Module: Pygmy::DockerService

Included in:
Dnsmasq, Haproxy, SshAgent
Defined in:
lib/pygmy/docker_service.rb

Instance Method Summary collapse

Instance Method Details

#container_exists?(container_name = self.container_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pygmy/docker_service.rb', line 25

def container_exists?(container_name = self.container_name)
  !!(self.ps(true) =~ /#{container_name}/)
end

#delete(container_name = self.container_name) ⇒ Object 



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# File 'lib/pygmy/docker_service.rb', line 48

def delete(container_name = self.container_name)
  if self.container_exists?
    self.stop if self.running?
    Sh.run_command("docker rm #{Shellwords.escape(container_name)}")
  end
  !self.container_exists?
end

#has_docker_client? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pygmy/docker_service.rb', line 39

def has_docker_client?
  Sh.run_command('which docker').success?
end

#ps(all = false) ⇒ Object 



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# File 'lib/pygmy/docker_service.rb', line 29

def ps(all = false)
  cmd = "docker ps#{all ? ' -a' : ''}"
  ret = Sh.run_command(cmd)
  if ret.success?
    return ret.stdout
  else
    raise RuntimeError.new("Failure running command '#{cmd}'")
  end
end

#running?(container_name = self.container_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pygmy/docker_service.rb', line 21

def running?(container_name = self.container_name)
  !!(self.ps =~ /#{container_name}/)
end

#start ⇒ Object 



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# File 'lib/pygmy/docker_service.rb', line 5

def start
  unless self.running?
    success = if self.container_exists?
                Sh.run_command(self.start_cmd).success?
              else
                Sh.run_command(self.run_cmd).success?
              end
    unless success
      raise RuntimeError.new(
        "Failed to run #{self.container_name}.  Command #{self.run_cmd} failed"
      )
    end
  end
  self.running?
end

#start_cmd ⇒ Object 



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# File 'lib/pygmy/docker_service.rb', line 56

def start_cmd
  "docker start #{Shellwords.escape(self.container_name)}"
end

#stop(container_name = self.container_name) ⇒ Object 



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# File 'lib/pygmy/docker_service.rb', line 43

def stop(container_name = self.container_name)
  Sh.run_command("docker kill #{Shellwords.escape(container_name)}") if self.running?
  !self.running?
end