Class: OkComputer::CacheCheck

Inherits:
Check
  • Object
show all
Defined in:
lib/ok_computer/built_in_checks/cache_check.rb

Constant Summary collapse

ConnectionFailed = 
Class.new(StandardError)

Constants inherited from Check

OkComputer::Check::CheckNotDefined

Instance Attribute Summary

Attributes inherited from Check

#failure_occurred, #message, #registrant_name

Instance Method Summary collapse

Methods inherited from Check

#clear, #mark_failure, #mark_message, #run, #success?, #to_json, #to_text

Instance Method Details

#check ⇒ Object

Public: Check whether the cache is active



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# File 'lib/ok_computer/built_in_checks/cache_check.rb', line 7

def check
  mark_message "Cache is available (#{stats})"
rescue ConnectionFailed => e
  mark_failure
  mark_message "Error: '#{e}'"
end

#stats ⇒ Object

Public: Outputs stats string for cache



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# File 'lib/ok_computer/built_in_checks/cache_check.rb', line 15

def stats
  stats    = Rails.cache.stats
  host     = stats.select{|k,v| k =~ Regexp.new(Socket.gethostname) }.values[0]
  mem_used = to_megabytes host['bytes']
  mem_max  = to_megabytes host['limit_maxbytes']
  return "#{mem_used} / #{mem_max} MB, #{stats.count - 1} peers"
rescue => e
  raise ConnectionFailed, e
end