74 lines
1.7 KiB
Markdown
74 lines
1.7 KiB
Markdown
# micro-wrapper-sql
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Example for For postgres
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```go
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package storage
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import (
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"fmt"
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"net/url"
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"time"
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"github.com/jackc/pgx/v4"
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"github.com/jackc/pgx/v4/stdlib"
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"github.com/jmoiron/sqlx"
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wrapper "go.unistack.org/micro-wrapper-sql/v3"
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)
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func Connect(cfg *PostgresConfig) (*sqlx.DB, error) {
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// format connection string
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cstr := fmt.Sprintf(
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"postgres://%s:%s@%s/%s?sslmode=disable&statement_cache_mode=describe",
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cfg.Login,
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url.QueryEscape(cfg.Passw),
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cfg.Addr,
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cfg.DBName,
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)
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// parse connection string
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dbConf, err := pgx.ParseConfig(cstr)
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if err != nil {
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return nil, err
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}
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// needed for pgbouncer
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dbConf.RuntimeParams = map[string]string{
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"standard_conforming_strings": "on",
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"application_name": cfg.AppName,
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}
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// may be needed for pbbouncer, needs to check
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// dbConf.PreferSimpleProtocol = true
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// register pgx conn
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dsn := stdlib.RegisterConnConfig(dbConf)
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wrapper.DefaultMeterStatsInterval = 1 * time.Second
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logger.DefaultLogger = logger.NewLogger(logger.WithLevel(logger.DebugLevel))
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if err := logger.DefaultLogger.Init(); err != nil {
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t.Fatal(err)
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}
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sql.Register("micro-wrapper-sql", wrapper.NewWrapper(&sqlite.Driver{},
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wrapper.DatabaseHost("localhost"),
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wrapper.DatabaseName("mydb"),
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wrapper.LoggerLevel(logger.DebugLevel),
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wrapper.LoggerEnabled(true),
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))
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wdb, err := sql.Open("micro-wrapper-sql", dsn)
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if err != nil {
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return nil, err
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}
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db := sqlx.NewDb(wdb, "pgx")
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db.SetMaxOpenConns(int(cfg.ConnMax))
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db.SetMaxIdleConns(int(cfg.ConnMaxIdle))
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db.SetConnMaxLifetime(time.Duration(cfg.ConnLifetime) * time.Second)
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db.SetConnMaxIdleTime(time.Duration(cfg.ConnMaxIdleTime) * time.Second)
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return db, nil
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}
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```
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