975 lines
38 KiB
C++
975 lines
38 KiB
C++
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#include "./ConversationManager.h"
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#include "../InstanceHandler.h"
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#include "../TSServer.h"
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#include <experimental/filesystem>
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#include <log/LogUtils.h>
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#include <misc/sassert.h>
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/* for the file */
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#include <sys/types.h>
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#include <unistd.h>
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using namespace std;
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using namespace std::chrono;
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using namespace ts;
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using namespace ts::server;
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using namespace ts::server::conversation;
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namespace fs = std::experimental::filesystem;
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Conversation::Conversation(const std::shared_ptr<ts::server::conversation::ConversationManager> &handle, ts::ChannelId channel_id, const std::string& file) : _ref_handle(handle), _channel_id(channel_id), file_name(file) { }
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Conversation::~Conversation() {
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this->finalize();
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}
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bool Conversation::initialize(std::string& error) {
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auto ref_self = this->_ref_self.lock();
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assert(ref_self);
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auto handle = this->_ref_handle.lock();
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assert(handle);
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auto ref_server = handle->ref_server();
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if(!ref_server) {
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error = "invalid server ref";
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return false;
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}
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auto file = fs::u8path(this->file_name);
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if(!fs::is_directory(file.parent_path())) {
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debugMessage(ref_server->getServerId(), "[Conversations] Creating conversation containing directory {}", file.parent_path().string());
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try {
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fs::create_directories(file.parent_path());
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} catch(fs::filesystem_error& ex) {
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error = "failed to create data directories (" + to_string(ex.code().value()) + "|" + string(ex.what()) + ")";
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return false;
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}
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}
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this->file_handle = fopen(this->file_name.c_str(), fs::exists(file) ? "r+" : "w+");
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if(!this->file_handle) {
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error = "failed to open file";
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return false;
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}
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setbuf(this->file_handle, nullptr); /* we're doing random access (a buffer is useless here) */
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auto sql = ref_server->getSql();
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auto result = sql::command(sql, "SELECT `begin_timestamp`, `end_timestamp`, `block_offset`, `flags` FROM `conversation_blocks` WHERE `server_id` = :sid AND `conversation_id` = :cid",
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variable{":sid", ref_server->getServerId()}, variable{":cid", this->_channel_id}).query([&](int count, std::string* values, std::string* names) {
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std::chrono::system_clock::time_point begin_timestamp{}, end_timestamp{};
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uint64_t block_offset = 0;
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uint16_t flags = 0;
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try {
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for(int index = 0; index < count; index++) {
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if(names[index] == "begin_timestamp")
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begin_timestamp += milliseconds(stoll(values[index]));
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else if(names[index] == "end_timestamp")
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end_timestamp += milliseconds(stoll(values[index]));
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else if(names[index] == "block_offset")
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block_offset = stoull(values[index]);
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else if(names[index] == "flags")
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flags = (uint16_t) stoll(values[index]);
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}
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} catch(std::exception& ex) {
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logError(ref_server->getServerId(), "[Conversations] Failed to parse conversation block entry! Exception: {}", ex.what());
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return 0;
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}
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auto block = make_shared<db::MessageBlock>(db::MessageBlock{
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begin_timestamp,
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end_timestamp,
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block_offset,
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{flags},
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nullptr,
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nullptr
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});
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/* we dont load invalid blocks */
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if(block->flag_invalid)
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return 0;
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this->message_blocks.push_back(block);
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return 0;
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});
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LOG_SQL_CMD(result);
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/* lets find the last block */
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if(!this->message_blocks.empty()) {
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debugMessage(ref_server->getServerId(), "[Conversations][{}] Loaded {} blocks. Trying to find last block.", this->_channel_id, this->message_blocks.size());
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deque<shared_ptr<db::MessageBlock>> open_blocks;
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for(auto& block : this->message_blocks)
