Class: ForemanXen::Xenserver

Inherits:
ComputeResource
  • Object
show all
Defined in:
app/models/foreman_xen/xenserver.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.model_name ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 31

def self.model_name
  ComputeResource.model_name
end

Instance Method Details

#associated_host(vm) ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 121

def associated_host(vm)
  associate_by("mac", vm.interfaces.map(&:mac))
end

#builtin_templates ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 116

def builtin_templates
  tmps = client.servers.builtin_templates.select { |t| !t.is_a_snapshot } rescue []
  tmps.sort { |a, b| a.name <=> b.name }
end

#capabilities ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 12

def capabilities
  [:build]
end

#console(uuid) ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 270

def console uuid
  vm = find_vm_by_uuid(uuid)
  raise 'VM is not running!' unless vm.ready?

  console = vm.service.consoles.find { |c| c.__vm == vm.reference && c.protocol == 'rfb' }
  raise "No console fore vm #{vm.name}" if console == nil

  session_ref = (vm.service.instance_variable_get :@connection).instance_variable_get :@credentials
  fullURL     = "#{console.location}&session_id=#{session_ref}"
  tunnel      = VNCTunnel.new fullURL
  tunnel.start
  logger.info 'VNCTunnel started'
  WsProxy.start(:host => tunnel.host, :host_port => tunnel.port, :password => '').merge(:type => 'vnc', :name => vm.name)

rescue Error => e
  logger.warn e
  raise e
end

#create_vm(args = {}) ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 156

def create_vm(args = {})
  custom_template_name  = args[:custom_template_name]
  builtin_template_name = args[:builtin_template_name]
  raise 'you can select at most one template type' if builtin_template_name != '' and custom_template_name != ''
  begin
    vm = nil
    if custom_template_name != ''
      vm = create_vm_from_custom args
    else
      vm = create_vm_from_builtin args
    end
    vm.set_attribute('name_description', 'Provisioned by Foreman')
    cpus = args[:vcpus_max]
    if vm.vcpus_max.to_i < cpus.to_i
      vm.set_attribute('VCPUs_max', cpus)
      vm.set_attribute('VCPUs_at_startup', cpus)
    else
      vm.set_attribute('VCPUs_at_startup', cpus)
      vm.set_attribute('VCPUs_max', cpus)
    end
    vm.refresh
    return vm
  rescue => e
    logger.info e
    logger.info e.backtrace.join("\n")
    return false
  end
end

#create_vm_from_builtin(args) ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 227

def create_vm_from_builtin(args)

  host               = client.hosts.first
  storage_repository = client.storage_repositories.find { |sr| sr.uuid == "#{args[:VBDs][:sr_uuid]}" }

  gb   = 1073741824 #1gb in bytes
  size = args[:VBDs][:physical_size].to_i * gb
  vdi  = client.vdis.create :name               => "#{args[:name]}-disk1",
                            :storage_repository => storage_repository,
                            :description        => "#{args[:name]}-disk_1",
                            :virtual_size       => size.to_s

  mem_max      = args[:memory_max]
  mem_min      = args[:memory_min]
  other_config = {}
  if args[:builtin_template_name] != ''
    template     = client.servers.builtin_templates.find { |tmp| tmp.name == args[:builtin_template_name] }
    other_config = template.other_config
    other_config.delete 'disks'
    other_config.delete 'default_template'
    other_config['mac_seed'] = SecureRandom.uuid
  end
  vm = client.servers.new :name               => args[:name],
                          :affinity           => host,
                          :pv_bootloader      => '',
                          :hvm_boot_params    => { :order => 'dnc' },
                          :other_config       => other_config,
                          :memory_static_max  => mem_max,
                          :memory_static_min  => mem_min,
                          :memory_dynamic_max => mem_max,
                          :memory_dynamic_min => mem_min

  vm.save :auto_start => false
  client.vbds.create :server => vm, :vdi => vdi

  create_network(vm, args)

  vm.provision
  vm.set_attribute('HVM_boot_policy', 'BIOS order')
  vm.refresh
  vm
end

#create_vm_from_custom(args) ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 185

def create_vm_from_custom(args)
  mem_max = args[:memory_max]
  mem_min = args[:memory_min]

  raise 'Memory max cannot be lower than Memory min' if mem_min.to_i > mem_max.to_i
  vm = client.servers.new :name          => args[:name],
                          :template_name => args[:custom_template_name]

  vm.save :auto_start => false

  vm.provision

  vm.vifs.first.destroy rescue nil

  create_network(vm, args)

  args['xenstore']['vm-data']['ifs']['0']['mac'] = vm.vifs.first.mac
  xenstore_data                                  = xenstore_hash_flatten(args['xenstore'])

  vm.set_attribute('xenstore_data', xenstore_data)
  if vm.memory_static_max.to_i < mem_max.to_i
    vm.set_attribute('memory_static_max', mem_max)
    vm.set_attribute('memory_dynamic_max', mem_max)
    vm.set_attribute('memory_dynamic_min', mem_min)
    vm.set_attribute('memory_static_min', mem_min)
  else
    vm.set_attribute('memory_static_min', mem_min)
    vm.set_attribute('memory_dynamic_min', mem_min)
    vm.set_attribute('memory_dynamic_max', mem_max)
    vm.set_attribute('memory_static_max', mem_max)
  end

  disks = vm.vbds.select { |vbd| vbd.type == 'Disk' }
  disks.sort! { |a, b| a.userdevice <=> b.userdevice }
  i = 0
  disks.each do |vbd|
    vbd.vdi.set_attribute('name-label', "#{args[:name]}_#{i}")
    i+=1
  end
  vm
end

