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a10351f38ddf50af2b01ed071c04cda52d6069ed
o3de/Gems/GameLift/Code/Source/Session/GameLiftClientSession.cpp
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alexpete a10351f38d Initial commit
2021-03-08 14:30:57 -08:00

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/*
* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
* its licensors.
*
* For complete copyright and license terms please see the LICENSE at the root of this
* distribution (the "License"). All use of this software is governed by the License,
* or, if provided, by the license below or the license accompanying this file. Do not
* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*
*/
#if defined(BUILD_GAMELIFT_CLIENT)
#include <AzCore/PlatformIncl.h>
#include <GameLift/Session/GameLiftClientSession.h>
#include <GameLift/Session/GameLiftClientService.h>
#include <GameLift/Session/GameLiftSearch.h>
#include <GridMate/Online/UserServiceTypes.h>
#include <GridMate/Replica/Replica.h>
#include <GridMate/Replica/ReplicaFunctions.h>
#include <GridMate/Carrier/SocketDriver.h>
#include <GridMate/Carrier/Utils.h>
#include <AzCore/Math/Crc.h>
#include <AzCore/Math/Uuid.h>
#include <aws/core/utils/Outcome.h>
// To avoid the warning below
// Semaphore.h(50): warning C4251: 'Aws::Utils::Threading::Semaphore::m_mutex': class 'std::mutex' needs to have dll-interface to be used by clients of class 'Aws::Utils::Threading::Semaphore'
AZ_PUSH_DISABLE_WARNING(4251, "-Wunknown-warning-option")
#include <aws/gamelift/model/DescribeGameSessionsRequest.h>
#include <aws/gamelift/model/CreatePlayerSessionRequest.h>
#include <aws/gamelift/model/CreatePlayerSessionResult.h>
AZ_POP_DISABLE_WARNING
namespace
{
const int k_minGameSessionRetryInterval = 100; //< 100 msec minimum interval for retrying gamesession status
const int k_maxGameSessionRetries = 8; //< max 8 retries -> ~50 sec
const int k_gameSessionRetryBase = 200; //< base for exponential retries (200, 400, 800, 1600, 3200 msec, etc...)
}
namespace GridMate
{
class GameLiftMember;
//-----------------------------------------------------------------------------
// GameLiftSessionReplica
//-----------------------------------------------------------------------------
class GameLiftSessionReplica
: public Internal::GridSessionReplica
{
public:
class GameLiftSessionReplicaDesc
: public ReplicaChunkDescriptor
{
public:
GameLiftSessionReplicaDesc()
: ReplicaChunkDescriptor(GameLiftSessionReplica::GetChunkName(), sizeof(GameLiftSessionReplica))
{
}
ReplicaChunkBase* CreateFromStream(UnmarshalContext& mc) override
{
GameLiftClientSession* session = static_cast<GameLiftClientSession*>(static_cast<GridSession*>(mc.m_rm->GetUserContext(AZ_CRC("GridSession", 0x099df4e6))));
AZ_Assert(session, "We need to have a valid session!");
return session->OnSessionReplicaArrived();
}
void DiscardCtorStream(UnmarshalContext&) override {}
void DeleteReplicaChunk(ReplicaChunkBase* chunkInstance) override { delete chunkInstance; }
void MarshalCtorData(ReplicaChunkBase*, WriteBuffer&) override {}
};
GM_CLASS_ALLOCATOR(GameLiftSessionReplica);
static const char* GetChunkName()
{
return "GridMate::GameLiftSessionReplica";
}
GameLiftSessionReplica(GameLiftClientSession* session)
: GridSessionReplica(session)
{
}
};
//-----------------------------------------------------------------------------
// Maintain size and alignment same for corresponding classes in GameLiftServerSession
// GameLiftMemberId -> GameLiftServerMemeberId
// GameLiftMemeber -> GameLiftServerMember
//-----------------------------------------------------------------------------
// GameLiftMemberID
//-----------------------------------------------------------------------------
class GameLiftMemberID
: public MemberID
{
public:
//-----------------------------------------------------------------------------
// Marshaler
//-----------------------------------------------------------------------------
class Marshaler
{
public:
void Marshal(WriteBuffer& wb, const GameLiftMemberID& id) const
{
wb.Write(id.m_id);
}
void Unmarshal(GameLiftMemberID& id, ReadBuffer& rb) const
{
rb.Read(id.m_id);
}
};
