Module: Validator::HandshakeHelper

Defined in:
spec/support/handshake_helper.rb

Overview

Helpers for validating the sequence of messages during rsmp connection establishment

Instance Method Summary collapse

Instance Method Details

#check_sequence(version) ⇒ Object 



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# File 'spec/support/handshake_helper.rb', line 87

def check_sequence version
  case version
  when '3.1.1', '3.1.2', '3.1.3'
    check_sequence_3_1_1_to_3_1_3 version
  when '3.1.4', '3.1.5', '3.2', '3.2.1', '3.2.2'
    check_sequence_3_1_4_or_later version
  else
    raise "Unkown rsmp version #{version}"
  end
end

#check_sequence_3_1_1_to_3_1_3(core_version) ⇒ Object

Validate the connection sequence for core 3.1.1, 3.1.2 and 3.1.3 In these earliser version of core, both the site and and the supervisor sends a Version message simulatenously as soon as the connection is opened, and then acknowledged. We therefore cannot expect a specific sequence of the first four messages, but we can check that the set of messages is correct The same is the case with the next four messages, which is the exchange of Watchdogs



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# File 'spec/support/handshake_helper.rb', line 36

def check_sequence_3_1_1_to_3_1_3 core_version
  expected_version_messages = [
    'in:Version',
    'out:MessageAck',
    'out:Version',
    'in:MessageAck',
  ]
  expected_watchdog_messages = [
    'in:Watchdog',
    'out:MessageAck',
    'out:Watchdog',
    'in:MessageAck',
  ]

  length = expected_version_messages.length +
           expected_watchdog_messages.length

  got = get_connection_message core_version, length

  got_version_messages = got[0..3]
  expect( got_version_messages.include?('in:AggregatedStatus') ).to be_falsy, "AggregatedStatus not allowed during version exchange: #{got_version_messages}"
  expect( got_version_messages.include?('in:Watchdog') ).to be_falsy, "Watchdog not allowed during version exchange: #{got_version_messages}"
  expect( got_version_messages.include?('in:Alarm') ).to be_falsy, "Alarms not allowed during version exchange: #{got_version_messages}"
  expect(got_version_messages).to match_array(expected_version_messages),
    "Wrong version part, must contain #{expected_version_messages}, got #{got_version_messages}"

  got_watchdog_messages = got[4..7]
  expect( got_watchdog_messages.include?('in:AggregatedStatus') ).to be_falsy, "AggregatedStatus not allowed during watchdog exchange: #{got_watchdog_messages}"
  expect( got_watchdog_messages.include?('in:Alarm') ).to be_falsy, "Alarms not allowed during watchdog exchange: #{got_version_messages}"
  expect(got_watchdog_messages).to match_array(expected_watchdog_messages),
    "Wrong watchdog part, must contain #{expected_watchdog_messages}, got #{got_watchdog_messages}"
end

#check_sequence_3_1_4_or_later(version) ⇒ Object

Validate the connection sequence for core 3.1.4 and later From 3.1.4, the site must send a Version first, so the sequence is fixed and can be directly verified



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# File 'spec/support/handshake_helper.rb', line 72

def check_sequence_3_1_4_or_later version
  expected = [
    'in:Version',
    'out:MessageAck',
    'out:Version',
    'in:MessageAck',
    'in:Watchdog',
    'out:MessageAck',
    'out:Watchdog',
    'in:MessageAck',
 ]
  got = get_connection_message version, expected.length
  expect(got).to eq(expected)
end

#get_connection_message(core_version, length) ⇒ Object

Wait for the site to connect and collect a specified number of messages, which can then be analysed.



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# File 'spec/support/handshake_helper.rb', line 8

def get_connection_message core_version, length
  timeout = Validator.get_config('timeouts','ready')
  got = nil

  Validator::Site.isolated(
    'collect' => {timeout: timeout, num: length, ingoing: true, outgoing: true},
    'guest' => {
      'rsmp_versions' => [core_version],
    }
  ) do |task,supervisor,site|
    expect(site.ready?).to be true
    collector = site.collector
    collector.use_task task
    collector.wait!
    got = collector.messages.map { |message| "#{message.direction}:#{message.type}" }
  end
  got
rescue Async::TimeoutError => e
  raise "Did not collect #{length} messages within #{timeout}s"
end