adamdebreceni commented on a change in pull request #937: URL: https://github.com/apache/nifi-minifi-cpp/pull/937#discussion_r534001123
########## File path: libminifi/src/c2/C2Client.cpp ########## @@ -0,0 +1,318 @@ +/** + * + * 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 <memory> +#include <map> +#include "c2/C2Client.h" +#include "core/state/nodes/MetricsBase.h" +#include "core/state/nodes/QueueMetrics.h" +#include "core/state/nodes/AgentInformation.h" +#include "core/state/nodes/RepositoryMetrics.h" +#include "properties/Configure.h" +#include "core/state/UpdateController.h" +#include "core/controller/ControllerServiceProvider.h" +#include "c2/C2Agent.h" +#include "core/state/nodes/FlowInformation.h" +#include "utils/file/FileSystem.h" + +namespace org { +namespace apache { +namespace nifi { +namespace minifi { +namespace c2 { + +C2Client::C2Client( + std::shared_ptr<Configure> configuration, std::shared_ptr<core::Repository> provenance_repo, + std::shared_ptr<core::Repository> flow_file_repo, std::shared_ptr<core::ContentRepository> content_repo, + std::unique_ptr<core::FlowConfiguration> flow_configuration, std::shared_ptr<utils::file::FileSystem> filesystem, + std::shared_ptr<logging::Logger> logger) + : core::Flow(std::move(provenance_repo), std::move(flow_file_repo), std::move(content_repo), std::move(flow_configuration)), + configuration_(std::move(configuration)), + filesystem_(std::move(filesystem)), + logger_(std::move(logger)) {} + +void C2Client::stopC2() { + if (c2_agent_) { + c2_agent_->stop(); + } +} + +bool C2Client::isC2Enabled() const { + std::string c2_enable_str; + configuration_->get(Configure::nifi_c2_enable, "c2.enable", c2_enable_str); + return utils::StringUtils::toBool(c2_enable_str).value_or(false); +} + +void C2Client::initialize(core::controller::ControllerServiceProvider *controller, const std::shared_ptr<state::StateMonitor> &update_sink) { + std::string class_str; + configuration_->get("nifi.c2.agent.class", "c2.agent.class", class_str); + configuration_->setAgentClass(class_str); + + if (!isC2Enabled()) { + return; + } + + if (class_str.empty()) { + logger_->log_error("Class name must be defined when C2 is enabled"); + throw std::runtime_error("Class name must be defined when C2 is enabled"); + } + + std::string identifier_str; + if (!configuration_->get("nifi.c2.agent.identifier", "c2.agent.identifier", identifier_str) || identifier_str.empty()) { + // set to the flow controller's identifier + identifier_str = getControllerUUID().to_string(); + } + configuration_->setAgentIdentifier(identifier_str); + + if (initialized_ && !flow_update_) { + return; + } + + { + std::lock_guard<std::mutex> guard(metrics_mutex_); + component_metrics_.clear(); + // root_response_nodes_ was not cleared before, it is unclear if that was intentional + } + + std::map<std::string, std::shared_ptr<Connection>> connections; + if (root_ != nullptr) { + root_->getConnections(connections); + } + + std::string class_csv; + if (configuration_->get("nifi.c2.root.classes", class_csv)) { + std::vector<std::string> classes = utils::StringUtils::split(class_csv, ","); + + for (const std::string& clazz : classes) { + auto processor = std::dynamic_pointer_cast<state::response::ResponseNode>(core::ClassLoader::getDefaultClassLoader().instantiate(clazz, clazz)); + if (nullptr == processor) { + logger_->log_error("No metric defined for %s", clazz); + continue; + } + auto identifier = std::dynamic_pointer_cast<state::response::AgentIdentifier>(processor); + if (identifier != nullptr) { + identifier->setIdentifier(identifier_str); + identifier->setAgentClass(class_str); + } + auto monitor = std::dynamic_pointer_cast<state::response::AgentMonitor>(processor); + if (monitor != nullptr) { + monitor->addRepository(provenance_repo_); + monitor->addRepository(flow_file_repo_); + monitor->setStateMonitor(update_sink); + } + auto flowMonitor = std::dynamic_pointer_cast<state::response::FlowMonitor>(processor); + if (flowMonitor != nullptr) { + for (auto &con : connections) { + flowMonitor->addConnection(con.second); + } + flowMonitor->setStateMonitor(update_sink); + flowMonitor->setFlowVersion(flow_configuration_->getFlowVersion()); + } + std::lock_guard<std::mutex> guard(metrics_mutex_); + root_response_nodes_[processor->getName()] = processor; + } + } + + // get all component metrics + if (root_ != nullptr) { + std::vector<std::shared_ptr<core::Processor>> processors; + root_->getAllProcessors(processors); + for (const auto &processor : processors) { + auto rep = std::dynamic_pointer_cast<state::response::ResponseNodeSource>(processor); + // we have a metrics source. + if (nullptr != rep) { + std::vector<std::shared_ptr<state::response::ResponseNode>> metric_vector; + rep->getResponseNodes(metric_vector); + std::lock_guard<std::mutex> guard(metrics_mutex_); + for (auto& metric : metric_vector) { + component_metrics_[metric->getName()] = metric; + } + } + } + } Review comment: moved into a separate method ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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