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// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
// Copyright (c) 2015, Red Hat, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
#ifndef ROCKSDB_LITE
#include "rocksdb/utilities/env_mirror.h"
#include "env/mock_env.h"
#include "test_util/testharness.h"
namespace ROCKSDB_NAMESPACE {
class EnvMirrorTest : public testing::Test {
public:
Env* default_;
MockEnv* a_, *b_;
EnvMirror* env_;
const EnvOptions soptions_;
EnvMirrorTest()
: default_(Env::Default()),
a_(new MockEnv(default_)),
b_(new MockEnv(default_)),
env_(new EnvMirror(a_, b_)) {}
~EnvMirrorTest() {
delete env_;
delete a_;
delete b_;
}
};
TEST_F(EnvMirrorTest, Basics) {
uint64_t file_size;
std::unique_ptr<WritableFile> writable_file;
std::vector<std::string> children;
ASSERT_OK(env_->CreateDir("/dir"));
// Check that the directory is empty.
ASSERT_EQ(Status::NotFound(), env_->FileExists("/dir/non_existent"));
ASSERT_TRUE(!env_->GetFileSize("/dir/non_existent", &file_size).ok());
ASSERT_OK(env_->GetChildren("/dir", &children));
ASSERT_EQ(0U, children.size());
// Create a file.
ASSERT_OK(env_->NewWritableFile("/dir/f", &writable_file, soptions_));
writable_file.reset();
// Check that the file exists.
ASSERT_OK(env_->FileExists("/dir/f"));
ASSERT_OK(a_->FileExists("/dir/f"));
ASSERT_OK(b_->FileExists("/dir/f"));
ASSERT_OK(env_->GetFileSize("/dir/f", &file_size));
ASSERT_EQ(0U, file_size);
ASSERT_OK(env_->GetChildren("/dir", &children));
ASSERT_EQ(1U, children.size());
ASSERT_EQ("f", children[0]);
ASSERT_OK(a_->GetChildren("/dir", &children));
ASSERT_EQ(1U, children.size());
ASSERT_EQ("f", children[0]);
ASSERT_OK(b_->GetChildren("/dir", &children));
ASSERT_EQ(1U, children.size());
ASSERT_EQ("f", children[0]);
// Write to the file.
ASSERT_OK(env_->NewWritableFile("/dir/f", &writable_file, soptions_));
ASSERT_OK(writable_file->Append("abc"));
writable_file.reset();
// Check for expected size.
ASSERT_OK(env_->GetFileSize("/dir/f", &file_size));
ASSERT_EQ(3U, file_size);
ASSERT_OK(a_->GetFileSize("/dir/f", &file_size));
ASSERT_EQ(3U, file_size);
ASSERT_OK(b_->GetFileSize("/dir/f", &file_size));
ASSERT_EQ(3U, file_size);
// Check that renaming works.
ASSERT_TRUE(!env_->RenameFile("/dir/non_existent", "/dir/g").ok());
ASSERT_OK(env_->RenameFile("/dir/f", "/dir/g"));
ASSERT_EQ(Status::NotFound(), env_->FileExists("/dir/f"));
ASSERT_OK(env_->FileExists("/dir/g"));
ASSERT_OK(env_->GetFileSize("/dir/g", &file_size));
ASSERT_EQ(3U, file_size);
ASSERT_OK(a_->FileExists("/dir/g"));
ASSERT_OK(a_->GetFileSize("/dir/g", &file_size));
ASSERT_EQ(3U, file_size);
ASSERT_OK(b_->FileExists("/dir/g"));
ASSERT_OK(b_->GetFileSize("/dir/g", &file_size));
ASSERT_EQ(3U, file_size);
// Check that opening non-existent file fails.
std::unique_ptr<SequentialFile> seq_file;
std::unique_ptr<RandomAccessFile> rand_file;
ASSERT_TRUE(
!env_->NewSequentialFile("/dir/non_existent", &seq_file, soptions_).ok());
ASSERT_TRUE(!seq_file);
ASSERT_TRUE(!env_->NewRandomAccessFile("/dir/non_existent", &rand_file,
soptions_).ok());
ASSERT_TRUE(!rand_file);
// Check that deleting works.
