forked from cloudfoundry/bosh-bootloader
/
ops_generator.go
146 lines (126 loc) · 3.17 KB
/
ops_generator.go
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package azure
import (
"fmt"
"strings"
yaml "gopkg.in/yaml.v2"
"github.com/cloudfoundry/bosh-bootloader/bosh"
"github.com/cloudfoundry/bosh-bootloader/storage"
)
type OpsGenerator struct {
terraformManager terraformManager
}
type terraformManager interface {
GetOutputs(storage.State) (map[string]interface{}, error)
}
type op struct {
Type string
Path string
Value interface{}
}
type network struct {
Name string
Subnets []networkSubnet
Type string
}
type networkSubnet struct {
AZ string
Gateway string
Range string
Reserved []string
Static []string
CloudProperties subnetCloudProperties `yaml:"cloud_properties"`
}
type subnetCloudProperties struct {
VirtualNetworkName string `yaml:"virtual_network_name"`
SubnetName string `yaml:"subnet_name"`
SecurityGroup string `yaml:"security_group,omitempty"`
}
var marshal func(interface{}) ([]byte, error) = yaml.Marshal
func NewOpsGenerator(terraformManager terraformManager) OpsGenerator {
return OpsGenerator{
terraformManager: terraformManager,
}
}
func (o OpsGenerator) Generate(state storage.State) (string, error) {
terraformOutputs, err := o.terraformManager.GetOutputs(state)
if err != nil {
return "", err
}
zones := []string{"z1", "z2", "z3"}
var subnets []networkSubnet
for i, _ := range zones {
cidr := fmt.Sprintf("10.0.%d.0/20", 16*(i+1))
subnet, err := generateNetworkSubnet(
fmt.Sprintf("z%d", i+1),
cidr,
terraformOutputs["bosh_network_name"].(string),
terraformOutputs["bosh_subnet_name"].(string),
terraformOutputs["bosh_default_security_group"].(string),
)
if err != nil {
panic(err)
return "", err
}
subnets = append(subnets, subnet)
}
cloudConfigOps := []op{
{
Type: "replace",
Path: "/networks/-",
Value: network{
Name: "default",
Subnets: subnets,
Type: "manual",
},
},
{
Type: "replace",
Path: "/networks/-",
Value: network{
Name: "private",
Subnets: subnets,
Type: "manual",
},
},
}
cloudConfigOpsYAML, err := marshal(cloudConfigOps)
if err != nil {
return "", err
}
return strings.Join(
[]string{
BaseOps,
string(cloudConfigOpsYAML),
},
"\n",
), nil
}
func generateNetworkSubnet(az, cidr, networkName, subnetName, securityGroup string) (networkSubnet, error) {
parsedCidr, err := bosh.ParseCIDRBlock(cidr)
if err != nil {
return networkSubnet{}, err
}
gateway := parsedCidr.GetFirstIP().Add(1).String()
firstReserved := parsedCidr.GetFirstIP().Add(2).String()
secondReserved := parsedCidr.GetFirstIP().Add(3).String()
lastReserved := parsedCidr.GetLastIP().String()
lastStatic := parsedCidr.GetLastIP().Subtract(1).String()
firstStatic := parsedCidr.GetLastIP().Subtract(65).String()
return networkSubnet{
AZ: az,
Gateway: gateway,
Range: cidr,
Reserved: []string{
fmt.Sprintf("%s-%s", firstReserved, secondReserved),
fmt.Sprintf("%s", lastReserved),
},
Static: []string{
fmt.Sprintf("%s-%s", firstStatic, lastStatic),
},
CloudProperties: subnetCloudProperties{
VirtualNetworkName: networkName,
SubnetName: subnetName,
SecurityGroup: securityGroup,
},
}, nil
}