70 lines
2.3 KiB
Go
70 lines
2.3 KiB
Go
package middlewares
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import (
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"github.com/cloudskiff/driftctl/pkg/resource"
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"github.com/cloudskiff/driftctl/pkg/resource/aws"
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"github.com/sirupsen/logrus"
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)
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// Each default vpc has an internet gateway attached that should not be seen as unmanaged if not managed by IaC
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// This middleware ignores default internet gateway from unmanaged resources if not managed by IaC
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type AwsDefaultInternetGateway struct{}
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func NewAwsDefaultInternetGateway() AwsDefaultInternetGateway {
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return AwsDefaultInternetGateway{}
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}
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func (m AwsDefaultInternetGateway) Execute(remoteResources, resourcesFromState *[]*resource.Resource) error {
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newRemoteResources := make([]*resource.Resource, 0)
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for _, remoteResource := range *remoteResources {
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// Ignore all resources other than internet gateways
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if remoteResource.TerraformType() != aws.AwsInternetGatewayResourceType {
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newRemoteResources = append(newRemoteResources, remoteResource)
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continue
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}
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// Ignore all non-default internet gateways
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if !isDefaultInternetGateway(remoteResource, remoteResources) {
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newRemoteResources = append(newRemoteResources, remoteResource)
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continue
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}
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// Check if internet gateway is managed by IaC
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existInState := false
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for _, stateResource := range *resourcesFromState {
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if remoteResource.Equal(stateResource) {
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existInState = true
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break
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}
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}
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// Include resource if it's managed in IaC
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if existInState {
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newRemoteResources = append(newRemoteResources, remoteResource)
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continue
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}
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// Else, resource is not added to newRemoteResources slice so it will be ignored
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logrus.WithFields(logrus.Fields{
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"id": remoteResource.TerraformId(),
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"type": remoteResource.TerraformType(),
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}).Debug("Ignoring default internet gateway as it is not managed by IaC")
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}
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*remoteResources = newRemoteResources
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return nil
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}
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// Return true if the internet gateway is the default one (e.g. attached to the default vpc)
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func isDefaultInternetGateway(internetGateway *resource.Resource, remoteResources *[]*resource.Resource) bool {
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for _, remoteResource := range *remoteResources {
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if remoteResource.TerraformType() == aws.AwsDefaultVpcResourceType {
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vpcId, exist := internetGateway.Attrs.Get("vpc_id")
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return exist && vpcId == remoteResource.TerraformId()
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}
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}
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return false
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}
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