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/*
* Copyright (c) 2018 Balabit
* Copyright (c) 2018 László Várady <laszlo.varady@balabit.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation, or (at your option) any later version.
*
* 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 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 "msg-generator-source.h"
#include "logsource.h"
#include "logpipe.h"
#include "logmsg/logmsg.h"
#include "template/templates.h"
#include "timeutils/misc.h"
#include "ack-tracker/ack_tracker_factory.h"
#include <iv.h>
struct MsgGeneratorSource
{
LogSource super;
MsgGeneratorSourceOptions *options;
struct iv_timer timer;
gint num;
};
static void
_stop_timer(MsgGeneratorSource *self)
{
if (iv_timer_registered(&self->timer))
iv_timer_unregister(&self->timer);
}
static void
_start_timer(MsgGeneratorSource *self)
{
iv_validate_now();
self->timer.expires = iv_now;
timespec_add_msec(&self->timer.expires, self->options->freq);
iv_timer_register(&self->timer);
}
static void
_start_timer_immediately(MsgGeneratorSource *self)
{
iv_validate_now();
self->timer.expires = iv_now;
iv_timer_register(&self->timer);
}
static gboolean
_init(LogPipe *s)
{
MsgGeneratorSource *self = (MsgGeneratorSource *) s;
if (!log_source_init(s))
return FALSE;
_start_timer_immediately(self);
return TRUE;
}
static gboolean
_deinit(LogPipe *s)
{
MsgGeneratorSource *self = (MsgGeneratorSource *) s;
_stop_timer(self);
return log_source_deinit(s);
}
static void
_free(LogPipe *s)
{
log_source_free(s);
}
static void
_add_name_value(gpointer key, gpointer value, gpointer data)
{
gchar *name = (gchar *) key;
LogTemplate *val = (LogTemplate *) value;
LogMessage *msg = (LogMessage *) data;
LogMessageValueType type;
GString *msg_body = g_string_sized_new(128);
log_template_format_value_and_type(val, msg, &DEFAULT_TEMPLATE_EVAL_OPTIONS, msg_body, &type);
log_msg_set_value_by_name_with_type(msg, name, msg_body->str, msg_body->len, type);
g_string_free(msg_body, TRUE);
}
static void
_send_generated_message(MsgGeneratorSource *self)
{
if (!log_source_free_to_send(&self->super))
return;
LogMessage *msg = log_msg_new_empty();
g_hash_table_foreach(self->options->name_value, _add_name_value, msg);
log_msg_set_value(msg, LM_V_MESSAGE, "-- Generated message. --", -1);
if (self->options->template)
{
GString *msg_body = g_string_sized_new(128);
log_template_format(self->options->template, msg, &DEFAULT_TEMPLATE_EVAL_OPTIONS, msg_body);
log_msg_set_value(msg, LM_V_MESSAGE, msg_body->str, msg_body->len);
g_string_free(msg_body, TRUE);
}
msg_debug("Incoming generated message", evt_tag_str("msg", log_msg_get_value(msg, LM_V_MESSAGE, NULL)));
log_source_post(&self->super, msg);
}
static void
_timer_expired(void *cookie)
{
MsgGeneratorSource *self = (MsgGeneratorSource *) cookie;
_send_generated_message(self);
if (self->options->max_num > 0)
{
self->num++;
if (self->num < self->options->max_num)
{
_start_timer(self);
}
}
else
{
_start_timer(self);
}
}
gboolean
msg_generator_source_init(MsgGeneratorSource *self)
{
return log_pipe_init(&self->super.super);
}
gboolean
msg_generator_source_deinit(MsgGeneratorSource *self)
{
return log_pipe_deinit(&self->super.super);
}
void
msg_generator_source_free(MsgGeneratorSource *self)
{
log_pipe_unref(&self->super.super);
}
void
msg_generator_source_set_options(MsgGeneratorSource *self, MsgGeneratorSourceOptions *options,
const gchar *stats_id, StatsClusterKeyBuilder *kb, gboolean threaded,
gboolean pos_tracked, LogExprNode *expr_node)
{
log_source_set_options(&self->super, &options->super, stats_id, kb, threaded, expr_node);
AckTrackerFactory *factory = pos_tracked ? consecutive_ack_tracker_factory_new() :
instant_ack_tracker_bookmarkless_factory_new();
log_source_set_ack_tracker_factory(&self->super, factory);
self->options = options;
}
MsgGeneratorSource *
msg_generator_source_new(GlobalConfig *cfg)
{
MsgGeneratorSource *self = g_new0(MsgGeneratorSource, 1);
log_source_init_instance(&self->super, cfg);
IV_TIMER_INIT(&self->timer);
self->timer.cookie = self;
self->timer.handler = _timer_expired;
self->super.super.init = _init;
self->super.super.deinit = _deinit;
self->super.super.free_fn = _free;
return self;
}
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