Green-Sky/tomato
Green-Sky/tomato
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move os and backend to sub

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Green Sky 2024-04-12 13:34:20 +02:00
parent 2597edd579
commit dfbb1dea68
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22 changed files with 28 additions and 1943 deletions
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3
.gitmodules vendored
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@ -20,3 +20,6 @@
[submodule "external/solanaceae_plugin"]
path = external/solanaceae_plugin
url = https://github.com/Green-Sky/solanaceae_plugin.git
[submodule "external/solanaceae_object_store"]
path = external/solanaceae_object_store
url = https://github.com/Green-Sky/solanaceae_object_store.git

24
external/CMakeLists.txt vendored
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@ -12,6 +12,8 @@ add_subdirectory(./toxcore)
add_subdirectory(./solanaceae_toxcore)
add_subdirectory(./solanaceae_tox)
add_subdirectory(./solanaceae_object_store)
add_subdirectory(./sdl)
add_subdirectory(./imgui)
@ -28,25 +30,3 @@ if (NOT TARGET nlohmann_json::nlohmann_json)
FetchContent_MakeAvailable(json)
endif()
if (NOT TARGET zstd::zstd)
# TODO: try find_package() first
# TODO: try pkg-config next (will work on most distros)
set(ZSTD_BUILD_STATIC ON)
set(ZSTD_BUILD_SHARED OFF)
set(ZSTD_BUILD_PROGRAMS OFF)
set(ZSTD_BUILD_CONTRIB OFF)
set(ZSTD_BUILD_TESTS OFF)
FetchContent_Declare(zstd
URL "https://github.com/facebook/zstd/releases/download/v1.5.5/zstd-1.5.5.tar.gz"
DOWNLOAD_EXTRACT_TIMESTAMP TRUE
SOURCE_SUBDIR build/cmake
EXCLUDE_FROM_ALL
)
FetchContent_MakeAvailable(zstd)
add_library(zstd INTERFACE) # somehow zstd fkd this up
target_include_directories(zstd INTERFACE ${zstd_SOURCE_DIR}/lib/)
target_link_libraries(zstd INTERFACE libzstd_static)
add_library(zstd::zstd ALIAS zstd)
endif()

1
external/solanaceae_object_store vendored Submodule

@ -0,0 +1 @@
Subproject commit 4d3ffb8192623740f6e170855ee1cffd428b78da

58
src/CMakeLists.txt
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@ -1,51 +1,14 @@
cmake_minimum_required(VERSION 3.9 FATAL_ERROR)
add_library(fragment_store
./fragment_store/file2_zstd.hpp
./fragment_store/file2_zstd.cpp
./fragment_store/uuid_generator.hpp
./fragment_store/uuid_generator.cpp
./fragment_store/types.hpp
./fragment_store/meta_components.hpp
./fragment_store/meta_components_id.inl
./fragment_store/file2_stack.hpp
./fragment_store/file2_stack.cpp
./fragment_store/serializer_json.hpp
./fragment_store/object_store.hpp
./fragment_store/object_store.cpp
./fragment_store/backends/filesystem_storage.hpp
./fragment_store/backends/filesystem_storage.cpp
./json/message_components.hpp # TODO: move
./json/tox_message_components.hpp # TODO: move
)
target_link_libraries(fragment_store PUBLIC
nlohmann_json::nlohmann_json
EnTT::EnTT
solanaceae_util
solanaceae_file2
zstd::zstd
solanaceae_tox_messages # TODO: move
)
########################################
add_executable(test_file_zstd
fragment_store/test_file_zstd.cpp
)
target_link_libraries(test_file_zstd PUBLIC
fragment_store
)
########################################
add_library(message_fragment_store
./fragment_store/uuid_generator.hpp
./fragment_store/uuid_generator.cpp
./json/message_components.hpp # TODO: move
./json/tox_message_components.hpp # TODO: move
./fragment_store/message_serializer.hpp
./fragment_store/message_serializer.cpp
./fragment_store/messages_meta_components.hpp
@ -60,8 +23,9 @@ add_library(message_fragment_store
)
target_compile_features(message_fragment_store PRIVATE cxx_std_20)
target_link_libraries(message_fragment_store PUBLIC
fragment_store
solanaceae_object_store
solanaceae_message3
solanaceae_tox_messages # TODO: move
)
########################################
@ -71,7 +35,8 @@ add_executable(convert_message_object_store
)
target_link_libraries(convert_message_object_store PUBLIC
fragment_store
solanaceae_object_store
solanaceae_object_store_backend_filesystem
message_fragment_store
)
@ -158,7 +123,8 @@ target_link_libraries(tomato PUBLIC
solanaceae_tox_contacts
solanaceae_tox_messages
fragment_store
solanaceae_object_store
solanaceae_object_store_backend_filesystem
message_fragment_store
SDL3::SDL3

