NAME
Janus - A maintenance platform
SYNOPSIS
use Janus;
my $janus = Janus->new
(
name => 'foobar',
conf => '/conf/file',
path => '/path/file',
);
$janus->run();SEQUENCES
The following sequences may be defined. See Janus::Sequence.
alpha
BEGIN sequence.
delta
sequence for each batch of targets.
omega
End sequence.
CONFIGURATION
name
Name of the maintenance event.
conf
See Janus::Conf.
path
See Janus::Path.
METHODS
run()
Launch maintenance. Return 1 on failure, 0 on success.
OBJECTS and BEHAVIORS
lock
Janus creates/obtains an advisory lock under the run directory. See Vulcan::ProcLock.
log
Janus logs to a file under the log directory. A symbolic link to the log file is created under the run directory. See Janus::Log.
ctrl
Subroutines stuck and exclude are created from ctrl. See Janus::Ctrl.
cache
Janus loads cache (HASH) from a YAML file, if any, under the run directory, then unlinks said file. When INT or TERM signal is caught, Janus dumps cache to said file, clears ctrl, and exits.