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if(!block->flag_finished)
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open_blocks.push_back(block);
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logTrace(ref_server->getServerId(), "[Conversations][{}] Found {} unfinished blocks. Searching for the \"latest\" and closing all previous blocks.", this->_channel_id, open_blocks.size());
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shared_ptr<db::MessageBlock> latest_block;
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const auto calculate_latest_block = [&](bool open_only) {
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latest_block = nullptr;
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for(auto& block : open_blocks) {
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if(block->flag_invalid)
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continue;
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if(!latest_block || latest_block->begin_timestamp < block->begin_timestamp) {
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if(latest_block) {
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latest_block->flag_finished_later = true;
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latest_block->flag_finished = true;
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this->db_save_block(latest_block);
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}
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latest_block = block;
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}
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}
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};
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calculate_latest_block(true);
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if(latest_block) {
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logTrace(ref_server->getServerId(), "[Conversations][{}] Found a latest block at index {}. Verify block with file.", this->_channel_id, latest_block->block_offset);
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const auto verify_block = [&] {
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auto result = fseek(this->file_handle, 0, SEEK_END);
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if(result != 0) {
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error = "failed to seek to the end (" + to_string(result) + " | " + to_string(errno) + ")";
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return;
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}
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auto file_size = ftell(this->file_handle);
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if(file_size < 0) {
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error = "failed to tell the end position (" + to_string(file_size) + " | " + to_string(errno) + ")";
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return;
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}
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logTrace(ref_server->getServerId(), "[Conversations][{}] File total size {}, last block index {}", this->_channel_id, file_size, latest_block->block_offset);
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if(file_size < (latest_block->block_offset + sizeof(fio::BlockHeader))) {
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latest_block->flag_finished_later = true;
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latest_block->flag_invalid = true;
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this->finish_block(latest_block, false);
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logTrace(ref_server->getServerId(), "[Conversations][{}] File total size is less than block requires. Appending a new block at the end of the file.", this->_channel_id, latest_block->block_offset);
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latest_block = nullptr;
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return;
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}
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if(!this->load_message_block_header(latest_block, error)) {
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latest_block->flag_finished_later = true;
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latest_block->flag_invalid = true;
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this->finish_block(latest_block, false);
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logTrace(ref_server->getServerId(), "[Conversations][{}] Failed to load latest block at file index {}: {}. Appending an new one.", this->_channel_id, latest_block->block_offset, error);
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error = "";
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latest_block = nullptr;
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return;
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}
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/* We've a valid last block. Now the general write function could decide if we want a new block. */
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this->last_message_block = latest_block;
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logTrace(ref_server->getServerId(), "[Conversations][{}] Last db saved block valid. Reusing it.", this->_channel_id, latest_block->block_offset, error);
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};
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verify_block();
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if(!error.empty()) {
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latest_block->flag_finished_later = true;
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latest_block->flag_invalid = true;
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this->finish_block(latest_block, false);
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logError(ref_server->getServerId(), "[Conversations][{}] Could not verify last block. Appending a new one at the end of the file.", this->_channel_id);
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latest_block = nullptr;
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}
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error = "";
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} else {
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logTrace(ref_server->getServerId(), "[Conversations][{}] Found no open last block. Using a new one.", this->_channel_id);
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}
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} else {
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debugMessage(ref_server->getServerId(), "[Conversations][{}] Found no blocks. Creating new at the end of the file.", this->_channel_id, this->message_blocks.size());
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}
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std::stable_sort(this->message_blocks.begin(), this->message_blocks.end(), [](const shared_ptr<db::MessageBlock>& a, const shared_ptr<db::MessageBlock>& b) { return a->begin_timestamp < b->begin_timestamp; });
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this->_write_event = make_shared<event::ProxiedEventEntry<Conversation>>(ts::event::ProxiedEventEntry<Conversation>(ref_self, &Conversation::process_write_queue));
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/* set the last message timestamp property */
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{
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auto last_message = this->message_history(1);
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if(!last_message.empty())
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this->_last_message_timestamp = last_message.back()->message_timestamp;
