module Backends::Opennebula::Compute
Constants
- COMPUTE_NINTF_REGEXP
- COMPUTE_SLINK_REGEXP
Public Instance Methods
Attaches a network to an existing compute instance, compute instance and network instance in question are identified by occi.core.source, occi.core.target attributes. If the requested instance cannot be linked, an error describing the problem must be raised, @see Backends::Errors.
@example
networkinterface = Occi::Infrastructure::Networkinterface.new compute_attach_network(networkinterface) #=> "65d4f65adfadf-ad2f4ad-daf5ad-f5ad4fad4ffdf"
@param networkinterface [Occi::Infrastructure::Networkinterface] NI instance containing necessary attributes @return [String] final identifier of the new network interface
# File lib/backends/opennebula/compute.rb, line 232 def compute_attach_network(networkinterface) compute_id = networkinterface.attributes['occi.core.source'].split('/').last virtual_machine = ::OpenNebula::VirtualMachine.new(::OpenNebula::VirtualMachine.build_xml(compute_id), @client) rc = virtual_machine.info check_retval(rc, Backends::Errors::ResourceRetrievalError) fail Backends::Errors::ResourceStateError, 'Given compute instance is not running!' unless virtual_machine.lcm_state_str == 'RUNNING' template_location = File.join(@options.templates_dir, 'compute_nic.erb') template = Erubis::Eruby.new(File.read(template_location)).evaluate(networkinterface: networkinterface) rc = virtual_machine.nic_attach(template) check_retval(rc, Backends::Errors::ResourceActionError) rc = virtual_machine.info check_retval(rc, Backends::Errors::ResourceRetrievalError) "compute_#{virtual_machine['ID']}_nic_#{virtual_machine['TEMPLATE/NIC[last()]/NIC_ID']}" end
Attaches a storage to an existing compute instance, compute instance and storage instance in question are identified by occi.core.source, occi.core.target attributes. If the requested instance cannot be linked, an error describing the problem must be raised, @see Backends::Errors.
@example
storagelink = Occi::Infrastructure::Storagelink.new compute_attach_storage(storagelink) #=> "65d4f65adfadf-ad2f4ad-daf5ad-f5ad4fad4ffdf"
@param storagelink [Occi::Infrastructure::Storagelink] SL instance containing necessary attributes @return [String] final identifier of the new storage link
# File lib/backends/opennebula/compute.rb, line 264 def compute_attach_storage(storagelink) compute_id = storagelink.attributes['occi.core.source'].split('/').last virtual_machine = ::OpenNebula::VirtualMachine.new(::OpenNebula::VirtualMachine.build_xml(compute_id), @client) rc = virtual_machine.info check_retval(rc, Backends::Errors::ResourceRetrievalError) fail Backends::Errors::ResourceStateError, 'Given compute instance is not running!' unless virtual_machine.lcm_state_str == 'RUNNING' template_location = File.join(@options.templates_dir, 'compute_disk.erb') template = Erubis::Eruby.new(File.read(template_location)).evaluate(storagelink: storagelink) rc = virtual_machine.disk_attach(template) check_retval(rc, Backends::Errors::ResourceActionError) rc = virtual_machine.info check_retval(rc, Backends::Errors::ResourceRetrievalError) "compute_#{virtual_machine['ID']}_disk_#{virtual_machine['TEMPLATE/DISK[last()]/DISK_ID']}" end
Instantiates a new compute instance from Occi::Infrastructure::Compute. ID given in the occi.core.id attribute is optional and can be changed inside this method. Final occi.core.id must be returned as a String. If the requested instance cannot be created, an error describing the problem must be raised, @see Backends::Errors.
@example
compute = Occi::Infrastructure::Compute.new compute_id = compute_create(compute) #=> "65d4f65adfadf-ad2f4ad-daf5ad-f5ad4fad4ffdf"
@param compute [Occi::Infrastructure::Compute] compute instance containing necessary attributes @return [String] final identifier of the new compute instance
# File lib/backends/opennebula/compute.rb, line 93 def compute_create(compute) compute_id = compute.id os_tpl_mixins = compute.mixins.get_related_to(Occi::Infrastructure::OsTpl.mixin.type_identifier) if !os_tpl_mixins.empty? compute_id = compute_create_with_os_tpl(compute) elsif !compute.links.empty? compute_id = compute_create_with_links(compute) else fail Backends::Errors::ResourceNotValidError, "Given instance contains neither an os_tpl " "mixin or links necessary to create a virtual machine!" end compute_id end
Deletes a specific compute instance, instance to be deleted is specified by an ID, this ID must match the occi.core.id attribute of the deleted instance. If the requested instance cannot be deleted, an error describing the problem must be raised, @see Backends::Errors.
