63 lines
1.7 KiB
Java
63 lines
1.7 KiB
Java
|
package protocolP2P;
|
||
|
|
import protocolP2P.CodeType;
|
||
|
|
import exception.ProtocolError;
|
||
|
|
import java.util.HashMap;
|
||
|
|
import java.util.Map;
|
||
|
|
import java.lang.Byte;
|
||
|
|
|
||
|
|
/** Request/Response code enum.
|
||
|
|
* @author Louis Royer
|
||
|
|
* @author Flavien Haas
|
||
|
|
* @author JS Auge
|
||
|
|
* @version 1.0
|
||
|
|
*/
|
||
|
|
public enum RequestResponseCode {
|
||
|
|
LIST_REQUEST(CodeType.REQUEST, (byte)0x00),
|
||
|
|
LOAD_REQUEST(CodeType.REQUEST, (byte)0x01),
|
||
|
|
LIST_RESPONSE(CodeType.RESPONSE, (byte)0x80),
|
||
|
|
LOAD_RESPONSE(CodeType.RESPONSE, (byte)0x81),
|
||
|
|
NOT_FOUND(CodeType.RESPONSE, (byte)0x82),
|
||
|
|
PROTOCOL_ERROR(CodeType.RESPONSE, (byte)0x83),
|
||
|
|
INTERNAL_ERROR(CodeType.RESPONSE, (byte)0x84);
|
||
|
|
|
||
|
|
public final CodeType codeType;
|
||
|
|
public final byte codeValue;
|
||
|
|
protected final static int RRCODE_POSITION = 1;
|
||
|
|
|
||
|
|
/* To be able to convert code to enum */
|
||
|
|
private static final Map<Byte, RequestResponseCode> BY_CODE = new HashMap<>();
|
||
|
|
/* Initialization of HashMap */
|
||
|
|
static {
|
||
|
|
for (RequestResponseCode r: values()) {
|
||
|
|
assert !BY_CODE.containsKey(Byte.valueOf(r.codeValue)) : "Duplicate in " + RequestResponseCode.class.getCanonicalName();
|
||
|
|
BY_CODE.put(Byte.valueOf(r.codeValue), r);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Private constructor
|
||
|
|
* @param codeType type of code (request or response)
|
||
|
|
* @param codeValue value of the element in datagram
|
||
|
|
* @return enum element
|
||
|
|
*/
|
||
|
|
private RequestResponseCode(CodeType codeType, byte codeValue) {
|
||
|
|
this.codeType = codeType;
|
||
|
|
this.codeValue = codeValue;
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Gives enum from datagram code.
|
||
|
|
* @param code value of the element in datagram
|
||
|
|
* @return enum element
|
||
|
|
*/
|
||
|
|
public static RequestResponseCode fromCode(byte code) throws ProtocolError {
|
||
|
|
byte code = BY_CODE.get(Byte.valueOf(code));
|
||
|
|
if (code == null) {
|
||
|
|
throw new ProtocolError();
|
||
|
|
}
|
||
|
|
return code;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|