--- /dev/null
+// -*- 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 "librbd/ManagedLock.h"
+#include "librbd/managed_lock/AcquireRequest.h"
+#include "librbd/managed_lock/BreakRequest.h"
+#include "librbd/managed_lock/GetLockerRequest.h"
+#include "librbd/managed_lock/ReacquireRequest.h"
+#include "librbd/managed_lock/ReleaseRequest.h"
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+#include <list>
+
+namespace librbd {
+
+struct MockManagedLockImageCtx : public MockImageCtx {
+ MockManagedLockImageCtx(ImageCtx &image_ctx) : MockImageCtx(image_ctx) {}
+};
+
+namespace watcher {
+template <>
+struct Traits<MockManagedLockImageCtx> {
+ typedef librbd::MockImageWatcher Watcher;
+};
+}
+
+namespace managed_lock {
+
+template<typename T>
+struct BaseRequest {
+ static std::list<T *> s_requests;
+ Context *on_finish = nullptr;
+
+ static T* create(librados::IoCtx& ioctx, MockImageWatcher *watcher,
+ ContextWQ *work_queue, const std::string& oid,
+ const std::string& cookie, Context *on_finish) {
+ assert(!s_requests.empty());
+ T* req = s_requests.front();
+ 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 AcquireRequest<MockManagedLockImageCtx> : public BaseRequest<AcquireRequest<MockManagedLockImageCtx> > {
+ static AcquireRequest* create(librados::IoCtx& ioctx,
+ MockImageWatcher *watcher,
+ ContextWQ *work_queue, const std::string& oid,
+ const std::string& cookie,
+ bool exclusive, bool blacklist_on_break_lock,
+ uint32_t blacklist_expire_seconds,
+ Context *on_finish) {
+ return BaseRequest::create(ioctx, watcher, work_queue, oid, cookie, on_finish);
+ }
+
+ MOCK_METHOD0(send, void());
+};
+
+template <>
+struct ReacquireRequest<MockManagedLockImageCtx> : public BaseRequest<ReacquireRequest<MockManagedLockImageCtx> > {
+ static ReacquireRequest* create(librados::IoCtx &ioctx, const std::string& oid,
+ const string& old_cookie, const std::string& new_cookie,
+ bool exclusive, Context *on_finish) {
+ return BaseRequest::create(ioctx, nullptr, nullptr, oid, new_cookie,
+ on_finish);
+ }
+
+ MOCK_METHOD0(send, void());
+};
+
+template <>
+struct ReleaseRequest<MockManagedLockImageCtx> : public BaseRequest<ReleaseRequest<MockManagedLockImageCtx> > {
+ static ReleaseRequest* create(librados::IoCtx& ioctx, MockImageWatcher *watcher,
+ ContextWQ *work_queue, const std::string& oid,
+ const std::string& cookie, Context *on_finish) {
+ return BaseRequest::create(ioctx, watcher, work_queue, oid, cookie,
+ on_finish);
+ }
+ MOCK_METHOD0(send, void());
+};
+
+template <>
+struct GetLockerRequest<MockManagedLockImageCtx> {
+ static GetLockerRequest* create(librados::IoCtx& ioctx,
+ const std::string& oid, bool exclusive,
+ Locker *locker, Context *on_finish) {
+ assert(0 == "unexpected call");
+ }
+
+ void send() {
+ assert(0 == "unexpected call");
+ }
+};
+
+template <>
+struct BreakRequest<MockManagedLockImageCtx> {
+ static BreakRequest* create(librados::IoCtx& ioctx, ContextWQ *work_queue,
+ const std::string& oid, const Locker &locker,
+ bool exclusive, bool blacklist_locker,
+ uint32_t blacklist_expire_seconds,
+ bool force_break_lock, Context *on_finish) {
+ assert(0 == "unexpected call");
+ }
+
+ void send() {
