forked from cloudfoundry/bosh-bootloader
/
ops_generator.go
227 lines (194 loc) · 5.43 KB
/
ops_generator.go
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package gcp
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 az struct {
Name string `yaml:"name"`
CloudProperties azCloudProperties `yaml:"cloud_properties"`
}
type azCloudProperties struct {
AvailabilityZone string `yaml:"zone"`
}
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 {
EphemeralExternalIP bool `yaml:"ephemeral_external_ip"`
NetworkName string `yaml:"network_name"`
SubnetworkName string `yaml:"subnetwork_name"`
Tags []string
}
type lb struct {
Name string
CloudProperties lbCloudProperties `yaml:"cloud_properties"`
}
type lbCloudProperties struct {
BackendService string `yaml:"backend_service,omitempty"`
TargetPool string `yaml:"target_pool,omitempty"`
Tags []string `yaml:",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) {
ops, err := o.generateGCPOps(state)
if err != nil {
return "", err
}
cloudConfigOpsYAML, err := marshal(ops)
if err != nil {
return "", err
}
return strings.Join(
[]string{
BaseOps,
string(cloudConfigOpsYAML),
},
"\n",
), nil
}
func createOp(opType, opPath string, value interface{}) op {
return op{
Type: opType,
Path: opPath,
Value: value,
}
}
func (o *OpsGenerator) generateGCPOps(state storage.State) ([]op, error) {
terraformOutputs, err := o.terraformManager.GetOutputs(state)
if err != nil {
return []op{}, err
}
var ops []op
for i, zone := range state.GCP.Zones {
ops = append(ops, createOp("replace", "/azs/-", az{
Name: fmt.Sprintf("z%d", i+1),
CloudProperties: azCloudProperties{
AvailabilityZone: zone,
},
}))
}
var subnets []networkSubnet
for i, _ := range state.GCP.Zones {
cidr := fmt.Sprintf("10.0.%d.0/20", 16*(i+1))
subnet, err := generateNetworkSubnet(
fmt.Sprintf("z%d", i+1),
cidr,
terraformOutputs["network_name"].(string),
terraformOutputs["subnetwork_name"].(string),
terraformOutputs["internal_tag_name"].(string),
)
if err != nil {
return []op{}, err
}
subnets = append(subnets, subnet)
}
ops = append(ops, createOp("replace", "/networks/-", network{
Name: "private",
Subnets: subnets,
Type: "manual",
}))
ops = append(ops, createOp("replace", "/networks/-", network{
Name: "default",
Subnets: subnets,
Type: "manual",
}))
if state.LB.Type == "concourse" {
ops = append(ops, createOp("replace", "/vm_extensions/-", lb{
Name: "lb",
CloudProperties: lbCloudProperties{
TargetPool: terraformOutputs["concourse_target_pool"].(string),
},
}))
}
if state.LB.Type == "cf" {
ops = append(ops, createOp("replace", "/vm_extensions/-", lb{
Name: "cf-router-network-properties",
CloudProperties: lbCloudProperties{
BackendService: terraformOutputs["router_backend_service"].(string),
TargetPool: terraformOutputs["ws_target_pool"].(string),
Tags: []string{
terraformOutputs["router_backend_service"].(string),
terraformOutputs["ws_target_pool"].(string),
},
},
}))
ops = append(ops, createOp("replace", "/vm_extensions/-", lb{
Name: "diego-ssh-proxy-network-properties",
CloudProperties: lbCloudProperties{
TargetPool: terraformOutputs["ssh_proxy_target_pool"].(string),
Tags: []string{
terraformOutputs["ssh_proxy_target_pool"].(string),
},
},
}))
ops = append(ops, createOp("replace", "/vm_extensions/-", lb{
Name: "cf-tcp-router-network-properties",
CloudProperties: lbCloudProperties{
TargetPool: terraformOutputs["tcp_router_target_pool"].(string),
Tags: []string{
terraformOutputs["tcp_router_target_pool"].(string),
},
},
}))
}
return ops, nil
}
func generateNetworkSubnet(az, cidr, networkName, subnetworkName, internalTag 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{
EphemeralExternalIP: true,
NetworkName: networkName,
SubnetworkName: subnetworkName,
Tags: []string{internalTag},
},
}, nil
}