diff options
Diffstat (limited to 'src/ruby/lib/grpc/generic/active_call.rb')
| -rw-r--r-- | src/ruby/lib/grpc/generic/active_call.rb | 68 |
1 files changed, 53 insertions, 15 deletions
diff --git a/src/ruby/lib/grpc/generic/active_call.rb b/src/ruby/lib/grpc/generic/active_call.rb index 4260d85437..23688dc924 100644 --- a/src/ruby/lib/grpc/generic/active_call.rb +++ b/src/ruby/lib/grpc/generic/active_call.rb @@ -58,7 +58,7 @@ module GRPC include Core::TimeConsts include Core::CallOps extend Forwardable - attr_reader(:deadline) + attr_reader :deadline, :metadata_sent, :metadata_to_send def_delegators :@call, :cancel, :metadata, :write_flag, :write_flag=, :peer, :peer_cert, :trailing_metadata @@ -101,7 +101,7 @@ module GRPC # @param metadata_received [true|false] indicates if metadata has already # been received. Should always be true for server calls def initialize(call, marshal, unmarshal, deadline, started: true, - metadata_received: false) + metadata_received: false, metadata_to_send: nil) fail(TypeError, '!Core::Call') unless call.is_a? Core::Call @call = call @deadline = deadline @@ -110,6 +110,20 @@ module GRPC @metadata_received = metadata_received @metadata_sent = started @op_notifier = nil + + fail(ArgumentError, 'Already sent md') if started && metadata_to_send + @metadata_to_send = metadata_to_send || {} unless started + @send_initial_md_mutex = Mutex.new + end + + # Sends the initial metadata that has yet to be sent. + # Does nothing if metadata has already been sent for this call. + def send_initial_metadata + @send_initial_md_mutex.synchronize do + return if @metadata_sent + @metadata_tag = ActiveCall.client_invoke(@call, @metadata_to_send) + @metadata_sent = true + end end # output_metadata are provides access to hash that can be used to @@ -187,7 +201,7 @@ module GRPC # @param marshalled [false, true] indicates if the object is already # marshalled. def remote_send(req, marshalled = false) - # TODO(murgatroid99): ensure metadata was sent + send_initial_metadata GRPC.logger.debug("sending #{req}, marshalled? #{marshalled}") payload = marshalled ? req : @marshal.call(req) @call.run_batch(SEND_MESSAGE => payload) @@ -203,6 +217,7 @@ module GRPC # list, mulitple metadata for its key are sent def send_status(code = OK, details = '', assert_finished = false, metadata: {}) + send_initial_metadata ops = { SEND_STATUS_FROM_SERVER => Struct::Status.new(code, details, metadata) } @@ -303,7 +318,7 @@ module GRPC # a list, multiple metadata for its key are sent # @return [Object] the response received from the server def request_response(req, metadata: {}) - start_call(metadata) + merge_metadata_to_send(metadata) && send_initial_metadata remote_send(req) writes_done(false) response = remote_read @@ -327,7 +342,7 @@ module GRPC # a list, multiple metadata for its key are sent # @return [Object] the response received from the server def client_streamer(requests, metadata: {}) - start_call(metadata) + merge_metadata_to_send(metadata) && send_initial_metadata requests.each { |r| remote_send(r) } writes_done(false) response = remote_read @@ -353,7 +368,7 @@ module GRPC # a list, multiple metadata for its key are sent # @return [Enumerator|nil] a response Enumerator def server_streamer(req, metadata: {}) - start_call(metadata) + merge_metadata_to_send(metadata) && send_initial_metadata remote_send(req) writes_done(false) replies = enum_for(:each_remote_read_then_finish) @@ -392,9 +407,12 @@ module GRPC # a list, multiple metadata for its key are sent # @return [Enumerator, nil] a response Enumerator def bidi_streamer(requests, metadata: {}, &blk) - start_call(metadata) - bd = BidiCall.new(@call, @marshal, @unmarshal, + merge_metadata_to_send(metadata) && send_initial_metadata + bd = BidiCall.new(@call, + @marshal, + @unmarshal, metadata_received: @metadata_received) + bd.run_on_client(requests, @op_notifier, &blk) end @@ -410,8 +428,12 @@ module GRPC # # @param gen_each_reply [Proc] generates the BiDi stream replies def run_server_bidi(gen_each_reply) - bd = BidiCall.new(@call, @marshal, @unmarshal, - metadata_received: @metadata_received) + bd = BidiCall.new(@call, + @marshal, + @unmarshal, + metadata_received: @metadata_received, + req_view: MultiReqView.new(self)) + bd.run_on_server(gen_each_reply) end @@ -428,15 +450,23 @@ module GRPC @op_notifier.notify(self) end + # Add to the metadata that will be sent from the server. + # Fails if metadata has already been sent. + # Unused by client calls. + def merge_metadata_to_send(new_metadata = {}) + @send_initial_md_mutex.synchronize do + fail('cant change metadata after already sent') if @metadata_sent + @metadata_to_send.merge!(new_metadata) + end + end + private # Starts the call if not already started # @param metadata [Hash] metadata to be sent to the server. If a value is # a list, multiple metadata for its key are sent def start_call(metadata = {}) - return if @metadata_sent - @metadata_tag = ActiveCall.client_invoke(@call, metadata) - @metadata_sent = true + merge_metadata_to_send(metadata) && send_initial_metadata end def self.view_class(*visible_methods) @@ -454,12 +484,20 @@ module GRPC # SingleReqView limits access to an ActiveCall's methods for use in server # handlers that receive just one request. SingleReqView = view_class(:cancelled?, :deadline, :metadata, - :output_metadata, :peer, :peer_cert) + :output_metadata, :peer, :peer_cert, + :send_initial_metadata, + :metadata_to_send, + :merge_metadata_to_send, + :metadata_sent) # MultiReqView limits access to an ActiveCall's methods for use in # server client_streamer handlers. MultiReqView = view_class(:cancelled?, :deadline, :each_queued_msg, - :each_remote_read, :metadata, :output_metadata) + :each_remote_read, :metadata, :output_metadata, + :send_initial_metadata, + :metadata_to_send, + :merge_metadata_to_send, + :metadata_sent) # Operation limits access to an ActiveCall's methods for use as # a Operation on the client. |