Class: DockerSync::SyncStrategy::Unison
- Inherits:
-
Object
- Object
- DockerSync::SyncStrategy::Unison
- Includes:
- Execution, Thor::Shell
- Defined in:
- lib/docker-sync/sync_strategy/unison.rb
Constant Summary collapse
- UNISON_CONTAINER_PORT =
'5000'
Instance Method Summary collapse
- #clean ⇒ Object
- #expand_ignore_strings ⇒ Object
- #get_container_name ⇒ Object
-
#get_host_port(container_name, container_port) ⇒ Object
noinspection RubyUnusedLocalVariable.
- #get_volume_name ⇒ Object
- #increase_watcher_limit ⇒ Object
-
#initialize(sync_name, options) ⇒ Unison
constructor
A new instance of Unison.
- #reset_container ⇒ Object
- #run ⇒ Object
- #start_container ⇒ Object
- #stop ⇒ Object
- #stop_container ⇒ Object
- #sync ⇒ Object
- #sync_options ⇒ Object
-
#sync_prefer ⇒ Object
cares about conflict resolution.
- #watch ⇒ Object
Methods included from Execution
#fork_exec, #thread_exec, #with_time
Constructor Details
#initialize(sync_name, options) ⇒ Unison
Returns a new instance of Unison.
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# File 'lib/docker-sync/sync_strategy/unison.rb', line 18 def initialize(sync_name, ) @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::Unison.ensure! rescue StandardError => e say_status 'error', "#{@sync_name} has been configured to sync with unison, but no unison available", :red say_status 'error', e., :red exit 1 end end |
Instance Method Details
#clean ⇒ Object
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# File 'lib/docker-sync/sync_strategy/unison.rb', line 253 def clean reset_container end |
#expand_ignore_strings ⇒ Object
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# File 'lib/docker-sync/sync_strategy/unison.rb', line 94 def = [] exclude_type = 'Name' unless @options['sync_excludes_type'].nil? exclude_type = @options['sync_excludes_type'] end unless @options['sync_excludes'].nil? = @options['sync_excludes'].map do |pattern| if exclude_type == 'none' # the ignore type like Name / Path are part of the pattern ignore_string = "#{pattern}" else ignore_string = "#{exclude_type} #{pattern}" end "-ignore='#{ignore_string}'" end end end |
#get_container_name ⇒ Object
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# File 'lib/docker-sync/sync_strategy/unison.rb', line 235 def get_container_name return "#{@sync_name}" end |
#get_host_port(container_name, container_port) ⇒ Object
noinspection RubyUnusedLocalVariable
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# File 'lib/docker-sync/sync_strategy/unison.rb', line 223 def get_host_port(container_name, container_port) cmd = 'docker inspect --format=\'{{(index (index .NetworkSettings.Ports "5000/tcp") 0).HostPort}}\' ' + container_name say_status 'command', cmd, :white if @options['verbose'] stdout, stderr, exit_status = Open3.capture3(cmd) unless exit_status.success? say_status 'command', cmd say_status 'error', "Error getting mapped port, exit code #{$?.exitstatus}", :red say_status 'message', stderr end return stdout.gsub("\n",'') end |
#get_volume_name ⇒ Object
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# File 'lib/docker-sync/sync_strategy/unison.rb', line 239 def get_volume_name return @sync_name end |
#increase_watcher_limit ⇒ Object
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# File 'lib/docker-sync/sync_strategy/unison.rb', line 42 def increase_watcher_limit current_max_files_per_proc = `sysctl kern.maxfilesperproc | awk '{print $2}'` if current_max_files_per_proc.to_f < @options['max_inotify_watches'] cmd = 'sudo sysctl -w kern.maxfilesperproc=' + @options['max_inotify_watches'].to_s say_status 'command', cmd, :white `#{cmd}` || raise('Unable to increase maxfilesperproc') else say_status 'command', 'Current maxfilesperproc set to ' + current_max_files_per_proc.to_s, :white end current_max_files = `sysctl kern.maxfiles | awk '{print $2}'` if current_max_files.to_f < @options['max_inotify_watches'] cmd = 'sudo sysctl -w kern.maxfiles=' + @options['max_inotify_watches'].to_s say_status 'command', cmd, :white `#{cmd}` || raise('Unable to increase maxfiles') else say_status 'command', 'Current maxfiles set to ' + current_max_files.to_s, :white end end |
#reset_container ⇒ Object
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# File 'lib/docker-sync/sync_strategy/unison.rb', line 247 def reset_container stop_container `docker ps -a | grep #{get_container_name} && docker rm #{get_container_name}` `docker volume ls -q | grep #{get_volume_name} && docker volume rm #{get_volume_name}` end |
#run ⇒ Object
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# File 'lib/docker-sync/sync_strategy/unison.rb', line 36 def run increase_watcher_limit if @options.key?('max_inotify_watches') start_container sync end |
#start_container ⇒ Object
