remove ceph code
[stor4nfv.git] / src / ceph / src / test / rbd_mirror / test_mock_InstanceWatcher.cc
diff --git a/src/ceph/src/test/rbd_mirror/test_mock_InstanceWatcher.cc b/src/ceph/src/test/rbd_mirror/test_mock_InstanceWatcher.cc
deleted file mode 100644 (file)
index 69497d3..0000000
+++ /dev/null
@@ -1,926 +0,0 @@
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-
-#include "librados/AioCompletionImpl.h"
-#include "librbd/ManagedLock.h"
-#include "test/librados/test.h"
-#include "test/librados_test_stub/MockTestMemIoCtxImpl.h"
-#include "test/librados_test_stub/MockTestMemRadosClient.h"
-#include "test/librbd/mock/MockImageCtx.h"
-#include "test/rbd_mirror/test_mock_fixture.h"
-#include "tools/rbd_mirror/InstanceReplayer.h"
-#include "tools/rbd_mirror/ImageSyncThrottler.h"
-#include "tools/rbd_mirror/InstanceWatcher.h"
-#include "tools/rbd_mirror/Threads.h"
-
-namespace librbd {
-
-namespace {
-
-struct MockTestImageCtx : public MockImageCtx {
-  MockTestImageCtx(librbd::ImageCtx &image_ctx)
-    : librbd::MockImageCtx(image_ctx) {
-  }
-};
-
-} // anonymous namespace
-
-template <>
-struct ManagedLock<MockTestImageCtx> {
-  static ManagedLock* s_instance;
-
-  static ManagedLock *create(librados::IoCtx& ioctx, ContextWQ *work_queue,
-                             const std::string& oid, librbd::Watcher *watcher,
-                             managed_lock::Mode  mode,
-                             bool blacklist_on_break_lock,
-                             uint32_t blacklist_expire_seconds) {
-    assert(s_instance != nullptr);
-    return s_instance;
-  }
-
-  ManagedLock() {
-    assert(s_instance == nullptr);
-    s_instance = this;
-  }
-
-  ~ManagedLock() {
-    assert(s_instance == this);
-    s_instance = nullptr;
-  }
-
-  MOCK_METHOD0(destroy, void());
-  MOCK_METHOD1(shut_down, void(Context *));
-  MOCK_METHOD1(acquire_lock, void(Context *));
-  MOCK_METHOD2(get_locker, void(managed_lock::Locker *, Context *));
-  MOCK_METHOD3(break_lock, void(const managed_lock::Locker &, bool, Context *));
-};
-
-ManagedLock<MockTestImageCtx> *ManagedLock<MockTestImageCtx>::s_instance = nullptr;
-
-} // namespace librbd
-
-namespace rbd {
-namespace mirror {
-
-template <>
-struct Threads<librbd::MockTestImageCtx> {
-  Mutex &timer_lock;
-  SafeTimer *timer;
-  ContextWQ *work_queue;
-
-  Threads(Threads<librbd::ImageCtx> *threads)
-    : timer_lock(threads->timer_lock), timer(threads->timer),
-      work_queue(threads->work_queue) {
-  }
-};
-
-template <>
-struct InstanceReplayer<librbd::MockTestImageCtx> {
-  MOCK_METHOD3(acquire_image, void(InstanceWatcher<librbd::MockTestImageCtx> *,
-                                   const std::string &, Context *));
-  MOCK_METHOD2(release_image, void(const std::string &, Context *));
-  MOCK_METHOD3(remove_peer_image, void(const std::string&, const std::string&,
-                                       Context *));
-};
-
-template <>
-struct ImageSyncThrottler<librbd::MockTestImageCtx> {
-  static ImageSyncThrottler* s_instance;
-
-  static ImageSyncThrottler *create() {
-    assert(s_instance != nullptr);
-    return s_instance;
-  }
-
-  ImageSyncThrottler() {
-    assert(s_instance == nullptr);
-    s_instance = this;
-  }
-
-  virtual ~ImageSyncThrottler() {
-    assert(s_instance == this);
-    s_instance = nullptr;
-  }
-
-  MOCK_METHOD0(destroy, void());
-  MOCK_METHOD1(drain, void(int));
-  MOCK_METHOD2(start_op, void(const std::string &, Context *));
-  MOCK_METHOD1(finish_op, void(const std::string &));
-};
-
-ImageSyncThrottler<librbd::MockTestImageCtx>* ImageSyncThrottler<librbd::MockTestImageCtx>::s_instance = nullptr;
-
-} // namespace mirror
-} // namespace rbd
-
-// template definitions
-#include "tools/rbd_mirror/InstanceWatcher.cc"
-
-namespace rbd {
-namespace mirror {
-
-using ::testing::_;
-using ::testing::InSequence;
-using ::testing::Invoke;
-using ::testing::Return;
-using ::testing::StrEq;
-using ::testing::WithArg;
-
-class TestMockInstanceWatcher : public TestMockFixture {
-public:
-  typedef librbd::ManagedLock<librbd::MockTestImageCtx> MockManagedLock;
-  typedef InstanceReplayer<librbd::MockTestImageCtx> MockInstanceReplayer;
