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flb_parser.c
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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* Fluent Bit
* ==========
* Copyright (C) 2015-2024 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.
*/
#include <fluent-bit/flb_info.h>
#include <fluent-bit/flb_log.h>
#include <fluent-bit/flb_mem.h>
#include <fluent-bit/flb_str.h>
#include <fluent-bit/flb_parser.h>
#include <fluent-bit/flb_parser_decoder.h>
#include <fluent-bit/flb_time.h>
#include <fluent-bit/flb_error.h>
#include <fluent-bit/flb_utils.h>
#include <fluent-bit/flb_config.h>
#include <fluent-bit/flb_strptime.h>
#include <fluent-bit/flb_env.h>
#include <fluent-bit/flb_str.h>
#include <fluent-bit/flb_kv.h>
#include <fluent-bit/flb_config_format.h>
#include <fluent-bit/multiline/flb_ml.h>
#include <fluent-bit/multiline/flb_ml_parser.h>
#include <fluent-bit/multiline/flb_ml_rule.h>
#include <cfl/cfl.h>
#include <cfl/cfl_kvlist.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <limits.h>
#include <string.h>
static inline uint32_t digits10(uint64_t v) {
if (v < 10) return 1;
if (v < 100) return 2;
if (v < 1000) return 3;
if (v < 1000000000000UL) {
if (v < 100000000UL) {
if (v < 1000000) {
if (v < 10000) return 4;
return 5 + (v >= 100000);
}
return 7 + (v >= 10000000UL);
}
if (v < 10000000000UL) {
return 9 + (v >= 1000000000UL);
}
return 11 + (v >= 100000000000UL);
}
return 12 + digits10(v / 1000000000000UL);
}
static unsigned u64_to_str(uint64_t value, char* dst) {
static const char digits[201] =
"0001020304050607080910111213141516171819"
"2021222324252627282930313233343536373839"
"4041424344454647484950515253545556575859"
"6061626364656667686970717273747576777879"
"8081828384858687888990919293949596979899";
uint32_t const length = digits10(value);
uint32_t next = length - 1;
while (value >= 100) {
int const i = (value % 100) * 2;
value /= 100;
dst[next] = digits[i + 1];
dst[next - 1] = digits[i];
next -= 2;
}
/* Handle last 1-2 digits */
if (value < 10) {
dst[next] = '0' + (uint32_t) value;
} else {
int i = (uint32_t) value * 2;
dst[next] = digits[i + 1];
dst[next - 1] = digits[i];
}
return length;
}
int flb_parser_regex_do(struct flb_parser *parser,
const char *buf, size_t length,
void **out_buf, size_t *out_size,
struct flb_time *out_time);
int flb_parser_json_do(struct flb_parser *parser,
const char *buf, size_t length,
void **out_buf, size_t *out_size,
struct flb_time *out_time);
int flb_parser_ltsv_do(struct flb_parser *parser,
const char *buf, size_t length,
void **out_buf, size_t *out_size,
struct flb_time *out_time);
int flb_parser_logfmt_do(struct flb_parser *parser,
const char *buf, size_t length,
void **out_buf, size_t *out_size,
struct flb_time *out_time);
/*
* This function is used to free all aspects of a parser
* which is provided by the caller of flb_create_parser.
* Specifically, this function frees all but parser.types and
* parser.decoders from a parser.
*
* This function is only to be used in parser creation routines.