@example
compute_delete("65d4f65adfadf-ad2f4ad-daf5ad-f5ad4fad4ffdf") #=> true
@param compute_id [String] an identifier of a compute instance to be deleted @return [true, false] result of the operation
# File lib/backends/opennebula/compute.rb, line 153 def compute_delete(compute_id) virtual_machine = ::OpenNebula::VirtualMachine.new(::OpenNebula::VirtualMachine.build_xml(compute_id), @client) rc = virtual_machine.info check_retval(rc, Backends::Errors::ResourceRetrievalError) if virtual_machine.lcm_state_str == 'RUNNING' rc = virtual_machine.shutdown else rc = virtual_machine.delete end check_retval(rc, Backends::Errors::ResourceActionError) true end
Deletes all compute instances, instances to be deleted must be filtered by the specified filter, filter (if set) must contain an Occi::Core::Mixins instance. If the requested instances cannot be deleted, an error describing the problem must be raised, @see Backends::Errors.
@example
compute_delete_all #=> true mixins = Occi::Core::Mixins.new << Occi::Core::Mixin.new compute_delete_all(mixins) #=> true
@param mixins [Occi::Core::Mixins] a filter containing mixins @return [true, false] result of the operation
# File lib/backends/opennebula/compute.rb, line 123 def compute_delete_all(mixins = nil) # TODO: impl filtering with mixins backend_compute_pool = ::OpenNebula::VirtualMachinePool.new(@client) rc = backend_compute_pool.info_all check_retval(rc, Backends::Errors::ResourceRetrievalError) backend_compute_pool.each do |backend_compute| if backend_compute.lcm_state_str == 'RUNNING' rc = backend_compute.shutdown else rc = backend_compute.delete end check_retval(rc, Backends::Errors::ResourceActionError) end true end
Dettaches a network from an existing compute instance, the compute instance in question must be identifiable using the networkinterface ID passed as an argument. If the requested link instance cannot be detached, an error describing the problem must be raised, @see Backends::Errors.
@example
compute_detach_network("65d4f65adfadf-ad2f4ad-daf5ad-f5ad4fad4ffdf") #=> true
@param networkinterface_id [String] network interface identifier @return [true, false] result of the operation
# File lib/backends/opennebula/compute.rb, line 295 def compute_detach_network(networkinterface_id) matched = COMPUTE_NINTF_REGEXP.match(networkinterface_id) fail Backends::Errors::IdentifierNotValidError, 'ID of the given networkinterface is not valid!' unless matched virtual_machine = ::OpenNebula::VirtualMachine.new(::OpenNebula::VirtualMachine.build_xml(matched[:compute_id]), @client) rc = virtual_machine.info check_retval(rc, Backends::Errors::ResourceRetrievalError) fail Backends::Errors::ResourceStateError, 'Given compute instance is not running!' unless virtual_machine.lcm_state_str == 'RUNNING' rc = virtual_machine.nic_detach(matched[:compute_nic_id].to_i) check_retval(rc, Backends::Errors::ResourceActionError) true end
Dettaches a storage from an existing compute instance, the compute instance in question must be identifiable using the storagelink ID passed as an argument. If the requested link instance cannot be detached, an error describing the problem must be raised, @see Backends::Errors.
@example
compute_detach_storage("65d4f65adfadf-ad2f4ad-daf5ad-f5ad4fad4ffdf") #=> true
@param storagelink_id [String] storage link identifier @return [true, false] result of the operation
# File lib/backends/opennebula/compute.rb, line 321 def compute_detach_storage(storagelink_id) matched = COMPUTE_SLINK_REGEXP.match(storagelink_id) fail Backends::Errors::IdentifierNotValidError, 'ID of the given storagelink is not valid!' unless matched virtual_machine = ::OpenNebula::VirtualMachine.new(::OpenNebula::VirtualMachine.build_xml(matched[:compute_id]), @client) rc = virtual_machine.info check_retval(rc, Backends::Errors::ResourceRetrievalError) fail Backends::Errors::ResourceStateError, 'Given compute instance is not running!' unless virtual_machine.lcm_state_str == 'RUNNING' rc = virtual_machine.disk_detach(matched[:compute_disk_id].to_i) check_retval(rc, Backends::Errors::ResourceActionError) true end
Gets a specific compute instance as Occi::Infrastructure::Compute. ID given as an argument must match the occi.core.id attribute inside the returned Occi::Infrastructure::Compute instance, however it is possible to implement internal mapping to a platform-specific identifier.
