Provided by: munin-doc_2.0.25-2ubuntu0.16.04.4_all 
NAME
Munin::Master::Utils - Exports a lot of utility functions.
SYNOPSIS
use Munin::Master::Utils;
SUBROUTINES
munin_category_status
Gets current status of a category.
Parameters:
- $hash: A ref to the hash node whose children to check
- $limits: A ref to the root node of the limits tree
- $category: The category to review
- $check_draw: [optional] Ignore undrawn fields
Returns:
- Success: The status of the field
- Failure: undef
munin_readconfig_base
Read configuration file, include dir files, and initialize important default values
that are optional.
Parameters:
- $file: munin.conf filename. If omitted, default filename is used.
Returns:
- Success: The $config hash (also cached in module)
munin_copy_node
Copy hash node.
Parameters:
- $from: Hash node to copy
- $to: Where to copy it to
Returns:
- Success: $to
- Failure: undef
munin_copy_node_toloc
Copy hash node at.
Parameters:
- $from: Hash node to copy
- $to: Where to copy it to
- $loc: Path to node under $to
Returns:
- Success: $to
- Failure: undef
munin_createlock
munin_delete
munin_draw_field
Check whether a field will be visible in the graph or not.
Parameters:
- $hash: A ref to the hash node for the field
Returns:
- Success: Boolean; true if field will be graphed, false if not
- Failure: undef
munin_field_status
Gets current status of a field.
Parameters:
- $hash: A ref to the field hash node
- $limits: A ref to the root node of the limits tree
- $check_draw: [optional] Ignore undrawn fields
Returns:
- Success: The status of the field
- Failure: undef
munin_find_field
Search a hash to find hash nodes with $field defined.
Parameters:
- $hash: A hash ref to search
- $field: The name of the field to search for, or a regex
- $avoid: [optional] Stop traversing further down if this field is found
Returns:
- Success: A ref to an array of the hash nodes containing $field.
- Failure: undef
munin_get
Get variable.
Parameters:
- $hash: Ref to hash node
- $field: Name of field to get
- $default: [optional] Value to return if $field isn't set
Returns:
- Success: field contents
- Failure: $default if defined, else undef
munin_get_bool
Get boolean variable.
Parameters:
- $hash: Ref to hash node
- $field: Name of field to get
- $default: [optional] Value to return if $field isn't set
Returns:
- Success: 1 or 0 (true or false)
- Failure: $default if defined, else undef
munin_get_bool_val
munin_get_children
Get all child hash nodes.
Parameters:
- $hash: A hash ref to the parent node
Returns:
- Success: A ref to an array of the child nodes
- Failure: undef
munin_get_field_order
Get the field order in a graph.
Parameters:
- $hash: A hash ref to the service
Returns:
- Success: A ref to an array of the field names
- Failure: undef
munin_get_filename
Get rrd filename for a field, without any bells or whistles. Used by munin-update to
figure out which file to update.
Parameters:
- $hash: Ref to hash field
Returns:
- Success: Full path to rrd file
- Failure: undef
munin_get_html_filename
Get the full path-name of an html file.
Parameters:
- $hash: A ref to the service hash node
Returns:
- Success: The file name with full path
- Failure: undef
munin_get_max_label_length
Get the length of the longest label in a graph.
Parameters:
- $hash: the graph in question
- $order: A ref to an array of fields (graph_order)
Returns:
- Success: The length of the longest label in the graph
- Failure: undef
munin_get_node
Gets a node by loc.
Parameters:
- $hash: A ref to the hash to set the variable in
- $loc: A ref to an array with the full path of the node
Returns:
- Success: The node ref found by $loc
- Failure: undef
munin_get_node_loc
Get location array for hash node.
Parameters:
- $hash: A ref to the node
Returns:
- Success: Ref to an array with the full path of the variable
- Failure: undef
munin_get_node_name
Return the name of the hash node supplied.
Parameters:
- $hash: A ref to the hash node
Returns:
- Success: The name of the node
munin_get_node_partialpath
Gets a node from a partial path.
