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class ReportStatusCalculator
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# converts a counters hash into a bit field
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# expects a metrics_to_hash kind of counters
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# see the report_processor for the implementation
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def initialize(options = {})
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@counters = options[:counters] || {}
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@raw_status = options[:bit_field] || 0
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end
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def calculate
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@raw_status = 0
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counters.each do |type, value|
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value = value.to_i # JSON does everything as strings
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value = Report::MAX if value > Report::MAX # we store up to 2^BIT_NUM -1 values as we want to use only BIT_NUM bits.
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@raw_status |= value << (Report::BIT_NUM * Report::METRIC.index(type))
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end
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raw_status
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end
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#returns metrics
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#when no metric type is specific returns hash with all values
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#passing a METRIC member will return its value
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def status(type = nil)
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calculate if raw_status == 0
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raise(Foreman::Exception(N_("invalid type %s") % type)) if type && !Report::METRIC.include?(type)
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counters = Hash.new(0)
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(type.is_a?(String) ? [type] : Report::METRIC).each do |m|
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counters[m] = (raw_status || 0) >> (Report::BIT_NUM * Report::METRIC.index(m)) & Report::MAX
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end
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type.nil? ? counters : counters[type]
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end
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private
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attr_reader :raw_status, :counters
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end
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