Class: Riemann::Tools::Bench

Inherits:
Object
  • Object
show all
Defined in:
lib/riemann/tools/bench.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Bench

Returns a new instance of Bench.



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# File 'lib/riemann/tools/bench.rb', line 13

def initialize
  super

  @hosts = [nil] + (0...10).map { |i| "host#{i}" }
  @hosts = %w[a b c d e f g h i j]
  @services = %w[test1 test2 test3 foo bar baz xyzzy attack cat treat]
  @states = {}
  @client = Riemann::Client.new(host: ARGV.first || 'localhost')
end

Instance Attribute Details

#client ⇒ Object

Returns the value of attribute client.



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# File 'lib/riemann/tools/bench.rb', line 11

def client
  @client
end

#hosts ⇒ Object

Returns the value of attribute hosts.



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# File 'lib/riemann/tools/bench.rb', line 11

def hosts
  @hosts
end

#services ⇒ Object

Returns the value of attribute services.



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# File 'lib/riemann/tools/bench.rb', line 11

def services
  @services
end

#states ⇒ Object

Returns the value of attribute states.



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# File 'lib/riemann/tools/bench.rb', line 11

def states
  @states
end

Instance Method Details

#evolve(state) ⇒ Object 



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# File 'lib/riemann/tools/bench.rb', line 23

def evolve(state)
  m = state[:metric] + ((rand - 0.5) * 0.1)
  m = m.clamp(0, 1)

  s = case m
      when 0...0.75
        'ok'
      when 0.75...0.9
        'warning'
      when 0.9..1.0
        'critical'
      end

  {
    metric: m,
    state: s,
    host: state[:host],
    service: state[:service],
    description: "at #{Time.now}",
  }
end

#run ⇒ Object 



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# File 'lib/riemann/tools/bench.rb', line 52

def run
  start
  loop do
    sleep 0.05
    tick
  end
end

#start ⇒ Object 



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# File 'lib/riemann/tools/bench.rb', line 60

def start
  hosts.product(services).each do |host, service|
    states[[host, service]] = {
      metric: 0.5,
      state: 'ok',
      description: 'Starting up',
      host: host,
      service: service,
    }
  end
end

#tick ⇒ Object 



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# File 'lib/riemann/tools/bench.rb', line 45

def tick
  #    pp @states
  hosts.product(services).each do |id|
    client << (states[id] = evolve(states[id]))
  end
end