@example
compute = compute_get('65d4f65adfadf-ad2f4ad-daf5ad-f5ad4fad4ffdf') #=> #<Occi::Infrastructure::Compute>
@param compute_id [String] OCCI identifier of the requested compute instance @return [Occi::Infrastructure::Compute, nil] a compute instance or `nil`
# File lib/backends/opennebula/compute.rb, line 71 def compute_get(compute_id) virtual_machine = ::OpenNebula::VirtualMachine.new(::OpenNebula::VirtualMachine.build_xml(compute_id), @client) rc = virtual_machine.info check_retval(rc, Backends::Errors::ResourceRetrievalError) fail Backends::Errors::ResourceNotFoundError, "Instance with ID #{compute_id} does not exist!" if virtual_machine.state_str == 'DONE' compute_parse_backend_obj(virtual_machine) end
Gets a network from an existing compute instance, the compute instance in question must be identifiable using the networkinterface ID passed as an argument. If the requested link instance cannot be found, an error describing the problem must be raised, @see Backends::Errors.
@example
compute_get_network("65d4f65adfadf-ad2f4ad-daf5ad-f5ad4fad4ffdf") #=> #<Occi::Infrastructure::Networkinterface>
@param networkinterface_id [String] network interface identifier @return [Occi::Infrastructure::Networkinterface] instance of the found networkinterface
# File lib/backends/opennebula/compute.rb, line 348 def compute_get_network(networkinterface_id) matched = COMPUTE_NINTF_REGEXP.match(networkinterface_id) fail Backends::Errors::IdentifierNotValidError, 'ID of the given networkinterface is not valid!' unless matched intf = compute_get(matched[:compute_id]).links.to_a.select { |l| l.id == networkinterface_id } fail Backends::Errors::ResourceNotFoundError, 'Networkinterface with the given ID does not exist!' if intf.blank? intf.first end
Gets a storage from an existing compute instance, the compute instance in question must be identifiable using the storagelink ID passed as an argument. If the requested link instance cannot be detached, an error describing the problem must be raised, @see Backends::Errors.
@example
compute_get_storage("65d4f65adfadf-ad2f4ad-daf5ad-f5ad4fad4ffdf") #=> #<Occi::Infrastructure::Storagelink>
@param storagelink_id [String] storage link identifier @return [Occi::Infrastructure::Storagelink] instance of the found storagelink
# File lib/backends/opennebula/compute.rb, line 369 def compute_get_storage(storagelink_id) matched = COMPUTE_SLINK_REGEXP.match(storagelink_id) fail Backends::Errors::IdentifierNotValidError, 'ID of the given storagelink is not valid!' unless matched link = compute_get(matched[:compute_id]).links.to_a.select { |l| l.id == storagelink_id } fail Backends::Errors::ResourceNotFoundError, 'Storagelink with the given ID does not exist!' if link.blank? link.first end
Gets all compute instances, instances must be filtered by the specified filter, filter (if set) must contain an Occi::Core::Mixins instance. Returned collection must contain Occi::Infrastructure::Compute instances wrapped in Occi::Core::Resources.
@example
computes = compute_list #=> #<Occi::Core::Resources> computes.first #=> #<Occi::Infrastructure::Compute> mixins = Occi::Core::Mixins.new << Occi::Core::Mixin.new computes = compute_list(mixins) #=> #<Occi::Core::Resources>
@param mixins [Occi::Core::Mixins] a filter containing mixins @return [Occi::Core::Resources] a collection of compute instances
# File lib/backends/opennebula/compute.rb, line 46 def compute_list(mixins = nil) # TODO: impl filtering with mixins compute = Occi::Core::Resources.new backend_compute_pool = ::OpenNebula::VirtualMachinePool.new(@client) rc = backend_compute_pool.info_all check_retval(rc, Backends::Errors::ResourceRetrievalError) backend_compute_pool.each do |backend_compute| compute << compute_parse_backend_obj(backend_compute) end compute end
Gets all compute instance IDs, no details, no duplicates. Returned identifiers must correspond to those found in the occi.core.id attribute of Occi::Infrastructure::Compute instances.
@example
compute_list_ids #=> [] compute_list_ids #=> ["65d4f65adfadf-ad2f4ad-daf5ad-f5ad4fad4ffdf", "ggf4f65adfadf-adgg4ad-daggad-fydd4fadyfdfd"]
@param mixins [Occi::Core::Mixins] a filter containing mixins @return [Array<String>] IDs for all available compute instances
# File lib/backends/opennebula/compute.rb, line 18 def compute_list_ids(mixins = nil) # TODO: impl filtering with mixins backend_compute_pool = ::OpenNebula::VirtualMachinePool.new(@client) rc = backend_compute_pool.info_all check_retval(rc, Backends::Errors::ResourceRetrievalError) compute = [] backend_compute_pool.each do |backend_compute| compute << backend_compute['ID'] end compute end
Partially updates an existing compute instance, instance to be updated is specified by compute_id. If the requested instance cannot be updated, an error describing the problem must be raised, @see Backends::Errors.
