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vertica.go
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vertica.go
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// Package vertica defines and registers usql's Vertica driver.
//
// See: https://github.com/vertica/vertica-sql-go
package vertica
import (
"context"
"os"
"regexp"
"strings"
_ "github.com/vertica/vertica-sql-go" // DRIVER
"github.com/vertica/vertica-sql-go/logger"
"github.com/xo/usql/drivers"
)
func init() {
// turn off logging
if os.Getenv("VERTICA_SQL_GO_LOG_LEVEL") == "" {
logger.SetLogLevel(logger.NONE)
}
errCodeRE := regexp.MustCompile(`(?i)^\[([0-9a-z]+)\]\s+(.+)`)
drivers.Register("vertica", drivers.Driver{
AllowDollar: true,
AllowMultilineComments: true,
Version: func(ctx context.Context, db drivers.DB) (string, error) {
var ver string
if err := db.QueryRowContext(ctx, `SELECT version()`).Scan(&ver); err != nil {
return "", err
}
return ver, nil
},
ChangePassword: func(db drivers.DB, user, newpw, _ string) error {
_, err := db.Exec(`ALTER USER ` + user + ` IDENTIFIED BY '` + newpw + `'`)
return err
},
Err: func(err error) (string, string) {
msg := strings.TrimSpace(strings.TrimPrefix(err.Error(), "Error:"))
if m := errCodeRE.FindAllStringSubmatch(msg, -1); m != nil {
return m[0][1], strings.TrimSpace(m[0][2])
}
return "", msg
},
IsPasswordErr: func(err error) bool {
return strings.HasSuffix(strings.TrimSpace(err.Error()), "Invalid username or password")
},
})
}