Class: Flapjack::CLI::Migrate

Inherits:
Object
  • Object
show all
Includes:
Utility
Defined in:
lib/flapjack/cli/migrate.rb

Instance Method Summary collapse

Methods included from Utility

#hashify, #load_template, #local_timezone, #relative_time_ago, #remove_utc_offset, #stringify, #symbolize, #time_period_in_words, #truncate

Constructor Details

#initialize(global_options, options) ⇒ Migrate

Returns a new instance of Migrate.



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# File 'lib/flapjack/cli/migrate.rb', line 53

def initialize(global_options, options)
  @global_options = global_options
  @options = options

  config = Flapjack::Configuration.new

  if options[:source].nil? || options[:source].strip.empty?
    config.load(global_options[:config])
    config_env = config.all
  end

  @source_redis_options = config.for_redis
end

Instance Method Details

#to_v2 ⇒ Object 



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# File 'lib/flapjack/cli/migrate.rb', line 67

def to_v2
  source_addr = (@options[:source].nil? || @options[:source].strip.empty?) ?
    @source_redis_options : @options[:source]

  @source_redis = case source_addr
  when Hash
    Redis.new(source_addr.merge(:driver => :hiredis))
  when String
    Redis.new(:url => source_addr, :driver => :hiredis)
  else
    exit_now! "could not understand source Redis config"
  end

  @source_redis_version = @source_redis.info['redis_version']

  dest_addr = @options[:destination]
  dest_redis = Redis.new(:url => dest_addr, :driver => :hiredis)

  # Zermelo.logger = ::Logger.new('/tmp/zermelo_migrate.log')

  do_rule_migration = @options[:rules]

  Zermelo.redis = dest_redis

  dest_db_size = Zermelo.redis.dbsize
  if dest_db_size > 0
    if @options[:force]
      Zermelo.redis.flushdb
      puts "Cleared #{@options[:destination]} db"
    else
      exit_now! "Destination db #{@options[:destination]} has " \
        "#{dest_db_size} keys, and the --force option was not provided"
    end
  end

  # key is old contact_id, value = new contact id
  @contact_id_cache = {}

  # key is entity_name:check_name, value is zermelo record
  @check_name_cache = {}

  # key is tag name, value is zermelo record
  @tag_name_cache = {}

  # cache old entity/check <-> contact linkage, use as limiting set in
  # rule construction
  @check_ids_by_contact_id_cache = {}

  @current_entity_names = @source_redis.zrange('current_entities', 0, -1)
  @current_check_names = source_keys_matching('current_checks:?*')

  @time = Time.now

  puts "#{Time.now.iso8601} Migrating contacts and media"
  migrate_contacts_and_media

  puts "#{Time.now.iso8601} Migrating checks"
  migrate_checks

  puts "Migrating check states & actions"
  Flapjack::Data::Check.lock(
    Flapjack::Data::State,
    Flapjack::Data::ScheduledMaintenance,
    Flapjack::Data::UnscheduledMaintenance
  ) do

    idx = 0
    check_count = Flapjack::Data::Check.count

    Flapjack::Data::Check.sort(:name).each do |check|
      idx += 1
      puts "#{Time.now.iso8601} #{idx}/#{check_count} #{check.name}"
      migrate_states(check)
      migrate_actions(check)
      migrate_scheduled_maintenances(check)
      migrate_unscheduled_maintenances(check)

      if (idx % 500) == 0
        # reopen connections -- avoid potential timeout for long-running jobs
        @source_redis.quit
        @source_redis = case source_addr
        when Hash
          Redis.new(source_addr.merge(:driver => :hiredis))
        when String
          Redis.new(:url => source_addr, :driver => :hiredis)
        end

        Zermelo.redis.quit
        Zermelo.redis = Redis.new(:url => dest_addr, :driver => :hiredis)
      end
    end
  end

  if do_rule_migration
    puts "#{Time.now.iso8601} Migrating contact/entity linkages"
    migrate_contact_entity_linkages

    puts "#{Time.now.iso8601} Migrating rules"
    migrate_rules
  end

rescue Exception => e
  puts e.message
  trace = e.backtrace.join("\n")
  puts trace
  # TODO output data, set exit status
  exit 1
end