adamdebreceni commented on code in PR #1367: URL: https://github.com/apache/nifi-minifi-cpp/pull/1367#discussion_r940174324
########## libminifi/src/core/logging/alert/AlertSink.cpp: ########## @@ -0,0 +1,267 @@ +/** + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "core/logging/alert/AlertSink.h" +#include "core/TypedValues.h" +#include "core/ClassLoader.h" +#include "utils/HTTPClient.h" +#include "utils/Hash.h" +#include "core/logging/Utils.h" + +#include "rapidjson/rapidjson.h" +#include "rapidjson/document.h" +#include "rapidjson/stringbuffer.h" +#include "rapidjson/writer.h" + +namespace org::apache::nifi::minifi::core::logging { + +AlertSink::AlertSink(Config config, std::shared_ptr<Logger> logger) + : config_(std::move(config)), + buffer_(config_.buffer_limit, config_.batch_size), + logger_(std::move(logger)) { + set_level(config_.level); + live_logs_.setLifetime(config_.rate_limit); + next_flush_ = clock_->timeSinceEpoch() + config_.flush_period; + flush_thread_ = std::thread([this] {run();}); +} + +std::shared_ptr<AlertSink> AlertSink::create(const std::string& prop_name_prefix, const std::shared_ptr<LoggerProperties>& logger_properties, std::shared_ptr<Logger> logger) { + Config config; + + if (auto url = logger_properties->getString(prop_name_prefix + ".url")) { + config.url = url.value(); + } else { + logger->log_info("Missing '%s.url' value, network logging won't be available", prop_name_prefix); + return {}; + } + + if (auto filter_str = logger_properties->getString(prop_name_prefix + ".filter")) { + try { + config.filter = filter_str.value(); + } catch (const std::regex_error& err) { + logger->log_error("Invalid '%s.filter' value, network logging won't be available: %s", prop_name_prefix, err.what()); + return {}; + } + } else { + logger->log_error("Missing '%s.filter' value, network logging won't be available", prop_name_prefix); + return {}; + } + + auto readPropertyOr = [&] (auto suffix, auto parser, auto fallback) { + if (auto prop_str = logger_properties->getString(prop_name_prefix + suffix)) { + if (auto prop_val = parser(prop_str.value())) { + return prop_val.value(); + } + logger->log_error("Invalid '%s' value, using default '%s'", prop_name_prefix + suffix, fallback); + } else { + logger->log_info("Missing '%s' value, using default '%s'", prop_name_prefix + suffix, fallback); + } + return parser(fallback).value(); + }; + + auto datasize_parser = [] (const std::string& str) -> std::optional<int> { + int val; + if (DataSizeValue::StringToInt(str, val)) { + return val; + } + return {}; + }; + + config.batch_size = readPropertyOr(".batch.size", datasize_parser, "100 KB"); + config.flush_period = readPropertyOr(".flush.period", TimePeriodValue::fromString, "5 s").getMilliseconds(); + config.rate_limit = readPropertyOr(".rate.limit", TimePeriodValue::fromString, "10 min").getMilliseconds(); + config.buffer_limit = readPropertyOr(".buffer.limit", datasize_parser, "1 MB"); + config.level = readPropertyOr(".level", utils::parse_log_level, "trace"); + config.ssl_service_name = logger_properties->getString(prop_name_prefix + ".ssl.context.service"); + + return std::make_shared<AlertSink>(std::move(config), std::move(logger)); +} + +void AlertSink::initialize(core::controller::ControllerServiceProvider* controller, std::shared_ptr<AgentIdentificationProvider> agent_id) { + auto services = std::make_unique<Services>(); + + services->agent_id = std::move(agent_id); + + if (config_.ssl_service_name) { + if (!controller) { + logger_->log_error("Could not find service '%s': no service provider", config_.ssl_service_name.value()); + return; + } + if (auto service = controller->getControllerService(config_.ssl_service_name.value())) { + if (auto ssl_service = std::dynamic_pointer_cast<controllers::SSLContextService>(service)) { + services->ssl_service = ssl_service; + } else { + logger_->log_error("Service '%s' is not an SSLContextService", config_.ssl_service_name.value()); + return; + } + } else { + logger_->log_error("Could not find service '%s'", config_.ssl_service_name.value()); + return; + } + } + + services.reset(services_.exchange(services.release())); +} + +void AlertSink::sink_it_(const spdlog::details::log_msg& msg) { + // this method is protected upstream in