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/*******************************************************************************
* Copyright 2016-2017 ZTE, Inc. and others.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
******************************************************************************/
package org.onap.msb.apiroute.health;
import org.apache.commons.lang3.StringUtils;
import org.onap.msb.apiroute.ApiRouteApp;
import org.onap.msb.apiroute.wrapper.InitRouteServiceWrapper;
import org.onap.msb.apiroute.wrapper.util.ConfigUtil;
import org.onap.msb.apiroute.wrapper.util.HttpClientUtil;
import org.onap.msb.apiroute.wrapper.util.HttpGetResult;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.codahale.metrics.health.HealthCheck;
public class ConsulLinkHealthCheck extends HealthCheck implements Runnable {
private static final Logger LOGGER = LoggerFactory
.getLogger(ConsulLinkHealthCheck.class);
private final static String CONSUL_IP_ENV = ConfigUtil.getInstance().getConsul_ip();
private static int failedLoopCheckNum = 12;
private static int failedTimer = 5 * 1000;
private static int normalTimer = 20 * 1000;
private static Result result = Result.healthy();
private String CHECK_IP = "127.0.0.1";
private String CHECK_PORT = "8500";
private String CHECK_URL = "http://" + CHECK_IP + ":" + CHECK_PORT
+ "/v1/status/leader";
public static Result getResult() {
return result;
}
@Override
protected Result check() {
// TODO Auto-generated method stub
if (!StringUtils.isBlank(CONSUL_IP_ENV)) {
CHECK_IP = CONSUL_IP_ENV;
CHECK_URL = "http://" + CHECK_IP + ":" + CHECK_PORT
+ "/v1/status/leader";
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("check consul URL:" + CHECK_URL);
}
try {
HttpGetResult result = HttpClientUtil
.httpGetStatusAndBody(CHECK_URL);
//response format:"127.0.0.1:8300"
if (result.getStatusCode() == 200 && result.getBody() != null
&& result.getBody().contains(":8300")) {
return Result.healthy();
} else {
return Result.unhealthy("check consul link " + CHECK_URL
+ " fail:" + result.getStatusCode()+":"+result.getBody());
}
} catch (Exception e) {
LOGGER.warn(
"ConsulLinkHealthCheck:" + CHECK_URL + " execption", e);
return Result.unhealthy("check consul link " + CHECK_URL
+ " exception:{}");
}
}
return Result.healthy();
}
@Override
public void run() {
// TODO Auto-generated method stub
while (true) {
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("consul link check starttime:"
+ System.currentTimeMillis());
}
result = checkWithPolicy();
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("consul link check result:" + result.isHealthy()
+ " message:" + result.getMessage());
LOGGER.debug("consul link check endtime:"
+ System.currentTimeMillis());
}
try {
Thread.sleep(normalTimer);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
LOGGER.warn("loop check consul,thread sleep excepiton", e);
}
}
}
private Result checkWithPolicy() {
int failedNum = 0;
Result temp = Result.healthy();
do {
// check again
temp = check();
// healthy break;
if (temp.isHealthy()) {
break;
}
// unhealthy go on
failedNum++;
try {
Thread.sleep(failedTimer);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
LOGGER.warn("loop check consul,thread sleep excepiton", e);
}
} while (failedNum <= failedLoopCheckNum);
return temp;
}
}
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