627
src/fragment_store/backends/filesystem_storage.cpp
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@ -1,627 +0,0 @@
#include "./filesystem_storage.hpp"
#include "../meta_components.hpp"
#include "../serializer_json.hpp"
#include <solanaceae/util/utils.hpp>
#include <entt/container/dense_set.hpp>
#include <nlohmann/json.hpp>
#include <solanaceae/file/file2_std.hpp>
#include <solanaceae/file/file2_mem.hpp>
#include "../file2_stack.hpp"
#include <filesystem>
#include <iostream>
static const char* metaFileTypeSuffix(MetaFileType mft) {
switch (mft) {
case MetaFileType::TEXT_JSON: return ".json";
//case MetaFileType::BINARY_ARB: return ".bin";
case MetaFileType::BINARY_MSGPACK: return ".msgpack";
}
return ""; // .unk?
}
// TODO: move to ... somewhere. (span? file2i?)
static ByteSpan spanFromRead(const std::variant<ByteSpan, std::vector<uint8_t>>& data_var) {
if (std::holds_alternative<std::vector<uint8_t>>(data_var)) {
auto& vec = std::get<std::vector<uint8_t>>(data_var);
return {vec.data(), vec.size()};
} else if (std::holds_alternative<ByteSpan>(data_var)) {
return std::get<ByteSpan>(data_var);
} else {
assert(false);
return {};
}
}
namespace backend {
FilesystemStorage::FilesystemStorage(
ObjectStore2& os,
std::string_view storage_path,
MetaFileType mft_new
) : StorageBackendI::StorageBackendI(os), _storage_path(storage_path), _mft_new(mft_new) {
}
FilesystemStorage::~FilesystemStorage(void) {
}
ObjectHandle FilesystemStorage::newObject(ByteSpan id) {
{ // first check if id is already used (TODO: solve the multi obj/backend problem)
auto exising_oh = _os.getOneObjectByID(id);
if (static_cast<bool>(exising_oh)) {
return {};
}
}
std::filesystem::create_directories(_storage_path);
if (!std::filesystem::is_directory(_storage_path)) {
std::cerr << "FS error: failed to create storage path dir '" << _storage_path << "'\n";
return {};
}
const auto id_hex = bin2hex(id);
std::filesystem::path object_file_path;
// TODO: refactor this magic somehow
if (id_hex.size() < 6) {
object_file_path = std::filesystem::path{_storage_path}/id_hex;
} else {
// use the first 2hex (1byte) as a subfolder
std::filesystem::create_directories(std::string{_storage_path} + id_hex.substr(0, 2));
object_file_path = std::filesystem::path{std::string{_storage_path} + id_hex.substr(0, 2)} / id_hex.substr(2);
}
if (std::filesystem::exists(object_file_path)) {
std::cerr << "FS error: object already exists in path '" << id_hex << "'\n";
return {};
}
ObjectHandle oh{_os.registry(), _os.registry().create()};
oh.emplace<ObjComp::Ephemeral::Backend>(this);
oh.emplace<ObjComp::ID>(std::vector<uint8_t>{id});
oh.emplace<ObjComp::Ephemeral::FilePath>(object_file_path.generic_u8string());
oh.emplace<ObjComp::Ephemeral::MetaFileType>(_mft_new);
// meta needs to be synced to file
std::function<write_to_storage_fetch_data_cb> empty_data_cb = [](auto*, auto) -> uint64_t { return 0; };
if (!write(oh, empty_data_cb)) {
std::cerr << "FS error: write failed while creating new object file\n";
oh.destroy();
return {};
}
// while new metadata might be created here, making sure the file could be created is more important
_os.throwEventConstruct(oh);
return oh;
}
bool FilesystemStorage::write(Object o, std::function<write_to_storage_fetch_data_cb>& data_cb) {
auto& reg = _os.registry();
if (!reg.valid(o)) {
return false;
}
ObjectHandle oh {reg, o};
if (!oh.all_of<ObjComp::Ephemeral::FilePath>()) {
// not a file fragment?
return false;
}
// split object storage (meta and data are 2 files)
MetaFileType meta_type = MetaFileType::TEXT_JSON; // TODO: better defaults?
if (reg.all_of<ObjComp::Ephemeral::MetaFileType>(o)) {
meta_type = oh.get<ObjComp::Ephemeral::MetaFileType>().type;
}
Encryption meta_enc = Encryption::NONE; // TODO: better defaults?
Compression meta_comp = Compression::NONE; // TODO: better defaults?
if (meta_type != MetaFileType::TEXT_JSON) {
if (oh.all_of<ObjComp::Ephemeral::MetaEncryptionType>()) {
meta_enc = oh.get<ObjComp::Ephemeral::MetaEncryptionType>().enc;
}
if (oh.all_of<ObjComp::Ephemeral::MetaCompressionType>()) {
meta_comp = oh.get<ObjComp::Ephemeral::MetaCompressionType>().comp;
}
} else {
// we cant have encryption or compression
// so we force NONE for TEXT JSON
oh.emplace_or_replace<ObjComp::Ephemeral::MetaEncryptionType>(Encryption::NONE);
oh.emplace_or_replace<ObjComp::Ephemeral::MetaCompressionType>(Compression::NONE);
}
std::filesystem::path meta_tmp_path = oh.get<ObjComp::Ephemeral::FilePath>().path + ".meta" + metaFileTypeSuffix(meta_type) + ".tmp";
meta_tmp_path.replace_filename("." + meta_tmp_path.filename().generic_u8string());
// TODO: make meta comp work with mem compressor
//auto meta_file_stack = buildFileStackWrite(std::string_view{meta_tmp_path.generic_u8string()}, meta_enc, meta_comp);
std::stack<std::unique_ptr<File2I>> meta_file_stack;
meta_file_stack.push(std::make_unique<File2WFile>(std::string_view{meta_tmp_path.generic_u8string()}));
if (meta_file_stack.empty()) {
std::cerr << "FS error: failed to create temporary meta file stack\n";
std::filesystem::remove(meta_tmp_path); // might have created an empty file
return false;
}
Encryption data_enc = Encryption::NONE; // TODO: better defaults
Compression data_comp = Compression::NONE; // TODO: better defaults
if (oh.all_of<ObjComp::DataEncryptionType>()) {
data_enc = oh.get<ObjComp::DataEncryptionType>().enc;
}
if (oh.all_of<ObjComp::DataCompressionType>()) {
data_comp = oh.get<ObjComp::DataCompressionType>().comp;
}
std::filesystem::path data_tmp_path = oh.get<ObjComp::Ephemeral::FilePath>().path + ".tmp";
data_tmp_path.replace_filename("." + data_tmp_path.filename().generic_u8string());
auto data_file_stack = buildFileStackWrite(std::string_view{data_tmp_path.generic_u8string()}, data_enc, data_comp);
if (data_file_stack.empty()) {
while (!meta_file_stack.empty()) { meta_file_stack.pop(); }
std::filesystem::remove(meta_tmp_path);
std::cerr << "FS error: failed to create temporary data file stack\n";
return false;
}
try { // TODO: properly sanitize strings, so this cant throw
// sharing code between binary msgpack and text json for now
nlohmann::json meta_data_j = nlohmann::json::object(); // metadata needs to be an object, null not allowed
// metadata file
auto& sjc = _os.registry().ctx().get<SerializerJsonCallbacks<Object>>();
// TODO: refactor extract to OS
for (const auto& [type_id, storage] : reg.storage()) {
if (!storage.contains(o)) {
continue;
}
//std::cout << "storage type: type_id:" << type_id << " name:" << storage.type().name() << "\n";
// use type_id to find serializer
auto s_cb_it = sjc._serl.find(type_id);
if (s_cb_it == sjc._serl.end()) {
// could not find serializer, not saving
continue;
}
// noooo, why cant numbers be keys
//if (meta_type == MetaFileType::BINARY_MSGPACK) { // msgpack uses the hash id instead
//s_cb_it->second(storage.value(fid), meta_data[storage.type().hash()]);
//} else if (meta_type == MetaFileType::TEXT_JSON) {
s_cb_it->second(oh, meta_data_j[storage.type().name()]);
//}
}
if (meta_type == MetaFileType::BINARY_MSGPACK) { // binary metadata file
std::vector<uint8_t> binary_meta_data;
{
std::stack<std::unique_ptr<File2I>> binary_writer_stack;
binary_writer_stack.push(std::make_unique<File2MemW>(binary_meta_data));
if (!buildStackWrite(binary_writer_stack, meta_enc, meta_comp)) {
while (!meta_file_stack.empty()) { meta_file_stack.pop(); }
std::filesystem::remove(meta_tmp_path);
while (!data_file_stack.empty()) { data_file_stack.pop(); }
std::filesystem::remove(data_tmp_path);
std::cerr << "FS error: binary writer creation failed '" << oh.get<ObjComp::Ephemeral::FilePath>().path << "'\n";
return false;
}
{
const std::vector<uint8_t> meta_data = nlohmann::json::to_msgpack(meta_data_j);
if (!binary_writer_stack.top()->write(ByteSpan{meta_data})) {
// i feel like exceptions or refactoring would be nice here
while (!meta_file_stack.empty()) { meta_file_stack.pop(); }
std::filesystem::remove(meta_tmp_path);
while (!data_file_stack.empty()) { data_file_stack.pop(); }
std::filesystem::remove(data_tmp_path);
std::cerr << "FS error: binary writer failed '" << oh.get<ObjComp::Ephemeral::FilePath>().path << "'\n";
return false;
}
}
}
//// the meta file is itself msgpack data
nlohmann::json meta_header_j = nlohmann::json::array();
meta_header_j.emplace_back() = "SOLMET";
meta_header_j.push_back(meta_enc);
meta_header_j.push_back(meta_comp);
// with a custom msgpack impl like cmp, we can be smarter here and dont need an extra buffer
meta_header_j.push_back(nlohmann::json::binary(binary_meta_data));
const auto meta_header_data = nlohmann::json::to_msgpack(meta_header_j);
meta_file_stack.top()->write({meta_header_data.data(), meta_header_data.size()});
} else if (meta_type == MetaFileType::TEXT_JSON) {
// cant be compressed or encrypted
const auto meta_file_json_str = meta_data_j.dump(2, ' ', true);
meta_file_stack.top()->write({reinterpret_cast<const uint8_t*>(meta_file_json_str.data()), meta_file_json_str.size()});
}
} catch (...) {
while (!meta_file_stack.empty()) { meta_file_stack.pop(); } // destroy stack // TODO: maybe work with scope?
std::filesystem::remove(meta_tmp_path);
while (!data_file_stack.empty()) { data_file_stack.pop(); } // destroy stack // TODO: maybe work with scope?
std::filesystem::remove(data_tmp_path);
std::cerr << "FS error: failed to serialize json data\n";
return false;
}
// now data
// for zstd compression, chunk size is frame size. (no cross frame referencing)
// TODO: add buffering steam layer
static constexpr int64_t chunk_size{1024*1024}; // 1MiB should be enough
std::vector<uint8_t> buffer(chunk_size);
uint64_t buffer_actual_size {0};
do {
buffer_actual_size = data_cb(buffer.data(), buffer.size());
if (buffer_actual_size == 0) {
break;
}
if (buffer_actual_size > buffer.size()) {
// wtf
break;
}
data_file_stack.top()->write({buffer.data(), buffer_actual_size});
