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[RocksJava] Improved BackupableDBTest

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- Splitted methods to meaningful tests
- Added tests for additional functionality
- Covered missing parts
main
fyrz 10 years ago
parent 24fdc47416
commit fa703efb28
1 changed files with 348 additions and 104 deletions
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  1. 450
      java/org/rocksdb/test/BackupableDBTest.java

450
java/org/rocksdb/test/BackupableDBTest.java
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@ -28,143 +28,387 @@ public class BackupableDBTest {
public TemporaryFolder backupFolder = new TemporaryFolder();
@Test
public void backupableDb() throws RocksDBException {
public void backupDb() throws RocksDBException {
Options opt = null;
BackupableDBOptions bopt = null;
BackupableDB bdb = null;
RestoreOptions ropt = null;
RestoreBackupableDB rdb = null;
try {
opt = new Options();
opt.setCreateIfMissing(true);
opt = new Options().setCreateIfMissing(true);
bopt = new BackupableDBOptions(
backupFolder.getRoot().getAbsolutePath());
assertThat(bopt.backupDir()).isEqualTo(
backupFolder.getRoot().getAbsolutePath());
List<BackupInfo> backupInfos;
List<BackupInfo> restoreInfos;
// Open empty database.
bdb = BackupableDB.open(opt, bopt,
dbFolder.getRoot().getAbsolutePath());
bdb.put("abc".getBytes(), "def".getBytes());
bdb.put("ghi".getBytes(), "jkl".getBytes());
backupInfos = bdb.getBackupInfos();
assertThat(backupInfos.size()).
isEqualTo(0);
// Fill database with some test values
prepareDatabase(bdb);
// Create two backups
bdb.createNewBackup(false);
bdb.createNewBackup(true);
verifyNumberOfValidBackups(bdb, 2);
} finally {
if (bdb != null) {
bdb.close();
}
if (bopt != null) {
bopt.dispose();
}
if (opt != null) {
opt.dispose();
}
}
}
@Test
public void deleteBackup() throws RocksDBException {
Options opt = null;
BackupableDBOptions bopt = null;
BackupableDB bdb = null;
try {
opt = new Options().setCreateIfMissing(true);
bopt = new BackupableDBOptions(
backupFolder.getRoot().getAbsolutePath());
assertThat(bopt.backupDir()).isEqualTo(
backupFolder.getRoot().getAbsolutePath());
// Open empty database.
bdb = BackupableDB.open(opt, bopt,
dbFolder.getRoot().getAbsolutePath());
// Fill database with some test values
prepareDatabase(bdb);
// Create two backups
bdb.createNewBackup(false);
bdb.createNewBackup(true);
assertThat(bdb.getCorruptedBackups().size()).
isEqualTo(0);
bdb.garbageCollect();
backupInfos = bdb.getBackupInfos();
assertThat(backupInfos.size()).
isEqualTo(1);
// Retrieving backup infos twice shall not
// lead to different results
List<BackupInfo> tmpBackupInfo = bdb.getBackupInfos();
assertThat(tmpBackupInfo.get(0).backupId()).
isEqualTo(backupInfos.get(0).backupId());
assertThat(tmpBackupInfo.get(0).timestamp()).
isEqualTo(backupInfos.get(0).timestamp());
assertThat(tmpBackupInfo.get(0).size()).
isEqualTo(backupInfos.get(0).size());
assertThat(tmpBackupInfo.get(0).numberFiles()).
isEqualTo(backupInfos.get(0).numberFiles());
// delete record after backup
bdb.remove("abc".getBytes());
byte[] value = bdb.get("abc".getBytes());
assertThat(value).isNull();
List<BackupInfo> backupInfo =
verifyNumberOfValidBackups(bdb, 2);
// Delete the first backup
bdb.deleteBackup(backupInfo.get(0).backupId());
List<BackupInfo> newBackupInfo =
verifyNumberOfValidBackups(bdb, 1);
// The second backup must remain.
assertThat(newBackupInfo.get(0).backupId()).
