driftctl/pkg/remote/aws/ec2_ebs_snapshot_supplier.go

85 lines
2.4 KiB
Go

package aws
import (
remoteerror "github.com/cloudskiff/driftctl/pkg/remote/error"
"github.com/cloudskiff/driftctl/pkg/remote/deserializer"
"github.com/cloudskiff/driftctl/pkg/resource"
resourceaws "github.com/cloudskiff/driftctl/pkg/resource/aws"
awsdeserializer "github.com/cloudskiff/driftctl/pkg/resource/aws/deserializer"
"github.com/cloudskiff/driftctl/pkg/terraform"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/ec2"
"github.com/aws/aws-sdk-go/service/ec2/ec2iface"
"github.com/sirupsen/logrus"
"github.com/zclconf/go-cty/cty"
)
type EC2EbsSnapshotSupplier struct {
reader terraform.ResourceReader
deserializer deserializer.CTYDeserializer
client ec2iface.EC2API
runner *terraform.ParallelResourceReader
}
func NewEC2EbsSnapshotSupplier(provider *TerraformProvider) *EC2EbsSnapshotSupplier {
return &EC2EbsSnapshotSupplier{
provider,
awsdeserializer.NewEC2EbsSnapshotDeserializer(),
ec2.New(provider.session),
terraform.NewParallelResourceReader(provider.Runner().SubRunner()),
}
}
func (s EC2EbsSnapshotSupplier) Resources() ([]resource.Resource, error) {
snapshots, err := listSnapshots(s.client)
if err != nil {
return nil, remoteerror.NewResourceEnumerationError(err, resourceaws.AwsEbsSnapshotResourceType)
}
results := make([]cty.Value, 0)
if len(snapshots) > 0 {
for _, snapshot := range snapshots {
snap := *snapshot
s.runner.Run(func() (cty.Value, error) {
return s.readEbsSnapshot(snap)
})
}
results, err = s.runner.Wait()
if err != nil {
return nil, err
}
}
return s.deserializer.Deserialize(results)
}
func (s EC2EbsSnapshotSupplier) readEbsSnapshot(snapshot ec2.Snapshot) (cty.Value, error) {
id := aws.StringValue(snapshot.SnapshotId)
resSnapshot, err := s.reader.ReadResource(terraform.ReadResourceArgs{
Ty: resourceaws.AwsEbsSnapshotResourceType,
ID: id,
})
if err != nil {
logrus.Warnf("Error reading snapshot %s[%s]: %+v", id, resourceaws.AwsEbsSnapshotResourceType, err)
return cty.NilVal, err
}
return *resSnapshot, nil
}
func listSnapshots(client ec2iface.EC2API) ([]*ec2.Snapshot, error) {
var snapshots []*ec2.Snapshot
input := &ec2.DescribeSnapshotsInput{
OwnerIds: []*string{
aws.String("self"),
},
}
err := client.DescribeSnapshotsPages(input, func(res *ec2.DescribeSnapshotsOutput, lastPage bool) bool {
snapshots = append(snapshots, res.Snapshots...)
return !lastPage
})
if err != nil {
return nil, err
}
return snapshots, err
}