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else
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this->_last_message_timestamp = system_clock::time_point{};
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}
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return true;
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}
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void Conversation::finalize() {
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this->_write_event = nullptr; /* we dont want to schedule/execute new events! */
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this->_write_loop_lock.lock(); /* wait until current write proceed */
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this->_write_loop_lock.unlock();
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//TODO: May flush?
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{
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lock_guard lock(this->message_block_lock);
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this->message_blocks.clear();
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}
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}
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void Conversation::cleanup_cache() {
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//FIXME: Implement this shit here!
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}
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ssize_t Conversation::fread(void *target, size_t length, ssize_t index) {
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if(length == 0)
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return 0;
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lock_guard file_lock(this->file_handle_lock);
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if(index >= 0) {
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auto result = fseek(this->file_handle, index, SEEK_SET);
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if(result < 0)
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return -2;
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}
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size_t total_read = 0;
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while(total_read < length) {
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auto read = ::fread_unlocked((char*) target + total_read, 1, length - total_read, this->file_handle);
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if(read <= 0)
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return -1;
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total_read += read;
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}
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return total_read;
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}
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ssize_t Conversation::fwrite(void *target, size_t length, ssize_t index, bool extend_file) {
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if(length == 0)
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return 0;
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extend_file = false; /* fseek does the job good ad well */
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lock_guard file_lock(this->file_handle_lock);
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if(index >= 0) {
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auto result = extend_file ? lseek(fileno(this->file_handle), index, SEEK_SET) : fseek(this->file_handle, index, SEEK_SET);
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if(result < 0)
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return -2;
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}
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size_t total_written = 0;
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while(total_written < length) {
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auto written = ::fwrite_unlocked((char*) target + total_written, 1, length - total_written, this->file_handle);
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if(written <= 0)
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return -1;
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total_written += written;
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}
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return total_written;
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}
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bool Conversation::load_message_block_header(const std::shared_ptr<ts::server::conversation::db::MessageBlock> &block, std::string &error) {
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if(block->block_header)
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return true;
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auto block_header = make_unique<fio::BlockHeader>();
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if(this->fread(&*block_header, sizeof(*block_header), block->block_offset) != sizeof(*block_header)) {
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error = "failed to read block header";
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return false;
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}
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if(block_header->version != 1) {
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error = "block version missmatch (block version: " + to_string(block_header->version) + ", current version: 1)";
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return false;
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}
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if(block_header->cookie != fio::BlockHeader::HEADER_COOKIE) {
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error = "block cookie missmatch";
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return false;
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}
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block->block_header = move(block_header);
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return true;
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}
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bool Conversation::load_message_block_index(const std::shared_ptr<ts::server::conversation::db::MessageBlock> &block, std::string& error) {
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if(block->indexed_block)
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return true;
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auto index = make_shared<fio::IndexedBlock>();
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index->successfully = false;
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{
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if(!this->load_message_block_header(block, error)) {
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error = "failed to load block header: " + error;
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return false;
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}
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auto block_header = block->block_header;
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if(!block_header) {
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error = "failed to reference block header ";
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return false;
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}
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if(block_header->block_size > fio::BlockHeader::MAX_BLOCK_SIZE) {
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error = "block contains too many messages (" + to_string(block_header->block_size) + ")";
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return false;