isEqualTo(backupInfo.get(1).backupId());
} finally {
if (bdb != null) {
bdb.close();
}
if (bopt != null) {
bopt.dispose();
}
if (opt != null) {
opt.dispose();
}
}
}
// restore from backup
ropt = new RestoreOptions(false);
@Test
public void deleteBackupWithRestoreBackupableDB()
throws RocksDBException {
Options opt = null;
BackupableDBOptions bopt = null;
BackupableDB bdb = null;
RestoreBackupableDB rdb = null;
try {
opt = new Options().setCreateIfMissing(true);
bopt = new BackupableDBOptions(
backupFolder.getRoot().getAbsolutePath());
assertThat(bopt.backupDir()).isEqualTo(
backupFolder.getRoot().getAbsolutePath());
// Open empty database.
bdb = BackupableDB.open(opt, bopt,
dbFolder.getRoot().getAbsolutePath());
// Fill database with some test values
prepareDatabase(bdb);
// Create two backups
bdb.createNewBackup(false);
bdb.createNewBackup(true);
List<BackupInfo> backupInfo =
verifyNumberOfValidBackups(bdb, 2);
// init RestoreBackupableDB
rdb = new RestoreBackupableDB(bopt);
// getting backup infos from restorable db should
// lead to the same infos as from backupable db
restoreInfos = rdb.getBackupInfos();
assertThat(restoreInfos.size()).
isEqualTo(backupInfos.size());
assertThat(restoreInfos.get(0).backupId()).
isEqualTo(backupInfos.get(0).backupId());
assertThat(restoreInfos.get(0).timestamp()).
isEqualTo(backupInfos.get(0).timestamp());
assertThat(restoreInfos.get(0).size()).
isEqualTo(backupInfos.get(0).size());
assertThat(restoreInfos.get(0).numberFiles()).
isEqualTo(backupInfos.get(0).numberFiles());
rdb.restoreDBFromLatestBackup(
dbFolder.getRoot().getAbsolutePath(),
dbFolder.getRoot().getAbsolutePath(),
ropt);
// do nothing because there is only one backup
rdb.purgeOldBackups(1);
rdb.garbageCollect();
assertThat(rdb.getCorruptedBackups().size()).
isEqualTo(0);
restoreInfos = rdb.getBackupInfos();
assertThat(restoreInfos.size()).
isEqualTo(1);
// Delete the first backup
rdb.deleteBackup(backupInfo.get(0).backupId());
// Fetch backup info using RestoreBackupableDB
List<BackupInfo> newBackupInfo = verifyNumberOfValidBackups(rdb, 1);
// The second backup must remain.
assertThat(newBackupInfo.get(0).backupId()).
isEqualTo(backupInfo.get(1).backupId());
} finally {
if (bdb != null) {
bdb.close();
}
if (rdb != null) {
rdb.dispose();
ropt.dispose();
}
if (bopt != null) {
bopt.dispose();
}
if (opt != null) {
opt.dispose();
}
}
}
// verify that backed up data contains deleted record
@Test
public void purgeOldBackups() throws RocksDBException {
Options opt = null;
BackupableDBOptions bopt = null;
BackupableDB bdb = null;
try {
opt = new Options().setCreateIfMissing(true);
bopt = new BackupableDBOptions(
backupFolder.getRoot().getAbsolutePath());
assertThat(bopt.backupDir()).isEqualTo(
backupFolder.getRoot().getAbsolutePath());
// Open empty database.
bdb = BackupableDB.open(opt, bopt,
dbFolder.getRoot().getAbsolutePath());
value = bdb.get("abc".getBytes());
assertThat(new String(value)).
isEqualTo("def");
bdb.createNewBackup(false);
// after new backup there must be two backup infos
backupInfos = bdb.getBackupInfos();
assertThat(backupInfos.size()).
isEqualTo(2);
// deleting the backup must be possible using the
// id provided by backup infos
bdb.deleteBackup(backupInfos.get(1).backupId());
// after deletion there should only be one info
backupInfos = bdb.getBackupInfos();
assertThat(backupInfos.size()).
isEqualTo(1);
bdb.createNewBackup(false);
// Fill database with some test values
prepareDatabase(bdb);
// Create two backups
bdb.createNewBackup(false);
bdb.createNewBackup(false);
backupInfos = bdb.getBackupInfos();
assertThat(backupInfos.size()).
isEqualTo(4);
// purge everything and keep two
bdb.purgeOldBackups(2);
// backup infos need to be two
backupInfos = bdb.getBackupInfos();
assertThat(backupInfos.size()).
