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/*
* Copyright (c) 2020 One Identity
* Copyright (c) 2020 Laszlo Budai <laszlo.budai@outlook.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.
*
*/
#include "instant_ack_tracker.h"
#include "ack_tracker.h"
#include "bookmark.h"
#include "syslog-ng.h"
typedef struct _InstantAckRecord
{
AckRecord super;
void *padding;
} InstantAckRecord;
typedef struct _InstantAckTracker
{
AckTracker super;
InstantAckRecord *pending_ack_record;
} InstantAckTracker;
static Bookmark *
_request_bookmark(AckTracker *s)
{
InstantAckTracker *self = (InstantAckTracker *)s;
if (!self->pending_ack_record)
self->pending_ack_record = g_new0(InstantAckRecord, 1);
return &(self->pending_ack_record->super.bookmark);
}
static void
_track_msg(AckTracker *s, LogMessage *msg)
{
InstantAckTracker *self = (InstantAckTracker *)s;
log_pipe_ref((LogPipe *)self->super.source);
self->pending_ack_record->super.bookmark.persist_state = s->source->super.cfg->state;
self->pending_ack_record->super.tracker = s;
msg->ack_record = (AckRecord *) self->pending_ack_record;
self->pending_ack_record = NULL;
}
static void
_save_bookmark(LogMessage *msg)
{
bookmark_save(&msg->ack_record->bookmark);
}
static void
_ack_record_free(AckRecord *s)
{
bookmark_destroy(&s->bookmark);
g_free(s);
}
static void
_manage_msg_ack(AckTracker *s, LogMessage *msg, AckType ack_type)
{
InstantAckTracker *self = (InstantAckTracker *)s;
_save_bookmark(msg);
_ack_record_free(msg->ack_record);
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
_free(AckTracker *s)
{
InstantAckTracker *self = (InstantAckTracker *)s;
if (self->pending_ack_record)
g_free(self->pending_ack_record);
g_free(self);
}
static void
_setup_callbacks(InstantAckTracker *self)
{
self->super.request_bookmark = _request_bookmark;
self->super.track_msg = _track_msg;
self->super.manage_msg_ack = _manage_msg_ack;
self->super.free_fn = _free;
}
static void
_init_instance(InstantAckTracker *self, LogSource *source)
{
self->super.source = source;
source->ack_tracker = (AckTracker *)self;
self->pending_ack_record = NULL;
_setup_callbacks(self);
}
AckTracker *
instant_ack_tracker_new(LogSource *source)
{
InstantAckTracker *self = (InstantAckTracker *)g_new0(InstantAckTracker, 1);
_init_instance(self, source);
return (AckTracker *)self;
}
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