Re: [Boost-users] [Log 2.0] rotating files size limiation

Subject: Re: [Boost-users] [Log 2.0] rotating files size limiation
From: Ovanes Markarian (om_boost_at_[hidden])
Date: 2014-01-13 07:29:47

Ok, found it out:

    keywords::target
is the fully qualified directory path where to store rotated logs, so it
must be smth like:

    /var/log/dir-to-app

Than the limitation works as expected.

On Mon, Jan 13, 2014 at 1:05 PM, Ovanes Markarian <om_boost_at_[hidden]>wrote:

> Hello *,
>
> I am a bit stuck to implement a very simple scenario with boost log. I
> need to limit the size of entire rotation log.
>
> My current logger configuration looks like that:
>
> void setup_logging( channel_settings_t const& settings
>                     , std::string const& log_file
>                     , std::string const& log_level
>                     )
>   {
>     config_logger_attributes(logging::core::get(), settings, log_level);
>
>     using namespace logging::aux::default_attribute_names;
>
>     //add logging to file (which implicitly deletes the default console
> logger)
>     logging::add_file_log
>     (
>       keywords::auto_flush = true,
>       keywords::open_mode = std::ios::out | std::ios::app,
>       keywords::file_name = log_file+"_%N.log",
>       keywords::rotation_size = 50 * 1024, // Just for test limit to 50K
>       keywords::format = //"%TimeStamp%: [%Channel%] |ThreadId|
> <%Severity%> %Message%"
>         expr::format("%1% : [%2%] |%3%| <%4%> %5%")
>         % expr::attr< boost::posix_time::ptime >(timestamp())
>         % expr::attr<std::string>(channel())
>         % expr::attr<attrs::current_thread_id::value_type>(thread_id())
>         % trivial::severity
>         % expr::smessage
>     )->locked_backend()->set_file_collector
>        ( sinks::file::make_collector
>          ( keywords::target = "logs"
>          , keywords::max_size = 200 * 1024 // just for test limit to 200K
>          )
>        )
>     ;
>   }
>
> Unfortunately, I can't find what the target keyword means, despite the
> fact that it is a target directory. Target directory relating to smth or
> should there be a full path? Should this target directory exist? I did a
> test and rotating log files just grow upon the 200K limit.
>
> I just want to have let's say 3 or 4 last rotated log files, the rest
> should be removed? We already ran into the situation, where the logger used
> all disc space and the server crashed :(
>
>
> Any help if very appreciated!
>
> Thanks,
> Ovanes
>