Module: HTTPX::Plugins::GRPC::InstanceMethods

Defined in:
lib/httpx/plugins/grpc.rb

Instance Method Summary collapse

Instance Method Details

#build_stub(origin, service: nil, compression: false) ⇒ Object 



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# File 'lib/httpx/plugins/grpc.rb', line 180

def build_stub(origin, service: nil, compression: false)
  scheme = @options.ssl.empty? ? "http" : "https"

  origin = URI.parse("#{scheme}://#{origin}")

  session = self

  if service && service.respond_to?(:rpc_descs)
    # it's a grpc generic service
    service.rpc_descs.each do |rpc_name, rpc_desc|
      rpc_opts = {
        marshal_method: rpc_desc.marshal_method,
        unmarshal_method: rpc_desc.unmarshal_method,
      }

      input = rpc_desc.input
      input = input.type if input.respond_to?(:type)

      output = rpc_desc.output
      if output.respond_to?(:type)
        rpc_opts[:stream] = true
        output = output.type
      end

      session = session.rpc(rpc_name, input, output, **rpc_opts)
    end

    service = service.service_name
  end

  session.with(origin: origin, grpc_service: service, grpc_compression: compression)
end

#execute(rpc_method, input, deadline: DEADLINE, metadata: nil, **opts) ⇒ Object 



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# File 'lib/httpx/plugins/grpc.rb', line 213

def execute(rpc_method, input,
            deadline: DEADLINE,
            metadata: nil,
            **opts)
  grpc_request = build_grpc_request(rpc_method, input, deadline: deadline, metadata: metadata, **opts)
  response = request(grpc_request, **opts)
  response.raise_for_status unless opts[:stream]
  GRPC::Call.new(response)
end

#rpc(rpc_name, input, output, **opts) ⇒ Object

Raises:



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# File 'lib/httpx/plugins/grpc.rb', line 145

def rpc(rpc_name, input, output, **opts)
  rpc_name = rpc_name.to_s
  raise Error, "rpc #{rpc_name} already defined" if @options.grpc_rpcs.key?(rpc_name)

  rpc_opts = {
    deadline: @options.grpc_deadline,
  }.merge(opts)

  local_rpc_name = rpc_name.underscore

  session_class = Class.new(self.class) do
    # define rpc method with ruby style name
    class_eval(<<-OUT, __FILE__, __LINE__ + 1)
      def #{local_rpc_name}(input, **opts)              # def grpc_action(input, **opts)
        rpc_execute("#{local_rpc_name}", input, **opts) #   rpc_execute("grpc_action", input, **opts)
      end                                               # end
    OUT

    # define rpc method with original name
    unless local_rpc_name == rpc_name
      class_eval(<<-OUT, __FILE__, __LINE__ + 1)
        def #{rpc_name}(input, **opts)                    # def grpcAction(input, **opts)
          rpc_execute("#{local_rpc_name}", input, **opts) #   rpc_execute("grpc_action", input, **opts)
        end                                               # end
      OUT
    end
  end

  session_class.new(@options.merge(
                      grpc_rpcs: @options.grpc_rpcs.merge(
                        local_rpc_name => [rpc_name, input, output, rpc_opts]
                      ).freeze
                    ))
end

#with_channel_credentials(ca_path, key = nil, cert = nil, **ssl_opts) ⇒ Object 



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# File 'lib/httpx/plugins/grpc.rb', line 126

def with_channel_credentials(ca_path, key = nil, cert = nil, **ssl_opts)
  # @type var ssl_params: ::Hash[::Symbol, untyped]
  ssl_params = {
    **ssl_opts,
    ca_file: ca_path,
  }
  if key
    key = File.read(key) if File.file?(key)
    ssl_params[:key] = OpenSSL::PKey.read(key)
  end

  if cert
    cert = File.read(cert) if File.file?(cert)
    ssl_params[:cert] = OpenSSL::X509::Certificate.new(cert)
  end

  with(ssl: ssl_params)
end