-  typedef InstanceWatcher<librbd::MockTestImageCtx> MockInstanceWatcher;
-  typedef Threads<librbd::MockTestImageCtx> MockThreads;
-
-  std::string m_instance_id;
-  std::string m_oid;
-  MockThreads *m_mock_threads;
-
-  void SetUp() override {
-    TestFixture::SetUp();
-    m_local_io_ctx.remove(RBD_MIRROR_LEADER);
-    EXPECT_EQ(0, m_local_io_ctx.create(RBD_MIRROR_LEADER, true));
-
-    m_instance_id = stringify(m_local_io_ctx.get_instance_id());
-    m_oid = RBD_MIRROR_INSTANCE_PREFIX + m_instance_id;
-
-    m_mock_threads = new MockThreads(m_threads);
-  }
-
-  void TearDown() override {
-    delete m_mock_threads;
-    TestMockFixture::TearDown();
-  }
-
-  void expect_register_watch(librados::MockTestMemIoCtxImpl &mock_io_ctx) {
-    EXPECT_CALL(mock_io_ctx, aio_watch(m_oid, _, _, _));
-  }
-
-  void expect_register_watch(librados::MockTestMemIoCtxImpl &mock_io_ctx,
-                             const std::string &instance_id) {
-    std::string oid = RBD_MIRROR_INSTANCE_PREFIX + instance_id;
-    EXPECT_CALL(mock_io_ctx, aio_watch(oid, _, _, _));
-  }
-
-  void expect_unregister_watch(librados::MockTestMemIoCtxImpl &mock_io_ctx) {
-    EXPECT_CALL(mock_io_ctx, aio_unwatch(_, _));
-  }
-
-  void expect_register_instance(librados::MockTestMemIoCtxImpl &mock_io_ctx,
-                                int r) {
-    EXPECT_CALL(mock_io_ctx, exec(RBD_MIRROR_LEADER, _, StrEq("rbd"),
-                                  StrEq("mirror_instances_add"), _, _, _))
-      .WillOnce(Return(r));
-  }
-
-  void expect_unregister_instance(librados::MockTestMemIoCtxImpl &mock_io_ctx,
-                                  int r) {
-    EXPECT_CALL(mock_io_ctx, exec(RBD_MIRROR_LEADER, _, StrEq("rbd"),
-                                  StrEq("mirror_instances_remove"), _, _, _))
-      .WillOnce(Return(r));
-  }
-
-  void expect_acquire_lock(MockManagedLock &mock_managed_lock, int r) {
-    EXPECT_CALL(mock_managed_lock, acquire_lock(_))
-      .WillOnce(CompleteContext(r));
-  }
-
-  void expect_release_lock(MockManagedLock &mock_managed_lock, int r) {
-    EXPECT_CALL(mock_managed_lock, shut_down(_)).WillOnce(CompleteContext(r));
-  }
-
-  void expect_destroy_lock(MockManagedLock &mock_managed_lock,
-                           Context *ctx = nullptr) {
-    EXPECT_CALL(mock_managed_lock, destroy())
-      .WillOnce(Invoke([ctx]() {
-            if (ctx != nullptr) {
-              ctx->complete(0);
-            }
-          }));
-  }
-
-  void expect_get_locker(MockManagedLock &mock_managed_lock,
-                         const librbd::managed_lock::Locker &locker, int r) {
-    EXPECT_CALL(mock_managed_lock, get_locker(_, _))
-      .WillOnce(Invoke([r, locker](librbd::managed_lock::Locker *out,
-                                   Context *ctx) {
-                         if (r == 0) {
-                           *out = locker;
-                         }
-                         ctx->complete(r);
-                       }));
-  }
-
-  void expect_break_lock(MockManagedLock &mock_managed_lock,
-                         const librbd::managed_lock::Locker &locker, int r) {
-    EXPECT_CALL(mock_managed_lock, break_lock(locker, true, _))
-      .WillOnce(WithArg<2>(CompleteContext(r)));
-  }
-};
-
-TEST_F(TestMockInstanceWatcher, InitShutdown) {
-  MockManagedLock mock_managed_lock;
-  librados::MockTestMemIoCtxImpl &mock_io_ctx(get_mock_io_ctx(m_local_io_ctx));
-
-  auto instance_watcher = new MockInstanceWatcher(
-    m_local_io_ctx, m_mock_threads->work_queue, nullptr, m_instance_id);
-  InSequence seq;
-
-  // Init
-  expect_register_instance(mock_io_ctx, 0);
-  expect_register_watch(mock_io_ctx);
-  expect_acquire_lock(mock_managed_lock, 0);
-  ASSERT_EQ(0, instance_watcher->init());
-
-  // Shutdown
-  expect_release_lock(mock_managed_lock, 0);
-  expect_unregister_watch(mock_io_ctx);
-  expect_unregister_instance(mock_io_ctx, 0);
-  instance_watcher->shut_down();
-
-  expect_destroy_lock(mock_managed_lock);
-  delete instance_watcher;
-}
-
-TEST_F(TestMockInstanceWatcher, InitError) {
-  MockManagedLock mock_managed_lock;
-  librados::MockTestMemIoCtxImpl &mock_io_ctx(get_mock_io_ctx(m_local_io_ctx));
-
