2016-02-10 00:12:00 +01:00
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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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2017-07-16 01:03:42 +02:00
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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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2015-05-29 23:36:35 +02:00
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#ifndef ROCKSDB_LITE
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2017-05-22 19:21:38 +02:00
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#include <atomic>
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2016-12-16 20:17:26 +01:00
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#include <functional>
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2015-05-29 23:36:35 +02:00
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#include <string>
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2016-02-05 19:44:13 +01:00
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#include <utility>
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#include <vector>
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2015-05-29 23:36:35 +02:00
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#include "db/db_impl.h"
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#include "db/write_callback.h"
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#include "rocksdb/db.h"
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#include "rocksdb/write_batch.h"
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2017-02-06 23:43:55 +01:00
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#include "port/port.h"
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2017-04-06 22:59:31 +02:00
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#include "util/random.h"
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2016-02-05 19:44:13 +01:00
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#include "util/sync_point.h"
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2015-05-29 23:36:35 +02:00
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#include "util/testharness.h"
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using std::string;
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namespace rocksdb {
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class WriteCallbackTest : public testing::Test {
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public:
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string dbname;
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WriteCallbackTest() {
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dbname = test::TmpDir() + "/write_callback_testdb";
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}
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};
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class WriteCallbackTestWriteCallback1 : public WriteCallback {
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public:
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bool was_called = false;
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Status Callback(DB *db) override {
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was_called = true;
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// Make sure db is a DBImpl
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DBImpl* db_impl = dynamic_cast<DBImpl*> (db);
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if (db_impl == nullptr) {
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return Status::InvalidArgument("");
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}
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return Status::OK();
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}
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2016-02-05 19:44:13 +01:00
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bool AllowWriteBatching() override { return true; }
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2015-05-29 23:36:35 +02:00
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};
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class WriteCallbackTestWriteCallback2 : public WriteCallback {
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public:
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2018-03-05 22:08:17 +01:00
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Status Callback(DB* /*db*/) override { return Status::Busy(); }
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2016-02-05 19:44:13 +01:00
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bool AllowWriteBatching() override { return true; }
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};
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class MockWriteCallback : public WriteCallback {
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public:
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bool should_fail_ = false;
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bool allow_batching_ = false;
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2017-05-22 19:21:38 +02:00
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std::atomic<bool> was_called_{false};
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MockWriteCallback() {}
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MockWriteCallback(const MockWriteCallback& other) {
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should_fail_ = other.should_fail_;
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allow_batching_ = other.allow_batching_;
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was_called_.store(other.was_called_.load());
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}
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2016-02-05 19:44:13 +01:00
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2018-03-05 22:08:17 +01:00
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Status Callback(DB* /*db*/) override {
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2017-05-22 19:21:38 +02:00
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was_called_.store(true);
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2016-02-05 19:44:13 +01:00
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if (should_fail_) {
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return Status::Busy();
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} else {
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return Status::OK();
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}
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}
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bool AllowWriteBatching() override { return allow_batching_; }
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2015-05-29 23:36:35 +02:00
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};
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2016-02-05 19:44:13 +01:00
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TEST_F(WriteCallbackTest, WriteWithCallbackTest) {
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struct WriteOP {
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WriteOP(bool should_fail = false) { callback_.should_fail_ = should_fail; }
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void Put(const string& key, const string& val) {
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kvs_.push_back(std::make_pair(key, val));
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write_batch_.Put(key, val);
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}
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void Clear() {
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kvs_.clear();
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write_batch_.Clear();
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2017-05-22 19:21:38 +02:00
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callback_.was_called_.store(false);
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2016-02-05 19:44:13 +01:00
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}
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MockWriteCallback callback_;
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WriteBatch write_batch_;
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std::vector<std::pair<string, string>> kvs_;
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};
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2017-07-26 01:40:21 +02:00
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// In each scenario we'll launch multiple threads to write.
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// The size of each array equals to number of threads, and
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// each boolean in it denote whether callback of corresponding
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// thread should succeed or fail.