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# File 'lib/docker-sync/sync_strategy/unison.rb', line 144 def start_container say_status 'ok', "Starting unison for sync #{@sync_name}", :white container_name = get_container_name volume_name = get_volume_name env = {} raise 'sync_user is no longer supported, since it ise no needed, use sync_userid only please' if @options.key?('sync_user') env['UNISON_SRC'] = '-socket 5000' env['UNISON_DEST'] = '/app_sync' env['MONIT_ENABLE'] = 'false' env['MONIT_INTERVAL'] = '' env['MONIT_HIGH_CPU_CYCLES'] = '' env['UNISON_ARGS'] = '' ignore_strings = env['UNISON_ARGS'] << ignore_strings.join(' ') env['UNISON_WATCH_ARGS'] = '' 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 # start unison-image in unison socket mode mode env['HOSTSYNC_ENABLE']=0 env['UNISONSOCKET_ENABLE']=1 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}$'` if exists == '' run_privileged = '' run_privileged = '--privileged' if @options.key?('max_inotify_watches') #TODO: replace by the minimum capabilities required tz_expression = '-e TZ=$(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_name}:#{@options['dest']}\" -e APP_VOLUME=#{@options['dest']} #{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', "creating #{container_name} container", :white if @options['verbose'] cmd = "docker run -p '#{@options['sync_host_ip']}::#{UNISON_CONTAINER_PORT}' -v #{volume_name}:#{@options['dest']} -e APP_VOLUME=#{@options['dest']} #{tz_expression} #{additional_docker_env} #{run_privileged} --name #{container_name} -d #{@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'] `#{cmd}` || raise('Start failed') say_status 'ok', "starting initial sync of #{container_name}", :white if @options['verbose'] # wait until container is started, then sync: sync_host_port = get_host_port(get_container_name, UNISON_CONTAINER_PORT) cmd = "unison -testserver #{@options['dest']} \"socket://#{@options['sync_host_ip']}:#{sync_host_port}\"" say_status 'command', cmd, :white if @options['verbose'] attempt = 0 max_attempt = @options['max_attempt'] || 5 loop do # noinspection RubyUnusedLocalVariable stdout, stderr, exit_status = Open3.capture3(cmd) break if exit_status == 0 attempt += 1 raise "Failed to start unison container in time, try to increase max_attempt (currently #{max_attempt}) in your configuration. See https://github.com/EugenMayer/docker-sync/wiki/2.-Configuration for more informations" if attempt > max_attempt sleep 1 end sync say_status 'success', 'Unison server started', :green end |
#stop ⇒ Object
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# File 'lib/docker-sync/sync_strategy/unison.rb', line 257 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. end end |
#stop_container ⇒ Object
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# File 'lib/docker-sync/sync_strategy/unison.rb', line 243 def stop_container `docker ps | grep #{get_container_name} && docker stop #{get_container_name} && docker wait #{get_container_name}` end |
#sync ⇒ Object
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# File 'lib/docker-sync/sync_strategy/unison.rb', line 72 def sync args = cmd = 'unison ' + args.join(' ') say_status 'command', cmd, :white if @options['verbose'] stdout, stderr, exit_status = Open3.capture3(cmd) if not exit_status.success? say_status 'error', "Error starting sync, exit code #{$?.exitstatus}", :red say_status 'message', stdout say_status 'message', stderr else TerminalNotifier.notify( "Synced #{@options['src']}", :title => @sync_name ) if @options['notify_terminal'] say_status 'ok', "Synced #{@options['src']}", :white if @options['verbose'] say_status 'output', stdout end end end |
#sync_options ⇒ Object
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# File 'lib/docker-sync/sync_strategy/unison.rb', line 116 def args = [] args = + args args.push("'#{@options['src']}'") args.push('-auto') args.push('-batch') args.push(sync_prefer) args.push(@options['sync_args']) if @options.key?('sync_args') sync_host_port = get_host_port(get_container_name, UNISON_CONTAINER_PORT) args.push("socket://#{@options['sync_host_ip']}:#{sync_host_port}") if @options.key?('sync_group') || @options.key?('sync_groupid') raise('Unison does not support sync_group, sync_groupid - please use rsync if you need that') end return args end |
#sync_prefer ⇒ Object
cares about conflict resolution
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# File 'lib/docker-sync/sync_strategy/unison.rb', line 134 def sync_prefer case @options.fetch('sync_prefer', 'default') when 'default' then "-prefer '#{@options['src']}' -copyonconflict" # thats our default, if nothing is set when 'src' then "-prefer '#{@options['src']}'" when 'dest' then "-prefer 'socket://#{@options['sync_host_ip']}:#{sync_host_port}'" else "-prefer '#{@options['sync_prefer']}'" end end |
#watch ⇒ Object
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# File 'lib/docker-sync/sync_strategy/unison.rb', line 61 def watch args = args.push("-repeat watch") cmd = '' cmd = cmd + 'ulimit -n ' + @options['max_inotify_watches'].to_s + ' && ' if @options.key?('max_inotify_watches') cmd = cmd + 'unison ' + args.join(' ') say_status 'command', cmd, :white if @options['verbose'] fork_exec(cmd, "Sync #{@sync_name}", :blue) end |