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config.go
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config.go
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package app
import (
"io/ioutil"
"net/mail"
"net/url"
"time"
"github.com/go-playground/validator"
"github.com/pkg/errors"
"gopkg.in/yaml.v3"
)
var validate *validator.Validate
func init() {
validate = validator.New()
}
type AcmeConfig struct {
Server url.URL `validate:"required"`
Email mail.Address `validate:"required"`
}
func (c *AcmeConfig) UnmarshalYAML(value *yaml.Node) error {
aux := &struct {
Server string `validate:"required,url"`
Email string `validate:"required,email"`
}{}
if err := value.Decode(aux); err != nil {
return err
}
if err := validate.Struct(aux); err != nil {
return errors.Wrap(err, "AcmeConfig failed validation")
}
parsedUrl, err := url.Parse(aux.Server)
if err != nil {
return errors.Wrap(err, "AcmeConfig has bad server")
}
parsedEmail, err := mail.ParseAddress(aux.Email)
if err != nil {
return errors.Wrap(err, "AcmeConfig has bad email")
}
c.Server = *parsedUrl
c.Email = *parsedEmail
}
type StateConfig struct {
Local *LocalStateConfig
Sql *SqlStateConfig
AzureBlob *AzureBlobStateConfig
AzureKeyVault *AzureKeyVaultStateConfig
}
type LocalStateConfig struct {
Directory string `validate:"required,file"`
}
type SqlStateConfig struct {
Driver string `validate:"required"`
ConnectionString string `validate:"required"`
}
type AzureBlobStateConfig struct {
Url url.URL `validate:"required"`
}
func (c *AzureBlobStateConfig) UnmarshalYAML(value *yaml.Node) error {
aux := &struct {
Url string `validate:"required,url"`
}{}
if err := value.Decode(aux); err != nil {
return err
}
if err := validate.Struct(aux); err != nil {
return errors.Wrap(err, "AzureBlobStateConfig failed validation")
}
parsedUrl, err := url.Parse(aux.Url)
if err != nil {
return errors.Wrap(err, "AzureBlobStateConfig has bad url")
}
c.Url = *parsedUrl
return nil
}
type AzureKeyVaultStateConfig struct {
Url url.URL `validate:"required"`
KeyName string `validate:"required,dns_rfc1035_label"`
EmailSecretName string `validate:"required,dns_rfc1035_label"`
}
func (c *AzureKeyVaultStateConfig) UnmarshalYAML(value *yaml.Node) error {
aux := &struct {
Url string `validate:"required"`
KeyName string `validate:"required,dns_rfc1035_label"`
EmailSecretName string `validate:"required,dns_rfc1035_label"`
}{}
if err := value.Decode(aux); err != nil {
return err
}
if err := validate.Struct(aux); err != nil {
return errors.Wrap(err, "AzureKeyVaultStateConfig failed validation")
}
parsedUrl, err := url.Parse(aux.Url)
if err != nil {
return errors.Wrap(err, "AzureKeyVaultStateConfig has bad url")
}
c.Url = *parsedUrl
c.KeyName = aux.KeyName
c.EmailSecretName = aux.EmailSecretName
return nil
}
type CertificatePolicy struct {
RenewBefore time.Duration `validate:"required"`
}
func (c *CertificatePolicy) UnmarshalYAML(value *yaml.Node) error {
aux := &struct {
RenewBefore string `validate:"required"`
}{}
if err := value.Decode(aux); err != nil {
return err
}
if err := validate.Struct(aux); err != nil {
return errors.Wrap(err, "CertificatePolicy failed validation")
}
duration, err := time.ParseDuration(aux.RenewBefore)
if err != nil {
return errors.Wrap(err, "CertificatePolicy has bad duration")
}
c.RenewBefore = duration
return nil
}
type Validator struct {
Name string `validate:"required"`
Dns01 string `validate:"required"`
Http01 int `validate:"required,max=65535"`
}
type Certificate struct {
Metadata CertificateMetadata `validate:"required"`
Source CertificateSource `validate:"required"`
Validator string `validate:"required"`
Installer CertificateInstaller `validate:"required"`
Policy *CertificatePolicy
}
type CertificateMetadata struct {
Name string `validate:"required"`
Domains []string `validate:"required,dive,required"`
}
type CertificateSource struct {
Type string `validate:"required"`
Location string `validate:"required"`
}
type CertificateInstaller struct {
Type string `validate:"required"`
Location string `validate:"required"`
}
type Config struct {
Acme AcmeConfig `validate:"required"`
State StateConfig `validate:"required"`
GlobalPolicy CertificatePolicy `validate:"required"`
Validators []Validator `validate:"required,dive,required"`
Certs []Certificate `validate:"required,dive,required"`
}
func Load(path string) (*Config, error) {
confBytes, err := ioutil.ReadFile(path)
if err != nil {
return nil, errors.Wrap(err, "unable to read config file")
}
conf := Config{}
if err := yaml.Unmarshal(confBytes, &conf); err != nil {
return nil, errors.Wrap(err, "unable to unmarshal YAML")
}
if err := validate.Struct(conf); err != nil {
return nil, errors.Wrap(err, "config failed validation")
}
return &conf, nil
}