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-rw-r--r--src/test/librbd/test_mock_Watcher.cc405
1 files changed, 405 insertions, 0 deletions
diff --git a/src/test/librbd/test_mock_Watcher.cc b/src/test/librbd/test_mock_Watcher.cc
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index 000000000..54b395b1f
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+++ b/src/test/librbd/test_mock_Watcher.cc
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+// -*- 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/librados_test_stub/MockTestMemIoCtxImpl.h"
+#include "test/librados_test_stub/MockTestMemRadosClient.h"
+#include "common/Cond.h"
+#include "common/ceph_mutex.h"
+#include "librados/AioCompletionImpl.h"
+#include "librbd/Watcher.h"
+#include "librbd/watcher/RewatchRequest.h"
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+#include <list>
+
+namespace librbd {
+
+namespace {
+
+struct MockWatcher : public Watcher {
+ std::string oid;
+
+ MockWatcher(librados::IoCtx& ioctx, asio::ContextWQ *work_queue,
+ const std::string& oid)
+ : Watcher(ioctx, work_queue, oid) {
+ }
+
+ virtual void handle_notify(uint64_t notify_id, uint64_t handle,
+ uint64_t notifier_id, bufferlist &bl) {
+ }
+};
+
+} // anonymous namespace
+} // namespace librbd
+
+namespace librbd {
+
+using ::testing::_;
+using ::testing::DoAll;
+using ::testing::DoDefault;
+using ::testing::Invoke;
+using ::testing::InSequence;
+using ::testing::Return;
+using ::testing::SaveArg;
+using ::testing::WithArg;
+using ::testing::WithArgs;
+
+class TestMockWatcher : public TestMockFixture {
+public:
+ TestMockWatcher() = default;
+
+ virtual void SetUp() {
+ TestMockFixture::SetUp();
+
+ m_oid = get_temp_image_name();
+
+ bufferlist bl;
+ ASSERT_EQ(0, m_ioctx.write_full(m_oid, bl));
+ }
+
+ void expect_aio_watch(MockImageCtx &mock_image_ctx, int r,
+ const std::function<void()> &action = std::function<void()>()) {
+ librados::MockTestMemIoCtxImpl &mock_io_ctx(get_mock_io_ctx(m_ioctx));
+ librados::MockTestMemRadosClient *mock_rados_client(
+ mock_io_ctx.get_mock_rados_client());
+
+ EXPECT_CALL(mock_io_ctx, aio_watch(m_oid, _, _, _))
+ .WillOnce(DoAll(WithArgs<1, 2, 3>(Invoke([this, &mock_image_ctx, mock_rados_client, r, action](
+ librados::AioCompletionImpl *c, uint64_t *cookie,
+ librados::WatchCtx2 *watch_ctx) {
+ if (r == 0) {
+ *cookie = 234U;
+ m_watch_ctx = watch_ctx;
+ }
+
+ c->get();
+ mock_image_ctx.image_ctx->op_work_queue->queue(new LambdaContext([mock_rados_client, action, c](int r) {
+ if (action) {
+ action();
+ }
+
+ mock_rados_client->finish_aio_completion(c, r);
+ }), r);
+ notify_watch();
+ })), Return(0)));
+ }
+
+ void expect_aio_unwatch(MockImageCtx &mock_image_ctx, int r,
+ const std::function<void()> &action = std::function<void()>()) {
+ librados::MockTestMemIoCtxImpl &mock_io_ctx(get_mock_io_ctx(m_ioctx));
+ librados::MockTestMemRadosClient *mock_rados_client(