} while (buffer_actual_size == buffer.size());
// flush // TODO: use scope
while (!meta_file_stack.empty()) { meta_file_stack.pop(); } // destroy stack // TODO: maybe work with scope?
while (!data_file_stack.empty()) { data_file_stack.pop(); } // destroy stack // TODO: maybe work with scope?
std::filesystem::rename(
meta_tmp_path,
oh.get<ObjComp::Ephemeral::FilePath>().path + ".meta" + metaFileTypeSuffix(meta_type)
);
std::filesystem::rename(
data_tmp_path,
oh.get<ObjComp::Ephemeral::FilePath>().path
);
// TODO: check return value of renames
if (oh.all_of<ObjComp::Ephemeral::DirtyTag>()) {
oh.remove<ObjComp::Ephemeral::DirtyTag>();
}
return true;
}
bool FilesystemStorage::read(Object o, std::function<read_from_storage_put_data_cb>& data_cb) {
auto& reg = _os.registry();
if (!reg.valid(o)) {
return false;
}
ObjectHandle oh {reg, o};
if (!oh.all_of<ObjComp::Ephemeral::FilePath>()) {
// not a file
return false;
}
const auto& obj_path = oh.get<ObjComp::Ephemeral::FilePath>().path;
// TODO: check if metadata dirty?
// TODO: what if file changed on disk?
std::cout << "FS: loading fragment '" << obj_path << "'\n";
Compression data_comp = Compression::NONE;
if (oh.all_of<ObjComp::DataCompressionType>()) {
data_comp = oh.get<ObjComp::DataCompressionType>().comp;
}
auto data_file_stack = buildFileStackRead(std::string_view{obj_path}, Encryption::NONE, data_comp);
if (data_file_stack.empty()) {
return false;
}
// TODO: make it read in a single chunk instead?
static constexpr int64_t chunk_size {1024 * 1024}; // 1MiB should be good for read
do {
auto data_var = data_file_stack.top()->read(chunk_size);
ByteSpan data = spanFromRead(data_var);
if (data.empty()) {
// error or probably eof
break;
}
data_cb(data);
if (data.size < chunk_size) {
// eof
break;
}
} while (data_file_stack.top()->isGood());
return true;
}
void FilesystemStorage::scanAsync(void) {
scanPathAsync(_storage_path);
}
size_t FilesystemStorage::scanPath(std::string_view path) {
// TODO: extract so async can work (or/and make iteratable generator)
if (path.empty() || !std::filesystem::is_directory(path)) {
std::cerr << "FS error: scan path not a directory '" << path << "'\n";
return 0;
}
// step 1: make snapshot of files, validate metafiles and save id/path+meta.ext
// can be extra thread (if non vfs)
struct ObjFileEntry {
std::string id_str;
std::filesystem::path obj_path;
std::string meta_ext;
bool operator==(const ObjFileEntry& other) const {
// only compare by id
return id_str == other.id_str;
}
};
struct ObjFileEntryHash {
size_t operator()(const ObjFileEntry& it) const {
return entt::hashed_string(it.id_str.data(), it.id_str.size());
}
};
entt::dense_set<ObjFileEntry, ObjFileEntryHash> file_obj_list;
std::filesystem::path storage_path{path};
auto handle_file = [&](const std::filesystem::path& file_path) {
if (!std::filesystem::is_regular_file(file_path)) {
return;
}
// handle file
if (file_path.has_extension()) {
// skip over metadata, assuming only metafiles have extentions (might be wrong?)
// also skips temps
return;
}
auto relative_path = std::filesystem::proximate(file_path, storage_path);
std::string id_str = relative_path.generic_u8string();
// delete all '/'
id_str.erase(std::remove(id_str.begin(), id_str.end(), '/'), id_str.end());
if (id_str.size() % 2 != 0) {
std::cerr << "FS error: non hex object uid detected: '" << id_str << "'\n";
}
if (file_obj_list.contains(ObjFileEntry{id_str, {}, ""})) {
std::cerr << "FS error: object duplicate detected: '" << id_str << "'\n";
return; // skip
}
const char* meta_ext = ".meta.msgpack";
{ // find meta
// TODO: this as to know all possible extentions
bool has_meta_msgpack = std::filesystem::is_regular_file(file_path.generic_u8string() + ".meta.msgpack");
bool has_meta_json = std::filesystem::is_regular_file(file_path.generic_u8string() + ".meta.json");
const size_t meta_sum =
(has_meta_msgpack?1:0) +
(has_meta_json?1:0)
;
if (meta_sum > 1) { // has multiple
std::cerr << "FS error: object with multiple meta files detected: " << id_str << "\n";
return; // skip
}
if (meta_sum == 0) {
std::cerr << "FS error: object missing meta file detected: " << id_str << "\n";
return; // skip
}
if (has_meta_json) {
meta_ext = ".meta.json";
}
}
file_obj_list.emplace(ObjFileEntry{
std::move(id_str),
file_path,
meta_ext
});
};
for (const auto& outer_path : std::filesystem::directory_iterator(storage_path)) {
if (std::filesystem::is_regular_file(outer_path)) {
handle_file(outer_path);
} else if (std::filesystem::is_directory(outer_path)) {
// subdir, part of id
for (const auto& inner_path : std::filesystem::directory_iterator(outer_path)) {
//if (std::filesystem::is_regular_file(inner_path)) {
//// handle file
//} // TODO: support deeper recursion?
handle_file(inner_path);
}
}
}
std::cout << "FS: scan found:\n";
for (const auto& it : file_obj_list) {
std::cout << " " << it.id_str << "\n";
}
// step 2: check if files preexist in reg
// main thread
// (merge into step 3 and do more error checking?)
// TODO: properly handle duplicates, dups form different backends might be legit
// important
for (auto it = file_obj_list.begin(); it != file_obj_list.end();) {
auto id = hex2bin(it->id_str);
auto oh = _os.getOneObjectByID(ByteSpan{id});
if (static_cast<bool>(oh)) {
// pre exising (handle differently??)
// check if store differs?
it = file_obj_list.erase(it);
} else {
it++;
}
}
auto& sjc = _os.registry().ctx().get<SerializerJsonCallbacks<Object>>();
std::vector<Object> scanned_objs;
// step 3: parse meta and insert into reg of non preexising
// main thread
// TODO: check timestamps of preexisting and reload? mark external/remote dirty?
for (const auto& it : file_obj_list) {
MetaFileType mft {MetaFileType::TEXT_JSON};
Encryption meta_enc {Encryption::NONE};
Compression meta_comp {Compression::NONE};
nlohmann::json j;
if (it.meta_ext == ".meta.msgpack") {
std::ifstream file(it.obj_path.generic_u8string() + it.meta_ext, std::ios::in | std::ios::binary);
if (!file.is_open()) {
std::cout << "FS error: failed opening meta " << it.obj_path << "\n";
continue;
}
mft = MetaFileType::BINARY_MSGPACK;
// file is a msgpack within a msgpack
std::vector<uint8_t> full_meta_data;
{ // read meta file
// figure out size
file.seekg(0, file.end);
uint64_t file_size = file.tellg();
file.seekg(0, file.beg);
full_meta_data.resize(file_size);
file.read(reinterpret_cast<char*>(full_meta_data.data()), full_meta_data.size());
}
const auto meta_header_j = nlohmann::json::from_msgpack(full_meta_data, true, false);
if (!meta_header_j.is_array() || meta_header_j.size() < 4) {
std::cerr << "FS error: broken binary meta " << it.obj_path << "\n";
continue;
}
if (meta_header_j.at(0) != "SOLMET") {
std::cerr << "FS error: wrong magic '" << meta_header_j.at(0) << "' in meta " << it.obj_path << "\n";
continue;
}
meta_enc = meta_header_j.at(1);
if (meta_enc != Encryption::NONE) {
std::cerr << "FS error: unknown encryption " << it.obj_path << "\n";
continue;
}
meta_comp = meta_header_j.at(2);
if (meta_comp != Compression::NONE && meta_comp != Compression::ZSTD) {
std::cerr << "FS error: unknown compression " << it.obj_path << "\n";
continue;
}
//const auto& meta_data_ref = meta_header_j.at(3).is_binary()?meta_header_j.at(3):meta_header_j.at(3).at("data");
if (!meta_header_j.at(3).is_binary()) {
std::cerr << "FS error: meta data not binary " << it.obj_path << "\n";
continue;
}
const nlohmann::json::binary_t& meta_data_ref = meta_header_j.at(3);
std::stack<std::unique_ptr<File2I>> binary_reader_stack;
binary_reader_stack.push(std::make_unique<File2MemR>(ByteSpan{meta_data_ref.data(), meta_data_ref.size()}));
if (!buildStackRead(binary_reader_stack, meta_enc, meta_comp)) {
std::cerr << "FS error: binary reader creation failed " << it.obj_path << "\n";
continue;
}
// HACK: read fixed amout of data, but this way if we have neither enc nor comp we pass the span through
auto binary_read_value = binary_reader_stack.top()->read(10*1024*1024); // is 10MiB large enough for meta?
const auto binary_read_span = spanFromRead(binary_read_value);
assert(binary_read_span.size < 10*1024*1024);
j = nlohmann::json::from_msgpack(binary_read_span, true, false);
} else if (it.meta_ext == ".meta.json") {
std::ifstream file(it.obj_path.generic_u8string() + it.meta_ext, std::ios::in | std::ios::binary);
if (!file.is_open()) {
std::cerr << "FS error: failed opening meta " << it.obj_path << "\n";
continue;
}
mft = MetaFileType::TEXT_JSON;
file >> j;
} else {
assert(false);
}
if (!j.is_object()) {
std::cerr << "FS error: json in meta is broken " << it.id_str << "\n";
continue;
}
// TODO: existing fragment file
//newFragmentFile();
ObjectHandle oh{_os.registry(), _os.registry().create()};
oh.emplace<ObjComp::Ephemeral::Backend>(this);
oh.emplace<ObjComp::ID>(hex2bin(it.id_str));
oh.emplace<ObjComp::Ephemeral::MetaFileType>(mft);
oh.emplace<ObjComp::Ephemeral::MetaEncryptionType>(meta_enc);
oh.emplace<ObjComp::Ephemeral::MetaCompressionType>(meta_comp);
oh.emplace<ObjComp::Ephemeral::FilePath>(it.obj_path.generic_u8string());
for (const auto& [k, v] : j.items()) {
// type id from string hash
const auto type_id = entt::hashed_string(k.data(), k.size());
const auto deserl_fn_it = sjc._deserl.find(type_id);
if (deserl_fn_it != sjc._deserl.cend()) {
// TODO: check return value
deserl_fn_it->second(oh, v);
} else {
std::cerr << "FS warning: missing deserializer for meta key '" << k << "'\n";
}
}
scanned_objs.push_back(oh);
}
// TODO: mutex and move code to async and return this list ?
// throw new frag event here, after loading them all
for (const Object o : scanned_objs) {
_os.throwEventConstruct(o);
}
return scanned_objs.size();
}
void FilesystemStorage::scanPathAsync(std::string path) {
// add path to queue
// HACK: if path is known/any fragment is in the path, this operation blocks (non async)
scanPath(path); // TODO: make async and post result
}
} // backend

