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more testing and file2 zstd now passes tests with varying frame sizes

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and 1.5gig files
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Green Sky 2024-03-30 13:50:31 +01:00
parent def7fc1959
commit 8b17ed195f
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2 changed files with 158 additions and 11 deletions
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14
src/fragment_store/file2_zstd.cpp
View File

@ -52,7 +52,7 @@ bool File2ZSTDW::write(const ByteSpan data, int64_t pos) {
}
_real_file.write(ByteSpan{compressed_buffer.data(), output.pos});
} while (input.pos < input.size && remaining_ret != 0 && _real_file.isGood());
} while ((input.pos < input.size || remaining_ret != 0) && _real_file.isGood());
return _real_file.isGood();
}
@ -105,11 +105,11 @@ std::variant<ByteSpan, std::vector<uint8_t>> File2ZSTDR::read(uint64_t size, int
if (!feedInput(_real_file.read(request_size, -1))) {
return ret_data;
}
std::cout << "---- fed input " << _z_input.size << "bytes\n";
// if _z_input.size < _in_buffer.size() -> assume eof?
if (_z_input.size < request_size) {
eof = true;
std::cout << "---- eof\n";
//std::cout << "---- eof\n";
}
}
@ -124,6 +124,12 @@ std::variant<ByteSpan, std::vector<uint8_t>> File2ZSTDR::read(uint64_t size, int
// no new decomp data?
if (output.pos == 0) {
if (ret != 0) {
// if not error and not 0, indicates that
// there is additional flushing needed
continue;
}
assert(eof || ret == 0);
break;
}
@ -157,7 +163,6 @@ bool File2ZSTDR::feedInput(std::variant<ByteSpan, std::vector<uint8_t>>&& read_b
// TODO: optimize, we copy the buffer, but we might not need to
if (std::holds_alternative<ByteSpan>(read_buff)) {
const auto& span = std::get<ByteSpan>(read_buff);
std::cout << "---- feedInput got span " << span.size << "\n";
if (span.size > _in_buffer.size()) {
// error, how did we read more than we asked for??
return {};
@ -176,7 +181,6 @@ bool File2ZSTDR::feedInput(std::variant<ByteSpan, std::vector<uint8_t>>&& read_b
}
} else if (std::holds_alternative<std::vector<uint8_t>>(read_buff)) {
auto& vec = std::get<std::vector<uint8_t>>(read_buff);
std::cout << "---- feedInput got vec " << vec.size() << "\n";
if (vec.size() > _in_buffer.size()) {
// error, how did we read more than we asked for??
return {};

