wiki:GEC19Agenda/GIMI/Procedure/Execute

Version 6 (modified by divyashri.bhat@gmail.com, 6 years ago) (diff)

--

Image Map

How to use OML4R to write your OML application

1. Setup your Application

1.1 Download the tar file of your application

sudo su
wget http://www.gpolab.bbn.com/experiment-support/gec17/pingPlus/pingPlus_v3.tar.gz
tar xvzf pingPlus_v3.tar.gz
cd pingPlus_v3
make

1.2 Test connectivity

On the receiver

chmod +x pingPlusListener
ping -c 5 10.10.10.1
ifconfig eth1 0.0.0.0
ping -c 5 10.10.10.1
./pingPlusListener 10002

The format for the pingPlusListener is sudo ./pingPlusListener <EtherType>

On the sender

ping -c 5 10.10.10.2
ifconfig eth1 0.0.0.0
ping -c 5 10.10.10.2
chmod +x pingPlus
./pingPlus 02:26:ae:0e:9b:3e eth1 10002

The format for the sender is

./pingPlus <server mac> <client i/f name> <EtherType> <count>

1. Observe your Output

root@sender:/users/dbhat/pingPlus_v3# ./pingPlus 02:26:ae:0e:9b:3e eth1 10002 5
RQ:'9641+4173' to 2:26:ae:e:9b:3e.
RL:9641+4173=13814 from 2:26:ae:e:9b:3e.
RTT = 0.920166
RQ:'2271+7533' to 2:26:ae:e:9b:3e.
RL:2271+7533=9804 from 2:26:ae:e:9b:3e.
RTT = 0.654053
RQ:'8858+353' to 2:26:ae:e:9b:3e.
RL:8858+353=9211 from 2:26:ae:e:9b:3e.
RTT = 0.489014
RQ:'447+5696' to 2:26:ae:e:9b:3e.
RL:447+5696=6143 from 2:26:ae:e:9b:3e.
RTT = 0.290039
RQ:'7238+5082' to 2:26:ae:e:9b:3e.
RL:7238+5082=12320 from 2:26:ae:e:9b:3e.
RTT = 0.252930

2. Write your Parser

2.1 Write your OML Parser

def process_output(row)
  if not (parse= /RQ:'(?<pktsnt1>\d*)\+(?<pktsnt2>\d*)' to (?<host>[a-f0-9:]*)/.match(row)).nil?
  puts "ReturnQual #{parse[:pktsnt1]}\n" 
  MPrt.inject(parse[:pktsnt1], parse[:pktsnt2],parse[:host])

  elsif not (parse= /RL:(?<numofpkt1>\d*)\+(?<numofpkt2>\d*)=(?<totpktrec>\d*) from (?<dest_hw_addr>[a-f0-9:]*)/.match(row)).nil?
  puts "ReturnLength\n"
  p parse
  p MPrl.inject(parse[:numofpkt1],parse[:numofpkt2],parse[:totpktrec],parse[:dest_hw_addr]) 

  elsif not (parse = /RTT = (?<rtt>[0-9.]*)/.match(row)).nil?
  puts "RoundTripTime #{parse[:rtt]}\n"
  p parse
  p MPrtt.inject(parse[:rtt])
  end
end

2.2 Write your OML Application

#!/usr/bin/ruby1.9.1
require 'rubygems'
require 'oml4r'

class MPrt < OML4R::MPBase
   name :pingrt
   param :pktsnt1, :type => :uint64
   param :pktsnt2, :type => :uint64
   param :host, :type => :string
end

class MPrl < OML4R::MPBase
   name :pingrl
   param :totpktrec, :type => :uint64
   param :numofpkt1, :type => :uint64
   param :numofpkt2, :type => :uint64
   param :dest_hw_addr, :type => :string
end

class MPrtt < OML4R::MPBase
   name :pingrtt
   param :rtt, :type => :double
end

class Pingl2Wrapper

  def initialize(args)
     @addr = nil
     @if_num = ''
     @eth = nil
     @verbose = true
     @numeric = ''

     leftover = OML4R::init(args, :appName => 'pingl2') do |argParser|
       argParser.banner = "Runs layer 2 ping and reports measurements via OML\n\n"
       argParser.on("-a" , "--dest_hw_addr ADDRESS", "Hardware address to ping (the -a switch is optional)"){ |address| @addr = address.to_s() }
       argParser.on("-i","--interface IFNUM","Interface number"){ |if_num| @if_num ="#{if_num.to_i()}" }
       argParser.on("-e", "--eth ETHTYPE","Ethernet Type") { |ethtype| @eth = ethtype.to_s() }
       argParser.on("-c","--count NUMBER","Number of pings (default: infinite)"){ |count| @count = "#{count.to_i()}"}
       argParser.on("-q", "--no-quiet ","Don't show layer 2 ping output on console"){ @verbose = false }
       argParser.on("-n", "--[no]-numeric ", "No attempt twill be made to look up symbolic names for host addresses"){ @numeric ='-n' }
    end

