123 lines
3.4 KiB
Go
123 lines
3.4 KiB
Go
package bbgo
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import (
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"context"
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"os"
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"reflect"
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"sync"
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"github.com/codingconcepts/env"
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"github.com/pkg/errors"
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log "github.com/sirupsen/logrus"
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"git.qtrade.icu/lychiyu/bbgo/pkg/dynamic"
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"git.qtrade.icu/lychiyu/bbgo/pkg/service"
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)
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var defaultPersistenceServiceFacade = &service.PersistenceServiceFacade{
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Memory: service.NewMemoryService(),
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}
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// Sync syncs the object properties into the persistence layer
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func Sync(ctx context.Context, obj interface{}) {
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id := dynamic.CallID(obj)
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if len(id) == 0 {
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log.Warnf("InstanceID() is not provided, can not sync persistence")
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return
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}
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isolation := GetIsolationFromContext(ctx)
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ps := isolation.persistenceServiceFacade.Get()
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locker, ok := obj.(sync.Locker)
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if ok {
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locker.Lock()
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defer locker.Unlock()
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}
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err := storePersistenceFields(obj, id, ps)
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if err != nil {
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log.WithError(err).Errorf("persistence sync failed")
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}
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}
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func loadPersistenceFields(obj interface{}, id string, persistence service.PersistenceService) error {
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return dynamic.IterateFieldsByTag(obj, "persistence", true, func(tag string, field reflect.StructField, value reflect.Value) error {
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log.Debugf("[loadPersistenceFields] loading value into field %v, tag = %s, original value = %v", field, tag, value)
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newValueInf := dynamic.NewTypeValueInterface(value.Type())
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// inf := value.Interface()
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store := persistence.NewStore("state", id, tag)
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if err := store.Load(&newValueInf); err != nil {
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if err == service.ErrPersistenceNotExists {
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log.Debugf("[loadPersistenceFields] state key does not exist, id = %v, tag = %s", id, tag)
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return nil
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}
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return err
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}
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newValue := reflect.ValueOf(newValueInf)
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if value.Kind() != reflect.Ptr && newValue.Kind() == reflect.Ptr {
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newValue = newValue.Elem()
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}
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log.Debugf("[loadPersistenceFields] %v = %v -> %v\n", field, value, newValue)
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value.Set(newValue)
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return nil
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})
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}
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func storePersistenceFields(obj interface{}, id string, persistence service.PersistenceService) error {
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return dynamic.IterateFieldsByTag(obj, "persistence", true, func(tag string, ft reflect.StructField, fv reflect.Value) error {
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log.Debugf("[storePersistenceFields] storing value from field %v, tag = %s, original value = %v", ft, tag, fv)
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inf := fv.Interface()
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store := persistence.NewStore("state", id, tag)
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return store.Save(inf)
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})
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}
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func NewPersistenceServiceFacade(conf *PersistenceConfig) (*service.PersistenceServiceFacade, error) {
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facade := &service.PersistenceServiceFacade{
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Memory: service.NewMemoryService(),
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}
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if conf.Redis != nil {
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if err := env.Set(conf.Redis); err != nil {
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return nil, err
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}
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redisPersistence := service.NewRedisPersistenceService(conf.Redis)
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facade.Redis = redisPersistence
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}
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if conf.Json != nil {
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if _, err := os.Stat(conf.Json.Directory); os.IsNotExist(err) {
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if err2 := os.MkdirAll(conf.Json.Directory, 0777); err2 != nil {
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return nil, errors.Wrapf(err2, "can not create directory: %s", conf.Json.Directory)
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}
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}
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jsonPersistence := &service.JsonPersistenceService{Directory: conf.Json.Directory}
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facade.Json = jsonPersistence
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}
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return facade, nil
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}
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func ConfigurePersistence(ctx context.Context, environ *Environment, conf *PersistenceConfig) error {
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facade, err := NewPersistenceServiceFacade(conf)
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if err != nil {
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return err
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}
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isolation := GetIsolationFromContext(ctx)
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isolation.persistenceServiceFacade = facade
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environ.PersistentService = facade
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return nil
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}
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