diff options
Diffstat (limited to 'src/test/librbd/test_mock_ExclusiveLock.cc')
| -rw-r--r-- | src/test/librbd/test_mock_ExclusiveLock.cc | 723 |
1 files changed, 723 insertions, 0 deletions
diff --git a/src/test/librbd/test_mock_ExclusiveLock.cc b/src/test/librbd/test_mock_ExclusiveLock.cc new file mode 100644 index 00000000..dbdb12e7 --- /dev/null +++ b/src/test/librbd/test_mock_ExclusiveLock.cc @@ -0,0 +1,723 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab + +#include "test/librbd/test_mock_fixture.h" +#include "test/librbd/test_support.h" +#include "test/librbd/mock/MockImageCtx.h" +#include "test/librbd/mock/exclusive_lock/MockPolicy.h" +#include "librbd/ExclusiveLock.h" +#include "librbd/ManagedLock.h" +#include "librbd/exclusive_lock/PreAcquireRequest.h" +#include "librbd/exclusive_lock/PostAcquireRequest.h" +#include "librbd/exclusive_lock/PreReleaseRequest.h" +#include "gmock/gmock.h" +#include "gtest/gtest.h" +#include <list> + +namespace librbd { + +namespace { + +struct MockExclusiveLockImageCtx : public MockImageCtx { + ContextWQ *op_work_queue; + + MockExclusiveLockImageCtx(ImageCtx &image_ctx) : MockImageCtx(image_ctx) { + op_work_queue = image_ctx.op_work_queue; + } +}; + +} // anonymous namespace + +namespace watcher { +template <> +struct Traits<MockExclusiveLockImageCtx> { + typedef librbd::MockImageWatcher Watcher; +}; +} + +template <> +struct ManagedLock<MockExclusiveLockImageCtx> { + ManagedLock(librados::IoCtx& ioctx, ContextWQ *work_queue, + const std::string& oid, librbd::MockImageWatcher *watcher, + managed_lock::Mode mode, bool blacklist_on_break_lock, + uint32_t blacklist_expire_seconds) + : m_lock("ManagedLock::m_lock") { + } + + virtual ~ManagedLock() = default; + + mutable Mutex m_lock; + + virtual void shutdown_handler(int r, Context *) = 0; + virtual void pre_acquire_lock_handler(Context *) = 0; + virtual void post_acquire_lock_handler(int, Context *) = 0; + virtual void pre_release_lock_handler(bool, Context *) = 0; + virtual void post_release_lock_handler(bool, int, Context *) = 0; + virtual void post_reacquire_lock_handler(int, Context *) = 0; + + MOCK_CONST_METHOD0(is_lock_owner, bool()); + + MOCK_METHOD1(shut_down, void(Context*)); + MOCK_METHOD1(acquire_lock, void(Context*)); + + void set_state_uninitialized() { + } + + MOCK_METHOD0(set_state_initializing, void()); + MOCK_METHOD0(set_state_unlocked, void()); + MOCK_METHOD0(set_state_waiting_for_lock, void()); + MOCK_METHOD0(set_state_post_acquiring, void()); + + MOCK_CONST_METHOD0(is_state_shutdown, bool()); + MOCK_CONST_METHOD0(is_state_acquiring, bool()); + MOCK_CONST_METHOD0(is_state_post_acquiring, bool()); + MOCK_CONST_METHOD0(is_state_releasing, bool()); + MOCK_CONST_METHOD0(is_state_pre_releasing, bool()); + MOCK_CONST_METHOD0(is_state_locked, bool()); + MOCK_CONST_METHOD0(is_state_waiting_for_lock, bool()); + + MOCK_CONST_METHOD0(is_action_acquire_lock, bool()); + MOCK_METHOD0(execute_next_action, void()); + +}; + +namespace exclusive_lock { + +using librbd::ImageWatcher; + +template<typename T> +struct BaseRequest { + static std::list<T *> s_requests; + Context *on_lock_unlock = nullptr; + Context *on_finish = nullptr; + + static T* create(MockExclusiveLockImageCtx &image_ctx, + Context *on_lock_unlock, Context *on_finish) { + ceph_assert(!s_requests.empty()); + T* req = s_requests.front(); + req->on_lock_unlock = on_lock_unlock; + req->on_finish = on_finish; + s_requests.pop_front(); + return req; + } + + BaseRequest() { + s_requests.push_back(reinterpret_cast<T*>(this)); + } +}; + +template<typename T> +std::list<T *> BaseRequest<T>::s_requests; + +template <> +struct PreAcquireRequest<MockExclusiveLockImageCtx> : public BaseRequest<PreAcquireRequest<MockExclusiveLockImageCtx> > { + static PreAcquireRequest<MockExclusiveLockImageCtx> *create( + MockExclusiveLockImageCtx &image_ctx, Context *on_finish) { + return BaseRequest::create(image_ctx, nullptr, on_finish); + } + MOCK_METHOD0(send, void()); +}; + +template <> +struct PostAcquireRequest<MockExclusiveLockImageCtx> : public BaseRequest<PostAcquireRequest<MockExclusiveLockImageCtx> > { + MOCK_METHOD0(send, void()); +}; + +template <> +struct PreReleaseRequest<MockExclusiveLockImageCtx> : public BaseRequest<PreReleaseRequest<MockExclusiveLockImageCtx> > { + static PreReleaseRequest<MockExclusiveLockImageCtx> *create( + MockExclusiveLockImageCtx &image_ctx, bool shutting_down, + AsyncOpTracker &async_op_tracker, Context *on_finish) { + return BaseRequest::create(image_ctx, nullptr, on_finish); + } + MOCK_METHOD0(send, void()); +}; + +} // namespace exclusive_lock +} // namespace librbd + +// template definitions +#include "librbd/ExclusiveLock.cc" + +ACTION_P(FinishLockUnlock, request) { + if (request->on_lock_unlock != nullptr) { + request->on_lock_unlock->complete(0); + } +} + +ACTION_P2(CompleteRequest, request, ret) { + request->on_finish->complete(ret); +} + +namespace librbd { + +using ::testing::_; +using ::testing::DoAll; +using ::testing::Invoke; +using ::testing::InSequence; +using ::testing::Return; + +class TestMockExclusiveLock : public TestMockFixture { +public: + typedef ManagedLock<MockExclusiveLockImageCtx> MockManagedLock; + typedef ExclusiveLock<MockExclusiveLockImageCtx> MockExclusiveLock; + typedef exclusive_lock::PreAcquireRequest<MockExclusiveLockImageCtx> MockPreAcquireRequest; + typedef exclusive_lock::PostAcquireRequest<MockExclusiveLockImageCtx> MockPostAcquireRequest; + typedef exclusive_lock::PreReleaseRequest<MockExclusiveLockImageCtx> MockPreReleaseRequest; + + void expect_set_state_initializing(MockManagedLock &managed_lock) { + EXPECT_CALL(managed_lock, set_state_initializing()); + } + + void expect_set_state_unlocked(MockManagedLock &managed_lock) { + EXPECT_CALL(managed_lock, set_state_unlocked()); + } + + void expect_set_state_waiting_for_lock(MockManagedLock &managed_lock) { + EXPECT_CALL(managed_lock, set_state_waiting_for_lock()); + } + + void expect_set_state_post_acquiring(MockManagedLock &managed_lock) { + EXPECT_CALL(managed_lock, set_state_post_acquiring()); + } + + void expect_is_state_acquiring(MockManagedLock &managed_lock, bool ret_val) { + EXPECT_CALL(managed_lock, is_state_acquiring()) + .WillOnce(Return(ret_val)); + } + + void expect_is_state_waiting_for_lock(MockManagedLock &managed_lock, + bool ret_val) { + EXPECT_CALL(managed_lock, is_state_waiting_for_lock()) + .WillOnce(Return(ret_val)); + } + + void expect_is_state_pre_releasing(MockManagedLock &managed_lock, + bool ret_val) { + EXPECT_CALL(managed_lock, is_state_pre_releasing()) + .WillOnce(Return(ret_val)); + } + + void expect_is_state_releasing(MockManagedLock &managed_lock, bool ret_val) { + EXPECT_CALL(managed_lock, is_state_releasing()) + .WillOnce(Return(ret_val)); + } + + void expect_is_state_locked(MockManagedLock &managed_lock, bool ret_val) { + EXPECT_CALL(managed_lock, is_state_locked()) + .WillOnce(Return(ret_val)); + } + + void expect_is_state_shutdown(MockManagedLock &managed_lock, bool ret_val) { + EXPECT_CALL(managed_lock, is_state_shutdown()) + .WillOnce(Return(ret_val)); + } + + void expect_is_action_acquire_lock(MockManagedLock &managed_lock, + bool ret_val) { + EXPECT_CALL(managed_lock, is_action_acquire_lock()) + .WillOnce(Return(ret_val)); + } + + void expect_set_require_lock(MockExclusiveLockImageCtx &mock_image_ctx, + io::Direction direction, bool enabled) { + EXPECT_CALL(*mock_image_ctx.io_work_queue, set_require_lock(direction, + enabled)); + } + + void expect_block_writes(MockExclusiveLockImageCtx &mock_image_ctx) { + EXPECT_CALL(*mock_image_ctx.io_work_queue, block_writes(_)) + .WillOnce(CompleteContext(0, mock_image_ctx.image_ctx->op_work_queue)); + if (mock_image_ctx.clone_copy_on_read || + (mock_image_ctx.features & RBD_FEATURE_JOURNALING) != 0) { + expect_set_require_lock(mock_image_ctx, io::DIRECTION_BOTH, true); + } else { + expect_set_require_lock(mock_image_ctx, io::DIRECTION_WRITE, true); + } + } + + void expect_unblock_writes(MockExclusiveLockImageCtx &mock_image_ctx) { + expect_set_require_lock(mock_image_ctx, io::DIRECTION_BOTH, false); + EXPECT_CALL(*mock_image_ctx.io_work_queue, unblock_writes()); + } + + void expect_prepare_lock_complete(MockExclusiveLockImageCtx &mock_image_ctx) { + EXPECT_CALL(*mock_image_ctx.state, handle_prepare_lock_complete()); + } + + void expect_pre_acquire_request(MockPreAcquireRequest &pre_acquire_request, + int r) { + EXPECT_CALL(pre_acquire_request, send()) + .WillOnce(CompleteRequest(&pre_acquire_request, r)); + } + + void expect_post_acquire_request(MockExclusiveLock &mock_exclusive_lock, + MockPostAcquireRequest &post_acquire_request, + int r) { + EXPECT_CALL(post_acquire_request, send()) + .WillOnce(DoAll(FinishLockUnlock(&post_acquire_request), + CompleteRequest(&post_acquire_request, r))); + expect_set_state_post_acquiring(mock_exclusive_lock); + } + + void expect_pre_release_request(MockPreReleaseRequest &pre_release_request, + int r) { + EXPECT_CALL(pre_release_request, send()) + .WillOnce(CompleteRequest(&pre_release_request, r)); + } + + void expect_notify_request_lock(MockExclusiveLockImageCtx &mock_image_ctx, + MockExclusiveLock &mock_exclusive_lock) { + EXPECT_CALL(*mock_image_ctx.image_watcher, notify_request_lock()); + } + + void expect_notify_acquired_lock(MockExclusiveLockImageCtx &mock_image_ctx) { + EXPECT_CALL(*mock_image_ctx.image_watcher, notify_acquired_lock()) + .Times(1); + } + + void