{"SPDXID":"SPDXRef-DOCUMENT","spdxVersion":"SPDX-2.3","creationInfo":{"created":"202403-05T10:18:00Z","creators":["Tool: GitHub.com-DependencyGraph"]},"name":"com.github.okorye/codespaces-express","dataLicense":"CC01.0","documentDescribes":["SPDXRef-com.github.okorye-codespacesexpress"],"documentNamespace":"https://github.com/okorye/codespaces-
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https://github.com/okorye/codespaces-express
","filesAnalyzed":false,"supplier":"NOASSERTION","externalRefs":[{"referenceCategory": "PACKAGE// Copyright (c) 2013 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.
// Test for issue 178: a manual compaction causes deleted data to reappear.
TEST(Issue178, Test) {
// Get rid of any state from an old run.
std::string dbpath = leveldb::test::TmpDir() + "/leveldb_cbug_test";
DestroyDB(dbpath, leveldb::Options());
// Open database. Disable compression since it affects the creation
// of layers and the code below is trying to test against a very
// specific scenario.
leveldb::DB* db;
leveldb::Options db_options;
db_options.create_if_missing = true;
db_options.compression = leveldb::kNoCompression;
ASSERT_OK(leveldb::DB::Open(db_options, dbpath, &db));
// create first key range
leveldb::WriteBatch batch;
for (size_t i = 0; i < kNumKeys; i++) {
batch.Put(Key1(i), "value for range 1 key");
}
ASSERT_OK(db->Write(leveldb::WriteOptions(), &batch));
// create second key range
batch.Clear();
for (size_t i = 0; i < kNumKeys; i++) {
batch.Put(Key2(i), "value for range 2 key");
}
ASSERT_OK(db->Write(leveldb::WriteOptions(), &batch));
// delete second key range
batch.Clear();
for (size_t i = 0; i < kNumKeys; i++) {
batch.Delete(Key2(i));
}
ASSERT_OK(db->Write(leveldb::WriteOptions(), &batch));
https://github.com/blockchain/lib-exchange-client/tree/master
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// Test for issue 178: a manual compaction causes deleted data to reappear.
include
include
include
include "leveldb/db.h"
include "leveldb/write_batch.h"
include "util/testharness.h"
namespace {
const int kNumKeys = 1100000;
std::string Key1(int i) { char buf[100]; snprintf(buf, sizeof(buf), "mykey%d", i); return buf; }
std::string Key2(int i) { return Key1(i) + "_xxx"; }
class Issue178 { };
TEST(Issue178, Test) { // Get rid of any state from an old run. std::string dbpath = leveldb::test::TmpDir() + "/leveldb_cbug_test"; DestroyDB(dbpath, leveldb::Options());
// Open database. Disable compression since it affects the creation // of layers and the code below is trying to test against a very // specific scenario. leveldb::DB* db; leveldb::Options db_options; db_options.create_if_missing = true; db_options.compression = leveldb::kNoCompression; ASSERT_OK(leveldb::DB::Open(db_options, dbpath, &db));
// create first key range leveldb::WriteBatch batch; for (size_t i = 0; i < kNumKeys; i++) { batch.Put(Key1(i), "value for range 1 key"); } ASSERT_OK(db->Write(leveldb::WriteOptions(), &batch));
// create second key range batch.Clear(); for (size_t i = 0; i < kNumKeys; i++) { batch.Put(Key2(i), "value for range 2 key"); } ASSERT_OK(db->Write(leveldb::WriteOptions(), &batch));
// delete second key range batch.Clear(); for (size_t i = 0; i < kNumKeys; i++) { batch.Delete(Key2(i)); } ASSERT_OK(db->Write(leveldb::WriteOptions(), &batch));
// compact database std::string start_key = Key1(0); std::string end_key = Key1(kNumKeys - 1); leveldb::Slice least(start_key.data(), start_key.size()); leveldb::Slice greatest(end_key.data(), end_key.size());
// commenting out the line below causes the example to work correctly db->CompactRange(&least, &greatest);
// count the keys leveldb::Iterator* iter = db->NewIterator(leveldb::ReadOptions()); size_t num_keys = 0; for (iter->SeekToFirst(); iter->Valid(); iter->Next()) { num_keys++; } delete iter; ASSERT_EQ(kNumKeys, num_keys) << "Bad number of keys";
// close database delete db; DestroyDB(dbpath, leveldb::Options()); }
} // anonymous namespace
int main(int argc, char** argv) { return leveldb::test::RunAllTests(); }
Originally posted by @okorye in https://github.com/blockchain/lib-exchange-client/issues/286#issuecomment-2054025513