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}
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size_t offset = block->block_offset;
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offset += sizeof(fio::BlockHeader);
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size_t max_offset = block->block_offset + block_header->block_size; /* block_size := Written size, must be smaller or equal to the max size, except max size is 0 */
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fio::MessageHeader header{};
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while(offset < max_offset) {
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if(this->fread(&header, sizeof(header), offset) != sizeof(header)) {
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error = "failed to read message header at index" + to_string(offset);
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return false;
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}
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if(header.cookie != fio::MessageHeader::HEADER_COOKIE) {
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error = "failed to verify message header cookie at index " + to_string(offset);
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return false;
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}
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index->message_index.emplace_back(fio::IndexedMessage{(uint32_t) (offset - block->block_offset), system_clock::time_point{} + milliseconds{header.message_timestamp}, std::shared_ptr<fio::IndexedMessageData>{nullptr}});
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offset += header.total_length;
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}
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}
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block->indexed_block = index;
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return true;
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}
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bool Conversation::load_messages(const std::shared_ptr<db::MessageBlock> &block, size_t index, size_t end_index, std::string &error) {
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if(!this->load_message_block_index(block, error)) {
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error = "failed to index block: " + error;
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return false;
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}
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auto indexed_block = block->indexed_block;
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auto header = block->block_header;
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if(!indexed_block || !header) {
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error = "failed to reference required data";
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return false;
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}
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/* Note: We dont lock message_index_lock here because the write thread only increases the list and dont take stuff away where we could pointing at! */
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||
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if(index >= indexed_block->message_index.size())
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return true;
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auto result = fseek(this->file_handle, block->block_offset + indexed_block->message_index[index].offset, SEEK_SET);
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|
|
if(result == EINVAL) {
|
||
|
|
error = "failed to seek to begin of an indexed block read";
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
while(index < end_index && index < indexed_block->message_index.size()) {
|
||
|
|
auto& message_data = indexed_block->message_index[index];
|
||
|
|
if(message_data.message_data) {
|
||
|
|
index++;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
auto data = make_shared<fio::IndexedMessageData>();
|
||
|
|
if(this->fread(&data->header, sizeof(data->header), -1) != sizeof(data->header)) {
|
||
|
|
error = "failed to read message header at index " + to_string(index);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(data->header.cookie != fio::MessageHeader::HEADER_COOKIE) {
|
||
|
|
error = "failed to verify message header at " + to_string(index);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
data->sender_unique_id.resize(data->header.sender_unique_id_length);
|
||
|
|
data->sender_name.resize(data->header.sender_name_length);
|
||
|
|
data->message.resize(data->header.message_length);
|
||
|
|
|
||
|
|
if(this->fread(data->sender_unique_id.data(), data->sender_unique_id.length(), -1) != data->sender_unique_id.length()) {
|
||
|
|
error = "failed to read message sender unique id at " + to_string(index);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(this->fread(data->sender_name.data(), data->sender_name.length(), -1) != data->sender_name.length()) {
|
||
|
|
error = "failed to read message sender name id at " + to_string(index);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(this->fread(data->message.data(), data->message.length(), -1) != data->message.length()) {
|
||
|
|
error = "failed to read message id at " + to_string(index);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(header->message_encrypted) {
|
||
|
|
uint64_t crypt_key = block->block_offset ^ data->header.message_timestamp;
|
||
|
|
size_t length_left = data->message.size();
|
||
|
|
auto ptr = (char*) data->message.data();
|
||
|
|
while(length_left >= 8) {
|
||
|
|
crypt_key ^= (crypt_key << (length_left & 0x7)) ^ length_left;
|
||
|
|
*(uint64_t*) ptr ^= crypt_key;
|
||
|
|
ptr += 8;
|
||
|
|
length_left -= 8;
|
||
|
|
}
|
||
|
|
while(length_left > 0) {
|
||
|
|
crypt_key ^= (crypt_key << (length_left & 0x7)) ^ length_left;
|
||
|
|
*ptr ^= (uint8_t) crypt_key;
|
||
|
|
length_left--;
|
||
|
|
ptr++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
message_data.message_data = data;
|
||
|
|
index++;
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
void Conversation::finish_block(const std::shared_ptr<ts::server::conversation::db::MessageBlock> &block, bool write_file) {
|
||
|
|
if(block->flag_finished)
|
||
|
|
return;
|
||
|
|
|
||
|
|
auto handle = this->_ref_handle.lock();
|
||
|
|
sassert(handle);
|
||
|
|
if(!handle)
|
||
|
|
return;
|
||
|
|
|
||
|
|
auto ref_server = handle->ref_server();
|
||
|
|
if(!ref_server)
|
||
|
|
return;
|
||
|
|
|
||
|
|
block->flag_finished = true;
|
||
|
|
|
||
|
|
if(write_file) {
|
||
|
|
string error;
|
||
|
|
auto result = this->load_message_block_header(block, error);
|
||
|
|
auto header = block->block_header;
|
||
|
|
result &= !!header; /* only success if we really have a header */
|
||
|
|
if(result) {
|
||
|
|
if(header->block_max_size == 0) {
|
||
|
|
header->block_max_size = header->block_size;
|
||
|
|
header->finished = true;
|
||
|
|
if(!this->write_block_header(header, block->block_offset, error)) {
|
||
|
|
logError(ref_server->getServerId(), "Failed to finish block because block header could not be written: {}", error);
|
||
|
|
block->flag_invalid = true; /* because we cant set the block size we've to declare that block as invalid */
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
logError(ref_server->getServerId(), "Failed to finish block because block header could not be set: {}", error);
|
||
|
|
block->flag_invalid = true; /* because we cant set the block size we've to declare that block as invalid */
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
block->flag_invalid = true; /* because we dont write the block we cant ensure a valid block */
|
||
|
|
}
|
||
|
|
|
||
|
|
this->db_save_block(block);
|
||
|
|
}
|
||
|
|
|
||
|