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#pragma once
#include "../types.hpp"
#include "../object_store.hpp"
#include <string>
namespace backend {
struct FilesystemStorage : public StorageBackendI {
FilesystemStorage(
ObjectStore2& os,
std::string_view storage_path = "test_obj_store",
MetaFileType mft_new = MetaFileType::BINARY_MSGPACK
);
~FilesystemStorage(void);
// TODO: fix the path for this specific fs?
// for now we assume a single storage path per backend (there can be multiple per type)
std::string _storage_path;
// meta file type for new objects
MetaFileType _mft_new {MetaFileType::BINARY_MSGPACK};
ObjectHandle newObject(ByteSpan id) override;
bool write(Object o, std::function<write_to_storage_fetch_data_cb>& data_cb) override;
bool read(Object o, std::function<read_from_storage_put_data_cb>& data_cb) override;
//// convenience function
//nlohmann::json loadFromStorageNJ(FragmentID fid);
void scanAsync(void);
private:
size_t scanPath(std::string_view path);
void scanPathAsync(std::string path);
};
} // backend

8
src/fragment_store/convert_frag_to_obj.cpp
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@ -1,7 +1,7 @@
#include "./object_store.hpp"
#include "./backends/filesystem_storage.hpp"
#include "./meta_components.hpp"
#include "./serializer_json.hpp"
#include <solanaceae/object_store/object_store.hpp>
#include <solanaceae/object_store/backends/filesystem_storage.hpp>
#include <solanaceae/object_store/meta_components.hpp>
#include <solanaceae/object_store/serializer_json.hpp>
#include "./message_fragment_store.hpp"
#include <solanaceae/util/utils.hpp>

93
src/fragment_store/file2_stack.cpp
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#include "./file2_stack.hpp"
#include <solanaceae/file/file2_std.hpp>
#include "./file2_zstd.hpp"
#include <cassert>
#include <iostream>
// add enc and comp file layers
// assumes a file is already in the stack
bool buildStackRead(std::stack<std::unique_ptr<File2I>>& file_stack, Encryption encryption, Compression compression) {
assert(!file_stack.empty());
// TODO: decrypt here
assert(encryption == Encryption::NONE);
// add layer based on enum
if (compression == Compression::ZSTD) {
file_stack.push(std::make_unique<File2ZSTDR>(*file_stack.top().get()));
} else {
// TODO: make error instead
assert(compression == Compression::NONE);
}
if (!file_stack.top()->isGood()) {
std::cerr << "FS error: file failed to add " << (int)compression << " decompression layer\n";
return false;
}
return true;
}
// do i need this?
std::stack<std::unique_ptr<File2I>> buildFileStackRead(std::string_view file_path, Encryption encryption, Compression compression) {
std::stack<std::unique_ptr<File2I>> file_stack;
file_stack.push(std::make_unique<File2RFile>(file_path));
if (!file_stack.top()->isGood()) {
std::cerr << "FS error: opening file for reading '" << file_path << "'\n";
return {};
}
if (!buildStackRead(file_stack, encryption, compression)) {
std::cerr << "FS error: file failed to add layers for '" << file_path << "'\n";
return {};
}
return file_stack;
}
// add enc and comp file layers
// assumes a file is already in the stack
bool buildStackWrite(std::stack<std::unique_ptr<File2I>>& file_stack, Encryption encryption, Compression compression) {
assert(!file_stack.empty());
// TODO: encrypt here
assert(encryption == Encryption::NONE);
// add layer based on enum
if (compression == Compression::ZSTD) {
file_stack.push(std::make_unique<File2ZSTDW>(*file_stack.top().get()));
} else {
// TODO: make error instead
assert(compression == Compression::NONE);
}
if (!file_stack.top()->isGood()) {
std::cerr << "FS error: file failed to add " << (int)compression << " compression layer\n";
return false;
}
return true;
}
// do i need this?
std::stack<std::unique_ptr<File2I>> buildFileStackWrite(std::string_view file_path, Encryption encryption, Compression compression) {
std::stack<std::unique_ptr<File2I>> file_stack;
file_stack.push(std::make_unique<File2WFile>(file_path));
if (!file_stack.top()->isGood()) {
std::cerr << "FS error: opening file for writing '" << file_path << "'\n";
return {};
}
if (!buildStackWrite(file_stack, encryption, compression)) {
std::cerr << "FS error: file failed to add layers for '" << file_path << "'\n";
return {};
}
return file_stack;
}

