NAME¶

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¶

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.