NAME

Log::Any::For::Class - Add logging to class

VERSION

This document describes version 0.27 of Log::Any::For::Class (from Perl distribution Log-Any-For-Class), released on 2015-09-03.

SYNOPSIS

 use Log::Any::For::Class qw(add_logging_to_class);
 add_logging_to_class(classes => [qw/My::Class My::SubClass/]);
 # now method calls to your classes are logged, by default at level 'trace'

DESCRIPTION

Most of the things that apply to Log::Any::For::Package also applies to this module, since this module uses add_logging_to_package() as its backend.

FUNCTIONS

add_logging_to_class(%args) -> any

Add logging to class.

Logging will be done using Log::Any.

Currently this function adds logging around method calls, e.g.:

 -> Class::method(...)
 <- Class::method() = RESULT
 ...

Arguments ('*' denotes required arguments):

• classes* => array[str]

  Classes to add logging to.

• filter_methods => array[str]

  Filter methods to add logging to.

  The default is to add logging to all non-private methods. Private methods are those prefixed by _.

• import_hook => bool (default: 0)

  Whether to install import (@INC) hook instead.

  If this setting is true, then instead of installing logging to all existing packages, an @INC import hook will be installed instead so that subsequent modules that are loaded and that match packages will be logged. So to log all subsequent loaded modules, you can set packages to ['.*'].

• logger_args => any

  Pass arguments to logger.

  This allows passing arguments to logger routine.

• postcall_logger => code

  Supply custom postcall logger.

  Just like precall_logger, but code will be called after subroutine/method is called. Code will be given a hashref argument \%args containing these keys: args (arrayref, a shallow copy of the original @_), orig (coderef, the original subroutine/method), name (string, the fully-qualified subroutine/method name), result (arrayref, the subroutine/method result), logger_args (arguments given when adding logging).

  You can use this mechanism to customize logging.

• precall_logger => code

  Supply custom precall logger.

  Code will be called when logging subroutine/method call. Code will be given a hashref argument \%args containing these keys: args (arrayref, a shallow copy of the original @_), orig (coderef, the original subroutine/method), name (string, the fully-qualified subroutine/method name), logger_args (arguments given when adding logging).

  You can use this mechanism to customize logging.

  The default logger accepts these arguments (can be supplied via logger_args):

  • indent => INT (default: 0)

  Indent according to nesting level.

  • max_depth => INT (default: -1)

  Only log to this nesting level. -1 means unlimited.

  • log_sub_args => BOOL (default: 1)

  Whether to display subroutine arguments when logging subroutine entry. The default can also be supplied via environment LOG_SUB_ARGS.

  • log_sub_result => BOOL (default: 1)

  Whether to display subroutine result when logging subroutine exit. The default can also be set via environment LOG_SUB_RESULT.

Return value: (any)

SEE ALSO

Log::Any::For::Package

Log::Any::For::DBI, an application of this module.

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/Log-Any-For-Class.

SOURCE

Source repository is at https://github.com/perlancar/perl-Log-Any-For-Class.

BUGS

Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=Log-Any-For-Class

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.

AUTHOR

perlancar <perlancar@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2015 by perlancar@cpan.org.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

cpanm Log::Any::For::Class

perl -MCPAN -e shell
install Log::Any::For::Class