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package engines |
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import ( |
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"database/sql" |
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"database/sql/driver" |
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"fmt" |
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adapter "github.com/cdleo/go-sql-adapter" |
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"github.com/cdleo/go-commons/sqlcommons" |
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"github.com/lib/pq" |
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) |
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type pgSqlConn struct { |
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url string |
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user string |
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password string |
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database string |
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} |
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const postgresql_DriverName = "postgres" |
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func NewPostgreSqlConnector(host string, port int, user string, password string, database string) adapter.SQLEngineConnector { |
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return &pgSqlConn{ |
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url: fmt.Sprintf("%s:%d", host, port), |
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user: user, |
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password: password, |
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database: database, |
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} |
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} |
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func (s *pgSqlConn) Open() (*sql.DB, error) { |
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dataSourceName := fmt.Sprintf("postgres://%s:%s@%s/%s?sslmode=disable", s.user, s.password, s.url, s.database) |
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return sql.Open(postgresql_DriverName, dataSourceName) |
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} |
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func (s *pgSqlConn) DriverName() string { |
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return postgresql_DriverName |
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} |
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func (s *pgSqlConn) Driver() driver.Driver { |
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if conn, err := pq.NewConnector("postgres://"); err == nil { |
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return conn.Driver() |
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} |
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return nil |
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} |
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func (s *pgSqlConn) ErrorHandler(err error) error { |
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if err == nil { |
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return nil |
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} |
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if pqError, ok := err.(*pq.Error); ok { |
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switch pqError.Code { |
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case "23505": |
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return sqlcommons.UniqueConstraintViolation |
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case "23503": |
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return sqlcommons.IntegrityConstraintViolation |
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case "22001": |
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return sqlcommons.ValueTooLargeForColumn |
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case "22003": |
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return sqlcommons.ValueLargerThanPrecision |
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case "23502": |
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return sqlcommons.CannotSetNullColumn |
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case "22P02": |
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return sqlcommons.InvalidNumericValue |
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case "21000": |
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return sqlcommons.SubqueryReturnsMoreThanOneRow |
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default: |
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return fmt.Errorf("Unhandled PostgreSQL error. Code:[%s] Desc:[%s]", pqError.Code, pqError.Message) |
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} |
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} else { |
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return err |
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} |
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} |
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cdleo /
go-sql-adapter
