Class: DockerSync::SyncStrategy::NativeOsx

Inherits:
Object
  • Object
show all
Includes:
Execution, Thor::Shell
Defined in:
lib/docker-sync/sync_strategy/native_osx.rb

Instance Method Summary collapse

Methods included from Execution

#fork_exec, #thread_exec, #with_time

Constructor Details

#initialize(sync_name, options) ⇒ NativeOsx

Returns a new instance of NativeOsx.


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# File 'lib/docker-sync/sync_strategy/native_osx.rb', line 19

def initialize(sync_name, options)
  @options = options
  @sync_name = sync_name
  # if a custom image is set, apply it
  if @options.key?('image')
    @docker_image = @options['image']
  else
    @docker_image = 'eugenmayer/unison:2.51.2.1'
  end

  begin
    Dependencies::Docker.ensure!
  rescue StandardError => e
    say_status 'error', "#{@sync_name} has been configured to sync with native docker volume, but docker is not found", :red
    say_status 'error', e.message, :red
    exit 1
  end
end

Instance Method Details

#cleanObject


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# File 'lib/docker-sync/sync_strategy/native_osx.rb', line 129

def clean
  reset_container
end

#get_container_nameObject


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# File 'lib/docker-sync/sync_strategy/native_osx.rb', line 143

def get_container_name
  @sync_name.to_s
end

#runObject


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# File 'lib/docker-sync/sync_strategy/native_osx.rb', line 115

def run
  start_container
  sync
end

#start_containerObject


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# File 'lib/docker-sync/sync_strategy/native_osx.rb', line 38

def start_container
  say_status 'ok', "Starting native_osx for sync #{@sync_name}", :white
  container_name = get_container_name
  host_sync_src = File.realpath(@options['src'])
  volume_app_sync_name = @sync_name
  env = {}
  raise 'sync_user is no longer supported, since it is not needed. Use sync_userid only please' if @options.key?('sync_user')

  env['UNISON_SRC'] = '/host_sync'
  env['UNISON_DEST'] = '/app_sync'

  env['UNISON_ARGS'] = ''
  if @options.key?('sync_args')
    sync_args = @options['sync_args']
    sync_args = @options['sync_args'].join(' ') if @options['sync_args'].kind_of?(Array)
    env['UNISON_ARGS'] = sync_args
  end

  ignore_strings = expand_ignore_strings
  env['UNISON_ARGS'] << ' ' << ignore_strings.join(' ')
  env['UNISON_ARGS'] << ' ' << sync_prefer
  env['UNISON_ARGS'] << ' -numericids -auto -batch'
  env['UNISON_WATCH_ARGS'] = '-repeat watch'

  env['MAX_INOTIFY_WATCHES'] = @options['max_inotify_watches'] if @options.key?('max_inotify_watches')
  if @options['sync_userid'] == 'from_host'
    env['OWNER_UID'] = Process.uid
  else
    env['OWNER_UID'] = @options['sync_userid'] if @options.key?('sync_userid')
  end

  monit_options = {
    monit_enable: 'MONIT_ENABLE',
    monit_interval: 'MONIT_INTERVAL',
    monit_high_cpu_cycles: 'MONIT_HIGH_CPU_CYCLES',
  }

  monit_options.each do |key, env_key|
    env[env_key] = @options[key.to_s] if @options.key?(key.to_s)
  end

  host_disk_mount_mode = '' # see https://github.com/moby/moby/pull/31047
  host_disk_mount_mode = ":#{@options['host_disk_mount_mode']}" if @options.key?('host_disk_mount_mode')

  additional_docker_env = env.map{ |key,value| "-e #{key}=\"#{value}\"" }.join(' ')
  running = `docker ps --filter 'status=running' --filter 'name=#{container_name}' --format "{{.Names}}" | grep '^#{container_name}$'`
  if running == ''
    say_status 'ok', "#{container_name} container not running", :white if @options['verbose']
    exists = `docker ps --filter "status=exited" --filter "name=#{container_name}" --format "{{.Names}}" | grep '^#{container_name}$'`
    if exists == ''
      say_status 'ok', "creating #{container_name} container", :white if @options['verbose']
      run_privileged = ''
      run_privileged = '--privileged' if @options.key?('max_inotify_watches') #TODO: replace by the minimum capabilities required
      tz_expression = '-e TZ=$(basename $(dirname `readlink /etc/localtime`))/$(basename `readlink /etc/localtime`)'
      say_status 'ok', 'Starting precopy', :white if @options['verbose']
      # we just run the precopy script and remove the container
      cmd = "docker run --rm -v \"#{volume_app_sync_name}:/app_sync\" -v \"#{host_sync_src}:/host_sync#{host_disk_mount_mode}\" -e HOST_VOLUME=/host_sync -e APP_VOLUME=/app_sync #{tz_expression} #{additional_docker_env} #{run_privileged} --name #{container_name} #{@docker_image} /usr/local/bin/precopy_appsync"
      say_status 'precopy', cmd, :white if @options['verbose']
      system(cmd) || raise('Precopy failed')
      say_status 'ok', 'Starting container', :white if @options['verbose']
      # this will be run below and start unison, since we did not manipulate CMD
      cmd = "docker run -d -v \"#{volume_app_sync_name}:/app_sync\" -v \"#{host_sync_src}:/host_sync#{host_disk_mount_mode}\" -e HOST_VOLUME=/host_sync -e APP_VOLUME=/app_sync #{tz_expression} #{additional_docker_env} #{run_privileged} --name #{container_name} #{@docker_image}"
    else
      say_status 'ok', "starting #{container_name} container", :white if @options['verbose']
      cmd = "docker start #{container_name} && docker exec #{container_name} supervisorctl restart unison"
    end
  else
    say_status 'ok', "#{container_name} container still running, restarting unison in container", :blue
    cmd = "docker exec #{container_name} supervisorctl restart unison"
  end
  say_status 'command', cmd, :white if @options['verbose']
  system(cmd) || raise('Start failed')
  say_status 'ok', "starting initial sync of #{container_name}", :white if @options['verbose']
  # wait until container is started, then sync:
  say_status 'success', 'Sync container started', :green
end

#stopObject


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# File 'lib/docker-sync/sync_strategy/native_osx.rb', line 133

def stop
  say_status 'ok', "Stopping sync container #{get_container_name}"
  begin
    stop_container
  rescue StandardError => e
    say_status 'error', "Stopping failed of #{get_container_name}:", :red
    puts e.message
  end
end

#syncObject


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# File 'lib/docker-sync/sync_strategy/native_osx.rb', line 124

def sync
  # nop
end

#watchObject


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# File 'lib/docker-sync/sync_strategy/native_osx.rb', line 120

def watch
  # nop
end