*/
static void flb_interim_parser_destroy(struct flb_parser *parser)
{
if (parser->type == FLB_PARSER_REGEX) {
flb_regex_destroy(parser->regex);
flb_free(parser->p_regex);
}
flb_free(parser->name);
if (parser->time_fmt) {
flb_free(parser->time_fmt);
}
if (parser->time_fmt_year) {
flb_free(parser->time_fmt_year);
}
if (parser->time_fmt_full) {
flb_free(parser->time_fmt_full);
}
if (parser->time_key) {
flb_free(parser->time_key);
}
mk_list_del(&parser->_head);
flb_free(parser);
}
struct flb_parser *flb_parser_create(const char *name, const char *format,
const char *p_regex,
int skip_empty,
const char *time_fmt, const char *time_key,
const char *time_offset,
int time_keep,
int time_strict,
int logfmt_no_bare_keys,
struct flb_parser_types *types,
int types_len,
struct mk_list *decoders,
struct flb_config *config)
{
int ret;
int len;
int diff = 0;
int size;
int is_epoch = FLB_FALSE;
char *tmp;
char *timeptr;
struct mk_list *head;
struct flb_parser *p;
struct flb_regex *regex;
/* Iterate current parsers and make sure the new one don't exists */
mk_list_foreach(head, &config->parsers) {
p = mk_list_entry(head, struct flb_parser, _head);
if (p->name && strcmp(p->name, name) == 0) {
flb_error("[parser] parser named '%s' already exists, skip.",
name);
return NULL;
}
}
/* Allocate context */
p = flb_calloc(1, sizeof(struct flb_parser));
if (!p) {
flb_errno();
return NULL;
}
p->decoders = decoders;
mk_list_add(&p->_head, &config->parsers);
/* Format lookup */
if (strcasecmp(format, "regex") == 0) {
p->type = FLB_PARSER_REGEX;
}
else if (strcasecmp(format, "json") == 0) {
p->type = FLB_PARSER_JSON;
}
else if (strcasecmp(format, "ltsv") == 0) {
p->type = FLB_PARSER_LTSV;
}
else if (strcasecmp(format, "logfmt") == 0) {
p->type = FLB_PARSER_LOGFMT;
}
else {
flb_error("[parser:%s] Invalid format %s", name, format);
mk_list_del(&p->_head);
flb_free(p);
return NULL;
}
if (p->type == FLB_PARSER_REGEX) {
if (!p_regex) {
flb_error("[parser:%s] Invalid regex pattern", name);
mk_list_del(&p->_head);
flb_free(p);
return NULL;
}
regex = flb_regex_create(p_regex);
if (!regex) {
flb_error("[parser:%s] Invalid regex pattern %s", name, p_regex);
mk_list_del(&p->_head);
flb_free(p);
return NULL;
}
p->regex = regex;
p->skip_empty = skip_empty;
p->p_regex = flb_strdup(p_regex);
}
p->name = flb_strdup(name);
if (time_fmt) {
p->time_fmt_full = flb_strdup(time_fmt);
if (!p->time_fmt_full) {
flb_error("[parser:%s] could not duplicate time fmt full", name);
flb_interim_parser_destroy(p);
return NULL;
}
p->time_fmt = flb_strdup(time_fmt);
if (!p->time_fmt) {
flb_error("[parser:%s] could not duplicate time fmt", name);
flb_interim_parser_destroy(p);
return NULL;
}
/* Check if the format is considering the year */
if (strstr(p->time_fmt, "%Y") || strstr(p->time_fmt, "%y")) {
p->time_with_year = FLB_TRUE;
}
else if (strstr(p->time_fmt, "%s")) {
is_epoch = FLB_TRUE;
p->time_with_year = FLB_TRUE;
}
else {
size = strlen(p->time_fmt);
p->time_with_year = FLB_FALSE;
p->time_fmt_year = flb_malloc(size + 4);
if (!p->time_fmt_year) {
flb_errno();
flb_interim_parser_destroy(p);
return NULL;
}
/* Append the year at the beginning */
tmp = p->time_fmt_year;
*tmp++ = '%';
*tmp++ = 'Y';
*tmp++ = ' ';
memcpy(tmp, p->time_fmt, size);
tmp += size;
*tmp++ = '\0';
}
/* Check if the format contains a timezone (%z) */
if (strstr(p->time_fmt, "%z") || strstr(p->time_fmt, "%Z") ||
strstr(p->time_fmt, "%SZ") || strstr(p->time_fmt, "%S.%LZ")) {
#if defined(FLB_HAVE_GMTOFF) || !defined(FLB_HAVE_SYSTEM_STRPTIME)
p->time_with_tz = FLB_TRUE;
#else
flb_error("[parser] timezone offset not supported");
flb_error("[parser] you cannot use %%z/%%Z on this platform");
flb_interim_parser_destroy(p);
return NULL;
#endif
}
/*
* Check if the format expect fractional seconds
*
* Since strptime(3) does not support fractional seconds, this
* requires a workaround/hack in our parser. This is a known
* issue and addressed in different ways in other languages.
