/
storage.go
833 lines (762 loc) · 21 KB
/
storage.go
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package rdb
import (
"fmt"
"time"
"github.com/c-bata/goptuna"
"github.com/google/uuid"
"github.com/jinzhu/gorm"
)
var _ goptuna.Storage = &Storage{}
// NewStorage returns new RDB storage.
// Deprecated: Please use `github.com/c-bata/goptuna/rdb.v2` package.
func NewStorage(db *gorm.DB) *Storage {
return &Storage{
db: db,
}
}
// Storage stores data in your relational databases.
// Deprecated: Please use `github.com/c-bata/goptuna/rdb.v2` package.
type Storage struct {
db *gorm.DB
}
// CreateNewStudy creates study and returns studyID.
func (s *Storage) CreateNewStudy(name string) (int, error) {
if name == "" {
u, err := uuid.NewUUID()
if err != nil {
return -1, err
}
name = goptuna.DefaultStudyNamePrefix + u.String()
}
study := &studyModel{
Name: name,
Direction: directionNotSet,
}
err := s.db.Create(study).Error
return study.ID, err
}
// DeleteNewStudy creates study and returns studyID.
func (s *Storage) DeleteStudy(studyID int) error {
return s.db.Delete(&studyModel{
ID: studyID,
}).Error
}
// SetStudyDirection sets study direction of the objective.
func (s *Storage) SetStudyDirection(studyID int, direction goptuna.StudyDirection) error {
d := directionMinimize
if direction == goptuna.StudyDirectionMaximize {
d = directionMaximize
}
err := s.db.Model(&studyModel{}).
Where("study_id = ?", studyID).
Update("direction", d).Error
return err
}
// SetStudyUserAttr to store the value for the user.
func (s *Storage) SetStudyUserAttr(studyID int, key string, value string) error {
var result studyUserAttributeModel
return s.db.Where(&studyUserAttributeModel{
UserAttributeReferStudy: studyID,
Key: key,
}).Assign(&studyUserAttributeModel{
UserAttributeReferStudy: studyID,
Key: key,
ValueJSON: encodeAttrValue(value),
}).FirstOrCreate(&result).Error
}
// SetStudySystemAttr to store the value for the system.
func (s *Storage) SetStudySystemAttr(studyID int, key string, value string) error {
var result studySystemAttributeModel
return s.db.Where(&studySystemAttributeModel{
SystemAttributeReferStudy: studyID,
Key: key,
}).Assign(&studySystemAttributeModel{
SystemAttributeReferStudy: studyID,
Key: key,
ValueJSON: encodeAttrValue(value),
}).FirstOrCreate(&result).Error
}
// GetStudyIDFromName return the study id from study name.
func (s *Storage) GetStudyIDFromName(name string) (int, error) {
var study studyModel
err := s.db.First(&study, "study_name = ?", name).Error
return study.ID, err
}
// GetStudyIDFromTrialID return the study id from trial id.
func (s *Storage) GetStudyIDFromTrialID(trialID int) (int, error) {
var trial trialModel
err := s.db.First(&trial, "trial_id = ?", trialID).Error
return trial.TrialReferStudy, err
}
// GetStudyNameFromID return the study name from study id.
func (s *Storage) GetStudyNameFromID(studyID int) (string, error) {
var study studyModel
s.db.First(&study, "study_id = ?", studyID)
return study.Name, nil
}
// GetStudyUserAttrs to restore the attributes for the user.
func (s *Storage) GetStudyUserAttrs(studyID int) (map[string]string, error) {
var attrs []studyUserAttributeModel
err := s.db.Find(&attrs, "study_id = ?", studyID).Error
if err != nil {
return nil, err
}
res := make(map[string]string, len(attrs))
for i := range attrs {
res[attrs[i].Key] = decodeAttrValue(attrs[i].ValueJSON)
}
return res, nil
}
// GetStudySystemAttrs to restore the attributes for the system.
