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# frozen_string_literal: true
#
# Author:: Benjamin Black (<bb@chef.io>)
# Copyright:: Copyright (c) Chef Software Inc.
# License:: Apache License, Version 2.0
#
# 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.
#
# Note: This plugin requires libvirt-bin/libvirt-dev as well as the ruby-libvirt
# gem to be installed before it will properly parse data
Ohai.plugin(:Libvirt) do
%w{ uri capabilities nodeinfo domains networks storage }.each do |info|
provides "libvirt/#{info}"
depends "virtualization"
end
def emu
@emu ||= (virtualization[:system].eql?("kvm") ? "qemu" : virtualization[:system])
end
def load_libvirt
require "libvirt" # this is the ruby-libvirt gem not the libvirt gem
logger.trace("Plugin Libvirt: Successfully loaded ruby-libvirt gem")
rescue LoadError
logger.trace("Plugin Libvirt: Can't load gem ruby-libvirt.")
end
def virtconn
@virt_connect ||= Libvirt.open_read_only("#{emu}:///system")
end
def get_node_data
node_data = Mash.new
ni = virtconn.node_get_info
%w{cores cpus memory mhz model nodes sockets threads}.each { |a| node_data[a] = ni.send(a) }
node_data
end
def get_domain_data
domain_data = Mash.new
virtconn.list_domains.each do |d|
dv = virtconn.lookup_domain_by_id d
domain_data[dv.name] = Mash.new
domain_data[dv.name][:id] = d
%w{os_type uuid}.each { |a| domain_data[dv.name][a] = dv.send(a) }
%w{cpu_time max_mem memory nr_virt_cpu state}.each { |a| domain_data[dv.name][a] = dv.info.send(a) }
end
domain_data
end
def get_network_data
network_data = Mash.new
virtconn.list_networks.each do |n|
nv = virtconn.lookup_network_by_name n
network_data[n] = Mash.new
%w{bridge_name uuid}.each { |a| network_data[n][a] = nv.send(a) }
end
network_data
end
def get_storage_data
storage_data = Mash.new
virtconn.list_storage_pools.each do |pool|
sp = virtconn.lookup_storage_pool_by_name pool
storage_data[pool] = Mash.new
%w{autostart uuid}.each { |a| storage_data[pool][a] = sp.send(a) }
%w{allocation available capacity state}.each { |a| storage_data[pool][a] = sp.info.send(a) }
storage_data[pool][:volumes] = Mash.new
sp.list_volumes.each do |v|
storage_data[pool][:volumes][v] = Mash.new
sv = sp.lookup_volume_by_name v
%w{key name path}.each { |a| storage_data[pool][:volumes][v][a] = sv.send(a) }
%w{allocation capacity type}.each { |a| storage_data[pool][:volumes][v][a] = sv.info.send(a) }
end
end
storage_data
end
collect_data do
if virtualization[:role].eql?("host")
load_libvirt
begin
libvirt_data = Mash.new
libvirt_data[:uri] = virtconn.uri
libvirt_data[:libvirt_version] = Libvirt.version(emu)[0].to_s
libvirt_data[:nodeinfo] = get_node_data
libvirt_data[:domains] = get_domain_data
libvirt_data[:networks] = get_network_data
libvirt_data[:storage] = get_storage_data
virtconn.close
libvirt libvirt_data
rescue NameError
logger.trace("Plugin Libvirt: Cannot load ruby-libvirt gem. Skipping...")
rescue Libvirt::ConnectionError
logger.trace("Plugin Libvirt: Failed to connect to #{emu}:///system. Skipping...")
end
else
logger.trace("Plugin Libvirt: Node is not a virtualization host. Skipping...")
end
end
end
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