Source Code Cross Referenced for TestPowerOff.java in  » Database-DBMS » h2database » org » h2 » test » db » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » h2database » org.h2.test.db 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright 2004-2008 H2 Group. Licensed under the H2 License, Version 1.0
003:         * (license2)
004:         * Initial Developer: H2 Group
005:         */
006:        package org.h2.test.db;
007:
008:        import java.sql.Connection;
009:        import java.sql.DatabaseMetaData;
010:        import java.sql.ResultSet;
011:        import java.sql.SQLException;
012:        import java.sql.Statement;
013:        import java.util.ArrayList;
014:        import java.util.Random;
015:
016:        import org.h2.constant.SysProperties;
017:        import org.h2.engine.Constants;
018:        import org.h2.engine.Database;
019:        import org.h2.jdbc.JdbcConnection;
020:        import org.h2.store.FileLister;
021:        import org.h2.test.TestBase;
022:        import org.h2.util.FileUtils;
023:        import org.h2.util.JdbcUtils;
024:
025:        /**
026:         * Tests simulated power off conditions.
027:         */
028:        public class TestPowerOff extends TestBase {
029:
030:            private String dbName = "powerOff";
031:            private String dir, url;
032:
033:            private int maxPowerOffCount;
034:
035:            public void test() throws Exception {
036:                if (config.memory || config.logMode == 0) {
037:                    return;
038:                }
039:                if (config.big) {
040:                    dir = baseDir;
041:                } else {
042:                    dir = "memFS:";
043:                }
044:                url = dir + "/" + dbName + ";file_lock=no";
045:                testSummaryCrash();
046:                testCrash();
047:                testShutdown();
048:                testNoIndexFile();
049:                testMemoryTables();
050:                testPersistentTables();
051:            }
052:
053:            private void testSummaryCrash() throws Exception {
054:                if (config.networked) {
055:                    return;
056:                }
057:                deleteDb(dir, dbName);
058:                Connection conn = getConnection(url);
059:                Statement stat = conn.createStatement();
060:                for (int i = 0; i < 10; i++) {
061:                    stat.execute("CREATE TABLE TEST" + i
062:                            + "(ID INT PRIMARY KEY, NAME VARCHAR)");
063:                    for (int j = 0; j < 10; j++) {
064:                        stat.execute("INSERT INTO TEST" + i + " VALUES(" + j
065:                                + ", 'Hello')");
066:                    }
067:                }
068:                for (int i = 0; i < 10; i += 2) {
069:                    stat.execute("DROP TABLE TEST" + i);
070:                }
071:                stat.execute("SET WRITE_DELAY 0");
072:                stat.execute("CHECKPOINT");
073:                for (int j = 0; j < 10; j++) {
074:                    stat.execute("INSERT INTO TEST1 VALUES(" + (10 + j)
075:                            + ", 'World')");
076:                }
077:                stat.execute("SHUTDOWN IMMEDIATELY");
078:                JdbcUtils.closeSilently(conn);
079:                conn = getConnection(url);
080:                stat = conn.createStatement();
081:                for (int i = 1; i < 10; i += 2) {
082:                    ResultSet rs = stat.executeQuery("SELECT * FROM TEST" + i
083:                            + " ORDER BY ID");
084:                    for (int j = 0; j < 10; j++) {
085:                        rs.next();
086:                        check(rs.getInt(1), j);
087:                        check(rs.getString(2), "Hello");
088:                    }
089:                    if (i == 1) {
090:                        for (int j = 0; j < 10; j++) {
091:                            rs.next();
092:                            check(rs.getInt(1), j + 10);
093:                            check(rs.getString(2), "World");
094:                        }
095:                    }
096:                    checkFalse(rs.next());
097:                }
098:                conn.close();
099:            }
100:
101:            private void testCrash() throws Exception {
102:                if (config.networked) {
103:                    return;
104:                }
105:                deleteDb(dir, dbName);
106:                Random random = new Random(1);
107:                SysProperties.runFinalize = false;
108:                int repeat = getSize(1, 20);
109:                for (int i = 0; i < repeat; i++) {
110:                    Connection conn = getConnection(url);
111:                    conn.close();
112:                    conn = getConnection(url);
113:                    Statement stat = conn.createStatement();
114:                    stat.execute("SET WRITE_DELAY 0");
115:                    ((JdbcConnection) conn).setPowerOffCount(random
116:                            .nextInt(100));
117:                    try {
118:                        stat.execute("DROP TABLE IF EXISTS TEST");
119:                        stat
120:                                .execute("CREATE TABLE TEST(ID INT PRIMARY KEY, NAME VARCHAR(255))");
