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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/services/storage/indexed_db/scopes/leveldb_scopes.h"
#include <limits>
#include <utility>
#include "base/run_loop.h"
#include "base/task/sequenced_task_runner.h"
#include "base/test/bind.h"
#include "components/services/storage/indexed_db/locks/partitioned_lock_manager.h"
#include "components/services/storage/indexed_db/scopes/leveldb_scopes_test_utils.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/leveldatabase/src/include/leveldb/slice.h"
namespace content::indexed_db {
namespace {
class LevelDBScopesStartupTest : public LevelDBScopesTestBase {
public:
LevelDBScopesStartupTest() = default;
~LevelDBScopesStartupTest() override = default;
};
TEST_F(LevelDBScopesStartupTest, CleanupOnRecovery) {
const int64_t kScopeToCleanUp = 19;
SetUpRealDatabase();
PartitionedLockManager lock_manager;
WriteScopesMetadata(kScopeToCleanUp, true);
leveldb::Status failure_callback = leveldb::Status::OK();
LevelDBScopes scopes(
metadata_prefix_, kWriteBatchSizeForTesting, leveldb_, &lock_manager,
base::BindLambdaForTesting(
[&failure_callback](leveldb::Status s) { failure_callback = s; }));
leveldb::Status s = scopes.Initialize();
EXPECT_TRUE(s.ok());
scopes.StartRecoveryAndCleanupTasks();
// Wait until cleanup task runs.
task_env_.RunUntilIdle();
EXPECT_TRUE(IsScopeCleanedUp(kScopeToCleanUp));
EXPECT_FALSE(ScopeDataExistsOnDisk());
EXPECT_TRUE(failure_callback.ok());
}
TEST_F(LevelDBScopesStartupTest, RevertWithLocksOnRecoveryWithNoCleanup) {
const int64_t kScopeToResumeRevert = 19;
const std::string kUndoPutKey = "b10";
const std::string kUndoPutValue = "abc";
const std::string kCleanupDeleteRangeBegin = "b1";
const std::string kKeyWithinCleanupDeleteRange = "b2";
const std::string kCleanupDeleteRangeEnd = "b3";
SetUpRealDatabase();
PartitionedLockManager lock_manager;
// Tests that the revert execution on startup is performed correctly. This
// includes:
// * The revert task is executed & a value is written to disk,
// * The cleanup task is executed & deletes the scope metadata, but does not
// execute the cleanup tasks.
metadata_buffer_.mutable_locks()->Add();
metadata_buffer_.mutable_locks()->Mutable(0)->set_partition(0);
metadata_buffer_.mutable_locks()->Mutable(0)->mutable_key()->set_key(
simple_lock_begin_);
WriteScopesMetadata(kScopeToResumeRevert, false);
// Cleanup task that will be ignored.
cleanup_task_buffer_.mutable_delete_range_and_compact()->set_begin(
kCleanupDeleteRangeBegin);
cleanup_task_buffer_.mutable_delete_range_and_compact()->set_end(
kCleanupDeleteRangeEnd);
WriteCleanupTask(kScopeToResumeRevert, /*sequence_number=*/0);
// Undo task that will be executed.
int64_t undo_sequence_number = std::numeric_limits<int64_t>::max();
undo_task_buffer_.mutable_put()->set_key(kUndoPutKey);
undo_task_buffer_.mutable_put()->set_value(kUndoPutValue);
WriteUndoTask(kScopeToResumeRevert, undo_sequence_number);
// Entry which would be deleted by the cleanup task if it were run.
WriteLargeValue(kKeyWithinCleanupDeleteRange);
leveldb::Status failure_callback = leveldb::Status::OK();
LevelDBScopes scopes(
metadata_prefix_, kWriteBatchSizeForTesting, leveldb_, &lock_manager,
base::BindLambdaForTesting(
[&failure_callback](leveldb::Status s) { failure_callback = s; }));
leveldb::Status s = scopes.Initialize();
EXPECT_TRUE(s.ok());
// Verify that the lock was grabbed.
bool lock_grabbed = false;
PartitionedLockHolder locks_receiver;
lock_manager.AcquireLocks(
{CreateSimpleExclusiveLock()}, locks_receiver,
base::BindLambdaForTesting([&]() { lock_grabbed = true; }));
scopes.StartRecoveryAndCleanupTasks();
EXPECT_FALSE(lock_grabbed);
// Wait until revert runs.
base::RunLoop().RunUntilIdle();
value_buffer_.clear();
EXPECT_TRUE(leveldb_->db()
->Get(leveldb::ReadOptions(), kUndoPutKey, &value_buffer_)
.ok());
EXPECT_EQ(kUndoPutValue, value_buffer_);
// Ensure the cleanup task was posted & locks were released.
{
base::RunLoop loop;
base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE, loop.QuitClosure());
loop.Run();
}
EXPECT_TRUE(lock_grabbed);
// Wait until cleanup runs.
task_env_.RunUntilIdle();
EXPECT_TRUE(IsScopeCleanedUp(kScopeToResumeRevert));
EXPECT_FALSE(ScopeDataExistsOnDisk());
value_buffer_.clear();
EXPECT_TRUE(leveldb_->db()
->Get(leveldb::ReadOptions(), kKeyWithinCleanupDeleteRange,
&value_buffer_)
.ok());
EXPECT_TRUE(failure_callback.ok());
}
} // namespace
} // namespace content::indexed_db
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