expect_notify_released_lock(MockExclusiveLockImageCtx &mock_image_ctx) { + EXPECT_CALL(*mock_image_ctx.image_watcher, notify_released_lock()) + .Times(1); + } + + void expect_flush_notifies(MockExclusiveLockImageCtx &mock_image_ctx) { + EXPECT_CALL(*mock_image_ctx.image_watcher, flush(_)) + .WillOnce(CompleteContext(0, mock_image_ctx.image_ctx->op_work_queue)); + } + + void expect_shut_down(MockManagedLock &managed_lock) { + EXPECT_CALL(managed_lock, shut_down(_)) + .WillOnce(CompleteContext(0, static_cast<ContextWQ*>(nullptr))); + } + + void expect_accept_blocked_request( + MockExclusiveLockImageCtx &mock_image_ctx, + exclusive_lock::MockPolicy &policy, + exclusive_lock::OperationRequestType request_type, bool value) { + EXPECT_CALL(mock_image_ctx, get_exclusive_lock_policy()) + .WillOnce(Return(&policy)); + EXPECT_CALL(policy, accept_blocked_request(request_type)) + .WillOnce(Return(value)); + } + + int when_init(MockExclusiveLockImageCtx &mock_image_ctx, + MockExclusiveLock &exclusive_lock) { + C_SaferCond ctx; + { + RWLock::WLocker owner_locker(mock_image_ctx.owner_lock); + exclusive_lock.init(mock_image_ctx.features, &ctx); + } + return ctx.wait(); + } + + int when_pre_acquire_lock_handler(MockManagedLock &managed_lock) { + C_SaferCond ctx; + managed_lock.pre_acquire_lock_handler(&ctx); + return ctx.wait(); + } + + int when_post_acquire_lock_handler(MockManagedLock &managed_lock, int r) { + C_SaferCond ctx; + managed_lock.post_acquire_lock_handler(r, &ctx); + return ctx.wait(); + } + + int when_pre_release_lock_handler(MockManagedLock &managed_lock, + bool shutting_down) { + C_SaferCond ctx; + managed_lock.pre_release_lock_handler(shutting_down, &ctx); + return ctx.wait(); + } + + int when_post_release_lock_handler(MockManagedLock &managed_lock, + bool shutting_down, int r) { + C_SaferCond ctx; + managed_lock.post_release_lock_handler(shutting_down, r, &ctx); + return ctx.wait(); + } + + int when_post_reacquire_lock_handler(MockManagedLock &managed_lock, int r) { + C_SaferCond ctx; + managed_lock.post_reacquire_lock_handler(r, &ctx); + return ctx.wait(); + } + + int when_shut_down(MockExclusiveLockImageCtx &mock_image_ctx, + MockExclusiveLock &exclusive_lock) { + C_SaferCond ctx; + { + RWLock::WLocker owner_locker(mock_image_ctx.owner_lock); + exclusive_lock.shut_down(&ctx); + } + return ctx.wait(); + } + + bool is_lock_owner(MockExclusiveLockImageCtx &mock_image_ctx, + MockExclusiveLock &exclusive_lock) { + RWLock::RLocker owner_locker(mock_image_ctx.owner_lock); + return exclusive_lock.is_lock_owner(); + } +}; + +TEST_F(TestMockExclusiveLock, StateTransitions) { + REQUIRE_FEATURE(RBD_FEATURE_EXCLUSIVE_LOCK); + + librbd::ImageCtx *ictx; + ASSERT_EQ(0, open_image(m_image_name, &ictx)); + + MockExclusiveLockImageCtx mock_image_ctx(*ictx); + MockExclusiveLock exclusive_lock(mock_image_ctx); + expect_op_work_queue(mock_image_ctx); + + InSequence seq; + expect_set_state_initializing(exclusive_lock); + expect_block_writes(mock_image_ctx); + expect_set_state_unlocked(exclusive_lock); + ASSERT_EQ(0, when_init(mock_image_ctx, exclusive_lock)); + + // (try) acquire lock + MockPreAcquireRequest