Class: RSpecSystem::NodeSet::Vagrant

Inherits:
Base
  • Object
show all
Includes:
Log
Defined in:
lib/rspec-system/node_set/vagrant.rb

Overview

A NodeSet implementation for Vagrant.

Constant Summary collapse

ENV_TYPE = 
'vagrant'

Instance Attribute Summary

Attributes inherited from Base

#config, #nodes, #setname

Instance Method Summary collapse

Methods included from Log

#log

Methods inherited from Base

#default_node, #env_type, #randmac, #random_string, #ssh_exec!, #tmppath

Constructor Details

#initialize(setname, config) ⇒ Vagrant

Creates a new instance of RSpecSystem::NodeSet::Vagrant

Parameters:

  • setname (String) —

    name of the set to instantiate

  • config (Hash) —

    nodeset configuration hash



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# File 'lib/rspec-system/node_set/vagrant.rb', line 16

def initialize(setname, config)
  super
  @vagrant_path = File.expand_path(File.join(RSpec.configuration.system_tmp, 'vagrant_projects', setname))
end

Instance Method Details

#create_vagrantfile ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Create the Vagrantfile for the NodeSet.



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# File 'lib/rspec-system/node_set/vagrant.rb', line 121

def create_vagrantfile
  log.info "[Vagrant#create_vagrantfile] Creating vagrant file here: #{@vagrant_path}"
  FileUtils.mkdir_p(@vagrant_path)
  File.open(File.expand_path(File.join(@vagrant_path, "Vagrantfile")), 'w') do |f|
    f.write('Vagrant::Config.run do |c|')
    nodes.each do |k,v|
      log.debug "Filling in content for #{k}"

      ps = v.provider_specifics['vagrant']

      f.write(<<-EOS)
  c.vm.define '#{k}' do |v|
v.vm.host_name = '#{k}'
v.vm.box = '#{ps['box']}'
v.vm.box_url = '#{ps['box_url']}'
v.vm.base_mac = '#{randmac}'
  end
      EOS
    end
    f.write('end')
  end
  log.debug "[Vagrant#create_vagrantfile] Finished creating vagrant file"
  nil
end

#rcp(opts) ⇒ Boolean

TODO:

This is damn ugly, because we ssh in as vagrant, we copy to a temp path then move it later. Its slow and brittle and we need a better solution. Its also very Linux-centrix in its use of temp dirs.

Transfer files to a host in the NodeSet.

Parameters:

  • opts (Hash) —

    options

Returns:

  • (Boolean) —

    returns true if command succeeded, false otherwise



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# File 'lib/rspec-system/node_set/vagrant.rb', line 83

def rcp(opts)
  #log.debug("[Vagrant@rcp] called with #{opts.inspect}")

  dest = opts[:d].name
  source = opts[:sp]
  dest_path = opts[:dp]

  # Grab a remote path for temp transfer
  tmpdest = tmppath

  # Do the copy and print out results for debugging
  cmd = "scp -r -F '#{ssh_config}' '#{source}' #{dest}:#{tmpdest}"
  puts "------------------"
  puts "localhost$ #{cmd}"
  r = systemu cmd

  result = {
    :exit_code => r[0].exitstatus,
    :stdout => r[1],
    :stderr => r[2]
  }

  print "#{result[:stdout]}"
  print "#{result[:stderr]}"
  puts "Exit code: #{result[:exit_code]}"

  # Now we move the file into their final destination
  result = run(:n => opts[:d], :c => "mv #{tmpdest} #{dest_path}")
  if result[:exit_code] == 0
    return true
  else
    return false
  end
end

#run(opts) ⇒ Hash

Run a command on a host in the NodeSet.

Parameters:

  • opts (Hash) —

    options

Returns:

  • (Hash) —

    a hash containing :exit_code, :stdout and :stderr



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# File 'lib/rspec-system/node_set/vagrant.rb', line 64

def run(opts)
  dest = opts[:n].name
  cmd = opts[:c]

  ssh_channels = RSpec.configuration.ssh_channels
  puts "-----------------"
  puts "#{dest}$ #{cmd}"
  result = ssh_exec!(ssh_channels[dest], "cd /tmp && sudo sh -c '#{cmd}'")
  puts "-----------------"
  result
end

#setup ⇒ void

This method returns an undefined value.

Setup the NodeSet by starting all nodes.



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# File 'lib/rspec-system/node_set/vagrant.rb', line 24

def setup
  log.info "[Vagrant#setup] Begin setting up vagrant"

  create_vagrantfile()

  teardown()

  log.info "[Vagrant#setup] Running 'vagrant up'"
  vagrant("up")

  # Establish ssh connectivity
  ssh_channels = {}
  nodes.each do |k,v|
    log.info "[Vagrant#setup] establishing Net::SSH channel with #{k}"
    chan = Net::SSH.start(k, 'vagrant', :config => ssh_config)
    ssh_channels[k] = chan
  end
  RSpec.configuration.ssh_channels = ssh_channels

  nil
end

#ssh_config ⇒ String

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Here we get vagrant to drop the ssh_config its using so we can monopolize it for transfers and custom stuff. We drop it into a single file, and since its indexed based on our own node names its quite ideal.

Returns:

  • (String) —

    path to ssh_config file



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# File 'lib/rspec-system/node_set/vagrant.rb', line 152

def ssh_config
  ssh_config_path = File.expand_path(File.join(@vagrant_path, "ssh_config"))
  begin
    File.unlink(ssh_config_path)
  rescue Errno::ENOENT
  end
  self.nodes.each do |k,v|
    Dir.chdir(@vagrant_path) do
      result = systemu("vagrant ssh-config #{k} >> #{ssh_config_path}")
      puts result.inspect
    end
  end
  ssh_config_path
end

#teardown ⇒ void

This method returns an undefined value.

Shutdown the NodeSet by shutting down or pausing all nodes.



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# File 'lib/rspec-system/node_set/vagrant.rb', line 49

def teardown
  log.info "[Vagrant#teardown] closing all ssh channels"
  RSpec.configuration.ssh_channels.each do |k,v|
    v.close unless v.closed?
  end

  log.info "[Vagrant#teardown] Running 'vagrant destroy'"
  vagrant("destroy --force")
  nil
end

#vagrant(args) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

TODO:

This seems a little too specific these days, might want to generalize. It doesn’t use systemu, because we want to see the output immediately, but still - maybe we can make systemu do that.

Execute vagrant command in vagrant_path

Parameters:

  • args (String) —

    args to vagrant



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# File 'lib/rspec-system/node_set/vagrant.rb', line 174

def vagrant(args)
  Dir.chdir(@vagrant_path) do
    system("vagrant #{args}")
  end
  nil
end