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setting.go
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setting.go
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package logic
import (
"context"
"encoding/json"
"github.com/tranHieuDev23/cato/internal/dataaccess/cache"
"github.com/tranHieuDev23/cato/internal/dataaccess/db"
"github.com/tranHieuDev23/cato/internal/handlers/http/rpc"
"github.com/tranHieuDev23/cato/internal/utils"
"gitlab.com/pjrpc/pjrpc/v2"
"go.uber.org/zap"
"gorm.io/gorm"
)
type Setting interface {
GetSetting(ctx context.Context) (*rpc.Setting, error)
UpdateSetting(ctx context.Context, in *rpc.UpdateSettingRequest, token string) (*rpc.UpdateSettingResponse, error)
WithDB(db *gorm.DB) Setting
}
type setting struct {
token Token
role Role
settingDataAccessor db.SettingDataAccessor
settingCache cache.Setting
db *gorm.DB
logger *zap.Logger
}
func NewSetting(
token Token,
role Role,
settingDataAccessor db.SettingDataAccessor,
settingCache cache.Setting,
db *gorm.DB,
logger *zap.Logger,
) Setting {
return &setting{
token: token,
role: role,
settingDataAccessor: settingDataAccessor,
settingCache: settingCache,
db: db,
logger: logger,
}
}
func (s setting) GetSetting(ctx context.Context) (*rpc.Setting, error) {
logger := utils.LoggerWithContext(ctx, s.logger)
rpcSetting := new(rpc.Setting)
cachedSettingBytes, err := s.settingCache.Get(ctx)
if err == nil && cachedSettingBytes != nil {
err = json.Unmarshal(cachedSettingBytes, rpcSetting)
if err != nil {
logger.
With(zap.ByteString("data", cachedSettingBytes)).
With(zap.Error(err)).
Warn("failed to unmarshal setting bytes, will return the default")
return rpcSetting, nil
}
}
logger.With(zap.Error(err)).Warn("failed to get cached setting bytes from cache, will fail back to database")
setting, err := s.settingDataAccessor.GetSetting(ctx)
if err != nil {
return nil, err
}
if setting == nil {
logger.Info("no setting found in the database, will return the default")
return rpcSetting, nil
}
err = s.settingCache.Set(ctx, setting.Data)
if err != nil {
logger.With(zap.Error(err)).Warn("failed to set cached setting bytes to cache")
}
err = json.Unmarshal(setting.Data, rpcSetting)
if err != nil {
logger.
With(zap.ByteString("data", setting.Data)).
With(zap.Error(err)).
Warn("failed to unmarshal setting bytes, will return the default")
return rpcSetting, nil
}
return rpcSetting, nil
}
func (s setting) UpdateSetting(
ctx context.Context,
in *rpc.UpdateSettingRequest,
token string,
) (*rpc.UpdateSettingResponse, error) {
logger := utils.LoggerWithContext(ctx, s.logger)
account, err := s.token.GetAccount(ctx, token)
if err != nil {
return nil, err
}
hasPermission, err := s.role.AccountHasPermission(ctx, string(account.Role), PermissionSettingsWrite)
if err != nil {
return nil, err
}
if !hasPermission {
return nil, pjrpc.JRPCErrServerError(int(rpc.ErrorCodePermissionDenied))
}
if txErr := s.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
settingData, settingErr := json.Marshal(in.Setting)
if settingErr != nil {
logger.With(zap.Error(settingErr)).Error("failed to marshal setting")
return settingErr
}
return utils.ExecuteUntilFirstError(
func() error {
return s.settingDataAccessor.WithDB(tx).UpsertSetting(ctx, &db.Setting{
Data: settingData,
})
},
func() error { return s.settingCache.Set(ctx, settingData) },
)
}); txErr != nil {
return nil, txErr
}
return &rpc.UpdateSettingResponse{
Setting: in.Setting,
}, nil
}
func (s setting) WithDB(db *gorm.DB) Setting {
return &setting{
settingDataAccessor: s.settingDataAccessor.WithDB(db),
settingCache: s.settingCache,
db: db,
logger: s.logger,
}
}