-  auto instance_watcher = new MockInstanceWatcher(
-    m_local_io_ctx, m_mock_threads->work_queue, nullptr, m_instance_id);
-  InSequence seq;
-
-  expect_register_instance(mock_io_ctx, 0);
-  expect_register_watch(mock_io_ctx);
-  expect_acquire_lock(mock_managed_lock, -EINVAL);
-  expect_unregister_watch(mock_io_ctx);
-  expect_unregister_instance(mock_io_ctx, 0);
-
-  ASSERT_EQ(-EINVAL, instance_watcher->init());
-
-  expect_destroy_lock(mock_managed_lock);
-  delete instance_watcher;
-}
-
-TEST_F(TestMockInstanceWatcher, ShutdownError) {
-  MockManagedLock mock_managed_lock;
-  librados::MockTestMemIoCtxImpl &mock_io_ctx(get_mock_io_ctx(m_local_io_ctx));
-
-  auto instance_watcher = new MockInstanceWatcher(
-    m_local_io_ctx, m_mock_threads->work_queue, nullptr, m_instance_id);
-  InSequence seq;
-
-  // Init
-  expect_register_instance(mock_io_ctx, 0);
-  expect_register_watch(mock_io_ctx);
-  expect_acquire_lock(mock_managed_lock, 0);
-  ASSERT_EQ(0, instance_watcher->init());
-
-  // Shutdown
-  expect_release_lock(mock_managed_lock, -EINVAL);
-  expect_unregister_watch(mock_io_ctx);
-  expect_unregister_instance(mock_io_ctx, 0);
-  instance_watcher->shut_down();
-
-  expect_destroy_lock(mock_managed_lock);
-  delete instance_watcher;
-}
-
-
-TEST_F(TestMockInstanceWatcher, Remove) {
-  MockManagedLock mock_managed_lock;
-  librados::MockTestMemIoCtxImpl &mock_io_ctx(get_mock_io_ctx(m_local_io_ctx));
-  librbd::managed_lock::Locker
-    locker{entity_name_t::CLIENT(1), "auto 123", "1.2.3.4:0/0", 123};
-
-  InSequence seq;
-
-  expect_get_locker(mock_managed_lock, locker, 0);
-  expect_break_lock(mock_managed_lock, locker, 0);
-  expect_unregister_instance(mock_io_ctx, 0);
-  C_SaferCond on_destroy;
-  expect_destroy_lock(mock_managed_lock, &on_destroy);
-
-  C_SaferCond on_remove;
-  MockInstanceWatcher::remove_instance(m_local_io_ctx,
-                                       m_mock_threads->work_queue,
-                                       "instance_id", &on_remove);
-  ASSERT_EQ(0, on_remove.wait());
-  ASSERT_EQ(0, on_destroy.wait());
-}
-
-TEST_F(TestMockInstanceWatcher, RemoveNoent) {
-  MockManagedLock mock_managed_lock;
-  librados::MockTestMemIoCtxImpl &mock_io_ctx(get_mock_io_ctx(m_local_io_ctx));
-
-  InSequence seq;
-
-  expect_get_locker(mock_managed_lock, librbd::managed_lock::Locker(), -ENOENT);
-  expect_unregister_instance(mock_io_ctx, 0);
-  C_SaferCond on_destroy;
-  expect_destroy_lock(mock_managed_lock, &on_destroy);
-
-  C_SaferCond on_remove;
-  MockInstanceWatcher::remove_instance(m_local_io_ctx,
-                                       m_mock_threads->work_queue,
-                                       "instance_id", &on_remove);
-  ASSERT_EQ(0, on_remove.wait());
-  ASSERT_EQ(0, on_destroy.wait());
-}
-
-TEST_F(TestMockInstanceWatcher, ImageAcquireRelease) {
-  MockManagedLock mock_managed_lock;
-
-  librados::IoCtx& io_ctx1 = m_local_io_ctx;
-  std::string instance_id1 = m_instance_id;
-  librados::MockTestMemIoCtxImpl &mock_io_ctx1(get_mock_io_ctx(io_ctx1));
-  MockInstanceReplayer mock_instance_replayer1;
-  auto instance_watcher1 = MockInstanceWatcher::create(
-      io_ctx1, m_mock_threads->work_queue, &mock_instance_replayer1);
-
-  librados::Rados cluster;
-  librados::IoCtx io_ctx2;
-  EXPECT_EQ("", connect_cluster_pp(cluster));
-  EXPECT_EQ(0, cluster.ioctx_create(_local_pool_name.c_str(), io_ctx2));
-  std::string instance_id2 = stringify(io_ctx2.get_instance_id());
-  librados::MockTestMemIoCtxImpl &mock_io_ctx2(get_mock_io_ctx(io_ctx2));
-  MockInstanceReplayer mock_instance_replayer2;
-  auto instance_watcher2 = MockInstanceWatcher::create(
-    io_ctx2, m_mock_threads->work_queue, &mock_instance_replayer2);
-
-  InSequence seq;
-
-  // Init instance watcher 1
-  expect_register_instance(mock_io_ctx1, 0);
-  expect_register_watch(mock_io_ctx1, instance_id1);
-  expect_acquire_lock(mock_managed_lock, 0);
-  ASSERT_EQ(0, instance_watcher1->init());
-
-  // Init instance watcher 2
-  expect_register_instance(mock_io_ctx2, 0);
-  expect_register_watch(mock_io_ctx2, instance_id2);
-  expect_acquire_lock(mock_managed_lock, 0);
-  ASSERT_EQ(0, instance_watcher2->init());
-