//-----------------------------------------------------------------------------
GameLiftMemberID()
: m_id(0)
{
}
explicit GameLiftMemberID(AZ::u32 memberId)
: m_id(memberId)
{
AZ_Assert(m_id != 0, "Invalid member id");
}
string ToString() const override { return string::format("%08X", m_id); }
string ToAddress() const override { return ToString(); }
MemberIDCompact Compact() const override { return m_id; }
bool IsValid() const override { return m_id != 0; }
private:
AZ::u32 m_id;
string m_address;
};
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// GameLiftMemberInfoCtorContext
//-----------------------------------------------------------------------------
struct GameLiftMemberInfoCtorContext
: public CtorContextBase
{
CtorDataSet<GameLiftMemberID, GameLiftMemberID::Marshaler> m_memberId;
CtorDataSet<RemotePeerMode> m_peerMode;
CtorDataSet<bool> m_isHost;
};
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// GameLiftMemberState
//-----------------------------------------------------------------------------
class GameLiftMemberState
: public Internal::GridMemberStateReplica
{
public:
GM_CLASS_ALLOCATOR(GameLiftMemberState);
static const char* GetChunkName() { return "GameLiftMemberState"; }
explicit GameLiftMemberState(GridMember* member = nullptr)
: GridMemberStateReplica(member)
{
}
};
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// GameLiftMember
//-----------------------------------------------------------------------------
class GameLiftMember
: public GridMember
{
friend class GameLiftClientSession;
public:
class GameLiftMemberDesc
: public ReplicaChunkDescriptor
{
public:
GameLiftMemberDesc()
: ReplicaChunkDescriptor(GameLiftMember::GetChunkName(), sizeof(GameLiftMember))
{
}
ReplicaChunkBase* CreateFromStream(UnmarshalContext& mc) override
{
GameLiftMemberInfoCtorContext ctorContext;
ctorContext.Unmarshal(*mc.m_iBuf);
GameLiftClientSession* session = static_cast<GameLiftClientSession*>(static_cast<GridSession*>(mc.m_rm->GetUserContext(AZ_CRC("GridSession"))));
AZ_Assert(session, "Invalid session");
GameLiftMemberID memberId = ctorContext.m_memberId.Get();
RemotePeerMode remotePeerMode = ctorContext.m_peerMode.Get();
bool isMemberHost = ctorContext.m_isHost.Get();
GameLiftMember* member = nullptr;
if (memberId != session->GetMyMember()->GetId())
{
// Put the appscale id back into a buffer so it can be passed to CreateRemoteMember
WriteBufferDynamic memberIdBuf(EndianType::IgnoreEndian);
memberIdBuf.Write(memberId.Compact());
ReadBuffer rb(memberIdBuf.GetEndianType(), memberIdBuf.Get(), memberIdBuf.Size());
member = static_cast<GameLiftMember*>(session->CreateRemoteMember(memberId.ToAddress(), rb, remotePeerMode, isMemberHost ? mc.m_peer->GetConnectionId() : InvalidConnectionID));
}
else
{
member = static_cast<GameLiftMember*>(session->GetMyMember());
}
bool isAdded = session->AddMember(member);
AZ_Assert(isAdded, "Failed to add a member, there is something wrong with the member replicas!");
if (!isAdded)
{
member = nullptr;
AZ_TracePrintf("GameLift", "[CLIENT SESSION] Failed to add a member, there is something wrong with the member replicas, peerid %d", mc.m_peer ? mc.m_peer->GetId() : 0);
}
else
{
AZ_TracePrintf("GameLift", "[CLIENT SESSION] Added a member, peerid %d", mc.m_peer ? mc.m_peer->GetId() : 0);
}
return member;
}
void DiscardCtorStream(UnmarshalContext& mc) override
{
GameLiftMemberInfoCtorContext ctorContext;
ctorContext.Unmarshal(*mc.m_iBuf);
}
void DeleteReplicaChunk(ReplicaChunkBase* chunkInstance) override
{
if (!static_cast<GameLiftMember*>(chunkInstance)->IsLocal())
{
delete chunkInstance;
}
}
void MarshalCtorData(ReplicaChunkBase* chunkInstance, WriteBuffer& wb) override
{
GameLiftMember* member = static_cast<GameLiftMember*>(chunkInstance);
GameLiftMemberInfoCtorContext ctorContext;
ctorContext.m_memberId.Set(member->m_memberId);
ctorContext.m_peerMode.Set(member->m_peerMode.Get());
ctorContext.m_isHost.Set(member->IsHost());
ctorContext.Marshal(wb);
}
};
GM_CLASS_ALLOCATOR(GameLiftMember);
static const char* GetChunkName() { return "GridMate::GameLiftMember"; }
const PlayerId* GetPlayerId() const override
{
return nullptr;
}
const MemberID& GetId() const override
{
return m_memberId;
}
/// Remote member ctor.
