979fbdc696
Summary: Each DB has a globally unique ID. A DB can be physically copied around, or backed-up and restored, and the users should be identify the same DB. This unique ID right now is stored as plain text in file IDENTITY under the DB directory. This approach introduces at least two problems: (1) the file is not checksumed; (2) the source of truth of a DB is the manifest file, which can be copied separately from IDENTITY file, causing the DB ID to be wrong. The goal of this PR is solve this problem by moving the DB ID to manifest. To begin with we will write to both identity file and manifest. Write to Manifest is controlled via the flag write_dbid_to_manifest in Options and default is false. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5725 Test Plan: Added unit tests. Differential Revision: D16963840 Pulled By: vjnadimpalli fbshipit-source-id: 8a86a4c8c82c716003c40fd6b9d2d758030d92e9
258 lines
8.3 KiB
C++
258 lines
8.3 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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//
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// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
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// 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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#include "db/version_edit.h"
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#include "test_util/sync_point.h"
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#include "test_util/testharness.h"
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#include "util/coding.h"
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namespace rocksdb {
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static void TestEncodeDecode(const VersionEdit& edit) {
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std::string encoded, encoded2;
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edit.EncodeTo(&encoded);
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VersionEdit parsed;
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Status s = parsed.DecodeFrom(encoded);
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ASSERT_TRUE(s.ok()) << s.ToString();
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parsed.EncodeTo(&encoded2);
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ASSERT_EQ(encoded, encoded2);
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}
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class VersionEditTest : public testing::Test {};
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TEST_F(VersionEditTest, EncodeDecode) {
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static const uint64_t kBig = 1ull << 50;
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static const uint32_t kBig32Bit = 1ull << 30;
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VersionEdit edit;
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for (int i = 0; i < 4; i++) {
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TestEncodeDecode(edit);
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edit.AddFile(3, kBig + 300 + i, kBig32Bit + 400 + i, 0,
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InternalKey("foo", kBig + 500 + i, kTypeValue),
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InternalKey("zoo", kBig + 600 + i, kTypeDeletion),
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kBig + 500 + i, kBig + 600 + i, false);
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edit.DeleteFile(4, kBig + 700 + i);
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}
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edit.SetComparatorName("foo");
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edit.SetLogNumber(kBig + 100);
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edit.SetNextFile(kBig + 200);
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edit.SetLastSequence(kBig + 1000);
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TestEncodeDecode(edit);
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}
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TEST_F(VersionEditTest, EncodeDecodeNewFile4) {
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static const uint64_t kBig = 1ull << 50;
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VersionEdit edit;
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edit.AddFile(3, 300, 3, 100, InternalKey("foo", kBig + 500, kTypeValue),
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InternalKey("zoo", kBig + 600, kTypeDeletion), kBig + 500,
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kBig + 600, true);
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edit.AddFile(4, 301, 3, 100, InternalKey("foo", kBig + 501, kTypeValue),
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InternalKey("zoo", kBig + 601, kTypeDeletion), kBig + 501,
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kBig + 601, false);
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edit.AddFile(5, 302, 0, 100, InternalKey("foo", kBig + 502, kTypeValue),
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InternalKey("zoo", kBig + 602, kTypeDeletion), kBig + 502,
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kBig + 602, true);
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edit.DeleteFile(4, 700);
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edit.SetComparatorName("foo");
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edit.SetLogNumber(kBig + 100);
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edit.SetNextFile(kBig + 200);
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edit.SetLastSequence(kBig + 1000);
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TestEncodeDecode(edit);
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std::string encoded, encoded2;
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edit.EncodeTo(&encoded);
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VersionEdit parsed;
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Status s = parsed.DecodeFrom(encoded);
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ASSERT_TRUE(s.ok()) << s.ToString();
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auto& new_files = parsed.GetNewFiles();
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ASSERT_TRUE(new_files[0].second.marked_for_compaction);
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ASSERT_TRUE(!new_files[1].second.marked_for_compaction);
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ASSERT_TRUE(new_files[2].second.marked_for_compaction);
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ASSERT_EQ(3, new_files[0].second.fd.GetPathId());
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ASSERT_EQ(3, new_files[1].second.fd.GetPathId());
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ASSERT_EQ(0, new_files[2].second.fd.GetPathId());
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}
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TEST_F(VersionEditTest, ForwardCompatibleNewFile4) {
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static const uint64_t kBig = 1ull << 50;
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VersionEdit edit;
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edit.AddFile(3, 300, 3, 100, InternalKey("foo", kBig + 500, kTypeValue),
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InternalKey("zoo", kBig + 600, kTypeDeletion), kBig + 500,
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kBig + 600, true);
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edit.AddFile(4, 301, 3, 100, InternalKey("foo", kBig + 501, kTypeValue),
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InternalKey("zoo", kBig + 601, kTypeDeletion), kBig + 501,
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kBig + 601, false);
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edit.DeleteFile(4, 700);
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edit.SetComparatorName("foo");
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edit.SetLogNumber(kBig + 100);
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edit.SetNextFile(kBig + 200);
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edit.SetLastSequence(kBig + 1000);
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std::string encoded;
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// Call back function to add extra customized builds.
