driftctl/pkg/remote/aws/nat_gateway_supplier.go

92 lines
2.4 KiB
Go

package aws
import (
"github.com/aws/aws-sdk-go/service/ec2"
"github.com/aws/aws-sdk-go/service/ec2/ec2iface"
"github.com/cloudskiff/driftctl/pkg/remote/deserializer"
remoteerror "github.com/cloudskiff/driftctl/pkg/remote/error"
"github.com/cloudskiff/driftctl/pkg/resource"
"github.com/cloudskiff/driftctl/pkg/resource/aws"
awsdeserializer "github.com/cloudskiff/driftctl/pkg/resource/aws/deserializer"
"github.com/cloudskiff/driftctl/pkg/terraform"
"github.com/sirupsen/logrus"
"github.com/zclconf/go-cty/cty"
)
type NatGatewaySupplier struct {
reader terraform.ResourceReader
deserializer deserializer.CTYDeserializer
client ec2iface.EC2API
runner *terraform.ParallelResourceReader
}
func NewNatGatewaySupplier(provider *TerraformProvider) *NatGatewaySupplier {
return &NatGatewaySupplier{
provider,
awsdeserializer.NewNatGatewayDeserializer(),
ec2.New(provider.session),
terraform.NewParallelResourceReader(provider.Runner().SubRunner()),
}
}
func (s NatGatewaySupplier) Resources() ([]resource.Resource, error) {
retrievedNatGateways, err := listNatGateways(s.client)
if err != nil {
return nil, remoteerror.NewResourceEnumerationError(err, aws.AwsNatGatewayResourceType)
}
for _, gateway := range retrievedNatGateways {
res := *gateway
s.runner.Run(func() (cty.Value, error) {
return s.readNatGateway(res)
})
}
// Retrieve results from terraform provider
natGatewayResources, err := s.runner.Wait()
if err != nil {
return nil, err
}
// Deserialize
resources, err := s.deserializer.Deserialize(natGatewayResources)
if err != nil {
return nil, err
}
return resources, nil
}
func (s NatGatewaySupplier) readNatGateway(gateway ec2.NatGateway) (cty.Value, error) {
var Ty resource.ResourceType = aws.AwsNatGatewayResourceType
val, err := s.reader.ReadResource(terraform.ReadResourceArgs{
ID: *gateway.NatGatewayId,
Ty: Ty,
})
if err != nil {
logrus.WithFields(logrus.Fields{
"type": Ty,
}).Error(err)
return cty.NilVal, err
}
return *val, nil
}
func listNatGateways(client ec2iface.EC2API) ([]*ec2.NatGateway, error) {
var result []*ec2.NatGateway
input := ec2.DescribeNatGatewaysInput{}
err := client.DescribeNatGatewaysPages(&input,
func(resp *ec2.DescribeNatGatewaysOutput, lastPage bool) bool {
result = append(result, resp.NatGateways...)
return !lastPage
},
)
if err != nil {
return nil, err
}
return result, nil
}