Subscription Filter not added to cloudformation stack

❓ Subscription Filter Object not create relative CloudFormation resources

The Question

Using SubscriptionFilter object, the relative resource are not created in cloudformation stack. Relative error are not showed. Synth and deploy command doesn’t return any error.

–>

Environment

• **CDK CLI Version:1.13.1
• **Module Version: aws-logs
• **OS: MacOSX
• **Language: Javascipt

Other information

Here is the code:

let cloudWatchGroup = cl_logs.LogGroup.fromLogGroupArn(this, 'lambda-log-group', res); let filterPattern = cl_logs.FilterPattern.allEvents(); const subscriptionFilter = new cl_logs.SubscriptionFilter(this, 'elastic-search-subscription',{ destination: lambdaDestination, filterPattern: filterPattern, logGroup: cloudWatchGroup, }); `

[nmussy]

Alright, I’ve found the issue. The template is being initialized with outdated aws-cdk and @aws-cdk/core packages if your cdk CLI is outdated. Upgrading them solves the issue.

$ cdk --version
0.36.0 (build 6d38487)

$ cdk init --language javascript
Applying project template app for javascript
Executing npm install...
npm notice created a lockfile as package-lock.json. You should commit this file.

$ npm outdated
Package        Current   Wanted   Latest  Location
@aws-cdk/core   0.36.2   0.36.2   1.13.1  deploy
@types/node    8.10.45  8.10.45  12.11.1  deploy
aws-cdk         0.36.2   0.36.2   1.13.1  deploy

$ npm i aws-cdk@latest @aws-cdk/core@latest
+ aws-cdk@1.13.1
+ @aws-cdk/core@1.13.1

$ npm outdated
Package      Current   Wanted   Latest  Location
@types/node  8.10.45  8.10.45  12.11.1  deploy

I’m used to using local packages with npx, which is why mine is so old. Yours is probably more recent, but doesn’t have the recently merged #2821, which removed _references from ConstructNode.

To upgrade your global CDK CLI version:

npm i -g aws-cdk@latest

Not sure what we should do about this issue.

[nmussy]

Hey @fedeBollo,

Trying to read your reproduction stack was a little hard, so here is what I came up with, tell me if I’m too far off your use-case:

import {FilterPattern, LogGroup, SubscriptionFilter} from '@aws-cdk/aws-logs';
import {Code, Function as LambdaFn, Runtime} from '@aws-cdk/aws-lambda';
import {LambdaDestination} from '@aws-cdk/aws-logs-destinations';
import {Construct, Stack, StackProps} from '@aws-cdk/core';
// ...
const cloudWatchGroup = LogGroup.fromLogGroupArn(
  this,
  'lambda-log-group',
  'arn:aws:logs:us-east-1:123456789012:log-group:my-log-group',
);

const filterPattern = FilterPattern.allEvents();

const lambda = new LambdaFn(this, 'function', {
  runtime: Runtime.NODEJS_8_10,
  handler: 'hello.handler',
  code: Code.fromInline('() => {}'),
});

new SubscriptionFilter(this, 'elastic-search-subscription', {
  destination: new LambdaDestination(lambda),
  filterPattern: filterPattern,
  logGroup: cloudWatchGroup,
});

When I run cdk synth, I get the following:

// ...
  elasticsearchsubscription333E993D:
    Type: AWS::Logs::SubscriptionFilter
    Properties:
      DestinationArn:
        Fn::GetAtt:
          - functionF19B1A04
          - Arn
      FilterPattern: ""
      LogGroupName: test
    Metadata:
      aws:cdk:path: TestStack10/elastic-search-subscription/Resource

Is this not what you are getting?

EDIT: I’ve edited my example to use a valid log group ARN, without it the logGroupName property wasn’t set.