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bool first = true;
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rocksdb::SyncPoint::GetInstance()->SetCallBack(
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"VersionEdit::EncodeTo:NewFile4:CustomizeFields", [&](void* arg) {
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std::string* str = reinterpret_cast<std::string*>(arg);
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PutVarint32(str, 33);
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const std::string str1 = "random_string";
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PutLengthPrefixedSlice(str, str1);
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if (first) {
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first = false;
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PutVarint32(str, 22);
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const std::string str2 = "s";
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PutLengthPrefixedSlice(str, str2);
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}
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});
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rocksdb::SyncPoint::GetInstance()->EnableProcessing();
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edit.EncodeTo(&encoded);
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rocksdb::SyncPoint::GetInstance()->DisableProcessing();
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VersionEdit parsed;
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Status s = parsed.DecodeFrom(encoded);
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ASSERT_TRUE(s.ok()) << s.ToString();
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ASSERT_TRUE(!first);
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auto& new_files = parsed.GetNewFiles();
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ASSERT_TRUE(new_files[0].second.marked_for_compaction);
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ASSERT_TRUE(!new_files[1].second.marked_for_compaction);
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ASSERT_EQ(3, new_files[0].second.fd.GetPathId());
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ASSERT_EQ(3, new_files[1].second.fd.GetPathId());
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ASSERT_EQ(1u, parsed.GetDeletedFiles().size());
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}
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TEST_F(VersionEditTest, NewFile4NotSupportedField) {
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static const uint64_t kBig = 1ull << 50;
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VersionEdit edit;
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edit.AddFile(3, 300, 3, 100, InternalKey("foo", kBig + 500, kTypeValue),
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InternalKey("zoo", kBig + 600, kTypeDeletion), kBig + 500,
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kBig + 600, true);
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edit.SetComparatorName("foo");
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edit.SetLogNumber(kBig + 100);
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edit.SetNextFile(kBig + 200);
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edit.SetLastSequence(kBig + 1000);
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std::string encoded;
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// Call back function to add extra customized builds.
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rocksdb::SyncPoint::GetInstance()->SetCallBack(
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"VersionEdit::EncodeTo:NewFile4:CustomizeFields", [&](void* arg) {
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std::string* str = reinterpret_cast<std::string*>(arg);
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const std::string str1 = "s";
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PutLengthPrefixedSlice(str, str1);
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});
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rocksdb::SyncPoint::GetInstance()->EnableProcessing();
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edit.EncodeTo(&encoded);
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rocksdb::SyncPoint::GetInstance()->DisableProcessing();
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VersionEdit parsed;
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Status s = parsed.DecodeFrom(encoded);
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ASSERT_NOK(s);
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}
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TEST_F(VersionEditTest, EncodeEmptyFile) {
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VersionEdit edit;
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edit.AddFile(0, 0, 0, 0, InternalKey(), InternalKey(), 0, 0, false);
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std::string buffer;
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ASSERT_TRUE(!edit.EncodeTo(&buffer));
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}
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TEST_F(VersionEditTest, ColumnFamilyTest) {
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VersionEdit edit;
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edit.SetColumnFamily(2);
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edit.AddColumnFamily("column_family");
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edit.SetMaxColumnFamily(5);
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TestEncodeDecode(edit);
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edit.Clear();
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edit.SetColumnFamily(3);
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edit.DropColumnFamily();
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TestEncodeDecode(edit);
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}
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TEST_F(VersionEditTest, MinLogNumberToKeep) {
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VersionEdit edit;
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edit.SetMinLogNumberToKeep(13);
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TestEncodeDecode(edit);
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edit.Clear();
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edit.SetMinLogNumberToKeep(23);
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TestEncodeDecode(edit);
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}
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TEST_F(VersionEditTest, AtomicGroupTest) {
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VersionEdit edit;
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edit.MarkAtomicGroup(1);
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TestEncodeDecode(edit);
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}
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TEST_F(VersionEditTest, IgnorableField) {
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VersionEdit ve;
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std::string encoded;
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// Size of ignorable field is too large
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PutVarint32Varint64(&encoded, 2 /* kLogNumber */, 66);
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// This is a customized ignorable tag
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PutVarint32Varint64(&encoded,
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0x2710 /* A field with kTagSafeIgnoreMask set */,
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5 /* fieldlength 5 */);
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encoded += "abc"; // Only fills 3 bytes,
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ASSERT_NOK(ve.DecodeFrom(encoded));
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encoded.clear();
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// Error when seeing unidentified tag that is not ignorable
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PutVarint32Varint64(&encoded, 2 /* kLogNumber */, 66);
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// This is a customized ignorable tag
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PutVarint32Varint64(&encoded, 666 /* A field with kTagSafeIgnoreMask unset */,
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3 /* fieldlength 3 */);
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encoded += "abc"; // Fill 3 bytes
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PutVarint32Varint64(&encoded, 3 /* next file number */, 88);
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ASSERT_NOK(ve.DecodeFrom(encoded));
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// Safely ignore an identified but safely ignorable entry
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encoded.clear();
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PutVarint32Varint64(&encoded, 2 /* kLogNumber */, 66);
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// This is a customized ignorable tag
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PutVarint32Varint64(&encoded,
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0x2710 /* A field with kTagSafeIgnoreMask set */,
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3 /* fieldlength 3 */);
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encoded += "abc"; // Fill 3 bytes
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PutVarint32Varint64(&encoded, 3 /* kNextFileNumber */, 88);
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ASSERT_OK(ve.DecodeFrom(encoded));
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ASSERT_TRUE(ve.has_log_number());
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ASSERT_TRUE(ve.has_next_file_number());
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ASSERT_EQ(66, ve.log_number());
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ASSERT_EQ(88, ve.next_file_number());
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}
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TEST_F(VersionEditTest, DbId) {
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VersionEdit edit;
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edit.SetDBId("ab34-cd12-435f-er00");
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TestEncodeDecode(edit);
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edit.Clear();
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edit.SetDBId("34ba-cd12-435f-er01");
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TestEncodeDecode(edit);
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}
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} // namespace rocksdb
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int main(int argc, char** argv) {
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::testing::InitGoogleTest(&argc, argv);
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return RUN_ALL_TESTS();
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}
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