How to load Rudder LDAP entries to validate #13256

Test13256.scala

package com.normation.rudder

import com.normation.ldap.sdk.LDAPEntry
import com.normation.ldap.sdk.RWPooledSimpleAuthConnectionProvider
import com.unboundid.ldap.sdk.Attribute
import com.unboundid.ldap.sdk.DN

/*
 * See:
 * https://www.rudder-project.org/redmine/issues/13256
 */

object LDAP {
  val con =
    new RWPooledSimpleAuthConnectionProvider(
      host = "localhost",
      port = 1389,
      authDn = "cn=Manager,cn=rudder-configuration",
      authPw = "secret",
      poolSize = 2
  )

  val dn = new DN("cn=Nodes Configuration,ou=Rudder,cn=rudder-configuration")
}

object NodesConfigurationErrorMain {


  def str(size: Int) = new String( Array.fill[Char](size)('x'))

  def main(args: Array[String]): Unit = {
    val entry = LDAPEntry(LDAP.dn)

    entry += new Attribute("objectClass", "top", "nodeConfigurations")
    entry += new Attribute("cn", "Nodes Configuration")

//here, with 454, we get:
//Failure(Can not save (add) 'cn=Nodes Configuration,ou=Rudder,cn=rudder-configuration': An error occurred while attempting to send the LDAP message to server localhost:1389:  SocketException(message='Socket closed', trace='socketWrite(SocketOutputStream.java:118) / write(SocketOutputStream.java:155) / write(BufferedOutputStream.java:122) / write(ByteStringBuffer.java:1664) ....
    val values = for(i <- 0 until 1024) yield i + "-"+str(1024*30)
    entry += new Attribute("nodeConfig", values:_*)
    println(for {
      ldap <- LDAP.con
      _ <- ldap.delete(LDAP.dn)
      _ <- ldap.save(entry)
    } yield {
      "done"
    })

  }
}

object TryGetBig {
  def main(args: Array[String]): Unit = {
    //System.setProperty("com.unboundid.ldap.sdk.LDAPConnectionOptions.defaultMaxMessageSizeBytes", "500")


    val res = for {
      ldap <- LDAP.con
      _ = ldap.backed.setConnectionOptions({
        val opt = ldap.backed.getConnectionOptions
        opt.setMaxMessageSize(10000)
        opt
      })
      _ <- ldap.get(LDAP.dn)
    } yield {
      "done"
    }
    println(res)
  }
}