368 lines
14 KiB
C++
368 lines
14 KiB
C++
#include <atomic>
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#include <chrono>
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#include <iostream>
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#include <memory>
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#include <mutex>
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#include <thread>
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#include <vector>
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#include "node.h"
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#include "rule_engine.h"
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#include "frame_ring_buffer.h"
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#include "actions/action_base.h"
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#include "actions/log_action.h"
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#include "actions/http_action.h"
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#include "actions/snapshot_action.h"
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#include "actions/clip_action.h"
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namespace rk3588 {
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class AlarmNode : public INode {
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private:
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struct AlarmJob {
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AlarmEvent event;
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std::shared_ptr<Frame> frame;
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};
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public:
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std::string Id() const override { return id_; }
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std::string Type() const override { return "alarm"; }
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bool Init(const SimpleJson& config, const NodeContext& ctx) override {
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id_ = config.ValueOr<std::string>("id", "alarm");
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// Parse labels for class name mapping
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if (const SimpleJson* labels_cfg = config.Find("labels")) {
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for (const auto& label : labels_cfg->AsArray()) {
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labels_.push_back(label.AsString(""));
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}
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}
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// Initialize rule engine
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if (const SimpleJson* rules_cfg = config.Find("rules")) {
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if (!rule_engine_.Init(*rules_cfg, labels_)) {
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std::cerr << "[alarm] failed to init rule engine\n";
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return false;
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}
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}
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// Get pre/post buffer settings from clip action config
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int pre_sec = 5;
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int post_sec = 0;
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int fps_hint = 25;
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if (const SimpleJson* actions_cfg = config.Find("actions")) {
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if (const SimpleJson* clip_cfg = actions_cfg->Find("clip")) {
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pre_sec = clip_cfg->ValueOr<int>("pre_sec", 5);
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post_sec = clip_cfg->ValueOr<int>("post_sec", 0);
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fps_hint = clip_cfg->ValueOr<int>("fps", 25);
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}
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}
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frame_buffer_ = std::make_shared<FrameRingBuffer>(pre_sec, post_sec, fps_hint);
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// Alarm worker queue (avoid blocking Process())
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size_t alarm_q_size = 32;
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QueueDropStrategy alarm_q_strategy = QueueDropStrategy::DropOldest;
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if (const SimpleJson* q = config.Find("event_queue")) {
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if (q->IsObject()) {
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alarm_q_size = static_cast<size_t>(q->ValueOr<int>("size", static_cast<int>(alarm_q_size)));
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const std::string strat = q->ValueOr<std::string>("strategy", "drop_oldest");
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if (strat == "drop_newest") alarm_q_strategy = QueueDropStrategy::DropNewest;
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else if (strat == "block") alarm_q_strategy = QueueDropStrategy::Block;
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else alarm_q_strategy = QueueDropStrategy::DropOldest;
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}
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}
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alarm_queue_size_ = alarm_q_size;
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alarm_queue_strategy_ = alarm_q_strategy;
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alarm_queue_ = std::make_shared<SpscQueue<AlarmJob>>(alarm_queue_size_, alarm_queue_strategy_);
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// Initialize actions
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if (const SimpleJson* actions_cfg = config.Find("actions")) {
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// Log action
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if (const SimpleJson* log_cfg = actions_cfg->Find("log")) {
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if (log_cfg->ValueOr<bool>("enable", true)) {
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auto action = std::make_unique<LogAction>();
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if (action->Init(*log_cfg)) {
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actions_.push_back(std::move(action));
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}
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}
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}
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// Snapshot action (must be before HTTP to fill snapshot_url)
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if (const SimpleJson* snap_cfg = actions_cfg->Find("snapshot")) {
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if (snap_cfg->ValueOr<bool>("enable", false)) {
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auto action = std::make_unique<SnapshotAction>();
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if (action->Init(*snap_cfg)) {
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actions_.push_back(std::move(action));
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}
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}
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}
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// Clip action (must be before HTTP to fill clip_url)
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if (const SimpleJson* clip_cfg = actions_cfg->Find("clip")) {
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if (clip_cfg->ValueOr<bool>("enable", false)) {
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auto action = std::make_unique<ClipAction>();
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if (action->Init(*clip_cfg)) {
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auto* clip_ptr = static_cast<ClipAction*>(action.get());
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clip_ptr->SetFrameBuffer(frame_buffer_);
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actions_.push_back(std::move(action));
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}
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}
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}
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// HTTP action (should be last to include media URLs)
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if (const SimpleJson* http_cfg = actions_cfg->Find("http")) {
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if (http_cfg->ValueOr<bool>("enable", false)) {
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auto action = std::make_unique<HttpAction>();
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if (action->Init(*http_cfg)) {
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actions_.push_back(std::move(action));
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}
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}
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}
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} else {
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// Default: just log action
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auto action = std::make_unique<LogAction>();
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SimpleJson empty_cfg;
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action->Init(empty_cfg);
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actions_.push_back(std::move(action));
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}
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input_queue_ = ctx.input_queue;
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if (!input_queue_) {
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std::cerr << "[alarm] no input queue for node " << id_ << "\n";
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return false;
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}
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std::cout << "[alarm] initialized with " << actions_.size() << " actions\n";
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return true;
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}
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bool Start() override {
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worker_running_.store(true);
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worker_ = std::thread(&AlarmNode::WorkerLoop, this);
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std::cout << "[alarm] started\n";
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return true;
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}
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void Stop() override {
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worker_running_.store(false);
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if (alarm_queue_) alarm_queue_->Stop();
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if (worker_.joinable()) worker_.join();
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// Ensure all actions fully stop (Drain only clears pending work; Stop must reclaim threads/resources).