|
bool Conversation::write_block_header(const std::shared_ptr<fio::BlockHeader> &header, size_t index, std::string &error) {
|
||
|
|
auto code = this->fwrite(&*header, sizeof(fio::BlockHeader), index, false);
|
||
|
|
if(code == sizeof(fio::BlockHeader))
|
||
|
|
return true;
|
||
|
|
error = "write returned " + to_string(code);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
void Conversation::process_write_queue(const std::chrono::system_clock::time_point &scheduled_time) {
|
||
|
|
unique_lock write_lock(this->_write_loop_lock, try_to_lock);
|
||
|
|
if(!write_lock.owns_lock()) /* we're already writing if this lock fails */
|
||
|
|
return;
|
||
|
|
|
||
|
|
unique_lock write_queue_lock(this->_write_queue_lock, defer_lock);
|
||
|
|
std::shared_ptr<ConversationEntry> write_entry;
|
||
|
|
fio::MessageHeader write_header{};
|
||
|
|
std::shared_ptr<fio::BlockHeader> block_header;
|
||
|
|
auto handle = this->_ref_handle.lock();
|
||
|
|
sassert(handle);
|
||
|
|
if(!handle)
|
||
|
|
return;
|
||
|
|
|
||
|
|
auto ref_server = handle->ref_server();
|
||
|
|
if(!ref_server)
|
||
|
|
return;
|
||
|
|
|
||
|
|
write_header.cookie = fio::MessageHeader::HEADER_COOKIE;
|
||
|
|
write_header.message_flags = 0;
|
||
|
|
|
||
|
|
while(true) {
|
||
|
|
write_queue_lock.lock();
|
||
|
|
if(this->_write_queue.empty())
|
||
|
|
break;
|
||
|
|
write_entry = this->_write_queue.front();
|
||
|
|
this->_write_queue.pop_front();
|
||
|
|
write_queue_lock.unlock();
|
||
|
|
|
||
|
|
/* calculate the write message total length */
|
||
|
|
write_header.message_length = (uint16_t) min(write_entry->message.size(), (size_t) (65536 - 1));
|
||
|
|
write_header.sender_name_length = (uint8_t) min(write_entry->sender_name.size(), (size_t) 255);
|
||
|
|
write_header.sender_unique_id_length = (uint8_t) min(write_entry->sender_unique_id.size(), (size_t) 255);
|
||
|
|
write_header.total_length = sizeof(write_header) + write_header.sender_unique_id_length + write_header.sender_name_length + write_header.message_length;
|
||
|
|
|
||
|
|
/* verify last block */
|
||
|
|
if(this->last_message_block) {
|
||
|
|
block_header = this->last_message_block->block_header;
|
||
|
|
|
||
|
|
if(!block_header) {
|
||
|
|
logError(ref_server->getServerId(), "[Conversations][{}] Current last block contains no header! Try to finish it and creating a new one.", this->_channel_id);
|
||
|
|
this->finish_block(this->last_message_block, true);
|
||
|
|
this->last_message_block = nullptr;
|
||
|
|
} else if(this->last_message_block->flag_finished)
|
||
|
|
this->last_message_block = nullptr;
|
||
|
|
else {
|
||
|
|
if(this->last_message_block->begin_timestamp + hours(24) < scheduled_time) {
|
||
|
|
debugMessage(ref_server->getServerId(), "[Conversations][{}] Beginning new block. Old block is older than 24hrs. ({})", this->_channel_id, this->last_message_block->begin_timestamp.time_since_epoch().count());
|
||
|
|
this->finish_block(this->last_message_block, true);
|
||
|
|
this->last_message_block = nullptr;
|
||
|
|
} else if((block_header->block_max_size != 0 && block_header->block_size + write_header.total_length >= block_header->block_max_size) || block_header->block_size > fio::BlockHeader::MAX_BLOCK_SIZE){
|
||
|
|
debugMessage(ref_server->getServerId(), "[Conversations][{}] Beginning new block. Old block would exceed his space (Current index: {}, Max index: {}, Soft cap: {}, Message size: {}).",
|
||
|
|
this->_channel_id, block_header->block_size, block_header->block_max_size, fio::BlockHeader::MAX_BLOCK_SIZE, write_header.total_length);
|
||
|
|
this->finish_block(this->last_message_block, true);
|
||
|
|
this->last_message_block = nullptr;
|
||
|
|
} else if(block_header->message_version != 1){
|
||
|
|
debugMessage(ref_server->getServerId(), "[Conversations][{}] Beginning new block. Old block had another message version (Current version: {}, Block version: {}).", this->_channel_id, 1, block_header->message_version);
|
||
|
|
this->finish_block(this->last_message_block, true);
|
||
|
|
this->last_message_block = nullptr;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/* test if we have a block or create a new one at the begin of the file */
|
||
|
|
if(!this->last_message_block) {
|
||
|
|
//Note: If we reuse blocks we've to reorder them within message_blocks (newest blocks are at the end)
|
||
|
|
//TODO: Find "free" blocks and use them! (But do not use indirectly finished blocks, their max size could be invalid)
|
||
|
|
|
||
|
|
unique_lock file_lock(this->file_handle_lock);
|
||
|
|
auto result = fseek(this->file_handle, 0, SEEK_END);
|
||
|
|
if(result != 0) {
|
||
|
|
logError(ref_server->getServerId(), "[Conversations][{}] failed to seek to the end (" + to_string(result) + " " + to_string(errno) + "). Could not create new block. Dropping message!", this->_channel_id);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
auto file_size = ftell(this->file_handle);
|
||
|
|
if(file_size < 0) {
|
||
|
|
logError(ref_server->getServerId(), "[Conversations][{}] failed to tell the end position (" + to_string(result) + " " + to_string(errno) + "). Could not create new block. Dropping message!", this->_channel_id);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
file_lock.unlock();
|
||
|
|
this->last_message_block = this->db_create_block((uint64_t) file_size);
|
||
|
|
if(!this->last_message_block) {
|
||
|
|
logError(ref_server->getServerId(), "[Conversations][{}] Failed to create a new block within database. Dropping message!", this->_channel_id);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
block_header = make_shared<fio::BlockHeader>();
|
||
|
|
memset(&*block_header, 0, sizeof(fio::BlockHeader));
|
||
|
|
|
||
|
|
block_header->version = 1;
|
||
|
|
block_header->message_version = 1;
|
||
|
|
block_header->cookie = fio::BlockHeader::HEADER_COOKIE;
|
||
|
|
block_header->first_message_timestamp = (uint64_t) duration_cast<milliseconds>(write_entry->message_timestamp.time_since_epoch()).count();
|
||
|
|
block_header->block_size = sizeof(fio::BlockHeader);
|
||
|
|
|
||
|
|
//block_header->message_encrypted = true; /* May add some kind of hidden debug option? */
|
||
|
|
this->last_message_block->block_header = block_header;
|
||
|
|
}
|
||
|
|
|
||
|
|
auto entry_offset = this->last_message_block->block_offset + sizeof(fio::BlockHeader) + block_header->last_message_offset;
|
||
|
|
write_header.sender_database_id = write_entry->sender_database_id;
|
||
|
|
write_header.message_timestamp = (uint64_t) duration_cast<milliseconds>(write_entry->message_timestamp.time_since_epoch()).count();
|
||
|
|
block_header->last_message_timestamp = write_header.message_timestamp;
|
||
|
|
|
||
|
|
/* first write the header */
|
||
|
|
if(this->fwrite(&write_header, sizeof(write_header), entry_offset, true) != sizeof(write_header)) {
|
||
|
|
logError(ref_server->getServerId(), "[Conversations][{}] Failed to write message header. Dropping message!", this->_channel_id);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
entry_offset += sizeof(write_header);
|
||
|
|
|
||
|
|
/* then write the sender unique id */
|
||
|
|
if(this->fwrite(write_entry->sender_unique_id.data(), write_header.sender_unique_id_length, entry_offset, true) != write_header.sender_unique_id_length) {
|
||
|
|
logError(ref_server->getServerId(), "[Conversations][{}] Failed to write message sender unique id. Dropping message!", this->_channel_id);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
entry_offset += write_header.sender_unique_id_length;
|
||
|
|
|
||
|
|
/* then write the sender name */
|
||
|
|
if(this->fwrite(write_entry->sender_name.data(), write_header.sender_name_length, entry_offset, true) != write_header.sender_name_length) {
|
||
|
|
logError(ref_server->getServerId(), "[Conversations][{}] Failed to write message sender name. Dropping message!", this->_channel_id);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
