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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* Fluent Bit
* ==========
* Copyright (C) 2015-2022 The Fluent Bit Authors
*
* 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
*
* 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 FLB_FILTER_H
#define FLB_FILTER_H
#include <fluent-bit/flb_info.h>
#ifdef FLB_HAVE_REGEX
#include <fluent-bit/flb_regex.h>
#endif
#ifdef FLB_HAVE_METRICS
#include <fluent-bit/flb_metrics.h>
#endif
#include <fluent-bit/flb_config.h>
#include <fluent-bit/flb_config_map.h>
#include <fluent-bit/flb_input_chunk.h>
#include <msgpack.h>
#include <cmetrics/cmetrics.h>
#include <cmetrics/cmt_counter.h>
#define FLB_FILTER_MODIFIED 1
#define FLB_FILTER_NOTOUCH 2
struct flb_input_instance;
struct flb_filter_instance;
struct flb_filter_plugin {
int flags; /* Flags (not available at the moment */
char *name; /* Filter short name */
char *description; /* Description */
/* Config map */
struct flb_config_map *config_map;
/* Callbacks */
int (*cb_init) (struct flb_filter_instance *, struct flb_config *, void *);
int (*cb_filter) (const void *, size_t,
const char *, int,
void **, size_t *,
struct flb_filter_instance *,
struct flb_input_instance *,
void *, struct flb_config *);
int (*cb_exit) (void *, struct flb_config *);
struct mk_list _head; /* Link to parent list (config->filters) */
};
struct flb_filter_instance {
int id; /* instance id */
int log_level; /* instance log level */
char name[32]; /* numbered name */
char *alias; /* alias name */
char *match; /* match rule based on Tags */
#ifdef FLB_HAVE_REGEX
struct flb_regex *match_regex; /* match rule (regex) based on Tags */
#endif
void *context; /* Instance local context */
void *data;
struct flb_filter_plugin *p; /* original plugin */
struct mk_list properties; /* config properties */
struct mk_list *config_map; /* configuration map */
struct mk_list _head; /* link to config->filters */
/*
* CMetrics
* --------
*/
struct cmt *cmt; /* parent context */
struct cmt_counter *cmt_add_records; /* m: filter_add_records_total */
struct cmt_counter *cmt_drop_records; /* m: filter_drop_records_total */
#ifdef FLB_HAVE_METRICS
struct flb_metrics *metrics; /* metrics */
#endif
/* Keep a reference to the original context this instance belongs to */
struct flb_config *config;
};
static inline int flb_filter_config_map_set(struct flb_filter_instance *ins,
void *context)
{
return flb_config_map_set(&ins->properties, ins->config_map, context);
}
int flb_filter_set_property(struct flb_filter_instance *ins,
const char *k, const char *v);
const char *flb_filter_get_property(const char *key,
struct flb_filter_instance *ins);
struct flb_filter_instance *flb_filter_new(struct flb_config *config,
const char *filter, void *data);
void flb_filter_exit(struct flb_config *config);
void flb_filter_do(struct flb_input_chunk *ic,
const void *data, size_t bytes,
const char *tag, int tag_len,
struct flb_config *config);
const char *flb_filter_name(struct flb_filter_instance *ins);
int flb_filter_init_all(struct flb_config *config);
void flb_filter_set_context(struct flb_filter_instance *ins, void *context);
void flb_filter_instance_destroy(struct flb_filter_instance *ins);
#endif