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module Orchestration::DHCP
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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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after_validation :queue_dhcp
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before_destroy :queue_dhcp_destroy
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validate :ip_belongs_to_subnet?, :valid_jumpstart_model
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end
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end
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module InstanceMethods
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def dhcp?
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!subnet.nil? and subnet.dhcp? and managed?
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end
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def sp_dhcp?
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sp_valid? and !sp_subnet.nil? and sp_subnet.dhcp?
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end
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def dhcp_record
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return unless dhcp? or @dhcp_record
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@dhcp_record ||= jumpstart? ? Net::DHCP::SparcRecord.new(dhcp_attrs) : Net::DHCP::Record.new(dhcp_attrs)
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end
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def sp_dhcp_record
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return unless sp_dhcp? or @sp_dhcp_record
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@sp_dhcp_record ||= Net::DHCP::Record.new sp_dhcp_attrs
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end
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protected
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def set_dhcp
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dhcp_record.create
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end
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def set_dhcp_conflicts
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dhcp_record.conflicts.each{|conflict| conflict.create}
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end
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def set_sp_dhcp
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sp_dhcp_record.create
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end
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def set_sp_dhcp_conflicts
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sp_dhcp_record.conflicts.each{|conflict| conflict.create}
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end
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def del_dhcp
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dhcp_record.destroy
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end
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def del_dhcp_conflicts
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dhcp_record.conflicts.each{|conflict| conflict.destroy}
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end
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def del_sp_dhcp
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sp_dhcp_record.destroy
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end
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def del_sp_dhcp_conflicts
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sp_dhcp_record.conflicts.each{|conflict| conflict.destroy}
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end
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private
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# returns a hash of dhcp record settings
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def dhcp_attrs
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return unless dhcp?
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dhcp_attr = { :name => name, :filename => operatingsystem.boot_filename(self),
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:ip => ip, :mac => mac, :hostname => name, :proxy => proxy_for_host,
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:network => subnet.network, :nextServer => boot_server }
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if jumpstart?
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jumpstart_arguments = os.jumpstart_params self, model.vendor_class
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dhcp_attr.merge! jumpstart_arguments unless jumpstart_arguments.empty?
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end
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dhcp_attr
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end
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# returns a hash of service processor / ilo dhcp record settings
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def sp_dhcp_attrs
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return unless sp_dhcp?
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{ :hostname => sp_name, :name => sp_name, :ip => sp_ip, :mac => sp_mac, :proxy => proxy_for_sp, :network => sp_subnet.network }
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end
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# where are we booting from
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def boot_server
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# if we don't manage tftp at all, we dont create a next-server entry.
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return unless tftp?
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# first try to ask our TFTP server for its boot server
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bs = tftp.bootServer
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# if that failed, trying to guess out tftp next server based on the smart proxy hostname
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bs ||= URI.parse(subnet.tftp.url).host
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# now convert it into an ip address (see http://theforeman.org/issues/show/1381)
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return to_ip_address(bs) if bs.present?
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failure "Unable to determine the host's boot server. The DHCP smart proxy failed to provide this information and this subnet is not provided with TFTP services."
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rescue => e
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failure "failed to detect boot server: #{e}"
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end
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def queue_dhcp
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return unless (dhcp? or (old and old.dhcp?) or sp_dhcp? or (old and old.sp_dhcp?)) and orchestration_errors?
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queue_remove_dhcp_conflicts if dhcp_conflict_detected?
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new_record? ? queue_dhcp_create : queue_dhcp_update
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end
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def queue_dhcp_create
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logger.debug "Scheduling new DHCP reservations"
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queue.create(:name => "Create DHCP Settings for #{self}", :priority => 10,
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:action => [self, :set_dhcp]) if dhcp?
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queue.create(:name => "Create DHCP Settings for #{sp_name}", :priority => 15,
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:action => [self, :set_sp_dhcp]) if sp_dhcp?
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end
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def queue_dhcp_update
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if dhcp_update_required?
