Method: Beaker::Docker#initialize

Defined in:
lib/beaker/hypervisor/docker.rb

#initialize(hosts, options) ⇒ Docker

Docker hypvervisor initializtion Env variables supported: DOCKER_REGISTRY: Docker registry URL DOCKER_HOST: Remote docker host

Parameters:

  • hosts (Host, Array<Host>, String, Symbol) —

    One or more hosts to act upon, or a role (String or Symbol) that identifies one or more hosts.

  • options (Hash{Symbol=>String}) —

    Options to pass on to the hypervisor



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# File 'lib/beaker/hypervisor/docker.rb', line 11

def initialize(hosts, options)
  require 'docker'
  @options = options
  @logger = options[:logger]
  @hosts = hosts

  # increase the http timeouts as provisioning images can be slow
  default_docker_options = { :write_timeout => 300, :read_timeout => 300 }.merge(::Docker.options || {})
  # Merge docker options from the entry in hosts file
  ::Docker.options = default_docker_options.merge(@options[:docker_options] || {})
  # assert that the docker-api gem can talk to your docker
  # enpoint.  Will raise if there is a version mismatch
  begin
    ::Docker.validate_version!
  rescue Excon::Errors::SocketError => e
    raise "Docker instance not connectable.\nError was: #{e}\nCheck your DOCKER_HOST variable has been set\nIf you are on OSX or Windows, you might not have Docker Machine setup correctly: https://docs.docker.com/machine/\n"
  end

  # Pass on all the logging from docker-api to the beaker logger instance
  ::Docker.logger = @logger

  # Find out what kind of remote instance we are talking against
  if ::Docker.version['Version'] =~ /swarm/
    @docker_type = 'swarm'
    unless ENV['DOCKER_REGISTRY']
      raise "Using Swarm with beaker requires a private registry. Please setup the private registry and set the 'DOCKER_REGISTRY' env var"
    else
      @registry = ENV['DOCKER_REGISTRY']
    end
  else
    @docker_type = 'docker'
  end

end