entry_offset += write_header.sender_name_length;
|
||
|
|
|
||
|
|
/* then write the message */
|
||
|
|
bool message_result;
|
||
|
|
if(block_header->message_encrypted) {
|
||
|
|
uint64_t crypt_key = this->last_message_block->block_offset ^ write_header.message_timestamp;
|
||
|
|
size_t length_left = write_entry->message.size();
|
||
|
|
auto ptr = (char*) write_entry->message.data();
|
||
|
|
char* target_buffer = (char*) malloc(length_left);
|
||
|
|
char* target_buffer_ptr = target_buffer;
|
||
|
|
assert(target_buffer);
|
||
|
|
|
||
|
|
while(length_left >= 8) {
|
||
|
|
crypt_key ^= (crypt_key << (length_left & 0x7)) ^ length_left;
|
||
|
|
*(uint64_t*) target_buffer_ptr = crypt_key;
|
||
|
|
ptr += 8;
|
||
|
|
target_buffer_ptr += 8;
|
||
|
|
length_left -= 8;
|
||
|
|
}
|
||
|
|
while(length_left > 0) {
|
||
|
|
crypt_key ^= (crypt_key << (length_left & 0x7)) ^ length_left;
|
||
|
|
*target_buffer_ptr = *ptr ^ (uint8_t) crypt_key;
|
||
|
|
length_left--;
|
||
|
|
ptr++;
|
||
|
|
target_buffer_ptr++;
|
||
|
|
}
|
||
|
|
|
||
|
|
message_result = this->fwrite(target_buffer, write_header.message_length, entry_offset, true) == write_header.message_length;
|
||
|
|
free(target_buffer);
|
||
|
|
} else {
|
||
|
|
message_result = this->fwrite(write_entry->message.data(), write_header.message_length, entry_offset, true) == write_header.message_length;
|
||
|
|
}
|
||
|
|
if(!message_result) {
|
||
|
|
logError(ref_server->getServerId(), "[Conversations][{}] Failed to write message. Dropping message!", this->_channel_id);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
entry_offset += write_header.message_length;
|
||
|
|
|
||
|
|
block_header->last_message_offset = (uint32_t) (entry_offset - this->last_message_block->block_offset - sizeof(fio::BlockHeader));
|
||
|
|
block_header->block_size += write_header.total_length;
|
||
|
|
block_header->message_count += 1;
|
||
|
|
|
||
|
|
auto indexed_block = this->last_message_block->indexed_block;
|
||
|
|
if(indexed_block) {
|
||
|
|
lock_guard lock(indexed_block->message_index_lock);
|
||
|
|
indexed_block->message_index.push_back(fio::IndexedMessage{(uint32_t) (entry_offset - this->last_message_block->block_offset), write_entry->message_timestamp, nullptr});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if(write_header.total_length != 0) {/* will be set when at least one message has been written */
|
||
|
|
this->db_save_block(this->last_message_block);
|
||
|
|
|
||
|
|
string error;
|
||
|
|
if(!this->write_block_header(block_header, this->last_message_block->block_offset, error)) {
|
||
|
|
logWarning(ref_server->getServerId(), "[Conversations][{}] Failed to write block header after message write ({}). This could cause data loss!", this->_channel_id, error);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
std::shared_ptr<db::MessageBlock> Conversation::db_create_block(uint64_t offset) {
|
||
|
|
auto result = make_shared<db::MessageBlock>();
|
||
|
|
result->block_offset = offset;
|
||
|
|
result->begin_timestamp = system_clock::now();
|
||
|
|
result->end_timestamp = system_clock::now();
|
||
|
|
result->flags = 0;
|
||
|
|
result->flag_used = true;
|
||
|
|
result->flag_invalid = true; /* first set it to invalid for the database so it becomes active as soon somebody uses it */
|
||
|
|
|
||
|
|
auto handle = this->_ref_handle.lock();
|
||
|
|
assert(handle);
|
||
|
|
|
||
|
|
auto ref_server = handle->ref_server();
|
||
|
|
if(!ref_server)
|
||
|
|
return nullptr;
|
||
|
|
|
||
|
|
auto sql = ref_server->getSql();
|
||
|
|
if(!sql)
|
||
|
|
return nullptr;
|
||
|
|
|
||
|
|
//`server_id` INT, `conversation_id` INT, `begin_timestamp` INT, `end_timestamp` INT, `block_offset` INT, `flags` INT
|
||
|
|
auto sql_result = sql::command(sql, "INSERT INTO `conversation_blocks` (`server_id`, `conversation_id`, `begin_timestamp`, `end_timestamp`, `block_offset`, `flags`) VALUES (:sid, :cid, :bt, :et, :bo, :f);",
|
||
|
|
variable{":sid", ref_server->getServerId()},
|
||
|
|
variable{":cid", this->_channel_id},
|
||
|
|
variable{":bt", duration_cast<milliseconds>(result->begin_timestamp.time_since_epoch()).count()},
|
||
|
|
variable{":et", duration_cast<milliseconds>(result->end_timestamp.time_since_epoch()).count()},
|
||
|
|
variable{":bo", offset},
|
||
|
|
variable{":f", result->flags}
|
||
|
|
).executeLater();
|
||
|
|
sql_result.waitAndGetLater(LOG_SQL_CMD, {-1, "future error"});
|
||
|
|
|
||
|
|
{
|
||
|
|
lock_guard lock(this->message_block_lock);
|
||
|
|
this->message_blocks.push_back(result);
|
||
|
|
}
|
||
|
|
|
||
|
|
result->flag_invalid = false;
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
void Conversation::db_save_block(const std::shared_ptr<db::MessageBlock> &block) {
|
||
|
|
auto handle = this->_ref_handle.lock();
|
||
|
|
assert(handle);
|
||
|
|
|
||
|
|
auto ref_server = handle->ref_server();
|
||
|
|
if(!ref_server) {
|
||
|
|
logWarning(ref_server->getServerId(), "[Conversations][{}] Failed to update block db info (server expired)", this->_channel_id);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
auto sql = ref_server->getSql();
|
||
|
|
if(!sql) {
|
||
|
|
logWarning(ref_server->getServerId(), "[Conversations][{}] Failed to update block db info (sql expired)", this->_channel_id);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
auto sql_result = sql::command(sql, "UPDATE `conversation_blocks` SET `end_timestamp` = :et, `flags` = :f WHERE `server_id` = :sid AND `conversation_id` = :cid AND `begin_timestamp` = :bt AND `block_offset` = :bo",
|
||
|
|
variable{":sid", ref_server->getServerId()},
|
||
|
|
variable{":cid", this->_channel_id},
|
||
|
|
variable{":bt", duration_cast<milliseconds>(block->begin_timestamp.time_since_epoch()).count()},
|
||
|
|
variable{":et", duration_cast<milliseconds>(block->end_timestamp.time_since_epoch()).count()},
|
||
|
|
variable{":bo", block->block_offset},
|
||
|
|
variable{":f", block->flags}
|
||
|
|
).executeLater();
|
||
|
|
sql_result.waitAndGetLater(LOG_SQL_CMD, {-1, "future error"});
|
||
|
|
}
|
||
|
|
|
||
|
|
void Conversation::register_message(ts::ClientDbId sender_database_id, const std::string &sender_unique_id, const std::string &sender_name, const std::string &message) {
|
||
|
|
auto entry = make_shared<ConversationEntry>();
|
||
|
|
entry->message_timestamp = system_clock::now();
|
||
|
|
this->_last_message_timestamp = entry->message_timestamp;
|
||
|
|
entry->message = message;
|
||
|
|
entry->sender_name = sender_name;
|
||
|
|
entry->sender_unique_id = sender_unique_id;
|
||
|
|
entry->sender_database_id = sender_database_id;
|
||
|
|
|
||
|
|
{
|
||
|
|
lock_guard lock(this->_last_messages_lock);
|
||
|
|
this->_last_messages.push_back(entry);
|
||
|
|
while(this->_last_messages.size() > this->_last_messages_limit)
|
||
|
|
this->_last_messages.pop_front(); /* TODO: Use a iterator for delete to improve performance */
|
||
|
|
}
|
||
|
|
if(!this->volatile_only()) {
|
||
|
|
{
|
||
|
|
lock_guard lock(this->_write_queue_lock);
|
||
|
|
this->_write_queue.push_back(entry);
|
||
|
|
}
|
||
|
|
auto executor = serverInstance->getConversationIo();
|
||
|
|
executor->schedule(this->_write_event);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
std::deque<std::shared_ptr<ConversationEntry>> Conversation::message_history(const std::chrono::system_clock::time_point &end_timestamp, size_t message_count, const std::chrono::system_clock::time_point &begin_timestamp) {
|
||
|
|
std::deque<std::shared_ptr<ConversationEntry>> result;
|
||
|
|
if(message_count == 0)
|
||
|
|
return result;
|
||
|
|
|
||
|
|
/* first try to fillout the result with the cached messages */
|
||
|
|
{
|
||
|
|
lock_guard lock(this->_last_messages_lock);
|
||
|
|
//TODO: May just insert the rest of the iterator instead of looping?
