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 {
0031 public:
0032     mongo_sink(const std::string &db_name, const std::string &collection_name, const std::string &uri = "mongodb://localhost:27017")
0033     try : mongo_sink(std::make_shared<mongocxx::instance>(), db_name, collection_name, uri)
0034     {}
0035     catch (const std::exception &e)
0036     {
0037         throw_spdlog_ex(fmt_lib::format("Error opening database: {}", e.what()));
0038     }
0039
0040     mongo_sink(std::shared_ptr<mongocxx::instance> instance, const std::string &db_name, const std::string &collection_name,
0041         const std::string &uri = "mongodb://localhost:27017")
0042         : instance_(std::move(instance))
0043         , db_name_(db_name)
0044         , coll_name_(collection_name)
0045     {
0046         try
0047         {
0048             client_ = spdlog::details::make_unique<mongocxx::client>(mongocxx::uri{uri});
0049         }
0050         catch (const std::exception &e)
0051         {
0052             throw_spdlog_ex(fmt_lib::format("Error opening database: {}", e.what()));
0053         }
0054     }
0055
0056     ~mongo_sink()
0057     {
0058         flush_();
0059     }
0060
0061 protected:
0062     void sink_it_(const details::log_msg &msg) override
0063     {
0064         using bsoncxx::builder::stream::document;
0065         using bsoncxx::builder::stream::finalize;
0066
0067         if (client_ != nullptr)
0068         {
0069             auto doc = document{} << "timestamp" << bsoncxx::types::b_date(msg.time) << "level" << level::to_string_view(msg.level).data()
0070                                   << "level_num" << msg.level << "message" << std::string(msg.payload.begin(), msg.payload.end())
0071                                   << "logger_name" << std::string(msg.logger_name.begin(), msg.logger_name.end()) << "thread_id"
0072                                   << static_cast<int>(msg.thread_id) << finalize;
0073             client_->database(db_name_).collection(coll_name_).insert_one(doc.view());
0074         }
0075     }
0076
0077     void flush_() override {}
0078
0079 private:
0080     std::shared_ptr<mongocxx::instance> instance_;
0081     std::string db_name_;
0082     std::string coll_name_;
0083     std::unique_ptr<mongocxx::client> client_ = nullptr;
0084 };
0085
0086 #include "spdlog/details/null_mutex.h"
0087 #include <mutex>
0088 using mongo_sink_mt = mongo_sink<std::mutex>;
0089 using mongo_sink_st = mongo_sink<spdlog::details::null_mutex>;
0090
0091 } // namespace sinks
0092
0093 template<typename Factory = spdlog::synchronous_factory>
0094 inline std::shared_ptr<logger> mongo_logger_mt(const std::string &logger_name, const std::string &db_name,
0095     const std::string &collection_name, const std::string &uri = "mongodb://localhost:27017")
0096 {
0097     return Factory::template create<sinks::mongo_sink_mt>(logger_name, db_name, collection_name, uri);
0098 }
0099
0100 template<typename Factory = spdlog::synchronous_factory>
0101 inline std::shared_ptr<logger> mongo_logger_st(const std::string &logger_name, const std::string &db_name,
0102     const std::string &collection_name, const std::string &uri = "mongodb://localhost:27017")
0103 {
0104     return Factory::template create<sinks::mongo_sink_st>(logger_name, db_name, collection_name, uri);
0105 }
0106
0107 } // namespace spdlog