b1beaec2da
It is difficult to use existance of keys in a hash as a boolean condition in Puppet (see #8705) This function provides a working solution until the underlying issue in Puppet can be resolved. Reviewed-by: Jeff McCune
27 lines
772 B
Ruby
27 lines
772 B
Ruby
module Puppet::Parser::Functions
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newfunction(:has_key, :type => :rvalue, :doc => <<-'ENDHEREDOC') do |args|
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determine if a hash has a certain key value.
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Example:
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$my_hash = {'key_one' => 'value_one'}
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if has_key($my_hash, 'key_two') {
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notice('we will not reach here')
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}
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if has_key($my_hash, 'key_one') {
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notice('this will be printed')
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}
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ENDHEREDOC
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unless args.length == 2
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raise Puppet::ParseError, ("has_key(): wrong number of arguments (#{args.length}; must be 2)")
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end
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unless args[0].is_a?(Hash)
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raise Puppet::ParseError, "has_key(): expects the first argument to be a hash, got #{args[0].inspect} which is of type #{args[0].class}"
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end
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args[0].has_key?(args[1])
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end
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end
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