isEqualTo(2);
assertThat(backupInfos.get(0).backupId()).
isEqualTo(4);
assertThat(backupInfos.get(1).backupId()).
isEqualTo(5);
bdb.createNewBackup(true);
bdb.createNewBackup(true);
bdb.createNewBackup(true);
List<BackupInfo> backupInfo =
verifyNumberOfValidBackups(bdb, 4);
// Delete everything except the latest backup
bdb.purgeOldBackups(1);
List<BackupInfo> newBackupInfo =
verifyNumberOfValidBackups(bdb, 1);
// The latest backup must remain.
assertThat(newBackupInfo.get(0).backupId()).
isEqualTo(backupInfo.get(3).backupId());
} finally {
if (bdb != null) {
bdb.close();
}
if (bopt != null) {
bopt.dispose();
}
if (opt != null) {
opt.dispose();
}
}
}
@Test
public void purgeOldBackupsWithRestoreBackupableDb()
throws RocksDBException {
Options opt = null;
BackupableDBOptions bopt = null;
BackupableDB bdb = null;
RestoreBackupableDB rdb = null;
try {
opt = new Options().setCreateIfMissing(true);
bopt = new BackupableDBOptions(
backupFolder.getRoot().getAbsolutePath());
assertThat(bopt.backupDir()).isEqualTo(
backupFolder.getRoot().getAbsolutePath());
// Open empty database.
bdb = BackupableDB.open(opt, bopt,
dbFolder.getRoot().getAbsolutePath());
// Fill database with some test values
prepareDatabase(bdb);
// Create two backups
bdb.createNewBackup(false);
bdb.createNewBackup(true);
bdb.createNewBackup(true);
bdb.createNewBackup(true);
verifyNumberOfValidBackups(bdb, 4);
// init RestoreBackupableDB
rdb = new RestoreBackupableDB(bopt);
// the same number of backups must
// exist using RestoreBackupableDB.
verifyNumberOfValidBackups(rdb, 4);
rdb.purgeOldBackups(1);
verifyNumberOfValidBackups(rdb, 1);
} finally {
if (bdb != null) {
bdb.close();
}
if (rdb != null) {
rdb.dispose();
}
if (bopt != null) {
bopt.dispose();
}
if (opt != null) {
opt.dispose();
}
}
}
@Test
public void restoreLatestBackup()
throws RocksDBException {
Options opt = null;
BackupableDBOptions bopt = null;
BackupableDB bdb = null;
RestoreBackupableDB rdb = null;
try {
opt = new Options().setCreateIfMissing(true);
bopt = new BackupableDBOptions(
backupFolder.getRoot().getAbsolutePath());
assertThat(bopt.backupDir()).isEqualTo(
backupFolder.getRoot().getAbsolutePath());
// Open empty database.
bdb = BackupableDB.open(opt, bopt,
dbFolder.getRoot().getAbsolutePath());
// Fill database with some test values
prepareDatabase(bdb);
bdb.createNewBackup(true);
verifyNumberOfValidBackups(bdb, 1);
bdb.put("key1".getBytes(), "valueV2".getBytes());
bdb.put("key2".getBytes(), "valueV2".getBytes());
bdb.createNewBackup(true);
verifyNumberOfValidBackups(bdb, 2);
bdb.put("key1".getBytes(), "valueV3".getBytes());
bdb.put("key2".getBytes(), "valueV3".getBytes());
assertThat(new String(bdb.get("key1".getBytes()))).endsWith("V3");
assertThat(new String(bdb.get("key2".getBytes()))).endsWith("V3");
bdb.close();
// init RestoreBackupableDB
rdb = new RestoreBackupableDB(bopt);
verifyNumberOfValidBackups(rdb, 2);
// restore db from latest backup
rdb.restoreDBFromLatestBackup(dbFolder.getRoot().getAbsolutePath(),
dbFolder.getRoot().getAbsolutePath(),
new RestoreOptions(false));
// Open database again.
bdb = BackupableDB.open(opt, bopt,
dbFolder.getRoot().getAbsolutePath());
// Values must have suffix V2 because of restoring latest backup.