try_lock_pre_acquire; + expect_pre_acquire_request(try_lock_pre_acquire, 0); + ASSERT_EQ(0, when_pre_acquire_lock_handler(exclusive_lock)); + + MockPostAcquireRequest try_lock_post_acquire; + expect_post_acquire_request(exclusive_lock, try_lock_post_acquire, 0); + expect_is_state_acquiring(exclusive_lock, true); + expect_notify_acquired_lock(mock_image_ctx); + expect_unblock_writes(mock_image_ctx); + ASSERT_EQ(0, when_post_acquire_lock_handler(exclusive_lock, 0)); + + // release lock + MockPreReleaseRequest pre_request_release; + expect_pre_release_request(pre_request_release, 0); + ASSERT_EQ(0, when_pre_release_lock_handler(exclusive_lock, false)); + + expect_is_state_pre_releasing(exclusive_lock, false); + expect_is_state_releasing(exclusive_lock, true); + expect_notify_released_lock(mock_image_ctx); + ASSERT_EQ(0, when_post_release_lock_handler(exclusive_lock, false, 0)); + + // (try) acquire lock + MockPreAcquireRequest request_lock_pre_acquire; + expect_pre_acquire_request(request_lock_pre_acquire, 0); + ASSERT_EQ(0, when_pre_acquire_lock_handler(exclusive_lock)); + + MockPostAcquireRequest request_lock_post_acquire; + expect_post_acquire_request(exclusive_lock, request_lock_post_acquire, 0); + expect_is_state_acquiring(exclusive_lock, true); + expect_notify_acquired_lock(mock_image_ctx); + expect_unblock_writes(mock_image_ctx); + ASSERT_EQ(0, when_post_acquire_lock_handler(exclusive_lock, 0)); + + // shut down (and release) + expect_shut_down(exclusive_lock); + expect_is_state_waiting_for_lock(exclusive_lock, false); + ASSERT_EQ(0, when_shut_down(mock_image_ctx, exclusive_lock)); + + MockPreReleaseRequest shutdown_pre_release; + expect_pre_release_request(shutdown_pre_release, 0); + ASSERT_EQ(0, when_pre_release_lock_handler(exclusive_lock, true)); + + expect_unblock_writes(mock_image_ctx); + expect_notify_released_lock(mock_image_ctx); + ASSERT_EQ(0, when_post_release_lock_handler(exclusive_lock, true, 0)); +} + +TEST_F(TestMockExclusiveLock, TryLockAlreadyLocked) { + REQUIRE_FEATURE(RBD_FEATURE_EXCLUSIVE_LOCK); + + librbd::ImageCtx *ictx; + ASSERT_EQ(0, open_image(m_image_name, &ictx)); + + MockExclusiveLockImageCtx mock_image_ctx(*ictx); + MockExclusiveLock exclusive_lock(mock_image_ctx); + expect_op_work_queue(mock_image_ctx); + + InSequence seq; + expect_set_state_initializing(exclusive_lock); + expect_block_writes(mock_image_ctx); + expect_set_state_unlocked(exclusive_lock); + ASSERT_EQ(0, when_init(mock_image_ctx, exclusive_lock)); + + // try acquire lock + MockPreAcquireRequest try_lock_pre_acquire; + expect_pre_acquire_request(try_lock_pre_acquire, 0); + ASSERT_EQ(0, when_pre_acquire_lock_handler(exclusive_lock)); + + expect_is_state_acquiring(exclusive_lock, true); + expect_prepare_lock_complete(mock_image_ctx); + expect_is_action_acquire_lock(exclusive_lock, false); + ASSERT_EQ(0, when_post_acquire_lock_handler(exclusive_lock, -EAGAIN)); +} + +TEST_F(TestMockExclusiveLock, TryLockError) { + REQUIRE_FEATURE(RBD_FEATURE_EXCLUSIVE_LOCK); + + librbd::ImageCtx *ictx; + ASSERT_EQ(0, open_image(m_image_name, &ictx)); + + MockExclusiveLockImageCtx mock_image_ctx(*ictx); + MockExclusiveLock