Class: Gitlab::QA::Docker::Engine

Inherits:
Object
  • Object
show all
Defined in:
lib/gitlab/qa/docker/engine.rb

Constant Summary collapse

DOCKER_HOST = 
ENV['DOCKER_HOST'] || 'http://localhost'
PRIVILEGED_COMMANDS = 
[/^iptables.*/].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(stream_output: false) ⇒ Engine

Returns a new instance of Engine.



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# File 'lib/gitlab/qa/docker/engine.rb', line 12

def initialize(stream_output: false)
  @stream_output = stream_output
end

Instance Attribute Details

#stream_output ⇒ Object (readonly)

Returns the value of attribute stream_output.



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# File 'lib/gitlab/qa/docker/engine.rb', line 10

def stream_output
  @stream_output
end

Instance Method Details

#attach(name, &block) ⇒ Object 



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# File 'lib/gitlab/qa/docker/engine.rb', line 93

def attach(name, &block)
  Docker::Command.execute("attach --sig-proxy=false #{name}", &block)
end

#container_exists?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gitlab/qa/docker/engine.rb', line 121

def container_exists?(name)
  !Docker::Command.execute("container list --all --format '{{.Names}}' --filter name=^#{name}$").empty?
end

#copy(name, src_path, dest_path) ⇒ Object 



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# File 'lib/gitlab/qa/docker/engine.rb', line 97

def copy(name, src_path, dest_path)
  Docker::Command.execute("cp #{src_path} #{name}:#{dest_path}")
end

#exec(name, command) ⇒ Object 



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# File 'lib/gitlab/qa/docker/engine.rb', line 82

def exec(name, command)
  cmd = ['exec']
  cmd << '--privileged' if privileged_command?(command)
  Docker::Command.execute(%(#{cmd.join(' ')} #{name} bash -c "#{command.gsub('"', '\\"')}"))
end

#hostname ⇒ Object 



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# File 'lib/gitlab/qa/docker/engine.rb', line 16

def hostname
  URI(DOCKER_HOST).host
end

#inspect(name) ⇒ Object 



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# File 'lib/gitlab/qa/docker/engine.rb', line 145

def inspect(name)
  Docker::Command.new('inspect').then do |command|
    yield command if block_given?

    command << name

    command.execute!
  end
end

#login(username:, password:, registry:) ⇒ Object 



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# File 'lib/gitlab/qa/docker/engine.rb', line 20

def (username:, password:, registry:)
  Docker::Command.execute(%(login --username "#{username}" --password "#{password}" #{registry}), mask_secrets: password)
end

#manifest_exists?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gitlab/qa/docker/engine.rb', line 113

def manifest_exists?(name)
  Docker::Command.execute("manifest inspect #{name}")
rescue Docker::Shellout::StatusError
  false
else
  true
end

#network_create(name) ⇒ Object 



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# File 'lib/gitlab/qa/docker/engine.rb', line 129

def network_create(name)
  Docker::Command.execute("network create #{name}")
end

#network_exists?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gitlab/qa/docker/engine.rb', line 125

def network_exists?(name)
  !Docker::Command.execute("network list --format '{{.Name}}' --filter name=^#{name}$").empty?
end

#port(name, port) ⇒ Object 



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# File 'lib/gitlab/qa/docker/engine.rb', line 133

def port(name, port)
  Docker::Command.execute("port #{name} #{port}/tcp")
end

#privileged_command?(command) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gitlab/qa/docker/engine.rb', line 44

def privileged_command?(command)
  PRIVILEGED_COMMANDS.each do |privileged_regex|
    return true if command.match(privileged_regex)
  end

  false
end

#ps(name = nil) ⇒ Object 



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# File 'lib/gitlab/qa/docker/engine.rb', line 141

def ps(name = nil)
  Docker::Command.execute(['ps', name].compact.join(' '))
end

#pull(image:, tag: nil, quiet: true) ⇒ Object 



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# File 'lib/gitlab/qa/docker/engine.rb', line 24

def pull(image:, tag: nil, quiet: true)
  Docker::Command.new("pull").tap do |command|
    command << "-q" if quiet
    command << full_image_name(image, tag)

    command.execute!
  end
end

#read_file(image, tag, path, &block) ⇒ Object 



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# File 'lib/gitlab/qa/docker/engine.rb', line 88

def read_file(image, tag, path, &block)
  cat_file = "run --rm --entrypoint /bin/cat #{full_image_name(image, tag)} #{path}"
  Docker::Command.execute(cat_file, &block)
end

#remove(name) ⇒ Object 



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# File 'lib/gitlab/qa/docker/engine.rb', line 109

def remove(name)
  Docker::Command.execute("rm -f #{name}")
end

#restart(name) ⇒ Object 



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# File 'lib/gitlab/qa/docker/engine.rb', line 101

def restart(name)
  Docker::Command.execute("restart #{name}")
end

#run(image:, tag: nil, args: []) ⇒ Object 



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# File 'lib/gitlab/qa/docker/engine.rb', line 33

def run(image:, tag: nil, args: [])
  Docker::Command.new('run', stream_output: stream_output).tap do |command|
    yield command if block_given?

    command << full_image_name(image, tag)
    command << args if args.any?

    command.execute!
  end
end

#running?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gitlab/qa/docker/engine.rb', line 137

def running?(name)
  Docker::Command.execute("ps -f name=#{name}").include?(name)
end

#stop(name) ⇒ Object 



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# File 'lib/gitlab/qa/docker/engine.rb', line 105

def stop(name)
  Docker::Command.execute("stop #{name}")
end

#write_files(name) ⇒ Object

Write to file(s) in the Docker container specified by @param name

Examples:

engine.write_files('gitlab-abc123') do |files|
  files.append('/etc/hosts', '127.0.0.1 localhost')
  files.write('/opt/other', <<~TEXT
    This is content
    That goes within /opt/other
  TEXT)

Parameters:

  • name —

    The name of the Docker Container



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# File 'lib/gitlab/qa/docker/engine.rb', line 61

def write_files(name)
  exec(name, yield(
    Class.new do
      # @param file The name of the file
      # @param contents The content of the file to write
      # @param expand_vars Set false if you need to write an environment variable '$' to a file. The variable should be escaped \\\$
      def self.write(file, contents, expand_vars = true)
        if expand_vars
          %(echo "#{contents}" > #{file};)
        else
          %(echo '#{contents}' > #{file};)
        end
      end

      def self.append(file, contents)
        %(echo "#{contents}" >> #{file};)
      end
    end
  ))
end