func (s *Storage) GetStudySystemAttrs(studyID int) (map[string]string, error) {
var attrs []studySystemAttributeModel
err := s.db.Find(&attrs, "study_id = ?", studyID).Error
if err != nil {
return nil, err
}
res := make(map[string]string, len(attrs))
for i := range attrs {
res[attrs[i].Key] = decodeAttrValue(attrs[i].ValueJSON)
}
return res, nil
}
// GetAllStudySummaries returns all study summaries.
func (s *Storage) GetAllStudySummaries() ([]goptuna.StudySummary, error) {
var err error
var studies []studyModel
err = s.db.
Preload("UserAttributes").
Preload("SystemAttributes").
Preload("Trials").
Find(&studies).Error
if err != nil {
return nil, err
}
res := make([]goptuna.StudySummary, len(studies))
for i, study := range studies {
var best *trialModel
var start *time.Time
for i := range study.Trials {
if study.Trials[i].State == trialStateComplete {
if best == nil {
best = &study.Trials[i]
}
if study.Direction == directionMaximize {
if best.Value < study.Trials[i].Value {
best = &study.Trials[i]
}
} else {
if best.Value > study.Trials[i].Value {
best = &study.Trials[i]
}
}
}
if start == nil {
start = study.Trials[i].DatetimeStart
}
if start.Unix() < study.Trials[i].DatetimeStart.Unix() {
start = study.Trials[i].DatetimeStart
}
}
var ft goptuna.FrozenTrial
if best != nil {
ft, err = s.GetTrial(best.ID)
if err != nil {
return nil, err
}
}
var studyStart time.Time
if start != nil {
studyStart = *start
}
ss, err := toStudySummary(studies[i], ft, studyStart)
if err != nil {
return nil, err
}
res[i] = ss
}
return res, nil
}
// CreateNewTrial creates trial and returns trialID.
func (s *Storage) CreateNewTrial(studyID int) (int, error) {
tx := s.db.Begin()
if tx.Error != nil {
return -1, tx.Error
}
defer func() {
if r := recover(); r != nil {
tx.Rollback()
}
}()
// Create a new trial
start := time.Now()
trial := &trialModel{
TrialReferStudy: studyID,
State: trialStateRunning,
DatetimeStart: &start,
}
if err := tx.Create(trial).Error; err != nil {
tx.Rollback()
return -1, err
}
// Calculate the trial number
var number int
err := tx.Model(&trialModel{}).
Where("study_id = ?", studyID).
Where("trial_id < ?", trial.ID).
Count(&number).Error
if err != nil {
tx.Rollback()
return -1, err
}
err = tx.Model(&trialModel{}).
Where("trial_id = ?", trial.ID).
Update("number", number).Error
if err != nil {
tx.Rollback()
return -1, err
}
err = tx.Commit().Error
return trial.ID, err
}
// CloneTrial creates new Trial from the given base Trial.
func (s *Storage) CloneTrial(studyID int, baseTrial goptuna.FrozenTrial) (int, error) {
tx := s.db.Begin()
if tx.Error != nil {
return -1, tx.Error
}
defer func() {
if r := recover(); r != nil {
tx.Rollback()
}
}()
// Because only `RUNNING` trials can be updated,
// we temporarily set the state of the new trial to `RUNNING`.
// After all fields of the trial have been updated,
// the state is set to `template_trial.state`.
tempState := trialStateWaiting
// Avoid to insert zero-time for `NON_ZERO_DATE` mode on MySQL.
