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mysql_main_test.go.tpl
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mysql_main_test.go.tpl
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var rgxMySQLkey = regexp.MustCompile(`(?m)((,\n)?\s+CONSTRAINT.*?FOREIGN KEY.*?\n)+`)
type mysqlTester struct {
dbConn *sql.DB
dbName string
host string
user string
pass string
sslmode string
port int
optionFile string
testDBName string
skipSQLCmd bool
}
func init() {
dbMain = &mysqlTester{}
}
func (m *mysqlTester) setup() error {
var err error
viper.SetDefault("mysql.sslmode", "true")
viper.SetDefault("mysql.port", 3306)
m.dbName = viper.GetString("mysql.dbname")
m.host = viper.GetString("mysql.host")
m.user = viper.GetString("mysql.user")
m.pass = viper.GetString("mysql.pass")
m.port = viper.GetInt("mysql.port")
m.sslmode = viper.GetString("mysql.sslmode")
m.testDBName = viper.GetString("mysql.testdbname")
m.skipSQLCmd = viper.GetBool("mysql.skipsqlcmd")
err = vala.BeginValidation().Validate(
vala.StringNotEmpty(m.user, "mysql.user"),
vala.StringNotEmpty(m.host, "mysql.host"),
vala.Not(vala.Equals(m.port, 0, "mysql.port")),
vala.StringNotEmpty(m.dbName, "mysql.dbname"),
vala.StringNotEmpty(m.sslmode, "mysql.sslmode"),
).Check()
if err != nil {
return err
}
// Create a randomized db name.
if len(m.testDBName) == 0 {
m.testDBName = randomize.StableDBName(m.dbName)
}
if err = m.makeOptionFile(); err != nil {
return errors.Wrap(err, "couldn't make option file")
}
if !m.skipSQLCmd {
if err = m.dropTestDB(); err != nil {
return err
}
if err = m.createTestDB(); err != nil {
return err
}
dumpCmd := exec.Command("mysqldump", m.defaultsFile(), "--no-data", m.dbName)
createCmd := exec.Command("mysql", m.defaultsFile(), "--database", m.testDBName)
r, w := io.Pipe()
dumpCmdStderr := &bytes.Buffer{}
createCmdStderr := &bytes.Buffer{}
dumpCmd.Stdout = w
dumpCmd.Stderr = dumpCmdStderr
createCmd.Stdin = newFKeyDestroyer(rgxMySQLkey, r)
createCmd.Stderr = createCmdStderr
if err = dumpCmd.Start(); err != nil {
return errors.Wrap(err, "failed to start mysqldump command")
}
if err = createCmd.Start(); err != nil {
return errors.Wrap(err, "failed to start mysql command")
}
if err = dumpCmd.Wait(); err != nil {
fmt.Println(err)
fmt.Println(dumpCmdStderr.String())
return errors.Wrap(err, "failed to wait for mysqldump command")
}
_ = w.Close() // After dumpCmd is done, close the write end of the pipe
if err = createCmd.Wait(); err != nil {
fmt.Println(err)
fmt.Println(createCmdStderr.String())
return errors.Wrap(err, "failed to wait for mysql command")
}
}
return nil
}
func (m *mysqlTester) sslMode(mode string) string {
switch mode {
case "true":
return "REQUIRED"
case "false":
return "DISABLED"
case "PREFERRED":
return ""
default:
return mode
}
}
func (m *mysqlTester) defaultsFile() string {
return fmt.Sprintf("--defaults-file=%s", m.optionFile)
}
func (m *mysqlTester) makeOptionFile() error {
tmp, err := os.CreateTemp("", "optionfile")
if err != nil {
return errors.Wrap(err, "failed to create option file")
}
isTCP := false
_, err = os.Stat(m.host)
if os.IsNotExist(err) {
isTCP = true
} else if err != nil {
return errors.Wrap(err, "could not stat m.host")
}
fmt.Fprintln(tmp, "[client]")
fmt.Fprintf(tmp, "host=%s\n", m.host)
fmt.Fprintf(tmp, "port=%d\n", m.port)
fmt.Fprintf(tmp, "user=%s\n", m.user)
if len(m.pass) != 0 {
fmt.Fprintf(tmp, "password=%s\n", m.pass)
}
if mode := m.sslMode(m.sslmode); mode != "" {
fmt.Fprintf(tmp, "ssl-mode=%s\n", mode)
}
if isTCP {
fmt.Fprintln(tmp, "protocol=tcp")
}
fmt.Fprintln(tmp, "[mysqldump]")
fmt.Fprintf(tmp, "host=%s\n", m.host)
fmt.Fprintf(tmp, "port=%d\n", m.port)
fmt.Fprintf(tmp, "user=%s\n", m.user)
if len(m.pass) != 0 {
fmt.Fprintf(tmp, "password=%s\n", m.pass)
}
if mode := m.sslMode(m.sslmode); mode != "" {
fmt.Fprintf(tmp, "ssl-mode=%s\n", mode)
}
if isTCP {
fmt.Fprintln(tmp, "protocol=tcp")
}
m.optionFile = tmp.Name()
return tmp.Close()
}
func (m *mysqlTester) createTestDB() error {
sql := fmt.Sprintf("create database %s;", m.testDBName)
return m.runCmd(sql, "mysql")
}
func (m *mysqlTester) dropTestDB() error {
sql := fmt.Sprintf("drop database if exists %s;", m.testDBName)
return m.runCmd(sql, "mysql")
}
func (m *mysqlTester) teardown() error {
if m.dbConn != nil {
return m.dbConn.Close()
}
if !m.skipSQLCmd {
if err := m.dropTestDB(); err != nil {
return err
}
}
return os.Remove(m.optionFile)
}
func (m *mysqlTester) runCmd(stdin, command string, args ...string) error {
args = append([]string{m.defaultsFile()}, args...)
cmd := exec.Command(command, args...)
cmd.Stdin = strings.NewReader(stdin)
stdout := &bytes.Buffer{}
stderr := &bytes.Buffer{}
cmd.Stdout = stdout
cmd.Stderr = stderr
if err := cmd.Run(); err != nil {
fmt.Println("failed running:", command, args)
fmt.Println(stdout.String())
fmt.Println(stderr.String())
return err
}
return nil
}
func (m *mysqlTester) conn() (*sql.DB, error) {
if m.dbConn != nil {
return m.dbConn, nil
}
var err error
m.dbConn, err = sql.Open("mysql", driver.MySQLBuildQueryString(m.user, m.pass, m.testDBName, m.host, m.port, m.sslmode))
if err != nil {
return nil, err
}
return m.dbConn, nil
}