Class: PgSync::Client

Inherits:
Object
  • Object
show all
Defined in:
lib/pgsync.rb

Instance Method Summary collapse

Constructor Details

#initialize(args) ⇒ Client

Returns a new instance of Client.



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# File 'lib/pgsync.rb', line 24

def initialize(args)
  $stdout.sync = true
  @exit = false
  @arguments, @options = parse_args(args)
  @mutex = MultiProcessing::Mutex.new
end

Instance Method Details

#perform ⇒ Object

TODO clean up this mess



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# File 'lib/pgsync.rb', line 32

def perform
  return if @exit

  start_time = Time.now

  args, opts = @arguments, @options
  [:to, :from, :to_safe, :exclude].each do |opt|
    opts[opt] ||= config[opt.to_s]
  end
  command = args[0]

  # setup hack
  if opts[:setup]
    command = "setup"
    args[1] = args[0]
  end
  if command == "setup"
    setup(db_config_file(args[1]) || config_file || ".pgsync.yml")
  else
    source = parse_source(opts[:from])
    abort "No source" unless source
    source_uri = parse_uri(source)

    destination = parse_source(opts[:to])
    abort "No destination" unless destination
    destination_uri = parse_uri(destination)
    abort "Danger! Add `to_safe: true` to `.pgsync.yml` if the destination is not localhost or 127.0.0.1" unless %(localhost 127.0.0.1).include?(destination_uri.host) || opts[:to_safe]

    print_uri("From", source_uri)
    print_uri("To", destination_uri)

    from_uri = source_uri
    to_uri = destination_uri

    tables = table_list(args, opts, from_uri)

    if args[0] == "schema" || opts[:schema_only]
      time =
        benchmark do
          log "* Dumping schema"
          tables = tables.keys.map { |t| "-t #{t}" }.join(" ")
          dump_command = "pg_dump --verbose --schema-only --no-owner --no-acl --clean #{tables} #{to_url(source_uri)}"
          restore_command = "psql -q -d #{to_url(destination_uri)}"
          system("#{dump_command} | #{restore_command}")
        end

      log "* DONE (#{time.round(1)}s)"
    else
      with_connection(to_uri, timeout: 3) do |conn|
        tables.keys.each do |table|
          unless table_exists?(conn, table, "public")
            abort "Table does not exist in destination: #{table}"
          end
        end
      end

      if opts[:list]
        if args[0] == "groups"
          pretty_list (config["groups"] || {}).keys
        else
          pretty_list tables.keys
        end
      else
        in_parallel(tables) do |table, table_opts|
          sync_table(table, opts.merge(table_opts), from_uri, to_uri)
        end

        time = Time.now - start_time
        log "Completed in #{time.round(1)}s"
      end
    end
  end
  true
end