/
AbstractDistributeOnceElasticJobListener.java
176 lines (155 loc) · 7.41 KB
/
AbstractDistributeOnceElasticJobListener.java
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
176
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.shardingsphere.elasticjob.lite.api.listener;
import lombok.Getter;
import org.apache.shardingsphere.elasticjob.infra.concurrent.BlockUtils;
import org.apache.shardingsphere.elasticjob.infra.env.TimeService;
import org.apache.shardingsphere.elasticjob.infra.exception.JobSystemException;
import org.apache.shardingsphere.elasticjob.infra.listener.ElasticJobListener;
import org.apache.shardingsphere.elasticjob.infra.listener.ShardingContexts;
import org.apache.shardingsphere.elasticjob.lite.internal.guarantee.GuaranteeService;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
/**
* Distributed once elasticjob listener.
*/
public abstract class AbstractDistributeOnceElasticJobListener implements ElasticJobListener {
private final ConcurrentMap<String, DistributeOnceListenerContext> listenerContexts = new ConcurrentHashMap<>();
private final TimeService timeService = new TimeService();
/**
* Add guarantee service for specific job.
*
* @param guaranteeService guarantee service
* @param jobName job name
* @param startedTimeoutMilliseconds started timeout milliseconds
* @param completedTimeoutMilliseconds completed timeout milliseconds
*/
public void addGuaranteeService(final GuaranteeService guaranteeService, final String jobName, final long startedTimeoutMilliseconds, final long completedTimeoutMilliseconds) {
listenerContexts.computeIfAbsent(jobName, unused -> new DistributeOnceListenerContext(startedTimeoutMilliseconds, completedTimeoutMilliseconds, guaranteeService));
}
@Override
public final void beforeJobExecuted(final ShardingContexts shardingContexts) {
DistributeOnceListenerContext context = listenerContexts.get(shardingContexts.getJobName());
GuaranteeService guaranteeService = context.getGuaranteeService();
Set<Integer> shardingItems = shardingContexts.getShardingItemParameters().keySet();
guaranteeService.registerStart(shardingItems);
while (!guaranteeService.isRegisterStartSuccess(shardingItems)) {
BlockUtils.waitingShortTime();
}
if (guaranteeService.isAllStarted()) {
doBeforeJobExecutedAtLastStarted(shardingContexts);
guaranteeService.clearAllStartedInfo();
return;
}
long before = timeService.getCurrentMillis();
long startedTimeoutMilliseconds = context.getStartedTimeoutMilliseconds();
try {
Object startedWait = context.getStartedWait();
synchronized (startedWait) {
startedWait.wait(startedTimeoutMilliseconds);
}
} catch (final InterruptedException ex) {
Thread.interrupted();
}
if (timeService.getCurrentMillis() - before >= startedTimeoutMilliseconds) {
guaranteeService.clearAllStartedInfo();
handleTimeout(startedTimeoutMilliseconds);
}
}
@Override
public final void afterJobExecuted(final ShardingContexts shardingContexts) {
DistributeOnceListenerContext context = listenerContexts.get(shardingContexts.getJobName());
GuaranteeService guaranteeService = context.getGuaranteeService();
Set<Integer> shardingItems = shardingContexts.getShardingItemParameters().keySet();
guaranteeService.registerComplete(shardingItems);
while (!guaranteeService.isRegisterCompleteSuccess(shardingItems)) {
BlockUtils.waitingShortTime();
}
if (guaranteeService.isAllCompleted()) {
doAfterJobExecutedAtLastCompleted(shardingContexts);
guaranteeService.clearAllCompletedInfo();
return;
}
long before = timeService.getCurrentMillis();
long completedTimeoutMilliseconds = context.getCompletedTimeoutMilliseconds();
try {
Object completedWait = context.getCompletedWait();
synchronized (completedWait) {
completedWait.wait(completedTimeoutMilliseconds);
}
} catch (final InterruptedException ex) {
Thread.interrupted();
}
if (timeService.getCurrentMillis() - before >= completedTimeoutMilliseconds) {
guaranteeService.clearAllCompletedInfo();
handleTimeout(completedTimeoutMilliseconds);
}
}
private void handleTimeout(final long timeoutMilliseconds) {
throw new JobSystemException("Job timeout. timeout mills is %s.", timeoutMilliseconds);
}
/**
* Do before job executed at last sharding job started.
*
* @param shardingContexts sharding contexts
*/
public abstract void doBeforeJobExecutedAtLastStarted(ShardingContexts shardingContexts);
/**
* Do after job executed at last sharding job completed.
*
* @param shardingContexts sharding contexts
*/
public abstract void doAfterJobExecutedAtLastCompleted(ShardingContexts shardingContexts);
/**
* Notify waiting task start.
*
* @param jobName job name
*/
public void notifyWaitingTaskStart(final String jobName) {
DistributeOnceListenerContext context = listenerContexts.get(jobName);
Object startedWait = context.getStartedWait();
synchronized (startedWait) {
startedWait.notifyAll();
}
}
/**
* Notify waiting task complete.
*
* @param jobName job name
*/
public void notifyWaitingTaskComplete(final String jobName) {
DistributeOnceListenerContext context = listenerContexts.get(jobName);
Object completedWait = context.getCompletedWait();
synchronized (completedWait) {
completedWait.notifyAll();
}
}
@Getter
private static class DistributeOnceListenerContext {
private final long startedTimeoutMilliseconds;
private final Object startedWait = new Object();
private final long completedTimeoutMilliseconds;
private final Object completedWait = new Object();
private final GuaranteeService guaranteeService;
DistributeOnceListenerContext(final long startedTimeoutMilliseconds, final long completedTimeoutMilliseconds, final GuaranteeService guaranteeService) {
this.startedTimeoutMilliseconds = startedTimeoutMilliseconds <= 0L ? Long.MAX_VALUE : startedTimeoutMilliseconds;
this.completedTimeoutMilliseconds = completedTimeoutMilliseconds <= 0L ? Long.MAX_VALUE : completedTimeoutMilliseconds;
this.guaranteeService = guaranteeService;
}
}
}