This plugin is an Elektra to Ruby bridge and makes is possible to implement Elektra plugins with Ruby. This plugin requires the ruby binding.
Mount a configuration file using this plugin, which specifying the concrete Ruby Elektra plugin:
require 'kdb'
# call the static function 'define' to define a new Plugin. This
# function expects one argument and a block, which implements the plugin
Kdb::Plugin.define :somename do
# this is automatically defined
#@plugin_name = "somename"
# 'Open' method, called during Elektra plugin initialization
# parameter:
# - errorKey: Kdb::Key, add error information if required
# returns:
# - nil or 0: no error
# - -1 : error during initialization
def open(errorKey)
# perform plugin initialization
# if an error occurs it is save to simply throw an exception. This has the same
# semantic as returning -1
end
# the close method is currently not supported, since this will crash the
# Ruby-VM if this method should be called during the VM.finalization !!!
#def close(errorKey)
#
#end
# 'check_conf' method, called before this plugin is used for mounting to check
# if the supplied config is valid. Missing or invalid config settings can be
# 'corrected' or added.
# Parameter:
# - errorKey: Kdb::Key, to add error information
# - config: Kdb::KeySet, holds all plugin configuration setting
# returns:
# - nil or 1 : success and the plugin configuration was NOT changed
# - 0 : the plugin configuration was changed and is now OK
# - -1 : the configuration is NOT OK
def check_conf(errorKey, config)
end
# 'get' method, is called during a get cycle, to query all keys
#
# Parameter:
# - returned : Kdb::KeySet, already holding keys to be manipulated or to be
# filled by a storage plugin. All added keys have to have the same
# key name prefix as given by parentKey.
# - parentKey: Kdb::Key, defining the current Elektra path. The value of this key
# holds the configuration file name to read from
# Returns:
# - nil or 1 : on success
# - 0 : OK but nothing was to do
# - -1 : failure
def get(returned, parentKey)
end
# 'set' method, is called when writing a configuration file
#
# Parameter:
# - returned : Kdb::KeySet, holding all keys which should be written to the
# config file.
# - parentKey: Kdb::Key, defining the current Elektra path. The value of this key
# holds the configuration file name to write to
# Returns:
# - nil or 1 : on success
# 0 : on success with no changed keys in database
# -1 : failure
def set(returned, parentKey)
end
# 'error' method, is called when some plugin had a problem during a write cycle
#
# Parameter:
# - returned : Kdb::KeySet, holding all keys which should be written to the
# config file.
# - parentKey: Kdb::Key, defining the current Elektra path. The value of this key
# holds the configuration file name to write to
# Returns:
# - nil or 1 : on success
# 0 : on success with no action
# -1 : failure
def error(returned, parentKey)
end
end