#custom_templates ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 111

def custom_templates
  tmps = client.servers.custom_templates.select { |t| !t.is_a_snapshot } rescue []
  tmps.sort { |a, b| a.name <=> b.name }
end

#destroy_vm(ref, args = {}) ⇒ Object

we default to destroy the VM’s storage as well.



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# File 'app/models/foreman_xen/xenserver.rb', line 25

def destroy_vm(ref, args = {})
  find_vm_by_uuid(ref).destroy
rescue ActiveRecord::RecordNotFound
  true
end

#find_vm_by_uuid(ref) ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 16

def find_vm_by_uuid(ref)
  client.servers.get(ref)
rescue Fog::XenServer::RequestFailed => e
  raise(ActiveRecord::RecordNotFound) if e.message.include?('HANDLE_INVALID')
  raise(ActiveRecord::RecordNotFound) if e.message.include?('VM.get_record: ["SESSION_INVALID"')
  raise e
end

#get_snapshots ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 137

def get_snapshots
  tmps = client.servers.templates.select { |t| t.is_a_snapshot } rescue []
  tmps.sort { |a, b| a.name <=> b.name }
end

#get_snapshots_for_vm(vm) ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 125

def get_snapshots_for_vm(vm)
  if vm.snapshots.empty?
    return []
  end
  tmps = client.servers.templates.select { |t| t.is_a_snapshot } rescue []
  retval = []
  tmps.each do | snapshot |
    retval << snapshot if vm.snapshots.include?(snapshot.reference)
  end
  retval
end

#hypervisor ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 289

def hypervisor
  client.hosts.first
end

#interfaces ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 98

def interfaces
  client.interfaces rescue []
end

#max_cpu_count ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 35

def max_cpu_count
  ## 16 is a max number of cpus per vm according to XenServer doc
  [hypervisor.host_cpus.size, 16].min
end

#max_memory ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 40

def max_memory
  xenServerMaxDoc = 128*1024*1024*1024
  [hypervisor.metrics.memory_total.to_i, xenServerMaxDoc].min
rescue => e
  logger.debug "unable to figure out free memory, guessing instead due to:#{e}"
  16*1024*1024*1024
end

#networks ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 102

def networks
  networks = client.networks rescue []
  networks.sort { |a, b| a.name <=> b.name }
end

#new_nic(attr = {}) ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 56

def new_nic(attr={})
  client.networks.new attr
end

#new_vm(attr = {}) ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 142

def new_vm(attr={})

  test_connection
  return unless errors.empty?
  opts = vm_instance_defaults.merge(attr.to_hash).symbolize_keys

  [:networks, :volumes].each do |collection|
    nested_attrs     = opts.delete("#{collection}_attributes".to_sym)
    opts[collection] = nested_attributes_for(collection, nested_attrs) if nested_attrs
  end
  opts.reject! { |_, v| v.nil? }
  client.servers.new opts
end

#new_volume(attr = {}) ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 60

def new_volume(attr={})
  client.storage_repositories.new attr
end

#provided_attributes ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 5

def provided_attributes
  super.merge(
    { :uuid => :reference,
      :mac  => :mac
    })
end

#storage_pools ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 64

def storage_pools
    results = Array.new
	
    storages = client.storage_repositories.select { |sr| sr.type!= 'udev' && sr.type!= 'iso'} rescue []
	hosts = client.hosts

	storages.each do |sr|
		subresults = Hash.new()
		found = 0
		hosts.each do |host|

			if (sr.reference == host.suspend_image_sr) 
found = 1
subresults[:name] 		= sr.name
subresults[:display_name]	= sr.name + '(' +  host.hostname + ')'
subresults[:uuid]		= sr.uuid
break
			end

		end
		
		if (found==0) 
			subresults[:name] 		= sr.name
			subresults[:display_name] 	= sr.name
			subresults[:uuid]		= sr.uuid
		end
		results.push(subresults)
	end

	results.sort_by!{|item| item[:display_name] }
	return results

end

#templates ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 107

def templates
  client.servers.templates rescue []
end

#test_connection(options = {}) ⇒ Object 



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# File 'app/models/foreman_xen/xenserver.rb', line 48

def test_connection(options = {})
  super
  errors[:url].empty? and hypervisor
rescue => e
  disconnect rescue nil
  errors[:base] << e.message
end