68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
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// 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/PublisherBase.h"
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#include <glog/logging.h>
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namespace rsocket {
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PublisherBase::PublisherBase(uint32_t initialRequestN)
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: initialRequestN_(initialRequestN) {}
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void PublisherBase::publisherSubscribe(
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std::shared_ptr<yarpl::flowable::Subscription> subscription) {
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if (state_ == State::CLOSED) {
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subscription->cancel();
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return;
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}
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DCHECK(!producingSubscription_);
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producingSubscription_ = std::move(subscription);
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if (initialRequestN_) {
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producingSubscription_->request(initialRequestN_.consumeAll());
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}
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}
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void PublisherBase::publisherComplete() {
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state_ = State::CLOSED;
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producingSubscription_ = nullptr;
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}
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bool PublisherBase::publisherClosed() const {
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return state_ == State::CLOSED;
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}
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void PublisherBase::processRequestN(uint32_t requestN) {
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if (requestN == 0 || state_ == State::CLOSED) {
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return;
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}
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// We might not have the subscription set yet as there can be REQUEST_N frames
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// scheduled on the executor before onSubscribe method.
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if (producingSubscription_) {
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producingSubscription_->request(requestN);
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} else {
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initialRequestN_.add(requestN);
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}
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}
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void PublisherBase::terminatePublisher() {
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state_ = State::CLOSED;
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if (auto subscription = std::move(producingSubscription_)) {
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subscription->cancel();
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}
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}
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} // namespace rsocket
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