Last change
on this file since 30903 was 30903, checked in by davidb, 7 years ago |
Vagrant provisioning files for a 4-node Hadoop cluster. See README.txt for more details
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File size:
705 bytes
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1 | #
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2 | # empty.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(:empty, :type => :rvalue, :doc => <<-EOS
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7 | Returns true if the variable is empty.
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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, "empty(): 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 | value = arguments[0]
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15 |
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16 | unless value.is_a?(Array) || value.is_a?(Hash) || value.is_a?(String) || value.is_a?(Numeric)
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17 | raise(Puppet::ParseError, 'empty(): Requires either ' +
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18 | 'array, hash, string or integer to work with')
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19 | end
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20 |
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21 | if value.is_a?(Numeric)
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22 | return false
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23 | else
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24 | result = value.empty?
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25 |
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26 | return result
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27 | end
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28 | end
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29 | end
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30 |
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31 | # vim: set ts=2 sw=2 et :
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