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manager.go
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manager.go
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package cloudconfig
import (
"bytes"
"fmt"
"io"
"path/filepath"
"github.com/cloudfoundry/bosh-bootloader/bosh"
"github.com/cloudfoundry/bosh-bootloader/fileio"
"github.com/cloudfoundry/bosh-bootloader/storage"
"github.com/cloudfoundry/bosh-bootloader/terraform"
)
type fs interface {
fileio.FileWriter
fileio.DirReader
fileio.Stater
}
type Manager struct {
logger logger
command command
stateStore stateStore
opsGenerator OpsGenerator
boshClientProvider boshClientProvider
terraformManager terraformManager
fs fs
}
type logger interface {
Step(string, ...interface{})
}
type command interface {
Run(stdout io.Writer, cloudConfigDirectory string, args []string) error
}
type OpsGenerator interface {
Generate(state storage.State) (string, error)
GenerateVars(state storage.State) (string, error)
}
type boshClientProvider interface {
Client(jumpbox storage.Jumpbox, directorAddress, directorUsername, directorPassword, caCert string) (bosh.Client, error)
}
type terraformManager interface {
GetOutputs() (terraform.Outputs, error)
}
type stateStore interface {
GetCloudConfigDir() (string, error)
GetVarsDir() (string, error)
}
func NewManager(logger logger, cmd command, stateStore stateStore, opsGenerator OpsGenerator, boshClientProvider boshClientProvider,
terraformManager terraformManager, fs fs) Manager {
return Manager{
logger: logger,
command: cmd,
stateStore: stateStore,
opsGenerator: opsGenerator,
boshClientProvider: boshClientProvider,
terraformManager: terraformManager,
fs: fs,
}
}
func (m Manager) Initialize(state storage.State) error {
cloudConfigDir, err := m.stateStore.GetCloudConfigDir()
if err != nil {
return err
}
err = m.fs.WriteFile(filepath.Join(cloudConfigDir, "cloud-config.yml"), []byte(BaseCloudConfig), storage.StateMode)
if err != nil {
return err
}
ops, err := m.opsGenerator.Generate(state)
if err != nil {
return err
}
err = m.fs.WriteFile(filepath.Join(cloudConfigDir, "ops.yml"), []byte(ops), storage.StateMode)
if err != nil {
return err
}
return nil
}
func (m Manager) GenerateVars(state storage.State) error {
varsDir, err := m.stateStore.GetVarsDir()
if err != nil {
return err
}
vars, err := m.opsGenerator.GenerateVars(state)
if err != nil {
return fmt.Errorf("Generate cloud config vars: %s", err)
}
err = m.fs.WriteFile(filepath.Join(varsDir, "cloud-config-vars.yml"), []byte(vars), storage.StateMode)
if err != nil {
return fmt.Errorf("Write cloud config vars: %s", err)
}
return nil
}
func (m Manager) IsPresentCloudConfig() bool {
cloudConfigDir, err := m.stateStore.GetCloudConfigDir()
if err != nil {
return false
}
_, err1 := m.fs.Stat(filepath.Join(cloudConfigDir, "cloud-config.yml"))
_, err2 := m.fs.Stat(filepath.Join(cloudConfigDir, "ops.yml"))
if err1 != nil || err2 != nil {
return false
}
return true
}
func (m Manager) IsPresentCloudConfigVars() bool {
varsDir, err := m.stateStore.GetVarsDir()
if err != nil {
return false
}
_, err = m.fs.Stat(filepath.Join(varsDir, "cloud-config-vars.yml"))
if err != nil {
return false
}
return true
}
func (m Manager) Interpolate() (string, error) {
cloudConfigDir, err := m.stateStore.GetCloudConfigDir()
if err != nil {
return "", err
}
varsDir, err := m.stateStore.GetVarsDir()
if err != nil {
return "", err
}
args := []string{
"interpolate", filepath.Join(cloudConfigDir, "cloud-config.yml"),
"--vars-file", filepath.Join(varsDir, "cloud-config-vars.yml"),
"-o", filepath.Join(cloudConfigDir, "ops.yml"),
}
files, err := m.fs.ReadDir(cloudConfigDir)
if err != nil {
return "", fmt.Errorf("Read cloud config dir: %s", err)
}
for _, file := range files {
name := file.Name()
if name != "cloud-config.yml" && name != "ops.yml" {
args = append(args, "-o", filepath.Join(cloudConfigDir, name))
}
}
buf := bytes.NewBuffer([]byte{})
err = m.command.Run(buf, cloudConfigDir, args)
if err != nil {
return "", err
}
return buf.String(), nil
}
func (m Manager) Update(state storage.State) error {
boshClient, err := m.boshClientProvider.Client(state.Jumpbox, state.BOSH.DirectorAddress, state.BOSH.DirectorUsername, state.BOSH.DirectorPassword, state.BOSH.DirectorSSLCA)
if err != nil {
return err // not tested
}
m.logger.Step("generating cloud config")
err = m.GenerateVars(state)
if err != nil {
return err
}
cloudConfig, err := m.Interpolate()
if err != nil {
return err
}
m.logger.Step("applying cloud config")
err = boshClient.UpdateCloudConfig([]byte(cloudConfig))
if err != nil {
return err
}
return nil
}