23
src/fragment_store/file2_stack.hpp
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#pragma once
#include "./types.hpp"
#include <solanaceae/file/file2.hpp>
#include <stack>
#include <memory>
#include <string_view>
// add enc and comp file layers
// assumes a file is already in the stack
[[nodiscard]] bool buildStackRead(std::stack<std::unique_ptr<File2I>>& file_stack, Encryption encryption, Compression compression);
// do i need this?
[[nodiscard]] std::stack<std::unique_ptr<File2I>> buildFileStackRead(std::string_view file_path, Encryption encryption, Compression compression);
// add enc and comp file layers
// assumes a file is already in the stack
[[nodiscard]] bool buildStackWrite(std::stack<std::unique_ptr<File2I>>& file_stack, Encryption encryption, Compression compression);
// do i need this?
[[nodiscard]] std::stack<std::unique_ptr<File2I>> buildFileStackWrite(std::string_view file_path, Encryption encryption, Compression compression);

209
src/fragment_store/file2_zstd.cpp
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@ -1,209 +0,0 @@
#include "./file2_zstd.hpp"
#include <cstdint>
#include <iostream>
#include <variant>
#include <vector>
#include <cassert>
File2ZSTDW::File2ZSTDW(File2I& real) :
File2I(true, false),
_real_file(real)
{
ZSTD_CCtx_setParameter(_cctx.get(), ZSTD_c_compressionLevel, 0); // default (3)
ZSTD_CCtx_setParameter(_cctx.get(), ZSTD_c_checksumFlag, 1); // add extra checksums (to frames?)
}
File2ZSTDW::~File2ZSTDW(void) {
// flush remaining data (and maybe header)
// actually nvm, write will always flush all data, so only on empty files this would be an issue
}
bool File2ZSTDW::isGood(void) {
return _real_file.isGood();
}
bool File2ZSTDW::write(const ByteSpan data, int64_t pos) {
if (pos != -1) {
return false;
}
if (data.empty()) {
return false; // return true?
}
if (data.size < 16) {
std::cout << "F2ZSTD warning: each write is a zstd frame and compression suffers significantly for small frames.\n";
}
std::vector<uint8_t> compressed_buffer(ZSTD_CStreamOutSize());
ZSTD_inBuffer input = { data.ptr, data.size, 0 };
size_t remaining_ret {0};
do {
// remaining data in input < compressed_buffer size (heuristic)
bool const lastChunk = (input.size - input.pos) <= compressed_buffer.size();
ZSTD_EndDirective const mode = lastChunk ? ZSTD_e_end : ZSTD_e_continue;
ZSTD_outBuffer output = { compressed_buffer.data(), compressed_buffer.size(), 0 };
remaining_ret = ZSTD_compressStream2(_cctx.get(), &output , &input, mode);
if (ZSTD_isError(remaining_ret)) {
std::cerr << "F2WRZSTD error: compressing data failed\n";
break;
}
_real_file.write(ByteSpan{compressed_buffer.data(), output.pos});
} while ((input.pos < input.size || remaining_ret != 0) && _real_file.isGood());
return _real_file.isGood();
}
std::variant<ByteSpan, std::vector<uint8_t>> File2ZSTDW::read(uint64_t, int64_t) {
return {};
}
// ######################################### decompression
File2ZSTDR::File2ZSTDR(File2I& real) :
File2I(false, true),
_real_file(real),
// 64kib
_in_buffer(ZSTD_DStreamInSize()),
_out_buffer(ZSTD_DStreamOutSize())
{
}
bool File2ZSTDR::isGood(void) {
return _real_file.isGood();
}
bool File2ZSTDR::write(const ByteSpan, int64_t) {
return false;
}
std::variant<ByteSpan, std::vector<uint8_t>> File2ZSTDR::read(uint64_t size, int64_t pos) {
if (pos != -1) {
// error, only support streaming (for now)
return {};
}
std::vector<uint8_t> ret_data;
// actually first we check previous data
if (!_decompressed_buffer.empty()) {
uint64_t required_size = std::min<uint64_t>(size, _decompressed_buffer.size());
ret_data.insert(ret_data.end(), _decompressed_buffer.cbegin(), _decompressed_buffer.cbegin() + required_size);
_decompressed_buffer.erase(_decompressed_buffer.cbegin(), _decompressed_buffer.cbegin() + required_size);
}
bool eof {false};
// outerloop here
while (ret_data.size() < size && !eof) {
// first make sure we have data in input
if (_z_input.src == nullptr || _z_input.pos == _z_input.size) {
const auto request_size = _in_buffer.size();
if (!feedInput(_real_file.read(request_size, -1))) {
return ret_data;
}
// if _z_input.size < _in_buffer.size() -> assume eof?
if (_z_input.size < request_size) {
eof = true;
//std::cout << "---- eof\n";
}
}
do {
ZSTD_outBuffer output = { _out_buffer.data(), _out_buffer.size(), 0 };
size_t const ret = ZSTD_decompressStream(_dctx.get(), &output , &_z_input);
if (ZSTD_isError(ret)) {
// error <.<
std::cerr << "---- error: decompression error\n";
return ret_data;
}
// 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;
}
int64_t returning_size = std::min<int64_t>(int64_t(size) - int64_t(ret_data.size()), output.pos);
assert(returning_size >= 0);
if (returning_size > 0) {
ret_data.insert(
ret_data.end(),
reinterpret_cast<const uint8_t*>(output.dst),
reinterpret_cast<const uint8_t*>(output.dst) + returning_size
);
}
// make sure we keep excess decompressed data
if (returning_size < int64_t(output.pos)) {
//const auto remaining_size = output.pos - returning_size;
_decompressed_buffer.insert(
_decompressed_buffer.cend(),
reinterpret_cast<const uint8_t*>(output.dst) + returning_size,
reinterpret_cast<const uint8_t*>(output.dst) + output.pos
);
}
} while (_z_input.pos < _z_input.size);
}
return ret_data;
}
bool File2ZSTDR::feedInput(std::variant<ByteSpan, std::vector<uint8_t>>&& read_buff) {
// 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);
if (span.size > _in_buffer.size()) {
// error, how did we read more than we asked for??
return {};
}
if (span.empty()) {
_z_input = { _in_buffer.data(), 0, 0 };
} else {
// cpy
_in_buffer = static_cast<std::vector<uint8_t>>(span);
_z_input = {
_in_buffer.data(),
span.size,
0
};
}
} else if (std::holds_alternative<std::vector<uint8_t>>(read_buff)) {
auto& vec = std::get<std::vector<uint8_t>>(read_buff);
if (vec.size() > _in_buffer.size()) {
// error, how did we read more than we asked for??
return {};
}
// cpy
_in_buffer = vec;
_z_input = {
_in_buffer.data(),
_in_buffer.size(),
0
};
} else {
// error, unsupported return value of read??
return false;
}
return true;
}