assertThat(new String(bdb.get("key1".getBytes()))).endsWith("V2");
assertThat(new String(bdb.get("key2".getBytes()))).endsWith("V2");
} finally {
if (bdb != null) {
bdb.close();
}
if (ropt != null) {
ropt.dispose();
if (rdb != null) {
rdb.dispose();
}
if (bopt != null) {
bopt.dispose();
}
if (opt != null) {
opt.dispose();
}
}
}
@Test
public void restoreFromBackup()
throws RocksDBException {
Options opt = null;
BackupableDBOptions bopt = null;
BackupableDB bdb = null;
RestoreBackupableDB rdb = null;
try {
opt = new Options().setCreateIfMissing(true);
bopt = new BackupableDBOptions(
backupFolder.getRoot().getAbsolutePath());
assertThat(bopt.backupDir()).isEqualTo(
backupFolder.getRoot().getAbsolutePath());
// Open empty database.
bdb = BackupableDB.open(opt, bopt,
dbFolder.getRoot().getAbsolutePath());
// Fill database with some test values
prepareDatabase(bdb);
bdb.createNewBackup(true);
verifyNumberOfValidBackups(bdb, 1);
bdb.put("key1".getBytes(), "valueV2".getBytes());
bdb.put("key2".getBytes(), "valueV2".getBytes());
bdb.createNewBackup(true);
verifyNumberOfValidBackups(bdb, 2);
bdb.put("key1".getBytes(), "valueV3".getBytes());
bdb.put("key2".getBytes(), "valueV3".getBytes());
assertThat(new String(bdb.get("key1".getBytes()))).endsWith("V3");
assertThat(new String(bdb.get("key2".getBytes()))).endsWith("V3");
bdb.close();
// init RestoreBackupableDB
rdb = new RestoreBackupableDB(bopt);
List<BackupInfo> backupInfo = verifyNumberOfValidBackups(rdb, 2);
// restore db from first backup
rdb.restoreDBFromBackup(backupInfo.get(0).backupId(),
dbFolder.getRoot().getAbsolutePath(),
dbFolder.getRoot().getAbsolutePath(),
new RestoreOptions(false));
// Open database again.
bdb = BackupableDB.open(opt, bopt,
dbFolder.getRoot().getAbsolutePath());
// Values must have suffix V2 because of restoring latest backup.
assertThat(new String(bdb.get("key1".getBytes()))).endsWith("V1");
assertThat(new String(bdb.get("key2".getBytes()))).endsWith("V1");
} finally {
if (bdb != null) {
bdb.close();
}
if (rdb != null) {
rdb.dispose();
}
if (bopt != null) {
bopt.dispose();
}
if (opt != null) {
opt.dispose();
}
}
}
/**
* Verify backups.
*
* @param bdb {@link BackupableDB} instance.
* @param expectedNumberOfBackups numerical value
* @throws RocksDBException thrown if an error occurs within the native
* part of the library.
*/
private List<BackupInfo> verifyNumberOfValidBackups(BackupableDB bdb,
int expectedNumberOfBackups) throws RocksDBException {
// Verify that backups exist
assertThat(bdb.getCorruptedBackups().size()).
isEqualTo(0);
bdb.garbageCollect();
List<BackupInfo> backupInfo = bdb.getBackupInfos();
assertThat(backupInfo.size()).
isEqualTo(expectedNumberOfBackups);
return backupInfo;
}
/**
* Verify backups.
*
* @param rdb {@link RestoreBackupableDB} instance.
* @param expectedNumberOfBackups numerical value
* @throws RocksDBException thrown if an error occurs within the native
* part of the library.
*/
private List<BackupInfo> verifyNumberOfValidBackups(
RestoreBackupableDB rdb, int expectedNumberOfBackups)
throws RocksDBException {
// Verify that backups exist
assertThat(rdb.getCorruptedBackups().size()).
isEqualTo(0);
rdb.garbageCollect();
List<BackupInfo> backupInfo = rdb.getBackupInfos();
assertThat(backupInfo.size()).
isEqualTo(expectedNumberOfBackups);
return backupInfo;
}
/**
* Fill database with some test values.
*
* @param db {@link RocksDB} instance.
* @throws RocksDBException thrown if an error occurs within the native
* part of the library.
*/
private void prepareDatabase(RocksDB db)
throws RocksDBException {
db.put("key1".getBytes(), "valueV1".getBytes());
db.put("key2".getBytes(), "valueV1".getBytes());
}
}

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