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module Net::DHCP
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class Record < Net::Record
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attr_accessor :ip, :mac, :network, :nextServer, :filename
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def initialize opts = { }
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super(opts)
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self.mac = validate_mac self.mac
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self.network = validate_network self.network
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self.ip = validate_ip self.ip
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end
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def to_s
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"#{hostname}-#{mac}/#{ip}"
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end
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# Deletes the DHCP entry
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def destroy
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logger.info "Delete DHCP reservation for #{to_s}"
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# it is safe to call destroy even if the entry does not exists, so we don't bother with validating anything here.
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proxy.delete network, mac
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end
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# Create a DHCP entry
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def create
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logger.info "Create DHCP reservation for #{to_s}"
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begin
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raise "Must define a hostname" if hostname.blank?
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proxy.set network, attrs
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rescue RestClient::Conflict
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logger.warn "Conflicting DHCP reservation for #{to_s} detected"
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e = Net::Conflict.new
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e.type = "dhcp"
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e.expected = to_s
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e.actual = conflicts
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e.message = "in DHCP detected - expected #{to_s}, found #{conflicts.map(&:to_s).join(', ')}"
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raise e
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end
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end
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# Returns an array of record objects which are conflicting with our own
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def conflicts
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conflicts = [proxy.record(network, mac), proxy.record(network, ip)].delete_if { |c| c == self }.compact
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@conflicts ||= conflicts.uniq {|c| c.attrs}
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end
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# Verifies that are record already exists on the dhcp server
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def valid?
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logger.info "Fetching DHCP reservation for #{to_s}"
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self == proxy.record(network, mac)
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end
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def == other
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return false unless other.present?
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if attrs[:hostname].blank?
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# If we're converting an 'ad-hoc' lease created by a host booting outside of Foreman's knowledge,
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# then :hostname will be blank on the incoming lease - if the ip/mac still match, then this
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# isn't a conflict
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attrs.values_at(:mac, :ip, :network) == other.attrs.values_at(:mac, :ip, :network)
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else
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# Otherwise, if a hostname is present, we want to check all 4 match before declaring a conflict
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attrs.values_at(:hostname, :mac, :ip, :network) == other.attrs.values_at(:hostname, :mac, :ip, :network)
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end
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end
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def attrs
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{ :hostname => hostname, :mac => mac, :ip => ip, :network => network,
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:nextServer => nextServer, :filename => filename
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}.delete_if { |k, v| v.nil? }
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end
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end
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end
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