+ assert(0 == "unexpected call");
+ }
+};
+
+} // namespace managed_lock
+} // namespace librbd
+
+// template definitions
+#include "librbd/ManagedLock.cc"
+template class librbd::ManagedLock<librbd::MockManagedLockImageCtx>;
+
+
+ACTION_P3(QueueRequest, request, r, wq) {
+ if (request->on_finish != nullptr) {
+ if (wq != nullptr) {
+ wq->queue(request->on_finish, r);
+ } else {
+ request->on_finish->complete(r);
+ }
+ }
+}
+
+ACTION_P2(QueueContext, r, wq) {
+ wq->queue(arg0, r);
+}
+
+namespace librbd {
+
+using ::testing::_;
+using ::testing::DoAll;
+using ::testing::Invoke;
+using ::testing::InSequence;
+using ::testing::Return;
+
+class TestMockManagedLock : public TestMockFixture {
+public:
+ typedef ManagedLock<MockManagedLockImageCtx> MockManagedLock;
+ typedef managed_lock::AcquireRequest<MockManagedLockImageCtx> MockAcquireRequest;
+ typedef managed_lock::ReacquireRequest<MockManagedLockImageCtx> MockReacquireRequest;
+ typedef managed_lock::ReleaseRequest<MockManagedLockImageCtx> MockReleaseRequest;
+
+ void expect_get_watch_handle(MockImageWatcher &mock_watcher,
+ uint64_t watch_handle = 1234567890) {
+ EXPECT_CALL(mock_watcher, get_watch_handle())
+ .WillOnce(Return(watch_handle));
+ }
+
+ void expect_acquire_lock(MockImageWatcher &watcher,
+ ContextWQ *work_queue,
+ MockAcquireRequest &acquire_request, int r) {
+ expect_get_watch_handle(watcher);
+ EXPECT_CALL(acquire_request, send())
+ .WillOnce(QueueRequest(&acquire_request, r, work_queue));
+ }
+
+ void expect_release_lock(ContextWQ *work_queue,
+ MockReleaseRequest &release_request, int r) {
+ EXPECT_CALL(release_request, send())
+ .WillOnce(QueueRequest(&release_request, r, work_queue));
+ }
+
+ void expect_reacquire_lock(MockImageWatcher& watcher,
+ ContextWQ *work_queue,
+ MockReacquireRequest &mock_reacquire_request,
+ int r) {
+ expect_get_watch_handle(watcher, 98765);
+ EXPECT_CALL(mock_reacquire_request, send())
+ .WillOnce(QueueRequest(&mock_reacquire_request, r, work_queue));
+ }
+
+ void expect_flush_notifies(MockImageWatcher *mock_watcher) {
+ EXPECT_CALL(*mock_watcher, flush(_))
+ .WillOnce(CompleteContext(0, (ContextWQ *)nullptr));
+ }
+
+ int when_acquire_lock(MockManagedLock &managed_lock) {
+ C_SaferCond ctx;
+ {
+ managed_lock.acquire_lock(&ctx);
+ }
+ return ctx.wait();
+ }
+ int when_release_lock(MockManagedLock &managed_lock) {
+ C_SaferCond ctx;
+ {
+ managed_lock.release_lock(&ctx);
+ }
+ return ctx.wait();
+ }
+ int when_shut_down(MockManagedLock &managed_lock) {
+ C_SaferCond ctx;
+ {
+ managed_lock.shut_down(&ctx);
+ }
+ return ctx.wait();
+ }
+
+ bool is_lock_owner(MockManagedLock &managed_lock) {
+ return managed_lock.is_lock_owner();
+ }
+};
+
+TEST_F(TestMockManagedLock, StateTransitions) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockManagedLockImageCtx mock_image_ctx(*ictx);
+ MockManagedLock managed_lock(ictx->md_ctx, ictx->op_work_queue,
+ ictx->header_oid, mock_image_ctx.image_watcher,
+ librbd::managed_lock::EXCLUSIVE, true, 0);
+ InSequence seq;
+
+ MockAcquireRequest request_lock_acquire1;
+ expect_acquire_lock(*mock_image_ctx.image_watcher, ictx->op_work_queue, request_lock_acquire1, 0);
+ ASSERT_EQ(0, when_acquire_lock(managed_lock));
