f8194176dc
If one wishes to test if a host has a particular IP address (such as a floating virtual address) or has an interface on a particular network (such as a secondary management network), the facts that provide this information are difficult to use within Puppet. This patch addresses these needs by implementing functions ‘has_ip_address(value)’ and ‘has_ip_network(value)’. These functions look through all interfaces for ipaddress_<interface> and network_<interface> (respectively) having the requested <value>. These functions are implemented on top of a lower-level predicate function, ‘has_interface_with(kind, value)’, which iterates through the interfaces in the ‘interfaces’ fact and checks the facts <kind>_<interface> looking for <value>. Additionally, the existence of a particular named interface can be checked for by calling with only a single argument: has_interface_with(interface). A Boolean is returned in all cases.
52 lines
1.2 KiB
Ruby
52 lines
1.2 KiB
Ruby
#
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# has_interface_with
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#
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module Puppet::Parser::Functions
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newfunction(:has_interface_with, :type => :rvalue, :doc => <<-EOS
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Returns boolean based on kind and value:
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* macaddress
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* netmask
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* ipaddress
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* network
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has_interface_with("macaddress", "x:x:x:x:x:x")
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has_interface_with("ipaddress", "127.0.0.1") => true
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etc.
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If no "kind" is given, then the presence of the interface is checked:
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has_interface_with("lo") => true
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EOS
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) do |args|
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raise(Puppet::ParseError, "has_interface_with(): Wrong number of arguments " +
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"given (#{args.size} for 1 or 2)") if args.size < 1 or args.size > 2
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interfaces = lookupvar('interfaces')
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# If we do not have any interfaces, then there are no requested attributes
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return false if (interfaces == :undefined)
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interfaces = interfaces.split(',')
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if args.size == 1
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return interfaces.member?(args[0])
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end
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kind, value = args
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if lookupvar(kind) == value
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return true
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end
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result = false
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interfaces.each do |iface|
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if value == lookupvar("#{kind}_#{iface}")
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result = true
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break
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end
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end
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result
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end
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end
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