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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "client_common.h"
#include <vespa/searchlib/common/serialnum.h>
#include <vespa/vespalib/util/buffer.h>
#include <vespa/vespalib/stllike/string.h>
class FRT_RPCRequest;
namespace search::transactionlog::client {
class TransLogClient;
class SessionKey
{
public:
SessionKey(const vespalib::string & domain, int sessionId);
~SessionKey();
bool operator < (const SessionKey & b) const { return cmp(b) < 0; }
private:
int cmp(const SessionKey & b) const;
vespalib::string _domain;
int _sessionId;
};
class Session
{
public:
Session(const vespalib::string & domain, TransLogClient & tlc);
virtual ~Session();
/// You can commit data of any registered type to any channel.
bool commit(const vespalib::ConstBufferRef & packet);
/// Will erase all entries prior to <to>
bool erase(const SerialNum & to);
bool status(SerialNum & b, SerialNum & e, size_t & count);
bool sync(const SerialNum &syncTo, SerialNum &syncedTo);
virtual RPC::Result visit(const Packet & ) { return RPC::OK; }
virtual void eof() { }
bool close();
void clear();
const vespalib::string & getDomain() const { return _domain; }
const TransLogClient & getTLC() const { return _tlc; }
protected:
bool init(FRT_RPCRequest * req);
bool run();
TransLogClient & _tlc;
vespalib::string _domain;
int _sessionId;
};
/// Here you connect to the incomming data getting everything from <from>
class Visitor : public Session
{
public:
Visitor(const vespalib::string & domain, TransLogClient & tlc, Callback & callBack);
bool visit(const SerialNum & from, const SerialNum & to);
virtual ~Visitor() override;
RPC::Result visit(const Packet & packet) override { return _callback.receive(packet); }
void eof() override { _callback.eof(); }
private:
Callback & _callback;
};
}
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