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for (auto& action : actions_) action->Drain();
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for (auto& action : actions_) action->Stop();
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std::cout << "[alarm] stopped, processed " << processed_frames_
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<< " frames, triggered " << alarm_count_ << " alarms\n";
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}
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void Drain() override {
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// First drain alarm jobs (so snapshot/clip are finished before draining HTTP queue).
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while (alarm_queue_ && (alarm_queue_->Size() > 0 || in_flight_.load() > 0)) {
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std::this_thread::sleep_for(std::chrono::milliseconds(50));
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}
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for (auto& action : actions_) action->Drain();
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}
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bool UpdateConfig(const SimpleJson& new_config) override {
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const std::string new_id = new_config.ValueOr<std::string>("id", id_);
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if (!new_id.empty() && new_id != id_) {
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return false;
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}
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// Parse labels
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std::vector<std::string> new_labels;
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if (const SimpleJson* labels_cfg = new_config.Find("labels")) {
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for (const auto& label : labels_cfg->AsArray()) {
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new_labels.push_back(label.AsString(""));
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}
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}
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// Build new rule engine
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RuleEngine new_engine;
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if (const SimpleJson* rules_cfg = new_config.Find("rules")) {
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if (!new_engine.Init(*rules_cfg, new_labels)) {
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return false;
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}
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}
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// Pre/post buffer settings
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int pre_sec = 5;
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int post_sec = 0;
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int fps_hint = 25;
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if (const SimpleJson* actions_cfg = new_config.Find("actions")) {
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if (const SimpleJson* clip_cfg = actions_cfg->Find("clip")) {
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pre_sec = clip_cfg->ValueOr<int>("pre_sec", 5);
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post_sec = clip_cfg->ValueOr<int>("post_sec", 0);
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fps_hint = clip_cfg->ValueOr<int>("fps", 25);
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}
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}
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auto new_frame_buffer = std::make_shared<FrameRingBuffer>(pre_sec, post_sec, fps_hint);
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// Initialize new actions
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std::vector<std::unique_ptr<IAlarmAction>> new_actions;
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if (const SimpleJson* actions_cfg = new_config.Find("actions")) {
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if (const SimpleJson* log_cfg = actions_cfg->Find("log")) {
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if (log_cfg->ValueOr<bool>("enable", true)) {
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auto action = std::make_unique<LogAction>();
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if (action->Init(*log_cfg)) {
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new_actions.push_back(std::move(action));
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}
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}
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}
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if (const SimpleJson* snap_cfg = actions_cfg->Find("snapshot")) {
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if (snap_cfg->ValueOr<bool>("enable", false)) {
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auto action = std::make_unique<SnapshotAction>();
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if (action->Init(*snap_cfg)) {
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new_actions.push_back(std::move(action));
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}
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}
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}
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if (const SimpleJson* clip_cfg = actions_cfg->Find("clip")) {
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if (clip_cfg->ValueOr<bool>("enable", false)) {
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auto action = std::make_unique<ClipAction>();
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if (action->Init(*clip_cfg)) {
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auto* clip_ptr = static_cast<ClipAction*>(action.get());
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clip_ptr->SetFrameBuffer(new_frame_buffer);
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new_actions.push_back(std::move(action));
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}
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}
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}
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if (const SimpleJson* http_cfg = actions_cfg->Find("http")) {
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if (http_cfg->ValueOr<bool>("enable", false)) {
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auto action = std::make_unique<HttpAction>();
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if (action->Init(*http_cfg)) {
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new_actions.push_back(std::move(action));
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}
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}
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}
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}
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if (new_actions.empty()) {
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auto action = std::make_unique<LogAction>();
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SimpleJson empty_cfg;
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if (action->Init(empty_cfg)) {
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new_actions.push_back(std::move(action));
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}
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}
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// Stop worker thread to avoid executing actions while swapping.