// See https://github.com/jinzhu/gorm/issues/595
var datetimeStart, datetimeComplete *time.Time
if !baseTrial.DatetimeStart.IsZero() {
datetimeStart = &baseTrial.DatetimeStart
}
if !baseTrial.DatetimeComplete.IsZero() {
datetimeComplete = &baseTrial.DatetimeComplete
}
trial := &trialModel{
TrialReferStudy: studyID,
State: tempState,
Value: baseTrial.Value,
DatetimeStart: datetimeStart,
DatetimeComplete: datetimeComplete,
}
if err := tx.Create(trial).Error; err != nil {
tx.Rollback()
return -1, err
}
// params
for name := range baseTrial.InternalParams {
d, ok := baseTrial.Distributions[name]
if !ok {
tx.Rollback()
return -1, fmt.Errorf("'%s' distribution is not found", name)
}
jsonBytes, err := goptuna.DistributionToJSON(d)
if err != nil {
tx.Rollback()
return -1, err
}
err = tx.Create(&trialParamModel{
TrialParamReferTrial: trial.ID,
Name: name,
Value: baseTrial.InternalParams[name],
DistributionJSON: string(jsonBytes),
}).Error
}
// user attrs
for key := range baseTrial.UserAttrs {
err := tx.Create(&trialUserAttributeModel{
UserAttributeReferTrial: trial.ID,
Key: key,
ValueJSON: encodeAttrValue(baseTrial.UserAttrs[key]),
}).Error
if err != nil {
tx.Rollback()
return -1, err
}
}
// system attrs
for key := range baseTrial.SystemAttrs {
err := tx.Create(&trialSystemAttributeModel{
SystemAttributeReferTrial: trial.ID,
Key: key,
ValueJSON: encodeAttrValue(baseTrial.SystemAttrs[key]),
}).Error
if err != nil {
tx.Rollback()
return -1, err
}
}
// intermediate values
for step := range baseTrial.IntermediateValues {
err := tx.Create(&trialValueModel{
TrialValueReferTrial: trial.ID,
Step: step,
Value: baseTrial.IntermediateValues[step],
}).Error
if err != nil {
tx.Rollback()
return -1, err
}
}
// state
state, err := toStateInternalRepresentation(baseTrial.State)
if err != nil {
tx.Rollback()
return -1, err
}
err = tx.Model(&trialModel{}).
Where("trial_id = ?", trial.ID).
Update("state", state).Error
if err != nil {
tx.Rollback()
return -1, err
}
// trial number
var number int
err = tx.Model(&trialModel{}).
Where("study_id = ?", studyID).
Where("trial_id < ?", trial.ID).
Count(&number).Error
if err != nil {
tx.Rollback()
return -1, err
}
err = tx.Model(&trialModel{}).
Where("trial_id = ?", trial.ID).
Update("number", number).Error
if err != nil {
tx.Rollback()
return -1, err
}
err = tx.Commit().Error
return trial.ID, err
}
// SetTrialValue sets the value of trial.
func (s *Storage) SetTrialValue(trialID int, value float64) error {
tx := s.db.Begin()
defer func() {
if r := recover(); r != nil {
tx.Rollback()
}
}()
if tx.Error != nil {
return tx.Error
}
var trial trialModel
err := tx.First(&trial, "trial_id = ?", trialID).Error
if err != nil {
tx.Rollback()
return err
}
state, err := toStateExternalRepresentation(trial.State)
if err != nil {
tx.Rollback()
return err
}
if state.IsFinished() {
tx.Rollback()
return goptuna.ErrTrialCannotBeUpdated
}
err = tx.Model(&trialModel{}).
Where("trial_id = ?", trialID).
Update("value", value).Error
if err != nil {
tx.Rollback()
return err
}
return tx.Commit().Error
}
// SetTrialIntermediateValue sets the intermediate value of trial.
