Class: Fluent::Plugin::KubernetesMetricsAggregatorInput::UsageMetricsUnit

Inherits:
Object
  • Object
show all
Defined in:
lib/fluent/plugin/in_kubernetes_metrics_aggregator.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ UsageMetricsUnit

Returns a new instance of UsageMetricsUnit.



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# File 'lib/fluent/plugin/in_kubernetes_metrics_aggregator.rb', line 29

def initialize
  @cpu_limit = 0
  @cpu_request = 0
  @memory_limit = 0
  @memory_request = 0
end

Instance Method Details

#add_usage_metrics(cpu_limit, cpu_request, memory_limit, memory_request) ⇒ Object 



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# File 'lib/fluent/plugin/in_kubernetes_metrics_aggregator.rb', line 36

def add_usage_metrics(cpu_limit, cpu_request, memory_limit, memory_request)
  cpu = get_cpu_or_memory_value(cpu_limit)
  mult = get_cpu_mult(cpu_limit)
  @cpu_limit += cpu * mult
  cpu = get_cpu_or_memory_value(cpu_request)
  mult = get_cpu_mult(cpu_request)
  @cpu_request += cpu * mult
  memory = get_cpu_or_memory_value(memory_limit)
  mult = get_memory_mult(memory_limit)
  @memory_limit += memory * mult
  memory = get_cpu_or_memory_value(memory_request)
  mult = get_memory_mult(memory_request)
  @memory_request += memory * mult
end

#get_cpu_mult(cpu) ⇒ Object 



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# File 'lib/fluent/plugin/in_kubernetes_metrics_aggregator.rb', line 63

def get_cpu_mult(cpu)
  cpu_mult = 1
  cpu_mult = 1000 if cpu[-1] != 'm'
  cpu_mult
end

#get_cpu_or_memory_value(resource) ⇒ Object 



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# File 'lib/fluent/plugin/in_kubernetes_metrics_aggregator.rb', line 58

def get_cpu_or_memory_value(resource)
  resource = resource.tr('^0-9.', '').to_i
  resource
end

#get_cpu_value_and_multiplier(cpu) ⇒ Object 



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# File 'lib/fluent/plugin/in_kubernetes_metrics_aggregator.rb', line 51

def get_cpu_value_and_multiplier(cpu)
  # m cpu is assumed standard
  @cpu_mult = 1
  @cpu_mult = 1000 if cpu[-1] != 'm'
  cpu.delete('^0-9.').to_i
end

#get_memory_mult(memory) ⇒ Object

kubernetes.io/docs/concepts/configuration/manage-compute-resources-container/#meaning-of-memory 1 Ki = 1024 bytes 1 K = 1000 bytes = 1000/1024 Ki = 1000/1024*1024 Mi



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# File 'lib/fluent/plugin/in_kubernetes_metrics_aggregator.rb', line 72

def get_memory_mult(memory)
  memory_mult = if memory[-2..] == 'Ki'
                  1.0 / 1024
                elsif memory[-1] == 'K'
                  1e3 / 1024 ** 2
                elsif memory[-2..] == 'Mi'
                  1
                elsif memory[-1] == 'M'
                  1e6 / 1024 ** 2
                elsif memory[-2..] == 'Gi'
                  1024
                elsif memory[-1] == 'G'
                  1e9 / 1024 ** 2
                elsif memory[-2..] == 'Ti'
                  1024 ** 2
                elsif memory[-1] == 'T'
                  1e12 / 1024 ** 2
                elsif memory[-2..] == 'Pi'
                  1024**3
                elsif memory[-2] == 'P'
                  1e15 / 1024 ** 2
                elsif memory[-2..] == 'Ei'
                  1024**4
                elsif memory[-2] == 'E'
                  1e18 / 1024 ** 2
                else
                  1.0 / 1024 ** 2
                end
  memory_mult
end