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require 'fog_extensions'
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class ComputeResource < ActiveRecord::Base
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include Taxonomix
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include Encryptable
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include Authorizable
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include Parameterizable::ByIdName
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encrypts :password
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class_attribute :supported_providers
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self.supported_providers = {
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'Libvirt' => 'Foreman::Model::Libvirt',
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'Ovirt' => 'Foreman::Model::Ovirt',
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'EC2' => 'Foreman::Model::EC2',
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'Vmware' => 'Foreman::Model::Vmware',
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'Openstack' => 'Foreman::Model::Openstack',
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'Rackspace' => 'Foreman::Model::Rackspace',
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'GCE' => 'Foreman::Model::GCE',
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}
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validates_lengths_from_database
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audited :except => [:password, :attrs], :allow_mass_assignment => true
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serialize :attrs, Hash
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has_many :trends, :as => :trendable, :class_name => "ForemanTrend"
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before_destroy EnsureNotUsedBy.new(:hosts)
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validates :name, :presence => true, :uniqueness => true, :no_whitespace => true
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validate :ensure_provider_not_changed, :on => :update
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validates :provider, :presence => true, :inclusion => { :in => proc { self.providers } }
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validates :url, :presence => true
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scoped_search :on => :name, :complete_value => :true
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scoped_search :on => :type, :complete_value => :true
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scoped_search :on => :id, :complete_enabled => false, :only_explicit => true
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before_save :sanitize_url
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has_many_hosts
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has_many :images, :dependent => :destroy
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before_validation :set_attributes_hash
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has_many :compute_attributes, :dependent => :destroy
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has_many :compute_profiles, :through => :compute_attributes
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# The DB may contain compute resource from disabled plugins - filter them out here
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scope :live_descendants, lambda { where(:type => self.descendants.map(&:to_s)) unless Rails.env.development? }
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# with proc support, default_scope can no longer be chained
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# include all default scoping here
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default_scope lambda {
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with_taxonomy_scope do
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order("compute_resources.name")
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end
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}
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def self.register_provider(provider)
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name = provider.name.split('::').last
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return if supported_providers.values.include?(provider) || supported_providers.keys.include?(name)
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supported_providers[name] = provider.name
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end
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def self.providers
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supported_providers.reject { |p,c| !SETTINGS[p.downcase.to_sym] }.keys
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end
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def self.provider_class(name)
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supported_providers[name]
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end
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# allows to create a specific compute class based on the provider.
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def self.new_provider(args)
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raise ::Foreman::Exception.new(N_("must provide a provider")) unless provider = args.delete(:provider)
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self.providers.each do |p|
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return self.provider_class(p).constantize.new(args) if p.downcase == provider.downcase
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end
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raise ::Foreman::Exception.new N_("unknown provider")
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end
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def capabilities
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[]
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end
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# attributes that this provider can provide back to the host object
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def provided_attributes
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{:uuid => :identity}
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end
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def test_connection(options = {})
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valid?
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end
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def ping
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test_connection
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errors
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end
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def save_vm(uuid, attr)
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vm = find_vm_by_uuid(uuid)
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vm.attributes.merge!(attr.deep_symbolize_keys)
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vm.save
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end
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def to_label
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"#{name} (#{provider_friendly_name})"
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end
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# Override this method to specify provider name
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def self.provider_friendly_name
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self.name.split('::').last()
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end
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def provider_friendly_name
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self.class.provider_friendly_name
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end
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def image_param_name
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:image_id
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end
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def interfaces_attrs_name
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:interfaces
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end
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# returns a new fog server instance
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def new_vm(attr = {})
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test_connection
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client.servers.new vm_instance_defaults.merge(attr.to_hash.deep_symbolize_keys) if errors.empty?
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end
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# return fog new interface ( network adapter )
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def new_interface(attr = {})
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client.interfaces.new attr
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end
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# return a list of virtual machines
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def vms(opts = {})
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client.servers
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end
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def find_vm_by_uuid(uuid)
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client.servers.get(uuid) || raise(ActiveRecord::RecordNotFound)
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end
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def start_vm(uuid)
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find_vm_by_uuid(uuid).start
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end
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def stop_vm(uuid)
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find_vm_by_uuid(uuid).stop
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end
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def create_vm(args = {})
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options = vm_instance_defaults.merge(args.to_hash.deep_symbolize_keys)
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logger.debug("creating VM with the following options: #{options.inspect}")
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client.servers.create options
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end
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def destroy_vm(uuid)
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find_vm_by_uuid(uuid).destroy
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rescue ActiveRecord::RecordNotFound
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# if the VM does not exists, we don't really care.
