kops/upup/pkg/fi/cloudup/awstasks/iamoidcprovider.go

248 lines
7.0 KiB
Go

/*
Copyright 2020 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package awstasks
import (
"fmt"
"strings"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/iam"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/klog/v2"
"k8s.io/kops/upup/pkg/fi"
"k8s.io/kops/upup/pkg/fi/cloudup/awsup"
"k8s.io/kops/upup/pkg/fi/cloudup/terraform"
"k8s.io/kops/upup/pkg/fi/cloudup/terraformWriter"
)
// +kops:fitask
type IAMOIDCProvider struct {
Lifecycle fi.Lifecycle
ClientIDs []*string
Thumbprints []*string
URL *string
Name *string
Tags map[string]string
arn *string
}
var _ fi.CompareWithID = &IAMOIDCProvider{}
func (e *IAMOIDCProvider) CompareWithID() *string {
return e.Name
}
func (e *IAMOIDCProvider) Find(c *fi.CloudupContext) (*IAMOIDCProvider, error) {
cloud := c.T.Cloud.(awsup.AWSCloud)
response, err := cloud.IAM().ListOpenIDConnectProviders(&iam.ListOpenIDConnectProvidersInput{})
if err != nil {
return nil, fmt.Errorf("error listing oidc providers: %v", err)
}
providers := response.OpenIDConnectProviderList
for _, provider := range providers {
arn := provider.Arn
descResp, err := cloud.IAM().GetOpenIDConnectProvider(&iam.GetOpenIDConnectProviderInput{
OpenIDConnectProviderArn: arn,
})
if err != nil {
return nil, fmt.Errorf("error describing oidc provider: %v", err)
}
// AWS does not return the https:// in the url
actualURL := aws.StringValue(descResp.Url)
if !strings.Contains(actualURL, "://") {
actualURL = "https://" + actualURL
}
if actualURL == fi.ValueOf(e.URL) {
actual := &IAMOIDCProvider{
ClientIDs: descResp.ClientIDList,
Thumbprints: descResp.ThumbprintList,
URL: &actualURL,
Tags: mapIAMTagsToMap(descResp.Tags),
arn: arn,
}
actual.Lifecycle = e.Lifecycle
actual.Name = e.Name
klog.V(2).Infof("found matching IAMOIDCProvider %q", aws.StringValue(arn))
return actual, nil
}
}
return nil, nil
}
func (e *IAMOIDCProvider) Run(c *fi.CloudupContext) error {
return fi.CloudupDefaultDeltaRunMethod(e, c)
}
func (s *IAMOIDCProvider) CheckChanges(a, e, changes *IAMOIDCProvider) error {
if e.URL == nil {
return fi.RequiredField("URL")
}
if e.ClientIDs == nil {
return fi.RequiredField("ClientIDs")
}
if len(e.Thumbprints) == 0 {
return fi.RequiredField("Thumbprints")
}
if a != nil {
if changes.URL != nil {
return fi.CannotChangeField("URL")
}
}
return nil
}
func (p *IAMOIDCProvider) RenderAWS(t *awsup.AWSAPITarget, a, e, changes *IAMOIDCProvider) error {
thumbprints := e.Thumbprints
if a == nil {
klog.V(2).Infof("Creating IAMOIDCProvider with Name:%q", *e.Name)
request := &iam.CreateOpenIDConnectProviderInput{
ClientIDList: e.ClientIDs,
ThumbprintList: thumbprints,
Url: e.URL,
Tags: mapToIAMTags(e.Tags),
}
response, err := t.Cloud.IAM().CreateOpenIDConnectProvider(request)
if err != nil {
return fmt.Errorf("error creating IAMOIDCProvider: %v", err)
}
e.arn = response.OpenIDConnectProviderArn
} else {
if changes.Thumbprints != nil {
klog.V(2).Infof("Updating IAMOIDCProvider Thumbprints %q", fi.ValueOf(e.arn))
