/
sql_wrapper.go
437 lines (379 loc) · 14.1 KB
/
sql_wrapper.go
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package db
import (
"encoding/json"
"fmt"
"github.com/abolfazlbeh/zhycan/internal/config"
"gorm.io/driver/mysql"
"gorm.io/driver/postgres"
"gorm.io/driver/sqlite"
"gorm.io/gorm"
"reflect"
"strings"
)
// Mark: Definitions
// SqlWrapper struct
type SqlWrapper[T SqlConfigurable] struct {
name string
config T
databaseInstance *gorm.DB
}
// init - SqlWrapper Constructor - It initializes the wrapper
func (s *SqlWrapper[T]) init(name string) error {
s.name = name
// reading config
nameParts := strings.Split(s.name, "/")
if reflect.ValueOf(s.config).Type() == reflect.TypeOf(Sqlite{}) {
filenameKey := fmt.Sprintf("%s.%s", nameParts[1], "db")
filenameStr, err := config.GetManager().Get(nameParts[0], filenameKey)
if err != nil {
return err
}
optionsKey := fmt.Sprintf("%s.%s", nameParts[1], "options")
optionsObj, err := config.GetManager().Get(nameParts[0], optionsKey)
if err != nil {
return err
}
optionsMap := make(map[string]string, len(optionsObj.(map[string]interface{})))
for key, item := range optionsObj.(map[string]interface{}) {
optionsMap[key] = item.(string)
}
var internalConfig *Config
internalConfigKey := fmt.Sprintf("%s.%s", nameParts[1], "config")
internalConfigObj, err := config.GetManager().Get(nameParts[0], internalConfigKey)
if err == nil {
// first marshal
configData, err := json.Marshal(internalConfigObj)
if err == nil {
_ = json.Unmarshal(configData, &internalConfig)
}
}
var internalLogger *LoggerConfig
internalLoggerKey := fmt.Sprintf("%s.%s", nameParts[1], "logger")
internalLoggerObj, err := config.GetManager().Get(nameParts[0], internalLoggerKey)
if err == nil {
// first marshal
configData, err := json.Marshal(internalLoggerObj)
if err == nil {
_ = json.Unmarshal(configData, &internalLogger)
}
}
s.config = reflect.ValueOf(Sqlite{
FileName: filenameStr.(string),
Options: optionsMap,
Config: internalConfig,
LoggerConfig: internalLogger,
}).Interface().(T)
} else if reflect.ValueOf(s.config).Type() == reflect.TypeOf(Mysql{}) {
dbNameKey := fmt.Sprintf("%s.%s", nameParts[1], "db")
dbNameStr, err := config.GetManager().Get(nameParts[0], dbNameKey)
if err != nil {
return err
}
hostKey := fmt.Sprintf("%s.%s", nameParts[1], "host")
hostStr, err := config.GetManager().Get(nameParts[0], hostKey)
if err != nil {
return err
}
portKey := fmt.Sprintf("%s.%s", nameParts[1], "port")
portStr, err := config.GetManager().Get(nameParts[0], portKey)
if err != nil {
return err
}
protocolKey := fmt.Sprintf("%s.%s", nameParts[1], "protocol")
protocolStr, err := config.GetManager().Get(nameParts[0], protocolKey)
if err != nil {
return err
}
usernameKey := fmt.Sprintf("%s.%s", nameParts[1], "username")
usernameStr, err := config.GetManager().Get(nameParts[0], usernameKey)
if err != nil {
return err
}
passwordKey := fmt.Sprintf("%s.%s", nameParts[1], "password")
passwordStr, err := config.GetManager().Get(nameParts[0], passwordKey)
if err != nil {
return err
}
optionsKey := fmt.Sprintf("%s.%s", nameParts[1], "options")
optionsObj, err := config.GetManager().Get(nameParts[0], optionsKey)
if err != nil {
return err
}
optionsMap := make(map[string]string, len(optionsObj.(map[string]interface{})))
for key, item := range optionsObj.(map[string]interface{}) {