+ ASSERT_TRUE(is_lock_owner(managed_lock));
+
+ MockReleaseRequest request_release;
+ expect_release_lock(ictx->op_work_queue, request_release, 0);
+ ASSERT_EQ(0, when_release_lock(managed_lock));
+ ASSERT_FALSE(is_lock_owner(managed_lock));
+
+ MockAcquireRequest request_lock_acquire2;
+ expect_acquire_lock(*mock_image_ctx.image_watcher, ictx->op_work_queue, request_lock_acquire2, 0);
+ ASSERT_EQ(0, when_acquire_lock(managed_lock));
+ ASSERT_TRUE(is_lock_owner(managed_lock));
+
+ MockReleaseRequest shutdown_release;
+ expect_release_lock(ictx->op_work_queue, shutdown_release, 0);
+ ASSERT_EQ(0, when_shut_down(managed_lock));
+ ASSERT_FALSE(is_lock_owner(managed_lock));
+}
+
+TEST_F(TestMockManagedLock, AcquireLockLockedState) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockManagedLockImageCtx mock_image_ctx(*ictx);
+ MockManagedLock managed_lock(ictx->md_ctx, ictx->op_work_queue,
+ ictx->header_oid, mock_image_ctx.image_watcher,
+ librbd::managed_lock::EXCLUSIVE, true, 0);
+ InSequence seq;
+
+ MockAcquireRequest try_lock_acquire;
+ expect_acquire_lock(*mock_image_ctx.image_watcher, ictx->op_work_queue, try_lock_acquire, 0);
+ ASSERT_EQ(0, when_acquire_lock(managed_lock));
+ ASSERT_EQ(0, when_acquire_lock(managed_lock));
+
+ MockReleaseRequest shutdown_release;
+ expect_release_lock(ictx->op_work_queue, shutdown_release, 0);
+ ASSERT_EQ(0, when_shut_down(managed_lock));
+}
+
+TEST_F(TestMockManagedLock, AcquireLockAlreadyLocked) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockManagedLockImageCtx mock_image_ctx(*ictx);
+ MockManagedLock managed_lock(ictx->md_ctx, ictx->op_work_queue,
+ ictx->header_oid, mock_image_ctx.image_watcher,
+ librbd::managed_lock::EXCLUSIVE, true, 0);
+ InSequence seq;
+
+ MockAcquireRequest try_lock_acquire;
+ expect_acquire_lock(*mock_image_ctx.image_watcher, ictx->op_work_queue, try_lock_acquire, -EAGAIN);
+ ASSERT_EQ(-EAGAIN, when_acquire_lock(managed_lock));
+ ASSERT_FALSE(is_lock_owner(managed_lock));
+
+ ASSERT_EQ(0, when_shut_down(managed_lock));
+}
+
+TEST_F(TestMockManagedLock, AcquireLockBusy) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockManagedLockImageCtx mock_image_ctx(*ictx);
+ MockManagedLock managed_lock(ictx->md_ctx, ictx->op_work_queue,
+ ictx->header_oid, mock_image_ctx.image_watcher,
+ librbd::managed_lock::EXCLUSIVE, true, 0);
+ InSequence seq;
+
+ MockAcquireRequest try_lock_acquire;
+ expect_acquire_lock(*mock_image_ctx.image_watcher, ictx->op_work_queue, try_lock_acquire, -EBUSY);
+ ASSERT_EQ(-EBUSY, when_acquire_lock(managed_lock));
+ ASSERT_FALSE(is_lock_owner(managed_lock));
+
+ ASSERT_EQ(0, when_shut_down(managed_lock));
+}
+
+TEST_F(TestMockManagedLock, AcquireLockError) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockManagedLockImageCtx mock_image_ctx(*ictx);
+ MockManagedLock managed_lock(ictx->md_ctx, ictx->op_work_queue,
+ ictx->header_oid, mock_image_ctx.image_watcher,
+ librbd::managed_lock::EXCLUSIVE, true, 0);
+ InSequence seq;
+
+ MockAcquireRequest try_lock_acquire;
+ expect_acquire_lock(*mock_image_ctx.image_watcher, ictx->op_work_queue, try_lock_acquire, -EINVAL);
+
+ ASSERT_EQ(-EINVAL, when_acquire_lock(managed_lock));