ASSERT_TRUE(!env_->DeleteFile("/dir/non_existent").ok());
ASSERT_OK(env_->DeleteFile("/dir/g"));
ASSERT_EQ(Status::NotFound(), env_->FileExists("/dir/g"));
ASSERT_OK(env_->GetChildren("/dir", &children));
ASSERT_EQ(0U, children.size());
ASSERT_OK(env_->DeleteDir("/dir"));
}
TEST_F(EnvMirrorTest, ReadWrite) {
std::unique_ptr<WritableFile> writable_file;
std::unique_ptr<SequentialFile> seq_file;
std::unique_ptr<RandomAccessFile> rand_file;
Slice result;
char scratch[100];
ASSERT_OK(env_->CreateDir("/dir"));
ASSERT_OK(env_->NewWritableFile("/dir/f", &writable_file, soptions_));
ASSERT_OK(writable_file->Append("hello "));
ASSERT_OK(writable_file->Append("world"));
writable_file.reset();
// Read sequentially.
ASSERT_OK(env_->NewSequentialFile("/dir/f", &seq_file, soptions_));
ASSERT_OK(seq_file->Read(5, &result, scratch)); // Read "hello".
ASSERT_EQ(0, result.compare("hello"));
ASSERT_OK(seq_file->Skip(1));
ASSERT_OK(seq_file->Read(1000, &result, scratch)); // Read "world".
ASSERT_EQ(0, result.compare("world"));
ASSERT_OK(seq_file->Read(1000, &result, scratch)); // Try reading past EOF.
ASSERT_EQ(0U, result.size());
ASSERT_OK(seq_file->Skip(100)); // Try to skip past end of file.
ASSERT_OK(seq_file->Read(1000, &result, scratch));
ASSERT_EQ(0U, result.size());
// Random reads.
ASSERT_OK(env_->NewRandomAccessFile("/dir/f", &rand_file, soptions_));
ASSERT_OK(rand_file->Read(6, 5, &result, scratch)); // Read "world".
ASSERT_EQ(0, result.compare("world"));
ASSERT_OK(rand_file->Read(0, 5, &result, scratch)); // Read "hello".
ASSERT_EQ(0, result.compare("hello"));
ASSERT_OK(rand_file->Read(10, 100, &result, scratch)); // Read "d".
ASSERT_EQ(0, result.compare("d"));
// Too high offset.
ASSERT_TRUE(!rand_file->Read(1000, 5, &result, scratch).ok());
}
TEST_F(EnvMirrorTest, Locks) {
FileLock* lock;
// These are no-ops, but we test they return success.
ASSERT_OK(env_->LockFile("some file", &lock));
ASSERT_OK(env_->UnlockFile(lock));
}
TEST_F(EnvMirrorTest, Misc) {
std::string test_dir;
ASSERT_OK(env_->GetTestDirectory(&test_dir));
ASSERT_TRUE(!test_dir.empty());
std::unique_ptr<WritableFile> writable_file;
ASSERT_OK(env_->NewWritableFile("/a/b", &writable_file, soptions_));
// These are no-ops, but we test they return success.
ASSERT_OK(writable_file->Sync());
ASSERT_OK(writable_file->Flush());
ASSERT_OK(writable_file->Close());
writable_file.reset();
}
TEST_F(EnvMirrorTest, LargeWrite) {
const size_t kWriteSize = 300 * 1024;
char* scratch = new char[kWriteSize * 2];
std::string write_data;
for (size_t i = 0; i < kWriteSize; ++i) {
write_data.append(1, static_cast<char>(i));
}
std::unique_ptr<WritableFile> writable_file;
ASSERT_OK(env_->NewWritableFile("/dir/f", &writable_file, soptions_));
ASSERT_OK(writable_file->Append("foo"));
ASSERT_OK(writable_file->Append(write_data));
writable_file.reset();
std::unique_ptr<SequentialFile> seq_file;
Slice result;
ASSERT_OK(env_->NewSequentialFile("/dir/f", &seq_file, soptions_));
ASSERT_OK(seq_file->Read(3, &result, scratch)); // Read "foo".
ASSERT_EQ(0, result.compare("foo"));
size_t read = 0;
std::string read_data;
while (read < kWriteSize) {
ASSERT_OK(seq_file->Read(kWriteSize - read, &result, scratch));
read_data.append(result.data(), result.size());
read += result.size();
}
ASSERT_TRUE(write_data == read_data);
delete[] scratch;
}
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
#else
#include <stdio.h>
int main(int argc, char** argv) {
fprintf(stderr, "SKIPPED as EnvMirror is not supported in ROCKSDB_LITE\n");
return 0;
}
#endif // !ROCKSDB_LITE
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