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Puppet::Network::Handler::Node.newnode_source(:external, :fact_merge => true) do
desc "Call an external program to get node information."
include Puppet::Util
# Look for external node definitions.
def nodesearch(name)
return nil unless Puppet[:external_nodes] != "none"
# This is a very cheap way to do this, since it will break on
# commands that have spaces in the arguments. But it's good
# enough for most cases.
external_node_command = Puppet[:external_nodes].split
external_node_command << name
begin
output = Puppet::Util.execute(external_node_command)
rescue Puppet::ExecutionFailure => detail
if $?.exitstatus == 1
return nil
else
Puppet.err "Could not retrieve external node information for %s: %s" % [name, detail]
end
return nil
end
if output =~ /\A\s*\Z/ # all whitespace
Puppet.debug "Empty response for %s from external node source" % name
return nil
end
begin
result = YAML.load(output).inject({}) { |hash, data| hash[symbolize(data[0])] = data[1]; hash }
rescue => detail
raise Puppet::Error, "Could not load external node results for %s: %s" % [name, detail]
end
node = newnode(name)
set = false
[:parameters, :classes].each do |param|
if value = result[param]
node.send(param.to_s + "=", value)
set = true
end
end
if set
return node
else
return nil
end
end
end
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