88 lines
2.5 KiB
Go
88 lines
2.5 KiB
Go
package aws
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import (
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remoteerror "github.com/cloudskiff/driftctl/pkg/remote/error"
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"github.com/cloudskiff/driftctl/pkg/remote/deserializer"
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"github.com/cloudskiff/driftctl/pkg/resource"
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resourceaws "github.com/cloudskiff/driftctl/pkg/resource/aws"
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awsdeserializer "github.com/cloudskiff/driftctl/pkg/resource/aws/deserializer"
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"github.com/cloudskiff/driftctl/pkg/terraform"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/service/ec2"
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"github.com/aws/aws-sdk-go/service/ec2/ec2iface"
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"github.com/sirupsen/logrus"
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"github.com/zclconf/go-cty/cty"
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)
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type EC2InstanceSupplier struct {
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reader terraform.ResourceReader
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deserializer deserializer.CTYDeserializer
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client ec2iface.EC2API
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runner *terraform.ParallelResourceReader
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}
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func NewEC2InstanceSupplier(provider *AWSTerraformProvider) *EC2InstanceSupplier {
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return &EC2InstanceSupplier{
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provider,
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awsdeserializer.NewEC2InstanceDeserializer(),
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ec2.New(provider.session),
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terraform.NewParallelResourceReader(provider.Runner().SubRunner()),
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}
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}
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func (s EC2InstanceSupplier) Resources() ([]resource.Resource, error) {
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instances, err := listInstances(s.client)
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if err != nil {
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return nil, remoteerror.NewResourceEnumerationError(err, resourceaws.AwsInstanceResourceType)
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}
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results := make([]cty.Value, 0)
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if len(instances) > 0 {
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for _, instance := range instances {
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id := aws.StringValue(instance.InstanceId)
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s.runner.Run(func() (cty.Value, error) {
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return s.readInstance(id)
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})
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}
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results, err = s.runner.Wait()
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if err != nil {
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return nil, err
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}
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}
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return s.deserializer.Deserialize(results)
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}
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func (s EC2InstanceSupplier) readInstance(id string) (cty.Value, error) {
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resInstance, err := s.reader.ReadResource(terraform.ReadResourceArgs{
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Ty: resourceaws.AwsInstanceResourceType,
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ID: id,
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})
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if err != nil {
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logrus.Warnf("Error reading instance %s: %+v", id, err)
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return cty.NilVal, err
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}
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if resInstance.IsNull() {
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logrus.WithFields(logrus.Fields{
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"id": id,
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}).Debug("Instance read returned nil (instance may be terminated), ignoring ...")
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}
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return *resInstance, nil
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}
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func listInstances(client ec2iface.EC2API) ([]*ec2.Instance, error) {
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var instances []*ec2.Instance
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input := &ec2.DescribeInstancesInput{}
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err := client.DescribeInstancesPages(input, func(res *ec2.DescribeInstancesOutput, lastPage bool) bool {
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for _, reservation := range res.Reservations {
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instances = append(instances, reservation.Instances...)
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}
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return !lastPage
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})
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if err != nil {
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return nil, err
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}
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return instances, nil
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}
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