optionsMap[key] = item.(string)
}
var internalConfig *Config
internalConfigKey := fmt.Sprintf("%s.%s", nameParts[1], "config")
internalConfigObj, err := config.GetManager().Get(nameParts[0], internalConfigKey)
if err == nil {
// first marshal
configData, err := json.Marshal(internalConfigObj)
if err == nil {
_ = json.Unmarshal(configData, &internalConfig)
}
}
var internalLogger *LoggerConfig
internalLoggerKey := fmt.Sprintf("%s.%s", nameParts[1], "logger")
internalLoggerObj, err := config.GetManager().Get(nameParts[0], internalLoggerKey)
if err == nil {
// first marshal
configData, err := json.Marshal(internalLoggerObj)
if err == nil {
_ = json.Unmarshal(configData, &internalLogger)
}
}
var specificConfig *MysqlSpecificConfig
specificConfigKey := fmt.Sprintf("%s.%s", nameParts[1], "specific_config")
specificConfigObj, err := config.GetManager().Get(nameParts[0], specificConfigKey)
if err == nil {
// first marshal
configData, err := json.Marshal(specificConfigObj)
if err == nil {
_ = json.Unmarshal(configData, &specificConfig)
}
}
s.config = reflect.ValueOf(Mysql{
DatabaseName: dbNameStr.(string),
Username: usernameStr.(string),
Password: passwordStr.(string),
Host: hostStr.(string),
Port: portStr.(string),
Protocol: protocolStr.(string),
Options: optionsMap,
Config: internalConfig,
LoggerConfig: internalLogger,
SpecificConfig: specificConfig,
}).Interface().(T)
} else if reflect.ValueOf(s.config).Type() == reflect.TypeOf(Postgresql{}) {
dbNameKey := fmt.Sprintf("%s.%s", nameParts[1], "db")
dbNameStr, err := config.GetManager().Get(nameParts[0], dbNameKey)
if err != nil {
return err
}
hostKey := fmt.Sprintf("%s.%s", nameParts[1], "host")
hostStr, err := config.GetManager().Get(nameParts[0], hostKey)
if err != nil {
return err
}
portKey := fmt.Sprintf("%s.%s", nameParts[1], "port")
portStr, err := config.GetManager().Get(nameParts[0], portKey)
if err != nil {
return err
}
usernameKey := fmt.Sprintf("%s.%s", nameParts[1], "username")
usernameStr, err := config.GetManager().Get(nameParts[0], usernameKey)
if err != nil {
return err
}
passwordKey := fmt.Sprintf("%s.%s", nameParts[1], "password")
passwordStr, err := config.GetManager().Get(nameParts[0], passwordKey)
if err != nil {
return err
}
optionsKey := fmt.Sprintf("%s.%s", nameParts[1], "options")
optionsObj, err := config.GetManager().Get(nameParts[0], optionsKey)
if err != nil {
return err
}
optionsMap := make(map[string]string, len(optionsObj.(map[string]interface{})))
for key, item := range optionsObj.(map[string]interface{}) {
optionsMap[key] = item.(string)
}
var internalConfig *Config
internalConfigKey := fmt.Sprintf("%s.%s", nameParts[1], "config")
internalConfigObj, err := config.GetManager().Get(nameParts[0], internalConfigKey)
if err == nil {
// first marshal
configData, err := json.Marshal(internalConfigObj)
if err == nil {
_ = json.Unmarshal(configData, &internalConfig)
}
}
var internalLogger *LoggerConfig
internalLoggerKey := fmt.Sprintf("%s.%s", nameParts[1], "logger")
internalLoggerObj, err := config.GetManager().Get(nameParts[0], internalLoggerKey)
if err == nil {
// first marshal
configData, err := json.Marshal(internalLoggerObj)
if err == nil {
_ = json.Unmarshal(configData, &internalLogger)
}
}
var specificConfig *PostgresqlSpecificConfig
specificConfigKey := fmt.Sprintf("%s.%s", nameParts[1], "specific_config")
