Module: PulseMeter::Mixins::Dumper::ClassMethods

Defined in:
lib/pulse-meter/mixins/dumper.rb

Instance Method Summary collapse

Instance Method Details

#list_names ⇒ Array<String>

Lists all dumped objects’ names

Returns:

  • (Array<String>)

Raises:

  • (RestoreError) —

    if list cannot be retrieved for any reason



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# File 'lib/pulse-meter/mixins/dumper.rb', line 62

def list_names
  PulseMeter.redis.hkeys(DUMP_REDIS_KEY)
rescue
  raise RestoreError, "cannot get data from redis"
end

#list_objects ⇒ Array<Object>

Safely restores all dumped objects

Returns:

  • (Array<Object>) 


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# File 'lib/pulse-meter/mixins/dumper.rb', line 70

def list_objects
  list_names.each_with_object([]) do |name, objects|
    begin
      objects << restore(name)
    rescue
    end
  end
end

#restore(name) ⇒ Object

Restores object from Redis

Parameters:

  • name (String) —

    object name

Returns:

  • (Object)

Raises:

  • (RestoreError) —

    if object cannot be restored for any reason



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# File 'lib/pulse-meter/mixins/dumper.rb', line 52

def restore(name)
  serialized_obj = PulseMeter.redis.hget(DUMP_REDIS_KEY, name)
  YAML::load(serialized_obj)
rescue
  raise RestoreError, "cannot restore #{name}"
end