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/*
* 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;
log_source_flow_control_adjust(self->super.source, 1);
if (ack_type == AT_SUSPENDED)
log_source_flow_control_suspend(self->super.source);
log_msg_unref(msg);
log_pipe_unref((LogPipe *)self->super.source);
}
static void
early_ack_tracker_free(AckTracker *s)
{
EarlyAckTracker *self = (EarlyAckTracker *)s;
g_free(self);
}
static void
_setup_callbacks(EarlyAckTracker *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->super.free_fn = early_ack_tracker_free;
}
static void
early_ack_tracker_init_instance(EarlyAckTracker *self, LogSource *source)
{
self->super.source = source;
source->ack_tracker = (AckTracker *)self;
self->ack_record_storage.super.tracker = (AckTracker *)self;
_setup_callbacks(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;
}
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