func (i *Installer) createMySQLInstance(dsn mysql.DSN) (*proto.MySQLInstance, error) {
// First use instance.Manager to fill in details about the MySQL server.
dsnString, _ := dsn.DSN()
mi := &proto.MySQLInstance{
Hostname: i.hostname,
DSN: dsnString,
}
if err := instance.GetMySQLInfo(mi); err != nil {
if i.flags["debug"] {
log.Printf("err=%s\n", err)
}
return nil, err
}
// POST <api>/instances/mysql
data, err := json.Marshal(mi)
if err != nil {
return nil, err
}
url := pct.URL(i.agentConfig.ApiHostname, "instances", "mysql")
if i.flags["debug"] {
log.Println(url)
}
resp, _, err := i.api.Post(i.agentConfig.ApiKey, url, data)
if i.flags["debug"] {
log.Printf("resp=%#v\n", resp)
log.Printf("err=%s\n", err)
}
if err != nil {
return nil, err
}
// Create new instance, if it already exist then just use it
// todo: better handling of duplicate instance
if resp.StatusCode != http.StatusCreated && resp.StatusCode != http.StatusConflict {
return nil, fmt.Errorf("Failed to create MySQL instance (status code %d)", resp.StatusCode)
}
// API returns URI of new resource in Location header
uri := resp.Header.Get("Location")
if uri == "" {
return nil, fmt.Errorf("API did not return location of new MySQL instance")
}
// GET <api>/instances/mysql/id (URI)
code, data, err := i.api.Get(i.agentConfig.ApiKey, uri)
if i.flags["debug"] {
log.Printf("code=%d\n", code)
log.Printf("err=%s\n", err)
}
if err != nil {
return nil, err
}
if code != http.StatusOK {
return nil, fmt.Errorf("Failed to get new MySQL instance (status code %d)", code)
}
if err := json.Unmarshal(data, mi); err != nil {
return nil, err
}
return mi, nil
}
func TestMySQLConnection(dsn mysql.DSN) error {
dsnString, err := dsn.DSN()
if err != nil {
return err
}
fmt.Printf("Testing MySQL connection %s...\n", dsn)
conn := mysql.NewConnection(dsnString)
if err := conn.Connect(1); err != nil {
return err
}
defer conn.Close()
return nil
}
func (i *Installer) verifyMySQLConnection(dsn mysql.DSN) (err error) {
dsnString, err := dsn.DSN()
if err != nil {
return err
}
if i.flags.Bool["debug"] {
log.Printf("verifyMySQLConnection: %#v %s\n", dsn, dsnString)
}
conn := mysql.NewConnection(dsnString)
if err := conn.Connect(1); err != nil {
return err
}
conn.Close()
return nil
}
func (s *DSNTestSuite) TestAllFields(t *C) {
dsn := mysql.DSN{
Username: "******",
Password: "******",
Hostname: "host.example.com",
Port: "3306",
}
str, err := dsn.DSN()
t.Check(err, IsNil)
t.Check(str, Equals, "user:pass@tcp(host.example.com:3306)/?parseTime=true")
// Stringify DSN removes password, e.g. makes it safe to print log, etc.
str = fmt.Sprintf("%s", dsn)
t.Check(str, Equals, "user:<password-hidden>@tcp(host.example.com:3306)")
}
func ParsePTAgentConf(content string, agent *agent.Config, dsn *mysql.DSN) (string, error) {
libDir := ""
if content == "" {
return libDir, nil
}
libDirRe := regexp.MustCompile(`lib\s*=(\S+)`)
m := libDirRe.FindStringSubmatch(content)
if len(m) > 1 {
libDir = m[1]
fmt.Printf("pt-agent lib dir: %s\n", libDir)
}
apiKeyRe := regexp.MustCompile(`^\s*api-key\s*=(\S+)`)
m = apiKeyRe.FindStringSubmatch(content)
if len(m) > 1 {
agent.ApiKey = m[1]
fmt.Printf("pt-agent API key: %s\n", agent.ApiKey)
}
socketRe := regexp.MustCompile(`socket\s*=(\S+)`)
m = socketRe.FindStringSubmatch(content)
if len(m) > 1 {
dsn.Socket = m[1]
fmt.Printf("pt-agent socket: %s\n", dsn.Socket)
}
return libDir, nil
}
func ParseMyCnf(content string, dsn *mysql.DSN) error {
if content == "" {
return nil
}
userRe := regexp.MustCompile(`(?m)^user\s*=(\S+)`)
m := userRe.FindStringSubmatch(content)
if len(m) > 1 {
dsn.Username = m[1]
fmt.Printf("pt-agent MySQL user: %s\n", dsn.Username)
}
passRe := regexp.MustCompile(`(?m)^\s*pass\s*=(\S+)`)
m = passRe.FindStringSubmatch(content)
if len(m) > 1 {
dsn.Password = m[1]
fmt.Printf("pt-agent MySQL user pass: %s\n", dsn.Password)
}
return nil
}
func (i *Installer) createMySQLUser(dsn mysql.DSN) (mysql.DSN, error) {
// Same host:port or socket, but different user and pass.
