Class: Munin::RequestLogAnalyzerPlugin

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args, environment) ⇒ RequestLogAnalyzerPlugin

Returns a new instance of RequestLogAnalyzerPlugin.



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# File 'lib/munin/request_log_analyzer_plugin.rb', line 9

def initialize(args, environment)
  handle_arguments(args, environment)      
  ensure_configuration
  
  if args[0] == "config"
    config
  elsif args[0] == "autoconf"
    autoconf
  end
end

Instance Attribute Details

#debug ⇒ Object

Returns the value of attribute debug.



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# File 'lib/munin/request_log_analyzer_plugin.rb', line 6

def debug
  @debug
end

#environment ⇒ Object

Returns the value of attribute environment.



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# File 'lib/munin/request_log_analyzer_plugin.rb', line 7

def environment
  @environment
end

#graph_category ⇒ Object

Returns the value of attribute graph_category.



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# File 'lib/munin/request_log_analyzer_plugin.rb', line 3

def graph_category
  @graph_category
end

#passenger_memory_stats ⇒ Object

Returns the value of attribute passenger_memory_stats.



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# File 'lib/munin/request_log_analyzer_plugin.rb', line 4

def passenger_memory_stats
  @passenger_memory_stats
end

#passenger_status ⇒ Object

Returns the value of attribute passenger_status.



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# File 'lib/munin/request_log_analyzer_plugin.rb', line 5

def passenger_status
  @passenger_status
end

Instance Method Details

#autoconf ⇒ Object 



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# File 'lib/munin/request_log_analyzer_plugin.rb', line 109

def autoconf
  ensure_configuration
  puts "yes"
  exit 0      
end

#ensure_configuration ⇒ Object 



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# File 'lib/munin/request_log_analyzer_plugin.rb', line 105

def ensure_configuration
  
end

#handle_arguments(args, environment) ⇒ Object 



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# File 'lib/munin/request_log_analyzer_plugin.rb', line 20

def handle_arguments(args, environment)
  self.environment = environment
  self.graph_category = environment['graph_category'] || 'App'            

  if args[0] == "debug"
    args.shift
    self.debug = true
  end        
end

#require_command(command_name) ⇒ Object 



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# File 'lib/munin/request_log_analyzer_plugin.rb', line 60

def require_command(command_name)
  status = `#{command_name}`
  unless $?.success?
    puts "no (error when excuting #{command_name})"
    exit 1
  end        
end

#require_gem(gemname, version = nil) ⇒ Object 



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# File 'lib/munin/request_log_analyzer_plugin.rb', line 91

def require_gem(gemname, version = nil)
  begin
    require 'rubygems'
    if version
      gem gemname, version
    else
      gem gemname
    end
  rescue Exception => e
    puts "no (Gem not found: #{e})"
    exit 1
  end      
end

#require_passenger_gem ⇒ Object 



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# File 'lib/munin/request_log_analyzer_plugin.rb', line 30

def require_passenger_gem
  require_gem("passenger", ">=2.0")
end

#require_passenger_memory_stats ⇒ Object 



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# File 'lib/munin/request_log_analyzer_plugin.rb', line 85

def require_passenger_memory_stats
  self.passenger_memory_stats  = environment['passenger_memory_stats'] || '/usr/local/bin/passenger-memory-stats'            
  
  require_command(passenger_memory_stats)
end

#require_passenger_status ⇒ Object 



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# File 'lib/munin/request_log_analyzer_plugin.rb', line 75

def require_passenger_status
  self.passenger_status = environment['passenger_status'] || '/usr/local/bin/passenger-status'
  #to use if you have multiple passenger on the host like phusion passenger standalone
  if environment['apache_pid_file']
    self.passenger_status = "cat #{environment['apache_pid_file']} | xargs -0 #{passenger_status}"        
  end
  
  require_command(passenger_status)
end

#require_request_log_analyzer_gem ⇒ Object 



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# File 'lib/munin/request_log_analyzer_plugin.rb', line 47

def require_request_log_analyzer_gem
  require_gem("request-log-analyzer", ">=1.1.6")
end

#require_tail_command ⇒ Object 



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# File 'lib/munin/request_log_analyzer_plugin.rb', line 68

def require_tail_command
  unless `echo "test" | tail 2>/dev/null`.include?("test")
    puts "no (tail command not found)"
    exit 1
  end      
end

#require_yaml_gem ⇒ Object 



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# File 'lib/munin/request_log_analyzer_plugin.rb', line 51

def require_yaml_gem
  begin
    require 'yaml'
  rescue Exception => e
    puts "no (yaml not found)"
    exit 1
  end           
end

#run_command(command, debug = false) ⇒ Object 



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# File 'lib/munin/request_log_analyzer_plugin.rb', line 34

def run_command(command, debug = false)
  result = `#{command}`

  unless $?.success?
    $stderr.puts "failed executing #{command}"
    exit 1
  end

  puts result if debug      
  
  result
end