Contents

# frozen_string_literal: true

require 'memoist'
require 'faraday'
require 'better-faraday'

module Peatio
  module Infura
    class Client
      Error = Class.new(StandardError)

    class ConnectionError < Error; end

      class ResponseError < Error
        def initialize(code, msg)
        super "#{msg} (#{code})"
        end
      end

      extend Memoist

    def initialize(endpoint, idle_timeout: 5)
        @json_rpc_endpoint = URI.parse(endpoint)
        @json_rpc_call_id = 0
        @idle_timeout = idle_timeout
      end

      def json_rpc(method, params = [])
      response = connection.post \
          current_conn.url_prefix,
          { jsonrpc: '2.0', id: rpc_call_id, method: method, params: params }.to_json,
          {'Accept' => 'application/json',
           'Content-Type' => 'application/json'}
        response.assert_success!
        response = JSON.parse(response.body)
      response['error'].tap { |error| raise ResponseError.new(error['code'], error['message']) if error }
        response.fetch('result')
      rescue Faraday::Error => e
        raise ConnectionError, e
    rescue StandardError => e
      raise Error, e
      end

      private

      def rpc_call_id
        @json_rpc_call_id += 1
      end

      def connection
        @connection ||= Faraday.new(@json_rpc_endpoint) do |f|
          f.adapter :net_http_persistent, pool_size: 5, idle_timeout: @idle_timeout
        end.tap do |connection|
          unless @json_rpc_endpoint.user.blank?
            connection.basic_auth(@json_rpc_endpoint.user, @json_rpc_endpoint.password)
          end
        end
      end

    end
  end

end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
peatio-infura-0.1.61	lib/peatio/infura/client.rb