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Last change
on this file since 30903 was 30903, checked in by davidb, 7 years ago |
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Vagrant provisioning files for a 4-node Hadoop cluster. See README.txt for more details
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File size:
514 bytes
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| 1 | #
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| 2 | # keys.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(:keys, :type => :rvalue, :doc => <<-EOS
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| 7 | Returns the keys of a hash as an array.
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| 8 | EOS
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| 9 | ) do |arguments|
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| 10 |
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| 11 | raise(Puppet::ParseError, "keys(): Wrong number of arguments " +
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| 12 | "given (#{arguments.size} for 1)") if arguments.size < 1
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| 13 |
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| 14 | hash = arguments[0]
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| 15 |
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| 16 | unless hash.is_a?(Hash)
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| 17 | raise(Puppet::ParseError, 'keys(): Requires hash to work with')
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| 18 | end
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| 19 |
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| 20 | result = hash.keys
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| 21 |
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| 22 | return result
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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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