Class: Moe::Sequence::ItemFetcher

Inherits:
Object
  • Object
show all
Defined in:
lib/moe/sequence/item_fetcher.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(table_name, owner_id, uid) ⇒ ItemFetcher

Returns a new instance of ItemFetcher.



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# File 'lib/moe/sequence/item_fetcher.rb', line 7

def initialize(table_name, owner_id, uid)
  @dyna = Dyna.new
  @items = []
  @owner_id = owner_id
  @sequence_id = 1
  @table_name = table_name
  @uid = uid
end

Instance Attribute Details

#dyna ⇒ Object

Returns the value of attribute dyna.



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# File 'lib/moe/sequence/item_fetcher.rb', line 4

def dyna
  @dyna
end

#items ⇒ Object

Returns the value of attribute items.



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# File 'lib/moe/sequence/item_fetcher.rb', line 4

def items
  @items
end

#owner_id ⇒ Object (readonly)

Returns the value of attribute owner_id.



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# File 'lib/moe/sequence/item_fetcher.rb', line 5

def owner_id
  @owner_id
end

#sequence_id ⇒ Object

Returns the value of attribute sequence_id.



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# File 'lib/moe/sequence/item_fetcher.rb', line 4

def sequence_id
  @sequence_id
end

#table_name ⇒ Object (readonly)

Returns the value of attribute table_name.



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# File 'lib/moe/sequence/item_fetcher.rb', line 5

def table_name
  @table_name
end

#uid ⇒ Object (readonly)

Returns the value of attribute uid.



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# File 'lib/moe/sequence/item_fetcher.rb', line 5

def uid
  @uid
end

Instance Method Details

#fetch(limit) ⇒ Object 



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# File 'lib/moe/sequence/item_fetcher.rb', line 16

def fetch(limit)
  request = {
    request_items: {
      table_name => { keys: [] }
    }
  }
  keys = request[:request_items][table_name][:keys]

  limit.times do
    keys << dyna.explode( Locksmith.key(owner_id, sequence_id, uid) )

    self.sequence_id += 1
  end

  munge dyna.dynamodb.batch_get_item(request)
end