123 lines
3.1 KiB
C++
123 lines
3.1 KiB
C++
// Copyright (c) Facebook, Inc. and its affiliates.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "rsocket/statemachine/ChannelResponder.h"
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namespace rsocket {
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void ChannelResponder::onSubscribe(
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std::shared_ptr<yarpl::flowable::Subscription> subscription) {
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publisherSubscribe(std::move(subscription));
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}
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void ChannelResponder::onNext(Payload response) {
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if (!publisherClosed()) {
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writePayload(std::move(response));
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}
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}
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void ChannelResponder::onComplete() {
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if (!publisherClosed()) {
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publisherComplete();
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writeComplete();
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tryCompleteChannel();
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}
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}
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void ChannelResponder::onError(folly::exception_wrapper ex) {
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if (!publisherClosed()) {
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publisherComplete();
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endStream(StreamCompletionSignal::ERROR);
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if (!ex.with_exception([this](rsocket::ErrorWithPayload& err) {
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writeApplicationError(std::move(err.payload));
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})) {
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writeApplicationError(ex.get_exception()->what());
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}
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tryCompleteChannel();
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}
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}
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void ChannelResponder::request(int64_t n) {
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ConsumerBase::generateRequest(n);
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}
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void ChannelResponder::cancel() {
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cancelConsumer();
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writeCancel();
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tryCompleteChannel();
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}
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void ChannelResponder::handlePayload(
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Payload&& payload,
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bool flagsComplete,
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bool flagsNext,
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bool flagsFollows) {
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payloadFragments_.addPayload(std::move(payload), flagsNext, flagsComplete);
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if (flagsFollows) {
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// there will be more fragments to come
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return;
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}
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bool finalFlagsComplete, finalFlagsNext;
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Payload finalPayload;
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std::tie(finalPayload, finalFlagsNext, finalFlagsComplete) =
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payloadFragments_.consumePayloadAndFlags();
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if (newStream_) {
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newStream_ = false;
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auto channelOutputSubscriber = onNewStreamReady(
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StreamType::CHANNEL,
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std::move(finalPayload),
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std::static_pointer_cast<ChannelResponder>(shared_from_this()));
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subscribe(std::move(channelOutputSubscriber));
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} else {
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processPayload(std::move(finalPayload), finalFlagsNext);
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}
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if (finalFlagsComplete) {
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completeConsumer();
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tryCompleteChannel();
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}
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}
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void ChannelResponder::handleRequestN(uint32_t n) {
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processRequestN(n);
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}
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void ChannelResponder::handleError(folly::exception_wrapper ew) {
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errorConsumer(std::move(ew));
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terminatePublisher();
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}
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void ChannelResponder::handleCancel() {
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terminatePublisher();
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tryCompleteChannel();
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}
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void ChannelResponder::endStream(StreamCompletionSignal signal) {
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terminatePublisher();
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ConsumerBase::endStream(signal);
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}
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void ChannelResponder::tryCompleteChannel() {
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if (publisherClosed() && consumerClosed()) {
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endStream(StreamCompletionSignal::COMPLETE);
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removeFromWriter();
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}
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}
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} // namespace rsocket
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