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[CELEBORN-1845][CIP-14] Add MessageDispatcher to cppClient #3077

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6 changes: 5 additions & 1 deletion cpp/celeborn/network/CMakeLists.txt
Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,8 @@
add_library(
network
STATIC
Message.cpp)
Message.cpp
MessageDispatcher.cpp)

target_include_directories(network PUBLIC ${CMAKE_BINARY_DIR})

Expand All @@ -25,6 +26,9 @@ target_link_libraries(
proto
utils
protocol
${WANGLE}
${FIZZ}
${LIBSODIUM_LIBRARY}
${FOLLY_WITH_DEPENDENCIES}
${GLOG}
${GFLAGS_LIBRARIES}
Expand Down
4 changes: 2 additions & 2 deletions cpp/celeborn/network/Message.h
Original file line number Diff line number Diff line change
Expand Up @@ -178,7 +178,7 @@ class RpcFailure : public Message {
class ChunkFetchSuccess : public Message {
public:
ChunkFetchSuccess(
protocol::StreamChunkSlice& streamChunkSlice,
const protocol::StreamChunkSlice& streamChunkSlice,
std::unique_ptr<memory::ReadOnlyByteBuffer>&& body)
: Message(CHUNK_FETCH_SUCCESS, std::move(body)),
streamChunkSlice_(streamChunkSlice) {}
Expand All @@ -201,7 +201,7 @@ class ChunkFetchSuccess : public Message {
class ChunkFetchFailure : public Message {
public:
ChunkFetchFailure(
protocol::StreamChunkSlice& streamChunkSlice,
const protocol::StreamChunkSlice& streamChunkSlice,
std::string&& errorString)
: Message(
CHUNK_FETCH_FAILURE,
Expand Down
257 changes: 257 additions & 0 deletions cpp/celeborn/network/MessageDispatcher.cpp
Original file line number Diff line number Diff line change
@@ -0,0 +1,257 @@
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/

#include "celeborn/network/MessageDispatcher.h"

#include "celeborn/protocol/TransportMessage.h"

namespace celeborn {
namespace network {
void MessageDispatcher::read(Context*, std::unique_ptr<Message> toRecvMsg) {
switch (toRecvMsg->type()) {
case Message::RPC_RESPONSE: {
RpcResponse* response = reinterpret_cast<RpcResponse*>(toRecvMsg.get());
bool found = true;
auto holder = requestIdRegistry_.withLock([&](auto& registry) {
auto search = registry.find(response->requestId());
if (search == registry.end()) {
LOG(WARNING)
<< "requestId " << response->requestId()
<< " not found when handling RPC_RESPONSE. Might be outdated already, ignored.";
found = false;
return MsgPromiseHolder{};
}
auto result = std::move(search->second);
registry.erase(response->requestId());
return std::move(result);
});
if (found) {
holder.msgPromise.setValue(std::move(toRecvMsg));
}
return;
}
case Message::RPC_FAILURE: {
RpcFailure* failure = reinterpret_cast<RpcFailure*>(toRecvMsg.get());
bool found = true;
auto holder = requestIdRegistry_.withLock([&](auto& registry) {
auto search = registry.find(failure->requestId());
if (search == registry.end()) {
LOG(WARNING)
<< "requestId " << failure->requestId()
<< " not found when handling RPC_FAILURE. Might be outdated already, ignored.";
found = false;
return MsgPromiseHolder{};
}
auto result = std::move(search->second);
registry.erase(failure->requestId());
return std::move(result);
});
LOG(ERROR) << "Rpc failed, requestId: " << failure->requestId()
<< " errorMsg: " << failure->errorMsg() << std::endl;
if (found) {
holder.msgPromise.setException(
folly::exception_wrapper(std::exception()));
}
return;
}
case Message::CHUNK_FETCH_SUCCESS: {
ChunkFetchSuccess* success =
reinterpret_cast<ChunkFetchSuccess*>(toRecvMsg.get());
auto streamChunkSlice = success->streamChunkSlice();
bool found = true;
auto holder = streamChunkSliceRegistry_.withLock([&](auto& registry) {
auto search = registry.find(streamChunkSlice);
if (search == registry.end()) {
LOG(WARNING)
<< "streamChunkSlice " << streamChunkSlice.toString()
<< " not found when handling CHUNK_FETCH_SUCCESS. Might be outdated already, ignored.";
found = false;
return MsgPromiseHolder{};
}
auto result = std::move(search->second);
registry.erase(streamChunkSlice);
return std::move(result);
});
if (found) {
holder.msgPromise.setValue(std::move(toRecvMsg));
}
return;
}
case Message::CHUNK_FETCH_FAILURE: {
ChunkFetchFailure* failure =
reinterpret_cast<ChunkFetchFailure*>(toRecvMsg.get());
auto streamChunkSlice = failure->streamChunkSlice();
bool found = true;
auto holder = streamChunkSliceRegistry_.withLock([&](auto& registry) {
auto search = registry.find(streamChunkSlice);
if (search == registry.end()) {
LOG(WARNING)
<< "streamChunkSlice " << streamChunkSlice.toString()
<< " not found when handling CHUNK_FETCH_FAILURE. Might be outdated already, ignored.";
found = false;
return MsgPromiseHolder{};
}
auto result = std::move(search->second);
registry.erase(streamChunkSlice);
return std::move(result);
});
std::string errorMsg = fmt::format(
"fetchChunk failed, streamChunkSlice: {}, errorMsg: {}",
streamChunkSlice.toString(),
failure->errorMsg());
LOG(ERROR) << errorMsg;
if (found) {
holder.msgPromise.setException(
folly::exception_wrapper(std::exception()));
}
return;
}
default: {
LOG(ERROR) << "unsupported msg for dispatcher";
}
}
}

