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iamrolepolicy.go
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/
iamrolepolicy.go
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package awstasks
import (
"fmt"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/service/iam"
"github.com/golang/glog"
"k8s.io/kops/upup/pkg/fi"
"k8s.io/kops/upup/pkg/fi/cloudup/awsup"
"k8s.io/kops/upup/pkg/fi/cloudup/terraform"
"k8s.io/kubernetes/pkg/util/diff"
"net/url"
)
//go:generate fitask -type=IAMRolePolicy
type IAMRolePolicy struct {
ID *string
Name *string
Role *IAMRole
PolicyDocument *fi.ResourceHolder
}
func (e *IAMRolePolicy) Find(c *fi.Context) (*IAMRolePolicy, error) {
cloud := c.Cloud.(awsup.AWSCloud)
request := &iam.GetRolePolicyInput{
RoleName: e.Role.Name,
PolicyName: e.Name,
}
response, err := cloud.IAM().GetRolePolicy(request)
if awsErr, ok := err.(awserr.Error); ok {
if awsErr.Code() == "NoSuchEntity" {
return nil, nil
}
}
if err != nil {
return nil, fmt.Errorf("error getting role: %v", err)
}
p := response
actual := &IAMRolePolicy{}
actual.Role = &IAMRole{Name: p.RoleName}
if aws.StringValue(e.Role.Name) == aws.StringValue(p.RoleName) {
actual.Role.ID = e.Role.ID
}
if p.PolicyDocument != nil {
// The PolicyDocument is URI encoded (?)
policy := *p.PolicyDocument
policy, err = url.QueryUnescape(policy)
if err != nil {
return nil, fmt.Errorf("error parsing PolicyDocument for IAMRolePolicy %q: %v", e.Name, err)
}
actual.PolicyDocument = fi.WrapResource(fi.NewStringResource(policy))
}
actual.Name = p.PolicyName
e.ID = actual.ID
return actual, nil
}
func (e *IAMRolePolicy) Run(c *fi.Context) error {
return fi.DefaultDeltaRunMethod(e, c)
}
func (s *IAMRolePolicy) CheckChanges(a, e, changes *IAMRolePolicy) error {
if a != nil {
if e.Name == nil {
return fi.RequiredField("Name")
}
}
return nil
}
func (_ *IAMRolePolicy) RenderAWS(t *awsup.AWSAPITarget, a, e, changes *IAMRolePolicy) error {
policy, err := e.PolicyDocument.AsString()
if err != nil {
return fmt.Errorf("error rendering PolicyDocument: %v", err)
}
doPut := false
if a == nil {
glog.V(2).Infof("Creating IAMRolePolicy")
doPut = true
} else if changes != nil {
if changes.PolicyDocument != nil {
glog.V(2).Infof("Applying changed role policy to %q:", *e.Name)
var err error
actualPolicy := ""
if a.PolicyDocument != nil {
actualPolicy, err = a.PolicyDocument.AsString()
if err != nil {
return fmt.Errorf("error reading actual policy document: %v", err)
}
}
if actualPolicy == policy {
glog.Warning("Policies were actually the same")
} else {
d := diff.StringDiff(actualPolicy, policy)
glog.V(2).Infof("diff: %s", d)
}
doPut = true
}
}
if doPut {
request := &iam.PutRolePolicyInput{}
request.PolicyDocument = aws.String(policy)
request.RoleName = e.Name
request.PolicyName = e.Name
_, err = t.Cloud.IAM().PutRolePolicy(request)
if err != nil {
return fmt.Errorf("error creating/updating IAMRolePolicy: %v", err)
}
}
// TODO: Should we use path as our tag?
return nil // No tags in IAM
}
type terraformIAMRolePolicy struct {
Name *string `json:"name"`
Role *terraform.Literal `json:"role"`
PolicyDocument *terraform.Literal `json:"policy"`
}
func (_ *IAMRolePolicy) RenderTerraform(t *terraform.TerraformTarget, a, e, changes *IAMRolePolicy) error {
policy, err := t.AddFile("aws_iam_role_policy", *e.Name, "policy", e.PolicyDocument)
if err != nil {
return fmt.Errorf("error rendering PolicyDocument: %v", err)
}
tf := &terraformIAMRolePolicy{
Name: e.Name,
Role: e.Role.TerraformLink(),
PolicyDocument: policy,
}
return t.RenderResource("aws_iam_role_policy", *e.Name, tf)
}
func (e *IAMRolePolicy) TerraformLink() *terraform.Literal {
return terraform.LiteralSelfLink("aws_iam_role_policy", *e.Name)
}