foundationdb/fdbrpc/SimExternalConnection.h

85 lines
3.4 KiB
C++

/*
* SimExternalConnection.h
*
* This source file is part of the FoundationDB open source project
*
* Copyright 2013-2022 Apple Inc. and the FoundationDB project authors
*
* 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.
*/
#ifndef FDBRPC_SIM_EXTERNAL_CONNECTION_H
#define FDBRPC_SIM_EXTERNAL_CONNECTION_H
#pragma once
#include "flow/FastRef.h"
#include "flow/network.h"
#include "flow/flow.h"
#include <boost/asio.hpp>
// MockDNS is a class maintaining a <hostname, vector<NetworkAddress>> mapping, mocking a DNS in simulation.
class MockDNS {
public:
MockDNS() {}
explicit MockDNS(const std::map<std::string, std::vector<NetworkAddress>>& mockDNS)
: hostnameToAddresses(mockDNS) {}
bool findMockTCPEndpoint(const std::string& host, const std::string& service);
void addMockTCPEndpoint(const std::string& host,
const std::string& service,
const std::vector<NetworkAddress>& addresses);
void updateMockTCPEndpoint(const std::string& host,
const std::string& service,
const std::vector<NetworkAddress>& addresses);
void removeMockTCPEndpoint(const std::string& host, const std::string& service);
void clearMockTCPEndpoints();
std::vector<NetworkAddress> getTCPEndpoint(const std::string& host, const std::string& service);
void operator=(MockDNS const& rhs) { hostnameToAddresses = rhs.hostnameToAddresses; }
// Convert hostnameToAddresses to string. The format is:
// hostname1,host1Address1,host1Address2;hostname2,host2Address1,host2Address2...
std::string toString();
static MockDNS parseFromString(const std::string& s);
private:
std::map<std::string, std::vector<NetworkAddress>> hostnameToAddresses;
};
class SimExternalConnection final : public IConnection, public ReferenceCounted<SimExternalConnection> {
boost::asio::ip::tcp::socket socket;
SimExternalConnection(boost::asio::ip::tcp::socket&& socket);
UID dbgid;
std::deque<uint8_t> readBuffer;
AsyncTrigger onReadableTrigger;
friend class SimExternalConnectionImpl;
public:
void addref() override { return ReferenceCounted<SimExternalConnection>::addref(); }
void delref() override { return ReferenceCounted<SimExternalConnection>::delref(); }
void close() override;
Future<Void> acceptHandshake() override;
Future<Void> connectHandshake() override;
Future<Void> onWritable() override;
Future<Void> onReadable() override;
int read(uint8_t* begin, uint8_t* end) override;
int write(SendBuffer const* buffer, int limit) override;
NetworkAddress getPeerAddress() const override;
UID getDebugID() const override;
static Future<std::vector<NetworkAddress>> resolveTCPEndpoint(const std::string& host, const std::string& service);
static std::vector<NetworkAddress> resolveTCPEndpointBlocking(const std::string& host, const std::string& service);
static Future<Reference<IConnection>> connect(NetworkAddress toAddr);
};
#endif