/
vpccidrblock.go
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/
vpccidrblock.go
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/*
Copyright 2016 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"
"github.com/aws/aws-sdk-go/service/ec2"
"k8s.io/kops/upup/pkg/fi"
"k8s.io/kops/upup/pkg/fi/cloudup/awsup"
"k8s.io/kops/upup/pkg/fi/cloudup/cloudformation"
"k8s.io/kops/upup/pkg/fi/cloudup/terraform"
)
//go:generate fitask -type=VPCCIDRBlock
type VPCCIDRBlock struct {
Name *string
Lifecycle *fi.Lifecycle
VPC *VPC
CIDRBlock *string
// Shared is set if this is a shared VPC
Shared *bool
}
func (e *VPCCIDRBlock) Find(c *fi.Context) (*VPCCIDRBlock, error) {
cloud := c.Cloud.(awsup.AWSCloud)
vpcID := e.VPC.ID
vpc, err := cloud.DescribeVPC(*vpcID)
if err != nil {
return nil, err
}
actual := &VPCCIDRBlock{
CIDRBlock: e.CIDRBlock,
}
actual.VPC = &VPC{ID: vpc.VpcId}
// Prevent spurious changes
actual.Shared = e.Shared
actual.Name = e.Name
actual.Lifecycle = e.Lifecycle
return actual, nil
}
func (e *VPCCIDRBlock) Run(c *fi.Context) error {
return fi.DefaultDeltaRunMethod(e, c)
}
func (s *VPCCIDRBlock) CheckChanges(a, e, changes *VPCCIDRBlock) error {
if e.VPC == nil {
return fi.RequiredField("VPC")
}
if e.CIDRBlock == nil {
return fi.RequiredField("CIDRBlock")
}
if a != nil && changes != nil {
if changes.VPC != nil {
return fi.CannotChangeField("VPC")
}
if changes.CIDRBlock != nil {
return fi.CannotChangeField("CIDRBlock")
}
}
return nil
}
func (_ *VPCCIDRBlock) RenderAWS(t *awsup.AWSAPITarget, a, e, changes *VPCCIDRBlock) error {
shared := fi.BoolValue(e.Shared)
if shared {
// Verify the CIDR block was found.
if a == nil {
return fmt.Errorf("CIDR block %q not found", fi.StringValue(e.CIDRBlock))
}
}
if changes.CIDRBlock != nil {
request := &ec2.AssociateVpcCidrBlockInput{
VpcId: e.VPC.ID,
CidrBlock: e.CIDRBlock,
}
_, err := t.Cloud.EC2().AssociateVpcCidrBlock(request)
if err != nil {
return fmt.Errorf("error associating AdditionalCIDR to VPC: %v", err)
}
}
return nil // no tags
}
// type terraformVPCCIDRBlock struct {
// VPCID *terraform.Literal `json:"vpc_id"`
// CIDRBlock *string `json:"ipv4_cidr_block"`
// }
func (_ *VPCCIDRBlock) RenderTerraform(t *terraform.TerraformTarget, a, e, changes *VPCCIDRBlock) error {
// https://github.com/terraform-providers/terraform-provider-aws/issues/3403
return fmt.Errorf("terraform does not support AdditionalCIDRs on VPCs")
// The code below is based on https://github.com/terraform-providers/terraform-provider-aws/pull/1568
// and can be un-commented once it is landed.
// When this has been enabled please fix test TestAdditionalCIDR in integration_test.go to run runTestAWS.
// tf := &terraformVPCCIDRBlock{
// VPCID: e.VPC.TerraformLink(),
// CIDRBlock: e.CIDRBlock,
// }
// return t.RenderResource("aws_vpc_associate_cidr_block", *e.Name, tf)
}
type cloudformationVPCCIDRBlock struct {
VPCID *cloudformation.Literal `json:"VpcId"`
CIDRBlock *string `json:"CidrBlock"`
}
func (_ *VPCCIDRBlock) RenderCloudformation(t *cloudformation.CloudformationTarget, a, e, changes *VPCCIDRBlock) error {
cf := &cloudformationVPCCIDRBlock{
VPCID: e.VPC.CloudformationLink(),
CIDRBlock: e.CIDRBlock,
}
return t.RenderResource("AWS::EC2::VPCCidrBlock", *e.Name, cf)
}