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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/fnet/frt/invokable.h>
#include "proto_converter.h"
#include <atomic>
#include "search_protocol_metrics.h"
class FRT_Supervisor;
namespace search::engine {
class SearchServer;
class DocsumServer;
class MonitorServer;
/**
* Class adapting the internal search engine interfaces (SearchServer,
* DocsumServer, MonitorServer) to the external searchprotocol api
* (possibly compressed protobuf over frt rpc).
**/
class ProtoRpcAdapter : FRT_Invokable
{
public:
using ProtoSearchRequest = ProtoConverter::ProtoSearchRequest;
using ProtoSearchReply = ProtoConverter::ProtoSearchReply;
using ProtoDocsumRequest = ProtoConverter::ProtoDocsumRequest;
using ProtoDocsumReply = ProtoConverter::ProtoDocsumReply;
using ProtoMonitorRequest = ProtoConverter::ProtoMonitorRequest;
using ProtoMonitorReply = ProtoConverter::ProtoMonitorReply;
private:
SearchServer &_search_server;
DocsumServer &_docsum_server;
MonitorServer &_monitor_server;
std::atomic<bool> _online;
SearchProtocolMetrics _metrics;
public:
ProtoRpcAdapter(SearchServer &search_server,
DocsumServer &docsum_server,
MonitorServer &monitor_server,
FRT_Supervisor &orb);
SearchProtocolMetrics &metrics() { return _metrics; }
void set_online() { _online.store(true, std::memory_order_release); }
bool is_online() const { return _online.load(std::memory_order_acquire); }
void rpc_search(FRT_RPCRequest *req);
void rpc_getDocsums(FRT_RPCRequest *req);
void rpc_ping(FRT_RPCRequest *req);
// convenience functions used for testing
static void encode_search_request(const ProtoSearchRequest &src, FRT_RPCRequest &dst);
static bool decode_search_reply(FRT_RPCRequest &src, ProtoSearchReply &dst);
static void encode_docsum_request(const ProtoDocsumRequest &src, FRT_RPCRequest &dst);
static bool decode_docsum_reply(FRT_RPCRequest &src, ProtoDocsumReply &dst);
static void encode_monitor_request(const ProtoMonitorRequest &src, FRT_RPCRequest &dst);
static bool decode_monitor_reply(FRT_RPCRequest &src, ProtoMonitorReply &dst);
};
}
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