Parameters:
- $hash: A ref to the "current" location in the hash tree
- $var: A path string with relative location (from the $hash).
Returns:
- Success: The node
- Failure: undef
munin_get_parent
Get parent node of a hash.
Parameters:
- $hash: A ref to the node
Returns:
- Success: Ref to an parent
- Failure: undef
munin_get_parent_name
Return the name of the parent of the hash node supplied
Parameters:
- $hash: A ref to the hash node
Returns:
- Success: The name of the parent node
- Failure: If no parent node exists, "none" is returned.
munin_get_picture_filename
Get the full path+name of a picture file.
Parameters:
- $hash: A ref to the service hash node
- $scale: [optional] The scale (day, week, year, month)
- $sum: [optional] Boolean value, whether it's a sum graph or not.
Returns:
- Success: The file name with full path
- Failure: undef
munin_get_picture_loc
Get location array for hash node for picture purposes. Differs from munin_get_node_loc
in that it honors #%#origin metadata
Parameters:
- $hash: A ref to the node
Returns:
- Success: Ref to an array with the full path of the variable
- Failure: undef
munin_get_root_node
Get the root node of the hash tree.
Parameters:
- $hash: A hash node to traverse up from
Returns:
- Success: A ref to the root hash node
- Failure: undef
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.
Parameters:
- $field: The hash object of the field
- $path: [optional] The path to the field (as given in graph_order/sum/stack/et al)
Returns:
- Success: A string with the filename of the rrd file
- Failure: undef
munin_get_separated_node
Copy a node to a separate node without "specials".
Parameters:
- $hash: The node to copy
Returns:
- Success: A ref to a new node without "#%#"-fields
- Failure: undef
munin_get_var_path
munin_getlock
munin_graph_column_headers
munin_has_subservices
munin_has_subservices($hash);
Checks whether the service represented by $hash has subservices (multigraph), and
returns the result.
Parameters:
- $hash: Hash reference pointing to a service
Returns:
- true: if the hash is indeed a service, and said service has got subservices
- false: otherwise
munin_mkdir_p
munin_mkdir_p('/a/path/', oct('777'));
Make a directory and recursively any nonexistent directory in the path to it.
munin_node_status
munin_nscasend
munin_overwrite
Take contents of one config-namespace and replace/insert the instances needed.
munin_parse_config
munin_path_to_loc
Returns a loc array from a path string.
Parameters:
- $path: A path string
Returns:
- Success: A ref to an array with the loc
- Failure: undef
munin_readconfig_part
Read a partial configuration
Parameters:
- $what: name of the part that should be loaded (datafile or limits)
Returns:
- Success: a $config with the $specified part, but overwritten by $config
munin_removelock
munin_runlock
munin_service_status
Gets current status of a service.
Parameters:
- $hash: A ref to the field hash node
- $limits: A ref to the root node of the limits tree
- $check_draw: [optional] Ignore undrawn fields
Returns:
- Success: The status of the field
- Failure: undef
munin_set
Sets a variable in a hash.
Parameters:
- $hash: A ref to the hash to set the variable in
- $var: The name of the variable
- $val: The value to set the variable to
Returns:
- Success: The $hash we were handed
- Failure: undef
munin_set_var_loc
Sets a variable in a hash.
Parameters:
- $hash: A ref to the hash to set the variable in
- $loc: A ref to an array with the full path of the variable
- $val: The value to set the variable to
Returns:
- Success: The $hash we were handed
- Failure: undef
munin_set_var_path
Sets a variable in a hash.
Parameters:
- $hash: A ref to the hash to set the variable in
- $var: A string with the full path of the variable
- $val: The value to set the variable to
Returns:
- Success: The $hash we were handed
- Failure: The $hash we were handed
munin_writeconfig
munin_writeconfig_loop
COPYING
Copyright (C) 2003-2007 Jimmy Olsen, Audun Ytterdal
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; version 2
dated June, 1991.
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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301 USA.