ceph/src/boost/libs/log/example/doc/sinks_ipc_logger.cpp

   1 /*
   2  *                Copyright Lingxi Li 2015.
   3  *             Copyright Andrey Semashev 2016.
   4  * Distributed under the Boost Software License, Version 1.0.
   5  *    (See accompanying file LICENSE_1_0.txt or copy at
   6  *          http://www.boost.org/LICENSE_1_0.txt)
   7  */
   8
   9 #include <iostream>
  10 #include <sstream>
  11 #include <exception>
  12 #include <boost/smart_ptr/shared_ptr.hpp>
  13 #include <boost/smart_ptr/make_shared_object.hpp>
  14 #include <boost/date_time/posix_time/posix_time.hpp>
  15 #include <boost/log/core.hpp>
  16 #include <boost/log/attributes.hpp>
  17 #include <boost/log/expressions.hpp>
  18 #include <boost/log/sources/logger.hpp>
  19 #include <boost/log/sources/record_ostream.hpp>
  20 #include <boost/log/sinks/sync_frontend.hpp>
  21 #include <boost/log/sinks/text_ipc_message_queue_backend.hpp>
  22 #include <boost/log/utility/ipc/reliable_message_queue.hpp>
  23 #include <boost/log/utility/ipc/object_name.hpp>
  24 #include <boost/log/utility/open_mode.hpp>
  25 #include <boost/log/utility/setup/common_attributes.hpp>
  26
  27 namespace logging = boost::log;
  28 namespace expr = boost::log::expressions;
  29 namespace attrs = boost::log::attributes;
  30 namespace src = boost::log::sources;
  31 namespace sinks = boost::log::sinks;
  32 namespace keywords = boost::log::keywords;
  33
  34 //[ example_sinks_ipc_logger
  35 BOOST_LOG_ATTRIBUTE_KEYWORD(a_timestamp, "TimeStamp", attrs::local_clock::value_type)
  36 BOOST_LOG_ATTRIBUTE_KEYWORD(a_process_id, "ProcessID", attrs::current_process_id::value_type)
  37 BOOST_LOG_ATTRIBUTE_KEYWORD(a_thread_id, "ThreadID", attrs::current_thread_id::value_type)
  38
  39 int main()
  40 {
  41     try
  42     {
  43         typedef logging::ipc::reliable_message_queue queue_t;
  44         typedef sinks::text_ipc_message_queue_backend< queue_t > backend_t;
  45         typedef sinks::synchronous_sink< backend_t > sink_t;
  46
  47         // Create a sink that is associated with the interprocess message queue
  48         // named "ipc_message_queue".
  49         boost::shared_ptr< sink_t > sink = boost::make_shared< sink_t >
  50         (
  51             keywords::name = logging::ipc::object_name(logging::ipc::object_name::user, "ipc_message_queue"),
  52             keywords::open_mode = logging::open_mode::open_or_create,
  53             keywords::capacity = 256,
  54             keywords::block_size = 1024,
  55             keywords::overflow_policy = queue_t::block_on_overflow
  56         );
  57
  58         // Set the formatter
  59         sink->set_formatter
  60         (
  61             expr::stream << "[" << a_timestamp << "] [" << a_process_id << ":" << a_thread_id << "] " << expr::smessage
  62         );
  63
  64         logging::core::get()->add_sink(sink);
  65
  66         // Add the commonly used attributes, including TimeStamp, ProcessID and ThreadID
  67         logging::add_common_attributes();
  68
  69         // Do some logging
  70         src::logger logger;
  71         for (unsigned int i = 1; i <= 10; ++i)
  72         {
  73             BOOST_LOG(logger) << "Message #" << i;
  74         }
  75     }
  76     catch (std::exception& e)
  77     {
  78         std::cout << "Failure: " << e.what() << std::endl;
  79     }
  80
  81     return 0;
  82 }
  83 //]