driftctl/pkg/middlewares/aws_api_gateway_base_path_m...

80 lines
2.8 KiB
Go

package middlewares
import (
"github.com/snyk/driftctl/enumeration/resource"
"github.com/snyk/driftctl/pkg/resource/aws"
)
// AwsApiGatewayBasePathMappingReconciler is used to reconcile API Gateway base path mapping (v1 and v2)
// from both remote and state resources because v1|v2 AWS SDK list endpoints return all mappings
// without distinction.
type AwsApiGatewayBasePathMappingReconciler struct{}
func NewAwsApiGatewayBasePathMappingReconciler() AwsApiGatewayBasePathMappingReconciler {
return AwsApiGatewayBasePathMappingReconciler{}
}
func (m AwsApiGatewayBasePathMappingReconciler) Execute(remoteResources, resourcesFromState *[]*resource.Resource) error {
newRemoteResources := make([]*resource.Resource, 0)
managedApiMapping := make([]*resource.Resource, 0)
unmanagedApiMapping := make([]*resource.Resource, 0)
for _, res := range *remoteResources {
// Ignore all resources other than aws_api_gateway_base_path_mapping and aws_apigatewayv2_api_mapping
if res.ResourceType() != aws.AwsApiGatewayBasePathMappingResourceType &&
res.ResourceType() != aws.AwsApiGatewayV2MappingResourceType {
newRemoteResources = append(newRemoteResources, res)
continue
}
// Find a matching state resources
existInState := false
for _, stateResource := range *resourcesFromState {
if res.Equal(stateResource) {
existInState = true
break
}
}
// Keep track of the resource if it's managed in IaC
if existInState {
managedApiMapping = append(managedApiMapping, res)
continue
}
// If we're here, it means that we are left with unmanaged path mappings
// in both v1 and v2 format. Let's group real and duplicate path mappings
// in a slice
unmanagedApiMapping = append(unmanagedApiMapping, res)
}
// We only want to show to our end users unmanaged v1 path mappings
// To do that, we're going to loop over unmanaged path mappings to delete duplicates
// and leave after that only v1 path mappings (e.g. remove v2 ones)
deduplicatedUnmanagedMappings := make([]*resource.Resource, 0, len(unmanagedApiMapping))
for _, unmanaged := range unmanagedApiMapping {
// Remove duplicates (e.g. same id, the opposite type)
isDuplicate := false
for _, managed := range managedApiMapping {
if managed.ResourceId() == unmanaged.ResourceId() {
isDuplicate = true
break
}
}
if isDuplicate {
continue
}
// Now keep only v1 path mappings
if unmanaged.ResourceType() == aws.AwsApiGatewayBasePathMappingResourceType {
deduplicatedUnmanagedMappings = append(deduplicatedUnmanagedMappings, unmanaged)
}
}
// Finally, add both managed and unmanaged resources to remote resources
newRemoteResources = append(newRemoteResources, managedApiMapping...)
newRemoteResources = append(newRemoteResources, deduplicatedUnmanagedMappings...)
*remoteResources = newRemoteResources
return nil
}