2 * Copyright (c) 2016 Cisco and/or its affiliates.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package io.fd.honeycomb.translate.vpp.util;
19 import io.fd.honeycomb.translate.util.read.KeepaliveReaderWrapper;
20 import org.slf4j.Logger;
21 import org.slf4j.LoggerFactory;
24 * Listens to vpp status changes. Restarts honeycomb if vpp is down.
26 public final class VppStatusListener implements KeepaliveReaderWrapper.KeepaliveFailureListener {
29 * Value picked up by honeycomb start script, tigers honeycomb restart when returned by the java process
31 public static final int RESTART_ERROR_CODE = 100;
32 private static final Logger LOG = LoggerFactory.getLogger(VppStatusListener.class);
34 private volatile boolean down;
36 public boolean isDown() {
41 public void onKeepaliveFailure() {
42 LOG.error("Keepalive failed. VPP is probably DOWN! Restarting Honeycomb");
44 System.exit(RESTART_ERROR_CODE);