feat(cloudwatch-applicationsignals-mcp-server): add cdk mock project for ec2 …

[yiyuan-he]

Fixes

Summary

This PR adds a CDK TypeScript stack that represents infrastructure without Application Signals enabled. It serves as a baseline test fixture for evaluating the new get_enablement_guide tool - testing whether an AI agent can successfully enable Application Signals by modifying this IaC.

Changes

• CDK stack (samples/cloudwatch-applicationsignals-mcp-server/get-enablement-guide-samples/infrastructure/ec2/cdk/) that provisions:

  • EC2 instance with Docker
  • IAM role with basic permissions (S3, SSM, ECR) - NO CloudWatchAgentServerPolicy
  • Security group and VPC configuration
  • UserData script to pull and run container from ECR
  • Missing: CloudWatch Agent, ADOT, OTel configuration, Application Signals setup

• Single Python Flask configuration: CDK codebase with one configuration file for Python Flask runtime (will add other languages in follow-ups)

  • python-flask.json - specifies port, health check path, ECR image name
  • Each config specifies language-specific parameters (port, health check path, ECR image name, service name)

CDK Creation Process

This CDK stack was created following the AWS CDK TypeScript guide using the standard initialization command:

cdk init app --language=typescript

Testing

• Stack successfully deploys with cdk deploy PythonFlaskCdkStack
• EC2 instance provisions and pulls Docker image from ECR
• Application container runs successfully
• Verified CloudWatch Agent and Application Signals components are NOT present (as expected for baseline)

User experience

Before: No mock project infrastructure exists for evaluation testing.

After: Evaluation framework has a realistic, language-agnostic CDK stack representing infrastructure WITHOUT Application Signals. This allows automated testing of the get_enablement_guide tool across multiple language runtimes by verifying the agent can transform this baseline IaC into Application Signals-enabled infrastructure.

Checklist

If your change doesn't seem to apply, please leave them unchecked.

• [x] I have reviewed the contributing guidelines
• [x] I have performed a self-review of this change
• [x] Changes have been tested
• [x] Changes are documented

Is this a breaking change? (Y/N) N

RFC issue number:

Checklist:

• [ ] Migration process documented
• [ ] Implement warnings (if it can live side by side)

Acknowledgment

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of the project license.

[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 90.26%. Comparing base (4008452) to head (70e2216).

Additional details and impacted files

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  Coverage   90.26%   90.26%           
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  Files         781      781           
  Lines       59910    59910           
  Branches     9718     9718           
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  Hits        54075    54075           
  Misses       3646     3646           
  Partials     2189     2189           

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[scottschreckengaust]

These may belong as ./samples/?

[yiyuan-he]

These may belong as ./samples/?

Thanks for your review Scott, will move things around and address things on other PR as well.

[alexa-perlov]

Can you add the sample to the docs site as well? Take a look at: https://github.com/awslabs/mcp/tree/main/docusaurus/docs/samples

[yiyuan-he]

Can you add the sample to the docs site as well? Take a look at: https://github.com/awslabs/mcp/tree/main/docusaurus/docs/samples

Added - let me know if it looks good @alexa-perlov