155
src/fragment_store/test_file_zstd.cpp
View File

@ -7,6 +7,8 @@
#include <iostream>
#include <variant>
#include <algorithm>
#include <vector>
#include <random>
#include <cassert>
const static std::string_view test_text1{"test1 1234 1234 :) 1234 5678 88888888\n"};
@ -35,7 +37,7 @@ const static ByteSpan data_test_text3{
};
int main(void) {
const auto temp_dir = std::filesystem::temp_directory_path() / "file2wzstdtests";
const auto temp_dir = std::filesystem::temp_directory_path() / "file2_zstd_tests";
std::filesystem::create_directories(temp_dir); // making sure
assert(std::filesystem::exists(temp_dir));
@ -92,8 +94,8 @@ int main(void) {
//std::cout << "decomp: " << std::string_view{reinterpret_cast<const char*>(r_res_vec.data()), r_res_vec.size()};
assert(std::get<std::vector<uint8_t>>(r_res_var).size() == data_test_text1.size);
assert(std::equal(data_test_text1.cbegin(), data_test_text1.cend(), std::get<std::vector<uint8_t>>(r_res_var).cbegin()));
assert(r_res_vec.size() == data_test_text1.size);
assert(std::equal(data_test_text1.cbegin(), data_test_text1.cend(), r_res_vec.cbegin()));
}
{ // readback data_test_text2
@ -106,11 +108,11 @@ int main(void) {
//std::cout << "decomp: " << std::string_view{reinterpret_cast<const char*>(r_res_vec.data()), r_res_vec.size()};
assert(std::get<std::vector<uint8_t>>(r_res_var).size() == data_test_text2.size);
assert(r_res_vec.size() == data_test_text2.size);
assert(std::equal(
data_test_text2.cbegin(),
data_test_text2.cend(),
std::get<std::vector<uint8_t>>(r_res_var).cbegin()
r_res_vec.cbegin()
));
}
@ -124,7 +126,7 @@ int main(void) {
//std::cout << "decomp: " << std::string_view{reinterpret_cast<const char*>(r_res_vec.data()), r_res_vec.size()};
assert(std::get<std::vector<uint8_t>>(r_res_var).size() == data_test_text3.size);
assert(r_res_vec.size() == data_test_text3.size);
assert(std::equal(
data_test_text3.cbegin(),
data_test_text3.cend(),
@ -145,6 +147,147 @@ int main(void) {
}
}
const auto test2_file_path = temp_dir / "testfile2.zstd";
{ // write and read a single frame with increasing size
for (size_t fslog = 1; fslog <= 25; fslog++) {
const size_t frame_size = 1<<fslog;
//std::cerr << "fs: " << frame_size << "\n";
{ // write
std::minstd_rand rng_data{11*1337};
File2WFile f_w_file{test2_file_path.c_str(), true};
assert(f_w_file.isGood());
File2ZSTDW f_w_zstd{f_w_file};
assert(f_w_zstd.isGood());
assert(f_w_file.isGood());
std::vector<uint8_t> tmp_data(frame_size);
for (auto& e : tmp_data) {
e = uint8_t(rng_data() & 0xff); // cutoff bad but good enough
}
assert(tmp_data.size() == frame_size);
bool res = f_w_zstd.write(ByteSpan{tmp_data});
assert(res);
assert(f_w_zstd.isGood());
assert(f_w_file.isGood());
}
{ // read
std::minstd_rand rng_data{11*1337};
File2RFile f_r_file{test2_file_path.c_str()};
assert(f_r_file.isGood());
File2ZSTDR f_r_zstd{f_r_file};
assert(f_r_zstd.isGood());
assert(f_r_file.isGood());
{ // read frame
auto r_res_var = f_r_zstd.read(frame_size);
assert(std::holds_alternative<std::vector<uint8_t>>(r_res_var));
const auto& r_res_vec = std::get<std::vector<uint8_t>>(r_res_var);
assert(r_res_vec.size() == frame_size);
// assert equal
for (auto& e : r_res_vec) {
assert(e == uint8_t(rng_data() & 0xff));
}
}
{ // eof test
auto r_res_var = f_r_zstd.read(1);
if (std::holds_alternative<std::vector<uint8_t>>(r_res_var)) {
assert(std::get<std::vector<uint8_t>>(r_res_var).empty());
} else if (std::holds_alternative<ByteSpan>(r_res_var)) {
assert(std::get<ByteSpan>(r_res_var).empty());
} else {
assert(false);
}
}
}
// since we spam file, we immediatly remove them
std::filesystem::remove(test2_file_path);
}
}
const auto test3_file_path = temp_dir / "testfile3.zstd";
{ // large file test write
File2WFile f_w_file{test3_file_path.c_str(), true};
assert(f_w_file.isGood());
File2ZSTDW f_w_zstd{f_w_file};
assert(f_w_zstd.isGood());
assert(f_w_file.isGood());
std::minstd_rand rng{11*1337};
std::minstd_rand rng_data{11*1337}; // make investigating easier
size_t total_raw_size {0};
for (size_t i = 0; i < 2000; i++) {
const size_t frame_size = (rng() % ((2<<19) - 1)) + 1;
std::vector<uint8_t> tmp_data(frame_size);
for (auto& e : tmp_data) {
e = uint8_t(rng_data() & 0xff); // cutoff bad but good enough
}
bool res = f_w_zstd.write(ByteSpan{tmp_data});
assert(res);
assert(f_w_zstd.isGood());
assert(f_w_file.isGood());
total_raw_size += frame_size;
}
std::cout << "t3 total raw size: " << total_raw_size << "\n";
}
// after flush
std::cout << "t3 size on disk: " << std::filesystem::file_size(test3_file_path) << "\n";
{ // large file test read
File2RFile f_r_file{test3_file_path.c_str()};
assert(f_r_file.isGood());
File2ZSTDR f_r_zstd{f_r_file};
assert(f_r_zstd.isGood());
assert(f_r_file.isGood());
// using same rng state as write to compare
std::minstd_rand rng{11*1337};
std::minstd_rand rng_data{11*1337};
for (size_t i = 0; i < 2000; i++) {
const size_t frame_size = (rng() % ((2<<19) - 1)) + 1;
//std::cerr << "f: " << i << " fs: " << frame_size << "\n";
auto r_res_var = f_r_zstd.read(frame_size);
assert(std::holds_alternative<std::vector<uint8_t>>(r_res_var));
const auto& r_res_vec = std::get<std::vector<uint8_t>>(r_res_var);
assert(r_res_vec.size() == frame_size);
// assert equal
for (auto& e : r_res_vec) {
assert(e == uint8_t(rng_data() & 0xff));
}
}
{ // eof test
auto r_res_var = f_r_zstd.read(1);
if (std::holds_alternative<std::vector<uint8_t>>(r_res_var)) {
assert(std::get<std::vector<uint8_t>>(r_res_var).empty());
} else if (std::holds_alternative<ByteSpan>(r_res_var)) {
assert(std::get<ByteSpan>(r_res_var).empty());
} else {
assert(false);
}
}
}
// cleanup
std::filesystem::remove_all(temp_dir);
}