+ ASSERT_FALSE(is_lock_owner(managed_lock));
+
+ ASSERT_EQ(0, when_shut_down(managed_lock));
+}
+
+TEST_F(TestMockManagedLock, AcquireLockBlacklist) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockManagedLockImageCtx mock_image_ctx(*ictx);
+ MockManagedLock managed_lock(ictx->md_ctx, ictx->op_work_queue,
+ ictx->header_oid, mock_image_ctx.image_watcher,
+ librbd::managed_lock::EXCLUSIVE, true, 0);
+ InSequence seq;
+
+ // will abort after seeing blacklist error (avoid infinite request loop)
+ MockAcquireRequest request_lock_acquire;
+ expect_acquire_lock(*mock_image_ctx.image_watcher, ictx->op_work_queue, request_lock_acquire, -EBLACKLISTED);
+ ASSERT_EQ(-EBLACKLISTED, when_acquire_lock(managed_lock));
+ ASSERT_FALSE(is_lock_owner(managed_lock));
+
+ ASSERT_EQ(0, when_shut_down(managed_lock));
+}
+
+TEST_F(TestMockManagedLock, ReleaseLockUnlockedState) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockManagedLockImageCtx mock_image_ctx(*ictx);
+ MockManagedLock managed_lock(ictx->md_ctx, ictx->op_work_queue,
+ ictx->header_oid, mock_image_ctx.image_watcher,
+ librbd::managed_lock::EXCLUSIVE, true, 0);
+ InSequence seq;
+
+ ASSERT_EQ(0, when_release_lock(managed_lock));
+
+ ASSERT_EQ(0, when_shut_down(managed_lock));
+}
+
+TEST_F(TestMockManagedLock, ReleaseLockError) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockManagedLockImageCtx mock_image_ctx(*ictx);
+ MockManagedLock managed_lock(ictx->md_ctx, ictx->op_work_queue,
+ ictx->header_oid, mock_image_ctx.image_watcher,
+ librbd::managed_lock::EXCLUSIVE, true, 0);
+ InSequence seq;
+
+ MockAcquireRequest try_lock_acquire;
+ expect_acquire_lock(*mock_image_ctx.image_watcher, ictx->op_work_queue, try_lock_acquire, 0);
+ ASSERT_EQ(0, when_acquire_lock(managed_lock));
+
+ MockReleaseRequest release;
+ expect_release_lock(ictx->op_work_queue, release, -EINVAL);
+
+ ASSERT_EQ(-EINVAL, when_release_lock(managed_lock));
+ ASSERT_TRUE(is_lock_owner(managed_lock));
+
+ MockReleaseRequest shutdown_release;
+ expect_release_lock(ictx->op_work_queue, shutdown_release, 0);
+ ASSERT_EQ(0, when_shut_down(managed_lock));
+ ASSERT_FALSE(is_lock_owner(managed_lock));
+}
+
+TEST_F(TestMockManagedLock, ConcurrentRequests) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockManagedLockImageCtx mock_image_ctx(*ictx);
+ MockManagedLock managed_lock(ictx->md_ctx, ictx->op_work_queue,
+ ictx->header_oid, mock_image_ctx.image_watcher,
+ librbd::managed_lock::EXCLUSIVE, true, 0);
+ InSequence seq;
+
+ expect_get_watch_handle(*mock_image_ctx.image_watcher);
+
+ C_SaferCond wait_for_send_ctx1;
+ MockAcquireRequest acquire_error;
+ EXPECT_CALL(acquire_error, send())
+ .WillOnce(Notify(&wait_for_send_ctx1));
+
+ MockAcquireRequest request_acquire;
+ expect_acquire_lock(*mock_image_ctx.image_watcher, ictx->op_work_queue, request_acquire, 0);
+
+ MockReleaseRequest release;
+ C_SaferCond wait_for_send_ctx2;
+ EXPECT_CALL(release, send())
+ .WillOnce(Notify(&wait_for_send_ctx2));
+
+ C_SaferCond acquire_request_ctx1;
+ managed_lock.acquire_lock(&acquire_request_ctx1);
+
+ C_SaferCond acquire_lock_ctx1;
+ C_SaferCond acquire_lock_ctx2;
+ managed_lock.acquire_lock(&acquire_lock_ctx1);