+ mock_io_ctx.get_mock_rados_client());
+
+ EXPECT_CALL(mock_io_ctx, aio_unwatch(_, _))
+ .WillOnce(DoAll(Invoke([this, &mock_image_ctx, mock_rados_client, r, action](
+ uint64_t handle, librados::AioCompletionImpl *c) {
+ c->get();
+ mock_image_ctx.image_ctx->op_work_queue->queue(new LambdaContext([mock_rados_client, action, c](int r) {
+ if (action) {
+ action();
+ }
+
+ mock_rados_client->finish_aio_completion(c, r);
+ }), r);
+ notify_watch();
+ }), Return(0)));
+ }
+
+ std::string m_oid;
+ librados::WatchCtx2 *m_watch_ctx = nullptr;
+
+ void notify_watch() {
+ std::lock_guard locker{m_lock};
+ ++m_watch_count;
+ m_cond.notify_all();
+ }
+
+ bool wait_for_watch(MockImageCtx &mock_image_ctx, size_t count) {
+ using namespace std::chrono_literals;
+ std::unique_lock locker{m_lock};
+ while (m_watch_count < count) {
+ if (m_cond.wait_for(locker, 10s) == std::cv_status::timeout) {
+ return false;
+ }
+ }
+ m_watch_count -= count;
+ return true;
+ }
+
+ ceph::mutex m_lock = ceph::make_mutex("TestMockWatcher::m_lock");
+ ceph::condition_variable m_cond;
+ size_t m_watch_count = 0;
+};
+
+TEST_F(TestMockWatcher, Success) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockImageCtx mock_image_ctx(*ictx);
+ MockWatcher mock_image_watcher(m_ioctx, ictx->op_work_queue, m_oid);
+
+ InSequence seq;
+ expect_aio_watch(mock_image_ctx, 0);
+ expect_aio_unwatch(mock_image_ctx, 0);
+
+ C_SaferCond register_ctx;
+ mock_image_watcher.register_watch(&register_ctx);
+ ASSERT_EQ(0, register_ctx.wait());
+
+ C_SaferCond unregister_ctx;
+ mock_image_watcher.unregister_watch(&unregister_ctx);
+ ASSERT_EQ(0, unregister_ctx.wait());
+}
+
+TEST_F(TestMockWatcher, RegisterError) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockImageCtx mock_image_ctx(*ictx);
+ MockWatcher mock_image_watcher(m_ioctx, ictx->op_work_queue, m_oid);
+
+ InSequence seq;
+ expect_aio_watch(mock_image_ctx, -EINVAL);
+
+ C_SaferCond register_ctx;
+ mock_image_watcher.register_watch(&register_ctx);
+ ASSERT_EQ(-EINVAL, register_ctx.wait());
+}
+
+TEST_F(TestMockWatcher, UnregisterError) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockImageCtx mock_image_ctx(*ictx);
+ MockWatcher mock_image_watcher(m_ioctx, ictx->op_work_queue, m_oid);
+
+ InSequence seq;
+ expect_aio_watch(mock_image_ctx, 0);
+ expect_aio_unwatch(mock_image_ctx, -EINVAL);
+
+ C_SaferCond register_ctx;
+ mock_image_watcher.register_watch(&register_ctx);
+ ASSERT_EQ(0, register_ctx.wait());
+
+ C_SaferCond unregister_ctx;
+ mock_image_watcher.unregister_watch(&unregister_ctx);
+ ASSERT_EQ(-EINVAL, unregister_ctx.wait());
+}
+
+TEST_F(TestMockWatcher, Reregister) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockImageCtx mock_image_ctx(*ictx);
+ MockWatcher mock_image_watcher(m_ioctx, ictx->op_work_queue, m_oid);
+
+ expect_op_work_queue(mock_image_ctx);
+
+ InSequence seq;
+ expect_aio_watch(mock_image_ctx, 0);
