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:
955 bytes
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1 | module Puppet::Parser::Functions
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2 | newfunction(:loadjson, :type => :rvalue, :arity => -2, :doc => <<-'ENDHEREDOC') do |args|
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3 | Load a JSON file containing an array, string, or hash, and return the data
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4 | in the corresponding native data type.
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5 | The second parameter is the default value. It will be returned if the file
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6 | was not found or could not be parsed.
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7 |
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8 | For example:
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9 |
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10 | $myhash = loadjson('/etc/puppet/data/myhash.json')
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11 | $myhash = loadjson('no-file.json', {'default' => 'value'})
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12 | ENDHEREDOC
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13 |
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14 | raise ArgumentError, 'Wrong number of arguments. 1 or 2 arguments should be provided.' unless args.length >= 1
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15 |
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16 | if File.exists?(args[0])
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17 | begin
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18 | content = File.read(args[0])
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19 | PSON::load(content) || args[1]
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20 | rescue Exception => e
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21 | if args[1]
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22 | args[1]
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23 | else
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24 | raise e
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25 | end
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26 | end
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27 | else
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28 | warning("Can't load '#{args[0]}' File does not exist!")
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29 | args[1]
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30 | end
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31 |
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32 | end
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33 |
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34 | end
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