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zone.rb
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zone.rb
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# -------------------------------------------------------------------------- #
# Copyright 2002-2024, OpenNebula Project, OpenNebula Systems #
# #
# Licensed under the Apache License, Version 2.0 (the "License"); you may #
# not use this file except in compliance with the License. You may obtain #
# a copy of the License at #
# #
# http://www.apache.org/licenses/LICENSE-2.0 #
# #
# Unless required by applicable law or agreed to in writing, software #
# distributed under the License is distributed on an "AS IS" BASIS, #
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. #
# See the License for the specific language governing permissions and #
# limitations under the License. #
#--------------------------------------------------------------------------- #
require 'opennebula/pool_element'
module OpenNebula
class Zone < PoolElement
#######################################################################
# Constants and Class Methods
#######################################################################
ZONE_METHODS = {
:info => "zone.info",
:allocate => "zone.allocate",
:update => "zone.update",
:rename => "zone.rename",
:delete => "zone.delete",
:addserver => "zone.addserver",
:delserver => "zone.delserver",
:resetserver => "zone.resetserver",
:enable => "zone.enable"
}
ZONE_STATES=%w{ENABLED DISABLED}
SHORT_ZONE_STATES={
"ENABLED" => "on",
"DISABLED" => "off"
}
# Creates a Zone description with just its identifier
# this method should be used to create plain Zone objects.
# @param id [Integer] the id of the Zone
#
# Example:
# zone = Zone.new(Zone.build_xml(3),rpc_client)
#
def Zone.build_xml(pe_id=nil)
if pe_id
zone_xml = "<ZONE><ID>#{pe_id}</ID></ZONE>"
else
zone_xml = "<ZONE></ZONE>"
end
XMLElement.build_xml(zone_xml,'ZONE')
end
# Class constructor
def initialize(xml, client)
super(xml,client)
end
#######################################################################
# XML-RPC Methods for the Zone Object
#######################################################################
# Retrieves the information of the given Zone.
# @return [nil, OpenNebula::Error] nil in case of success, Error
# otherwise
def info()
super(ZONE_METHODS[:info], 'ZONE')
end
# Retrieves the information extended of the given Zone.
# @return [nil, OpenNebula::Error] nil in case of success, Error
# otherwise
def info_extended()
rc = info()
return rc if OpenNebula.is_error?(rc)
@xml.xpath("SERVER_POOL/SERVER").each do |server|
endpoint = server.xpath("ENDPOINT")
endpoint = endpoint.text if endpoint
next if endpoint.nil?
client = OpenNebula::Client.new(nil, endpoint, {:timeout => 5})
xml = client.call("zone.raftstatus")
if OpenNebula.is_error?(xml)
add_element(server, "STATE", "-")
add_element(server, "TERM", "-")
add_element(server, "VOTEDFOR", "-")
add_element(server, "COMMIT", "-")
add_element(server, "LOG_INDEX", "-")
add_element(server, "FEDLOG_INDEX", "-")
next
end
xml = Nokogiri::XML(xml)
add_element_xml(server, xml, "STATE", "RAFT/STATE")
add_element_xml(server, xml, "TERM", "RAFT/TERM")
add_element_xml(server, xml, "VOTEDFOR", "RAFT/VOTEDFOR")
add_element_xml(server, xml, "COMMIT", "RAFT/COMMIT")
add_element_xml(server, xml, "LOG_INDEX", "RAFT/LOG_INDEX")
add_element_xml(server, xml, "FEDLOG_INDEX","RAFT/FEDLOG_INDEX")
end
end
alias_method :info!, :info
alias_method :info_extended!, :info_extended
# Allocates a new Zone in OpenNebula
#
# @param description [String] The template of the Zone.
# @return [nil, OpenNebula::Error] nil in case of success, Error
# otherwise
def allocate(description)
super(ZONE_METHODS[:allocate], description)
end
# Replaces the template contents
#
# @param new_template [String] New template contents
# @param append [true, false] True to append new attributes instead of
# replace the whole template
#
# @return [nil, OpenNebula::Error] nil in case of success, Error
# otherwise
def update(new_template=nil, append=false)
super(ZONE_METHODS[:update], new_template, append ? 1 : 0)
end
# Deletes the Zone
# @return [nil, OpenNebula::Error] nil in case of success, Error
# otherwise
def delete()
super(ZONE_METHODS[:delete])
end
# Renames this Zone
#
# @param name [String] New name for the Zone.
#
# @return [nil, OpenNebula::Error] nil in case of success, Error
# otherwise
def rename(name)
return call(ZONE_METHODS[:rename], @pe_id, name)
end
# Adds servers to this Zone
#
# @param name [String] Template with zone servers
# SERVER = [ NAME = "<server_name>", ENDPOINT = "<rpc_ep>" ]
#
# @return [nil, OpenNebula::Error] nil in case of success, Error
# otherwise
def add_servers(servers)
return call(ZONE_METHODS[:addserver], @pe_id, servers)
end
# Delete servers from this Zone
#
# @param id [Int] Server ID
#
# @return [nil, OpenNebula::Error] nil in case of success, Error
# otherwise
def delete_servers(server_id)
return call(ZONE_METHODS[:delserver], @pe_id, server_id)
end
# Reset index for a follower
#
# @param id [Int] Server ID
#
# @return [nil, OpenNebula::Error] nil in case of success, Error
# otherwise
def reset_server(server_id)
return call(ZONE_METHODS[:resetserver], @pe_id, server_id)
end
# Enable zone
#
# @return [nil, OpenNebula::Error] nil in case of success, Error
# otherwise
def enable()
return call(ZONE_METHODS[:enable], @pe_id, true)
end
# Disable zone, only readonly commands can be executed in disabled
# state
#
# @return [nil, OpenNebula::Error] nil in case of success, Error
# otherwise
def disable()
return call(ZONE_METHODS[:enable], @pe_id, false)
end
#######################################################################
# Helpers to get Zone information
#######################################################################
# Returns the state of the Zone (numeric value)
def state
self['STATE'].to_i
end
# Returns the state of the Zone (string value)
def state_str
ZONE_STATES[state]
end
private
# These methods adds elements to the given node of the zone
def add_element(parent, key, value)
elem = Nokogiri::XML::Node.new(key, @xml.document)
elem.content = value
parent.add_child(elem)
end
def add_element_xml(parent, doc, key, xpath)
value = doc.at_xpath(xpath)
if value
value = value.text
else
value = "-"
end
elem = Nokogiri::XML::Node.new(key, @xml.document)
elem.content = value
parent.add_child(elem)
end
end
end