+ expect_aio_unwatch(mock_image_ctx, 0);
+ expect_aio_watch(mock_image_ctx, 0);
+ expect_aio_unwatch(mock_image_ctx, 0);
+
+ C_SaferCond register_ctx;
+ mock_image_watcher.register_watch(&register_ctx);
+ ASSERT_EQ(0, register_ctx.wait());
+
+ ceph_assert(m_watch_ctx != nullptr);
+ m_watch_ctx->handle_error(0, -ESHUTDOWN);
+
+ // wait for recovery unwatch/watch
+ ASSERT_TRUE(wait_for_watch(mock_image_ctx, 3));
+
+ C_SaferCond unregister_ctx;
+ mock_image_watcher.unregister_watch(&unregister_ctx);
+ ASSERT_EQ(0, unregister_ctx.wait());
+}
+
+TEST_F(TestMockWatcher, ReregisterUnwatchError) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockImageCtx mock_image_ctx(*ictx);
+ MockWatcher mock_image_watcher(m_ioctx, ictx->op_work_queue, m_oid);
+
+ expect_op_work_queue(mock_image_ctx);
+
+ InSequence seq;
+ expect_aio_watch(mock_image_ctx, 0);
+ expect_aio_unwatch(mock_image_ctx, -EINVAL);
+ expect_aio_watch(mock_image_ctx, 0);
+ expect_aio_unwatch(mock_image_ctx, 0);
+
+ C_SaferCond register_ctx;
+ mock_image_watcher.register_watch(&register_ctx);
+ ASSERT_EQ(0, register_ctx.wait());
+
+ ceph_assert(m_watch_ctx != nullptr);
+ m_watch_ctx->handle_error(0, -ESHUTDOWN);
+
+ // wait for recovery unwatch/watch
+ ASSERT_TRUE(wait_for_watch(mock_image_ctx, 3));
+
+ C_SaferCond unregister_ctx;
+ mock_image_watcher.unregister_watch(&unregister_ctx);
+ ASSERT_EQ(0, unregister_ctx.wait());
+}
+
+TEST_F(TestMockWatcher, ReregisterWatchError) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockImageCtx mock_image_ctx(*ictx);
+ MockWatcher mock_image_watcher(m_ioctx, ictx->op_work_queue, m_oid);
+
+ expect_op_work_queue(mock_image_ctx);
+
+ InSequence seq;
+ expect_aio_watch(mock_image_ctx, 0);
+ expect_aio_unwatch(mock_image_ctx, 0);
+ expect_aio_watch(mock_image_ctx, -EPERM);
+ expect_aio_watch(mock_image_ctx, 0);
+ expect_aio_unwatch(mock_image_ctx, 0);
+
+ C_SaferCond register_ctx;
+ mock_image_watcher.register_watch(&register_ctx);
+ ASSERT_EQ(0, register_ctx.wait());
+
+ ceph_assert(m_watch_ctx != nullptr);
+ m_watch_ctx->handle_error(0, -ESHUTDOWN);
+
+ // wait for recovery unwatch/watch
+ ASSERT_TRUE(wait_for_watch(mock_image_ctx, 4));
+
+ C_SaferCond unregister_ctx;
+ mock_image_watcher.unregister_watch(&unregister_ctx);
+ ASSERT_EQ(0, unregister_ctx.wait());
+}
+
+TEST_F(TestMockWatcher, ReregisterWatchBlocklist) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockImageCtx mock_image_ctx(*ictx);
+ MockWatcher mock_image_watcher(m_ioctx, ictx->op_work_queue, m_oid);
+
+ expect_op_work_queue(mock_image_ctx);
+
+ InSequence seq;
+ expect_aio_watch(mock_image_ctx, 0);
+ expect_aio_unwatch(mock_image_ctx, 0);
+ expect_aio_watch(mock_image_ctx, -EBLOCKLISTED);
+
+ C_SaferCond register_ctx;
+ mock_image_watcher.register_watch(&register_ctx);
+ ASSERT_TRUE(wait_for_watch(mock_image_ctx, 1));
+ ASSERT_EQ(0, register_ctx.wait());
+
+ ceph_assert(m_watch_ctx != nullptr);