exclusive_lock(mock_image_ctx); + expect_op_work_queue(mock_image_ctx); + + InSequence seq; + expect_set_state_initializing(exclusive_lock); + expect_block_writes(mock_image_ctx); + expect_set_state_unlocked(exclusive_lock); + ASSERT_EQ(0, when_init(mock_image_ctx, exclusive_lock)); + + // try acquire lock + MockPreAcquireRequest try_lock_pre_acquire; + expect_pre_acquire_request(try_lock_pre_acquire, 0); + ASSERT_EQ(0, when_pre_acquire_lock_handler(exclusive_lock)); + + expect_is_state_acquiring(exclusive_lock, true); + expect_prepare_lock_complete(mock_image_ctx); + expect_is_action_acquire_lock(exclusive_lock, false); + ASSERT_EQ(-EBUSY, when_post_acquire_lock_handler(exclusive_lock, -EBUSY)); +} + +TEST_F(TestMockExclusiveLock, AcquireLockAlreadyLocked) { + REQUIRE_FEATURE(RBD_FEATURE_EXCLUSIVE_LOCK); + + librbd::ImageCtx *ictx; + ASSERT_EQ(0, open_image(m_image_name, &ictx)); + + MockExclusiveLockImageCtx mock_image_ctx(*ictx); + MockExclusiveLock exclusive_lock(mock_image_ctx); + expect_op_work_queue(mock_image_ctx); + + InSequence seq; + expect_set_state_initializing(exclusive_lock); + expect_block_writes(mock_image_ctx); + expect_set_state_unlocked(exclusive_lock); + ASSERT_EQ(0, when_init(mock_image_ctx, exclusive_lock)); + + // acquire lock + MockPreAcquireRequest try_lock_pre_acquire; + expect_pre_acquire_request(try_lock_pre_acquire, 0); + ASSERT_EQ(0, when_pre_acquire_lock_handler(exclusive_lock)); + + expect_is_state_acquiring(exclusive_lock, true); + expect_prepare_lock_complete(mock_image_ctx); + expect_is_action_acquire_lock(exclusive_lock, true); + expect_set_state_waiting_for_lock(exclusive_lock); + expect_notify_request_lock(mock_image_ctx, exclusive_lock); + ASSERT_EQ(-ECANCELED, when_post_acquire_lock_handler(exclusive_lock, + -EAGAIN)); +} + +TEST_F(TestMockExclusiveLock, AcquireLockBusy) { + REQUIRE_FEATURE(RBD_FEATURE_EXCLUSIVE_LOCK); + + librbd::ImageCtx *ictx; + ASSERT_EQ(0, open_image(m_image_name, &ictx)); + + MockExclusiveLockImageCtx mock_image_ctx(*ictx); + MockExclusiveLock exclusive_lock(mock_image_ctx); + expect_op_work_queue(mock_image_ctx); + + InSequence seq; + expect_set_state_initializing(exclusive_lock); + expect_block_writes(mock_image_ctx); + expect_set_state_unlocked(exclusive_lock); + ASSERT_EQ(0, when_init(mock_image_ctx, exclusive_lock)); + + // acquire lock + MockPreAcquireRequest try_lock_pre_acquire; + expect_pre_acquire_request(try_lock_pre_acquire, 0); + ASSERT_EQ(0, when_pre_acquire_lock_handler(exclusive_lock)); + + expect_is_state_acquiring(exclusive_lock, true); + expect_prepare_lock_complete(mock_image_ctx); + expect_is_action_acquire_lock(exclusive_lock, true); + expect_set_state_waiting_for_lock(exclusive_lock); + expect_notify_request_lock(mock_image_ctx, exclusive_lock); + ASSERT_EQ(-ECANCELED, when_post_acquire_lock_handler(exclusive_lock, + -EBUSY)); +} + +TEST_F(TestMockExclusiveLock, AcquireLockError) { + REQUIRE_FEATURE(RBD_FEATURE_EXCLUSIVE_LOCK); + + librbd::ImageCtx *ictx; + ASSERT_EQ(0, open_image(m_image_name, &ictx)); + + MockExclusiveLockImageCtx mock_image_ctx(*ictx); + MockExclusiveLock