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.\" ========================================================================
.\"
.IX Title "Munin::Master::Utils 3pm"
.TH Munin::Master::Utils 3pm "2022-02-10" "perl v5.34.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
Munin::Master::Utils \- Exports a lot of utility functions.
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& use Munin::Master::Utils;
.Ve
.SH "SUBROUTINES"
.IX Header "SUBROUTINES"
.IP "\fBmunin_copy_node\fR" 4
.IX Item "munin_copy_node"
Copy hash node.
.Sp
Parameters:
 \- \f(CW$from:\fR Hash node to copy
 \- \f(CW$to:\fR Where to copy it to
.Sp
Returns:
 \- Success: \f(CW$to\fR
 \- Failure: undef
.IP "\fBmunin_delete\fR" 4
.IX Item "munin_delete"
.PD 0
.IP "\fBmunin_get\fR" 4
.IX Item "munin_get"
.PD
Get variable.
.Sp
Parameters:
 \- \f(CW$hash:\fR Ref to hash node
 \- \f(CW$field:\fR Name of field to get
 \- \f(CW$default:\fR [optional] Value to return if \f(CW$field\fR isn't set
.Sp
Returns:
 \- Success: field contents
 \- Failure: \f(CW$default\fR if defined, else undef
.IP "\fBmunin_get_bool\fR" 4
.IX Item "munin_get_bool"
Get boolean variable.
.Sp
Parameters:
 \- \f(CW$hash:\fR Ref to hash node
 \- \f(CW$field:\fR Name of field to get
 \- \f(CW$default:\fR [optional] Value to return if \f(CW$field\fR isn't set
.Sp
Returns:
 \- Success: 1 or 0 (true or false)
 \- Failure: \f(CW$default\fR if defined, else undef
.IP "\fBmunin_get_children\fR" 4
.IX Item "munin_get_children"
Get all child hash nodes.
.Sp
Parameters:
 \- \f(CW$hash:\fR A hash ref to the parent node
.Sp
Returns:
 \- Success: A ref to an array of the child nodes
 \- Failure: undef
.IP "\fBmunin_get_node\fR" 4
.IX Item "munin_get_node"
Gets a node by loc.
.Sp
Parameters:
 \- \f(CW$hash:\fR A ref to the hash to set the variable in
 \- \f(CW$loc:\fR A ref to an array with the full path of the node
.Sp
Returns:
 \- Success: The node ref found by \f(CW$loc\fR
 \- Failure: undef
.IP "\fBmunin_get_node_loc\fR" 4
.IX Item "munin_get_node_loc"
Get location array for hash node.
.Sp
Parameters:
 \- \f(CW$hash:\fR A ref to the node
.Sp
Returns:
 \- Success: Ref to an array with the full path of the variable
 \- Failure: undef
.IP "\fBmunin_get_node_name\fR" 4
.IX Item "munin_get_node_name"
Return the name of the hash node supplied.
.Sp
Parameters:
 \- \f(CW$hash:\fR A ref to the hash node
.Sp
Returns:
 \- Success: The name of the node
.IP "\fBmunin_get_root_node\fR" 4
.IX Item "munin_get_root_node"
Get the root node of the hash tree.
.Sp
Parameters:
 \- \f(CW$hash:\fR A hash node to traverse up from
.Sp
Returns:
 \- Success: A ref to the root hash node
 \- Failure: undef
.IP "\fBmunin_get_rrd_filename\fR" 4
.IX Item "munin_get_rrd_filename"
Get the name of the rrd file corresponding to a field. Checks for lots
of bells and whistles.  This function is the correct one to use when
figuring out where to fetch data from.
.Sp
Parameters:
 \- \f(CW$field:\fR The hash object of the field
 \- \f(CW$path:\fR [optional] The path to the field (as given in graph_order/sum/stack/et al)
.Sp
Returns:
 \- Success: A string with the filename of the rrd file
 \- Failure: undef
.IP "\fBmunin_get_var_path\fR" 4
.IX Item "munin_get_var_path"
.PD 0
.IP "\fBmunin_has_subservices\fR" 4
.IX Item "munin_has_subservices"
.PD
.Vb 1
\&  munin_has_subservices($hash);
.Ve
.Sp
Checks whether the service represented by \f(CW$hash\fR has subservices (multigraph),
and returns the result.
.Sp
Parameters:
 \- \f(CW$hash:\fR Hash reference pointing to a service
.Sp
Returns:
 \- true: if the hash is indeed a service, and said service has got subservices
 \- false: otherwise
.IP "\fBmunin_mkdir_p\fR" 4
.IX Item "munin_mkdir_p"
.Vb 1
\& munin_mkdir_p(\*(Aq/a/path/\*(Aq, oct(\*(Aq777\*(Aq));
.Ve
.Sp
Make a directory and recursively any nonexistent directory in the path
to it.
.IP "\fBmunin_parse_config\fR" 4
.IX Item "munin_parse_config"
.PD 0
.IP "\fBmunin_path_to_loc\fR" 4
.IX Item "munin_path_to_loc"
.PD
Returns a loc array from a path string.
.Sp
Parameters:
 \- \f(CW$path:\fR A path string
.Sp
Returns:
 \- Success: A ref to an array with the loc
 \- Failure: undef
.IP "\fBmunin_set\fR" 4
.IX Item "munin_set"
Sets a variable in a hash.
.Sp
Parameters:
 \- \f(CW$hash:\fR A ref to the hash to set the variable in
 \- \f(CW$var:\fR The name of the variable
 \- \f(CW$val:\fR The value to set the variable to
.Sp
Returns:
 \- Success: The \f(CW$hash\fR we were handed
 \- Failure: undef
.IP "\fBmunin_set_var_loc\fR" 4
.IX Item "munin_set_var_loc"
Sets a variable in a hash.
.Sp
Parameters:
 \- \f(CW$hash:\fR A ref to the hash to set the variable in
 \- \f(CW$loc:\fR A ref to an array with the full path of the variable
 \- \f(CW$val:\fR The value to set the variable to
.Sp
Returns:
 \- Success: The \f(CW$hash\fR we were handed
 \- Failure: undef
.SH "COPYING"
.IX Header "COPYING"
Copyright (C) 2010\-2014 Steve Schnepp
Copyright (C) 2003\-2011 Jimmy Olsen
Copyright (C) 2006\-2010 Nicolai Langfeldt
Copyright (C) Audun Ytterdal
.PP
This program is free software; you can redistribute it and/or
modify it under the terms of the \s-1GNU\s0 General Public License
as published by the Free Software Foundation; version 2 dated June,
1991.
.PP
This program is distributed in the hope that it will be useful,
but \s-1WITHOUT ANY WARRANTY\s0; without even the implied warranty of
\&\s-1MERCHANTABILITY\s0 or \s-1FITNESS FOR A PARTICULAR PURPOSE.\s0  See the
\&\s-1GNU\s0 General Public License for more details.
.PP
You should have received a copy of the \s-1GNU\s0 General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, \s-1MA 02110\-1301 USA.\s0