NAME

 Fault::Delegate::Stderr - Stderr print logger delegate.

SYNOPSIS

 use Fault::Delegate::Stderr;
 $self = Fault::Delegate::Stderr->new;
 $okay = $self->log ($msg);
 $bool = $self->test;

Inheritance

 UNIVERSAL
   Fault::Delegate
     Fault::Delegate::Stderr

Description

This is a Logger delegate that writes all the log messages to stderr. It is Logger's default delegate if no other is given. It is also a pretty good one to start with when you are trying to understand how this system works.

It satisfies the absolute minimum requirements of the Fault::Delegate logger delegate protocol.

Examples

 use Fault::Delegate::Stderr;
 use Fault::Logger;
 use Fault::Msg;

 my $msg       = Fault::Msg                   ("Arf!");
 my $baz       = Fault::Delegate::Stderr->new ("/tmp/mylogfile");
 my $waslogged = $baz->log                    ($msg);

                 Fault::Logger->new           ($baz);
 my $waslogged = Fault::Logger->log           ("Bow! Wow!");

Instance Variables

None.

Class Methods

$delegate = Fault::Delegate::Stderr->new

Create a logger delegate object that prints log messages to stderr. Prints a warning message and returns undef on failure.

Logger Protocol Instance Methods

$okay = $self->log ($msg)

Print a time-stamped message to stderr using information taken from Fault::Msg object $msg in the format:

      $date $time UTC> $process: $type($priority): $msg\n

for example:

      20021207 223010 UTC> MyProcess: NOTE(notice): Nothing happened today.\n

Return true if the message was printed.

Private Class Methods

None.

Private Instance Methods

$bool = $self->test

If the debug level has been set to at least one in Fault::DebugPrinter, it executes the test method of the parent, Fault::Delegate class. Otherwise it always returns true. This was added so that an annoying initial message from the Fault system will not be printed on a terminal unless it is actually wanted for debugging purposees.

$bool = $self->_write ($msg)

Impliments the above override to the internal family protocol utilized by the Fault:Delegate log and test methods.

Errors and Warnings

Local warning messages are issued if the sys logger cannot be reached or has any problems whatever.

KNOWN BUGS

 See TODO.

SEE ALSO

Fault::Logger, Fault::Delegate, Fault::Msg

AUTHOR

Dale Amon <amon@vnl.com>