Class: Dynamoid::AdapterPlugin::AwsSdkV3::BatchGetItem

Inherits:
Object
  • Object
show all
Defined in:
lib/dynamoid/adapter_plugin/aws_sdk_v3/batch_get_item.rb

Overview

Documentation docs.aws.amazon.com/sdkforruby/api/Aws/DynamoDB/Client.html#batch_get_item-instance_method

Defined Under Namespace

Classes: Response

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(client, tables_with_ids, options = {}) ⇒ BatchGetItem

Returns a new instance of BatchGetItem.



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# File 'lib/dynamoid/adapter_plugin/aws_sdk_v3/batch_get_item.rb', line 12

def initialize(client, tables_with_ids, options = {})
  @client = client
  @tables_with_ids = tables_with_ids
  @options = options
end

Instance Attribute Details

#client ⇒ Object (readonly)

Returns the value of attribute client.



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# File 'lib/dynamoid/adapter_plugin/aws_sdk_v3/batch_get_item.rb', line 10

def client
  @client
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/dynamoid/adapter_plugin/aws_sdk_v3/batch_get_item.rb', line 10

def options
  @options
end

#tables_with_ids ⇒ Object (readonly)

Returns the value of attribute tables_with_ids.



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# File 'lib/dynamoid/adapter_plugin/aws_sdk_v3/batch_get_item.rb', line 10

def tables_with_ids
  @tables_with_ids
end

Instance Method Details

#call ⇒ Object 



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# File 'lib/dynamoid/adapter_plugin/aws_sdk_v3/batch_get_item.rb', line 18

def call
  results = {}

  tables_with_ids.each do |table, ids|
    if ids.blank?
      results[table.name] = []
      next
    end

    ids = Array(ids).dup

    while ids.present?
      batch = ids.shift(Dynamoid::Config.batch_size)
      request = build_request(table, batch)
      api_response = client.batch_get_item(request)
      response = Response.new(api_response)

      if block_given?
        # return batch items as a result
        batch_results = Hash.new([].freeze)
        batch_results.update(response.items_grouped_by_table)

        yield(batch_results, response.successful_partially?)
      else
        # collect all the batches to return at the end
        results.update(response.items_grouped_by_table) { |_, its1, its2| its1 + its2 }
      end

      if response.successful_partially?
        ids += response.unprocessed_ids(table)
      end
    end
  end

  results unless block_given?
end