text: /*
   * Copyright (c) 2002-2014 Balabit
   * Copyright (c) 2014 Laszlo Budai
   *
   * 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.
   *
   */
  
  #include "ack_tracker.h"
  #include "bookmark.h"
  #include "syslog-ng.h"
  
  typedef struct _EarlyAckRecord
  {
    AckRecord super;
    void* padding;
    /* bookmark contains a binary container which has to be aligned */
    Bookmark bookmark;
  } EarlyAckRecord;
  
  typedef struct _EarlyAckTracker
  {
    AckTracker super;
  
    EarlyAckRecord ack_record_storage;
  } EarlyAckTracker;
  
  static Bookmark *
  early_ack_tracker_request_bookmark(AckTracker *s)
  {
    EarlyAckTracker *self = (EarlyAckTracker *)s;
    return &(self->ack_record_storage.bookmark);
  }
  
  static void
  early_ack_tracker_track_msg(AckTracker *s, LogMessage *msg)
  {
    EarlyAckTracker *self = (EarlyAckTracker *)s;
    log_pipe_ref((LogPipe *)self->super.source);
    msg->ack_record = (AckRecord *)(&self->ack_record_storage);
  }
  
  static void
  early_ack_tracker_manage_msg_ack(AckTracker *s, LogMessage *msg, AckType ack_type)
  {
    EarlyAckTracker *self = (EarlyAckTracker *)s;
  
    if (ack_type == AT_SUSPENDED)
      log_source_flow_control_suspend(self->super.source);
    else
      log_source_flow_control_adjust(self->super.source, 1);
  
    log_msg_unref(msg);
    log_pipe_unref((LogPipe *)self->super.source);
  }
  
  static void
  early_ack_tracker_init_instance(EarlyAckTracker *self, LogSource *source)
  {
    self->super.late = FALSE;
    self->super.source = source;
    source->ack_tracker = (AckTracker *)self;
    self->super.request_bookmark = early_ack_tracker_request_bookmark;
    self->super.track_msg = early_ack_tracker_track_msg;
    self->super.manage_msg_ack = early_ack_tracker_manage_msg_ack;
    self->ack_record_storage.super.tracker = (AckTracker *)self;
  }
  
  AckTracker*
  early_ack_tracker_new(LogSource *source)
  {
    EarlyAckTracker *self = (EarlyAckTracker *)g_new0(EarlyAckTracker, 1);
  
    early_ack_tracker_init_instance(self, source);
  
    return (AckTracker *)self;
  }
  
  void
  early_ack_tracker_free(AckTracker *s)
  {
    EarlyAckTracker *self = (EarlyAckTracker *)s;
  
    g_free(self);
  }
  