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2016-02-05 19:44:13 +01:00
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std::vector<std::vector<WriteOP>> write_scenarios = {
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{true},
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{false},
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{false, false},
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{true, true},
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{true, false},
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{false, true},
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{false, false, false},
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{true, true, true},
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{false, true, false},
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{true, false, true},
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{true, false, false, false, false},
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{false, false, false, false, true},
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{false, false, true, false, true},
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};
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2017-11-22 22:52:56 +01:00
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for (auto& seq_per_batch : {true, false}) {
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2017-06-24 23:06:43 +02:00
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for (auto& two_queues : {true, false}) {
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for (auto& allow_parallel : {true, false}) {
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for (auto& allow_batching : {true, false}) {
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for (auto& enable_WAL : {true, false}) {
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for (auto& enable_pipelined_write : {true, false}) {
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for (auto& write_group : write_scenarios) {
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Options options;
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options.create_if_missing = true;
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options.allow_concurrent_memtable_write = allow_parallel;
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options.enable_pipelined_write = enable_pipelined_write;
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2017-11-11 02:18:01 +01:00
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options.two_write_queues = two_queues;
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2017-11-22 22:52:56 +01:00
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if (options.enable_pipelined_write && seq_per_batch) {
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// This combination is not supported
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continue;
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}
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2017-11-11 02:18:01 +01:00
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if (options.enable_pipelined_write && options.two_write_queues) {
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2017-09-12 23:48:19 +02:00
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// This combination is not supported
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continue;
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}
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2017-06-24 23:06:43 +02:00
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ReadOptions read_options;
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DB* db;
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DBImpl* db_impl;
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DestroyDB(dbname, options);
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2017-11-22 22:52:56 +01:00
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DBOptions db_options(options);
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ColumnFamilyOptions cf_options(options);
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std::vector<ColumnFamilyDescriptor> column_families;
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column_families.push_back(
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ColumnFamilyDescriptor(kDefaultColumnFamilyName, cf_options));
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std::vector<ColumnFamilyHandle*> handles;
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2018-06-29 03:46:39 +02:00
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auto open_s =
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DBImpl::Open(db_options, dbname, column_families, &handles,
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&db, seq_per_batch, true /* batch_per_txn */);
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2017-11-22 22:52:56 +01:00
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ASSERT_OK(open_s);
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assert(handles.size() == 1);
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delete handles[0];
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2017-06-24 23:06:43 +02:00
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db_impl = dynamic_cast<DBImpl*>(db);
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ASSERT_TRUE(db_impl);
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2017-07-26 01:40:21 +02:00
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// Writers that have called JoinBatchGroup.
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std::atomic<uint64_t> threads_joining(0);
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// Writers that have linked to the queue
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std::atomic<uint64_t> threads_linked(0);
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// Writers that pass WriteThread::JoinBatchGroup:Wait sync-point.
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std::atomic<uint64_t> threads_verified(0);
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2017-06-24 23:06:43 +02:00
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std::atomic<uint64_t> seq(db_impl->GetLatestSequenceNumber());
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ASSERT_EQ(db_impl->GetLatestSequenceNumber(), 0);
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2017-07-26 01:40:21 +02:00
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rocksdb::SyncPoint::GetInstance()->SetCallBack(
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"WriteThread::JoinBatchGroup:Start", [&](void*) {
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uint64_t cur_threads_joining = threads_joining.fetch_add(1);
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// Wait for the last joined writer to link to the queue.
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// In this way the writers link to the queue one by one.
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// This allows us to confidently detect the first writer
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// who increases threads_linked as the leader.
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while (threads_linked.load() < cur_threads_joining) {
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}
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});
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// Verification once writers call JoinBatchGroup.
