Class: DynoCheck

Inherits:
Object
  • Object
show all
Defined in:
lib/dyno_check.rb

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ DynoCheck

Returns a new instance of DynoCheck.



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# File 'lib/dyno_check.rb', line 7

def initialize(options={})
  config_path     = options.delete(:config_path) || '/opt/dyno'
  dyno_config     = YAML::load(ERB.new(IO.read(File.join(config_path, 'config.yml'))).result)['dyno']
  database_config = YAML::load(ERB.new(IO.read(File.join(config_path, 'database.yml'))).result)['mongo']
  
  MongoMapper.connection = Mongo::Connection.new(database_config['host'], database_config['port'])
  MongoMapper.database   = database_config['database']
  
  @servers                       = dyno_config['servers']
  @passenger_memory_stats_output = `sudo passenger-memory-stats`
  @passenger_status_output       = `sudo passenger-status`
end

Instance Method Details

#overview_check ⇒ Object 



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# File 'lib/dyno_check.rb', line 38

def overview_check
  # prints 6 lines
  # Line 1 Total Apache worker processes
  # Line 2 Total memory used by Apache worker processes
  # Line 3 Total Nginx worker processes
  # Line 4 Total memory used by Nginx worker processes
  # Line 5 Total Passenger rails processes
  # Line 6 Total memory used by Passenger rails processes
  overview_stats = `echo "#{@passenger_memory_stats_output}" | grep '###' | awk '{print $3"\t"$6}'`.split("\n")
  
  apache_workers_count = overview_stats[0].split("\t")[0]
  apache_memory_used   = overview_stats[1].split("\t")[1]
  
  # here we really only want the passenger processes for our server (minus application and spawn server)
  passenger_process_count = `echo "#{@passenger_memory_stats_output}" | grep 'Rails:' | grep 'govpulse'`.split("\n").length

  passenger_memory_used   = overview_stats[5].split("\t")[1]
  
  # here we really only want the total mem for the threads for our server
  memory_threads = `echo "#{@passenger_memory_stats_output}" | grep 'MB.*Rails' | awk '{ print $1"\t"$4"\t"$7 }' | sort`.split("\n")
  passenger_memory_used_for_server = []
  memory_threads.length.times do |i|
    memory_thread = memory_threads[i].split("\t")
    passenger_memory_used_for_server = passenger_memory_used_for_server + memory_thread[1]
  end
  
  
  @dyno_server_check.passenger_overview = PassengerOverview.new(:total_apache_processes            => apache_workers_count,
                                                                :total_apache_memory               => apache_memory_used,
                                                                :total_passenger_processes         => passenger_process_count,
                                                                :total_passenger_memory            => passenger_memory_used,
                                                                :total_passenger_memory_for_server => passenger_memory_used_for_server)
end

#run ⇒ Object 



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# File 'lib/dyno_check.rb', line 20

def run
  @servers.each do |server_name|
    dyno_server = DynoServer.find_by_name(server_name)
    if dyno_server.nil?
      dyno_server = DynoServer.new(:name => server_name)
    end
    
    @current_time = Time.now
    @dyno_server_check = DynoServerCheck.create(:checked_at => @current_time)
    
    overview_check
    thread_check
    
    dyno_server.dyno_server_checks << @dyno_server_check
    dyno_server.save
  end
end

#thread_check ⇒ Object 



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# File 'lib/dyno_check.rb', line 72

def thread_check
  # prints PID PrivateMem ProcessName
  memory_threads = `echo "#{@passenger_memory_stats_output}" | grep 'MB.*Rails' | awk '{ print $1"\t"$4"\t"$7 }' | sort`.split("\n")
  
  # prints PID Sessions Processed Uptime(min) Uptime(sec) seperated by tabs
  status_threads = `echo "#{@passenger_status_output}" | grep 'PID: ' | awk '{ print $2"\t"$4"\t"$6"\t"$8"\t"$9 }' | sort`.split("\n")
  
  memory_threads.length.times do |i|
    memory_thread = memory_threads[i].split("\t")
    pid           = memory_thread[0]
    private_mem   = memory_thread[1]
    process_name  = memory_thread[2]
    
    status_thread      = status_threads[i].split("\t")
    sessions_waiting   = status_thread[1]
    sessions_processed = status_thread[2]
    uptime             = (status_thread[3].slice(0...-1) * 60) + status_thread[4].slice(0...-1)
    
    @dyno_server_check.passenger_threads << PassengerThread.new(:pid                => pid,
                                                                :private_mem        => private_mem,
                                                                :process_name       => process_name,
                                                                :sessions_waiting   => sessions_waiting,
                                                                :sessions_processed => sessions_processed,
                                                                :uptime             => uptime)
  end
  
end