spdlog/sinks/mongo_sink.h

0001 // Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
0002 // Distributed under the MIT License (http://opensource.org/licenses/MIT)
0003
0004 #pragma once
0005
0006 //
0007 // Custom sink for mongodb
0008 // Building and using requires mongocxx library.
0009 // For building mongocxx library check the url below
0010 // http://mongocxx.org/mongocxx-v3/installation/
0011 //
0012
0013 #include "spdlog/common.h"
0014 #include "spdlog/details/log_msg.h"
0015 #include "spdlog/sinks/base_sink.h"
0016 #include <spdlog/details/synchronous_factory.h>
0017
0018 #include <bsoncxx/builder/stream/document.hpp>
0019 #include <bsoncxx/types.hpp>
0020 #include <bsoncxx/view_or_value.hpp>
0021
0022 #include <mongocxx/client.hpp>
0023 #include <mongocxx/instance.hpp>
0024 #include <mongocxx/uri.hpp>
0025
0026 namespace spdlog {
0027 namespace sinks {
0028 template <typename Mutex>
0029 class mongo_sink : public base_sink<Mutex> {
0030 public:
0031     mongo_sink(const std::string &db_name,
0032                const std::string &collection_name,
0033                const std::string &uri = "mongodb://localhost:27017") try
0034         : mongo_sink(std::make_shared<mongocxx::instance>(), db_name, collection_name, uri) {
0035     } catch (const std::exception &e) {
0036         throw_spdlog_ex(fmt_lib::format("Error opening database: {}", e.what()));
0037     }
0038
0039     mongo_sink(std::shared_ptr<mongocxx::instance> instance,
0040                const std::string &db_name,
0041                const std::string &collection_name,
0042                const std::string &uri = "mongodb://localhost:27017")
0043         : instance_(std::move(instance)),
0044           db_name_(db_name),
0045           coll_name_(collection_name) {
0046         try {
0047             client_ = spdlog::details::make_unique<mongocxx::client>(mongocxx::uri{uri});
0048         } catch (const std::exception &e) {
0049             throw_spdlog_ex(fmt_lib::format("Error opening database: {}", e.what()));
0050         }
0051     }
0052
0053     ~mongo_sink() { flush_(); }
0054
0055 protected:
0056     void sink_it_(const details::log_msg &msg) override {
0057         using bsoncxx::builder::stream::document;
0058         using bsoncxx::builder::stream::finalize;
0059
0060         if (client_ != nullptr) {
0061             auto doc = document{} << "timestamp" << bsoncxx::types::b_date(msg.time) << "level"
0062                                   << level::to_string_view(msg.level).data() << "level_num"
0063                                   << msg.level << "message"
0064                                   << std::string(msg.payload.begin(), msg.payload.end())
0065                                   << "logger_name"
0066                                   << std::string(msg.logger_name.begin(), msg.logger_name.end())
0067                                   << "thread_id" << static_cast<int>(msg.thread_id) << finalize;
0068             client_->database(db_name_).collection(coll_name_).insert_one(doc.view());
0069         }
0070     }
0071
0072     void flush_() override {}
0073
0074 private:
0075     std::shared_ptr<mongocxx::instance> instance_;
0076     std::string db_name_;
0077     std::string coll_name_;
0078     std::unique_ptr<mongocxx::client> client_ = nullptr;
0079 };
0080
0081 #include "spdlog/details/null_mutex.h"
0082 #include <mutex>
0083 using mongo_sink_mt = mongo_sink<std::mutex>;
0084 using mongo_sink_st = mongo_sink<spdlog::details::null_mutex>;
0085
0086 }  // namespace sinks
0087
0088 template <typename Factory = spdlog::synchronous_factory>
0089 inline std::shared_ptr<logger> mongo_logger_mt(
0090     const std::string &logger_name,
0091     const std::string &db_name,
0092     const std::string &collection_name,
0093     const std::string &uri = "mongodb://localhost:27017") {
0094     return Factory::template create<sinks::mongo_sink_mt>(logger_name, db_name, collection_name,
0095                                                           uri);
0096 }
0097
0098 template <typename Factory = spdlog::synchronous_factory>
0099 inline std::shared_ptr<logger> mongo_logger_st(
0100     const std::string &logger_name,
0101     const std::string &db_name,
0102     const std::string &collection_name,
0103     const std::string &uri = "mongodb://localhost:27017") {
0104     return Factory::template create<sinks::mongo_sink_st>(logger_name, db_name, collection_name,
0105                                                           uri);
0106 }
0107
0108 }  // namespace spdlog