+ m_watch_ctx->handle_error(0, -EBLOCKLISTED);
+
+ // wait for recovery unwatch/watch
+ ASSERT_TRUE(wait_for_watch(mock_image_ctx, 2));
+ ASSERT_TRUE(mock_image_watcher.is_blocklisted());
+
+ C_SaferCond unregister_ctx;
+ mock_image_watcher.unregister_watch(&unregister_ctx);
+ ASSERT_EQ(0, unregister_ctx.wait());
+}
+
+TEST_F(TestMockWatcher, ReregisterUnwatchPendingUnregister) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockImageCtx mock_image_ctx(*ictx);
+ MockWatcher mock_image_watcher(m_ioctx, ictx->op_work_queue, m_oid);
+
+ expect_op_work_queue(mock_image_ctx);
+
+ InSequence seq;
+ expect_aio_watch(mock_image_ctx, 0);
+
+ // inject an unregister
+ C_SaferCond unregister_ctx;
+ expect_aio_unwatch(mock_image_ctx, -EBLOCKLISTED,
+ [&mock_image_watcher, &unregister_ctx]() {
+ mock_image_watcher.unregister_watch(&unregister_ctx);
+ });
+
+ C_SaferCond register_ctx;
+ mock_image_watcher.register_watch(&register_ctx);
+ ASSERT_EQ(0, register_ctx.wait());
+
+ ceph_assert(m_watch_ctx != nullptr);
+ m_watch_ctx->handle_error(0, -EBLOCKLISTED);
+
+ ASSERT_EQ(0, unregister_ctx.wait());
+}
+
+TEST_F(TestMockWatcher, ReregisterWatchPendingUnregister) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockImageCtx mock_image_ctx(*ictx);
+ MockWatcher mock_image_watcher(m_ioctx, ictx->op_work_queue, m_oid);
+
+ expect_op_work_queue(mock_image_ctx);
+
+ InSequence seq;
+ expect_aio_watch(mock_image_ctx, 0);
+ expect_aio_unwatch(mock_image_ctx, 0);
+
+ // inject an unregister
+ C_SaferCond unregister_ctx;
+ expect_aio_watch(mock_image_ctx, -ESHUTDOWN,
+ [&mock_image_watcher, &unregister_ctx]() {
+ mock_image_watcher.unregister_watch(&unregister_ctx);
+ });
+
+ C_SaferCond register_ctx;
+ mock_image_watcher.register_watch(&register_ctx);
+ ASSERT_EQ(0, register_ctx.wait());
+
+ ceph_assert(m_watch_ctx != nullptr);
+ m_watch_ctx->handle_error(0, -ESHUTDOWN);
+
+ ASSERT_EQ(0, unregister_ctx.wait());
+}
+
+TEST_F(TestMockWatcher, ReregisterPendingUnregister) {
+ librbd::ImageCtx *ictx;
+ ASSERT_EQ(0, open_image(m_image_name, &ictx));
+
+ MockImageCtx mock_image_ctx(*ictx);
+ MockWatcher mock_image_watcher(m_ioctx, ictx->op_work_queue, m_oid);
+
+ expect_op_work_queue(mock_image_ctx);
+
+ InSequence seq;
+ expect_aio_watch(mock_image_ctx, 0);
+ expect_aio_unwatch(mock_image_ctx, 0);
+
+ // inject an unregister
+ C_SaferCond unregister_ctx;
+ expect_aio_watch(mock_image_ctx, 0,
+ [&mock_image_watcher, &unregister_ctx]() {
+ mock_image_watcher.unregister_watch(&unregister_ctx);
+ });
+
+ expect_aio_unwatch(mock_image_ctx, 0);
+
+ C_SaferCond register_ctx;
+ mock_image_watcher.register_watch(&register_ctx);
+ ASSERT_EQ(0, register_ctx.wait());
+
+ ceph_assert(m_watch_ctx != nullptr);
+ m_watch_ctx->handle_error(0, -ESHUTDOWN);
+
+ ASSERT_EQ(0, unregister_ctx.wait());
+}
+
+} // namespace librbd
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