cli: hotswapping Lambda environment variable with tokens results in an error #22088
Description
Describe the bug
Hi I found the following issue regarding hotswap. I'll dig into the actual code to find the root cause later.
Expected Behavior
Hotswap successes.
Current Behavior
When hotswapping, the error below happens.
❌ SampleStack failed: InvalidParameterType: Expected params.Environment.Variables['someToken'] to be a string
at ParamValidator.fail (/Users/cdk/sample/node_modules/aws-sdk/lib/param_validator.js:50:37)
at ParamValidator.validateType (/Users/cdk/sample/node_modules/aws-sdk/lib/param_validator.js:233:10)
at ParamValidator.validateString (/Users/cdk/sample/node_modules/aws-sdk/lib/param_validator.js:155:32)
at ParamValidator.validateScalar (/Users/cdk/sample/node_modules/aws-sdk/lib/param_validator.js:131:21)
at ParamValidator.validateMember (/Users/cdk/sample/node_modules/aws-sdk/lib/param_validator.js:95:21)
at ParamValidator.validateMap (/Users/cdk/sample/node_modules/aws-sdk/lib/param_validator.js:118:14)
at ParamValidator.validateMember (/Users/cdk/sample/node_modules/aws-sdk/lib/param_validator.js:93:21)
at ParamValidator.validateStructure (/Users/cdk/sample/node_modules/aws-sdk/lib/param_validator.js:76:14)
at ParamValidator.validateMember (/Users/cdk/sample/node_modules/aws-sdk/lib/param_validator.js:89:21)
at ParamValidator.validateStructure (/Users/cdk/sample/node_modules/aws-sdk/lib/param_validator.js:76:14) {
code: 'InvalidParameterType',
time: 2022-09-17T02:35:50.431Z
}
❌ Deployment failed: Error: Stack Deployments Failed: InvalidParameterType: Expected params.Environment.Variables['someToken'] to be a string
at deployStacks (/Users/cdk/sample/node_modules/aws-cdk/lib/deploy.ts:61:11)
at processTicksAndRejections (node:internal/process/task_queues:96:5)
at CdkToolkit.deploy (/Users/cdk/sample/node_modules/aws-cdk/lib/cdk-toolkit.ts:312:7)
at initCommandLine (/Users/cdk/sample/node_modules/aws-cdk/lib/cli.ts:349:12)
Stack Deployments Failed: InvalidParameterType: Expected params.Environment.Variables['someToken'] to be a string
Reproduction Steps
- Deploy the stack below
- Change
someLiteral: '1'tosomeLiteral: '2'to trigger a hotswap - run
cdk deploy --hotswapand you can see the above error.
import * as cdk from 'aws-cdk-lib';
import { Construct } from 'constructs';
import * as lambda from 'aws-cdk-lib/aws-lambda';
import { Role, ServicePrincipal } from 'aws-cdk-lib/aws-iam';
export class SampleStack extends cdk.Stack {
constructor(scope: Construct, id: string, props?: cdk.StackProps) {
super(scope, id, props);
const role = new Role(this, 'Role', {
assumedBy: new ServicePrincipal('sns.amazonaws.com'),
});
new lambda.Function(this, 'Function', {
code: lambda.Code.fromInline('exports.handler=()=>{}'),
runtime: lambda.Runtime.NODEJS_16_X,
handler: 'index.handler',
environment: {
someToken: role.roleArn,
someLiteral: '1',
},
});
}
}Possible Solution
No response
Additional Information/Context
Lambda environment variable hotswap was introduced in #21532.
CDK CLI Version
2.42.0
Framework Version
2.42.0
Node.js Version
16.13.1
OS
macOS
Language
Typescript
Language Version
No response
Other information
No response