GameLiftMember(ConnectionID connId, const GameLiftMemberID& memberId, GameLiftClientSession* session)
: GridMember(memberId.Compact())
, m_memberId(memberId)
{
m_session = session;
m_connectionId = connId;
}
/// Local member ctor.
GameLiftMember(const GameLiftMemberID& memberId, GameLiftClientSession* session)
: GridMember(memberId.Compact())
, m_memberId(memberId)
{
m_session = session;
m_clientState = CreateReplicaChunk<GameLiftMemberState>(this);
m_clientState->m_name.Set(memberId.ToString());
m_clientStateReplica = Replica::CreateReplica(memberId.ToString().c_str());
m_clientStateReplica->AttachReplicaChunk(m_clientState);
}
void OnReplicaDeactivate(const ReplicaContext& rc) override
{
GridMember::OnReplicaDeactivate(rc);
AZ_TracePrintf("GameLift", "[CLIENT SESSION] Deactivating a replica, peerid %d", rc.m_peer ? rc.m_peer->GetId() : 0);
}
using GridMember::SetHost;
GameLiftMemberID m_memberId;
string m_playerSessionId;
};
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// GameLiftClientSession
//-----------------------------------------------------------------------------
GameLiftClientSession::GameLiftClientSession(GameLiftClientService* service)
: GridSession(service)
, m_gameSessionRetryTimeout(0)
, m_numGameSessionRetryAttempts(0)
, m_clientService(service)
{
}
bool GameLiftClientSession::Initialize(const GameLiftSearchInfo& info, const JoinParams& params, const CarrierDesc& carrierDesc)
{
(void)params;
if (!GridSession::Initialize(carrierDesc))
{
return false;
}
m_state = CreateReplicaChunk<GameLiftSessionReplica>(this);
m_searchInfo = info;
m_sm.SetStateHandler(AZ_HSM_STATE_NAME(SS_GAMELIFT_INIT), AZ::HSM::StateHandler(this, &GameLiftClientSession::OnStateGameLiftInit), SS_NO_SESSION);
SetUpStateMachine();
// If player session id is already set then join existing player session.
if (!info.m_playerSessionId.empty())
{
m_playerSession.SetGameSessionId(m_searchInfo.m_sessionId.c_str());
m_playerSession.SetPlayerSessionId(m_searchInfo.m_playerSessionId.c_str());
m_playerSession.SetPort(m_searchInfo.m_port);
m_playerSession.SetIpAddress(m_searchInfo.m_ipAddress.c_str());
SetGameLiftLocalParams();
m_sessionId = m_searchInfo.m_sessionId;
RequestEvent(SE_MATCHMAKING_JOIN);
}
else
{
RequestEvent(SE_JOIN);
}
return true;
}
GridMember* GameLiftClientSession::CreateLocalMember(bool isHost, bool isInvited, RemotePeerMode peerMode)
{
(void)isInvited;
AZ_Assert(!isHost, "GameLiftClientSession can never run as host!");
AZ_Assert(!m_myMember, "We already have added a local member!");
string ip = Utils::GetMachineAddress(m_carrierDesc.m_familyType);
string address = SocketDriverCommon::IPPortToAddressString(ip.c_str(), m_carrier->GetPort());
string playerSessionId = m_playerSession.GetPlayerSessionId().c_str();
AZ_Assert(!playerSessionId.empty(), "GameLift clients must have a valid playerSessionId to connect to the server!");
GameLiftMemberID myId(AZ::Crc32(playerSessionId.c_str()));
GameLiftMember* member = CreateReplicaChunk<GameLiftMember>(myId, this);
member->SetHost(isHost);
member->m_peerMode.Set(peerMode);
return member;
}
GameLiftSessionReplica* GameLiftClientSession::OnSessionReplicaArrived()
{
AZ_TracePrintf("GameLift", "(%s - %s) has joined session: %s\n",
m_myMember->GetId().ToString().c_str(),
m_myMember->GetId().ToAddress().c_str(),