request := &iam.UpdateOpenIDConnectProviderThumbprintInput{}
request.OpenIDConnectProviderArn = a.arn
request.ThumbprintList = thumbprints
_, err := t.Cloud.IAM().UpdateOpenIDConnectProviderThumbprint(request)
if err != nil {
return fmt.Errorf("error updating IAMOIDCProvider Thumbprints: %v", err)
}
}
if changes.Tags != nil {
if len(a.Tags) > 0 {
existingTagKeys := make([]*string, 0)
for k := range a.Tags {
existingTagKeys = append(existingTagKeys, &k)
}
untagRequest := &iam.UntagOpenIDConnectProviderInput{
OpenIDConnectProviderArn: a.arn,
TagKeys: existingTagKeys,
}
_, err := t.Cloud.IAM().UntagOpenIDConnectProvider(untagRequest)
if err != nil {
return fmt.Errorf("error untagging IAMOIDCProvider: %v", err)
}
}
if len(e.Tags) > 0 {
tagRequest := &iam.TagOpenIDConnectProviderInput{
OpenIDConnectProviderArn: a.arn,
Tags: mapToIAMTags(e.Tags),
}
_, err := t.Cloud.IAM().TagOpenIDConnectProvider(tagRequest)
if err != nil {
return fmt.Errorf("error tagging IAMOIDCProvider: %v", err)
}
}
}
if changes.ClientIDs != nil {
actual := sets.NewString()
for _, aud := range a.ClientIDs {
actual.Insert(*aud)
}
expected := sets.NewString()
for _, aud := range e.ClientIDs {
expected.Insert(*aud)
}
toRemove := actual.Difference(expected)
for _, elem := range toRemove.List() {
request := &iam.RemoveClientIDFromOpenIDConnectProviderInput{
OpenIDConnectProviderArn: a.arn,
ClientID: &elem,
}
_, err := t.Cloud.IAM().RemoveClientIDFromOpenIDConnectProvider(request)
if err != nil {
return fmt.Errorf("error removing audience %s to IAMOIDCProvider: %v", elem, err)
}
}
toAdd := expected.Difference(actual)
for _, elem := range toAdd.List() {
request := &iam.AddClientIDToOpenIDConnectProviderInput{
OpenIDConnectProviderArn: a.arn,
ClientID: &elem,
}
_, err := t.Cloud.IAM().AddClientIDToOpenIDConnectProvider(request)
if err != nil {
return fmt.Errorf("error adding audience %s to IAMOIDCProvider: %v", elem, err)
}
}
}
}
return nil
}
type terraformIAMOIDCProvider struct {
URL *string `cty:"url"`
ClientIDList []*string `cty:"client_id_list"`
ThumbprintList []*string `cty:"thumbprint_list"`
AssumeRolePolicy *terraformWriter.Literal `cty:"assume_role_policy"`
Tags map[string]string `cty:"tags"`
}
func (p *IAMOIDCProvider) RenderTerraform(t *terraform.TerraformTarget, a, e, changes *IAMOIDCProvider) error {
err := t.AddOutputVariable("iam_openid_connect_provider_arn", e.TerraformLink())
if err != nil {
return err
}
issuerSubs := strings.SplitAfter(aws.StringValue(e.URL), "://")
issuer := issuerSubs[len(issuerSubs)-1]
err = t.AddOutputVariable("iam_openid_connect_provider_issuer", terraformWriter.LiteralFromStringValue(issuer))
if err != nil {
return err
}
tf := &terraformIAMOIDCProvider{
URL: e.URL,
ClientIDList: e.ClientIDs,
ThumbprintList: e.Thumbprints,
Tags: e.Tags,
}
return t.RenderResource("aws_iam_openid_connect_provider", *e.Name, tf)
}
func (e *IAMOIDCProvider) TerraformLink() *terraformWriter.Literal {
return terraformWriter.LiteralProperty("aws_iam_openid_connect_provider", *e.Name, "arn")
}