-  // Acquire Image on the the same instance
-  EXPECT_CALL(mock_instance_replayer1, acquire_image(instance_watcher1, "gid",
-                                                     _))
-      .WillOnce(WithArg<2>(CompleteContext(0)));
-  C_SaferCond on_acquire1;
-  instance_watcher1->notify_image_acquire(instance_id1, "gid", &on_acquire1);
-  ASSERT_EQ(0, on_acquire1.wait());
-
-  // Acquire Image on the other instance
-  EXPECT_CALL(mock_instance_replayer2, acquire_image(instance_watcher2, "gid",
-                                                     _))
-      .WillOnce(WithArg<2>(CompleteContext(0)));
-  C_SaferCond on_acquire2;
-  instance_watcher1->notify_image_acquire(instance_id2, "gid", &on_acquire2);
-  ASSERT_EQ(0, on_acquire2.wait());
-
-  // Release Image on the the same instance
-  EXPECT_CALL(mock_instance_replayer1, release_image("gid", _))
-      .WillOnce(WithArg<1>(CompleteContext(0)));
-  C_SaferCond on_release1;
-  instance_watcher1->notify_image_release(instance_id1, "gid", &on_release1);
-  ASSERT_EQ(0, on_release1.wait());
-
-  // Release Image on the other instance
-  EXPECT_CALL(mock_instance_replayer2, release_image("gid", _))
-      .WillOnce(WithArg<1>(CompleteContext(0)));
-  C_SaferCond on_release2;
-  instance_watcher1->notify_image_release(instance_id2, "gid", &on_release2);
-  ASSERT_EQ(0, on_release2.wait());
-
-  // Shutdown instance watcher 1
-  expect_release_lock(mock_managed_lock, 0);
-  expect_unregister_watch(mock_io_ctx1);
-  expect_unregister_instance(mock_io_ctx1, 0);
-  instance_watcher1->shut_down();
-
-  expect_destroy_lock(mock_managed_lock);
-  delete instance_watcher1;
-
-  // Shutdown instance watcher 2
-  expect_release_lock(mock_managed_lock, 0);
-  expect_unregister_watch(mock_io_ctx2);
-  expect_unregister_instance(mock_io_ctx2, 0);
-  instance_watcher2->shut_down();
-
-  expect_destroy_lock(mock_managed_lock);
-  delete instance_watcher2;
-}
-
-TEST_F(TestMockInstanceWatcher, PeerImageRemoved) {
-  MockManagedLock mock_managed_lock;
-
-  librados::IoCtx& io_ctx1 = m_local_io_ctx;
-  std::string instance_id1 = m_instance_id;
-  librados::MockTestMemIoCtxImpl &mock_io_ctx1(get_mock_io_ctx(io_ctx1));
-  MockInstanceReplayer mock_instance_replayer1;
-  auto instance_watcher1 = MockInstanceWatcher::create(
-      io_ctx1, m_mock_threads->work_queue, &mock_instance_replayer1);
-
-  librados::Rados cluster;
-  librados::IoCtx io_ctx2;
-  EXPECT_EQ("", connect_cluster_pp(cluster));
-  EXPECT_EQ(0, cluster.ioctx_create(_local_pool_name.c_str(), io_ctx2));
-  std::string instance_id2 = stringify(io_ctx2.get_instance_id());
-  librados::MockTestMemIoCtxImpl &mock_io_ctx2(get_mock_io_ctx(io_ctx2));
-  MockInstanceReplayer mock_instance_replayer2;
-  auto instance_watcher2 = MockInstanceWatcher::create(
-    io_ctx2, m_mock_threads->work_queue, &mock_instance_replayer2);
-
-  InSequence seq;
-
-  // Init instance watcher 1
-  expect_register_instance(mock_io_ctx1, 0);
-  expect_register_watch(mock_io_ctx1, instance_id1);
-  expect_acquire_lock(mock_managed_lock, 0);
-  ASSERT_EQ(0, instance_watcher1->init());
-
-  // Init instance watcher 2
-  expect_register_instance(mock_io_ctx2, 0);
-  expect_register_watch(mock_io_ctx2, instance_id2);
-  expect_acquire_lock(mock_managed_lock, 0);
-  ASSERT_EQ(0, instance_watcher2->init());
-
-  // Peer Image Removed on the same instance
-  EXPECT_CALL(mock_instance_replayer1, remove_peer_image("gid", "uuid", _))
-      .WillOnce(WithArg<2>(CompleteContext(0)));
-  C_SaferCond on_removed1;
-  instance_watcher1->notify_peer_image_removed(instance_id1, "gid", "uuid",
-                                               &on_removed1);
-  ASSERT_EQ(0, on_removed1.wait());
-
-  // Peer Image Removed on the other instance
-  EXPECT_CALL(mock_instance_replayer2, remove_peer_image("gid", "uuid", _))
-      .WillOnce(WithArg<2>(CompleteContext(0)));
-  C_SaferCond on_removed2;
-  instance_watcher1->notify_peer_image_removed(instance_id2, "gid", "uuid",
-                                               &on_removed2);
-  ASSERT_EQ(0, on_removed2.wait());
-
-  // Shutdown instance watcher 1
-  expect_release_lock(mock_managed_lock, 0);
-  expect_unregister_watch(mock_io_ctx1);
