package postgres import ( "fmt" "strconv" "time" "go.ipao.vip/atom/container" "go.ipao.vip/atom/opt" "gorm.io/gorm/logger" ) const DefaultPrefix = "Database" func DefaultProvider() container.ProviderContainer { return container.ProviderContainer{ Provider: Provide, Options: []opt.Option{ opt.Prefix(DefaultPrefix), }, } } type Config struct { Username string Password string Database string Schema string Host string Port uint SslMode string TimeZone string Prefix string // 表前缀 Singular bool // 是否开启全局禁用复数,true表示开启 MaxIdleConns int // 空闲中的最大连接数 MaxOpenConns int // 打开到数据库的最大连接数 // 可选:连接生命周期配置(0 表示不设置) ConnMaxLifetimeSeconds uint ConnMaxIdleTimeSeconds uint // 可选:GORM 日志与行为配置 LogLevel string // silent|error|warn|info(默认info) SlowThresholdMs uint // 慢查询阈值(毫秒)默认200 ParameterizedQueries bool // 占位符输出,便于日志安全与查询归并 PrepareStmt bool // 预编译语句缓存 SkipDefaultTransaction bool // 跳过默认事务 // 可选:DSN 增强 UseSearchPath bool // 在 DSN 中附带 search_path ApplicationName string // application_name } func (m Config) GormSlowThreshold() time.Duration { if m.SlowThresholdMs == 0 { return 200 * time.Millisecond // 默认200ms } return time.Duration(m.SlowThresholdMs) * time.Millisecond } func (m Config) GormLogLevel() logger.LogLevel { switch m.LogLevel { case "silent": return logger.Silent case "error": return logger.Error case "warn": return logger.Warn case "info", "": return logger.Info default: return logger.Info } } func (m *Config) checkDefault() { if m.MaxIdleConns == 0 { m.MaxIdleConns = 10 } if m.MaxOpenConns == 0 { m.MaxOpenConns = 100 } if m.Username == "" { m.Username = "postgres" } if m.SslMode == "" { m.SslMode = "disable" } if m.TimeZone == "" { // m.TimeZone = "Asia/Shanghai" } if m.Port == 0 { m.Port = 5432 } if m.Schema == "" { m.Schema = "public" } } func (m *Config) EmptyDsn() string { // 基本 DSN // dsnTpl := "host=%s user=%s password=%s port=%d dbname=%s sslmode=%s TimeZone=%s" // m.checkDefault() // base := fmt.Sprintf(dsnTpl, m.Host, m.Username, m.Password, m.Port, m.Database, m.SslMode, m.TimeZone) dsnTpl := "host=%s user=%s password=%s port=%d dbname=%s sslmode=%s" m.checkDefault() base := fmt.Sprintf(dsnTpl, m.Host, m.Username, m.Password, m.Port, m.Database, m.SslMode) // 附加可选参数 extras := "" if m.UseSearchPath && m.Schema != "" { extras += " search_path=" + m.Schema } if m.ApplicationName != "" { extras += " application_name=" + strconv.Quote(m.ApplicationName) } return base + extras } // DSN connection dsn func (m *Config) DSN() string { // 基本 DSN dsnTpl := "host=%s user=%s password=%s dbname=%s port=%d sslmode=%s" m.checkDefault() base := fmt.Sprintf(dsnTpl, m.Host, m.Username, m.Password, m.Database, m.Port, m.SslMode) // 附加可选参数 extras := "" if m.UseSearchPath && m.Schema != "" { extras += " search_path=" + m.Schema } if m.ApplicationName != "" { extras += " application_name=" + strconv.Quote(m.ApplicationName) } return base + extras }