// While sets the intermediate value, trial.value is also updated.
func (s *Storage) SetTrialIntermediateValue(trialID int, step int, value float64) error {
tx := s.db.Begin()
defer func() {
if r := recover(); r != nil {
tx.Rollback()
}
}()
if tx.Error != nil {
return tx.Error
}
// Check whether trial is finished.
var trial trialModel
err := tx.First(&trial, "trial_id = ?", trialID).Error
if err != nil {
tx.Rollback()
return err
}
state, err := toStateExternalRepresentation(trial.State)
if err != nil {
tx.Rollback()
return err
}
if state.IsFinished() {
tx.Rollback()
return goptuna.ErrTrialCannotBeUpdated
}
// If trial value is already exist, then do rollback.
result := tx.First(&trialValueModel{}, "trial_id = ? AND step = ?", trialID, step)
if !(result.Error != nil && result.RecordNotFound()) {
tx.Rollback()
return err
}
// Set trial intermediate value
err = tx.Create(&trialValueModel{
TrialValueReferTrial: trialID,
Step: step,
Value: value,
}).Error
if err != nil {
tx.Rollback()
return err
}
return tx.Commit().Error
}
// SetTrialParam sets the sampled parameters of trial.
func (s *Storage) SetTrialParam(
trialID int,
paramName string,
paramValueInternal float64,
distribution interface{},
) error {
j, err := goptuna.DistributionToJSON(distribution)
if err != nil {
return err
}
err = s.db.Create(&trialParamModel{
TrialParamReferTrial: trialID,
Name: paramName,
Value: paramValueInternal,
DistributionJSON: string(j),
}).Error
if err != nil {
return err
}
return nil
}
// SetTrialState sets the state of trial.
func (s *Storage) SetTrialState(trialID int, state goptuna.TrialState) error {
xr, err := toStateInternalRepresentation(state)
if err != nil {
return err
}
tx := s.db.Begin()
defer func() {
if r := recover(); r != nil {
tx.Rollback()
}
}()
if tx.Error != nil {
return tx.Error
}
var trial trialModel
var result *gorm.DB
if s.db.Dialect().GetName() == "sqlite3" {
// TODO(c-bata): Fix concurrency problem on SQLite3.
// SQLite3 cannot interpret `FOR UPDATE` clause.
result = tx.First(&trial, "trial_id = ?", trialID)
} else {
result = tx.Set("gorm:query_option", "FOR UPDATE").
First(&trial, "trial_id = ?", trialID)
}
if result.RecordNotFound() {
tx.Rollback()
return goptuna.ErrInvalidTrialID
}
if result.Error != nil {
tx.Rollback()
return result.Error
}
previousState, err := toStateExternalRepresentation(trial.State)
if err != nil {
tx.Rollback()
return err
}
if previousState.IsFinished() || previousState == state {
tx.Rollback()
return goptuna.ErrTrialCannotBeUpdated
}
err = tx.Model(&trialModel{}).
Where("trial_id = ?", trialID).
Update("state", xr).Error
if err != nil {
tx.Rollback()
return err
}
if state.IsFinished() {
completedAt := time.Now()
err = tx.Model(&trialModel{}).
Where("trial_id = ?", trialID).
Update("datetime_complete", completedAt).Error
if err != nil {
tx.Rollback()
return err
}
}
return tx.Commit().Error
}
// SetTrialUserAttr to store the value for the user.
func (s *Storage) SetTrialUserAttr(trialID int, key string, value string) error {
var result trialUserAttributeModel
return s.db.Where(&trialUserAttributeModel{
UserAttributeReferTrial: trialID,
Key: key,
}).Assign(&trialUserAttributeModel{
UserAttributeReferTrial: trialID,
Key: key,
ValueJSON: encodeAttrValue(value),
}).FirstOrCreate(&result).Error
}
// SetTrialSystemAttr to store the value for the system.
func (s *Storage) SetTrialSystemAttr(trialID int, key string, value string) error {
var result trialSystemAttributeModel
return s.db.Where(&trialSystemAttributeModel{
SystemAttributeReferTrial: trialID,
Key: key,
}).Assign(&trialSystemAttributeModel{
SystemAttributeReferTrial: trialID,
Key: key,
ValueJSON: encodeAttrValue(value),
}).FirstOrCreate(&result).Error
}
// GetTrialNumberFromID returns the trial's number.
