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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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# calculates the raw_status based on counters
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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 (counters) based on raw_status (aka bit field)
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# to get status of specific metric, @see #status_of
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def status
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@status ||= begin
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calculate if raw_status == 0
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counters = Hash.new(0)
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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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counters
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end
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end
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def status_of(counter)
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raise(Foreman::Exception.new(N_("invalid type %s"), counter)) unless Report::METRIC.include?(counter)
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status[counter]
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end
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# returns true if total error metrics are > 0
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def error?
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status_of('failed') + status_of('failed_restarts') > 0
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end
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# returns true if total action metrics are > 0
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def changes?
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status_of('applied') + status_of('restarted') > 0
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end
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# returns true if there are any changes pending
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def pending?
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status_of('pending') > 0
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end
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# generate dynamically methods for all metrics
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# e.g. applied failed ...
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Report::METRIC.each do |method|
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define_method method do
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status_of(method)
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end
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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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