specificConfigObj, err := config.GetManager().Get(nameParts[0], specificConfigKey)
if err == nil {
// first marshal
configData, err := json.Marshal(specificConfigObj)
if err == nil {
_ = json.Unmarshal(configData, &specificConfig)
}
}
s.config = reflect.ValueOf(Postgresql{
DatabaseName: dbNameStr.(string),
Username: usernameStr.(string),
Password: passwordStr.(string),
Host: hostStr.(string),
Port: portStr.(string),
Options: optionsMap,
Config: internalConfig,
LoggerConfig: internalLogger,
SpecificConfig: specificConfig,
}).Interface().(T)
}
return nil
}
// MARK: Public functions
// GetDb - return associated internal Db
func (s *SqlWrapper[T]) GetDb() (*gorm.DB, error) {
if s.databaseInstance == nil {
if reflect.ValueOf(s.config).Type() == reflect.TypeOf(Sqlite{}) {
optionsQSArr := make([]string, 0)
config := reflect.ValueOf(s.config).Interface().(Sqlite)
for key, val := range config.Options {
optionsQSArr = append(optionsQSArr, fmt.Sprintf("%s=%s", key, val))
}
optionsQS := strings.Join(optionsQSArr, "&")
dsn := fmt.Sprintf("file:%s?%s", config.FileName, optionsQS)
internalConfig := &gorm.Config{}
if config.Config != nil {
internalConfig.DisableAutomaticPing = config.Config.DisableAutomaticPing
internalConfig.DisableForeignKeyConstraintWhenMigrating = config.Config.DisableForeignKeyConstraintWhenMigrating
internalConfig.DisableNestedTransaction = config.Config.DisableNestedTransaction
internalConfig.DryRun = config.Config.DryRun
internalConfig.PrepareStmt = config.Config.PrepareStmt
internalConfig.SkipDefaultTransaction = config.Config.SkipDefaultTransaction
internalConfig.IgnoreRelationshipsWhenMigrating = config.Config.IgnoreRelationshipsWhenMigrating
}
if config.LoggerConfig != nil {
internalConfig.Logger = NewDbLogger(*config.LoggerConfig)
}
db, err := gorm.Open(sqlite.Open(dsn), internalConfig)
if err != nil {
return nil, err
}
s.databaseInstance = db
} else if reflect.ValueOf(s.config).Type() == reflect.TypeOf(Mysql{}) {
optionsQSArr := make([]string, 0)
config := reflect.ValueOf(s.config).Interface().(Mysql)
for key, val := range config.Options {
optionsQSArr = append(optionsQSArr, fmt.Sprintf("%s=%s", key, val))
}
optionsQS := strings.Join(optionsQSArr, "&")
dsn := fmt.Sprintf("%s:%s@%s(%s:%s)/%s?%s", config.Username,
config.Password, config.Protocol, config.Host, config.Port,
config.DatabaseName, optionsQS)
internalConfig := &gorm.Config{}
if config.Config != nil {
internalConfig.DisableAutomaticPing = config.Config.DisableAutomaticPing
internalConfig.DisableForeignKeyConstraintWhenMigrating = config.Config.DisableForeignKeyConstraintWhenMigrating
internalConfig.DisableNestedTransaction = config.Config.DisableNestedTransaction
internalConfig.DryRun = config.Config.DryRun
internalConfig.PrepareStmt = config.Config.PrepareStmt
internalConfig.SkipDefaultTransaction = config.Config.SkipDefaultTransaction
internalConfig.IgnoreRelationshipsWhenMigrating = config.Config.IgnoreRelationshipsWhenMigrating
}
if config.LoggerConfig != nil {
internalConfig.Logger = NewDbLogger(*config.LoggerConfig)
}
if config.SpecificConfig == nil {
db, err := gorm.Open(mysql.Open(dsn), internalConfig)
if err != nil {
return nil, err
}
s.databaseInstance = db
} else {
db, err := gorm.Open(mysql.New(mysql.Config{
DSN: dsn,
SkipInitializeWithVersion: config.SpecificConfig.SkipInitializeWithVersion,
