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// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
#include <zenhttp/httpserver.h>
#include <zenhttp/httpstats.h>
#include <zenhttp/httpstatus.h>
#include <zenhttp/websocket.h>
#include <zentelemetry/stats.h>
ZEN_THIRD_PARTY_INCLUDES_START
#include <asio/io_context.hpp>
#include <asio/steady_timer.hpp>
ZEN_THIRD_PARTY_INCLUDES_END
namespace zen {
class SessionsService;
class HttpSessionsService final : public HttpService, public IHttpStatusProvider, public IHttpStatsProvider, public IWebSocketHandler
{
public:
HttpSessionsService(HttpStatusService& StatusService,
HttpStatsService& StatsService,
SessionsService& Sessions,
asio::io_context& IoContext);
virtual ~HttpSessionsService();
virtual const char* BaseUri() const override;
virtual void HandleRequest(HttpServerRequest& Request) override;
virtual CbObject CollectStats() override;
virtual void HandleStatsRequest(HttpServerRequest& Request) override;
virtual void HandleStatusRequest(HttpServerRequest& Request) override;
void SetSelfSessionId(const Oid& Id) { m_SelfSessionId = Id; }
// IWebSocketHandler
void OnWebSocketOpen(Ref<WebSocketConnection> Connection) override;
void OnWebSocketMessage(WebSocketConnection& Conn, const WebSocketMessage& Msg) override;
void OnWebSocketClose(WebSocketConnection& Conn, uint16_t Code, std::string_view Reason) override;
private:
struct SessionsStats
{
std::atomic_uint64_t SessionReadCount{};
std::atomic_uint64_t SessionWriteCount{};
std::atomic_uint64_t SessionDeleteCount{};
std::atomic_uint64_t SessionListCount{};
std::atomic_uint64_t RequestCount{};
std::atomic_uint64_t BadRequestCount{};
};
inline LoggerRef Log() { return m_Log; }
LoggerRef m_Log;
void Initialize();
void ListSessionsRequest(HttpRouterRequest& Req);
void SessionRequest(HttpRouterRequest& Req);
void SessionLogRequest(HttpRouterRequest& Req);
HttpStatusService& m_StatusService;
HttpStatsService& m_StatsService;
HttpRequestRouter m_Router;
SessionsService& m_Sessions;
SessionsStats m_SessionsStats;
metrics::OperationTiming m_HttpRequests;
// WebSocket push
RwLock m_WsConnectionsLock;
std::vector<Ref<WebSocketConnection>> m_WsConnections;
asio::steady_timer m_PushTimer;
void BroadcastSessions();
void EnqueuePushTimer();
Oid m_SelfSessionId = Oid::Zero;
CbObject BuildSessionListResponse();
};
} // namespace zen
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