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infrastructure.go
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/
infrastructure.go
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// Copyright (c) 2018 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 alicloudbotanist
import (
"github.com/gardener/gardener/pkg/operation/common"
)
// DeployInfrastructure kicks off a Terraform job which deploys the infrastructure.
func (b *AlicloudBotanist) DeployInfrastructure() error {
var (
err error
createVPC = true
vpcID = "${alicloud_vpc.vpc.id}"
natGatewayID = "${alicloud_nat_gateway.nat_gateway.id}"
snatTableID = "${alicloud_nat_gateway.nat_gateway.snat_table_ids}"
vpcCIDR string
)
// check if we should use an existing VPC or create a new one
if b.Shoot.Info.Spec.Cloud.Alicloud.Networks.VPC.ID != nil {
createVPC = false
vpcID = *b.Shoot.Info.Spec.Cloud.Alicloud.Networks.VPC.ID
if vpcCIDR, err = b.AlicloudClient.GetCIDR(vpcID); err != nil {
return err
}
if natGatewayID, snatTableID, err = b.AlicloudClient.GetNatGatewayInfo(vpcID); err != nil {
return err
}
} else {
vpcCIDR = string(*b.Shoot.Info.Spec.Cloud.Alicloud.Networks.VPC.CIDR)
}
tf, err := b.NewShootTerraformer(common.TerraformerPurposeInfra)
if err != nil {
return err
}
return tf.SetVariablesEnvironment(b.generateTerraformInfraVariablesEnvironment()).
InitializeWith(b.ChartInitializer("alicloud-infra", b.generateTerraformInfraConfig(createVPC, vpcID, natGatewayID, snatTableID, vpcCIDR))).
Apply()
}
// DestroyInfrastructure kicks off a Terraform job which destroys the infrastructure.
func (b *AlicloudBotanist) DestroyInfrastructure() error {
tf, err := b.NewShootTerraformer(common.TerraformerPurposeInfra)
if err != nil {
return err
}
return tf.SetVariablesEnvironment(b.generateTerraformInfraVariablesEnvironment()).
Destroy()
}
// DeployBackupInfrastructure kicks off a Terraform job which deploys the infrastructure resources for backup.
// It sets up the User and the Bucket to store the backups. Allocate permission to the User to access the bucket.
func (b *AlicloudBotanist) DeployBackupInfrastructure() error {
tf, err := b.NewBackupInfrastructureTerraformer()
if err != nil {
return err
}
return tf.
SetVariablesEnvironment(b.generateTerraformBackupVariablesEnvironment()).
InitializeWith(b.ChartInitializer("alicloud-backup", b.generateTerraformBackupConfig())).
Apply()
}
// DestroyBackupInfrastructure kicks off a Terraform job which destroys the infrastructure for etcd backup.
func (b *AlicloudBotanist) DestroyBackupInfrastructure() error {
tf, err := b.NewBackupInfrastructureTerraformer()
if err != nil {
return err
}
return tf.
SetVariablesEnvironment(b.generateTerraformBackupVariablesEnvironment()).
Destroy()
}
// generateTerraformInfraVariablesEnvironment generates the environment containing the credentials which
// are required to validate/apply/destroy the Terraform configuration. These environment must contain
// Terraform variables which are prefixed with TF_VAR_.
func (b *AlicloudBotanist) generateTerraformInfraVariablesEnvironment() map[string]string {
return common.GenerateTerraformVariablesEnvironment(b.Shoot.Secret, map[string]string{
"ACCESS_KEY_ID": AccessKeyID,
"ACCESS_KEY_SECRET": AccessKeySecret,
})
}
// generateTerraformInfraConfig creates the Terraform variables and the Terraform config (for the infrastructure)
// and returns them (these values will be stored as a ConfigMap and a Secret in the Garden cluster.
func (b *AlicloudBotanist) generateTerraformInfraConfig(createVPC bool, vpcID, natGatewayID, snatTableID, vpcCIDR string) map[string]interface{} {
var (
sshSecret = b.Secrets["ssh-keypair"]
zones = []map[string]interface{}{}
)
for idx, zone := range b.Shoot.Info.Spec.Cloud.Alicloud.Zones {
zones = append(zones, map[string]interface{}{
"name": zone,
"cidr": map[string]interface{}{
"worker": b.Shoot.Info.Spec.Cloud.Alicloud.Networks.Workers[idx],
},
})
}
return map[string]interface{}{
"alicloud": map[string]interface{}{
"region": b.Shoot.Info.Spec.Cloud.Region,
},
"create": map[string]interface{}{
"vpc": createVPC,
},
"vpc": map[string]interface{}{
"cidr": vpcCIDR,
"id": vpcID,
"natGatewayID": natGatewayID,
"snatTableID": snatTableID,
},
"clusterName": b.Shoot.SeedNamespace,
"sshPublicKey": string(sshSecret.Data["id_rsa.pub"]),
"zones": zones,
}
}
func (b *AlicloudBotanist) generateTerraformBackupVariablesEnvironment() map[string]string {
return common.GenerateTerraformVariablesEnvironment(b.Seed.Secret, map[string]string{
"ACCESS_KEY_ID": AccessKeyID,
"ACCESS_KEY_SECRET": AccessKeySecret,
})
}
func (b *AlicloudBotanist) generateTerraformBackupConfig() map[string]interface{} {
return map[string]interface{}{
"alicloud": map[string]interface{}{
"region": b.Seed.Info.Spec.Cloud.Region,
},
"bucket": map[string]interface{}{
"name": b.Operation.BackupInfrastructure.Name,
},
"clusterName": b.Operation.BackupInfrastructure.Name,
}
}