-  expect_unregister_instance(mock_io_ctx1, 0);
-  instance_watcher1->shut_down();
-
-  expect_destroy_lock(mock_managed_lock);
-  delete instance_watcher1;
-
-  // Shutdown instance watcher 2
-  expect_release_lock(mock_managed_lock, 0);
-  expect_unregister_watch(mock_io_ctx2);
-  expect_unregister_instance(mock_io_ctx2, 0);
-  instance_watcher2->shut_down();
-
-  expect_destroy_lock(mock_managed_lock);
-  delete instance_watcher2;
-}
-
-TEST_F(TestMockInstanceWatcher, ImageAcquireReleaseCancel) {
-  MockManagedLock mock_managed_lock;
-  librados::MockTestMemIoCtxImpl &mock_io_ctx(get_mock_io_ctx(m_local_io_ctx));
-
-  auto instance_watcher = new MockInstanceWatcher(
-    m_local_io_ctx, m_mock_threads->work_queue, nullptr, m_instance_id);
-  InSequence seq;
-
-  // Init
-  expect_register_instance(mock_io_ctx, 0);
-  expect_register_watch(mock_io_ctx);
-  expect_acquire_lock(mock_managed_lock, 0);
-  ASSERT_EQ(0, instance_watcher->init());
-
-  // Send Acquire Image and cancel
-  EXPECT_CALL(mock_io_ctx, aio_notify(_, _, _, _, _))
-    .WillOnce(Invoke(
-                  [this, instance_watcher, &mock_io_ctx](
-                    const std::string& o, librados::AioCompletionImpl *c,
-                    bufferlist& bl, uint64_t timeout_ms, bufferlist *pbl) {
-                    c->get();
-                    auto ctx = new FunctionContext(
-                      [instance_watcher, &mock_io_ctx, c, pbl](int r) {
-                        instance_watcher->cancel_notify_requests("other");
-                        ::encode(librbd::watcher::NotifyResponse(), *pbl);
-                        mock_io_ctx.get_mock_rados_client()->
-                            finish_aio_completion(c, -ETIMEDOUT);
-                      });
-                    m_threads->work_queue->queue(ctx, 0);
-                  }));
-
-  C_SaferCond on_acquire;
-  instance_watcher->notify_image_acquire("other", "gid", &on_acquire);
-  ASSERT_EQ(-ECANCELED, on_acquire.wait());
-
-  // Send Release Image and cancel
-  EXPECT_CALL(mock_io_ctx, aio_notify(_, _, _, _, _))
-    .WillOnce(Invoke(
-                  [this, instance_watcher, &mock_io_ctx](
-                    const std::string& o, librados::AioCompletionImpl *c,
-                    bufferlist& bl, uint64_t timeout_ms, bufferlist *pbl) {
-                    c->get();
-                    auto ctx = new FunctionContext(
-                      [instance_watcher, &mock_io_ctx, c, pbl](int r) {
-                        instance_watcher->cancel_notify_requests("other");
-                        ::encode(librbd::watcher::NotifyResponse(), *pbl);
-                        mock_io_ctx.get_mock_rados_client()->
-                            finish_aio_completion(c, -ETIMEDOUT);
-                      });
-                    m_threads->work_queue->queue(ctx, 0);
-                  }));
-
-  C_SaferCond on_release;
-  instance_watcher->notify_image_release("other", "gid", &on_release);
-  ASSERT_EQ(-ECANCELED, on_release.wait());
-
-  // Shutdown
-  expect_release_lock(mock_managed_lock, 0);
-  expect_unregister_watch(mock_io_ctx);
-  expect_unregister_instance(mock_io_ctx, 0);
-  instance_watcher->shut_down();
-
-  expect_destroy_lock(mock_managed_lock);
-  delete instance_watcher;
-}
-
-TEST_F(TestMockInstanceWatcher, PeerImageRemovedCancel) {
-  MockManagedLock mock_managed_lock;
-  librados::MockTestMemIoCtxImpl &mock_io_ctx(get_mock_io_ctx(m_local_io_ctx));
-
-  auto instance_watcher = new MockInstanceWatcher(
-    m_local_io_ctx, m_mock_threads->work_queue, nullptr, m_instance_id);
-  InSequence seq;
-
-  // Init
-  expect_register_instance(mock_io_ctx, 0);
-  expect_register_watch(mock_io_ctx);
-  expect_acquire_lock(mock_managed_lock, 0);
-  ASSERT_EQ(0, instance_watcher->init());
-
-  // Send Acquire Image and cancel
-  EXPECT_CALL(mock_io_ctx, aio_notify(_, _, _, _, _))
-    .WillOnce(Invoke(
-                  [this, instance_watcher, &mock_io_ctx](
-                    const std::string& o, librados::AioCompletionImpl *c,
-                    bufferlist& bl, uint64_t timeout_ms, bufferlist *pbl) {
-                    c->get();
-                    auto ctx = new FunctionContext(
