GNATcoll Bindings - SyslogΒΆ

Among the predefined streams, GNATColl gives access to the system logger syslog. This is a standard utility on all Unix systems, but is not available on other systems.

Activating support for syslog requires the following call in your application:

GNATCOLL.Traces.Syslog.Register_Syslog_Stream;

After the above call, trace handles can be redirected to a stream named "syslog".

The package GNATCOLL.Traces.Syslog also contains a low-level interface to syslog, which, although fully functional, you should probably not use, since that would make your code system-dependent.

Syslog itself dispatches its output based on two criteria: the facility, which indicates what application emitted the message, and where it should be filed, and the level which indicates the urgency level of the message. Both of these criteria can be specified in the GNATCOLL.Traces configuration file, as follows:

MODULE=yes >&syslog:user:error

The above configuration will redirect to a facility called user, with an urgency level error. See the enumeration types in gnatcoll-traces-syslog.ads for more information on valid facilities and levels.