base_sink by a mutex + + std::match_results<std::string_view::const_iterator> match; + std::string_view payload(msg.payload.data(), msg.payload.size()); + if (!std::regex_match(payload.begin(), payload.end(), match, config_.filter)) { + return; + } + size_t hash = 0; + for (size_t idx = 1; idx < match.size(); ++idx) { + std::string_view submatch; + if (match[idx].first != match[idx].second) { + // TODO(adebreceni): std::string_view(It begin, It end) is not yet supported on all platforms + submatch = std::string_view(std::to_address(match[idx].first), std::distance(match[idx].first, match[idx].second)); + } + hash = utils::hash_combine(hash, std::hash<std::string_view>{}(submatch)); + } + if (!live_logs_.tryAdd(clock_->timeSinceEpoch(), hash)) { + return; + } + + spdlog::memory_buf_t formatted; + formatter_->format(msg, formatted); + + buffer_.modify([&] (LogBuffer& log_buf) { + log_buf.size_ += formatted.size(); + log_buf.data_.emplace_back(std::string{formatted.data(), formatted.size()}, hash); + }); +} + +void AlertSink::flush_() {} + +void AlertSink::run() { + while (running_) { + { + std::unique_lock lock(mtx_); + next_flush_ = clock_->wait_until(cv_, lock, next_flush_, [&] {return !running_;}) + config_.flush_period; + } + std::unique_ptr<Services> services(services_.exchange(nullptr)); + if (!services || !running_) { + continue; + } + try { + send(*services); + } catch (const std::exception& err) { + logger_->log_error("Exception while sending logs: %s", err.what()); + } catch (...) { + logger_->log_error("Unknown exception while sending logs"); + } + Services* expected{nullptr}; + // only restore the services pointer if no initialize set it to something else meanwhile + if (services_.compare_exchange_strong(expected, services.get())) { + (void)services.release(); + } + } +} + +AlertSink::~AlertSink() { + { + std::lock_guard lock(mtx_); + running_ = false; + cv_.notify_all(); + } + if (flush_thread_.joinable()) { + flush_thread_.join(); + } +} + +void AlertSink::send(Services& services) { + LogBuffer logs; + buffer_.commit(); + if (!buffer_.tryDequeue(logs)) { + return; + } + + auto client = core::ClassLoader::getDefaultClassLoader().instantiate<utils::BaseHTTPClient>("HTTPClient", "HTTPClient"); + if (!client) { + logger_->log_error("Could not instantiate a HTTPClient object"); + return; + } + client->initialize("PUT", config_.url, services.ssl_service); + + rapidjson::Document doc(rapidjson::kObjectType); + std::string agent_id = services.agent_id->getAgentIdentifier(); + doc.AddMember("agentId", rapidjson::Value(agent_id.data(), agent_id.length()), doc.GetAllocator()); + doc.AddMember("alerts", rapidjson::Value(rapidjson::kArrayType), doc.GetAllocator()); + for (const auto& [log, _] : logs.data_) { + doc["alerts"].PushBack(rapidjson::Value(log.data(), log.size()), doc.GetAllocator()); + } + rapidjson::StringBuffer buffer; + rapidjson::Writer<rapidjson::StringBuffer> writer(buffer); + doc.Accept(writer); + + auto data_input = std::make_unique<utils::ByteInputCallback>(); + auto data_cb = std::make_unique<utils::HTTPUploadCallback>(); + data_input->write(std::string(buffer.GetString(), buffer.GetSize())); + data_cb->ptr = data_input.get(); + client->setUploadCallback(data_cb.get()); + client->setContentType("application/json"); + + bool req_success = client->submit(); + + int64_t resp_code = client->getResponseCode(); + const bool client_err = 400 <= resp_code && resp_code < 500; + const bool server_err = 500 <= resp_code && resp_code < 600; + if (client_err || server_err) { + logger_->log_error("Error response code '" "%" PRId64 "' from '%s'", resp_code, config_.url); + } else { + logger_->log_debug("Response code '" "%" PRId64 "' from '%s'", resp_code, config_.url); Review Comment: added a new warning ########## libminifi/include/core/logging/alert/AlertSink.h: ########## @@ -0,0 +1,109 @@ +/** + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#pragma once + +#include <deque> +#include <mutex> +#include <unordered_set> +#include <regex> +#include <utility> +#include <string> +#include <memory> + +#include "controllers/SSLContextService.h" Review Comment: done -- This is an automated message from the Apache Git Service. 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