88 lines
2.5 KiB
C++
88 lines
2.5 KiB
C++
// 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 "rsocket/RSocketResponder.h"
|
|
#include "rsocket/benchmarks/Latch.h"
|
|
|
|
namespace rsocket {
|
|
|
|
/// Responder that always sends back a fixed message.
|
|
class FixedResponder : public RSocketResponder {
|
|
public:
|
|
explicit FixedResponder(const std::string& message)
|
|
: message_{folly::IOBuf::copyBuffer(message)} {}
|
|
|
|
/// Infinitely streams back the message.
|
|
std::shared_ptr<yarpl::flowable::Flowable<Payload>> handleRequestStream(
|
|
Payload,
|
|
StreamId) override {
|
|
return yarpl::flowable::Flowable<Payload>::fromGenerator(
|
|
[msg = message_->clone()] { return Payload(msg->clone()); });
|
|
}
|
|
|
|
std::shared_ptr<yarpl::single::Single<Payload>> handleRequestResponse(
|
|
Payload,
|
|
StreamId) override {
|
|
return yarpl::single::Singles::fromGenerator<Payload>(
|
|
[msg = message_->clone()] { return Payload(msg->clone()); });
|
|
}
|
|
|
|
private:
|
|
std::unique_ptr<folly::IOBuf> message_;
|
|
};
|
|
|
|
/// Subscriber that requests N items and cancels the subscription once all of
|
|
/// them arrive. Signals a latch when it terminates.
|
|
class BoundedSubscriber : public yarpl::flowable::BaseSubscriber<Payload> {
|
|
public:
|
|
BoundedSubscriber(Latch& latch, size_t requested)
|
|
: latch_{latch}, requested_{requested} {}
|
|
|
|
void onSubscribeImpl() override {
|
|
this->request(requested_);
|
|
}
|
|
|
|
void onNextImpl(Payload) override {
|
|
if (received_.fetch_add(1) == requested_ - 1) {
|
|
DCHECK(!terminated_.exchange(true));
|
|
latch_.post();
|
|
|
|
// After this cancel we could be destroyed.
|
|
this->cancel();
|
|
}
|
|
}
|
|
|
|
void onCompleteImpl() override {
|
|
if (!terminated_.exchange(true)) {
|
|
latch_.post();
|
|
}
|
|
}
|
|
|
|
void onErrorImpl(folly::exception_wrapper) override {
|
|
if (!terminated_.exchange(true)) {
|
|
latch_.post();
|
|
}
|
|
}
|
|
|
|
private:
|
|
Latch& latch_;
|
|
|
|
std::atomic_bool terminated_{false};
|
|
size_t requested_{0};
|
|
std::atomic<size_t> received_{0};
|
|
};
|
|
} // namespace rsocket
|