userDSN := dsn
userDSN.Username = "******"
userDSN.Password = fmt.Sprintf("%p%d", &dsn, rand.Uint32())
userDSN.OldPasswords = i.flags.Bool["old-passwords"]
dsnString, _ := dsn.DSN()
conn := mysql.NewConnection(dsnString)
if err := conn.Connect(1); err != nil {
return userDSN, err
}
defer conn.Close()
grants := MakeGrant(dsn, userDSN.Username, userDSN.Password, i.flags.Int64["mysql-max-user-connections"])
for _, grant := range grants {
if i.flags.Bool["debug"] {
log.Println(grant)
}
_, err := conn.DB().Exec(grant)
if err != nil {
return userDSN, fmt.Errorf("Error executing %s: %s", grant, err)
}
}
// Go MySQL driver resolves localhost to 127.0.0.1 but localhost is a special
// value for MySQL, so 127.0.0.1 may not work with a grant @localhost, so we
// add a 2nd grant @127.0.0.1 to be sure.
if dsn.Hostname == "localhost" {
dsn2 := dsn
dsn2.Hostname = "127.0.0.1"
grants := MakeGrant(dsn2, userDSN.Username, userDSN.Password, i.flags.Int64["mysql-max-user-connections"])
for _, grant := range grants {
if i.flags.Bool["debug"] {
log.Println(grant)
}
_, err := conn.DB().Exec(grant)
if err != nil {
return userDSN, fmt.Errorf("Error executing %s: %s", grant, err)
}
}
}
return userDSN, nil
}
func (i *Installer) getDSNFromUser(dsn *mysql.DSN) error {
// Ask for username
username, err := i.term.PromptString("MySQL username", dsn.Username)
if err != nil {
return err
}
dsn.Username = username
// Ask for password
var password string
if i.flags.Bool["plain-passwords"] {
password, err = i.term.PromptString("MySQL password", "")
} else {
password, err = gopass.GetPass("MySQL password: "******"MySQL host[:port] or socket file",
dsn.To(),
)
if err != nil {
return err
}
if filepath.IsAbs(hostname) {
dsn.Socket = hostname
dsn.Hostname = ""
} else {
f := strings.Split(hostname, ":")
dsn.Hostname = f[0]
if len(f) > 1 {
dsn.Port = f[1]
} else {
dsn.Port = "3306"
}
dsn.Socket = ""
}
return nil
}
func (i *Installer) autodetectDSN(dsn *mysql.DSN) error {
params := []string{}
if i.flags.String["mysql-defaults-file"] != "" {
params = append(params, "--defaults-file="+i.flags.String["mysql-defaults-file"])
}
// --print-defaults needs to be last param
params = append(params, "--print-defaults")
cmd := exec.Command("mysql", params...)
byteOutput, err := cmd.Output()
if err != nil {
return err
}
output := string(byteOutput)
if i.flags.Bool["debug"] {
log.Println(output)
}
autoDSN := ParseMySQLDefaults(output)
if i.flags.Bool["debug"] {
log.Printf("autoDSN: %#v\n", autoDSN)
}
// Fill in the given DSN with auto-detected options.
if dsn.Username == "" {
dsn.Username = autoDSN.Username
}
if dsn.Password == "" {
dsn.Password = autoDSN.Password
}
if dsn.Hostname == "" {
dsn.Hostname = autoDSN.Hostname
}
if dsn.Port == "" {
dsn.Port = autoDSN.Port
}
if dsn.Socket == "" {
dsn.Socket = autoDSN.Socket
}
if dsn.Username == "" {
user, err := user.Current()
if err == nil {
dsn.Username = user.Username
}
}
if i.flags.Bool["debug"] {
log.Printf("dsn: %#v\n", dsn)
}
return nil
}
func (s *MySQLTestSuite) TestMakeGrant(t *C) {
user := "******"
pass := "******"
dsn := mysql.DSN{
Username: "******",
Password: "******",
}
dsn.Hostname = "localhost"
maxOpenConnections := int64(1)
got := i.MakeGrant(dsn, user, pass, maxOpenConnections)
expect := []string{
"SET SESSION old_passwords=0",
"GRANT SUPER, PROCESS, USAGE, SELECT ON *.* TO 'new-user'@'localhost' IDENTIFIED BY 'some pass' WITH MAX_USER_CONNECTIONS 1",
"GRANT UPDATE, DELETE, DROP ON performance_schema.* TO 'new-user'@'localhost' IDENTIFIED BY 'some pass' WITH MAX_USER_CONNECTIONS 1",
}
t.Check(got, DeepEquals, expect)
