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module PxeLoaderSupport
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extend ActiveSupport::Concern
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PXE_KINDS = {
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:PXELinux => /^(pxelinux|PXELinux).*/,
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:PXEGrub => /^(grub\/|Grub ).*/,
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:PXEGrub2 => /^(grub2|Grub2).*/
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}.with_indifferent_access.freeze
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# preference order is defined in Operatingsystem#template_kinds
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PREFERRED_KINDS = {
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:PXELinux => "PXELinux BIOS",
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:PXEGrub2 => "Grub2 UEFI",
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:PXEGrub => "Grub UEFI"
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}.with_indifferent_access.freeze
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class_methods do
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def all_loaders_map(precision = 'x64')
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{
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"None" => "",
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"PXELinux BIOS" => "pxelinux.0",
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"PXELinux UEFI" => "pxelinux.efi",
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"Grub UEFI" => "grub/grub#{precision}.efi",
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"Grub2 UEFI" => "grub2/grub#{precision}.efi",
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"Grub2 UEFI SecureBoot" => "grub2/shim#{precision}.efi"
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}.freeze
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end
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def all_loaders
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all_loaders_map.keys.freeze
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end
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def valid_loader_name?(pxe_loader)
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self.all_loaders.include?(pxe_loader)
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end
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def firmware_type(pxe_loader)
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case pxe_loader
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when 'None'
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:none
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when /UEFI/
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:uefi
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else
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:bios
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end
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end
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end
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def default_boot_filename
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"pxelinux.0"
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end
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# Finds template kind for given loader filename or name or nil for "None" or ""
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def pxe_loader_kind(host)
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PXE_KINDS.find{|k, v| v.match(host.pxe_loader)}.try(:first).try(:to_sym)
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end
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# Suggested PXE loader when template kind is available (PXEGrub2, then PXELinux, then PXEGrub in this order)
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def preferred_loader
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associated_templates = os_default_templates.map(&:template_kind).compact.map(&:name)
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template_kinds.each do |loader|
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return PREFERRED_KINDS[loader] if associated_templates.include? loader
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end
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nil
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end
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end
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