m_sessionId.c_str());
RequestEvent(GridSession::SE_JOINED);
return static_cast<GameLiftSessionReplica*>(m_state.get());
}
bool GameLiftClientSession::OnStateGameLiftInit(AZ::HSM& sm, const AZ::HSM::Event& e)
{
switch (e.id)
{
case SE_RECEIVED_GAMESESSION:
{
const Aws::GameLift::Model::DescribeGameSessionsResult* result = reinterpret_cast<const Aws::GameLift::Model::DescribeGameSessionsResult*>(e.userData);
if (result->GetGameSessions().size() != 1)
{
AZ_TracePrintf("GridMate", "Game session does not exist %s\n", m_searchInfo.m_sessionId.c_str());
RequestEvent(SE_DELETE);
return true;
}
const Aws::GameLift::Model::GameSession& gameSession = result->GetGameSessions().front();
if (gameSession.GetStatus() == Aws::GameLift::Model::GameSessionStatus::ACTIVE)
{
Aws::GameLift::Model::CreatePlayerSessionRequest request;
request.WithGameSessionId(m_searchInfo.m_sessionId.c_str()).WithPlayerId(m_clientService->GetPlayerId());
m_createPlayerSessionOutcomeCallable = m_clientService->GetClient()->CreatePlayerSessionCallable(request);
}
else if (gameSession.GetStatus() == Aws::GameLift::Model::GameSessionStatus::ACTIVATING && m_numGameSessionRetryAttempts < k_maxGameSessionRetries)
{
m_gameSessionRetryTimeout = k_minGameSessionRetryInterval + k_gameSessionRetryBase * (1 << m_numGameSessionRetryAttempts);
m_gameSessionRetryTimestamp = AZStd::chrono::system_clock::now();
++m_numGameSessionRetryAttempts;
}
else
{
AZ_TracePrintf("GridMate", "Failed to activate session %s\n", gameSession.GetGameSessionId().c_str());
sm.Transition(SS_NO_SESSION);
}
return true;
}
case SE_RECEIVED_PLAYERSESSION:
{
m_playerSession = *reinterpret_cast<const Aws::GameLift::Model::PlayerSession*>(e.userData);
SetGameLiftLocalParams();
m_sessionId = m_playerSession.GetGameSessionId().c_str();
sm.Transition(SS_CREATE);
return true;
}
case SE_CLIENT_FAILED:
{
sm.Transition(SS_NO_SESSION);
return true;
}
}
return false;
}
void GameLiftClientSession::SetGameLiftLocalParams()
{
const auto& clientEndpoint = m_clientService->GetEndpoint();
//To support GameLiftLocal on a remote server, convert the reported 127.0.0.1
// address to the configured GameLiftLocal endpoint address
if (m_clientService->UseGameLiftLocal() &&
m_playerSession.GetIpAddress().compare("127.0.0.1") == 0 &&
//Ignore actual loopback connections
clientEndpoint.find("localhost") == -1 &&
clientEndpoint.find("127.") != 0)
{
const auto portLocation = clientEndpoint.find(":");
if (portLocation != -1)
{
//Copy only the host name/address
m_playerSession.SetIpAddress(clientEndpoint.substr(0, portLocation).c_str());
}
else
{
m_playerSession.SetIpAddress(clientEndpoint.c_str());
}
}
}
bool GameLiftClientSession::OnStateStartup(AZ::HSM& sm, const AZ::HSM::Event& e)
{
switch (e.id)
{
case SE_JOIN:
{
sm.Transition(SS_GAMELIFT_INIT);
return true;
}
case SE_MATCHMAKING_JOIN:
{
sm.Transition(SS_CREATE);
return true;
}
}
return false;
}
bool GameLiftClientSession::OnStateCreate(AZ::HSM& sm, const AZ::HSM::Event& e)
{
bool isProcessed = GridSession::OnStateCreate(sm, e);
switch (e.id)
{
case AZ::HSM::EnterEventId:
{
AZ_Assert(m_carrier, "Carrier must be created!");
m_myMember = CreateLocalMember(false, false, Mode_Peer);
// setting player's session id for handshake
WriteBufferStatic<> wb(kSessionEndian);
string playerSessionId = m_playerSession.GetPlayerSessionId().c_str();