*
* The following links are a good reference:
*
* - http://stackoverflow.com/questions/7114690/how-to-parse-syslog-timestamp
* - http://code.activestate.com/lists/python-list/521885
*/
if (is_epoch == FLB_TRUE || p->time_with_year == FLB_TRUE) {
timeptr = p->time_fmt;
}
else {
timeptr = p->time_fmt_year;
}
tmp = strstr(timeptr, "%L");
if (tmp) {
tmp[0] = '\0';
tmp[1] = '\0';
p->time_frac_secs = (tmp + 2);
}
/* Optional fixed timezone offset */
if (time_offset) {
diff = 0;
len = strlen(time_offset);
ret = flb_parser_tzone_offset(time_offset, len, &diff);
if (ret == -1) {
flb_interim_parser_destroy(p);
return NULL;
}
p->time_offset = diff;
}
}
if (time_key) {
p->time_key = flb_strdup(time_key);
}
p->time_keep = time_keep;
p->time_strict = time_strict;
p->logfmt_no_bare_keys = logfmt_no_bare_keys;
p->types = types;
p->types_len = types_len;
return p;
}
void flb_parser_destroy(struct flb_parser *parser)
{
int i = 0;
if (parser->type == FLB_PARSER_REGEX) {
flb_regex_destroy(parser->regex);
flb_free(parser->p_regex);
}
flb_free(parser->name);
if (parser->time_fmt) {
flb_free(parser->time_fmt);
flb_free(parser->time_fmt_full);
}
if (parser->time_fmt_year) {
flb_free(parser->time_fmt_year);
}
if (parser->time_key) {
flb_free(parser->time_key);
}
if (parser->types_len != 0) {
for (i=0; i<parser->types_len; i++){
flb_free(parser->types[i].key);
}
flb_free(parser->types);
}
if (parser->decoders) {
flb_parser_decoder_list_destroy(parser->decoders);
}
mk_list_del(&parser->_head);
flb_free(parser);
}
void flb_parser_exit(struct flb_config *config)
{
struct mk_list *tmp;
struct mk_list *head;
struct flb_parser *parser;
/* release 'parsers' */
mk_list_foreach_safe(head, tmp, &config->parsers) {
parser = mk_list_entry(head, struct flb_parser, _head);
flb_parser_destroy(parser);
}
/* release 'multiline parsers' */
flb_ml_exit(config);
}
static int proc_types_str(const char *types_str, struct flb_parser_types **types)
{
int i = 0;
int types_num = 0;
char *type_str = NULL;
size_t len;
struct mk_list *split;
struct mk_list *head;
struct flb_split_entry *sentry;
split = flb_utils_split(types_str, ' ', 256);
types_num = mk_list_size(split);
*types = flb_malloc(sizeof(struct flb_parser_types) * types_num);
for(i=0; i<types_num; i++){
(*types)[i].key = NULL;
(*types)[i].type = FLB_PARSER_TYPE_STRING;
}
i = 0;
mk_list_foreach(head ,split) {
sentry = mk_list_entry(head, struct flb_split_entry ,_head);
type_str = strchr(sentry->value ,':');
if (type_str == NULL) {
i++;
continue;
}
len = type_str - sentry->value;
(*types)[i].key = flb_strndup(sentry->value, len);
(*types)[i].key_len = len;
type_str++;
if (!strcasecmp(type_str, "integer")) {
(*types)[i].type = FLB_PARSER_TYPE_INT;
}
else if(!strcasecmp(type_str, "bool")) {
(*types)[i].type = FLB_PARSER_TYPE_BOOL;
}
else if(!strcasecmp(type_str, "float")){
(*types)[i].type = FLB_PARSER_TYPE_FLOAT;
}
else if(!strcasecmp(type_str, "hex")){
(*types)[i].type = FLB_PARSER_TYPE_HEX;
}
else {
(*types)[i].type = FLB_PARSER_TYPE_STRING;
}
i++;
}
flb_utils_split_free(split);
return i;
}
static flb_sds_t get_parser_key(struct flb_config *config,
