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#!/usr/local/bin/perl -w
# -*- perl -*-
# Cricket: a configuration, polling and data display wrapper for RRD files
#
# Copyright (C) 1998-2002 Jeff R. Allen and WebTV Networks, Inc.
# Copyright (C) 2002 Bert Driehuis <driehuis@playbeing.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
BEGIN {
my $programdir = (($0 =~ m:^(.*/):)[0] || "./") . "..";
eval "require '$programdir/cricket-conf.pl'";
eval "require '/usr/local/etc/cricket-conf.pl'"
unless $Common::global::gInstallRoot;
$Common::global::gInstallRoot ||= $programdir;
}
use lib "$Common::global::gInstallRoot/lib";
use RRDs 1.000101;
use Common::Version;
use Common::global;
use Common::Log;
use Common::Options;
use Common::Util;
use Common::Map;
use Common::HandleTarget;
use ConfigTree::Cache;
Common::Options::commonOptions();
$Common::global::gCT ||= new ConfigTree::Cache;
$gCT = $Common::global::gCT;
$gCT->Base($Common::global::gConfigRoot);
$gCT->Warn(\&Warn);
if (! $gCT->init()) {
Die("Failed to open compiled config tree from " .
"$Common::global::gConfigRoot/config.db: $!");
}
# if they gave us no subtrees to focus on, use the root of the config tree
if ($#ARGV+1 == 0) {
push @ARGV, '/';
}
# foreach subtree to do
# find the base node of that subtree
# foreach leaf node of this subtree
# process it
my($subtree);
foreach $subtree (@ARGV) {
if ($gCT->nodeExists($subtree)) {
$gCT->visitLeafs($subtree, \&handleTarget,
\&handleTargetInstance, \&localHandleTargetInstance);
} else {
Warn("Unknown subtree $subtree.");
}
}
exit;
# only use strict for the subroutines
use strict;
sub localHandleTargetInstance {
my($name, $target) = @_;
my($tname) = $target->{'auto-target-name'};
my($tpath) = $target->{'auto-target-path'};
# first, dump the dict, to help debug things
my($k, $v, $t);
$t = "target $tname\n";
foreach $k (sort (keys(%{$target}))) {
next if ($k eq "auto-target-name");
$v = $target->{$k};
$v = "[undef]" if (! defined($v));
$t .= "\t$k = $v\n";
}
Debug($t);
# skip this if it's a meta-target
if ((defined($target->{'targets'})) || (defined($target->{'mtargets'}))) {
Debug("Skipping meta target $tname");
return;
}
my($datafile) = $target->{'rrd-datafile'};
if (!defined($datafile)) {
Warn("Could not find a datafile for $tname.");
return;
}
if (-f $datafile) {
return unless fixRRD($name, $target);
}
}
sub fixRRD {
# Create a new RRD file base on the contents of the
# referenced dictionary.
my($name, $target) = @_;
my($datafile) = $target->{'rrd-datafile'};
my($tname) = $target->{'auto-target-name'};
my($ttype) = lc($target->{'target-type'});
my($type, $val);
my($valid) = 0;
my(@dsDesc) = ();
my($dsCnt) = 0;
my(@arg) = ($datafile);
my($ttRef) = $main::gCT->configHash($name, 'targettype', $ttype, $target);
if (! $ttRef) {
Warn("Unknown target type: $ttype.");
return;
}
# first, process the ds tag
my($dses) = $ttRef->{'ds'};
if (! $dses) {
Warn("No ds tag found for target type $ttype.");
return;
}
my($ds);
foreach $ds (split(/\s*,\s*/, $dses)) {
my($dsname) = lc($ds);
my($d) = $main::gCT->configHash($name, 'datasource', $dsname, $target);
if (defined($d)) {
my $old_dsname;
my $new_dsname;
if ($Common::global::gLongDSName) {
$old_dsname = "ds$dsCnt";
$new_dsname = Common::Util::mungeDsName($dsname);
} else {
$old_dsname = Common::Util::mungeDsName($dsname);
$new_dsname = "ds$dsCnt";
}
push @dsDesc, "-r", "$old_dsname:$new_dsname";
$dsCnt++;
} else {
Warn("Datasource $ds referenced by target " .
"type $ttype does not exist.");
return;
}
}
push(@arg, @dsDesc);
Info("Updating datafile $datafile for target name $tname.");
Debug(join(' ', 'RRDs::tune', @arg));
RRDs::tune(@arg);
if (my $error = RRDs::error()) {
Warn("Cannot update $datafile: $error\n");
}
return 1;
}
# Local Variables:
# mode: perl
# indent-tabs-mode: nil
# tab-width: 4
# perl-indent-level: 4
# End:
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