Module: Preconditions

Defined in:
lib/docker-sync/preconditions.rb

Class Method Summary collapse

Class Method Details

.check_all_preconditions ⇒ Object 



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# File 'lib/docker-sync/preconditions.rb', line 4

def self.check_all_preconditions
  docker_available
  docker_running
  unison_available
  unox_available
  macfsevents_available
end

.docker_available ⇒ Object 



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# File 'lib/docker-sync/preconditions.rb', line 12

def self.docker_available
  if (find_executable0 'docker').nil?
    raise('Could not find docker binary in path. Please install it, e.g. using "brew install docker" or install docker-for-mac')
  end
end

.docker_running ⇒ Object 



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# File 'lib/docker-sync/preconditions.rb', line 18

def self.docker_running
  `docker ps`
  if $?.exitstatus > 0
    raise('No docker daemon seems to be running. Did you start your docker-for-mac / docker-machine?')
  end
end

.docker_sync_available ⇒ Object 



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# File 'lib/docker-sync/preconditions.rb', line 31

def self.docker_sync_available
  if (find_executable0 'docker-sync').nil?
    raise('No docker-sync available. Install it by "gem install docker-sync"')
  end
end

.fswatch_available ⇒ Object 



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# File 'lib/docker-sync/preconditions.rb', line 25

def self.fswatch_available
  if (find_executable0 'fswatch').nil?
    raise('No fswatch available. Install it by "brew install fswatch"')
  end
end

.macfsevents_available ⇒ Object 



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# File 'lib/docker-sync/preconditions.rb', line 64

def self.macfsevents_available
  `python -c 'import fsevents'`
  unless $?.success?
    Thor::Shell::Basic.new.say_status 'warning','Could not find macfsevents. Will try to install it using pip', :red
    sudo = false
    if find_executable0('python') == '/usr/bin/python'
      Thor::Shell::Basic.new.say_status 'ok','You seem to use the system python, we will need sudo below'
      sudo = true
      cmd2 = 'sudo easy_install pip && sudo pip install macfsevents'
    else
      Thor::Shell::Basic.new.say_status 'ok','You seem to have a custom python, using non-sudo commands'
      sudo = false
      cmd2 = 'easy_install pip && pip install macfsevents'
    end
    if sudo
      question = 'I will ask you for you root password to install macfsevent by running (This will ask for sudo, since we use the system python)'
    else
      question = 'I will now install macfsevents for you by running'
    end

    Thor::Shell::Basic.new.say_status 'info', "#{question}: `#{cmd2}\n\n"
    if Thor::Shell::Basic.new.yes?('Shall i continue? (y/N)')
      system cmd2
      if $?.exitstatus > 0
        raise('Failed to install macfsevents, please file an issue with the output of the error')
      end
      `python -c 'import fsevents'`
      unless $?.success?
        raise('Somehow could not successfully install macfsevents even though i treed. Please report this issue')
      end
    else
      raise('Please install macfsevents manually, see https://github.com/EugenMayer/docker-sync/wiki/1.-Installation')
    end
  end


end

.rsync_available ⇒ Object 



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# File 'lib/docker-sync/preconditions.rb', line 37

def self.rsync_available
  if (find_executable0 'rsync').nil?
    raise('Could not find rsync binary in path. Please install it, e.g. using "brew install rsync"')
  end
end

.unison_available ⇒ Object 



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# File 'lib/docker-sync/preconditions.rb', line 43

def self.unison_available
  if (find_executable0 'unison').nil?
    raise('Could not find unison binary in path. Please install it, e.g. using "brew install unison"')
  end
end

.unox_available ⇒ Object 



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# File 'lib/docker-sync/preconditions.rb', line 49

def self.unox_available
  if (find_executable0 'unison-fsmonitor').nil?
    cmd1 = 'curl "https://raw.githubusercontent.com/hnsl/unox/master/unox.py" -o "/usr/local/bin/unison-fsmonitor" \
    && chmod +x /usr/local/bin/unison-fsmonitor'

    Thor::Shell::Basic.new.say_status 'warning', 'Could not find unison-fsmonitor (for file watching) binary in $PATH. We try to install unox now (for manual instracutions see https://github.com/hnsl/unox.)', :red
    if Thor::Shell::Basic.new.yes?('Shall I install unison-fsmonitor for you? (y/N)')
      system cmd1
    else
      raise("Please install it, see https://github.com/hnsl/unox, or simply run :\n #{cmd1} && #{cmd2}")
    end
  end

end