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ExampleSubscriber.h
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54 lines (47 loc) · 1.69 KB
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// Copyright (c) Facebook, Inc. and its affiliates.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#pragma once
#include <folly/ExceptionWrapper.h>
#include <condition_variable>
#include <mutex>
#include "rsocket/Payload.h"
#include "yarpl/Flowable.h"
#include "yarpl/flowable/Subscriber.h"
/**
* Subscriber that logs all events.
* Request 5 items to begin with, then 3 more after each receipt of 3.
*/
namespace rsocket_example {
class ExampleSubscriber : public yarpl::flowable::Subscriber<rsocket::Payload> {
public:
~ExampleSubscriber();
ExampleSubscriber(int initialRequest, int numToTake);
void onSubscribe(std::shared_ptr<yarpl::flowable::Subscription>
subscription) noexcept override;
void onNext(rsocket::Payload) noexcept override;
void onComplete() noexcept override;
void onError(folly::exception_wrapper ex) noexcept override;
void awaitTerminalEvent();
private:
int initialRequest_;
int thresholdForRequest_;
int numToTake_;
int requested_;
int received_;
std::shared_ptr<yarpl::flowable::Subscription> subscription_;
bool terminated_{false};
std::mutex m_;
std::condition_variable terminalEventCV_;
};
} // namespace rsocket_example