Class: Metacrunch::Elasticsearch::Writer

Inherits:
Object
  • Object
show all
Defined in:
lib/metacrunch/elasticsearch/writer.rb

Instance Method Summary collapse

Constructor Details

#initialize(uri, log: false, bulk_size: 250, autoflush: true) ⇒ Writer

Returns a new instance of Writer.



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# File 'lib/metacrunch/elasticsearch/writer.rb', line 8

def initialize(uri, log: false, bulk_size: 250, autoflush: true)
  unless uri.starts_with?("elasticsearch://")
    raise ArgumentError, "URI must be an elasticsearch URI (elasticsearch://...)"
  end

  @uri       = URI(uri)
  @log       = log
  @bulk_size = bulk_size
  @buffer    = []
  @autoflush = autoflush
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/metacrunch/elasticsearch/writer.rb', line 47

def close
  flush
end

#flush ⇒ Object 



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# File 'lib/metacrunch/elasticsearch/writer.rb', line 36

def flush
  if @buffer.length > 0
    result = client.bulk(body: @buffer.inject([]){ |_body, _data| _body << { index: _data } })
    raise RuntimeError if result["errors"]
  end

  true
ensure
  @buffer = []
end

#write(data, options = {}) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/metacrunch/elasticsearch/writer.rb', line 20

def write(data, options = {})
  id = data.delete(:id) || data.delete(:_id)
  raise ArgumentError, "Missing id. You must provide 'id' or '_id' as part of the data" unless id

  @buffer << {
    _index: @uri.index,
    _type: @uri.type,
    _id: id,
    data: data
  }

  flush if @autoflush && @bulk_size > 0 && @buffer.length >= @bulk_size

  true
end