| | |
| | | import org.opends.server.backends.pluggable.spi.AccessMode; |
| | | import org.opends.server.backends.pluggable.spi.Cursor; |
| | | import org.opends.server.backends.pluggable.spi.Importer; |
| | | import org.opends.server.backends.pluggable.spi.ReadOnlyStorageException; |
| | | import org.opends.server.backends.pluggable.spi.ReadOperation; |
| | | import org.opends.server.backends.pluggable.spi.ReadableTransaction; |
| | | import org.opends.server.backends.pluggable.spi.TreeName; |
| | |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * A storage opened READ_ONLY must still hand out the write transaction {@code RootContainer.open()} asks for |
| | | * there - otherwise the offline export-ldif, verify-index and backendstat fail before reading anything - and |
| | | * that transaction must serve exactly what the open needs and nothing more: opening an existing tree, reads, |
| | | * cursors and record counts, while every mutation, including a delete through a cursor it opened, is |
| | | * refused (#874). |
| | | */ |
| | | @Test |
| | | public void testReadOnlyTransactionReadsButRefusesWrites() throws Exception { |
| | | final JDBCStorage storage = new JDBCStorage(createBackendCfg(), null); |
| | | final TreeName tree = new TreeName("testReadOnlyTransaction", "tree"); |
| | | final TreeName absent = new TreeName("testReadOnlyTransaction", "absent"); |
| | | try { |
| | | storage.open(AccessMode.READ_WRITE); |
| | | storage.write(new WriteOperation() { |
| | | @Override |
| | | public void run(WriteableTransaction txn) throws Exception { |
| | | txn.openTree(tree, true); |
| | | txn.put(tree, key(0), value(0)); |
| | | txn.put(tree, key(1), value(1)); |
| | | } |
| | | }); |
| | | storage.close(); |
| | | |
| | | storage.open(AccessMode.READ_ONLY); |
| | | storage.write(new WriteOperation() { |
| | | @Override |
| | | public void run(WriteableTransaction txn) throws Exception { |
| | | // what RootContainer.open() does through this transaction in read-only mode |
| | | txn.openTree(tree, false); |
| | | assertEquals(txn.read(tree, key(0)), value(0)); |
| | | assertEquals(txn.getRecordCount(tree), 2); |
| | | try (final Cursor<ByteString, ByteString> cursor = txn.openCursor(tree)) { |
| | | assertTrue(cursor.next()); |
| | | assertEquals(cursor.getKey(), key(0)); |
| | | try { |
| | | cursor.delete(); |
| | | fail("delete() through a cursor of a read-only transaction must fail"); |
| | | } catch (UnsupportedOperationException expected) {} |
| | | } |
| | | |
| | | assertReadOnly("openTree(createOnDemand)", () -> txn.openTree(absent, true)); |
| | | assertReadOnly("put", () -> txn.put(tree, key(2), value(2))); |
| | | assertReadOnly("update", () -> txn.update(tree, key(0), old -> value(3))); |
| | | assertReadOnly("delete", () -> txn.delete(tree, key(0))); |
| | | assertReadOnly("deleteTree", () -> txn.deleteTree(tree)); |
| | | } |
| | | }); |
| | | |
| | | // nothing above reached the database |
| | | storage.close(); |
| | | storage.open(AccessMode.READ_WRITE); |
| | | storage.read(new ReadOperation<Void>() { |
| | | @Override |
| | | public Void run(ReadableTransaction txn) throws Exception { |
| | | assertEquals(txn.getRecordCount(tree), 2); |
| | | assertEquals(txn.read(tree, key(0)), value(0)); |
| | | return null; |
| | | } |
| | | }); |
| | | } finally { |
| | | try { |
| | | storage.write(new WriteOperation() { |
| | | @Override |
| | | public void run(WriteableTransaction txn) throws Exception { |
| | | txn.deleteTree(tree); |
| | | } |
| | | }); |
| | | } catch (Exception ignored) {} |
| | | storage.close(); |
| | | } |
| | | } |
| | | |
| | | private static void assertReadOnly(String operation, Runnable mutation) { |
| | | try { |
| | | mutation.run(); |
| | | fail(operation + " must fail on a read-only storage"); |
| | | } catch (ReadOnlyStorageException expected) {} |
| | | } |
| | | |
| | | /** Buffer-served repositioning relies on the database collating keys in unsigned byte order. */ |
| | | @Test |
| | | public void testCursorKeyOrderIsUnsigned() throws Exception { |