Class: Protobuf::Rpc::Services::Base

Inherits:
Protobuf::Rpc::Service
  • Object
show all
Defined in:
lib/protobuf/rpc/services/base.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.define_rpc(method, req = ::Protobuf::Rpc::Messages::RpcCompressedMessage, res = ::Protobuf::Rpc::Messages::RpcCompressedMessage) ⇒ Object 



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# File 'lib/protobuf/rpc/services/base.rb', line 30

def self.define_rpc(method, req = ::Protobuf::Rpc::Messages::RpcCompressedMessage, res = ::Protobuf::Rpc::Messages::RpcCompressedMessage)
  self.rpc method, req, res

  define_method(method) do
    class_name = method.to_s.camelize.gsub('!', 'Bang').gsub('?', 'QuestionMark')
    result = nil
    req = Serializer.load(request)

    logger.debug(req.to_hash)

    begin
      interaction = "#{self.class.namespace}::Interactions::#{self.class.name.demodulize}::#{class_name}".constantize
    rescue LoadError, NameError => e
      logger.error(e)
      NewRelic::Agent.notice_error(e) if defined?(NewRelic::Agent)
      result = ::Protobuf::Rpc::MethodNotFound.new("host: #{::Socket.gethostname}, message: #{e.message}")
      result.set_backtrace(e.backtrace)
    else
      begin
        result = interaction.run!(req.to_hash)
        case result
          when ::Protobuf::Message
            result
          when ::ActiveRecord::Base, ::ActiveRecord::Relation
            result = result.to_proto(deprecated: false, except: interaction.except_attributes, include: interaction.include_attributes)
          else
            result.respond_to?(:to_proto) ? result.to_proto : result
        end
      rescue => e
        logger.error(e)
        NewRelic::Agent.notice_error(e) if defined?(NewRelic::Agent)
        result = e
      end
    end

    compress_with result
  end

  add_transaction_tracer method
end

.inherit_rpcs! ⇒ Object 



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# File 'lib/protobuf/rpc/services/base.rb', line 26

def self.inherit_rpcs!
  superclass.rpcs.keys.each { |x| define_rpc(x) }
end

.inherited(subclass) ⇒ Object 



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# File 'lib/protobuf/rpc/services/base.rb', line 16

def self.inherited(subclass)
  require 'new_relic/agent'
  subclass.include ::NewRelic::Agent::Instrumentation::ControllerInstrumentation
  subclass.inherit_rpcs!
end

.namespace ⇒ Object 



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# File 'lib/protobuf/rpc/services/base.rb', line 22

def self.namespace
  self.name.deconstantize.deconstantize
end

Instance Method Details

#compress_with(msg, serializer: :MSGPACK) ⇒ Object 



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# File 'lib/protobuf/rpc/services/base.rb', line 9

def compress_with(msg, serializer: :MSGPACK)
  if msg.is_a?(StandardError)
    msg = ::Protobuf::Rpc::Messages::Error.new(error_class: msg.class.name, error_message: msg.message, error_backtrace: msg.backtrace)
  end
  respond_with Serializer.dump(msg, serializer: serializer)
end