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module Orchestration::TFTP
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def self.included(base)
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base.send :include, InstanceMethods
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base.class_eval do
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attr_reader :tftp
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attr_accessor :request_url
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after_validation :initialize_tftp, :queue_tftp
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before_destroy :initialize_tftp, :queue_tftp_destroy
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# required for pxe template url helpers
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include ActionController::UrlWriter
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end
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end
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module InstanceMethods
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def tftp?
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!subnet.nil? and !subnet.tftp.nil? and !subnet.tftp.url.empty?
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end
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protected
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def initialize_tftp
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return unless tftp?
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@tftp = ProxyAPI::TFTP.new :url => subnet.tftp.url
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rescue => e
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failure "Failed to initialize the TFTP proxy: #{e}"
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end
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# Adds the host to the forward and reverse TFTP zones
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# +returns+ : Boolean true on success
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def setTFTP
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logger.info "Add the TFTP configuration for #{name}"
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tftp.set mac, :syslinux_config => generate_pxe_template
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rescue => e
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failure "Failed to set TFTP: #{e}"
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end
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# Removes the host from the forward and reverse TFTP zones
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# +returns+ : Boolean true on success
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def delTFTP
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logger.info "Delete the TFTP configuration for #{name}"
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tftp.delete mac
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rescue => e
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failure "Failed to delete TFTP: #{e}"
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end
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def setTFTPBootFiles
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logger.info "Fetching required TFTP boot files for #{name}"
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valid = true
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operatingsystem.pxe_files(medium, architecture).each do |bootfile_info|
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for prefix, path in bootfile_info do
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valid = false unless tftp.fetch_boot_file(:prefix => prefix.to_s, :path => path)
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end
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end
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failure "Failed to fetch boot files" unless valid
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valid
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rescue => e
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failure "Failed to fetch boot files: #{e}"
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end
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#empty method for rollbacks
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def delTFTPBootFiles
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end
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private
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def generate_pxe_template
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# this is the only place we generate a template not via a web request
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# therefore some workaround is required to "render" the template.
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prefix = operatingsystem.pxe_prefix(arch)
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pxefiles = eval "#{os.family}::PXEFILES"
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@kernel = "#{prefix}-#{pxefiles[:kernel]}"
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@initrd = "#{prefix}-#{pxefiles[:initrd]}"
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pxe = configTemplate("PXELinux").template
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ERB.new(pxe).result(binding)
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rescue => e
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failure "Failed to generate PXELinux template: #{e}"
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end
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#returns the URL for Foreman based on the required action
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def foreman_url(action = "provision")
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url_for :only_path => false, :controller => "unattended", :action => action, :host => request_url
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end
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def queue_tftp
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return unless tftp? and errors.empty?
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new_record? ? queue_tftp_create : queue_tftp_update
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end
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def queue_tftp_create
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# nothing to do upon creation
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end
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def queue_tftp_update
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if build == true and old.build == false
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queue.create(:name => "TFTP Settings for #{self}", :priority => 20,
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:action => [self, :setTFTP])
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queue.create(:name => "Fetch TFTP boot files for #{self}", :priority => 25,
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:action => [self, :setTFTPBootFiles])
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end
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if build == false and old.build == true
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queue_tftp_destroy
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end
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end
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def queue_tftp_destroy
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return unless tftp? and errors.empty?
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queue.create(:name => "TFTP Settings for #{self}", :priority => 20,
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:action => [self, :delTFTP])
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end
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end
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end
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