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// SPDX-License-Identifier: Apache-2.0
// SPDX-FileCopyrightText: Copyright OpenBMC Authors
#pragma once
#include "filter_expr_parser_ast.hpp"
#include "filter_expr_printer.hpp"
#include "http_request.hpp"
#include "logging.hpp"
#include "registries/privilege_registry.hpp"
#include "server_sent_event.hpp"
#include "subscription.hpp"
#include <app.hpp>
#include <boost/url/param.hpp>
#include <boost/url/params_base.hpp>
#include <event_service_manager.hpp>
#include <format>
#include <memory>
#include <optional>
#include <string>
namespace redfish
{
inline void createSubscription(crow::sse_socket::Connection& conn,
const crow::Request& req)
{
EventServiceManager& manager = EventServiceManager::getInstance();
if ((manager.getNumberOfSubscriptions() >= maxNoOfSubscriptions) ||
manager.getNumberOfSSESubscriptions() >= maxNoOfSSESubscriptions)
{
BMCWEB_LOG_WARNING("Max SSE subscriptions reached");
conn.close("Max SSE subscriptions reached");
return;
}
std::optional<filter_ast::LogicalAnd> filter;
boost::urls::params_base::iterator filterIt =
req.url().params().find("$filter");
if (filterIt != req.url().params().end())
{
const boost::urls::param& filterParam = *filterIt;
filter = parseFilter(filterParam.value);
if (!filter)
{
conn.close(std::format("Bad $filter param: {}", filterParam.value));
return;
}
}
std::string lastEventId(req.getHeaderValue("Last-Event-Id"));
std::shared_ptr<Subscription> subValue =
std::make_shared<Subscription>(conn);
if (subValue->userSub == nullptr)
{
BMCWEB_LOG_ERROR("Subscription data is null");
conn.close("Internal Error");
return;
}
// GET on this URI means, Its SSE subscriptionType.
subValue->userSub->subscriptionType = redfish::subscriptionTypeSSE;
subValue->userSub->protocol = "Redfish";
subValue->userSub->retryPolicy = "TerminateAfterRetries";
subValue->userSub->eventFormatType = "Event";
std::string id = manager.addSSESubscription(subValue, lastEventId);
if (id.empty())
{
conn.close("Internal Error");
}
}
inline void deleteSubscription(crow::sse_socket::Connection& conn)
{
EventServiceManager::getInstance().deleteSseSubscription(conn);
}
inline void requestRoutesEventServiceSse(App& app)
{
// Note, this endpoint is given the same privilege level as creating a
// subscription, because functionally, that's the operation being done
BMCWEB_ROUTE(app, "/redfish/v1/EventService/SSE")
.privileges(redfish::privileges::postEventDestinationCollection)
.serverSentEvent()
.onopen(createSubscription)
.onclose(deleteSubscription);
}
} // namespace redfish
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