webgui/sbin/diskUsage.pl
2010-04-15 14:02:39 -05:00

211 lines
6.5 KiB
Perl
Executable file

#!/usr/bin/env perl
#-------------------------------------------------------------------
# WebGUI is Copyright 2001-2009 Plain Black Corporation.
#-------------------------------------------------------------------
# Please read the legal notices (docs/legal.txt) and the license
# (docs/license.txt) that came with this distribution before using
# this software.
#-------------------------------------------------------------------
# http://www.plainblack.com info@plainblack.com
#-------------------------------------------------------------------
use strict;
use File::Basename ();
use File::Spec;
my $webguiRoot;
BEGIN {
$webguiRoot = File::Spec->rel2abs(File::Spec->catdir(File::Basename::dirname(__FILE__), File::Spec->updir));
unshift @INC, File::Spec->catdir($webguiRoot, 'lib');
}
use Getopt::Long;
use Pod::Usage;
use WebGUI::Session;
use WebGUI::Asset;
my $configFile;
my $quiet;
my $assetId;
my $assetUrl;
my $summarize = 0;
my $blockSize = 1;
my $recurse = 1;
my $help;
$| = 1; # No buffering
GetOptions(
'configFile=s'=>\$configFile, # WebGUI Config file
'assetId=s' =>\$assetId, # AssetId to start with (optional) uses default page if not specified.
'assetUrl=s' =>\$assetUrl, # AssetUrl to start with (optional) uses default page if not specified
'quiet' =>\$quiet, # No output except for numeric file size (default unit is bytes, will use blockSize if specified)
'summary!' =>\$summarize, # Displays total space used for asset and descendants (unless recurse flag is set to false in which case only the asset specified will be used)
'blockSize=i' =>\$blockSize, # Change units in which space used is specified, defaults to bytes.
'recurse!' =>\$recurse, # Flag indicating whether the disk space usage should consider asset and all descendants (default) or just the asset specified.
'help!' =>\$help,
);
pod2usage( verbose => 2 ) if $help;
pod2usage() unless $configFile;
my $session = start();
du();
finish($session);
#-------------------------------------------------
sub start {
my $session = WebGUI::Session->open($webguiRoot,$configFile);
$session->user({userId=>3});
return $session;
}
#-------------------------------------------------
sub finish {
my $session = shift;
$session->var->end();
$session->close();
}
#-------------------------------------------------------
sub du {
my $asset;
my $totalSize; # disk space used
if ($assetId) { # They specified an assetId to start with
$asset = WebGUI::Asset->newByDynamicClass($session,$assetId);
die ("Unable to instanciate asset $assetId") unless defined $asset;
print "\nStarting with asset $assetId...\n" unless $quiet;
}
elsif ($assetUrl) { # They specified an assetUrl to start with
$asset = WebGUI::Asset->newByUrl($session,$assetUrl);
die ("Unable to instanciate asset with URL $assetUrl") unless defined $asset;
print "\nStarting with asset url $assetUrl...\n" unless $quiet;
}
else { # No id specified, assume they want to start with the site's home page
$asset = WebGUI::Asset->getDefault($session);
die ("Unable to instanciate the WebGUI Default Page. Something is seriously broken.") unless defined $asset;
print "\nStarting with the Default Page...\n" unless $quiet;
}
my $lineage = ["self"];
push (@$lineage, "descendants") if $recurse;
my $descendants = $asset->getLineage($lineage,{returnObjects=>1});
foreach my $currentAsset (@$descendants) {
my $size = $currentAsset->get("assetSize");
$size = $size / $blockSize; # convert to blockSize specified
$totalSize += $size;
$size = sprintf("%.2f", $size) unless ($blockSize == 1); # No point in printing .00 after everything
print "$size\t".$currentAsset->getUrl."\n" unless ($quiet || $summarize);
}
# Format to a whole number unless the total is less than 1. If it's less than 1 attempt to display 2 digits of precision to avoid displaying a zero size.
unless ($totalSize < 1) {
$totalSize = sprintf("%.0f", $totalSize);
}
else {
$totalSize = sprintf("%.2f", $totalSize);
}
unless ($quiet) { # Human readable
# try to come up with an intellegible label for the output
my $units;
if ($blockSize == 1) { # bytes
$units = "bytes";
} elsif ($blockSize == 1000 || $blockSize == 1024) { # kilobytes
$units = "Kb";
} elsif ($blockSize == 1000*1000 || $blockSize == 1024*1024) { # megabytes
$units = "Mb";
} else { # Unknown units
$units = "units";
}
print "\nTotal Space used: $totalSize $units \n\n";
}
else { # return script friendly output of the size only.
print $totalSize;
}
}
__END__
=head1 NAME
diskUsage - Display amount of disk space used by a WebGUI asset
an its desecendants.
=head1 SYNOPSIS
diskUsage --configFile config.conf
[--assetId id]
[--assetUrl url]
[--blockSize bytes]
[--norecurse]
[--quiet]
[--summary]
diskUsage --help
=head1 DESCRIPTION
This WebGUI utility script displays the amount of disk space used by
an asset and it's descendants. It has been modeled after the *nix 'du'
utility.
=over
=item B<--configFile config.conf>
The WebGUI config file to use. Only the file name needs to be specified,
since it will be looked up inside WebGUI's configuration directory.
This parameter is required.
=item B<--assetId id>
Calculate disk usage starting from WebGUI's Asset identified by B<id>.
If this parameter is not supplied, calculations will start from
WebGUI's default page as defined in the Site settings.
=item B<--assetUrl url>
Calculate disk usage starting from the particular URL given by B<url>,
which must be relative to the server (e.g. B</home> instead of
B<http://your.server/home>). If this parameter is not supplied, calculations
will start from WebGUI's default page as defined in the Site settings.
=item B<--blockSize bytes>
Use B<bytes> as scaling factor to change the units in which disk space
will be reported. If this parameter is not supplied, it defaults to B<1>,
hence the results will be expressed in bytes. If you want to have kb,
use B<--blockSize 1024>.
=item B<--norecurse>
Prevent recursive calculation of disk space. This effectively computes
the used disk space for the starting Asset only, without including
its descendants.
=item B<--quiet>
Just display the total amount of disk space as a raw value.
=item B<--summary>
Just display the total amount of disk space in a human readable format.
=item B<--help>
Shows this documentation, then exits.
=back
=head1 AUTHOR
Copyright 2001-2009 Plain Black Corporation.
=cut