Class: Artemis::Adapters::CurbAdapter

Inherits:
AbstractAdapter
  • Object
show all
Defined in:
lib/artemis/adapters/curb_adapter.rb

Constant Summary

Constants inherited from AbstractAdapter

AbstractAdapter::DEFAULT_HEADERS, AbstractAdapter::EMPTY_HEADERS

Instance Attribute Summary collapse

Attributes inherited from AbstractAdapter

#pool_size, #service_name, #timeout

Instance Method Summary collapse

Methods inherited from AbstractAdapter

#connection, #headers

Constructor Details

#initialize(uri, service_name:, timeout:, pool_size:) ⇒ CurbAdapter

Returns a new instance of CurbAdapter.



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# File 'lib/artemis/adapters/curb_adapter.rb', line 16

def initialize(uri, service_name: , timeout: , pool_size: )
  super

  @multi = Curl::Multi.new
  @multi.pipeline = Curl::CURLPIPE_MULTIPLEX if defined?(Curl::CURLPIPE_MULTIPLEX)
end

Instance Attribute Details

#multi ⇒ Object (readonly)

Returns the value of attribute multi.



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# File 'lib/artemis/adapters/curb_adapter.rb', line 14

def multi
  @multi
end

Instance Method Details

#execute(document:, operation_name: nil, variables: {}, context: {}) ⇒ Object 



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# File 'lib/artemis/adapters/curb_adapter.rb', line 23

def execute(document:, operation_name: nil, variables: {}, context: {})
  easy = Curl::Easy.new(uri.to_s)

  body = {}
  body["query"] = document.to_query_string
  body["variables"] = variables if variables.any?
  body["operationName"] = operation_name if operation_name

  easy.timeout     = timeout
  easy.multi       = multi
  easy.headers     = DEFAULT_HEADERS.merge(headers(context))
  easy.post_body   = JSON.generate(body)

  if defined?(Curl::CURLPIPE_MULTIPLEX)
    # This ensures libcurl waits for the connection to reveal if it is
    # possible to pipeline/multiplex on before it continues.
    easy.setopt(Curl::CURLOPT_PIPEWAIT, 1)
    easy.version = Curl::HTTP_2_0
  end

  easy.http_post

  case easy.response_code
  when 200, 400
    JSON.parse(easy.body)
  when 500..599
    raise Artemis::GraphQLServerError, "Received server error status #{easy.response_code}: #{easy.body}"
  else
    { "errors" => [{ "message" => "#{easy.response_code} #{easy.body}" }] }
  end
end