121:                        conn.setAutoCommit(false);
122:                        int len = getSize(3, 100);
123:                        for (int j = 0; j < len; j++) {
124:                            stat.execute("INSERT INTO TEST VALUES(" + j
125:                                    + ", 'Hello')");
126:                            if (random.nextInt(5) == 0) {
127:                                conn.commit();
128:                            }
129:                            if (random.nextInt(10) == 0) {
130:                                stat.execute("DROP TABLE IF EXISTS TEST");
131:                                stat
132:                                        .execute("CREATE TABLE TEST(ID INT PRIMARY KEY, NAME VARCHAR(255))");
133:                            }
134:                        }
135:                        stat.execute("DROP TABLE IF EXISTS TEST");
136:                        conn.close();
137:                    } catch (SQLException e) {
138:                        if (!e.getSQLState().equals("90098")) {
139:                            TestBase.logError("power", e);
140:                        }
141:                    }
142:                }
143:            }
144:
145:            private void testShutdown() throws Exception {
146:                deleteDb(dir, dbName);
147:                Connection conn = getConnection(url);
148:                Statement stat = conn.createStatement();
149:                stat
150:                        .execute("CREATE TABLE TEST(ID INT PRIMARY KEY, NAME VARCHAR(255))");
151:                stat.execute("INSERT INTO TEST VALUES(1, 'Hello')");
152:                stat.execute("SHUTDOWN");
153:                conn.close();
154:
155:                conn = getConnection(url);
156:                stat = conn.createStatement();
157:                ResultSet rs = stat.executeQuery("SELECT * FROM TEST");
158:                check(rs.next());
159:                checkFalse(rs.next());
160:                conn.close();
161:            }
162:
163:            private void testNoIndexFile() throws Exception {
164:                if (config.networked) {
165:                    return;
166:                }
167:                deleteDb(dir, dbName);
168:                Connection conn = getConnection(url);
169:                Statement stat = conn.createStatement();
170:                stat
171:                        .execute("CREATE MEMORY TABLE TEST(ID INT PRIMARY KEY, NAME VARCHAR(255))");
172:                stat.execute("INSERT INTO TEST VALUES(1, 'Hello')");
173:                ((JdbcConnection) conn).setPowerOffCount(1);
174:                try {
175:                    stat.execute("INSERT INTO TEST VALUES(2, 'Hello')");
176:                    stat.execute("CHECKPOINT");
177:                    error();
178:                } catch (SQLException e) {
179:                    checkNotGeneralException(e);
180:                }
181:                boolean deleted = false;
182:                ArrayList files = FileLister.getDatabaseFiles(dir, dbName,
183:                        false);
184:                for (int i = 0; i < files.size(); i++) {
185:                    String fileName = (String) files.get(i);
186:                    if (fileName.endsWith(Constants.SUFFIX_INDEX_FILE)) {
187:                        FileUtils.delete(fileName);
188:                        deleted = true;
189:                    }
190:                }
191:                check(deleted);
192:                conn = getConnection(url);
193:                conn.close();
194:            }
195:
196:            private void testMemoryTables() throws Exception {
197:                if (config.networked) {
198:                    return;
199:                }
200:                deleteDb(dir, dbName);
201:
202:                Connection conn = getConnection(url);
203:                Statement stat = conn.createStatement();
204:                stat
205:                        .execute("CREATE MEMORY TABLE TEST(ID INT PRIMARY KEY, NAME VARCHAR(255))");
206:                stat.execute("INSERT INTO TEST VALUES(1, 'Hello')");
207:                stat.execute("CHECKPOINT");
208:                ((JdbcConnection) conn).setPowerOffCount(1);
209:                try {
210:                    stat.execute("INSERT INTO TEST VALUES(2, 'Hello')");
211:                    stat.execute("INSERT INTO TEST VALUES(3, 'Hello')");
212:                    stat.execute("CHECKPOINT");
213:                    error();
214:                } catch (SQLException e) {
215:                    checkNotGeneralException(e);
216:                }
217:
218:                ((JdbcConnection) conn).setPowerOffCount(0);
219:                conn = getConnection(url);
220:                stat = conn.createStatement();
221:                ResultSet rs = stat.executeQuery("SELECT COUNT(*) FROM TEST");
222:                rs.next();
223:                check(rs.getInt(1), 1);
224:                conn.close();
225:            }
226:
227:            private void testPersistentTables() throws Exception {
228:                if (config.networked) {
229:                    return;
230:                }
231:                if (config.cipher != null) {
