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Mojo::Log(3pm) | User Contributed Perl Documentation | Mojo::Log(3pm) |
NAME¶
Mojo::Log - Simple loggerSYNOPSIS¶
use Mojo::Log; # Log to STDERR my $log = Mojo::Log->new; # Customize log file location and minimum log level my $log = Mojo::Log->new(path => '/var/log/mojo.log', level => 'warn'); # Log messages $log->debug('Not sure what is happening here'); $log->info('FYI: it happened again'); $log->warn('This might be a problem'); $log->error('Garden variety error'); $log->fatal('Boom');
DESCRIPTION¶
Mojo::Log is a simple logger for Mojo projects.EVENTS¶
Mojo::Log inherits all events from Mojo::EventEmitter and can emit the following new ones.message¶
$log->on(message => sub { my ($log, $level, @lines) = @_; ... });
Emitted when a new message gets logged.
$log->on(message => sub { my ($log, $level, @lines) = @_; say "$level: ", @lines; });
ATTRIBUTES¶
Mojo::Log implements the following attributes.format¶
my $cb = $log->format; $log = $log->format(sub {...});
A callback for formatting log messages.
$log->format(sub { my ($time, $level, @lines) = @_; return "[2018-11-08 14:20:13.77168] [28320] [info] I ♥ Mojolicious\n"; });
handle¶
my $handle = $log->handle; $log = $log->handle(IO::Handle->new);
Log filehandle used by default "message" event, defaults to opening "path" or "STDERR".
history¶
my $history = $log->history; $log = $log->history([[time, 'debug', 'That went wrong']]);
The last few logged messages.
level¶
my $level = $log->level; $log = $log->level('debug');
Active log level, defaults to "debug". Available log levels are "debug", "info", "warn", "error" and "fatal", in that order.
max_history_size¶
my $size = $log->max_history_size; $log = $log->max_history_size(5);
Maximum number of logged messages to store in "history", defaults to 10.
path¶
my $path = $log->path $log = $log->path('/var/log/mojo.log');
Log file path used by "handle".
short¶
my $bool = $log->short; $log = $log->short($bool);
Generate short log messages without a timestamp, suitable for systemd, defaults to the value of the "MOJO_LOG_SHORT" environment variables.
METHODS¶
Mojo::Log inherits all methods from Mojo::EventEmitter and implements the following new ones.append¶
$log->append("[2018-11-08 14:20:13.77168] [28320] [info] I ♥ Mojolicious\n");
Append message to "handle".
debug¶
$log = $log->debug('You screwed up, but that is ok'); $log = $log->debug('All', 'cool'); $log = $log->debug(sub {...});
Emit "message" event and log "debug" message.
error¶
$log = $log->error('You really screwed up this time'); $log = $log->error('Wow', 'seriously'); $log = $log->error(sub {...});
Emit "message" event and log "error" message.
fatal¶
$log = $log->fatal('Its over...'); $log = $log->fatal('Bye', 'bye'); $log = $log->fatal(sub {...});
Emit "message" event and log "fatal" message.
info¶
$log = $log->info('You are bad, but you prolly know already'); $log = $log->info('Ok', 'then'); $log = $log->info(sub {...});
Emit "message" event and log "info" message.
is_level¶
my $bool = $log->is_level('debug');
Check active log "level".
# True $log->level('debug')->is_level('debug'); $log->level('debug')->is_level('info'); # False $log->level('info')->is_level('debug'); $log->level('fatal')->is_level('warn');
new¶
my $log = Mojo::Log->new; my $log = Mojo::Log->new(level => 'warn'); my $log = Mojo::Log->new({level => 'warn'});
Construct a new Mojo::Log object and subscribe to "message" event with default logger.
warn¶
$log = $log->warn('Dont do that Dave...'); $log = $log->warn('No', 'really'); $log = $log->warn(sub {...});
Emit "message" event and log "warn" message.
SEE ALSO¶
Mojolicious, Mojolicious::Guides, <https://mojolicious.org>.2019-02-05 | perl v5.28.1 |