1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
/* header for ratelimit.c
*
* Copyright 2012-2016 Adiscon GmbH.
*
* This file is part of the rsyslog runtime library.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
* -or-
* see COPYING.ASL20 in the source distribution
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef INCLUDED_RATELIMIT_H
#define INCLUDED_RATELIMIT_H
struct ratelimit_s {
char *name; /**< rate limiter name, e.g. for user messages */
/* support for Linux kernel-type ratelimiting */
unsigned int interval;
unsigned int burst;
intTiny severity; /**< ratelimit only equal or lower severity levels (eq or higher values) */
unsigned done;
unsigned missed;
time_t begin;
/* support for "last message repeated n times */
unsigned nsupp; /**< nbr of msgs suppressed */
smsg_t *pMsg;
sbool bThreadSafe; /**< do we need to operate in Thread-Safe mode? */
sbool bNoTimeCache; /**< if we shall not used cached reception time */
pthread_mutex_t mut; /**< mutex if thread-safe operation desired */
};
/* prototypes */
rsRetVal ratelimitNew(ratelimit_t **ppThis, const char *modname, const char *dynname);
void ratelimitSetThreadSafe(ratelimit_t *ratelimit);
void ratelimitSetLinuxLike(ratelimit_t *ratelimit, unsigned int interval, unsigned int burst);
void ratelimitSetNoTimeCache(ratelimit_t *ratelimit);
void ratelimitSetSeverity(ratelimit_t *ratelimit, intTiny severity);
rsRetVal ratelimitMsgCount(ratelimit_t *ratelimit, time_t tt, const char* const appname);
rsRetVal ratelimitMsg(ratelimit_t *ratelimit, smsg_t *pMsg, smsg_t **ppRep);
rsRetVal ratelimitAddMsg(ratelimit_t *ratelimit, multi_submit_t *pMultiSub, smsg_t *pMsg);
void ratelimitDestruct(ratelimit_t *pThis);
int ratelimitChecked(ratelimit_t *ratelimit);
rsRetVal ratelimitModInit(void);
void ratelimitModExit(void);
#endif /* #ifndef INCLUDED_RATELIMIT_H */
|
