1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/*******************************************************************************
* 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 java.text.SimpleDateFormat;
import org.onap.msb.apiroute.wrapper.util.JedisUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import redis.clients.jedis.Jedis;
import com.codahale.metrics.health.HealthCheck;
public class RedisHealthCheck extends HealthCheck implements Runnable {
private static final Logger LOGGER = LoggerFactory
.getLogger(RedisHealthCheck.class);
public static boolean writeCheckFlag = true;
private static Result result = Result.healthy();
private static int failedLoopCheckNum = 12;
private static int failedTimer = 5 * 1000;
private static int normalTimer = 20 * 1000;
public static Result getResult() {
return result;
}
@Override
protected Result check() {
// check write
if (writeCheckFlag) {
Result writeCheckResult = checkWrite();
if (writeCheckResult.isHealthy()) {
writeCheckFlag = false;
}
// write failed
if (!writeCheckResult.isHealthy()) {
return writeCheckResult;
}
}
// check read
Result readCheckResult = checkRead();
// read failed
if (!readCheckResult.isHealthy()) {
return readCheckResult;
}
return Result.healthy();
}
private Result checkRead() {
Jedis jedisHandle = null;
Result healthRst = Result.healthy();
try {
jedisHandle = JedisUtil.borrowJedisInstance();
jedisHandle.get("healthchek:checktime");
} catch (Exception e) {
LOGGER.warn("RedisHealthCheck exception", e);
healthRst = Result.unhealthy(e);
} finally {
JedisUtil.returnJedisInstance(jedisHandle);
}
return healthRst;
}
private Result checkWrite() {
Jedis jedisHandle = null;
Result healthRst = Result.healthy();
try {
long currentTime = System.currentTimeMillis();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String date = sdf.format(currentTime);
jedisHandle = JedisUtil.borrowJedisInstance();
String statusCode = jedisHandle.set("healthchek:checktime", date);
if (statusCode != null && statusCode.equals("OK")) {
healthRst = Result.healthy("check redis:" + statusCode);
} else {
healthRst = Result.unhealthy("check redis:" + statusCode);
}
} catch (Exception e) {
LOGGER.warn("RedisHealthCheck exception", e);
healthRst = Result.unhealthy(e);
} finally {
JedisUtil.returnJedisInstance(jedisHandle);
}
return healthRst;
}
@Override
public void run() {
// TODO Auto-generated method stub
while (true) {
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("redis check starttime:"
+ System.currentTimeMillis());
}
result = checkWithPolicy();
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("redis check result:" + result.isHealthy()
+ " message:" + result.getMessage());
LOGGER.debug("redis check endtime:"
+ System.currentTimeMillis());
}
try {
Thread.sleep(normalTimer);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
LOGGER.warn("loop check redis,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 redis,thread sleep excepiton", e);
}
} while (failedNum <= failedLoopCheckNum);
return temp;
}
}
|