func (s *Storage) GetTrialNumberFromID(trialID int) (int, error) {
trial, err := s.GetTrial(trialID)
if err != nil {
return -1, err
}
return trial.Number, err
}
// GetTrialParam returns the internal parameter of the trial
func (s *Storage) GetTrialParam(trialID int, paramName string) (float64, error) {
var param trialParamModel
err := s.db.First(¶m, "trial_id = ? AND param_name = ?", trialID, paramName).Error
if err != nil {
return -1, err
}
return param.Value, nil
}
// GetTrialParams returns the external parameters in the trial
func (s *Storage) GetTrialParams(trialID int) (map[string]interface{}, error) {
trial, err := s.GetTrial(trialID)
if err != nil {
return nil, err
}
return trial.Params, nil
}
// GetTrialUserAttrs to restore the attributes for the user.
func (s *Storage) GetTrialUserAttrs(trialID int) (map[string]string, error) {
var attrs []trialUserAttributeModel
result := s.db.Find(&attrs, "trial_id = ?", trialID)
if result.Error != nil {
return nil, result.Error
}
res := make(map[string]string, len(attrs))
for i := range attrs {
res[attrs[i].Key] = decodeAttrValue(attrs[i].ValueJSON)
}
return res, nil
}
// GetTrialSystemAttrs to restore the attributes for the system.
func (s *Storage) GetTrialSystemAttrs(trialID int) (map[string]string, error) {
var attrs []trialSystemAttributeModel
result := s.db.Find(&attrs, "trial_id = ?", trialID)
if result.Error != nil {
return nil, result.Error
}
res := make(map[string]string, len(attrs))
for i := range attrs {
res[attrs[i].Key] = decodeAttrValue(attrs[i].ValueJSON)
}
return res, nil
}
// GetBestTrial returns the best trial.
func (s *Storage) GetBestTrial(studyID int) (goptuna.FrozenTrial, error) {
var err error
var study studyModel
err = s.db.
Preload("Trials").
First(&study, "study_id = ?", studyID).Error
if err != nil {
return goptuna.FrozenTrial{}, err
}
if len(study.Trials) == 0 {
return goptuna.FrozenTrial{}, nil
}
var best *trialModel
for i := range study.Trials {
if study.Trials[i].State != trialStateComplete {
continue
}
if best == nil {
best = &study.Trials[i]
}
if study.Direction == directionMaximize {
if best.Value < study.Trials[i].Value {
best = &study.Trials[i]
}
} else {
if best.Value > study.Trials[i].Value {
best = &study.Trials[i]
}
}
}
var ft goptuna.FrozenTrial
if best != nil {
ft, err = s.GetTrial(best.ID)
if err != nil {
return goptuna.FrozenTrial{}, err
}
}
return ft, err
}
// GetAllTrials returns the all trials.
func (s *Storage) GetAllTrials(studyID int) ([]goptuna.FrozenTrial, error) {
var trials []trialModel
var params []trialParamModel
var values []trialValueModel
var userAttrs []trialUserAttributeModel
var systemAttrs []trialSystemAttributeModel
if err := s.db.
Order("trial_id").
Find(&trials, "study_id = ?", studyID).
Error; err != nil {
return nil, err
}
if err := s.db.
Joins("JOIN trials ON trial_params.trial_id = trials.trial_id").
Find(¶ms, "trials.study_id = ?", studyID).Error; err != nil {
return nil, err
}
if err := s.db.
Joins("JOIN trials ON trial_values.trial_id = trials.trial_id").
Find(&values, "trials.study_id = ?", studyID).Error; err != nil {
return nil, err
}
if err := s.db.
Joins("JOIN trials ON trial_user_attributes.trial_id = trials.trial_id").
Find(&userAttrs, "trials.study_id = ?", studyID).Error; err != nil {
return nil, err
}
if err := s.db.
Joins("JOIN trials ON trial_system_attributes.trial_id = trials.trial_id").
