.NET-使用AWS CDK为.NET的低级CloudFormation资源构造标记EC2实例

Question

While we all wait for a higher-level / hand-written Construct to be available for creating an EC2 instance using AWS CDK, I'm trying to use the auto-generated low-level CloudFormation Resource available at Amazon.CDK.AWS.EC2.cloudformation.InstanceResource_ in the Amazon.CDK.AWS.EC2 NuGet package .

My test app is a .NET Core Console App with the Amazon.CDK.AWS.EC2 NuGet package as the only other dependency. Here's the code:

using System;
using System.Linq;

namespace AWSCDKEval
{
    class Program
    {
        static void Main(string[] args)
        {
            // Create a new app. The first argument is used to display a usage message for this app.
            var appArgs = new [] { $"dotnet ${nameof(AWSCDKEval)}" }
                .Concat(args)
                .ToArray();
            var app = new Amazon.CDK.App(appArgs);

            new TestStack(app, "test-aws-cdk-stack-1", new Amazon.CDK.StackProps());

            // Your app must write the return value of app.Run() to standard output. The `cdk init`
            // and `cdk synth` commands require this output.
            Console.WriteLine(app.Run());
        }
    }

    public class TestStack : Amazon.CDK.Stack
    {
        public TestStack(Amazon.CDK.App parent, string name, Amazon.CDK.IStackProps props) : base(parent, name, props)
        {
            new Amazon.CDK.AWS.EC2.cloudformation.InstanceResource_(
                this, 
                "testInstance1", 
                new Amazon.CDK.AWS.EC2.cloudformation.InstanceResourceProps
                {
                    ImageId = "ami-0f1155cc2cb6b0cfd", // Microsoft Windows Server 2016 Base
                    InstanceType = "t2.micro",
                    KeyName = "my_key",
                    Tags = new []
                    {
                        new Amazon.CDK.Tag { Key = "Name", Value = "test-instance-1" },
                        new Amazon.CDK.Tag { Key = "foo", Value = "bar" }
                    }
                });
        }
    }
}

You then compile the project and use the CDK to synth it into CloudFormation templates and all settings but the tags make it.

dotnet build <folder-with-code>
cdk synth --output <folder-where-to-write-cf-templates>

And the output:

Resources:
    testInstance1:
        Type: 'AWS::EC2::Instance'
        Properties:
            ImageId: ami-0f1155cc2cb6b0cfd
            InstanceType: t2.micro
            KeyName: my_key
    CDKMetadata:
        Type: 'AWS::CDK::Metadata'
        Properties:
            Modules: '@aws-cdk/aws-ec2=0.9.1,@aws-cdk/aws-iam=0.9.1,@aws-cdk/cdk=0.9.1,@aws-cdk/cx-api=0.9.1,js-base64=2.4.9'

Now, I totally understand that the CDK is in very early stages and not recommended for any dev work, but the best part is the availability of all native resources under the cloudformation namespace which I plan to use while the CDK grows.

Any help in the right direction would be appreciated!

Answer 1

Turns out, this is currently a bug in AWS CDK and does work if you use typescript instead of any C# .NET . I've logged an issue for the same.