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2017-06-24 23:06:43 +02:00
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rocksdb::SyncPoint::GetInstance()->SetCallBack(
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"WriteThread::JoinBatchGroup:Wait", [&](void* arg) {
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2017-07-26 01:40:21 +02:00
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uint64_t cur_threads_linked = threads_linked.fetch_add(1);
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2017-06-24 23:06:43 +02:00
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bool is_leader = false;
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bool is_last = false;
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// who am i
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2017-07-26 01:40:21 +02:00
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is_leader = (cur_threads_linked == 0);
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is_last = (cur_threads_linked == write_group.size() - 1);
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2017-06-24 23:06:43 +02:00
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// check my state
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auto* writer = reinterpret_cast<WriteThread::Writer*>(arg);
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if (is_leader) {
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ASSERT_TRUE(writer->state ==
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WriteThread::State::STATE_GROUP_LEADER);
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} else {
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ASSERT_TRUE(writer->state ==
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WriteThread::State::STATE_INIT);
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}
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// (meta test) the first WriteOP should indeed be the first
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// and the last should be the last (all others can be out of
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// order)
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if (is_leader) {
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ASSERT_TRUE(writer->callback->Callback(nullptr).ok() ==
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!write_group.front().callback_.should_fail_);
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} else if (is_last) {
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ASSERT_TRUE(writer->callback->Callback(nullptr).ok() ==
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!write_group.back().callback_.should_fail_);
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}
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2017-07-26 01:40:21 +02:00
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threads_verified.fetch_add(1);
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// Wait here until all verification in this sync-point
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// callback finish for all writers.
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while (threads_verified.load() < write_group.size()) {
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2017-06-24 23:06:43 +02:00
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}
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});
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rocksdb::SyncPoint::GetInstance()->SetCallBack(
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"WriteThread::JoinBatchGroup:DoneWaiting", [&](void* arg) {
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// check my state
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auto* writer = reinterpret_cast<WriteThread::Writer*>(arg);
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if (!allow_batching) {
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// no batching so everyone should be a leader
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ASSERT_TRUE(writer->state ==
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WriteThread::State::STATE_GROUP_LEADER);
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} else if (!allow_parallel) {
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ASSERT_TRUE(writer->state ==
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WriteThread::State::STATE_COMPLETED ||
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(enable_pipelined_write &&
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writer->state ==
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WriteThread::State::
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STATE_MEMTABLE_WRITER_LEADER));
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}
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});
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std::atomic<uint32_t> thread_num(0);
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std::atomic<char> dummy_key(0);
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2017-07-26 01:40:21 +02:00
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// Each write thread create a random write batch and write to DB
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// with a write callback.
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2017-06-24 23:06:43 +02:00
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std::function<void()> write_with_callback_func = [&]() {
