Class: TingYun::Agent::Collector::MemorySampler

Inherits:
Sampler
  • Object
show all
Defined in:
lib/ting_yun/agent/collector/middle_ware_collector/memory_sampler.rb

Defined Under Namespace

Classes: Base, ProcStatus, ShellPS

Instance Attribute Summary collapse

Attributes inherited from Sampler

#id

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Sampler

enabled?, inherited, name, named, sampler_classes

Constructor Details

#initialize ⇒ MemorySampler

Returns a new instance of MemorySampler.

Raises:



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# File 'lib/ting_yun/agent/collector/middle_ware_collector/memory_sampler.rb', line 15

def initialize
  # macos, linux, solaris
  if platform =~ /linux/
    @sampler = ProcStatus.new
    if !@sampler.can_run?
      ::TingYun::Agent.logger.debug "Error attempting to use /proc/#{$$}/status file for reading memory. Using ps command instead."
      @sampler = ShellPS.new("ps -o rsz")
    else
      ::TingYun::Agent.logger.debug "Using /proc/#{$$}/status for reading process memory."
    end
  elsif platform =~ /darwin9/ # 10.5
    @sampler = ShellPS.new("ps -o rsz")
  elsif platform =~ /darwin1\d+/ # >= 10.6
    @sampler = ShellPS.new("ps -o rss")
  elsif platform =~ /freebsd/
    @sampler = ShellPS.new("ps -o rss")
  elsif platform =~ /solaris/
    @sampler = ShellPS.new("/usr/bin/ps -o rss -p")
  end

  raise Unsupported, "Unsupported platform for getting memory: #{platform}" if @sampler.nil?
  raise Unsupported, "Unable to run #{@sampler}" unless @sampler.can_run?
end

Instance Attribute Details

#sampler ⇒ Object

Returns the value of attribute sampler.



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# File 'lib/ting_yun/agent/collector/middle_ware_collector/memory_sampler.rb', line 13

def sampler
  @sampler
end

Class Method Details

.platform ⇒ Object 



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# File 'lib/ting_yun/agent/collector/middle_ware_collector/memory_sampler.rb', line 47

def self.platform
  TingYun::Support::SystemInfo.ruby_os_identifier.downcase
end

.supported_on_this_platform? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ting_yun/agent/collector/middle_ware_collector/memory_sampler.rb', line 39

def self.supported_on_this_platform?
  platform =~ /linux|darwin|freebsd|solaris/
end

Instance Method Details

#platform ⇒ Object 



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# File 'lib/ting_yun/agent/collector/middle_ware_collector/memory_sampler.rb', line 43

def platform
  TingYun::Support::SystemInfo.ruby_os_identifier.downcase
end

#poll ⇒ Object 



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# File 'lib/ting_yun/agent/collector/middle_ware_collector/memory_sampler.rb', line 51

def poll
  sample = @sampler.get_sample
  if sample
    TingYun::Agent.record_metric("Memory/NULL/PhysicalUsed", sample)
  end
end