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component.go
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component.go
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package export
import (
"context"
"encoding/json"
internal "github.com/cloudtrust/keycloak-bridge/internal/keycloakb"
msg "github.com/cloudtrust/keycloak-bridge/internal/constants"
keycloak "github.com/cloudtrust/keycloak-client"
"github.com/pkg/errors"
)
type component struct {
componentName string
componentVersion string
logger internal.Logger
re RealmExporter
s Storage
}
// RealmExporter interface
type RealmExporter interface {
GetRealms(ctx context.Context) ([]string, error)
ExportRealm(ctx context.Context, realmName string) (keycloak.RealmRepresentation, error)
}
// Storage interface
type Storage interface {
Save(componentName, version string, config []byte) error
Read(componentName, version string) ([]byte, error)
}
// NewComponent returns an export component.
func NewComponent(componentName, componentVersion string, logger internal.Logger, re RealmExporter, s Storage) Component {
return &component{
componentName: componentName,
componentVersion: componentVersion,
re: re,
s: s,
logger: logger,
}
}
// Export reads the config data in DB and returns it.
func (c *component) Export(ctx context.Context) (map[string]interface{}, error) {
var data, err = c.s.Read(c.componentName, c.componentVersion)
if err != nil {
c.logger.Warn(ctx, "err", err.Error())
return nil, err
}
var res = map[string]interface{}{}
err = json.Unmarshal(data, &res)
if err != nil {
return nil, err
}
return res, nil
}
// StoreAndExport export the config from keycloak, stores it in DB and returns it.
func (c *component) StoreAndExport(ctx context.Context) (map[string]interface{}, error) {
var realms []string
{
var err error
realms, err = c.re.GetRealms(ctx)
if err != nil {
c.logger.Warn(ctx, "err", err.Error())
return nil, errors.Wrap(err, msg.MsgErrCannotObtain+"."+msg.KeycloakRealms)
}
}
var realmsMap = map[string]interface{}{}
for _, r := range realms {
var realm, err = c.re.ExportRealm(ctx, r)
if err == nil {
realmsMap[r] = realm
} else {
c.logger.Warn(ctx, "err", err.Error())
realmsMap[r] = err.Error()
}
}
// Store
var data, err = json.Marshal(realmsMap)
if err != nil {
return nil, errors.Wrapf(err, msg.MsgErrCannotMarshal+"."+msg.Config+"."+c.componentName+"."+c.componentVersion)
}
err = c.s.Save(c.componentName, c.componentVersion, data)
if err != nil {
return nil, errors.Wrapf(err, msg.MsgErrCannotSaveConfigInDB+"."+c.componentName+"."+c.componentVersion)
}
return realmsMap, nil
}