feat(liblogc): 统一集中式日志客户端库 + 全量迁移
新增: - liblogc/: C++ 统一日志库 (libus_logc.so)，支持 set_endpoint/set_service_name/set_level - pymsg/pymsg/logc.py: Python 统一日志模块，基于 AsyncRpcQueue C++ 迁移 (删除 6 份本地 LogC.hpp 副本): - ca, gateway: <us/LogC.hpp> + set_service_name - captcha2, confs2, smtp3: using qing::LogC + set_service_name - core: ConfsLogC → qing::LogC (ConfsTask.cpp) - 所有 Makefile 添加 -lus_logc Python 迁移 (6 个 log_client.py → 4 行薄包装): - smtp, redirect80, confs, captcha, dnfs, static - 全部委托到 pymsg.logc.LogClient Go (waf): 保持现状，自成体系
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/*
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* LogC.hpp — captcha2 异步日志客户端（简化版）
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*
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* 基于 libmsg AsyncQueue，异步批量推送日志到 db:8005 的 Logs 表。
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* - 内存队列 + 后台线程攒批（满 50 条或 2 秒 flush）
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* - fail-safe：db 不可用时静默丢弃
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* - API: info() / warning() / error()
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*/
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#pragma once
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#include <us/Msg.hpp>
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#include <us/AsyncQueue.hpp>
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#include <boost/json.hpp>
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#include <iostream>
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#include <string>
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#include <vector>
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#include <chrono>
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#include <cstdlib>
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#include <atomic>
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#include <unordered_map>
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namespace captcha2 {
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struct LogEntry {
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std::string ts;
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std::string service;
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std::string level;
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std::string message;
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std::string trace_id;
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std::string extra;
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};
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class LogC {
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public:
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// 日志级别 → 数值（大写兼容）
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static const std::unordered_map<std::string, int>& level_order() {
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static const std::unordered_map<std::string, int> k = {
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{"debug", 0}, {"info", 1}, {"warn", 2}, {"warning", 2},
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{"error", 3}, {"critical", 3},
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{"DEBUG", 0}, {"INFO", 1}, {"WARN", 2}, {"WARNING", 2},
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{"ERROR", 3}, {"CRITICAL", 3},
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};
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return k;
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}
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static LogC& instance() {
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static LogC inst;
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return inst;
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}
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// 设置日志级别阈值（debug|info|warn|error，大小写不限）
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// 低于此级别的日志在 push 时直接丢弃
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void set_level(const std::string& level) {
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auto it = level_order().find(level);
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if (it != level_order().end()) {
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level_threshold_.store(it->second, std::memory_order_relaxed);
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}
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}
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void info(const std::string& svc, const std::string& msg) {
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push(svc, "INFO", msg);
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}
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void warning(const std::string& svc, const std::string& msg) {
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push(svc, "WARNING", msg);
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}
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void error(const std::string& svc, const std::string& msg) {
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push(svc, "ERROR", msg);
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}
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private:
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LogC() {
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const char* host = std::getenv("DB_HOST");
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const char* port = std::getenv("DB_PORT");
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db_host_ = host ? host : "127.0.0.1";
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db_port_ = port ? std::atoi(port) : 8005;
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queue_ = std::make_unique<pmc::net::AsyncQueue<LogEntry>>(
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[this](std::vector<LogEntry>&& batch) { send_batch(std::move(batch)); },
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pmc::net::AsyncQueueConfig{.batch_size = 50, .flush_interval = 2.0, .max_queue_size = 10000},
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[](const std::exception& e, std::vector<LogEntry>&&) {
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std::cerr << "[captcha2/log] send failed: " << e.what() << std::endl;
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});
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queue_->start();
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}
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~LogC() { if (queue_) queue_->shutdown(); }
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void push(const std::string& svc, const std::string& level, const std::string& msg) {
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// 日志级别过滤：低于阈值直接丢弃
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auto it = level_order().find(level);
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int lvl = (it != level_order().end()) ? it->second : 1;
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if (lvl < level_threshold_.load(std::memory_order_relaxed)) return;
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auto now = std::chrono::system_clock::now();
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auto t = std::chrono::system_clock::to_time_t(now);
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char buf[32];
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std::strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%SZ", std::gmtime(&t));
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LogEntry e;
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e.ts = buf;
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e.service = svc;
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e.level = level;
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e.message = msg;
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queue_->push(std::move(e));
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}
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void send_batch(std::vector<LogEntry>&& batch) {
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try {
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// P3-4: 复用单连接发送整批日志，超时 1.0s（日志非关键路径，db2 慢时不阻塞 flush 线程过久）
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pmc::net::MsgClient client(db_host_, db_port_, "captcha2-log");
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for (auto& e : batch) {
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boost::json::object vals;
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vals["ts"] = e.ts;
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vals["service"] = e.service;
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vals["level"] = e.level;
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vals["message"] = e.message;
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vals["trace_id"] = e.trace_id.empty() ? nullptr : boost::json::value(e.trace_id);
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vals["extra"] = e.extra.empty() ? nullptr : boost::json::value(e.extra);
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boost::json::object req;
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req["_route"] = "execute";
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req["action"] = "insert";
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req["table"] = "Logs";
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req["values"] = vals;
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client.call(boost::json::serialize(req), 1.0);
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}
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} catch (const std::exception& e) {
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std::cerr << "[captcha2/log] batch drop: " << e.what() << std::endl;
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}
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}
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std::string db_host_;
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int db_port_;
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std::atomic<int> level_threshold_{1}; // 日志级别阈值，默认 INFO(1)
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std::unique_ptr<pmc::net::AsyncQueue<LogEntry>> queue_;
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};
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} // namespace captcha2
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