rocksdb/util/blob_store_test.cc

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// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#include "util/blob_store.h"
#include "util/testharness.h"
#include "util/testutil.h"
#include "util/random.h"
#include <cstdlib>
#include <string>
namespace rocksdb {
using namespace std;
class BlobStoreTest { };
TEST(BlobStoreTest, RangeParseTest) {
Blob e;
for (int i = 0; i < 5; ++i) {
e.chunks.push_back(BlobChunk(rand(), rand(), rand()));
}
string x = e.ToString();
Blob nx(x);
ASSERT_EQ(nx.ToString(), x);
}
// make sure we're reusing the freed space
TEST(BlobStoreTest, SanityTest) {
const uint64_t block_size = 10;
const uint32_t blocks_per_file = 20;
Random random(5);
BlobStore blob_store(test::TmpDir() + "/blob_store_test",
block_size,
blocks_per_file,
1000,
Env::Default());
string buf;
// put string of size 170
test::RandomString(&random, 170, &buf);
Blob r1;
ASSERT_OK(blob_store.Put(Slice(buf), &r1));
// use the first file
for (size_t i = 0; i < r1.chunks.size(); ++i) {
ASSERT_EQ(r1.chunks[0].bucket_id, 0u);
}
// put string of size 30
test::RandomString(&random, 30, &buf);
Blob r2;
ASSERT_OK(blob_store.Put(Slice(buf), &r2));
// use the first file
for (size_t i = 0; i < r2.chunks.size(); ++i) {
ASSERT_EQ(r2.chunks[0].bucket_id, 0u);
}
// delete blob of size 170
ASSERT_OK(blob_store.Delete(r1));
// put a string of size 100
test::RandomString(&random, 100, &buf);
Blob r3;
ASSERT_OK(blob_store.Put(Slice(buf), &r3));
// use the first file
for (size_t i = 0; i < r3.chunks.size(); ++i) {
ASSERT_EQ(r3.chunks[0].bucket_id, 0u);
}
// put a string of size 70
test::RandomString(&random, 70, &buf);
Blob r4;
ASSERT_OK(blob_store.Put(Slice(buf), &r4));
// use the first file
for (size_t i = 0; i < r4.chunks.size(); ++i) {
ASSERT_EQ(r4.chunks[0].bucket_id, 0u);
}
// put a string of size 5
test::RandomString(&random, 5, &buf);
Blob r5;
ASSERT_OK(blob_store.Put(Slice(buf), &r5));
// now you get to use the second file
for (size_t i = 0; i < r5.chunks.size(); ++i) {
ASSERT_EQ(r5.chunks[0].bucket_id, 1u);
}
}
TEST(BlobStoreTest, FragmentedChunksTest) {
const uint64_t block_size = 10;
const uint32_t blocks_per_file = 20;
Random random(5);
BlobStore blob_store(test::TmpDir() + "/blob_store_test",
block_size,
blocks_per_file,
1000,
Env::Default());
string buf;
vector <Blob> r(4);
// put 4 strings of size 50
for (int k = 0; k < 4; ++k) {
test::RandomString(&random, 50, &buf);
ASSERT_OK(blob_store.Put(Slice(buf), &r[k]));
// use the first file
for (size_t i = 0; i < r[k].chunks.size(); ++i) {
ASSERT_EQ(r[k].chunks[0].bucket_id, 0u);
}
}
// delete the first and third
ASSERT_OK(blob_store.Delete(r[0]));
ASSERT_OK(blob_store.Delete(r[2]));
// put string of size 100. it should reuse space that we deleting
// by deleting first and third strings of size 50
test::RandomString(&random, 100, &buf);
Blob r2;
ASSERT_OK(blob_store.Put(Slice(buf), &r2));
// use the first file
for (size_t i = 0; i < r2.chunks.size(); ++i) {
ASSERT_EQ(r2.chunks[0].bucket_id, 0u);
}
}
TEST(BlobStoreTest, CreateAndStoreTest) {
const uint64_t block_size = 10;
const uint32_t blocks_per_file = 1000;
const int max_blurb_size = 300;
Random random(5);
BlobStore blob_store(test::TmpDir() + "/blob_store_test",
block_size,
blocks_per_file,
10000,
Env::Default());
vector<pair<Blob, string>> ranges;
for (int i = 0; i < 20000; ++i) {
int decision = rand() % 5;
if (decision <= 2 || ranges.size() == 0) {
string buf;
int size_blocks = (rand() % max_blurb_size + 1);
int string_size = size_blocks * block_size - (rand() % block_size);
test::RandomString(&random, string_size, &buf);
Blob r;
ASSERT_OK(blob_store.Put(Slice(buf), &r));
ranges.push_back(make_pair(r, buf));
} else if (decision == 3) {
int ti = rand() % ranges.size();
string out_buf;
ASSERT_OK(blob_store.Get(ranges[ti].first, &out_buf));
ASSERT_EQ(ranges[ti].second, out_buf);
} else {
int ti = rand() % ranges.size();
ASSERT_OK(blob_store.Delete(ranges[ti].first));
ranges.erase(ranges.begin() + ti);
}
}
ASSERT_OK(blob_store.Sync());
}
TEST(BlobStoreTest, MaxSizeTest) {
const uint64_t block_size = 10;
const uint32_t blocks_per_file = 100;
const int max_buckets = 10;
Random random(5);
BlobStore blob_store(test::TmpDir() + "/blob_store_test",
block_size,
blocks_per_file,
max_buckets,
Env::Default());
string buf;
for (int i = 0; i < max_buckets; ++i) {
test::RandomString(&random, 1000, &buf);
Blob r;
ASSERT_OK(blob_store.Put(Slice(buf), &r));
}
test::RandomString(&random, 1000, &buf);
Blob r;
// should fail because max size
Status s = blob_store.Put(Slice(buf), &r);
ASSERT_EQ(s.ok(), false);
}
} // namespace rocksdb
int main(int argc, char** argv) {
return rocksdb::test::RunAllTests();
}