logthrfetcherdrv.h

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/*
 * Copyright (c) 2018 Balabit
 * Copyright (c) 2018 László Várady <laszlo.varady@balabit.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * As an additional exemption you are allowed to compile & link against the
 * OpenSSL libraries as published by the OpenSSL project. See the file
 * COPYING for details.
 *
 */
 
#ifndef LOGTHRFETCHERDRV_H
#define LOGTHRFETCHERDRV_H
 
#include "syslog-ng.h"
#include "logthrsourcedrv.h"
#include "logmsg/logmsg.h"
#include "compat/time.h"
 
#include <iv.h>
#include <iv_event.h>
 
typedef struct _LogThreadedFetcherDriver LogThreadedFetcherDriver;
 
typedef enum
{
  THREADED_FETCH_ERROR,
  THREADED_FETCH_NOT_CONNECTED,
  THREADED_FETCH_SUCCESS,
  THREADED_FETCH_TRY_AGAIN,
  THREADED_FETCH_NO_DATA
} ThreadedFetchResult;
 
typedef struct _LogThreadedFetchResult
{
  ThreadedFetchResult result;
  LogMessage *msg;
} LogThreadedFetchResult;
 
struct _LogThreadedFetcherDriver
{
  LogThreadedSourceDriver super;
  time_t time_reopen;
  gint64 no_data_delay;
  struct iv_task fetch_task;
  struct iv_event wakeup_event;
  struct iv_event shutdown_event;
  struct iv_timer reconnect_timer;
  struct iv_timer no_data_timer;
  gboolean suspended;
  gboolean under_termination;
 
  void (*thread_init)(LogThreadedFetcherDriver *self);
  void (*thread_deinit)(LogThreadedFetcherDriver *self);
  gboolean (*connect)(LogThreadedFetcherDriver *self);
  void (*disconnect)(LogThreadedFetcherDriver *self);
  LogThreadedFetchResult (*fetch)(LogThreadedFetcherDriver *self);
 
  void (*request_exit)(LogThreadedFetcherDriver *self);
};
 
void log_threaded_fetcher_driver_init_instance(LogThreadedFetcherDriver *self, GlobalConfig *cfg);
gboolean log_threaded_fetcher_driver_init_method(LogPipe *s);
gboolean log_threaded_fetcher_driver_deinit_method(LogPipe *s);
void log_threaded_fetcher_driver_free_method(LogPipe *s);
 
void log_threaded_fetcher_driver_set_fetch_no_data_delay(LogDriver *self, gdouble no_data_delay);
void log_threaded_fetcher_driver_set_time_reopen(LogDriver *s, time_t time_reopen);
 
#endif