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factory.go
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factory.go
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package database
import (
"github.com/madyar997/sso-jcode/internal/database/drivers"
"github.com/madyar997/sso-jcode/internal/database/drivers/mongo"
"github.com/madyar997/sso-jcode/internal/database/drivers/postgres"
"log"
)
type DataStoreFactory func(conf map[string]string) (drivers.DataStore, error)
var dataStoreFactories = make(map[string]DataStoreFactory)
func Register(name string, factory DataStoreFactory) {
if factory == nil {
log.Panicf("datastore factory %s does not exist.", name)
}
_, registered := dataStoreFactories[name]
if registered {
log.Printf("datastore factory %s already registered. Ignoring.", name)
} else {
dataStoreFactories[name] = factory
}
}
func init() {
Register("postgres", postgres.New)
Register("mongo", mongo.New)
//регистрация монги
}
func New(conf map[string]string) (drivers.DataStore, error) {
if conf == nil {
return nil, ErrEmptyConfigStruct
}
engineName := (conf)["datastore"]
engineFactory, ok := dataStoreFactories[engineName]
if !ok {
availableDataStores := make([]string, 0, len(dataStoreFactories)-1)
for k := range dataStoreFactories {
availableDataStores = append(availableDataStores, k)
}
return nil, ErrInvalidDatastoreName.Error(availableDataStores)
}
return engineFactory(conf)
}
func Connect(conf map[string]string) (drivers.DataStore, error) {
ds, err := New(conf)
if err != nil {
log.Printf("[ERROR] cannot create datastore: %v", err)
return nil, err
}
if err = ds.Connect(); err != nil {
log.Printf("[ERROR] cannot connect to database %s: %v", ds.Name(), err)
return nil, err
}
return ds, nil
}