dsn.Hostname = "127.0.0.1"
got = i.MakeGrant(dsn, user, pass, maxOpenConnections)
expect = []string{
"SET SESSION old_passwords=0",
"GRANT SUPER, PROCESS, USAGE, SELECT ON *.* TO 'new-user'@'127.0.0.1' IDENTIFIED BY 'some pass' WITH MAX_USER_CONNECTIONS 1",
"GRANT UPDATE, DELETE, DROP ON performance_schema.* TO 'new-user'@'127.0.0.1' IDENTIFIED BY 'some pass' WITH MAX_USER_CONNECTIONS 1",
}
t.Check(got, DeepEquals, expect)
dsn.Hostname = "10.1.1.1"
got = i.MakeGrant(dsn, user, pass, maxOpenConnections)
expect = []string{
"SET SESSION old_passwords=0",
"GRANT SUPER, PROCESS, USAGE, SELECT ON *.* TO 'new-user'@'%' IDENTIFIED BY 'some pass' WITH MAX_USER_CONNECTIONS 1",
"GRANT UPDATE, DELETE, DROP ON performance_schema.* TO 'new-user'@'%' IDENTIFIED BY 'some pass' WITH MAX_USER_CONNECTIONS 1",
}
t.Check(got, DeepEquals, expect)
dsn.Hostname = ""
dsn.Socket = "/var/lib/mysql.sock"
got = i.MakeGrant(dsn, user, pass, maxOpenConnections)
expect = []string{
"SET SESSION old_passwords=0",
"GRANT SUPER, PROCESS, USAGE, SELECT ON *.* TO 'new-user'@'localhost' IDENTIFIED BY 'some pass' WITH MAX_USER_CONNECTIONS 1",
"GRANT UPDATE, DELETE, DROP ON performance_schema.* TO 'new-user'@'localhost' IDENTIFIED BY 'some pass' WITH MAX_USER_CONNECTIONS 1",
}
t.Check(got, DeepEquals, expect)
}
func (s *MySQLTestSuite) TestMakeGrant(t *C) {
user := "******"
pass := "******"
dsn := mysql.DSN{
Username: "******",
Password: "******",
}
dsn.Hostname = "localhost"
t.Check(i.MakeGrant(dsn, user, pass), Equals, "GRANT SUPER, PROCESS, USAGE ON *.* TO 'new-user'@'localhost' IDENTIFIED BY 'some pass'")
dsn.Hostname = "127.0.0.1"
t.Check(i.MakeGrant(dsn, user, pass), Equals, "GRANT SUPER, PROCESS, USAGE ON *.* TO 'new-user'@'127.0.0.1' IDENTIFIED BY 'some pass'")
dsn.Hostname = "10.1.1.1"
t.Check(i.MakeGrant(dsn, user, pass), Equals, "GRANT SUPER, PROCESS, USAGE ON *.* TO 'new-user'@'%' IDENTIFIED BY 'some pass'")
dsn.Hostname = ""
dsn.Socket = "/var/lib/mysql.sock"
t.Check(i.MakeGrant(dsn, user, pass), Equals, "GRANT SUPER, PROCESS, USAGE ON *.* TO 'new-user'@'localhost' IDENTIFIED BY 'some pass'")
}
func (i *Installer) connectMySQL(def *mysql.DSN, creating bool) (mysql.DSN, error) {
dsn := mysql.DSN{}
if creating {
fmt.Println("Specify a root/super MySQL user to create a user for the agent")
} else if def != nil {
fmt.Println("Verify the existing MySQL user to use for the agent")
dsn = *def
if dsn.Username == "" {
user, _ := user.Current()
if user != nil {
dsn.Username = user.Username
}
}
} else {
fmt.Println("Specify an existing MySQL user to use for the agent")
}
CONNECT_MYSQL:
for {
username, err := i.term.PromptStringRequired("MySQL username", dsn.Username)
if err != nil {
return dsn, err
}
dsn.Username = username
var password string
if creating {
password, err = gopass.GetPass("MySQL password: "******"MySQL password", dsn.Password)
}
if err != nil {
return dsn, err
}
dsn.Password = password
hostname, err := i.term.PromptStringRequired("MySQL host[:port] or socket file", dsn.To())
if err != nil {
return dsn, err
}
if filepath.IsAbs(hostname) {
dsn.Socket = hostname
dsn.Hostname = ""
} else {
f := strings.Split(hostname, ":")
dsn.Hostname = f[0]
if len(f) > 1 {
dsn.Port = f[1]
} else {
dsn.Port = "3306"
}
dsn.Socket = ""
}
if err := TestMySQLConnection(dsn); err != nil {
fmt.Printf("Error connecting to MySQL %s: %s\n", dsn, err)
again, err := i.term.PromptBool("Try again?", "Y")
if err != nil {
return dsn, err
}
if !again {
return dsn, fmt.Errorf("Failed to connect to MySQL")
}
continue CONNECT_MYSQL
}
fmt.Printf("MySQL connection OK\n")
break
}
return dsn, nil
}