Class: Elasticsearch::Transport::Transport::HTTP::Curb

Inherits:
Object
  • Object
show all
Includes:
Base
Defined in:
lib/elasticsearch/transport/transport/http/curb.rb

Overview

Alternative HTTP transport implementation, using the [Curb](rubygems.org/gems/curb) client.

See Also:

Constant Summary

Constants included from Base

Base::DEFAULT_MAX_RETRIES, Base::DEFAULT_PORT, Base::DEFAULT_PROTOCOL, Base::DEFAULT_RELOAD_AFTER, Base::DEFAULT_RESURRECT_AFTER, Base::DEFAULT_SERIALIZER_CLASS, Base::SANITIZED_PASSWORD

Instance Attribute Summary

Attributes included from Base

#connections, #counter, #hosts, #last_request_at, #logger, #options, #protocol, #reload_after, #reload_connections, #resurrect_after, #serializer, #sniffer, #tracer

Instance Method Summary collapse

Methods included from Base

#__build_connections, #__close_connections, #__convert_to_json, #__full_url, #__log_response, #__raise_transport_error, #__rebuild_connections, #__trace, #get_connection, #initialize, #reload_connections!, #resurrect_dead_connections!

Methods included from Loggable

#log_debug, #log_error, #log_fatal, #log_info, #log_warn

Instance Method Details

#__build_connection(host, options = {}, block = nil) ⇒ Connections::Connection

Builds and returns a connection


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# File 'lib/elasticsearch/transport/transport/http/curb.rb', line 84

def __build_connection(host, options={}, block=nil)
  client = ::Curl::Easy.new
  apply_headers(client, options)
  client.url = __full_url(host)

  if host[:user]
    client.http_auth_types = host[:auth_type] || :basic
    client.username = host[:user]
    client.password = host[:password]
  end

  client.instance_eval(&block) if block

  Connections::Connection.new :host => host, :connection => client
end

#headers(connection) ⇒ Object


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# File 'lib/elasticsearch/transport/transport/http/curb.rb', line 66

def headers(connection)
  headers_string = connection.connection.header_str
  return nil if headers_string.nil?

  response_headers = headers_string&.split(/\\r\\n|\r\n/).reject(&:empty?)
  response_headers.shift # Removes HTTP status string
  processed_header = response_headers.flat_map { |s| s.scan(/^(\S+): (.+)/) }
  headers_hash = Hash[processed_header].transform_keys(&:downcase)
  if headers_hash['content-type']&.match?(/application\/json/)
    headers_hash['content-type'] = 'application/json'
  end
  headers_hash
end

#host_unreachable_exceptionsArray

Returns an array of implementation specific connection errors.

Returns:

  • (Array)

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# File 'lib/elasticsearch/transport/transport/http/curb.rb', line 104

def host_unreachable_exceptions
  [
    ::Curl::Err::HostResolutionError,
    ::Curl::Err::ConnectionFailedError,
    ::Curl::Err::GotNothingError,
    ::Curl::Err::RecvError,
    ::Curl::Err::SendError,
    ::Curl::Err::TimeoutError
  ]
end

#perform_request(method, path, params = {}, body = nil, headers = nil, opts = {}) ⇒ Response

Performs the request by invoking Base#perform_request with a block.

Returns:

See Also:


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# File 'lib/elasticsearch/transport/transport/http/curb.rb', line 35

def perform_request(method, path, params={}, body=nil, headers=nil, opts={})
  super do |connection, url|
    connection.connection.url = connection.full_url(path, params)

    case method
    when 'HEAD'
      connection.connection.set :nobody, true
    when 'GET', 'POST', 'PUT', 'DELETE'
      connection.connection.set :nobody, false
      connection.connection.put_data = __convert_to_json(body) if body
      if headers
        if connection.connection.headers
          connection.connection.headers.merge!(headers)
        else
          connection.connection.headers = headers
        end
      end
    else
      raise ArgumentError, "Unsupported HTTP method: #{method}"
    end

    connection.connection.http(method.to_sym)

    Response.new(
      connection.connection.response_code,
      decompress_response(connection.connection.body_str),
      headers(connection)
    )
  end
end