Last change
on this file since 30903 was 30903, checked in by davidb, 8 years ago |
Vagrant provisioning files for a 4-node Hadoop cluster. See README.txt for more details
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File size:
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1 | #
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2 | # is_function_available.rb
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3 | #
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4 |
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5 | module Puppet::Parser::Functions
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6 | newfunction(:is_function_available, :type => :rvalue, :doc => <<-EOS
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7 | This function accepts a string as an argument, determines whether the
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8 | Puppet runtime has access to a function by that name. It returns a
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9 | true if the function exists, false if not.
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10 | EOS
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11 | ) do |arguments|
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12 |
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13 | if (arguments.size != 1) then
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14 | raise(Puppet::ParseError, "is_function_available?(): Wrong number of arguments "+
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15 | "given #{arguments.size} for 1")
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16 | end
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17 |
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18 | # Only allow String types
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19 | return false unless arguments[0].is_a?(String)
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20 |
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21 | function = Puppet::Parser::Functions.function(arguments[0].to_sym)
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22 | function.is_a?(String) and not function.empty?
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23 | end
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24 | end
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25 |
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26 | # vim: set ts=2 sw=2 et :
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