-                      [instance_watcher, &mock_io_ctx, c, pbl](int r) {
-                        instance_watcher->cancel_notify_requests("other");
-                        ::encode(librbd::watcher::NotifyResponse(), *pbl);
-                        mock_io_ctx.get_mock_rados_client()->
-                            finish_aio_completion(c, -ETIMEDOUT);
-                      });
-                    m_threads->work_queue->queue(ctx, 0);
-                  }));
-
-  C_SaferCond on_acquire;
-  instance_watcher->notify_peer_image_removed("other", "gid", "uuid",
-                                              &on_acquire);
-  ASSERT_EQ(-ECANCELED, on_acquire.wait());
-
-  // Shutdown
-  expect_release_lock(mock_managed_lock, 0);
-  expect_unregister_watch(mock_io_ctx);
-  expect_unregister_instance(mock_io_ctx, 0);
-  instance_watcher->shut_down();
-
-  expect_destroy_lock(mock_managed_lock);
-  delete instance_watcher;
-}
-
-
-class TestMockInstanceWatcher_NotifySync : public TestMockInstanceWatcher {
-public:
-  typedef ImageSyncThrottler<librbd::MockTestImageCtx> MockImageSyncThrottler;
-
-  MockManagedLock mock_managed_lock;
-  MockImageSyncThrottler mock_image_sync_throttler;
-  std::string instance_id1;
-  std::string instance_id2;
-
-  librados::Rados cluster;
-  librados::IoCtx io_ctx2;
-
-  MockInstanceWatcher *instance_watcher1;
-  MockInstanceWatcher *instance_watcher2;
-
-  void SetUp() override {
-    TestMockInstanceWatcher::SetUp();
-
-    instance_id1 = m_instance_id;
-    librados::IoCtx& io_ctx1 = m_local_io_ctx;
-    librados::MockTestMemIoCtxImpl &mock_io_ctx1(get_mock_io_ctx(io_ctx1));
-    instance_watcher1 = MockInstanceWatcher::create(io_ctx1,
-                                                    m_mock_threads->work_queue,
-                                                    nullptr);
-    EXPECT_EQ("", connect_cluster_pp(cluster));
-    EXPECT_EQ(0, cluster.ioctx_create(_local_pool_name.c_str(), io_ctx2));
-    instance_id2 = stringify(io_ctx2.get_instance_id());
-    librados::MockTestMemIoCtxImpl &mock_io_ctx2(get_mock_io_ctx(io_ctx2));
-    instance_watcher2 = MockInstanceWatcher::create(io_ctx2,
-                                                    m_mock_threads->work_queue,
-                                                    nullptr);
-    InSequence seq;
-
-    // Init instance watcher 1 (leader)
-    expect_register_instance(mock_io_ctx1, 0);
-    expect_register_watch(mock_io_ctx1, instance_id1);
-    expect_acquire_lock(mock_managed_lock, 0);
-    EXPECT_EQ(0, instance_watcher1->init());
-    instance_watcher1->handle_acquire_leader();
-
-    // Init instance watcher 2
-    expect_register_instance(mock_io_ctx2, 0);
-    expect_register_watch(mock_io_ctx2, instance_id2);
-    expect_acquire_lock(mock_managed_lock, 0);
-    EXPECT_EQ(0, instance_watcher2->init());
-    instance_watcher2->handle_update_leader(instance_id1);
-  }
-
-  void TearDown() override {
-    librados::IoCtx& io_ctx1 = m_local_io_ctx;
-    librados::MockTestMemIoCtxImpl &mock_io_ctx1(get_mock_io_ctx(io_ctx1));
-    librados::MockTestMemIoCtxImpl &mock_io_ctx2(get_mock_io_ctx(io_ctx2));
-
-    InSequence seq;
-
-    expect_throttler_destroy();
-    instance_watcher1->handle_release_leader();
-
-    // Shutdown instance watcher 1
-    expect_release_lock(mock_managed_lock, 0);
-    expect_unregister_watch(mock_io_ctx1);
-    expect_unregister_instance(mock_io_ctx1, 0);
-    instance_watcher1->shut_down();
-
-    expect_destroy_lock(mock_managed_lock);
-    delete instance_watcher1;
-
-    // Shutdown instance watcher 2
-    expect_release_lock(mock_managed_lock, 0);
-    expect_unregister_watch(mock_io_ctx2);
-    expect_unregister_instance(mock_io_ctx2, 0);
-    instance_watcher2->shut_down();
-
-    expect_destroy_lock(mock_managed_lock);
-    delete instance_watcher2;
-
-    TestMockInstanceWatcher::TearDown();
-  }
-
-  void expect_throttler_destroy(
-      std::vector<Context *> *throttler_queue = nullptr) {
-    EXPECT_CALL(mock_image_sync_throttler, drain(-ESTALE))
-        .WillOnce(Invoke([throttler_queue] (int r) {
-              if (throttler_queue != nullptr) {
