9be338cf9d
Summary: This is just a simple test that passes two files though a compaction. It shows the framework so that people can continue building new compaction *unit* tests. In the future we might want to move some Compaction* tests from DBTest here. For example, CompactBetweenSnapshot seems a good candidate. Hopefully this test can be simpler when we mock out VersionSet. Test Plan: this is a test Reviewers: ljin, rven, yhchiang, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D28449
117 lines
3.6 KiB
C++
117 lines
3.6 KiB
C++
// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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// Copyright (c) 2013, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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#include "rocksdb/table_properties.h"
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#include "table/mock_table.h"
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#include "table/get_context.h"
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#include "db/dbformat.h"
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#include "port/port.h"
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#include "util/coding.h"
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namespace rocksdb {
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namespace mock {
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Iterator* MockTableReader::NewIterator(const ReadOptions&, Arena* arena) {
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return new MockTableIterator(table_);
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}
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Status MockTableReader::Get(const ReadOptions&, const Slice& key,
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GetContext* get_context) {
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std::unique_ptr<MockTableIterator> iter(new MockTableIterator(table_));
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for (iter->Seek(key); iter->Valid(); iter->Next()) {
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ParsedInternalKey parsed_key;
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if (!ParseInternalKey(iter->key(), &parsed_key)) {
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return Status::Corruption(Slice());
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}
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if (!get_context->SaveValue(parsed_key, iter->value())) {
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break;
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}
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}
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return Status::OK();
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}
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std::shared_ptr<const TableProperties> MockTableReader::GetTableProperties()
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const {
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return std::shared_ptr<const TableProperties>(new TableProperties());
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}
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MockTableFactory::MockTableFactory() : next_id_(1) {}
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Status MockTableFactory::NewTableReader(
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const ImmutableCFOptions& ioptions, const EnvOptions& env_options,
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const InternalKeyComparator& internal_key,
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unique_ptr<RandomAccessFile>&& file, uint64_t file_size,
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unique_ptr<TableReader>* table_reader) const {
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uint32_t id = GetIDFromFile(file.get());
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MutexLock lock_guard(&file_system_.mutex);
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auto it = file_system_.files.find(id);
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if (it == file_system_.files.end()) {
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return Status::IOError("Mock file not found");
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}
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table_reader->reset(new MockTableReader(it->second));
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return Status::OK();
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}
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TableBuilder* MockTableFactory::NewTableBuilder(
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const ImmutableCFOptions& ioptions,
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const InternalKeyComparator& internal_key, WritableFile* file,
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const CompressionType compression_type,
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const CompressionOptions& compression_opts) const {
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uint32_t id = GetAndWriteNextID(file);
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return new MockTableBuilder(id, &file_system_);
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}
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Status MockTableFactory::CreateMockTable(Env* env, const std::string& fname,
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MockFileContents file_contents) {
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std::unique_ptr<WritableFile> file;
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auto s = env->NewWritableFile(fname, &file, EnvOptions());
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if (!s.ok()) {
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return s;
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}
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uint32_t id = GetAndWriteNextID(file.get());
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file_system_.files.insert({id, std::move(file_contents)});
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return Status::OK();
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}
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uint32_t MockTableFactory::GetAndWriteNextID(WritableFile* file) const {
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uint32_t next_id = next_id_.fetch_add(1);
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char buf[4];
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EncodeFixed32(buf, next_id);
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file->Append(Slice(buf, 4));
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return next_id;
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}
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uint32_t MockTableFactory::GetIDFromFile(RandomAccessFile* file) const {
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char buf[4];
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Slice result;
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file->Read(0, 4, &result, buf);
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assert(result.size() == 4);
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return DecodeFixed32(buf);
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}
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void MockTableFactory::AssertSingleFile(const MockFileContents& file_contents) {
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ASSERT_EQ(file_system_.files.size(), 1U);
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ASSERT_TRUE(file_contents == file_system_.files.begin()->second);
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}
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void MockTableFactory::AssertLatestFile(const MockFileContents& file_contents) {
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ASSERT_GE(file_system_.files.size(), 1U);
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auto latest = file_system_.files.end();
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--latest;
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ASSERT_TRUE(file_contents == latest->second);
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}
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} // namespace mock
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} // namespace rocksdb
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