Java app using MariaDB 2.1.2 driver fails to connect #4603
Comments
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Just to add a little bit more of detail to this issue, it breaks in this commit: fa42f53 Reproduction case: package main
import (
"crypto/sha1"
"encoding/hex"
"fmt"
"log"
"strings"
"time"
"vitess.io/vitess/go/mysql"
"vitess.io/vitess/go/sqltypes"
)
func main() {
auth := mysql.NewAuthServerStatic()
pwd := nativePassword("")
auth.Entries["root"] = []*mysql.AuthServerStaticEntry{{
MysqlNativePassword: pwd,
Password: pwd,
}}
l, err := mysql.NewListener("tcp", ":3306", auth, new(handler), 10*time.Minute, 10*time.Minute)
if err != nil {
log.Fatal(err)
}
l.Accept()
}
type handler struct{}
func (*handler) NewConnection(c *mysql.Conn) {
log.Println("CONNECTION OPENED")
}
func (*handler) ConnectionClosed(c *mysql.Conn) {
log.Println("CONNECTION CLOSED")
}
func (*handler) ComQuery(c *mysql.Conn, query string, callback func(*sqltypes.Result) error) error {
log.Println("QUERY: " + query)
return nil
}
func (*handler) WarningCount(c *mysql.Conn) uint16 { return 0 }
func nativePassword(password string) string {
if len(password) == 0 {
return ""
}
// native = sha1(sha1(password))
hash := sha1.New()
hash.Write([]byte(password))
s1 := hash.Sum(nil)
hash.Reset()
hash.Write(s1)
s2 := hash.Sum(nil)
s := strings.ToUpper(hex.EncodeToString(s2))
return fmt.Sprintf("*%s", s)
}Scala app to trigger this: import java.sql._
object Main extends App {
val connection = DriverManager.getConnection(
s"jdbc:mariadb://0.0.0.0:3306",
"root",
""
)
val stmt: PreparedStatement = connection.prepareStatement("SHOW TABLES")
val rs = stmt.executeQuery
rs.close()
stmt.close()
} |
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I believe it's because you're using the prepared statement protocol, which is not yet supported by vitess. |
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Exact same code switching MariaDB driver to MySQL driver works, so it must be something else.
…On 30 Apr 2019, 19:17 +0200, Sugu Sougoumarane ***@***.***>, wrote:
I believe it's because you're using the prepared statement protocol, which is not yet supported by vitess.
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|
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Yeah. This looks like a handshake error. We'll need to add some instrumentation here: https://github.com/vitessio/vitess/blob/master/go/mysql/server.go#L732. It's not receiving the number of bytes its' expecting. |
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#4897 seems to have fixed this specific problem; however, there are other issues with the mariadb connector, for which I will log a separate issue. |
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I'm trying to connect an off the shelf app (prisma.io) to Vitess, but it is failing on the client handshake. It is using
mariadb-java-client 2.1.2to connect. I'm not a Java user, so I don't know how to test/debug this any further.There is already interest in using Vitess with Prisma in this issue: prisma/prisma#2451
vtgate logs
Java client logs
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