5d68243e61
Summary: Submitting on behalf of another employee. Closes https://github.com/facebook/rocksdb/pull/3557 Differential Revision: D7146025 Pulled By: ajkr fbshipit-source-id: 495ca5db5beec3789e671e26f78170957704e77e
143 lines
4.3 KiB
C++
143 lines
4.3 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#include "table/mock_table.h"
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#include "db/dbformat.h"
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#include "port/port.h"
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#include "rocksdb/table_properties.h"
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#include "table/get_context.h"
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#include "util/coding.h"
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#include "util/file_reader_writer.h"
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namespace rocksdb {
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namespace mock {
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namespace {
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const InternalKeyComparator icmp_(BytewiseComparator());
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} // namespace
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stl_wrappers::KVMap MakeMockFile(
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std::initializer_list<std::pair<const std::string, std::string>> l) {
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return stl_wrappers::KVMap(l, stl_wrappers::LessOfComparator(&icmp_));
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}
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InternalIterator* MockTableReader::NewIterator(const ReadOptions&,
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Arena* /*arena*/,
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bool /*skip_filters*/) {
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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, bool /*skip_filters*/) {
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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 TableReaderOptions& /*table_reader_options*/,
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unique_ptr<RandomAccessFileReader>&& file, uint64_t /*file_size*/,
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unique_ptr<TableReader>* table_reader,
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bool /*prefetch_index_and_filter_in_cache*/) 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 TableBuilderOptions& /*table_builder_options*/,
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uint32_t /*column_family_id*/, WritableFileWriter* file) 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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stl_wrappers::KVMap 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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WritableFileWriter file_writer(std::move(file), EnvOptions());
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uint32_t id = GetAndWriteNextID(&file_writer);
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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(WritableFileWriter* 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(RandomAccessFileReader* 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(
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const stl_wrappers::KVMap& file_contents) {
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ASSERT_EQ(file_system_.files.size(), 1U);
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ASSERT_EQ(file_contents, file_system_.files.begin()->second);
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}
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void MockTableFactory::AssertLatestFile(
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const stl_wrappers::KVMap& 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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if (file_contents != latest->second) {
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std::cout << "Wrong content! Content of latest file:" << std::endl;
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for (const auto& kv : latest->second) {
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ParsedInternalKey ikey;
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std::string key, value;
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std::tie(key, value) = kv;
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ParseInternalKey(Slice(key), &ikey);
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std::cout << ikey.DebugString(false) << " -> " << value << std::endl;
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}
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FAIL();
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}
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}
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} // namespace mock
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} // namespace rocksdb
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