Class: FrenzyBunnies::Health::Providers::Jvm

Inherits:
Object
  • Object
show all
Defined in:
lib/frenzy_bunnies/health/providers/jvm.rb

Instance Method Summary collapse

Constructor Details

#initialize(opts) ⇒ Jvm

Returns a new instance of Jvm.



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# File 'lib/frenzy_bunnies/health/providers/jvm.rb', line 6

def initialize(opts)
  # init beans
  @opts = opts
  @memorymx = ManagementFactory.memory_mx_bean
  @threadmx = ManagementFactory.thread_mx_bean
  @threadmx_thread_info = @threadmx.java_method :getThreadInfo, [Java::long, Java::int]
  @runtimemx = ManagementFactory.runtime_mx_bean
end

Instance Method Details

#report ⇒ Object 



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# File 'lib/frenzy_bunnies/health/providers/jvm.rb', line 15

def report
  h = {}
  heap = @memorymx.heap_memory_usage
  h[:heap_usage_used_bytes] = heap.used
  h[:heap_usage_max_bytes] = heap.max
  h[:heap_usage_committed_bytes] = heap.committed
  h[:heap_usage_human] = heap.to_s

  h[:jvm_uptime_ms] = @runtimemx.uptime

  ids = @threadmx.all_thread_ids
  h[:threads] = ids.map do |id|
    info = @threadmx_thread_info.call(id, 10)
    if info && info.thread_name =~ @opts[:threadfilter]
      {
        :name => info.thread_name,
        :stack_trace => info.stack_trace.to_a.inject([]){|a,s| a<<s.to_s },
        :state => info.thread_state.to_s
      }
    else
      nil
    end
  end.compact

  ids.map{|i| @threadmx_thread_info.call(i, 10) }.compact.map {|inf| inf.stack_trace.to_a.inject([]){|a,s| a<<s.to_s }}
  
  h
end