51
src/fragment_store/file2_zstd.hpp
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#pragma once
#include <solanaceae/file/file2.hpp>
#include <memory>
#include <zstd.h>
// zstd compression wrapper over another file
// WARNING: only supports sequential writes
struct File2ZSTDW : public File2I {
File2I& _real_file;
// TODO: hide this detail?
std::unique_ptr<ZSTD_CCtx, decltype(&ZSTD_freeCCtx)> _cctx{ZSTD_createCCtx(), &ZSTD_freeCCtx};
File2ZSTDW(File2I& real);
virtual ~File2ZSTDW(void);
bool isGood(void) override;
// for simplicity and potential future seekability each write is its own frame
bool write(const ByteSpan data, int64_t pos = -1) override;
std::variant<ByteSpan, std::vector<uint8_t>> read(uint64_t size, int64_t pos = -1) override;
};
// zstd decompression wrapper over another file
// WARNING: only supports sequential reads
// TODO: add seeking support (use frames)
struct File2ZSTDR : public File2I {
File2I& _real_file;
// TODO: hide this detail?
std::unique_ptr<ZSTD_DCtx, decltype(&ZSTD_freeDCtx)> _dctx{ZSTD_createDCtx(), &ZSTD_freeDCtx};
std::vector<uint8_t> _in_buffer;
std::vector<uint8_t> _out_buffer;
std::vector<uint8_t> _decompressed_buffer; // retains decompressed unread data between read() calls
ZSTD_inBuffer _z_input{nullptr, 0, 0};
File2ZSTDR(File2I& real);
virtual ~File2ZSTDR(void) {}
bool isGood(void) override;
bool write(const ByteSpan data, int64_t pos = -1) override;
std::variant<ByteSpan, std::vector<uint8_t>> read(uint64_t size, int64_t pos = -1) override;
private:
bool feedInput(std::variant<ByteSpan, std::vector<uint8_t>>&& read_buff);
};

2
src/fragment_store/message_fragment_store.cpp
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@ -1,6 +1,6 @@
#include "./message_fragment_store.hpp"
#include "./serializer_json.hpp"
#include <solanaceae/object_store/serializer_json.hpp>
#include "../json/message_components.hpp"

4
src/fragment_store/message_fragment_store.hpp
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@ -1,7 +1,7 @@
#pragma once
#include "./meta_components.hpp"
#include "./object_store.hpp"
#include <solanaceae/object_store/object_store.hpp>
#include <solanaceae/object_store/meta_components.hpp>
#include "./uuid_generator.hpp"

2
src/fragment_store/messages_meta_components.hpp
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@ -1,6 +1,6 @@
#pragma once
#include "./meta_components.hpp"
#include <solanaceae/object_store/meta_components.hpp>
namespace ObjectStore::Components {
struct MessagesVersion {

77
src/fragment_store/meta_components.hpp
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#pragma once
#include "./types.hpp"
#include "./object_store.hpp"
#include <vector>
#include <string>
#include <cstdint>
namespace ObjectStore::Components {
// TODO: is this special and should this be saved to meta or not (its already in the file name on disk)
struct ID {
std::vector<uint8_t> v;
};
struct DataEncryptionType {
Encryption enc {Encryption::NONE};
};
struct DataCompressionType {
Compression comp {Compression::NONE};
};
// meta that is not written to (meta-)file
namespace Ephemeral {
// TODO: move, backend specific
struct MetaFileType {
::MetaFileType type {::MetaFileType::TEXT_JSON};
};
struct MetaEncryptionType {
Encryption enc {Encryption::NONE};
};
struct MetaCompressionType {
Compression comp {Compression::NONE};
};
struct Backend {
// TODO: shared_ptr instead??
StorageBackendI* ptr;
};
// excluded from file meta
// TODO: move to backend specific
struct FilePath {
// contains store path, if any
std::string path;
};
// TODO: seperate into remote and local?
// (remote meaning eg. the file on disk was changed by another program)
struct DirtyTag {};
} // Ephemeral
} // Components
// shortened to save bytes (until I find a way to save by ID in msgpack)
namespace ObjComp = ObjectStore::Components;
// old names from frag era
namespace Fragment::Components {
//struct ID {};
//struct DataEncryptionType {};
//struct DataCompressionType {};
struct ID : public ObjComp::ID {};
struct DataEncryptionType : public ObjComp::DataEncryptionType {};
struct DataCompressionType : public ObjComp::DataCompressionType {};
}
namespace FragComp = Fragment::Components;
#include "./meta_components_id.inl"

30
src/fragment_store/meta_components_id.inl
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@ -1,30 +0,0 @@
#pragma once
#include "./meta_components.hpp"
#include <entt/core/type_info.hpp>
// TODO: move more central
#define DEFINE_COMP_ID(x) \
template<> \
constexpr entt::id_type entt::type_hash<x>::value() noexcept { \
using namespace entt::literals; \
return #x##_hs; \
} \
template<> \
constexpr std::string_view entt::type_name<x>::value() noexcept { \
return #x; \
}
// cross compiler stable ids
DEFINE_COMP_ID(ObjComp::DataEncryptionType)
DEFINE_COMP_ID(ObjComp::DataCompressionType)
// old stuff
DEFINE_COMP_ID(FragComp::DataEncryptionType)
DEFINE_COMP_ID(FragComp::DataCompressionType)
#undef DEFINE_COMP_ID