-                for (auto ctx : *throttler_queue) {
-                  ctx->complete(r);
-                }
-              }
-            }));
-    EXPECT_CALL(mock_image_sync_throttler, destroy());
-  }
-
-  void expect_throttler_start_op(const std::string &sync_id,
-                                 Context *on_call = nullptr,
-                                 Context **on_start_ctx = nullptr) {
-    EXPECT_CALL(mock_image_sync_throttler, start_op(sync_id, _))
-        .WillOnce(Invoke([on_call, on_start_ctx] (const std::string &,
-                                                  Context *ctx) {
-                           if (on_call != nullptr) {
-                             on_call->complete(0);
-                           }
-                           if (on_start_ctx != nullptr) {
-                             *on_start_ctx = ctx;
-                           } else {
-                             ctx->complete(0);
-                           }
-                         }));
-  }
-
-  void expect_throttler_finish_op(const std::string &sync_id,
-                                  Context *on_finish) {
-    EXPECT_CALL(mock_image_sync_throttler, finish_op("sync_id"))
-        .WillOnce(Invoke([on_finish](const std::string &) {
-              on_finish->complete(0);
-            }));
-  }
-};
-
-TEST_F(TestMockInstanceWatcher_NotifySync, StartStopOnLeader) {
-  InSequence seq;
-
-  expect_throttler_start_op("sync_id");
-  C_SaferCond on_start;
-  instance_watcher1->notify_sync_request("sync_id", &on_start);
-  ASSERT_EQ(0, on_start.wait());
-
-  C_SaferCond on_finish;
-  expect_throttler_finish_op("sync_id", &on_finish);
-  instance_watcher1->notify_sync_complete("sync_id");
-  ASSERT_EQ(0, on_finish.wait());
-}
-
-TEST_F(TestMockInstanceWatcher_NotifySync, CancelStartedOnLeader) {
-  InSequence seq;
-
-  expect_throttler_start_op("sync_id");
-  C_SaferCond on_start;
-  instance_watcher1->notify_sync_request("sync_id", &on_start);
-  ASSERT_EQ(0, on_start.wait());
-
-  ASSERT_FALSE(instance_watcher1->cancel_sync_request("sync_id"));
-
-  C_SaferCond on_finish;
-  expect_throttler_finish_op("sync_id", &on_finish);
-  instance_watcher1->notify_sync_complete("sync_id");
-  ASSERT_EQ(0, on_finish.wait());
-}
-
-TEST_F(TestMockInstanceWatcher_NotifySync, StartStopOnNonLeader) {
-  InSequence seq;
-
-  expect_throttler_start_op("sync_id");
-  C_SaferCond on_start;
-  instance_watcher2->notify_sync_request("sync_id", &on_start);
-  ASSERT_EQ(0, on_start.wait());
-
-  C_SaferCond on_finish;
-  expect_throttler_finish_op("sync_id", &on_finish);
-  instance_watcher2->notify_sync_complete("sync_id");
-  ASSERT_EQ(0, on_finish.wait());
-}
-
-TEST_F(TestMockInstanceWatcher_NotifySync, CancelStartedOnNonLeader) {
-  InSequence seq;
-
-  expect_throttler_start_op("sync_id");
-  C_SaferCond on_start;
-  instance_watcher2->notify_sync_request("sync_id", &on_start);
-  ASSERT_EQ(0, on_start.wait());
-
-  ASSERT_FALSE(instance_watcher2->cancel_sync_request("sync_id"));
-
-  C_SaferCond on_finish;
-  expect_throttler_finish_op("sync_id", &on_finish);
-  instance_watcher2->notify_sync_complete("sync_id");
-  ASSERT_EQ(0, on_finish.wait());
-}
-
-TEST_F(TestMockInstanceWatcher_NotifySync, CancelWaitingOnNonLeader) {
-  InSequence seq;
-
-  C_SaferCond on_start_op_called;
-  Context *on_start_ctx;
-  expect_throttler_start_op("sync_id", &on_start_op_called,
-                                          &on_start_ctx);
-  C_SaferCond on_start;
-  instance_watcher2->notify_sync_request("sync_id", &on_start);
-  ASSERT_EQ(0, on_start_op_called.wait());
-
-  ASSERT_TRUE(instance_watcher2->cancel_sync_request("sync_id"));
-  // emulate watcher timeout
-  on_start_ctx->complete(-ETIMEDOUT);
-  ASSERT_EQ(-ECANCELED, on_start.wait());
-}
-
-TEST_F(TestMockInstanceWatcher_NotifySync, InFlightPrevNotification) {
-  // start sync when previous notification is still in flight
-
-  InSequence seq;
-
-  expect_throttler_start_op("sync_id");
-  C_SaferCond on_start1;
-  instance_watcher2->notify_sync_request("sync_id", &on_start1);
-  ASSERT_EQ(0, on_start1.wait());
-
-  C_SaferCond on_start2;
-  EXPECT_CALL(mock_image_sync_throttler, finish_op("sync_id"))
