amazon s3 - Remove import reference from Dynamodb resource in AWS CDK after creation - Stack Overflow

I have a table in cdk that is created and populated from s3, something like:

const bucket = new s3.Bucket(this, 'ImportBucket', {
    bucketName: 'ddb-data-for-import'
});
bucket.addToResourcePolicy(
    new PolicyStatement({
    actions: [
        's3:AbortMultipartUpload',
        's3:PutObject',
        's3:PutObjectAcl'
    ],
    resources: [`${bucket.bucketArn}/*`],
    principals: [new ArnPrincipal('arn:xxx')],
}));
new ddb.Table(this, 'ImportedDdb', {
    tableName: `imported`,
    billingMode: ddb.BillingMode.PAY_PER_REQUEST,
    importSource: {
        bucket,
        keyPrefix: `AWSDynamoDB/123123123-321312321/data`,
        inputFormat: ddb.InputFormat.dynamoDBJson(),
        compressionType: ddb.InputCompressionType.GZIP,
    },
    partitionKey: { name: 'pk', type: ddb.AttributeType.STRING },
    sortKey: { name: 'sk', type: ddb.AttributeType.STRING },
});

It works, and the data is imported, but after the initial run, I see no point in keeping the bucket alive with GBs of data that is going to get stale one minute later. So I thought that I could remove the importSource property of the table and It would let me redeploy without a problem, but Cloudformation tries to recreate the table, causing data loss.

Is there a way to clean up this resource? Should I? I don't see a point in keeping the bucket since if anything happens and the import ought to be rerun, I'd have to export a newer snapshot anyway

I have a table in cdk that is created and populated from s3, something like:

const bucket = new s3.Bucket(this, 'ImportBucket', {
    bucketName: 'ddb-data-for-import'
});
bucket.addToResourcePolicy(
    new PolicyStatement({
    actions: [
        's3:AbortMultipartUpload',
        's3:PutObject',
        's3:PutObjectAcl'
    ],
    resources: [`${bucket.bucketArn}/*`],
    principals: [new ArnPrincipal('arn:xxx')],
}));
new ddb.Table(this, 'ImportedDdb', {
    tableName: `imported`,
    billingMode: ddb.BillingMode.PAY_PER_REQUEST,
    importSource: {
        bucket,
        keyPrefix: `AWSDynamoDB/123123123-321312321/data`,
        inputFormat: ddb.InputFormat.dynamoDBJson(),
        compressionType: ddb.InputCompressionType.GZIP,
    },
    partitionKey: { name: 'pk', type: ddb.AttributeType.STRING },
    sortKey: { name: 'sk', type: ddb.AttributeType.STRING },
});

It works, and the data is imported, but after the initial run, I see no point in keeping the bucket alive with GBs of data that is going to get stale one minute later. So I thought that I could remove the importSource property of the table and It would let me redeploy without a problem, but Cloudformation tries to recreate the table, causing data loss.

Is there a way to clean up this resource? Should I? I don't see a point in keeping the bucket since if anything happens and the import ought to be rerun, I'd have to export a newer snapshot anyway

• amazon-s3
• amazon-dynamodb
• aws-cloudformation
• aws-cdk

Share Improve this question Follow asked Jan 2 at 15:41 Alisson GalizaAlisson Galiza 1311 silver badge33 bronze badges

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1 Answer 1

Sorted by: Reset to default 0

First you should add a retain policy and then deploy, then try to remove the import source, that will keep the table intact.

removalPolicy: RemovalPolicy.RETAIN

I'm not well versed in the importSource as it wasn't me who created it. But I believe the removalPolicy should allow you to achieve what you like.

https://docs.aws.amazon.com/cdk/api/v1/docs/@aws-cdk_core.RemovalPolicy.html