| // 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 "kudu/rpc/rpc_controller.h" |
| |
| #include <memory> |
| #include <mutex> |
| #include <ostream> |
| #include <utility> |
| |
| #include <glog/logging.h> |
| |
| #include "kudu/gutil/strings/substitute.h" |
| #include "kudu/rpc/messenger.h" |
| #include "kudu/rpc/outbound_call.h" |
| #include "kudu/rpc/rpc_header.pb.h" |
| #include "kudu/rpc/rpc_sidecar.h" |
| #include "kudu/rpc/transfer.h" |
| |
| using std::unique_ptr; |
| using strings::Substitute; |
| namespace kudu { |
| |
| namespace rpc { |
| |
| RpcController::RpcController() |
| : credentials_policy_(CredentialsPolicy::ANY_CREDENTIALS), messenger_(nullptr) { |
| DVLOG(4) << "RpcController " << this << " constructed"; |
| } |
| |
| RpcController::~RpcController() { |
| DVLOG(4) << "RpcController " << this << " destroyed"; |
| } |
| |
| void RpcController::Swap(RpcController* other) { |
| // Cannot swap RPC controllers while they are in-flight. |
| if (call_) { |
| CHECK(finished()); |
| } |
| if (other->call_) { |
| CHECK(other->finished()); |
| } |
| |
| std::swap(outbound_sidecars_, other->outbound_sidecars_); |
| std::swap(outbound_sidecars_total_bytes_, other->outbound_sidecars_total_bytes_); |
| std::swap(timeout_, other->timeout_); |
| std::swap(credentials_policy_, other->credentials_policy_); |
| std::swap(call_, other->call_); |
| } |
| |
| void RpcController::Reset() { |
| std::lock_guard<simple_spinlock> l(lock_); |
| if (call_) { |
| CHECK(finished()); |
| } |
| call_.reset(); |
| required_server_features_.clear(); |
| credentials_policy_ = CredentialsPolicy::ANY_CREDENTIALS; |
| messenger_ = nullptr; |
| outbound_sidecars_total_bytes_ = 0; |
| } |
| |
| bool RpcController::finished() const { |
| if (call_) { |
| return call_->IsFinished(); |
| } |
| return false; |
| } |
| |
| bool RpcController::negotiation_failed() const { |
| if (call_) { |
| DCHECK(finished()); |
| return call_->IsNegotiationError(); |
| } |
| return false; |
| } |
| |
| Status RpcController::status() const { |
| if (call_) { |
| return call_->status(); |
| } |
| return Status::OK(); |
| } |
| |
| const ErrorStatusPB* RpcController::error_response() const { |
| if (call_) { |
| return call_->error_pb(); |
| } |
| return nullptr; |
| } |
| |
| int32_t RpcController::call_id() const { |
| return call_->call_response_->call_id(); |
| } |
| |
| Status RpcController::GetInboundSidecar(int idx, Slice* sidecar) const { |
| return call_->call_response_->GetSidecar(idx, sidecar); |
| } |
| |
| void RpcController::set_timeout(const MonoDelta& timeout) { |
| std::lock_guard<simple_spinlock> l(lock_); |
| DCHECK(!call_ || call_->state() == OutboundCall::READY); |
| timeout_ = timeout; |
| } |
| |
| void RpcController::set_deadline(const MonoTime& deadline) { |
| set_timeout(deadline - MonoTime::Now()); |
| } |
| |
| void RpcController::SetRequestIdPB(std::unique_ptr<RequestIdPB> request_id) { |
| request_id_ = std::move(request_id); |
| } |
| |
| bool RpcController::has_request_id() const { |
| return request_id_ != nullptr; |
| } |
| |
| const RequestIdPB& RpcController::request_id() const { |
| DCHECK(has_request_id()); |
| return *request_id_; |
| } |
| |
| void RpcController::RequireServerFeature(uint32_t feature) { |
| DCHECK(!call_ || call_->state() == OutboundCall::READY); |
| required_server_features_.insert(feature); |
| } |
| |
| MonoDelta RpcController::timeout() const { |
| std::lock_guard<simple_spinlock> l(lock_); |
| return timeout_; |
| } |
| |
| Status RpcController::AddOutboundSidecar(unique_ptr<RpcSidecar> car, int* idx) { |
| if (outbound_sidecars_.size() >= TransferLimits::kMaxSidecars) { |
| return Status::RuntimeError("All available sidecars already used"); |
| } |
| int64_t sidecar_bytes = car->TotalSize(); |
| if (outbound_sidecars_total_bytes_ > |
| TransferLimits::kMaxTotalSidecarBytes - sidecar_bytes) { |
| return Status::RuntimeError(Substitute("Total size of sidecars $0 would exceed limit $1", |
| static_cast<int64_t>(outbound_sidecars_total_bytes_) + sidecar_bytes, |
| TransferLimits::kMaxTotalSidecarBytes)); |
| } |
| |
| outbound_sidecars_.emplace_back(std::move(car)); |
| outbound_sidecars_total_bytes_ += sidecar_bytes; |
| DCHECK_GE(outbound_sidecars_total_bytes_, 0); |
| *idx = outbound_sidecars_.size() - 1; |
| return Status::OK(); |
| } |
| |
| void RpcController::SetRequestParam(const google::protobuf::Message& req) { |
| DCHECK(call_ != nullptr); |
| call_->SetRequestPayload(req, std::move(outbound_sidecars_)); |
| } |
| |
| void RpcController::FreeOutboundSidecars() { |
| outbound_sidecars_total_bytes_ = 0; |
| call_->FreeSidecars(); |
| } |
| |
| std::vector<unique_ptr<RpcSidecar>> RpcController::ReleaseOutboundSidecars() { |
| outbound_sidecars_total_bytes_ = 0; |
| return std::move(outbound_sidecars_); |
| } |
| |
| unique_ptr<RequestPayload> RpcController::ReleaseRequestPayload() { |
| return DCHECK_NOTNULL(call_)->ReleaseRequestPayload(); |
| } |
| |
| void RpcController::Cancel() { |
| DCHECK(call_); |
| DCHECK(messenger_); |
| messenger_->QueueCancellation(call_); |
| } |
| |
| } // namespace rpc |
| } // namespace kudu |