extractPwdFromJceks.scala

import org.apache.hadoop.conf.Configuration
import org.apache.hadoop.security.alias.CredentialProviderFactory
/**
Function to Retrieve the password from JCEKS file in Spark with Scala
Parameters: JCEKSFILE in hadoop path(jceksfile), Password alias for the jceks(password_alias)
Returns: Password string
**/
def extractPwdFromJceks(jceksfile:String, password_alias:String):String = {
  val conf:Configuration = new Configuration()
  conf.set(CredentialProviderFactory.CREDENTIAL_PROVIDER_PATH, jceksfile)
  
  val temp = conf.getPassword(password_alias).mkString("")
  var password = ""
  if (temp != null && !temp.isEmpty() && !temp.equalsIgnoreCase("")){
    password = temp
  }
  return password
}