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uint32_t i = thread_num.fetch_add(1);
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Random rnd(i);
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// leaders gotta lead
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2017-07-26 01:40:21 +02:00
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while (i > 0 && threads_verified.load() < 1) {
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2017-06-24 23:06:43 +02:00
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}
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2017-05-19 23:24:23 +02:00
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2017-06-24 23:06:43 +02:00
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// loser has to lose
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while (i == write_group.size() - 1 &&
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2017-07-26 01:40:21 +02:00
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threads_verified.load() < write_group.size() - 1) {
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2017-06-24 23:06:43 +02:00
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}
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2017-05-19 23:24:23 +02:00
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2017-06-24 23:06:43 +02:00
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auto& write_op = write_group.at(i);
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write_op.Clear();
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write_op.callback_.allow_batching_ = allow_batching;
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2017-05-19 23:24:23 +02:00
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2017-06-24 23:06:43 +02:00
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// insert some keys
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for (uint32_t j = 0; j < rnd.Next() % 50; j++) {
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// grab unique key
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2017-07-26 01:40:21 +02:00
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char my_key = dummy_key.fetch_add(1);
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2016-02-16 21:39:55 +01:00
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2017-06-24 23:06:43 +02:00
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string skey(5, my_key);
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string sval(10, my_key);
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write_op.Put(skey, sval);
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2016-02-16 21:39:55 +01:00
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2017-11-22 22:52:56 +01:00
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if (!write_op.callback_.should_fail_ && !seq_per_batch) {
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2017-06-24 23:06:43 +02:00
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seq.fetch_add(1);
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}
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2016-02-16 21:39:55 +01:00
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}
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2017-11-22 22:52:56 +01:00
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if (!write_op.callback_.should_fail_ && seq_per_batch) {
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seq.fetch_add(1);
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}
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2016-02-05 19:44:13 +01:00
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2017-06-24 23:06:43 +02:00
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WriteOptions woptions;
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woptions.disableWAL = !enable_WAL;
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woptions.sync = enable_WAL;
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2017-12-01 08:39:56 +01:00
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Status s;
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2018-02-06 03:32:54 +01:00
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if (seq_per_batch) {
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2017-12-01 08:39:56 +01:00
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class PublishSeqCallback : public PreReleaseCallback {
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public:
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2017-12-07 02:04:32 +01:00
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PublishSeqCallback(DBImpl* db_impl_in)
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: db_impl_(db_impl_in) {}
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2018-03-22 22:27:44 +01:00
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virtual Status Callback(SequenceNumber last_seq,
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2018-04-05 20:05:11 +02:00
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bool /*not used*/) override {
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2017-12-01 08:39:56 +01:00
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db_impl_->SetLastPublishedSequence(last_seq);
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return Status::OK();
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}
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DBImpl* db_impl_;
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} publish_seq_callback(db_impl);
