/*
    * Copyright (c) 2015 Cisco Systems, Inc.  All rights reserved.
    *
    * This program and the accompanying materials are made available under the
    * terms of the Eclipse Public License v1.0 which accompanies this distribution,
    * and is available at http://www.eclipse.org/legal/epl-v10.html
    */
   package org.opendaylight.lispflowmapping.southbound;
   
  import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.MessageType;
  
  /**
   * Object to hold statistics about LISP southbound events
   *
   * @author Lorand Jakab
   *
   */
  public class LispSouthboundStats {
      public final static int MAX_LISP_TYPES = getMaxMessageTypeValue();
  
      private long rx[] = new long[MAX_LISP_TYPES + 1];
      private long tx[] = new long[MAX_LISP_TYPES + 1];
      private long rxUnknown = 0;
      private long txErrors = 0;
  
      public LispSouthboundStats() {
          resetStats();
      }
  
      public void resetStats() {
          for (int i = 0; i <= MAX_LISP_TYPES; i++) {
              rx[i] = 0;
              tx[i] = 0;
          }
      }
  
      public long[] getRx() {
          return rx;
      }
  
      public void incrementRx(int type) {
          this.rx[type] = incrementWithWrap(rx[type]);
      }
  
      public long[] getTx() {
          return tx;
      }
  
      public void incrementTx(int type) {
          this.tx[type] = incrementWithWrap(tx[type]);
      }
  
      public long getRxUnknown() {
          return rxUnknown;
      }
  
      public void incrementRxUnknown() {
          this.rxUnknown = incrementWithWrap(rxUnknown);
      }
  
      public long getTxErrors() {
          return txErrors;
      }
  
      public void incrementTxErrors() {
          this.txErrors = incrementWithWrap(txErrors);
      }
  
      private static long incrementWithWrap(long value) {
          if (value == Long.MAX_VALUE) {
              return 0;
          } else {
              return value + 1;
          }
      }
  
      // TODO move this method to the appropriate helper class if we start using MessageType in other places
      public static int getMaxMessageTypeValue() {
          int max = 0;
          for (MessageType mt : MessageType.values()) {
              if (mt.getIntValue() > max) {
                  max = mt.getIntValue();
              }
          }
          return max;
      }
  }