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package Munin::Common::Config;
# $Id$
use warnings;
use strict;
use Carp;
use English qw(-no_match_vars);
# Functions here are unable to log as they don't know if they're used
# by the node or the master which use divergent logging facilities.
# In fact, the list in %legal is only used by the master.
my %legal = map { $_ => 1 } qw(
address
always_send
category_order
cdef
cdef_name
cgitmpdir
cgiurl
cgiurl_graph
colour
command
compare
contact
contacts
create_args
critical
dbdir
domain_order
draw
dropdownlimit
extinfo
fetch_data
filename
fork
graph
graph
graphable
graph_args
graph_args_after
graph_category
graph_data_size
graph_future
graph_height
graph_info
graph_noscale
graph_order
graph_period
graph_printf
graph_scale
graph_sources
graph_strategy
graph_sums
graph_title
graph_total
graph_vlabel
graph_vtitle
graph_width
group_order
host_name
htaccess
htmldir
html_rename
html_strategy
includedir
info
label
line
local_address
logdir
max
max_cgi_graph_jobs
max_graph_jobs
max_html_jobs
max_messages
max_processes
max_size_x
max_size_y
min
munin_cgi_graph_jobs
nagios
ncsa
ncsa_config
ncsa_server
negative
node_order
notify_alias
nsca
nsca_config
nsca_server
num_messages
num_unknowns
ok
onlynullcdef
palette
pipe
pipe_command
port
predict
process
realname
realservname
rrdcached_socket
rundir
service_order
skipdraw
ssh_command
ssh_options
stack
state
staticdir
sum
text
timeout
tls
tls_ca_certificate
tls_certificate
tls_match
tls_pem
tls_private_key
tls_verify_certificate
tls_verify_depth
tmpldir
trend
type
unknown
unknown_limit
update
update_rate
use_default_name
use_node_name
use_default_node
version
warn
warning
worker_start_delay
);
my %bools = map { $_ => 1} qw(yes no true false on off 1 0);
sub cl_is_keyword {
# Class-less version of is_keyword for legacy code.
my ($word) = @_;
return defined $legal{$word};
}
sub is_keyword {
my ($self, $word) = @_;
return defined $legal{$word};
}
sub parse_config_from_file {
my ($self, $config_file) = @_;
$config_file ||= $self->{config_file};
open my $file, '<', $config_file
or croak "ERROR: Cannot open '$config_file': $OS_ERROR";
# Note, parse_config is provided by node or master specific config class
eval {
$self->parse_config($file);
};
if ($EVAL_ERROR) {
croak "ERROR: Failed to parse config file '$config_file': $EVAL_ERROR";
}
close $file
or croak "Cannot close '$config_file': $OS_ERROR";
}
sub _trim {
# Trim leading and trailing whitespace.
my $class = shift;
chomp $_[0];
$_[0] =~ s/^\s+//;
$_[0] =~ s/\s+$//;
return;
}
# allows # characters to get through as long as they're escaped
# with a backslash
sub _strip_comment {
my $class = shift;
$_[0] =~ s/(?<!\\)#.*//;
$_[0] =~ s/\\#/#/g;
return;
}
sub _looks_like_a_bool {
my ($class, $str) = @_;
return $bools{lc $str};
}
sub _parse_bool {
my ($class, $str) = @_;
croak "Parse exception: '$str' is not a boolean."
unless $class->_looks_like_a_bool($str);
return $str =~ m{\A no|false|off|0 \z}xi ? 0 : 1;
}
1;
__END__
=head1 NAME
Munin::Common::Config - Abstract base class for common config code.
=head1 SYNOPSIS
Don't use it directly. See L<Munin::Master::Config> and L<Munin::Node::Config>.
=head1 METHODS
=over
=item B<parse_config_from_file>
$config->parse_config_from_file($file_name);
Parses the configuration in $file_name.
=back
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