/
PurgeService.java
238 lines (192 loc) · 9.04 KB
/
PurgeService.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
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
/*
* SymmetricDS is an open source database synchronization solution.
*
* Copyright (C) Chris Henson <chenson42@users.sourceforge.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see
* <http://www.gnu.org/licenses/>.
*/
package org.jumpmind.symmetric.service.impl;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jumpmind.symmetric.db.IDbDialect;
import org.jumpmind.symmetric.service.IClusterService;
import org.jumpmind.symmetric.service.IPurgeService;
import org.jumpmind.symmetric.service.LockAction;
import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.ConnectionCallback;
import org.springframework.jdbc.support.JdbcUtils;
import org.springframework.transaction.TransactionStatus;
import org.springframework.transaction.support.TransactionCallback;
import org.springframework.transaction.support.TransactionTemplate;
public class PurgeService extends AbstractService implements IPurgeService {
private final static Log logger = LogFactory.getLog(PurgeService.class);
private static int NUMBER_DATA_IDS_TO_PURGE_IN_BATCH = 5000;
private IDbDialect dbDialect;
private String[] otherPurgeSql;
private int retentionInMinutes = 7200;
private String selectOutgoingBatchIdsToPurgeSql;
private String deleteFromOutgoingBatchHistSql;
private String deleteFromOutgoingBatchSql;
private String selectEventDataIdToPurgeSql;
private String deleteDataEventSql;
private String selectDataIdToPurgeSql;
private String deleteDataSql;
private TransactionTemplate transactionTemplate;
private IClusterService clusterService;
@SuppressWarnings("unchecked")
public void purge() {
if (clusterService.lock(LockAction.PURGE)) {
try {
logger.info("The purge process is about to run.");
Calendar calendar = Calendar.getInstance();
calendar.add(Calendar.MINUTE, -retentionInMinutes);
purgeBatchesOlderThan(calendar);
purgeDataRows();
for (String sql : otherPurgeSql) {
int count = jdbcTemplate.update(sql, new Object[] { calendar.getTime() });
if (count > 0) {
logger.info("Purged " + count + " rows after running: " + cleanSql(sql));
}
}
} finally {
clusterService.unlock(LockAction.PURGE);
logger.info("The purge process has completed.");
}
} else {
logger.info("Could not get a lock to run a purge.");
}
}
private void purgeDataRows() {
transactionTemplate.execute(new TransactionCallback() {
public Object doInTransaction(TransactionStatus s) {
int count = 0;
List<Integer> dataIds = null;
do {
dataIds = getNextDataIds(selectDataIdToPurgeSql, null, NUMBER_DATA_IDS_TO_PURGE_IN_BATCH);
for (Integer dataId : dataIds) {
count += jdbcTemplate.update(deleteDataSql, new Object[] { dataId });
}
} while (dataIds != null && dataIds.size() > 0);
if (count > 0) {
logger.info("Purged " + count + " data rows.");
}
return null;
}
});
}
@SuppressWarnings("unchecked")
private void purgeBatchesOlderThan(Calendar time) {
// Iterate over batch ids and data events to access by primary key so we prevent lock escalation
List<Integer> batchIds = jdbcTemplate.queryForList(selectOutgoingBatchIdsToPurgeSql, new Object[] { time
.getTime() }, Integer.class);
int batchCount = 0;
int eventRowCount = 0;
for (final Integer batchId : batchIds) {
batchCount++;
eventRowCount += (Integer) transactionTemplate.execute(new TransactionCallback() {
public Object doInTransaction(TransactionStatus s) {
jdbcTemplate.update(deleteFromOutgoingBatchHistSql, new Object[] { batchId });
int eventCount = 0;
List<Integer> dataIds = null;
do {
dataIds = getNextDataIds(selectEventDataIdToPurgeSql, new Object[] { batchId },
NUMBER_DATA_IDS_TO_PURGE_IN_BATCH);
for (Integer dataId : dataIds) {
eventCount += jdbcTemplate.update(deleteDataEventSql, new Object[] { dataId, batchId });
}
} while (dataIds != null && dataIds.size() > 0);
jdbcTemplate.update(deleteFromOutgoingBatchSql, new Object[] { batchId });
return eventCount;
}
});
}
if (batchCount > 0) {
logger.info("Purged " + batchCount + " batches and " + eventRowCount + " data_events.");
}
}
/**
* Select data ids using a streaming results set so we don't pull too much data into memory.
*/
@SuppressWarnings("unchecked")
private List<Integer> getNextDataIds(final String sql, final Object[] args, final int maxNumberToReturn) {
return (List<Integer>) jdbcTemplate.execute(new ConnectionCallback() {
public Object doInConnection(Connection conn) throws SQLException, DataAccessException {
List<Integer> dataIds = new ArrayList<Integer>();
PreparedStatement st = conn.prepareStatement(sql, java.sql.ResultSet.TYPE_FORWARD_ONLY,
java.sql.ResultSet.CONCUR_READ_ONLY);
if (args != null) {
for (int i = 1; i <= args.length; i++) {
st.setObject(i, args[i - 1]);
}
}
st.setFetchSize(dbDialect.getStreamingResultsFetchSize());
ResultSet rs = st.executeQuery();
for (int i = 0; i < 10000 && rs.next(); i++) {
dataIds.add(rs.getInt(1));
}
JdbcUtils.closeResultSet(rs);
JdbcUtils.closeStatement(st);
return dataIds;
}
});
}
private String cleanSql(String sql) {
return StringUtils.replace(StringUtils.replace(StringUtils.replace(sql, "\r", " "),"\n"," "), " ", "");
}
public void setOtherPurgeSql(String[] purgeSql) {
this.otherPurgeSql = purgeSql;
}
public void setRetentionInMinutes(int retentionInMinutes) {
this.retentionInMinutes = retentionInMinutes;
}
public void setDbDialect(IDbDialect dbDialect) {
this.dbDialect = dbDialect;
}
public void setSelectOutgoingBatchIdsToPurgeSql(String selectOutgoingBatchIdsToPurgeSql) {
this.selectOutgoingBatchIdsToPurgeSql = selectOutgoingBatchIdsToPurgeSql;
}
public void setDeleteFromOutgoingBatchHistSql(String deleteFromOutgoingBatchHistSql) {
this.deleteFromOutgoingBatchHistSql = deleteFromOutgoingBatchHistSql;
}
public void setDeleteFromOutgoingBatchSql(String deleteFromOutgoingBatchSql) {
this.deleteFromOutgoingBatchSql = deleteFromOutgoingBatchSql;
}
public void setSelectEventDataIdToPurgeSql(String selectDataIdToPurgeSql) {
this.selectEventDataIdToPurgeSql = selectDataIdToPurgeSql;
}
public void setDeleteDataEventSql(String deleteDataEventSql) {
this.deleteDataEventSql = deleteDataEventSql;
}
public void setDeleteDataSql(String deleteDataSql) {
this.deleteDataSql = deleteDataSql;
}
public void setTransactionTemplate(TransactionTemplate transactionTemplate) {
this.transactionTemplate = transactionTemplate;
}
public void setSelectDataIdToPurgeSql(String selectDataIdToDeleteSql) {
this.selectDataIdToPurgeSql = selectDataIdToDeleteSql;
}
public void setClusterService(IClusterService clusterService) {
this.clusterService = clusterService;
}
}