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logger.debug("Detected a changed required for DHCP record")
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queue.create(:name => "Remove DHCP Settings for #{old}", :priority => 5,
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:action => [old, :del_dhcp]) if old.dhcp?
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queue.create(:name => "Create DHCP Settings for #{self}", :priority => 10,
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:action => [self, :set_dhcp]) if dhcp?
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end
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if sp_dhcp_update_required?
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logger.debug("Detected a changed required for BMC DHCP record")
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queue.create(:name => "Remove DHCP Settings for #{old.sp_name}", :priority => 5,
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:action => [old, :del_sp_dhcp]) if old.sp_dhcp?
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queue.create(:name => "Create DHCP Settings for #{sp_name}", :priority => 15,
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:action => [self, :set_sp_dhcp]) if sp_dhcp?
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end
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end
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# do we need to update our dhcp reservations
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def dhcp_update_required?
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# IP Address / name changed
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return true if ((old.ip != ip) or (old.name != name) or (old.mac != mac) or (old.subnet != subnet))
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# Handle jumpstart
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if jumpstart?
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if !old.build? or (old.medium != medium or old.arch != arch) or
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(os and old.os and (old.os.name != os.name or old.os != os))
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return true
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end
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end
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false
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end
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def sp_dhcp_update_required?
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return true if ((old.sp_name != sp_name) or (old.sp_mac != sp_mac) or (old.sp_ip != sp_ip) or (old.sp_subnet != sp_subnet))
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false
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end
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def queue_dhcp_destroy
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return unless dhcp? and errors.empty?
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queue.create(:name => "Remove DHCP Settings for #{self}", :priority => 5,
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:action => [self, :del_dhcp])
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queue.create(:name => "Remove DHCP Settings for #{sp_name}", :priority => 5,
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:action => [self, :del_sp_dhcp]) if sp_valid?
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true
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end
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def queue_remove_dhcp_conflicts
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return unless dhcp? and errors.any? and errors.are_all_conflicts?
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return unless overwrite?
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logger.debug "Scheduling DHCP conflicts removal"
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queue.create(:name => "DHCP conflicts removal for #{self}", :priority => 5,
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:action => [self, :del_dhcp_conflicts]) if dhcp_record and dhcp_record.conflicting?
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queue.create(:name => "DHCP conflicts removal for #{sp_name}", :priority => 5,
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:action => [self, :del_sp_dhcp_conflicts]) if sp_valid? and sp_dhcp and sp_dhcp_record.conflicting?
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end
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def ip_belongs_to_subnet?
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return if subnet.nil? or ip.nil?
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return unless dhcp?
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unless subnet.contains? ip
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errors.add :ip, "Does not match selected Subnet"
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return false
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end
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rescue
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# probably an invalid ip / subnet were entered
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# we let other validations handle that
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end
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def valid_jumpstart_model
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return unless jumpstart?
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errors.add :model_id, "is required for Solaris SPARC deployment" if model.blank?
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errors.add :model_id, "Has an unknown vendor class" if model and model.vendor_class.empty?
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false
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end
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def proxy_for_host
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subnet.dhcp_proxy
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end
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def proxy_for_sp
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sp_subnet.dhcp_proxy
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end
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def dhcp_conflict_detected?
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# we can't do any dhcp based validations when our MAC address is defined afterwards (e.g. in vm creation)
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return false if mac.blank? or name.blank?
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# This is an expensive operation and we will only do it if the DNS validation failed. This will ensure
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# that we report on both DNS and DHCP conflicts when we offer to remove collisions. It retrieves and
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# caches the conflicting records so we must always do it when overwriting
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return false unless (errors.any? and errors.are_all_conflicts?) or overwrite?
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return false unless dhcp?
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status = true
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status = failure("DHCP record #{dhcp_record.conflicts[0]} already exists", nil, :conflict) if dhcp_record and dhcp_record.conflicting?
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status &= failure("DHCP record #{sp_dhcp_record.conflicts[0]} already exists", nil, :conflict) if sp_dhcp? and sp_dhcp_record and sp_dhcp_record.conflicting?
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overwrite? ? errors.are_all_conflicts? : status
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end
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end
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end
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