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std::shared_ptr<SpscQueue<AlarmJob>> old_queue;
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std::thread old_worker;
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{
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std::lock_guard<std::mutex> lock(mu_);
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worker_running_.store(false);
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old_queue = alarm_queue_;
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old_worker = std::move(worker_);
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}
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if (old_queue) old_queue->Stop();
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if (old_worker.joinable()) old_worker.join();
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std::vector<std::unique_ptr<IAlarmAction>> old_actions;
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{
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std::lock_guard<std::mutex> lock(mu_);
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labels_ = std::move(new_labels);
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rule_engine_ = std::move(new_engine);
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frame_buffer_ = std::move(new_frame_buffer);
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old_actions = std::move(actions_);
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actions_ = std::move(new_actions);
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in_flight_.store(0);
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alarm_queue_ = std::make_shared<SpscQueue<AlarmJob>>(alarm_queue_size_, alarm_queue_strategy_);
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worker_running_.store(true);
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worker_ = std::thread(&AlarmNode::WorkerLoop, this);
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}
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for (auto& action : old_actions) action->Drain();
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for (auto& action : old_actions) action->Stop();
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return true;
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}
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bool GetCustomMetrics(SimpleJson& out) const override {
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std::lock_guard<std::mutex> lock(mu_);
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SimpleJson::Object o;
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o["alarm_total"] = SimpleJson(static_cast<double>(alarm_count_));
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o["processed"] = SimpleJson(static_cast<double>(processed_frames_));
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out = SimpleJson(std::move(o));
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return true;
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}
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NodeStatus Process(FramePtr frame) override {
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if (!frame) return NodeStatus::DROP;
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std::lock_guard<std::mutex> lock(mu_);
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if (frame_buffer_) {
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using namespace std::chrono;
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const uint64_t ts_ms = static_cast<uint64_t>(duration_cast<milliseconds>(steady_clock::now().time_since_epoch()).count());
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frame_buffer_->Push(frame, ts_ms);
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}
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auto result = rule_engine_.Evaluate(frame);
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if (result.matched) TriggerAlarm(result, frame);
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++processed_frames_;
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return NodeStatus::OK;
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}
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private:
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void WorkerLoop() {
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while (worker_running_.load()) {
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AlarmJob job;
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if (!alarm_queue_) {
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std::this_thread::sleep_for(std::chrono::milliseconds(50));
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continue;
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}
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if (!alarm_queue_->Pop(job, std::chrono::milliseconds(100))) {
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continue;
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}
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in_flight_.fetch_add(1);
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for (auto& action : actions_) {
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action->Execute(job.event, job.frame);
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}
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in_flight_.fetch_sub(1);
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}
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}
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void TriggerAlarm(const RuleMatchResult& result, FramePtr frame) {
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++alarm_count_;
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AlarmEvent event;
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event.node_id = id_;
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event.rule_name = result.rule_name;
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event.timestamp_ms = std::chrono::duration_cast<std::chrono::milliseconds>(
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std::chrono::system_clock::now().time_since_epoch()).count();
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event.frame_id = frame->frame_id;
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event.detections = result.matched_detections;
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AlarmJob job;
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job.event = std::move(event);
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job.frame = std::move(frame);
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if (alarm_queue_) {
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alarm_queue_->Push(std::move(job));
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}
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}
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std::string id_;
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std::vector<std::string> labels_;
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RuleEngine rule_engine_;
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std::shared_ptr<FrameRingBuffer> frame_buffer_;
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std::vector<std::unique_ptr<IAlarmAction>> actions_;
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mutable std::mutex mu_;
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std::shared_ptr<SpscQueue<AlarmJob>> alarm_queue_;
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size_t alarm_queue_size_ = 32;
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QueueDropStrategy alarm_queue_strategy_ = QueueDropStrategy::DropOldest;
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std::atomic<bool> worker_running_{false};
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std::thread worker_;
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std::atomic<size_t> in_flight_{0};
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std::shared_ptr<SpscQueue<FramePtr>> input_queue_;
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uint64_t processed_frames_ = 0;
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uint64_t alarm_count_ = 0;
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};
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REGISTER_NODE(AlarmNode, "alarm");
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} // namespace rk3588
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