driftctl/pkg/remote/aws/iam_policy_supplier.go

85 lines
2.3 KiB
Go

package aws
import (
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/iam"
"github.com/aws/aws-sdk-go/service/iam/iamiface"
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/sirupsen/logrus"
"github.com/zclconf/go-cty/cty"
)
type IamPolicySupplier struct {
reader terraform.ResourceReader
deserializer deserializer.CTYDeserializer
client iamiface.IAMAPI
runner *terraform.ParallelResourceReader
}
func NewIamPolicySupplier(provider *AWSTerraformProvider) *IamPolicySupplier {
return &IamPolicySupplier{
provider,
awsdeserializer.NewIamPolicyDeserializer(),
iam.New(provider.session),
terraform.NewParallelResourceReader(provider.Runner().SubRunner()),
}
}
func (s IamPolicySupplier) Resources() ([]resource.Resource, error) {
policies, err := listIamPolicies(s.client)
if err != nil {
return nil, remoteerror.NewResourceEnumerationError(err, resourceaws.AwsIamPolicyResourceType)
}
results := make([]cty.Value, 0)
if len(policies) > 0 {
for _, policy := range policies {
u := *policy
s.runner.Run(func() (cty.Value, error) {
return s.readRes(&u)
})
}
results, err = s.runner.Wait()
if err != nil {
return nil, err
}
}
return s.deserializer.Deserialize(results)
}
func (s IamPolicySupplier) readRes(resource *iam.Policy) (cty.Value, error) {
res, err := s.reader.ReadResource(
terraform.ReadResourceArgs{
Ty: resourceaws.AwsIamPolicyResourceType,
ID: *resource.Arn,
},
)
if err != nil {
logrus.Warnf("Error reading iam policy %s[%s]: %+v", *resource.Arn, resourceaws.AwsIamPolicyResourceType, err)
return cty.NilVal, err
}
return *res, nil
}
func listIamPolicies(client iamiface.IAMAPI) ([]*iam.Policy, error) {
var resources []*iam.Policy
input := &iam.ListPoliciesInput{
Scope: aws.String(iam.PolicyScopeTypeLocal),
}
err := client.ListPoliciesPages(input, func(res *iam.ListPoliciesOutput, lastPage bool) bool {
resources = append(resources, res.Policies...)
return !lastPage
})
if err != nil {
return nil, err
}
return resources, nil
}