232:                    // this would take too long (setLength uses 
233:                    // individual writes, many thousand operations)
234:                    return;
235:                }
236:                deleteDb(dir, dbName);
237:
238:                // ((JdbcConnection)conn).setPowerOffCount(Integer.MAX_VALUE);
239:                testRun(true);
240:                int max = maxPowerOffCount;
241:                trace("max=" + max);
242:                runTest(0, max, true);
243:                recoverAndCheckConsistency();
244:                runTest(0, max, false);
245:                recoverAndCheckConsistency();
246:            }
247:
248:            void runTest(int min, int max, boolean withConsistencyCheck)
249:                    throws Exception {
250:                for (int i = min; i < max; i++) {
251:                    deleteDb(dir, dbName);
252:                    Database.setInitialPowerOffCount(i);
253:                    int expect = testRun(false);
254:                    if (withConsistencyCheck) {
255:                        int got = recoverAndCheckConsistency();
256:                        trace("test " + i + " of " + max + " expect=" + expect
257:                                + " got=" + got);
258:                    } else {
259:                        trace("test " + i + " of " + max + " expect=" + expect);
260:                    }
261:                }
262:                Database.setInitialPowerOffCount(0);
263:            }
264:
265:            int testRun(boolean init) throws Exception {
266:                if (init) {
267:                    Database.setInitialPowerOffCount(Integer.MAX_VALUE);
268:                }
269:                int state = 0;
270:                try {
271:                    Connection conn = getConnection(url);
272:                    Statement stat = conn.createStatement();
273:                    stat.execute("SET WRITE_DELAY 0");
274:                    stat
275:                            .execute("CREATE TABLE IF NOT EXISTS TEST(ID INT PRIMARY KEY, NAME VARCHAR(255))");
276:                    state = 1;
277:                    conn.setAutoCommit(false);
278:                    stat.execute("INSERT INTO TEST VALUES(1, 'Hello')");
279:                    stat.execute("INSERT INTO TEST VALUES(2, 'World')");
280:                    conn.commit();
281:                    state = 2;
282:                    stat.execute("UPDATE TEST SET NAME='Hallo' WHERE ID=1");
283:                    stat.execute("UPDATE TEST SET NAME='Welt' WHERE ID=2");
284:                    conn.commit();
285:                    state = 3;
286:                    stat.execute("DELETE FROM TEST WHERE ID=1");
287:                    stat.execute("DELETE FROM TEST WHERE ID=2");
288:                    conn.commit();
289:                    state = 1;
290:                    stat.execute("DROP TABLE TEST");
291:                    state = 0;
292:                    if (init) {
293:                        maxPowerOffCount = Integer.MAX_VALUE
294:                                - ((JdbcConnection) conn).getPowerOffCount();
295:                    }
296:                    conn.close();
297:                } catch (SQLException e) {
298:                    if (e.getSQLState().equals("90098")) {
299:                        // this is ok
300:                    } else {
301:                        throw e;
302:                    }
303:                }
304:                return state;
305:            }
306:
307:            int recoverAndCheckConsistency() throws Exception {
308:                int state;
309:                Database.setInitialPowerOffCount(0);
310:                Connection conn = getConnection(url);
311:                if (((JdbcConnection) conn).getPowerOffCount() != 0) {
312:                    error("power off count is not 0");
313:                }
314:                Statement stat = conn.createStatement();
315:                DatabaseMetaData meta = conn.getMetaData();
316:                ResultSet rs = meta.getTables(null, null, "TEST", null);
317:                if (!rs.next()) {
318:                    state = 0;
319:                } else {
320:                    // table does not exist
321:                    rs = stat.executeQuery("SELECT * FROM TEST ORDER BY ID");
322:                    if (!rs.next()) {
323:                        state = 1;
324:                    } else {
325:                        check(rs.getInt(1), 1);
326:                        String name1 = rs.getString(2);
327:                        check(rs.next());
328:                        check(rs.getInt(1), 2);
329:                        String name2 = rs.getString(2);
330:                        checkFalse(rs.next());
331:                        if ("Hello".equals(name1)) {
332:                            check(name2, "World");
333:                            state = 2;
334:                        } else {
335:                            check(name1, "Hallo");
336:                            check(name2, "Welt");
337:                            state = 3;
338:                        }
339:                    }
340:                }
341:                conn.close();
342:                return state;
343:            }
344:
345:        }
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