# Custom Class ## Custom authentication 
package com.xnarum.custom;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import org.apache.commons.codec.binary.Base64;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;

import lombok.extern.slf4j.Slf4j;

@Slf4j
public class MyAuthenticator {

```
public List execute(HashMap map, String id, String password, String authUrl) throws Exception {
    ArrayList rtn = new ArrayList();
        
        
    rtn.add(new BasicNameValuePair("X-Auth-Token", getToken(id, password, authUrl)));
    return rtn;
}
            
public String getToken(String id, String password, String url) throws Exception {
                
    return new String(Base64.encodeBase64(String.format("%s.%s", id, password).getBytes()));
}
        
```

}
## Mapping Function 
import com.ism.common.exception.ErrorCode;
import com.ism.transformer.converter.IConverter;
import com.ism.transformer.converter.IConverterListener;
import com.ism.transformer.converter.IConverterLocker;
import com.ism.transformer.exception.ConvertException;

import lombok.extern.slf4j.Slf4j;

@Slf4j
public class ToLower implements IConverter {

```
@Override
public void initialize(IConverterLocker converterlocker,
		IConverterListener converterlistener) {
	// TODO Auto-generated method stub

}

@Override
public Object execute(Object[] inputs) throws ConvertException {
	// TODO Auto-generated method stub
	
	if ( inputs == null || inputs.length < 1 ) {
		throw new ConvertException( ErrorCode.TRNS_CUSTOMFUNCTION_CONVERT_FAIL, "Not enough parameters. 1 parameter is required.");
	}
	String input = inputs[0].toString();
	String lower = input.toLowerCase();
	log.info("Converted input {} to {}", input, lower);
	return lower;
}

@Override
public void terminate() {
	// TODO Auto-generated method stub

}
```

}