Filter AWS resources using regex in aws-sdk-go

Question

So I have some different types of aws resources tagged as xxx/yyy/<generated_id>. I need to fetch them using go-sdk.

Here is a sample code for subnets, the filters look the same for every other resource.

This doesn't work.

var resp *ec2.DescribeSubnetsOutput
resp, err = d.ec2Client().DescribeSubnets(&ec2.DescribeSubnetsInput{
    Filters: []*ec2.Filter{
        {
            Name:   aws.String("vpc-id"),
            Values: []*string{&d.VpcId},
        },
        {
            Name:   aws.String(fmt.Sprintf(`tag:"xxx/yyy.[*]"`),
            Values: []*string{aws.String("owned")},
        },
    },
})

This does: aws ec2 describe-subnets --filters `Name=tag:"xxx/yyy.[*]",Values=owned`

I'm obviously doing something wrong, can someone point out what?

Answer 1

There is nothing in the API documentation to suggest that DescribeSubnets accepts a regular expression in filter names: https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_DescribeSubnets.html

If it works in the CLI, that's likely something the CLI is doing on top of what the SDK offers. The Go SDK is like any other AWS SDK; it exposes the AWS API in a language-specific way. The AWS CLI adds convenience features on top of the API to make it more useful on the command line, but that doesn't mean those features are exposed by the API or any published SDK.