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src/fragment_store/object_store.cpp
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#include "./object_store.hpp"
#include "./meta_components.hpp"
#include "./serializer_json.hpp"
#include <nlohmann/json.hpp> // this sucks
#include <iostream>
// TODO: move somewhere else
static bool serl_json_data_enc_type(const ObjectHandle oh, nlohmann::json& out) {
if (!oh.all_of<ObjComp::DataEncryptionType>()) {
return false;
}
out = static_cast<std::underlying_type_t<Encryption>>(
oh.get<ObjComp::DataEncryptionType>().enc
);
return true;
}
static bool deserl_json_data_enc_type(ObjectHandle oh, const nlohmann::json& in) {
oh.emplace_or_replace<ObjComp::DataEncryptionType>(
static_cast<Encryption>(
static_cast<std::underlying_type_t<Encryption>>(in)
)
);
return true;
}
static bool serl_json_data_comp_type(const ObjectHandle oh, nlohmann::json& out) {
if (!oh.all_of<ObjComp::DataCompressionType>()) {
return false;
}
out = static_cast<std::underlying_type_t<Compression>>(
oh.get<ObjComp::DataCompressionType>().comp
);
return true;
}
static bool deserl_json_data_comp_type(ObjectHandle oh, const nlohmann::json& in) {
oh.emplace_or_replace<ObjComp::DataCompressionType>(
static_cast<Compression>(
static_cast<std::underlying_type_t<Compression>>(in)
)
);
return true;
}
StorageBackendI::StorageBackendI(ObjectStore2& os) : _os(os) {
}
ObjectHandle StorageBackendI::newObject(ByteSpan) {
//return {_os.registry(), entt::null};
return {};
}
bool StorageBackendI::write(Object o, const ByteSpan data) {
std::function<write_to_storage_fetch_data_cb> fn_cb = [read = 0ull, data](uint8_t* request_buffer, uint64_t buffer_size) mutable -> uint64_t {
uint64_t i = 0;
for (; i+read < data.size && i < buffer_size; i++) {
request_buffer[i] = data[i+read];
}
read += i;
return i;
};
return write(o, fn_cb);
}
ObjectStore2::ObjectStore2(void) {
// HACK: set them up independently
auto& sjc = _reg.ctx().emplace<SerializerJsonCallbacks<Object>>();
sjc.registerSerializer<ObjComp::DataEncryptionType>(serl_json_data_enc_type);
sjc.registerDeSerializer<ObjComp::DataEncryptionType>(deserl_json_data_enc_type);
sjc.registerSerializer<ObjComp::DataCompressionType>(serl_json_data_comp_type);
sjc.registerDeSerializer<ObjComp::DataCompressionType>(deserl_json_data_comp_type);
// old stuff
sjc.registerSerializer<FragComp::DataEncryptionType>(serl_json_data_enc_type);
sjc.registerDeSerializer<FragComp::DataEncryptionType>(deserl_json_data_enc_type);
sjc.registerSerializer<FragComp::DataCompressionType>(serl_json_data_comp_type);
sjc.registerDeSerializer<FragComp::DataCompressionType>(deserl_json_data_comp_type);
}
ObjectStore2::~ObjectStore2(void) {
}
ObjectRegistry& ObjectStore2::registry(void) {
return _reg;
}
ObjectHandle ObjectStore2::objectHandle(const Object o) {
return {_reg, o};
}
ObjectHandle ObjectStore2::getOneObjectByID(const ByteSpan id) {
// TODO: accelerate
// maybe keep it sorted and binary search? hash table lookup?
for (const auto& [obj, id_comp] : _reg.view<ObjComp::ID>().each()) {
if (id == ByteSpan{id_comp.v}) {
return {_reg, obj};
}
}
return {_reg, entt::null};
}
void ObjectStore2::throwEventConstruct(const Object o) {
std::cout << "OS debug: event construct " << entt::to_integral(o) << "\n";
dispatch(
ObjectStore_Event::object_construct,
ObjectStore::Events::ObjectConstruct{
ObjectHandle{_reg, o}
}
);
}
void ObjectStore2::throwEventUpdate(const Object o) {
std::cout << "OS debug: event update " << entt::to_integral(o) << "\n";
dispatch(
ObjectStore_Event::object_update,
ObjectStore::Events::ObjectUpdate{
ObjectHandle{_reg, o}
}
);
}
void ObjectStore2::throwEventDestroy(const Object o) {
std::cout << "OS debug: event destroy " << entt::to_integral(o) << "\n";
dispatch(
ObjectStore_Event::object_destroy,
ObjectStore::Events::ObjectUpdate{
ObjectHandle{_reg, o}
}
);
}

95
src/fragment_store/object_store.hpp
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#pragma once
#include <solanaceae/util/event_provider.hpp>
#include <solanaceae/util/span.hpp>
#include <entt/entity/registry.hpp>
#include <entt/entity/handle.hpp>
#include <cstdint>
// internal id
enum class Object : uint32_t {};
using ObjectRegistry = entt::basic_registry<Object>;
using ObjectHandle = entt::basic_handle<ObjectRegistry>;
// fwd
struct ObjectStore2;
struct StorageBackendI {
// OR or OS ?
ObjectStore2& _os;
StorageBackendI(ObjectStore2& os);
// default impl fails, acting like a read only store
virtual ObjectHandle newObject(ByteSpan id);
// ========== write object to storage ==========
using write_to_storage_fetch_data_cb = uint64_t(uint8_t* request_buffer, uint64_t buffer_size);
// calls data_cb with a buffer to be filled in, cb returns actual count of data. if returned < max, its the last buffer.
virtual bool write(Object o, std::function<write_to_storage_fetch_data_cb>& data_cb) = 0;
bool write(Object o, const ByteSpan data);
// ========== read object from storage ==========
using read_from_storage_put_data_cb = void(const ByteSpan buffer);
virtual bool read(Object o, std::function<read_from_storage_put_data_cb>& data_cb) = 0;
};
namespace ObjectStore::Events {
struct ObjectConstruct {
const ObjectHandle e;
};
struct ObjectUpdate {
const ObjectHandle e;
};
struct ObjectDestory {
const ObjectHandle e;
};
} // ObjectStore::Events
enum class ObjectStore_Event : uint16_t {
object_construct,
object_update,
object_destroy,
MAX
};
struct ObjectStoreEventI {
using enumType = ObjectStore_Event;
virtual ~ObjectStoreEventI(void) {}
virtual bool onEvent(const ObjectStore::Events::ObjectConstruct&) { return false; }
virtual bool onEvent(const ObjectStore::Events::ObjectUpdate&) { return false; }
virtual bool onEvent(const ObjectStore::Events::ObjectDestory&) { return false; }
};
using ObjectStoreEventProviderI = EventProviderI<ObjectStoreEventI>;
struct ObjectStore2 : public ObjectStoreEventProviderI {
static constexpr const char* version {"2"};
ObjectRegistry _reg;
// TODO: default backend?
ObjectStore2(void);
virtual ~ObjectStore2(void);
ObjectRegistry& registry(void);
ObjectHandle objectHandle(const Object o);
// TODO: properly think about multiple objects witht he same id / different backends
ObjectHandle getOneObjectByID(const ByteSpan id);
// sync?
void throwEventConstruct(const Object o);
void throwEventUpdate(const Object o);
void throwEventDestroy(const Object o);
};

67
src/fragment_store/serializer_json.hpp
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#pragma once
#include <entt/core/type_info.hpp>
#include <entt/container/dense_map.hpp>
#include <entt/entity/handle.hpp>
#include <nlohmann/json_fwd.hpp>
// nlohmann
template<typename EntityType = entt::entity>
struct SerializerJsonCallbacks {
using Registry = entt::basic_registry<EntityType>;
using Handle = entt::basic_handle<Registry>;
using serialize_fn = bool(*)(const Handle h, nlohmann::json& out);
entt::dense_map<entt::id_type, serialize_fn> _serl;
using deserialize_fn = bool(*)(Handle h, const nlohmann::json& in);
entt::dense_map<entt::id_type, deserialize_fn> _deserl;
template<typename T>
static bool component_get_json(const Handle h, nlohmann::json& j) {
if (h.template all_of<T>()) {
if constexpr (!std::is_empty_v<T>) {
j = h.template get<T>();
}
return true;
}
return false;
}
template<typename T>
static bool component_emplace_or_replace_json(Handle h, const nlohmann::json& j) {
if constexpr (std::is_empty_v<T>) {
h.template emplace_or_replace<T>(); // assert empty json?
} else {
h.template emplace_or_replace<T>(static_cast<T>(j));
}
return true;
}
void registerSerializer(serialize_fn fn, const entt::type_info& type_info) {
_serl[type_info.hash()] = fn;
}
template<typename CompType>
void registerSerializer(
serialize_fn fn = component_get_json<CompType>,
const entt::type_info& type_info = entt::type_id<CompType>()
) {
registerSerializer(fn, type_info);
}
void registerDeSerializer(deserialize_fn fn, const entt::type_info& type_info) {
_deserl[type_info.hash()] = fn;
}
template<typename CompType>
void registerDeSerializer(
deserialize_fn fn = component_emplace_or_replace_json<CompType>,
const entt::type_info& type_info = entt::type_id<CompType>()
) {
registerDeSerializer(fn, type_info);
}
};