DefaultStringSize: config.SpecificConfig.DefaultStringSize,
DefaultDatetimePrecision: &config.SpecificConfig.DefaultDatetimePrecision,
DisableWithReturning: config.SpecificConfig.DisableWithReturning,
DisableDatetimePrecision: config.SpecificConfig.DisableDatetimePrecision,
DontSupportRenameIndex: !config.SpecificConfig.SupportRenameIndex,
DontSupportRenameColumn: !config.SpecificConfig.SupportRenameColumn,
DontSupportForShareClause: !config.SpecificConfig.SupportForShareClause,
DontSupportNullAsDefaultValue: !config.SpecificConfig.SupportNullAsDefaultValue,
DontSupportRenameColumnUnique: !config.SpecificConfig.SupportRenameColumnUnique,
}), internalConfig)
if err != nil {
return nil, err
}
s.databaseInstance = db
}
} else if reflect.ValueOf(s.config).Type() == reflect.TypeOf(Postgresql{}) {
optionsQSArr := make([]string, 0)
config := reflect.ValueOf(s.config).Interface().(Postgresql)
for key, val := range config.Options {
optionsQSArr = append(optionsQSArr, fmt.Sprintf("%s=%s", key, val))
}
optionsQS := strings.Join(optionsQSArr, " ")
dsn := fmt.Sprintf("host=%s user=%s password=%s dbname=%s port=%s %s",
config.Host, config.Username, config.Password, config.DatabaseName,
config.Port, optionsQS,
)
internalConfig := &gorm.Config{}
if config.Config != nil {
internalConfig.DisableAutomaticPing = config.Config.DisableAutomaticPing
internalConfig.DisableForeignKeyConstraintWhenMigrating = config.Config.DisableForeignKeyConstraintWhenMigrating
internalConfig.DisableNestedTransaction = config.Config.DisableNestedTransaction
internalConfig.DryRun = config.Config.DryRun
internalConfig.PrepareStmt = config.Config.PrepareStmt
internalConfig.SkipDefaultTransaction = config.Config.SkipDefaultTransaction
internalConfig.IgnoreRelationshipsWhenMigrating = config.Config.IgnoreRelationshipsWhenMigrating
}
if config.LoggerConfig != nil {
internalConfig.Logger = NewDbLogger(*config.LoggerConfig)
}
if config.SpecificConfig == nil {
db, err := gorm.Open(postgres.Open(dsn), internalConfig)
if err != nil {
return nil, err
}
s.databaseInstance = db
} else {
db, err := gorm.Open(postgres.New(postgres.Config{
DSN: dsn,
PreferSimpleProtocol: config.SpecificConfig.PreferSimpleProtocol,
WithoutReturning: config.SpecificConfig.WithoutReturning,
}), internalConfig)
if err != nil {
return nil, err
}
s.databaseInstance = db
}
}
}
return s.databaseInstance, nil
}
// Migrate - migrate models to the database
func (s *SqlWrapper[T]) Migrate(models ...interface{}) error {
err := s.databaseInstance.AutoMigrate(models...)
if err != nil {
return NewMigrateErr(err)
}
return nil
}
// AttachMigrationFunc - attach migration function to be called by end user
func (s *SqlWrapper[T]) AttachMigrationFunc(f func(migrator gorm.Migrator) error) error {
err := f(s.databaseInstance.Migrator())
if err != nil {
return NewMigrateErr(err)
}
return nil
}
// NewSqlWrapper - create a new instance of SqlWrapper and returns it
func NewSqlWrapper[T SqlConfigurable](name string, dbType string) (*SqlWrapper[T], error) {
if strings.ToLower(dbType) == "sqlite" ||
strings.ToLower(dbType) == "mysql" ||
strings.ToLower(dbType) == "postgresql" {
wrapper := &SqlWrapper[T]{}
err := wrapper.init(name)
if err != nil {
return nil, NewCreateSqlWrapperErr(err)
}
return wrapper, nil
}
return nil, NewNotSupportedDbTypeErr(dbType)
}