+ managed_lock.acquire_lock(&acquire_lock_ctx2);
+
+ // fail the try_lock
+ ASSERT_EQ(0, wait_for_send_ctx1.wait());
+ acquire_error.on_finish->complete(-EINVAL);
+ ASSERT_EQ(-EINVAL, acquire_request_ctx1.wait());
+
+ C_SaferCond acquire_lock_ctx3;
+ managed_lock.acquire_lock(&acquire_lock_ctx3);
+
+ C_SaferCond release_lock_ctx1;
+ managed_lock.release_lock(&release_lock_ctx1);
+
+ // all three pending request locks should complete
+ ASSERT_EQ(-EINVAL, acquire_lock_ctx1.wait());
+ ASSERT_EQ(-EINVAL, acquire_lock_ctx2.wait());
+ ASSERT_EQ(0, acquire_lock_ctx3.wait());
+
+ // proceed with the release
+ ASSERT_EQ(0, wait_for_send_ctx2.wait());
+ release.on_finish->complete(0);
+ ASSERT_EQ(0, release_lock_ctx1.wait());
+
+ ASSERT_EQ(0, when_shut_down(managed_lock));
+}
+
+TEST_F(TestMockManagedLock, ReacquireLock) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockManagedLockImageCtx mock_image_ctx(*ictx);
+ MockManagedLock managed_lock(ictx->md_ctx, ictx->op_work_queue,
+ ictx->header_oid, mock_image_ctx.image_watcher,
+ librbd::managed_lock::EXCLUSIVE, true, 0);
+ InSequence seq;
+
+ MockAcquireRequest request_lock_acquire;
+ expect_acquire_lock(*mock_image_ctx.image_watcher, ictx->op_work_queue, request_lock_acquire, 0);
+ ASSERT_EQ(0, when_acquire_lock(managed_lock));
+ ASSERT_TRUE(is_lock_owner(managed_lock));
+
+ MockReacquireRequest mock_reacquire_request;
+ C_SaferCond reacquire_ctx;
+ expect_reacquire_lock(*mock_image_ctx.image_watcher, ictx->op_work_queue, mock_reacquire_request, 0);
+ managed_lock.reacquire_lock(&reacquire_ctx);
+ ASSERT_EQ(0, reacquire_ctx.wait());
+
+ MockReleaseRequest shutdown_release;
+ expect_release_lock(ictx->op_work_queue, shutdown_release, 0);
+ ASSERT_EQ(0, when_shut_down(managed_lock));
+ ASSERT_FALSE(is_lock_owner(managed_lock));
+}
+
+TEST_F(TestMockManagedLock, ReacquireLockError) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockManagedLockImageCtx mock_image_ctx(*ictx);
+ MockManagedLock managed_lock(ictx->md_ctx, ictx->op_work_queue,
+ ictx->header_oid, mock_image_ctx.image_watcher,
+ librbd::managed_lock::EXCLUSIVE, true, 0);
+ InSequence seq;
+
+ MockAcquireRequest request_lock_acquire;
+ expect_acquire_lock(*mock_image_ctx.image_watcher, ictx->op_work_queue, request_lock_acquire, 0);
+ ASSERT_EQ(0, when_acquire_lock(managed_lock));
+ ASSERT_TRUE(is_lock_owner(managed_lock));
+
+ MockReacquireRequest mock_reacquire_request;
+ C_SaferCond reacquire_ctx;
+ expect_reacquire_lock(*mock_image_ctx.image_watcher, ictx->op_work_queue, mock_reacquire_request, -EOPNOTSUPP);
+
+ MockReleaseRequest reacquire_lock_release;
+ expect_release_lock(ictx->op_work_queue, reacquire_lock_release, 0);
+
+ MockAcquireRequest reacquire_lock_acquire;
+ expect_acquire_lock(*mock_image_ctx.image_watcher, ictx->op_work_queue, reacquire_lock_acquire, 0);
+
+ managed_lock.reacquire_lock(&reacquire_ctx);
+ ASSERT_EQ(-EOPNOTSUPP, reacquire_ctx.wait());
+
+ MockReleaseRequest shutdown_release;
+ expect_release_lock(ictx->op_work_queue, shutdown_release, 0);
+ ASSERT_EQ(0, when_shut_down(managed_lock));
+ ASSERT_FALSE(is_lock_owner(managed_lock));
+}
+
+} // namespace librbd
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