394
src/fragment_store/test_file_zstd.cpp
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#include "./file2_zstd.hpp"
#include <solanaceae/util/span.hpp>
#include <solanaceae/file/file2_mem.hpp>
#include <solanaceae/file/file2_std.hpp>
#include <filesystem>
#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"};
const static ByteSpan data_test_text1{
reinterpret_cast<const uint8_t*>(test_text1.data()),
test_text1.size()
};
const static std::string_view test_text2{"test2 1234 1234 :) 1234 5678 88888888\n"};
const static ByteSpan data_test_text2{
reinterpret_cast<const uint8_t*>(test_text2.data()),
test_text2.size()
};
const static std::string_view test_text3{
"00000000000000000000000000000000000000000000000000000 test 00000000000000000000000000000000000000\n"
"00000000000000000000000000000000000000000000000000000 test 00000000000000000000000000000000000000\n"
"00000000000000000000000000000000000000000000000000000 test 00000000000000000000000000000000000000\n"
"00000000000000000000000000000000000000000000000000000 test 00000000000000000000000000000000000000\n"
"00000000000000000000000000000000000000000000000000000 test 00000000000000000000000000000000000000\n"
"00000000000000000000000000000000000000000000000000000 test 00000000000000000000000000000000000000\n"
};
const static ByteSpan data_test_text3{
reinterpret_cast<const uint8_t*>(test_text3.data()),
test_text3.size()
};
int main(void) {
{ // first do a simple mem backed test
std::vector<uint8_t> buffer;
{ // write
File2MemW f_w_mem{buffer};
assert(f_w_mem.isGood());
File2ZSTDW f_w_zstd{f_w_mem};
assert(f_w_zstd.isGood());
bool res = f_w_zstd.write(data_test_text1);
assert(res);
assert(f_w_zstd.isGood());
// write another frame of the same data
res = f_w_zstd.write(data_test_text2);
assert(res);
assert(f_w_zstd.isGood());
// write larger frame
res = f_w_zstd.write(data_test_text3);
assert(res);
assert(f_w_zstd.isGood());
}
std::cout << "in mem size: " << buffer.size() << "\n";
{ // read
File2MemR f_r_mem{ByteSpan{buffer}};
assert(f_r_mem.isGood());
File2ZSTDR f_r_zstd{f_r_mem};
assert(f_r_zstd.isGood());
// reads return owning buffers
{ // readback data_test_text1
auto r_res_var = f_r_zstd.read(data_test_text1.size);
//assert(f_r_zstd.isGood());
//assert(f_r_file.isGood());
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);
//std::cout << "decomp: " << std::string_view{reinterpret_cast<const char*>(r_res_vec.data()), r_res_vec.size()};
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
auto r_res_var = f_r_zstd.read(data_test_text2.size);
//assert(f_r_zstd.isGood());
//assert(f_r_file.isGood());
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);
//std::cout << "decomp: " << std::string_view{reinterpret_cast<const char*>(r_res_vec.data()), r_res_vec.size()};
assert(r_res_vec.size() == data_test_text2.size);
assert(std::equal(
data_test_text2.cbegin(),
data_test_text2.cend(),
r_res_vec.cbegin()
));
}
{ // readback data_test_text3
auto r_res_var = f_r_zstd.read(data_test_text3.size);
//assert(f_r_zstd.isGood());
//assert(f_r_file.isGood());
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);
//std::cout << "decomp: " << std::string_view{reinterpret_cast<const char*>(r_res_vec.data()), r_res_vec.size()};
assert(r_res_vec.size() == data_test_text3.size);
assert(std::equal(
data_test_text3.cbegin(),
data_test_text3.cend(),
r_res_vec.cbegin()
));
}
{ // assert eof somehow
// since its eof, reading a single byte should return a zero sized buffer
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);
}
}
}
}
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));
std::cout << "test temp dir: " << temp_dir << "\n";
const auto test1_file_path = temp_dir / "testfile1.zstd";
{ // simple write test
File2WFile f_w_file{std::string_view{test1_file_path.u8string()}, true};
assert(f_w_file.isGood());
File2ZSTDW f_w_zstd{f_w_file};
assert(f_w_zstd.isGood());
assert(f_w_file.isGood());
//bool res = f_w_file.write(data_test_text1);
bool res = f_w_zstd.write(data_test_text1);
assert(res);
assert(f_w_zstd.isGood());
assert(f_w_file.isGood());
// write another frame of the same data
res = f_w_zstd.write(data_test_text2);
assert(res);
assert(f_w_zstd.isGood());
assert(f_w_file.isGood());
// write larger frame
res = f_w_zstd.write(data_test_text3);
assert(res);
assert(f_w_zstd.isGood());
assert(f_w_file.isGood());
}
// after flush
assert(std::filesystem::file_size(test1_file_path) != 0);
{ // simple read test (using write test created file)
File2RFile f_r_file{std::string_view{test1_file_path.u8string()}};
assert(f_r_file.isGood());
File2ZSTDR f_r_zstd{f_r_file};
assert(f_r_zstd.isGood());
assert(f_r_file.isGood());
// reads return owning buffers
{ // readback data_test_text1
auto r_res_var = f_r_zstd.read(data_test_text1.size);
//assert(f_r_zstd.isGood());
//assert(f_r_file.isGood());
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);
//std::cout << "decomp: " << std::string_view{reinterpret_cast<const char*>(r_res_vec.data()), r_res_vec.size()};
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
auto r_res_var = f_r_zstd.read(data_test_text2.size);
//assert(f_r_zstd.isGood());
//assert(f_r_file.isGood());
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);
//std::cout << "decomp: " << std::string_view{reinterpret_cast<const char*>(r_res_vec.data()), r_res_vec.size()};
assert(r_res_vec.size() == data_test_text2.size);
assert(std::equal(
data_test_text2.cbegin(),
data_test_text2.cend(),
r_res_vec.cbegin()
));
}
{ // readback data_test_text3
auto r_res_var = f_r_zstd.read(data_test_text3.size);
//assert(f_r_zstd.isGood());
//assert(f_r_file.isGood());
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);
//std::cout << "decomp: " << std::string_view{reinterpret_cast<const char*>(r_res_vec.data()), r_res_vec.size()};
assert(r_res_vec.size() == data_test_text3.size);
assert(std::equal(
data_test_text3.cbegin(),
data_test_text3.cend(),
r_res_vec.cbegin()
));
}
{ // assert eof somehow
// since its eof, reading a single byte should return a zero sized buffer
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);
}
}
}
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{std::string_view{test2_file_path.u8string()}, 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{std::string_view{test2_file_path.u8string()}};
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{std::string_view{test3_file_path.u8string()}, 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{std::string_view{test3_file_path.u8string()}};
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);
}

19
src/fragment_store/types.hpp
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#pragma once
#include <cstdint>
enum class Encryption : uint8_t {
NONE = 0x00,
};
enum class Compression : uint8_t {
NONE = 0x00,
ZSTD = 0x01,
// TODO: zstd without magic
// TODO: zstd meta dict
// TODO: zstd data(message) dict
};
enum class MetaFileType : uint8_t {
TEXT_JSON,
BINARY_MSGPACK, // msgpacked msgpack
};

4
src/main_screen.hpp
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@ -2,8 +2,8 @@
#include "./screen.hpp"
#include "./fragment_store/object_store.hpp"
#include "./fragment_store/backends/filesystem_storage.hpp"
#include <solanaceae/object_store/object_store.hpp>
#include <solanaceae/object_store/backends/filesystem_storage.hpp>
#include <solanaceae/util/simple_config_model.hpp>
#include <solanaceae/contact/contact_model3.hpp>
#include <solanaceae/message3/registry_message_model.hpp>