localstack / localstack/aws-cdk-local

SNS Filters not honoring Message Body Filter

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Dominant language
JavaScript
Stars
305
Forks
18
PR merge metrics
No merged PRs in 30d

Description

The following snippet behaves differently between local stack and aws:

 topic.addSubscription(
          new SqsSubscription(queue, {
            filterPolicyWithMessageBody: {
              eventType: sns.FilterOrPolicy.filter(
                sns.SubscriptionFilter.stringFilter({
                  allowlist: [...listener.getEventTypes()],
                })
              ),
            },
          })

sns get-subscription-attributes:
In AWS via CDK:
"FilterPolicyScope": "MessageBody",
via CDKLocal:
"FilterPolicyScope": "MessageAttributes"

Env:
Node 16.15.1 + "aws-cdk-lib": "2.68.0",

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First steps

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  3. Fork the repository and make your change on a branch.
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Research direction

Reproduce the shown CDK subscription setup with Node 16.15.1 and compare the get-subscription-attributes output from CDKLocal and AWS. Trace the handling of filterPolicyWithMessageBody and verify that the resulting FilterPolicyScope is MessageBody rather than MessageAttributes.

Written by the indexing model from the issue text.

Assessment

Tech stack
aws, javascript, node.js
Domain
cloud
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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