driftctl/pkg/remote/aws/subnet_supplier.go

116 lines
3.3 KiB
Go

package aws
import (
"github.com/aws/aws-sdk-go/service/ec2"
"github.com/aws/aws-sdk-go/service/ec2/ec2iface"
remoteerror "github.com/cloudskiff/driftctl/pkg/remote/error"
"github.com/cloudskiff/driftctl/pkg/remote/deserializer"
"github.com/cloudskiff/driftctl/pkg/resource/aws"
awsdeserializer "github.com/cloudskiff/driftctl/pkg/resource/aws/deserializer"
"github.com/zclconf/go-cty/cty"
"github.com/cloudskiff/driftctl/pkg/resource"
"github.com/cloudskiff/driftctl/pkg/terraform"
"github.com/sirupsen/logrus"
)
type SubnetSupplier struct {
reader terraform.ResourceReader
defaultSubnetDeserializer deserializer.CTYDeserializer
subnetDeserializer deserializer.CTYDeserializer
client ec2iface.EC2API
defaultSubnetRunner *terraform.ParallelResourceReader
subnetRunner *terraform.ParallelResourceReader
}
func NewSubnetSupplier(provider *AWSTerraformProvider) *SubnetSupplier {
return &SubnetSupplier{
provider,
awsdeserializer.NewDefaultSubnetDeserializer(),
awsdeserializer.NewSubnetDeserializer(),
ec2.New(provider.session),
terraform.NewParallelResourceReader(provider.Runner().SubRunner()),
terraform.NewParallelResourceReader(provider.Runner().SubRunner()),
}
}
func (s SubnetSupplier) Resources() ([]resource.Resource, error) {
input := ec2.DescribeSubnetsInput{}
var subnets []*ec2.Subnet
var defaultSubnets []*ec2.Subnet
err := s.client.DescribeSubnetsPages(&input,
func(resp *ec2.DescribeSubnetsOutput, lastPage bool) bool {
for _, subnet := range resp.Subnets {
if subnet.DefaultForAz != nil && *subnet.DefaultForAz {
defaultSubnets = append(defaultSubnets, subnet)
continue
}
subnets = append(subnets, subnet)
}
return !lastPage
},
)
if err != nil {
return nil, remoteerror.NewResourceEnumerationError(err, aws.AwsSubnetResourceType)
}
for _, item := range subnets {
res := *item
s.subnetRunner.Run(func() (cty.Value, error) {
return s.readSubnet(res)
})
}
for _, item := range defaultSubnets {
res := *item
s.defaultSubnetRunner.Run(func() (cty.Value, error) {
return s.readSubnet(res)
})
}
// Retrieve results from terraform provider
defaultSubnetResources, err := s.defaultSubnetRunner.Wait()
if err != nil {
return nil, err
}
subnetResources, err := s.subnetRunner.Wait()
if err != nil {
return nil, err
}
// Deserialize
deserializedDefaultSubnets, err := s.defaultSubnetDeserializer.Deserialize(defaultSubnetResources)
if err != nil {
return nil, err
}
deserializedSubnets, err := s.subnetDeserializer.Deserialize(subnetResources)
if err != nil {
return nil, err
}
resources := make([]resource.Resource, 0, len(subnetResources)+len(deserializedDefaultSubnets))
resources = append(resources, deserializedDefaultSubnets...)
resources = append(resources, deserializedSubnets...)
return resources, nil
}
func (s SubnetSupplier) readSubnet(subnet ec2.Subnet) (cty.Value, error) {
var Ty resource.ResourceType = aws.AwsSubnetResourceType
if subnet.DefaultForAz != nil && *subnet.DefaultForAz {
Ty = aws.AwsDefaultSubnetResourceType
}
val, err := s.reader.ReadResource(terraform.ReadResourceArgs{
ID: *subnet.SubnetId,
Ty: Ty,
})
if err != nil {
logrus.Error(err)
return cty.NilVal, err
}
return *val, nil
}