@example
attributes = Occi::Core::Attributes.new mixins = Occi::Core::Mixins.new links = Occi::Core::Links.new compute_partial_update(compute_id, attributes, mixins, links) #=> true
@param compute_id [String] unique identifier of a compute instance to be updated @param attributes [Occi::Core::Attributes] a collection of attributes to be updated @param mixins [Occi::Core::Mixins] a collection of mixins to be added @param links [Occi::Core::Links] a collection of links to be added @return [true, false] result of the operation
# File lib/backends/opennebula/compute.rb, line 185 def compute_partial_update(compute_id, attributes = nil, mixins = nil, links = nil) # TODO: impl fail Backends::Errors::MethodNotImplementedError, 'Partial updates are currently not supported!' end
Triggers an action on an existing compute instance, the compute instance in question is identified by a compute instance ID, action is identified by the action.term attribute of the action instance passed as an argument. If the requested action cannot be triggered, an error describing the problem must be raised, @see Backends::Errors.
@example
action_instance = Occi::Core::ActionInstance.new compute_trigger_action("65d4f65adfadf-ad2f4ad-daf5ad-f5ad4fad4ffdf", action_instance) #=> true
@param compute_id [String] compute instance identifier @param action_instance [Occi::Core::ActionInstance] action to be triggered @return [true, false] result of the operation
# File lib/backends/opennebula/compute.rb, line 412 def compute_trigger_action(compute_id, action_instance) case action_instance.action.type_identifier when 'http://schemas.ogf.org/occi/infrastructure/compute/action#stop' compute_trigger_action_stop(compute_id, action_instance.attributes) when 'http://schemas.ogf.org/occi/infrastructure/compute/action#start' compute_trigger_action_start(compute_id, action_instance.attributes) when 'http://schemas.ogf.org/occi/infrastructure/compute/action#restart' compute_trigger_action_restart(compute_id, action_instance.attributes) when 'http://schemas.ogf.org/occi/infrastructure/compute/action#suspend' compute_trigger_action_suspend(compute_id, action_instance.attributes) else fail Backends::Errors::ActionNotImplementedError, "Action #{action_instance.action.type_identifier.inspect} is not implemented!" end true end
Triggers an action on all existing compute instance, instances must be filtered by the specified filter, filter (if set) must contain an Occi::Core::Mixins instance, action is identified by the action.term attribute of the action instance passed as an argument. If the requested action cannot be triggered, an error describing the problem must be raised, @see Backends::Errors.
@example
action_instance = Occi::Core::ActionInstance.new mixins = Occi::Core::Mixins.new << Occi::Core::Mixin.new compute_trigger_action_on_all(action_instance, mixin) #=> true
@param action_instance [Occi::Core::ActionInstance] action to be triggered @param mixins [Occi::Core::Mixins] a filter containing mixins @return [true, false] result of the operation
# File lib/backends/opennebula/compute.rb, line 393 def compute_trigger_action_on_all(action_instance, mixins = nil) compute_list_ids(mixins).each { |cmpt| compute_trigger_action(cmpt, action_instance) } true end
Updates an existing compute instance, instance to be updated is specified using the occi.core.id attribute of the instance passed as an argument. If the requested instance cannot be updated, an error describing the problem must be raised, @see Backends::Errors.
@example
compute = Occi::Infrastructure::Compute.new compute_update(compute) #=> true
@param compute [Occi::Infrastructure::Compute] instance containing updated information @return [true, false] result of the operation
# File lib/backends/opennebula/compute.rb, line 201 def compute_update(compute) virtual_machine = ::OpenNebula::VirtualMachine.new(::OpenNebula::VirtualMachine.build_xml(compute.id), @client) rc = virtual_machine.info check_retval(rc, Backends::Errors::ResourceRetrievalError) fail Backends::Errors::ResourceStateError, 'Given compute instance is not powered off!' unless virtual_machine.state_str == 'POWEROFF' resize_template = '' resize_template << "VCPU = #{compute.cores.to_i}" if compute.cores resize_template << "CPU = #{compute.speed.to_f * (compute.cores || virtual_machine['TEMPLATE/VCPU']).to_i}" if compute.speed resize_template << "MEMORY = #{(compute.memory.to_f * 1024).to_i}" if compute.memory return false if resize_template.blank? rc = virtual_machine.resize(resize_template, true) check_retval(rc, Backends::Errors::ResourceActionError) true end