exclusive_lock(mock_image_ctx); + expect_op_work_queue(mock_image_ctx); + + InSequence seq; + expect_set_state_initializing(exclusive_lock); + expect_block_writes(mock_image_ctx); + expect_set_state_unlocked(exclusive_lock); + ASSERT_EQ(0, when_init(mock_image_ctx, exclusive_lock)); + + // acquire lock + MockPreAcquireRequest try_lock_pre_acquire; + expect_pre_acquire_request(try_lock_pre_acquire, 0); + ASSERT_EQ(0, when_pre_acquire_lock_handler(exclusive_lock)); + + expect_is_state_acquiring(exclusive_lock, true); + expect_prepare_lock_complete(mock_image_ctx); + expect_is_action_acquire_lock(exclusive_lock, true); + ASSERT_EQ(-EBLACKLISTED, when_post_acquire_lock_handler(exclusive_lock, + -EBLACKLISTED)); +} + +TEST_F(TestMockExclusiveLock, PostAcquireLockError) { + REQUIRE_FEATURE(RBD_FEATURE_EXCLUSIVE_LOCK); + + librbd::ImageCtx *ictx; + ASSERT_EQ(0, open_image(m_image_name, &ictx)); + + MockExclusiveLockImageCtx mock_image_ctx(*ictx); + MockExclusiveLock exclusive_lock(mock_image_ctx); + expect_op_work_queue(mock_image_ctx); + + InSequence seq; + expect_set_state_initializing(exclusive_lock); + expect_block_writes(mock_image_ctx); + expect_set_state_unlocked(exclusive_lock); + ASSERT_EQ(0, when_init(mock_image_ctx, exclusive_lock)); + + // (try) acquire lock + MockPreAcquireRequest request_lock_pre_acquire; + expect_pre_acquire_request(request_lock_pre_acquire, 0); + ASSERT_EQ(0, when_pre_acquire_lock_handler(exclusive_lock)); + + MockPostAcquireRequest request_lock_post_acquire; + expect_post_acquire_request(exclusive_lock, request_lock_post_acquire, + -EPERM); + expect_is_state_acquiring(exclusive_lock, true); + ASSERT_EQ(-EPERM, when_post_acquire_lock_handler(exclusive_lock, 0)); +} + +TEST_F(TestMockExclusiveLock, PreReleaseLockError) { + REQUIRE_FEATURE(RBD_FEATURE_EXCLUSIVE_LOCK); + + librbd::ImageCtx *ictx; + ASSERT_EQ(0, open_image(m_image_name, &ictx)); + + MockExclusiveLockImageCtx mock_image_ctx(*ictx); + MockExclusiveLock exclusive_lock(mock_image_ctx); + expect_op_work_queue(mock_image_ctx); + + InSequence seq; + expect_set_state_initializing(exclusive_lock); + expect_block_writes(mock_image_ctx); + expect_set_state_unlocked(exclusive_lock); + ASSERT_EQ(0, when_init(mock_image_ctx, exclusive_lock)); + + // release lock + MockPreReleaseRequest pre_request_release; + expect_pre_release_request(pre_request_release, -EINVAL); + ASSERT_EQ(-EINVAL, when_pre_release_lock_handler(exclusive_lock, false)); + + expect_is_state_pre_releasing(exclusive_lock, true); + ASSERT_EQ(-EINVAL, when_post_release_lock_handler(exclusive_lock, false, + -EINVAL)); +} + +TEST_F(TestMockExclusiveLock, ReacquireLock) { + REQUIRE_FEATURE(RBD_FEATURE_EXCLUSIVE_LOCK); + + librbd::ImageCtx *ictx; + ASSERT_EQ(0, open_image(m_image_name, &ictx)); + + MockExclusiveLockImageCtx mock_image_ctx(*ictx); + MockExclusiveLock exclusive_lock(mock_image_ctx); + expect_op_work_queue(mock_image_ctx); + + InSequence seq; + expect_set_state_initializing(exclusive_lock); + expect_block_writes(mock_image_ctx); + expect_set_state_unlocked(exclusive_lock); + ASSERT_EQ(0, when_init(mock_image_ctx, exclusive_lock)); + + // (try) acquire