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dex/cmd/poke/config.go

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2016-07-25 20:00:28 +00:00
package main
import (
"fmt"
"github.com/coreos/poke/connector"
"github.com/coreos/poke/connector/github"
"github.com/coreos/poke/connector/ldap"
"github.com/coreos/poke/connector/mock"
"github.com/coreos/poke/storage"
"github.com/coreos/poke/storage/kubernetes"
)
// Config is the config format for the main application.
type Config struct {
Issuer string `yaml:"issuer"`
Storage Storage `yaml:"storage"`
Connectors []Connector `yaml:"connectors"`
Web Web `yaml:"web"`
}
// Web is the config format for the HTTP server.
type Web struct {
HTTP string `yaml:"http"`
HTTPS string `yaml:"https"`
TLSCert string `yaml:"tlsCert"`
TLSKey string `yaml:"tlsKey"`
}
// Storage holds app's storage configuration.
type Storage struct {
Type string `yaml:"type"`
Config StorageConfig `yaml:"config"`
}
// UnmarshalYAML allows Storage to unmarshal its config field dynamically
// depending on the type of storage.
func (s *Storage) UnmarshalYAML(unmarshal func(interface{}) error) error {
var storageMeta struct {
Type string `yaml:"type"`
}
if err := unmarshal(&storageMeta); err != nil {
return err
}
s.Type = storageMeta.Type
var c struct {
Config StorageConfig `yaml:"config"`
}
switch storageMeta.Type {
case "kubernetes":
c.Config = &kubernetes.Config{}
default:
return fmt.Errorf("unknown storage type %q", storageMeta.Type)
}
if err := unmarshal(c); err != nil {
return err
}
s.Config = c.Config
return nil
}
// StorageConfig is a configuration that can create a storage.
type StorageConfig interface {
Open() (storage.Storage, error)
}
// Connector is a magical type that can unmarshal YAML dynamically. The
// Type field determines the connector type, which is then customized for Config.
type Connector struct {
Type string `yaml:"type"`
Name string `yaml:"name"`
ID string `yaml:"id"`
Config ConnectorConfig `yaml:"config"`
}
// ConnectorConfig is a configuration that can open a connector.
type ConnectorConfig interface {
Open() (connector.Connector, error)
}
// UnmarshalYAML allows Connector to unmarshal its config field dynamically
// depending on the type of connector.
func (c *Connector) UnmarshalYAML(unmarshal func(interface{}) error) error {
var connectorMetadata struct {
Type string `yaml:"type"`
Name string `yaml:"name"`
ID string `yaml:"id"`
}
if err := unmarshal(&connectorMetadata); err != nil {
return err
}
c.Type = connectorMetadata.Type
c.Name = connectorMetadata.Name
c.ID = connectorMetadata.ID
switch c.Type {
case "mock":
var config struct {
Config mock.Config `yaml:"config"`
}
if err := unmarshal(&config); err != nil {
return err
}
c.Config = &config.Config
case "ldap":
var config struct {
Config ldap.Config `yaml:"config"`
}
if err := unmarshal(&config); err != nil {
return err
}
c.Config = &config.Config
case "github":
var config struct {
Config github.Config `yaml:"config"`
}
if err := unmarshal(&config); err != nil {
return err
}
c.Config = &config.Config
default:
return fmt.Errorf("unknown connector type %q", c.Type)
}
return nil
}