|
||
|
|
for(auto it = this->_last_messages.rbegin(); it != this->_last_messages.rend(); it++) {
|
||
|
|
if((*it)->message_timestamp > end_timestamp) /* message has been send after the search timestamp */
|
||
|
|
continue;
|
||
|
|
result.push_back(*it);
|
||
|
|
if(--message_count == 0)
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if(!this->volatile_only()) {
|
||
|
|
auto timestamp = result.empty() ? end_timestamp : result.back()->message_timestamp;
|
||
|
|
|
||
|
|
unique_lock lock(this->message_block_lock);
|
||
|
|
auto rit = this->message_blocks.end();
|
||
|
|
if(rit != this->message_blocks.begin()) {
|
||
|
|
bool found = false;
|
||
|
|
do {
|
||
|
|
rit--;
|
||
|
|
if((*rit)->begin_timestamp < timestamp) {
|
||
|
|
found = true;
|
||
|
|
break; /* we found the first block which is created before the point we're searching from */
|
||
|
|
}
|
||
|
|
} while(rit != this->message_blocks.begin());
|
||
|
|
|
||
|
|
|
||
|
|
string error;
|
||
|
|
if(found) {
|
||
|
|
vector<shared_ptr<db::MessageBlock>> relevant_entries{this->message_blocks.begin(), ++rit};
|
||
|
|
lock.unlock();
|
||
|
|
|
||
|
|
auto _rit = --relevant_entries.end();
|
||
|
|
do {
|
||
|
|
auto block = *_rit;
|
||
|
|
/* lets search for messages */
|
||
|
|
if(!this->load_message_block_index(block, error)) {
|
||
|
|
//TODO: Log error
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
auto index = (*_rit)->indexed_block;
|
||
|
|
if(!index) {
|
||
|
|
//TODO Log error
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
lock_guard index_lock{index->message_index_lock};
|
||
|
|
auto rmid = index->message_index.end();
|
||
|
|
if(rmid == index->message_index.begin())
|
||
|
|
continue; /* Empty block? Funny */
|
||
|
|
|
||
|
|
auto block_found = false;
|
||
|
|
do {
|
||
|
|
rmid--;
|
||
|
|
if((*rmid).timestamp < timestamp) {
|
||
|
|
block_found = true;
|
||
|
|
break; /* we found the first block which is created before the point we're searching from */
|
||
|
|
}
|
||
|
|
} while(rmid != index->message_index.begin());
|
||
|
|
if(!block_found)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
|
||
|
|
if(!this->load_messages(block, 0, std::distance(index->message_index.begin(), rmid) + 1, error)) {
|
||
|
|
//TODO: Log error
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
do {
|
||
|
|
auto data = rmid->message_data;
|
||
|
|
if(!data)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
if(begin_timestamp.time_since_epoch().count() != 0 && rmid->timestamp < begin_timestamp)
|
||
|
|
return result;
|
||
|
|
/*
|
||
|
|
std::chrono::system_clock::time_point message_timestamp;
|
||
|
|
|
||
|
|
ClientDbId sender_database_id;
|
||
|
|
std::string sender_unique_id;
|
||
|
|
std::string sender_name;
|
||
|
|
|
||
|
|
std::string message;
|
||
|
|
*/
|
||
|
|
result.push_back(make_shared<ConversationEntry>(ConversationEntry{
|
||
|
|
rmid->timestamp,
|
||
|
|
|
||
|
|
(ClientDbId) data->header.sender_database_id,
|
||
|
|
data->sender_unique_id,
|
||
|
|
data->sender_name,
|
||
|
|
|
||
|
|
data->message
|
||
|
|
}));
|
||
|
|
if(--message_count == 0)
|
||
|
|
return result;
|
||
|
|
} while(rmid-- != index->message_index.begin());
|
||
|
|
} while(_rit-- != relevant_entries.begin());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
ConversationManager::ConversationManager(const std::shared_ptr<ts::server::TSServer> &server) : _ref_server(server) { }
|
||
|
|
|
||
|
|
ConversationManager::~ConversationManager() { }
|
||
|
|
|
||
|
|
void ConversationManager::initialize(const std::shared_ptr<ConversationManager> &_this) {
|
||
|
|
assert(&*_this == this);
|
||
|
|
this->_ref_this = _this;
|
||
|
|
|
||
|
|
auto ref_server = this->ref_server();
|
||
|
|
assert(ref_server);
|
||
|
|
auto sql = ref_server->getSql();
|
||
|
|
assert(sql);
|
||
|
|
|
||
|
|
auto result = sql::command(sql, "SELECT `conversation_id`, `file_path` FROM `conversations` WHERE `server_id` = :sid", variable{":sid", ref_server->getServerId()}).query([&](int count, std::string* values, std::string* names) {
|
||
|
|
ChannelId conversation_id = 0;
|
||
|
|
std::string file_path;
|
||
|
|
|
||
|
|
try {
|
||
|
|
for(int index = 0; index < count; index++) {
|
||
|
|
if(names[index] == "conversation_id")
|
||
|
|
conversation_id += stoll(values[index]);
|
||
|
|
else if(names[index] == "file_path")
|
||
|
|
file_path += values[index];
|
||
|
|
}
|
||
|
|
} catch(std::exception& ex) {
|
||
|
|
logError(ref_server->getServerId(), "[Conversations] Failed to parse conversation entry! Exception: {}", ex.what());
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
auto conversation = make_shared<Conversation>(_this, conversation_id, file_path);
|
||
|
|
conversation->set_ref_self(conversation);
|
||
|
|
string error;
|
||
|
|
if(!conversation->initialize(error)) {
|
||
|
|
logError(ref_server->getServerId(), "[Conversations] Failed to load conversation for channel {}: {}. Conversation is in volatile mode", conversation_id, error);
|
||
|
|
}
|
||
|
|
this->_conversations.push_back(conversation);
|
||
|
|
return 0;
|
||
|
|
});
|
||
|
|
LOG_SQL_CMD(result);
|
||
|
|
debugMessage(ref_server->getServerId(), "[Conversations] Loaded {} conversations", this->_conversations.size());
|
||
|
|
}
|
||
|
|
|
||
|
|
bool ConversationManager::conversation_exists(ts::ChannelId channel_id) {
|
||
|
|
lock_guard lock(this->_conversations_lock);
|
||
|
|
return find_if(this->_conversations.begin(), this->_conversations.end(), [&](const shared_ptr<Conversation>& conv){ return conv->channel_id() == channel_id; })!= this->_conversations.end();
|
||
|
|
}
|
||
|
|
|
||
|
|
std::shared_ptr<Conversation> ConversationManager::get(ts::ChannelId channel_id) {
|
||
|
|
unique_lock lock(this->_conversations_lock);
|
||
|
|
auto found = find_if(this->_conversations.begin(), this->_conversations.end(), [&](const shared_ptr<Conversation>& conv){ return conv->channel_id() == channel_id; });
|
||
|
|
if(found != this->_conversations.end())
|
||
|
|
return *found;
|
||
|
|
return nullptr;
|
||
|
|
}
|
||
|
|
|
||
|
|
std::shared_ptr<Conversation> ConversationManager::get_or_create(ts::ChannelId channel_id) {
|
||
|
|
unique_lock lock(this->_conversations_lock);
|
||
|
|
auto found = find_if(this->_conversations.begin(), this->_conversations.end(), [&](const shared_ptr<Conversation>& conv){ return conv->channel_id() == channel_id; });
|
||
|
|
if(found != this->_conversations.end())
|
||
|
|
return *found;
|
||
|
|
|
||
|
|
auto ref_server = this->ref_server();
|
||
|
|
assert(ref_server);
|
||
|
|
|
||
|
|
//TODO: More configurable!