folly::Future<std::unique_ptr<Message>> MessageDispatcher::operator()(
std::unique_ptr<Message> toSendMsg) {
CELEBORN_CHECK(!closed_);
CELEBORN_CHECK(toSendMsg->type() == Message::RPC_REQUEST);
RpcRequest* request = reinterpret_cast<RpcRequest*>(toSendMsg.get());
auto f = requestIdRegistry_.withLock(
[&](auto& registry) -> folly::Future<std::unique_ptr<Message>> {
auto& holder = registry[request->requestId()];
holder.requestTime = std::chrono::system_clock::now();
auto& p = holder.msgPromise;
p.setInterruptHandler([requestId = request->requestId(),
this](const folly::exception_wrapper&) {
this->requestIdRegistry_.lock()->erase(requestId);
LOG(WARNING) << "rpc request interrupted, requestId: " << requestId;
});
return p.getFuture();
});

this->pipeline_->write(std::move(toSendMsg));
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I have a question here, does this writing have the semantic of flush?

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The message would be transferred through the pipeline immediately, and there is no interface related to flush in Pipeline or OutboundLink (the component layers when sending out a message), so we could safely assume that this write() interface already has flushing semantic though there is no implementation guarantee.


CELEBORN_CHECK(!closed_);
return f;
}

folly::Future<std::unique_ptr<Message>>
MessageDispatcher::sendFetchChunkRequest(
const protocol::StreamChunkSlice& streamChunkSlice,
std::unique_ptr<Message> toSendMsg) {
CELEBORN_CHECK(!closed_);
CELEBORN_CHECK(toSendMsg->type() == Message::RPC_REQUEST);
auto f = streamChunkSliceRegistry_.withLock([&](auto& registry) {
auto& holder = registry[streamChunkSlice];
holder.requestTime = std::chrono::system_clock::now();
auto& p = holder.msgPromise;
p.setInterruptHandler(
[streamChunkSlice, this](const folly::exception_wrapper&) {
LOG(WARNING) << "fetchChunk request interrupted, "
"streamChunkSlice: "
<< streamChunkSlice.toString();
this->streamChunkSliceRegistry_.lock()->erase(streamChunkSlice);
});
return p.getFuture();
});
this->pipeline_->write(std::move(toSendMsg));
CELEBORN_CHECK(!closed_);
return f;
}

void MessageDispatcher::sendRpcRequestWithoutResponse(
std::unique_ptr<Message> toSendMsg) {
CELEBORN_CHECK(toSendMsg->type() == Message::RPC_REQUEST);
this->pipeline_->write(std::move(toSendMsg));
}

void MessageDispatcher::readEOF(Context* ctx) {
LOG(ERROR) << "readEOF, start to close client";
ctx->fireReadEOF();
close();
}

void MessageDispatcher::readException(
Context* ctx,
folly::exception_wrapper e) {
LOG(ERROR) << "readException: " << e.what() << " , start to close client";
ctx->fireReadException(std::move(e));
close();
}

void MessageDispatcher::transportActive(Context* ctx) {
// Typically do nothing.
ctx->fireTransportActive();
}

void MessageDispatcher::transportInactive(Context* ctx) {
LOG(ERROR) << "transportInactive, start to close client";
ctx->fireTransportInactive();
close();
}

folly::Future<folly::Unit> MessageDispatcher::writeException(
Context* ctx,
folly::exception_wrapper e) {
LOG(ERROR) << "writeException: " << e.what() << " , start to close client";
auto result = ctx->fireWriteException(std::move(e));
close();
return result;
}

folly::Future<folly::Unit> MessageDispatcher::close() {
if (!closed_) {
closed_ = true;
cleanup();
}
return ClientDispatcherBase::close();
}

folly::Future<folly::Unit> MessageDispatcher::close(Context* ctx) {
if (!closed_) {
closed_ = true;
cleanup();
}

return ClientDispatcherBase::close(ctx);
}

void MessageDispatcher::cleanup() {
LOG(WARNING) << "Cleaning up client!";
requestIdRegistry_.withLock([&](auto& registry) {
for (auto& [requestId, promiseHolder] : registry) {
auto errorMsg =
fmt::format("Client closed, cancel ongoing requestId {}", requestId);
LOG(WARNING) << errorMsg;
promiseHolder.msgPromise.setException(std::runtime_error(errorMsg));
}
registry.clear();
});
streamChunkSliceRegistry_.withLock([&](auto& registry) {
for (auto& [streamChunkSlice, promiseHolder] : registry) {
auto errorMsg = fmt::format(
"Client closed, cancel ongoing streamChunkSlice {}",
streamChunkSlice.toString());
LOG(WARNING) << errorMsg;
promiseHolder.msgPromise.setException(std::runtime_error(errorMsg));
}
registry.clear();
});
}
} // namespace network
} // namespace celeborn
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