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2018-02-06 03:32:54 +01:00
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// seq_per_batch requires a natural batch separator or Noop
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WriteBatchInternal::InsertNoop(&write_op.write_batch_);
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const size_t ONE_BATCH = 1;
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s = db_impl->WriteImpl(
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woptions, &write_op.write_batch_, &write_op.callback_,
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nullptr, 0, false, nullptr, ONE_BATCH,
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two_queues ? &publish_seq_callback : nullptr);
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2017-12-01 08:39:56 +01:00
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} else {
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s = db_impl->WriteWithCallback(
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woptions, &write_op.write_batch_, &write_op.callback_);
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}
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2016-02-05 19:44:13 +01:00
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2017-06-24 23:06:43 +02:00
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if (write_op.callback_.should_fail_) {
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ASSERT_TRUE(s.IsBusy());
|
|
|
|
} else {
|
|
|
|
ASSERT_OK(s);
|
|
|
|
}
|
|
|
|
};
|
2016-02-05 19:44:13 +01:00
|
|
|
|
2017-06-24 23:06:43 +02:00
|
|
|
rocksdb::SyncPoint::GetInstance()->EnableProcessing();
|
2016-02-05 19:44:13 +01:00
|
|
|
|
2017-06-24 23:06:43 +02:00
|
|
|
// do all the writes
|
|
|
|
std::vector<port::Thread> threads;
|
|
|
|
for (uint32_t i = 0; i < write_group.size(); i++) {
|
|
|
|
threads.emplace_back(write_with_callback_func);
|
|
|
|
}
|
|
|
|
for (auto& t : threads) {
|
|
|
|
t.join();
|
|
|
|
}
|
2016-02-05 19:44:13 +01:00
|
|
|
|
2017-06-24 23:06:43 +02:00
|
|
|
rocksdb::SyncPoint::GetInstance()->DisableProcessing();
|
2016-02-05 19:44:13 +01:00
|
|
|
|
2017-06-24 23:06:43 +02:00
|
|
|
// check for keys
|
|
|
|
string value;
|
|
|
|
for (auto& w : write_group) {
|
|
|
|
ASSERT_TRUE(w.callback_.was_called_.load());
|
|
|
|
for (auto& kvp : w.kvs_) {
|
|
|
|
if (w.callback_.should_fail_) {
|
|
|
|
ASSERT_TRUE(
|
|
|
|
db->Get(read_options, kvp.first, &value).IsNotFound());
|
|
|
|
} else {
|
|
|
|
ASSERT_OK(db->Get(read_options, kvp.first, &value));
|
|
|
|
ASSERT_EQ(value, kvp.second);
|
|
|
|
}
|
2017-05-19 23:24:23 +02:00
|
|
|
}
|
2016-02-16 21:39:55 +01:00
|
|
|
}
|
2016-02-05 19:44:13 +01:00
|
|
|
|
2017-11-22 22:52:56 +01:00
|
|
|
ASSERT_EQ(seq.load(), db_impl->TEST_GetLastVisibleSequence());
|
2016-02-05 19:44:13 +01:00
|
|
|
|
2017-06-24 23:06:43 +02:00
|
|
|
delete db;
|
|
|
|
DestroyDB(dbname, options);
|
|
|
|
}
|
2017-05-19 23:24:23 +02:00
|
|
|
}
|
2016-02-16 21:39:55 +01:00
|
|
|
}
|
2016-02-05 19:44:13 +01:00
|
|
|
}
|
|
|
|
}
|
2017-06-24 23:06:43 +02:00
|
|
|
}
|
2016-02-05 19:44:13 +01:00
|
|
|
}
|
2017-11-22 22:52:56 +01:00
|
|
|
}
|
2016-02-05 19:44:13 +01:00
|
|
|
|
2015-05-29 23:36:35 +02:00
|
|
|
TEST_F(WriteCallbackTest, WriteCallBackTest) {
|
|
|
|
Options options;
|
|
|
|
WriteOptions write_options;
|
|
|
|
ReadOptions read_options;
|
|
|
|
string value;
|
|
|
|
DB* db;
|
|
|
|
DBImpl* db_impl;
|
|
|
|
|
2016-04-16 02:13:12 +02:00
|
|
|
DestroyDB(dbname, options);
|
|
|
|
|
2015-05-29 23:36:35 +02:00
|
|
|
options.create_if_missing = true;
|
|
|
|
Status s = DB::Open(options, dbname, &db);
|
|
|
|
ASSERT_OK(s);
|
|
|
|
|
|
|
|
db_impl = dynamic_cast<DBImpl*> (db);
|
|
|
|
ASSERT_TRUE(db_impl);
|
|
|
|
|
|
|
|
WriteBatch wb;
|
|
|
|
|
|
|
|
wb.Put("a", "value.a");
|
|
|
|
wb.Delete("x");
|
|
|
|
|
|
|
|
// Test a simple Write
|
|
|
|
s = db->Write(write_options, &wb);
|
|
|
|
ASSERT_OK(s);
|
|
|
|
|
|
|
|
s = db->Get(read_options, "a", &value);
|
|
|
|
ASSERT_OK(s);
|
|
|
|
ASSERT_EQ("value.a", value);
|
|
|
|
|
|
|
|
// Test WriteWithCallback
|
|
|
|
WriteCallbackTestWriteCallback1 callback1;
|
|
|
|
WriteBatch wb2;
|
|
|
|
|
|
|
|
wb2.Put("a", "value.a2");
|
|
|
|
|
|
|
|
s = db_impl->WriteWithCallback(write_options, &wb2, &callback1);
|
|
|
|
ASSERT_OK(s);
|
|
|
|
ASSERT_TRUE(callback1.was_called);
|
|
|
|
|
|
|
|
s = db->Get(read_options, "a", &value);
|
|
|
|
ASSERT_OK(s);
|
|
|
|
ASSERT_EQ("value.a2", value);
|
|
|
|
|
|
|
|
// Test WriteWithCallback for a callback that fails
|
|
|
|
WriteCallbackTestWriteCallback2 callback2;
|
|
|
|
WriteBatch wb3;
|
|
|
|
|
|
|
|
wb3.Put("a", "value.a3");
|
|
|
|
|
|
|
|
s = db_impl->WriteWithCallback(write_options, &wb3, &callback2);
|
|
|
|
ASSERT_NOK(s);
|
|
|
|
|
|
|
|
s = db->Get(read_options, "a", &value);
|
|
|
|
ASSERT_OK(s);
|
|
|
|
ASSERT_EQ("value.a2", value);
|
|
|
|
|
|
|
|
delete db;
|
|
|
|
DestroyDB(dbname, options);
|
|
|
|
}
|
|
|
|
|
|
|
|
} // namespace rocksdb
|
|
|
|
|
|
|
|
int main(int argc, char** argv) {
|
|
|
|
::testing::InitGoogleTest(&argc, argv);
|
|
|
|
return RUN_ALL_TESTS();
|
|
|
|
}
|
|
|
|
|
2015-07-20 19:54:15 +02:00
|
|
|
#else
|
|
|
|
#include <stdio.h>
|
|
|
|
|
2018-04-16 02:19:57 +02:00
|
|
|
int main(int /*argc*/, char** /*argv*/) {
|
2015-07-20 19:54:15 +02:00
|
|
|
fprintf(stderr,
|
|
|
|
"SKIPPED as WriteWithCallback is not supported in ROCKSDB_LITE\n");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif // !ROCKSDB_LITE
|