    if @addr.nil?
      if leftover.length > 0
        @addr = leftover [0]
      else
        raise "You did not specify an address to ping!"
      end
    end

end

def process_output(row)
  if not (parse= /RQ:'(?<pktsnt1>\d*)\+(?<pktsnt2>\d*)' to (?<host>[a-f0-9:]*)/.match(row)).nil?
  puts "ReturnQual #{parse[:pktsnt1]}\n" 
  MPrt.inject(parse[:pktsnt1], parse[:pktsnt2],parse[:host])

  elsif not (parse= /RL:(?<numofpkt1>\d*)\+(?<numofpkt2>\d*)=(?<totpktrec>\d*) from (?<dest_hw_addr>[a-f0-9:]*)/.match(row)).nil?
  puts "ReturnLength\n"
  p parse
  p MPrl.inject(parse[:numofpkt1],parse[:numofpkt2],parse[:totpktrec],parse[:dest_hw_addr]) 

  elsif not (parse = /RTT = (?<rtt>[0-9.]*)/.match(row)).nil?
  puts "RoundTripTime #{parse[:rtt]}\n"
  p parse
  p MPrtt.inject(parse[:rtt])
  end
end

def pingl2()
   @pingio = IO.popen("/bin/pingPlus #{@addr} #{@eth} #{@if_num} #{@count}")
   while true
    row = @pingio.readline
    puts row if @verbose
    process_output(row)
    end
end

def start()
    return if not @pingio.nil?

    # handle for OMF's exit command
    a = Thread.new do
      $stdin.each do |line|
    if /^exit/ =~ line
      Process.kill("INT",0)    
    end
      end
    end

3. Instrument your Application using LabWiki

defProperty('source1', "sender-gimiinsta", "ID of a resource")

defProperty('sinkaddr11', '02:ee:1a:a2:51:11', "Ping destination address")
defProperty('eth11','eth1',"Output Eth interface")


defApplication('pingl2') do |app|
  app.description = 'Simple Definition for the pingl2 application'
  # Define the path to the binary executable for this application
  app.binary_path = '/usr/local/bin/pingl2.rb'
  # Define the configurable parameters for this application
  # For example if target is set to foo.com and count is set to 2, then the 
  # application will be started with the command line:
  # /usr/bin/ping-oml2 -a foo.com -c 2
  app.defProperty('target', 'Address to ping', '-a', {:type => :string})
  app.defProperty('count', 'Number of times to ping', '-c', {:type => :integer})
  app.defProperty('if_num', 'interface number', '-i', {:type => :integer})
  app.defProperty('eth', 'Ethernet Type', '-e', {:type => :string})
  # Define the OML2 measurement point that this application provides.
  # Here we have only one measurement point (MP) named 'ping'. Each measurement
  # sample from this MP will be composed of a 4-tuples (addr,ttl,rtt,rtt_unit)
  app.defMeasurement('pingrl') do |m|
    m.defMetric('dest_hw_addr',:string)
  end
    app.defMeasurement('pingrtt') do |m|
    m.defMetric('rtt',:double)
  end
end
defGroup('Source1', property.source1) do |node|
  node.addApplication("pingl2") do |app|
    app.setProperty('target', property.sinkaddr11)
    app.setProperty('count', 30)
    app.setProperty('if_num', 10002)
    app.setProperty('eth',property.eth11)
    app.measure('pingrl', :samples => 1)
    app.measure('pingrtt', :samples => 1)
  end
end



onEvent(:ALL_UP_AND_INSTALLED) do |event|
  info "Starting the ping"
  after 5 do
    allGroups.startApplications
  end
  after 70 do
    info "Stopping the ping"
    allGroups.stopApplications
    Experiment.done
  end
end

defGraph 'RTT' do |g|
  g.ms('pingrtt').select(:rtt__oml_seq, :rtt__rtt, :rl__dest_hw_addr)\
     .from(:pingl2_pingrtt___rtt, :pingl2_pingrl___rl)\
     .where(:rtt__oml_seq => :rl__oml_seq)
  g.caption "RTT of received packets."
  g.type 'line_chart3'
  g.mapping :x_axis => :oml_seq, :y_axis => :rtt, :group_by => :dest_hw_addr
  g.xaxis :legend => 'oml_seq'
  g.yaxis :legend => 'rtt', :ticks => {:format => 's'}
end

Attachments (4)

Download all attachments as: .zip