Class: Atatus::Metrics::JVMSet Private

Inherits:
Set
  • Object
show all
Includes:
Logging
Defined in:
lib/atatus/metrics/jvm_set.rb

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Constant Summary collapse

MAX_TRIES =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

3

Constants included from Logging

Logging::LEVELS, Logging::PREFIX

Constants inherited from Set

Set::DISTINCT_LABEL_LIMIT

Instance Attribute Summary

Attributes inherited from Set

#metrics

Instance Method Summary collapse

Methods included from Logging

#debug, #error, #fatal, #info, #warn

Methods inherited from Set

#counter, #disable!, #disabled?, #gauge, #metric, #timer

Constructor Details

#initialize(*args) ⇒ JVMSet

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of JVMSet.



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# File 'lib/atatus/metrics/jvm_set.rb', line 30

def initialize(*args)
  super

  @error_count = 0
end

Instance Method Details

#collect ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/atatus/metrics/jvm_set.rb', line 36

def collect
  read!
  super
end

#read! ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/atatus/metrics/jvm_set.rb', line 41

def read!
  return if disabled?

  heap = platform_bean.get_heap_memory_usage
  non_heap = platform_bean.get_non_heap_memory_usage

  gauge(:"jvm.memory.heap.used").value = heap.get_used
  gauge(:"jvm.memory.heap.committed").value = heap.get_committed
  gauge(:"jvm.memory.heap.max").value = heap.get_max

  gauge(:"jvm.memory.non_heap.used").value = non_heap.get_used
  gauge(:"jvm.memory.non_heap.committed").value = non_heap.get_committed
  gauge(:"jvm.memory.non_heap.max").value = non_heap.get_max

  pool_beans.each do |bean|
    next unless bean.type.name == "HEAP"

    tags = { name: bean.get_name }

    gauge(:"jvm.memory.heap.pool.used", tags: tags).value = bean.get_usage.get_used
    gauge(:"jvm.memory.heap.pool.committed", tags: tags).value = bean.get_usage.get_committed
    gauge(:"jvm.memory.heap.pool.max", tags: tags).value = bean.get_usage.get_max
  end
rescue Exception => e
  error("JVM metrics encountered error: %s", e)
  debug("Backtrace:") { e.backtrace.join("\n") }

  @error_count += 1
  if @error_count >= MAX_TRIES
    disable!
    error("Disabling JVM metrics after #{MAX_TRIES} errors", e)
  end
end