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/*
* This file is part of PowerDNS or dnsdist.
* Copyright -- PowerDNS.COM B.V. and its contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* In addition, for the avoidance of any doubt, permission is granted to
* link this program with OpenSSL and to (re)distribute the binaries
* produced as the result of such linking.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#pragma once
#include "config.h"
#include "remote_logger.hh"
#ifdef HAVE_FSTRM
#include <unordered_map>
#include <fstrm.h>
#include <fstrm/iothr.h>
#include <fstrm/unix_writer.h>
#ifdef HAVE_FSTRM_TCP_WRITER_INIT
#include <fstrm/tcp_writer.h>
#endif
class FrameStreamLogger : public RemoteLoggerInterface
{
public:
FrameStreamLogger(int family, std::string address, bool connect, const std::unordered_map<string, unsigned int>& options = std::unordered_map<string, unsigned int>());
FrameStreamLogger(const FrameStreamLogger&) = delete;
FrameStreamLogger(FrameStreamLogger&&) = delete;
FrameStreamLogger& operator=(const FrameStreamLogger&) = delete;
FrameStreamLogger& operator=(FrameStreamLogger&&) = delete;
~FrameStreamLogger() override;
[[nodiscard]] RemoteLoggerInterface::Result queueData(const std::string& data) override;
[[nodiscard]] std::string address() const override
{
return d_address;
}
[[nodiscard]] std::string name() const override
{
return "dnstap";
}
[[nodiscard]] std::string toString() override
{
return "FrameStreamLogger to " + d_address + " (" + std::to_string(d_framesSent) + " frames sent, " + std::to_string(d_queueFullDrops) + " dropped, " + std::to_string(d_permanentFailures) + " permanent failures)";
}
[[nodiscard]] RemoteLoggerInterface::Stats getStats() override
{
return Stats{.d_queued = d_framesSent,
.d_pipeFull = d_queueFullDrops,
.d_tooLarge = d_tooLargeCount,
.d_otherError = d_permanentFailures};
}
private:
const int d_family;
const std::string d_address;
struct fstrm_iothr_queue* d_ioqueue{nullptr};
struct fstrm_writer_options* d_fwopt{nullptr};
struct fstrm_unix_writer_options* d_uwopt{nullptr};
#ifdef HAVE_FSTRM_TCP_WRITER_INIT
struct fstrm_tcp_writer_options* d_twopt{nullptr};
#endif
struct fstrm_writer* d_writer{nullptr};
struct fstrm_iothr_options* d_iothropt{nullptr};
struct fstrm_iothr* d_iothr{nullptr};
std::atomic<uint64_t> d_framesSent{0};
std::atomic<uint64_t> d_queueFullDrops{0};
std::atomic<uint64_t> d_tooLargeCount{0};
std::atomic<uint64_t> d_permanentFailures{0};
void cleanup();
};
#else
class FrameStreamLogger : public RemoteLoggerInterface
{
FrameStreamLogger(const FrameStreamLogger&) = delete;
FrameStreamLogger(FrameStreamLogger&&) = delete;
FrameStreamLogger& operator=(const FrameStreamLogger&) = delete;
FrameStreamLogger& operator=(FrameStreamLogger&&) = delete;
};
#endif /* HAVE_FSTRM */
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