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(cli): `cdk diff --template` >=2.133.0 crashes #29890

(cli): `cdk diff --template` >=2.133.0 crashes #29890

toha-nordic commented Apr 18, 2024 •

edited

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github-actions bot commented Apr 24, 2024

aws-cdk-automation commented Jul 25, 2024

(cli): cdk diff --template >=2.133.0 crashes #29890

(cli): cdk diff --template >=2.133.0 crashes #29890

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toha-nordic commented Apr 18, 2024 • edited Loading

Describe the bug

Expected Behavior

Current Behavior

Reproduction Steps

Possible Solution

Additional Information/Context

CDK CLI Version

Framework Version

Node.js Version

OS

Language

Language Version

Other information

github-actions bot commented Apr 24, 2024

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aws-cdk-automation commented Jul 25, 2024

(cli): `cdk diff --template` >=2.133.0 crashes #29890

(cli): `cdk diff --template` >=2.133.0 crashes #29890

toha-nordic commented Apr 18, 2024 •

edited

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