Class: Construi::Container

Inherits:
Object
  • Object
show all
Defined in:
lib/construi/container.rb

Defined Under Namespace

Classes: Error

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(container) ⇒ Container

Returns a new instance of Container.



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# File 'lib/construi/container.rb', line 8

def initialize(container)
  @container = container
end

Class Method Details

.create(image, cmd, env) ⇒ Object 



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# File 'lib/construi/container.rb', line 48

def self.create(image, cmd, env)
  wrap Docker::Container.create(
    'Cmd' => cmd.split,
    'Image' => image.id,
    'Env' => env.to_json,
    'Tty' => false,
    'WorkingDir' => '/var/workspace',
    'HostConfig' => { 'Binds' => ["#{Dir.pwd}:/var/workspace"] })
end

.run(image, cmd, env) ⇒ Object 



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# File 'lib/construi/container.rb', line 69

def self.run(image, cmd, env)
  use(image, cmd, env, &:run)
end

.use(image, cmd, env) ⇒ Object 



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# File 'lib/construi/container.rb', line 62

def self.use(image, cmd, env)
  container = create(image, cmd, env)
  yield container
ensure
  container.delete unless container.nil?
end

.wrap(container) ⇒ Object 



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# File 'lib/construi/container.rb', line 58

def self.wrap(container)
  new container
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/construi/container.rb', line 44

def ==(other)
  other.is_a? Container and id == other.id
end

#attach_stdout ⇒ Object 



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# File 'lib/construi/container.rb', line 20

def attach_stdout
  @container.attach(:stream => true, :logs => true) { |s, c| puts c; $stdout.flush }
  true
rescue Docker::Error::TimeoutError
  puts 'Failed to attach to stdout'.yellow
  false
end

#commit ⇒ Object 



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# File 'lib/construi/container.rb', line 28

def commit
  Image.wrap(@container.commit)
end

#delete ⇒ Object 



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# File 'lib/construi/container.rb', line 16

def delete
  @container.delete
end

#id ⇒ Object 



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# File 'lib/construi/container.rb', line 12

def id
  @container.id
end

#run ⇒ Object

Raises:



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# File 'lib/construi/container.rb', line 32

def run
  @container.start
  attached = attach_stdout
  status_code = @container.wait['StatusCode']

  puts @container.logs(:stdout => true) unless attached

  raise Error, "Cmd returned status code: #{status_code}" unless status_code == 0

  commit
end