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/*
* Copyright (c) 2002-2013, 2015 Balabit
* Copyright (c) 1998-2013, 2015 Balázs Scheidler
*
* 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.
*
*/
#ifndef CORRELATION_STATEFUL_PARSER_H_INCLUDED
#define CORRELATION_STATEFUL_PARSER_H_INCLUDED 1
#include "parser/parser-expr.h"
typedef enum
{
LDBP_IM_PASSTHROUGH = 0,
LDBP_IM_INTERNAL = 1,
LDBP_IM_AGGREGATE_ONLY
} LogDBParserInjectMode;
typedef struct _StatefulParser
{
LogParser super;
LogDBParserInjectMode inject_mode;
} StatefulParser;
static inline gboolean
stateful_parser_init_method(LogPipe *s)
{
return log_parser_init_method(s);
}
static inline gboolean
stateful_parser_deinit_method(LogPipe *s)
{
return log_parser_deinit_method(s);
}
void stateful_parser_set_inject_mode(StatefulParser *self, LogDBParserInjectMode inject_mode);
void stateful_parser_clone_settings(StatefulParser *self, StatefulParser *cloned);
void stateful_parser_emit_synthetic(StatefulParser *self, LogMessage *msg);
void stateful_parser_emit_synthetic_list(StatefulParser *self, LogMessage **values, gsize len);
void stateful_parser_init_instance(StatefulParser *self, GlobalConfig *cfg);
void stateful_parser_free_method(LogPipe *s);
int stateful_parser_lookup_inject_mode(const gchar *inject_mode);
#define EXPECTED_NUMBER_OF_MESSAGES_EMITTED 32
/* This structure is to be held on the stack to accumulate messages to be
* emitted after a single correlation cycle. We store these messages
* temporarily in this struct (instead of sending them along on the log
* pipeline), so we can avoid posting them while our locks are held.
*
* Sending messages along the pipeline with locks held can cause deadlocks,
* see the commit a00164c04d for more information.
*/
typedef struct _StatefulParserEmittedMessages
{
LogMessage *emitted_messages[EXPECTED_NUMBER_OF_MESSAGES_EMITTED];
GPtrArray *emitted_messages_overflow;
gint num_emitted_messages;
} StatefulParserEmittedMessages;
#define STATEFUL_PARSER_EMITTED_MESSAGES_INIT {0}
void stateful_parser_emitted_messages_add(StatefulParserEmittedMessages *self, LogMessage *msg);
void stateful_parser_emitted_messages_flush(StatefulParserEmittedMessages *self, StatefulParser *parser);
#endif
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