lock + MockPreAcquireRequest try_lock_pre_acquire; + expect_pre_acquire_request(try_lock_pre_acquire, 0); + ASSERT_EQ(0, when_pre_acquire_lock_handler(exclusive_lock)); + + MockPostAcquireRequest try_lock_post_acquire; + expect_post_acquire_request(exclusive_lock, try_lock_post_acquire, 0); + expect_is_state_acquiring(exclusive_lock, true); + expect_notify_acquired_lock(mock_image_ctx); + expect_unblock_writes(mock_image_ctx); + ASSERT_EQ(0, when_post_acquire_lock_handler(exclusive_lock, 0)); + + // reacquire lock + expect_notify_acquired_lock(mock_image_ctx); + ASSERT_EQ(0, when_post_reacquire_lock_handler(exclusive_lock, 0)); + + // shut down (and release) + expect_shut_down(exclusive_lock); + expect_is_state_waiting_for_lock(exclusive_lock, false); + ASSERT_EQ(0, when_shut_down(mock_image_ctx, exclusive_lock)); + + MockPreReleaseRequest shutdown_pre_release; + expect_pre_release_request(shutdown_pre_release, 0); + ASSERT_EQ(0, when_pre_release_lock_handler(exclusive_lock, true)); + + expect_unblock_writes(mock_image_ctx); + expect_notify_released_lock(mock_image_ctx); + ASSERT_EQ(0, when_post_release_lock_handler(exclusive_lock, true, 0)); +} + +TEST_F(TestMockExclusiveLock, BlockRequests) { + REQUIRE_FEATURE(RBD_FEATURE_EXCLUSIVE_LOCK); + + librbd::ImageCtx *ictx; + ASSERT_EQ(0, open_image(m_image_name, &ictx)); + + MockExclusiveLockImageCtx mock_image_ctx(*ictx); + MockExclusiveLock exclusive_lock(mock_image_ctx); + exclusive_lock::MockPolicy mock_exclusive_lock_policy; + + expect_op_work_queue(mock_image_ctx); + + InSequence seq; + expect_set_state_initializing(exclusive_lock); + expect_block_writes(mock_image_ctx); + expect_set_state_unlocked(exclusive_lock); + ASSERT_EQ(0, when_init(mock_image_ctx, exclusive_lock)); + + int ret_val; + expect_is_state_shutdown(exclusive_lock, false); + expect_is_state_locked(exclusive_lock, true); + ASSERT_TRUE(exclusive_lock.accept_request( + exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, &ret_val)); + ASSERT_EQ(0, ret_val); + + exclusive_lock.block_requests(-EROFS); + expect_is_state_shutdown(exclusive_lock, false); + expect_is_state_locked(exclusive_lock, true); + expect_accept_blocked_request(mock_image_ctx, mock_exclusive_lock_policy, + exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, + false); + ASSERT_FALSE(exclusive_lock.accept_request( + exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, &ret_val)); + ASSERT_EQ(-EROFS, ret_val); + + expect_is_state_shutdown(exclusive_lock, false); + expect_is_state_locked(exclusive_lock, true); + expect_accept_blocked_request( + mock_image_ctx, mock_exclusive_lock_policy, + exclusive_lock::OPERATION_REQUEST_TYPE_TRASH_SNAP_REMOVE, true); + ASSERT_TRUE(exclusive_lock.accept_request( + exclusive_lock::OPERATION_REQUEST_TYPE_TRASH_SNAP_REMOVE, + &ret_val)); + ASSERT_EQ(0, ret_val); + + exclusive_lock.unblock_requests(); + expect_is_state_shutdown(exclusive_lock, false); + expect_is_state_locked(exclusive_lock, true); + ASSERT_TRUE(exclusive_lock.accept_request( + exclusive_lock::OPERATION_REQUEST_TYPE_GENERAL, &ret_val)); + ASSERT_EQ(0, ret_val); +} + +} // namespace librbd + |