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true
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end
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def provider
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read_attribute(:type).to_s.split('::').last
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end
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def provider=(value)
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if self.class.providers.include? value
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self.type = self.class.provider_class(value)
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else
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self.type = value #this will trigger validation error since value is one of supported_providers
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logger.debug("unknown provider for compute resource")
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end
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end
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def vm_instance_defaults
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ActiveSupport::HashWithIndifferentAccess.new(:name => "foreman_#{Time.now.to_i}")
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end
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def templates(opts = {})
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end
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def template(id,opts = {})
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end
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def update_required?(old_attrs, new_attrs)
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old_attrs.merge(new_attrs) do |k,old_v,new_v|
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update_required?(old_v, new_v) if old_v.is_a?(Hash)
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return true unless old_v == new_v
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new_v
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end
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false
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end
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def console(uuid = nil)
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raise ::Foreman::Exception.new(N_("%s console is not supported at this time"), provider_friendly_name)
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end
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# by default, our compute providers do not support updating an existing instance
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def supports_update?
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false
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end
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def available_images
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[]
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end
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def available_networks
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raise ::Foreman::Exception.new(N_("Not implemented for %s"), provider_friendly_name)
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end
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def available_clusters
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raise ::Foreman::Exception.new(N_("Not implemented for %s"), provider_friendly_name)
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end
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def available_folders
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raise ::Foreman::Exception.new(N_("Not implemented for %s"), provider_friendly_name)
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end
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def available_resource_pools
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raise ::Foreman::Exception.new(N_("Not implemented for %s"), provider_friendly_name)
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end
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def available_storage_domains(storage_domain = nil)
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raise ::Foreman::Exception.new(N_("Not implemented for %s"), provider_friendly_name)
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end
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# this method is overwritten for Libvirt
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def editable_network_interfaces?
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networks.any?
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end
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# this method is overwritten for Libvirt and VMware
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def set_console_password?
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false
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end
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alias_method :set_console_password, :set_console_password?
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# this method is overwritten for Libvirt and VMware
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def set_console_password=(setpw)
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self.attrs[:setpw] = nil
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end
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def compute_profile_for(id)
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compute_attributes.find_by_compute_profile_id(id)
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end
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def compute_profile_attributes_for(id)
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compute_profile_for(id).try(:vm_attrs) || {}
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end
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def vm_compute_attributes_for(uuid)
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vm = find_vm_by_uuid(uuid)
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vm_attrs = vm.attributes rescue {}
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vm_attrs = vm_attrs.reject{|k,v| k == :id }
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if vm.respond_to?(:volumes)
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volumes = vm.volumes || []
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vm_attrs[:volumes_attributes] = Hash[volumes.each_with_index.map { |volume, idx| [idx.to_s, volume.attributes] }]
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end
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vm_attrs
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rescue ActiveRecord::RecordNotFound
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logger.warn("VM with UUID '#{uuid}' not found on #{self}")
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{}
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end
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def user_data_supported?
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false
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end
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def image_exists?(image)
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true
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end
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protected
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def client
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raise ::Foreman::Exception.new N_("Not implemented")
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end
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def sanitize_url
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self.url.chomp!("/") unless url.empty?
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end
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def random_password
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return nil unless set_console_password?
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SecureRandom.hex(8)
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end
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def nested_attributes_for(type, opts)
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return [] unless opts
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opts = opts.dup #duplicate to prevent changing the origin opts.
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opts.delete("new_#{type}") || opts.delete("new_#{type}".to_sym) # delete template
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# convert our options hash into a sorted array (e.g. to preserve nic / disks order)
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opts = opts.sort { |l, r| l[0].to_s.sub('new_','').to_i <=> r[0].to_s.sub('new_','').to_i }.map { |e| Hash[e[1]] }
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opts.map do |v|
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if v[:"_delete"] == '1' && v[:id].blank?
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nil
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else
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v.deep_symbolize_keys # convert to symbols deeper hashes
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end
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end.compact
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end
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def associate_by(name, attributes)
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Host.authorized(:view_hosts, Host).joins(:primary_interface).
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where(:nics => {:primary => true}).
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where("nics.#{name}" => attributes).
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readonly(false).
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first
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end
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private
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def set_attributes_hash
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self.attrs ||= {}
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end
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def ensure_provider_not_changed
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errors.add(:provider, _("cannot be changed")) if self.type_changed?
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end
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end
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