Method: RbVmomi::VIM::PerformanceManager#retrieve_stats

Defined in:
lib/rbvmomi/vim/PerformanceManager.rb

#retrieve_stats(objects, metrics, opts = {}) ⇒ Object



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# File 'lib/rbvmomi/vim/PerformanceManager.rb', line 34

def retrieve_stats objects, metrics, opts = {}
  opts = opts.dup
  max_samples = opts[:max_samples] || 1
  realtime = false
  if not opts[:interval]
    provider = provider_summary objects.first
    opts[:interval] = provider.refreshRate
    realtime = true
  else
    provider = provider_summary objects.first
    if opts[:interval] == provider.refreshRate
      realtime = true
    end
  end
    
  instances = opts[:instance] || '*'
  if !instances.is_a?(Array)
    instances = [instances]
  end
  metric_ids = []
  metrics.each do |x| 
    counter = perfcounter_hash[x]
    if !counter
      pp perfcounter_hash.keys
      fail "Counter for #{x} couldn't be found"
    end
    instances.each do |instance|
      metric_ids << RbVmomi::VIM::PerfMetricId(:counterId => counter.key, 
                                               :instance => instance)
    end
  end
  query_specs = objects.map do |obj|
    RbVmomi::VIM::PerfQuerySpec({
      :maxSample => max_samples, 
      :entity => obj, 
      :metricId => metric_ids, 
      :intervalId => opts[:interval],
      :startTime => (realtime == false ? opts[:start_time].to_datetime : nil),
    })
  end
  stats = QueryPerf(:querySpec => query_specs)
  
  if !opts[:multi_instance]
    Hash[stats.map do |res|
      [
        res.entity, 
        {
          :sampleInfo => res.sampleInfo,
          :metrics => Hash[res.value.map do |metric|
            metric_name = perfcounter_idhash[metric.id.counterId].name
            [metric_name, metric.value]
          end]
        }
      ]
    end]
  else
    Hash[stats.map do |res|
      [
        res.entity, 
        {
          :sampleInfo => res.sampleInfo,
          :metrics => Hash[res.value.map do |metric|
            metric_name = perfcounter_idhash[metric.id.counterId].name
            [[metric_name, metric.id.instance], metric.value]
          end]
        }
      ]
    end]
  end
end