@Test
public void testModifySnapshotBeforeCommit() throws Exception {
expect(snapshotStore.createSnapshot()).andReturn(SNAPSHOT1);
Snapshot modified = SNAPSHOT1.deepCopy().setTasks(ImmutableSet.of(TASK1));
Capture<MutateWork<Object, Exception>> transaction = createCapture();
expect(primaryStorage.write(capture(transaction))).andReturn(null);
distributedStore.persist(modified);
shutDownNow.execute();
control.replay();
clock.advance(INTERVAL);
storageBackup.createSnapshot();
String backup1 = storageBackup.createBackupName();
recovery.stage(backup1);
assertEquals(
IScheduledTask.setFromBuilders(SNAPSHOT1.getTasks()), recovery.query(Query.unscoped()));
recovery.deleteTasks(Query.taskScoped(Tasks.id(TASK2)));
assertEquals(
IScheduledTask.setFromBuilders(modified.getTasks()), recovery.query(Query.unscoped()));
recovery.commit();
transaction.getValue().apply(storeProvider);
}
@Override
public TemporaryStorage apply(Snapshot snapshot) {
final Storage storage = DbUtil.createFlaggedStorage();
FakeClock clock = new FakeClock();
clock.setNowMillis(snapshot.getTimestamp());
final SnapshotStore<Snapshot> snapshotStore = new SnapshotStoreImpl(clock, storage);
snapshotStore.applySnapshot(snapshot);
return new TemporaryStorage() {
@Override
public void deleteTasks(final Query.Builder query) {
storage.write(
new MutateWork.NoResult.Quiet() {
@Override
public void execute(MutableStoreProvider storeProvider) {
Set<String> ids =
FluentIterable.from(storeProvider.getTaskStore().fetchTasks(query))
.transform(Tasks::id)
.toSet();
storeProvider.getUnsafeTaskStore().deleteTasks(ids);
}
});
}
@Override
public Iterable<IScheduledTask> fetchTasks(final Query.Builder query) {
return storage.read(
new Work.Quiet<Iterable<IScheduledTask>>() {
@Override
public Iterable<IScheduledTask> apply(StoreProvider storeProvider) {
return storeProvider.getTaskStore().fetchTasks(query);
}
});
}
@Override
public Snapshot toSnapshot() {
return snapshotStore.createSnapshot();
}
};
}