|
||
|
|
auto file_path = "files/server_" + to_string(ref_server->getServerId()) + "/conversations/conversation_" + to_string(channel_id) + ".cvs";
|
||
|
|
auto conversation = make_shared<Conversation>(this->_ref_this.lock(), channel_id, file_path);
|
||
|
|
conversation->set_ref_self(conversation);
|
||
|
|
this->_conversations.push_back(conversation);
|
||
|
|
lock.unlock();
|
||
|
|
|
||
|
|
{
|
||
|
|
auto sql_result = sql::command(ref_server->getSql(), "INSERT INTO `conversations` (`server_id`, `channel_id`, `conversation_id`, `file_path`) VALUES (:sid, :cid, :cid, :fpath)",
|
||
|
|
variable{":sid", ref_server->getServerId()}, variable{":cid", channel_id}, variable{":fpath", file_path}).executeLater();
|
||
|
|
sql_result.waitAndGetLater(LOG_SQL_CMD, {-1, "future error"});
|
||
|
|
}
|
||
|
|
|
||
|
|
string error;
|
||
|
|
if(!conversation->initialize(error))
|
||
|
|
logError(ref_server->getServerId(), "[Conversations] Failed to load conversation for channel {}: {}. Conversation is in volatile mode", channel_id, error);
|
||
|
|
return conversation;
|
||
|
|
}
|
||
|
|
|
||
|
|
void ConversationManager::delete_conversation(ts::ChannelId channel_id) {
|
||
|
|
{
|
||
|
|
lock_guard lock(this->_conversations_lock);
|
||
|
|
this->_conversations.erase(remove_if(this->_conversations.begin(), this->_conversations.end(), [&](const shared_ptr<Conversation>& conv){ return conv->channel_id() == channel_id; }), this->_conversations.end());
|
||
|
|
}
|
||
|
|
|
||
|
|
auto ref_server = this->ref_server();
|
||
|
|
if(!ref_server) {
|
||
|
|
logWarning(ref_server->getServerId(), "[Conversations][{}] Failed to delete conversation (server expired)", channel_id);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
auto sql = ref_server->getSql();
|
||
|
|
if(!sql) {
|
||
|
|
logWarning(ref_server->getServerId(), "[Conversations][{}] Failed to delete conversation (sql expired)", channel_id);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
{
|
||
|
|
auto sql_result = sql::command(sql, "DELETE FROM `conversations` WHERE `server_id` = :sid AND `channel_id` = :cid AND `conversation_id` = :cid", variable{":sid", ref_server->getServerId()}, variable{":cid", channel_id}).executeLater();
|
||
|
|
sql_result.waitAndGetLater(LOG_SQL_CMD, {-1, "future error"});
|
||
|
|
}
|
||
|
|
{
|
||
|
|
auto sql_result = sql::command(sql, "DELETE FROM `conversation_blocks` WHERE `server_id` = :sid AND `conversation_id` = :cid", variable{":sid", ref_server->getServerId()}, variable{":cid", channel_id}).executeLater();
|
||
|
|
sql_result.waitAndGetLater(LOG_SQL_CMD, {-1, "future error"});
|
||
|
|
}
|
||
|
|
|
||
|
|
//TODO: More configurable!
|
||
|
|
auto file_path = "files/server_" + to_string(ref_server->getServerId()) + "/conversations/conversation_" + to_string(channel_id) + ".cvs";
|
||
|
|
try {
|
||
|
|
fs::remove(fs::u8path(file_path));
|
||
|
|
} catch(fs::filesystem_error& error) {
|
||
|
|
logWarning(ref_server->getServerId(), "[Conversations][{}] Failed to delete data file ({}): {}|{}", channel_id, file_path, error.code().value(), error.what());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void ConversationManager::cleanup_channels() {
|
||
|
|
//TODO: Check if the channel for the conversation still exists!
|
||
|
|
}
|
||
|
|
|
||
|
|
void ConversationManager::cleanup_cache() {
|
||
|
|
unique_lock lock(this->_conversations_lock);
|
||
|
|
std::vector<std::shared_ptr<Conversation>> conversations{this->_conversations.begin(), this->_conversations.end()};
|
||
|
|
lock.unlock();
|
||
|
|
|
||
|
|
for(auto& conversation : conversations)
|
||
|
|
conversation->cleanup_cache();
|
||
|
|
}
|