Find(&systemAttrs, "trials.study_id = ?", studyID).Error; err != nil {
return nil, err
}
// Following SQL might raise 'too many SQL variables' error.
// See https://github.com/c-bata/goptuna/issues/30 for more details.
// err := s.db.
// Where("study_id = ?", studyID).
// Preload("UserAttributes").
// Preload("SystemAttributes").
// Preload("TrialParams").
// Preload("TrialValues").
// Find(&trials).Error
return s.mergeTrialsORM(trials, params, values, userAttrs, systemAttrs)
}
func (s *Storage) mergeTrialsORM(
trials []trialModel,
params []trialParamModel,
values []trialValueModel,
userAttrs []trialUserAttributeModel,
systemAttrs []trialSystemAttributeModel,
) ([]goptuna.FrozenTrial, error) {
idToTrials := make(map[int]trialModel, len(trials))
for i := range trials {
idToTrials[trials[i].ID] = trials[i]
}
defaultSize := 3
idToParams := make(map[int][]trialParamModel, len(trials))
for i := range params {
trialID := params[i].TrialParamReferTrial
l, ok := idToParams[trialID]
if !ok {
idToParams[trialID] = make([]trialParamModel, 0, defaultSize)
}
idToParams[trialID] = append(l, params[i])
}
idToValues := make(map[int][]trialValueModel, len(trials))
for i := range values {
trialID := values[i].TrialValueReferTrial
l, ok := idToValues[trialID]
if !ok {
idToValues[trialID] = make([]trialValueModel, 0, defaultSize)
}
idToValues[trialID] = append(l, values[i])
}
idToUserAttrs := make(map[int][]trialUserAttributeModel, len(trials))
for i := range userAttrs {
trialID := userAttrs[i].UserAttributeReferTrial
l, ok := idToUserAttrs[trialID]
if !ok {
idToUserAttrs[trialID] = make([]trialUserAttributeModel, 0, defaultSize)
}
idToUserAttrs[trialID] = append(l, userAttrs[i])
}
idToSystemAttrs := make(map[int][]trialSystemAttributeModel, len(trials))
for i := range systemAttrs {
trialID := systemAttrs[i].SystemAttributeReferTrial
l, ok := idToSystemAttrs[trialID]
if !ok {
idToSystemAttrs[trialID] = make([]trialSystemAttributeModel, 0, defaultSize)
}
idToSystemAttrs[trialID] = append(l, systemAttrs[i])
}
merged := make([]goptuna.FrozenTrial, 0, len(trials))
for i := range trials {
if v, ok := idToParams[trials[i].ID]; ok {
trials[i].TrialParams = v
}
if v, ok := idToValues[trials[i].ID]; ok {
trials[i].TrialValues = v
}
if v, ok := idToUserAttrs[trials[i].ID]; ok {
trials[i].UserAttributes = v
}
if v, ok := idToSystemAttrs[trials[i].ID]; ok {
trials[i].SystemAttributes = v
}
frozen, err := toFrozenTrial(trials[i])
if err != nil {
return nil, err
}
merged = append(merged, frozen)
}
return merged, nil
}
// GetStudyDirection returns study direction of the objective.
func (s *Storage) GetStudyDirection(studyID int) (goptuna.StudyDirection, error) {
var study studyModel
err := s.db.First(&study, "study_id = ?", studyID).Error
if err != nil {
return goptuna.StudyDirectionMinimize, err
}
return toGoptunaStudyDirection(study.Direction), nil
}
// GetTrial returns Trial.
func (s *Storage) GetTrial(trialID int) (goptuna.FrozenTrial, error) {
var trial trialModel
err := s.db.
Preload("UserAttributes").
Preload("SystemAttributes").
Preload("TrialParams").
Preload("TrialValues").
First(&trial, "trial_id = ?", trialID).Error
if err != nil {
return goptuna.FrozenTrial{}, err
}
ft, err := toFrozenTrial(trial)
return ft, err
}