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experiment_history_service.go
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experiment_history_service.go
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package services
import (
"gorm.io/gorm"
"gorm.io/gorm/clause"
"github.com/caraml-dev/xp/management-service/errors"
"github.com/caraml-dev/xp/management-service/models"
"github.com/caraml-dev/xp/management-service/pagination"
)
type ListExperimentHistoryParams struct {
pagination.PaginationOptions
}
type ExperimentHistoryService interface {
ListExperimentHistory(experimentId int64, params ListExperimentHistoryParams) ([]*models.ExperimentHistory, *pagination.Paging, error)
GetExperimentHistory(experimentId int64, version int64) (*models.ExperimentHistory, error)
CreateExperimentHistory(*models.Experiment) (*models.ExperimentHistory, error)
GetDBRecord(experimentId models.ID, version int64) (*models.ExperimentHistory, error)
}
type experimentHistoryService struct {
db *gorm.DB
}
func NewExperimentHistoryService(db *gorm.DB) ExperimentHistoryService {
return &experimentHistoryService{
db: db,
}
}
func (svc *experimentHistoryService) ListExperimentHistory(
experimentId int64,
params ListExperimentHistoryParams,
) ([]*models.ExperimentHistory, *pagination.Paging, error) {
var history []*models.ExperimentHistory
query := svc.query().
Where("experiment_id = ?", experimentId).
Order("updated_at desc")
// Pagination
var pagingResponse *pagination.Paging
var count int64
err := pagination.ValidatePaginationParams(params.Page, params.PageSize)
if err != nil {
return nil, nil, err
}
pageOpts := pagination.NewPaginationOptions(params.Page, params.PageSize)
// Count total
query.Model(&history).Count(&count)
// Add offset and limit
query = query.Offset(int((*pageOpts.Page - 1) * *pageOpts.PageSize))
query = query.Limit(int(*pageOpts.PageSize))
// Format opts into paging response
pagingResponse = pagination.ToPaging(pageOpts, int(count))
if pagingResponse.Page > 1 && pagingResponse.Pages < pagingResponse.Page {
// Invalid query - total pages is less than the requested page
return nil, nil, errors.Newf(errors.BadInput,
"Requested page number %d exceeds total pages: %d.", pagingResponse.Page, pagingResponse.Pages)
}
// Filter experiments
err = query.Find(&history).Error
if err != nil {
return nil, nil, err
}
return history, pagingResponse, nil
}
func (svc *experimentHistoryService) GetExperimentHistory(
experimentId int64,
version int64,
) (*models.ExperimentHistory, error) {
history, err := svc.GetDBRecord(models.ID(experimentId), version)
if err != nil {
return nil, errors.Newf(errors.NotFound, err.Error())
}
return history, nil
}
func (svc *experimentHistoryService) CreateExperimentHistory(experiment *models.Experiment) (*models.ExperimentHistory, error) {
return svc.save(&models.ExperimentHistory{
Model: models.Model{
CreatedAt: experiment.UpdatedAt,
},
ExperimentID: experiment.ID,
Version: experiment.Version,
Description: experiment.Description,
EndTime: experiment.EndTime,
Interval: experiment.Interval,
Name: experiment.Name,
Segment: experiment.Segment,
Status: experiment.Status,
Treatments: experiment.Treatments,
Tier: experiment.Tier,
Type: experiment.Type,
StartTime: experiment.StartTime,
UpdatedBy: experiment.UpdatedBy,
})
}
func (svc *experimentHistoryService) GetDBRecord(
experimentId models.ID,
version int64,
) (*models.ExperimentHistory, error) {
var history models.ExperimentHistory
query := svc.query().
Where("experiment_id = ?", experimentId).
Where("version = ?", version).
First(&history)
if err := query.Error; err != nil {
return nil, err
}
return &history, nil
}
func (svc *experimentHistoryService) query() *gorm.DB {
return svc.db
}
func (svc *experimentHistoryService) save(history *models.ExperimentHistory) (*models.ExperimentHistory, error) {
if err := svc.query().Clauses(clause.OnConflict{
UpdateAll: true,
}).Create(history).Error; err != nil {
return nil, err
}
return svc.GetDBRecord(history.ExperimentID, history.Version)
}