-      .WillOnce(Invoke([this, &on_start2](const std::string &) {
-            instance_watcher2->notify_sync_request("sync_id", &on_start2);
-          }));
-  expect_throttler_start_op("sync_id");
-  instance_watcher2->notify_sync_complete("sync_id");
-
-  ASSERT_EQ(0, on_start2.wait());
-  C_SaferCond on_finish;
-  expect_throttler_finish_op("sync_id", &on_finish);
-  instance_watcher2->notify_sync_complete("sync_id");
-  ASSERT_EQ(0, on_finish.wait());
-}
-
-TEST_F(TestMockInstanceWatcher_NotifySync, NoInFlightReleaseAcquireLeader) {
-  InSequence seq;
-
-  expect_throttler_destroy();
-  instance_watcher1->handle_release_leader();
-  instance_watcher1->handle_acquire_leader();
-}
-
-TEST_F(TestMockInstanceWatcher_NotifySync, StartedOnLeaderReleaseLeader) {
-  InSequence seq;
-
-  expect_throttler_destroy();
-  instance_watcher1->handle_release_leader();
-  instance_watcher2->handle_acquire_leader();
-
-  expect_throttler_start_op("sync_id");
-  C_SaferCond on_start;
-  instance_watcher2->notify_sync_request("sync_id", &on_start);
-  ASSERT_EQ(0, on_start.wait());
-  expect_throttler_destroy();
-  instance_watcher2->handle_release_leader();
-  instance_watcher2->notify_sync_complete("sync_id");
-
-  instance_watcher1->handle_acquire_leader();
-}
-
-TEST_F(TestMockInstanceWatcher_NotifySync, WaitingOnLeaderReleaseLeader) {
-  InSequence seq;
-
-  C_SaferCond on_start_op_called;
-  Context *on_start_ctx;
-  expect_throttler_start_op("sync_id", &on_start_op_called,
-                                          &on_start_ctx);
-  C_SaferCond on_start;
-  instance_watcher1->notify_sync_request("sync_id", &on_start);
-  ASSERT_EQ(0, on_start_op_called.wait());
-
-  std::vector<Context *> throttler_queue = {on_start_ctx};
-  expect_throttler_destroy(&throttler_queue);
-  instance_watcher1->handle_release_leader();
-  instance_watcher2->handle_acquire_leader();
-  instance_watcher1->handle_update_leader(instance_id2);
-
-  expect_throttler_start_op("sync_id");
-  ASSERT_EQ(0, on_start.wait());
-  C_SaferCond on_finish;
-  expect_throttler_finish_op("sync_id", &on_finish);
-  instance_watcher1->notify_sync_complete("sync_id");
-  ASSERT_EQ(0, on_finish.wait());
-
-  expect_throttler_destroy();
-  instance_watcher2->handle_release_leader();
-  instance_watcher1->handle_acquire_leader();
-}
-
-TEST_F(TestMockInstanceWatcher_NotifySync, StartedOnNonLeaderAcquireLeader) {
-  InSequence seq;
-
-  expect_throttler_destroy();
-  instance_watcher1->handle_release_leader();
-  instance_watcher2->handle_acquire_leader();
-  instance_watcher1->handle_update_leader(instance_id2);
-
-  expect_throttler_start_op("sync_id");
-  C_SaferCond on_start;
-  instance_watcher1->notify_sync_request("sync_id", &on_start);
-  ASSERT_EQ(0, on_start.wait());
-
-  expect_throttler_destroy();
-  instance_watcher2->handle_release_leader();
-  instance_watcher1->handle_acquire_leader();
-  instance_watcher2->handle_update_leader(instance_id2);
-
-  instance_watcher1->notify_sync_complete("sync_id");
-}
-
-TEST_F(TestMockInstanceWatcher_NotifySync, WaitingOnNonLeaderAcquireLeader) {
-  InSequence seq;
-
-  C_SaferCond on_start_op_called;
-  Context *on_start_ctx;
-  expect_throttler_start_op("sync_id", &on_start_op_called,
-                                          &on_start_ctx);
-  C_SaferCond on_start;
-  instance_watcher2->notify_sync_request("sync_id", &on_start);
-  ASSERT_EQ(0, on_start_op_called.wait());
-
-  std::vector<Context *> throttler_queue = {on_start_ctx};
-  expect_throttler_destroy(&throttler_queue);
-  instance_watcher1->handle_release_leader();
-
-  EXPECT_CALL(mock_image_sync_throttler, start_op("sync_id", _))
-      .WillOnce(WithArg<1>(CompleteContext(0)));
-  instance_watcher2->handle_acquire_leader();
-  instance_watcher1->handle_update_leader(instance_id2);
-
-  ASSERT_EQ(0, on_start.wait());
-
-  C_SaferCond on_finish;
-  expect_throttler_finish_op("sync_id", &on_finish);
-  instance_watcher2->notify_sync_complete("sync_id");
-  ASSERT_EQ(0, on_finish.wait());
-
-  expect_throttler_destroy();
-  instance_watcher2->handle_release_leader();
-  instance_watcher1->handle_acquire_leader();
-}
-
-} // namespace mirror
-} // namespace rbd