wb.Write(playerSessionId);
SetHandshakeUserData(wb.Get(), wb.Size());
Aws::String resolvedIp = m_playerSession.GetIpAddress();
if (!resolvedIp.empty())
{
m_hostAddress = SocketDriverCommon::IPPortToAddressString(resolvedIp.c_str(), m_playerSession.GetPort());
RequestEvent(SE_CREATED);
}
else
{
AZ_TracePrintf("GameLift", "Error retrieving ipAddress for player session.\n");
sm.Transition(SS_DELETE);
return true;
}
return true;
}
}
return isProcessed;
}
bool GameLiftClientSession::OnStateDelete(AZ::HSM& sm, const AZ::HSM::Event& e)
{
bool isProcessed = GridSession::OnStateDelete(sm, e);
switch (e.id)
{
case AZ::HSM::EnterEventId:
{
RequestEvent(SE_DELETED);
}
return true;
}
return isProcessed;
}
bool GameLiftClientSession::OnStateHostMigrateSession(AZ::HSM& sm, const AZ::HSM::Event& e)
{
(void)sm;
(void)e;
AZ_Assert(false, "Host migration is not supported for GameLift sessions.");
return false;
}
GridMember* GameLiftClientSession::CreateRemoteMember(const string& address, ReadBuffer& data, RemotePeerMode peerMode, ConnectionID connId)
{
(void)address;
AZ::u32 remoteId = 0;
if (data.Read(remoteId))
{
GameLiftMemberID memberId(remoteId);
GameLiftMember* member = CreateReplicaChunk<GameLiftMember>(connId, memberId, this);
member->m_peerMode.Set(peerMode);
return member;
}
else
{
return nullptr;
}
}
void GameLiftClientSession::Update()
{
if (m_gameSessionRetryTimeout >= 0)
{
if (AZStd::chrono::milliseconds(AZStd::chrono::system_clock::now() - m_gameSessionRetryTimestamp).count() >= m_gameSessionRetryTimeout)
{
Aws::GameLift::Model::DescribeGameSessionsRequest request;
request.SetGameSessionId(m_searchInfo.m_sessionId.c_str());
m_describeGameSessionsOutcomeCallable = m_clientService->GetClient()->DescribeGameSessionsCallable(request);
m_gameSessionRetryTimeout = -1;
}
}
if (m_describeGameSessionsOutcomeCallable.valid()
&& m_describeGameSessionsOutcomeCallable.wait_for(std::chrono::milliseconds(0)) == std::future_status::ready)
{
auto result = m_describeGameSessionsOutcomeCallable.get();
if (result.IsSuccess())
{
RequestEventData(SE_RECEIVED_GAMESESSION, result.GetResult());
}
else
{
AZ_TracePrintf("GameLift", "Failed to get game session: %s\n", result.GetError().GetMessage().c_str());
RequestEvent(SE_CLIENT_FAILED);
}
}
if (m_createPlayerSessionOutcomeCallable.valid()
&& m_createPlayerSessionOutcomeCallable.wait_for(std::chrono::milliseconds(0)) == std::future_status::ready)
{
auto result = m_createPlayerSessionOutcomeCallable.get();
if (result.IsSuccess())
{
RequestEventData(SE_RECEIVED_PLAYERSESSION, result.GetResult());
}
else
{
AZ_TracePrintf("GameLift", "Failed to entitle session: %s\n", result.GetError().GetMessage().c_str());
RequestEvent(SE_CLIENT_FAILED);
}
}
GridSession::Update();
}
void GameLiftClientSession::RegisterReplicaChunks()
{
ReplicaChunkDescriptorTable::Get().RegisterChunkType<GameLiftSessionReplica, GameLiftSessionReplica::GameLiftSessionReplicaDesc>();
ReplicaChunkDescriptorTable::Get().RegisterChunkType<GameLiftMember, GameLiftMember::GameLiftMemberDesc>();
ReplicaChunkDescriptorTable::Get().RegisterChunkType<GameLiftMemberState>();
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
} // namespace GridMate
#endif // BUILD_GAMELIFT_CLIENT
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