struct flb_cf *cf, struct flb_cf_section *s,
char *key)
{
flb_sds_t tmp;
flb_sds_t val;
tmp = flb_cf_section_property_get_string(cf, s, key);
if (!tmp) {
return NULL;
}
val = flb_env_var_translate(config->env, tmp);
if (!val) {
flb_sds_destroy(tmp);
return NULL;
}
if (flb_sds_len(val) == 0) {
flb_sds_destroy(val);
flb_sds_destroy(tmp);
return NULL;
}
flb_sds_destroy(tmp);
return val;
}
/* Config file: read 'parser' definitions */
static int parser_conf_file(const char *cfg, struct flb_cf *cf,
struct flb_config *config)
{
int i = 0;
flb_sds_t name;
flb_sds_t format;
flb_sds_t regex;
flb_sds_t time_fmt;
flb_sds_t time_key;
flb_sds_t time_offset;
flb_sds_t types_str;
flb_sds_t tmp_str;
int skip_empty;
int time_keep;
int time_strict;
int logfmt_no_bare_keys;
int types_len;
struct mk_list *head;
struct mk_list *decoders = NULL;
struct flb_cf_section *s;
struct flb_parser_types *types = NULL;
/* Read all 'parser' sections */
mk_list_foreach(head, &cf->parsers) {
name = NULL;
format = NULL;
regex = NULL;
time_fmt = NULL;
time_key = NULL;
time_offset = NULL;
types_str = NULL;
tmp_str = NULL;
/* retrieve the section context */
s = mk_list_entry(head, struct flb_cf_section, _head_section);
/* name */
name = get_parser_key(config, cf, s, "name");
if (!name) {
flb_error("[parser] no parser 'name' found in file '%s'", cfg);
goto fconf_early_error;
}
/* format */
format = get_parser_key(config, cf, s, "format");
if (!format) {
flb_error("[parser] no parser 'format' found for '%s' in file '%s'",
name, cfg);
goto fconf_early_error;
}
/* regex (if 'format' == 'regex') */
regex = get_parser_key(config, cf, s, "regex");
if (!regex && strcmp(format, "regex") == 0) {
flb_error("[parser] no parser 'regex' found for '%s' in file '%s",
name, cfg);
goto fconf_early_error;
}
/* skip_empty_values */
skip_empty = FLB_TRUE;
tmp_str = get_parser_key(config, cf, s, "skip_empty_values");
if (tmp_str) {
skip_empty = flb_utils_bool(tmp_str);
flb_sds_destroy(tmp_str);
}
/* time_format */
time_fmt = get_parser_key(config, cf, s, "time_format");
/* time_key */
time_key = get_parser_key(config, cf, s, "time_key");
/* time_keep */
time_keep = FLB_FALSE;
tmp_str = get_parser_key(config, cf, s, "time_keep");
if (tmp_str) {
time_keep = flb_utils_bool(tmp_str);
flb_sds_destroy(tmp_str);
}
/* time_strict */
time_strict = FLB_TRUE;
tmp_str = get_parser_key(config, cf, s, "time_strict");
if (tmp_str) {
time_strict = flb_utils_bool(tmp_str);
flb_sds_destroy(tmp_str);
}
/* time_offset (UTC offset) */
time_offset = get_parser_key(config, cf, s, "time_offset");
/* logfmt_no_bare_keys */
logfmt_no_bare_keys = FLB_FALSE;
tmp_str = get_parser_key(config, cf, s, "logfmt_no_bare_keys");
if (tmp_str) {
logfmt_no_bare_keys = flb_utils_bool(tmp_str);
flb_sds_destroy(tmp_str);
}
/* types */
types_str = get_parser_key(config, cf, s, "types");
if (types_str) {
types_len = proc_types_str(types_str, &types);
}
else {
types_len = 0;
}
/* Decoders */
decoders = flb_parser_decoder_list_create(s);
/* Create the parser context */
if (!flb_parser_create(name, format, regex, skip_empty,
time_fmt, time_key, time_offset, time_keep, time_strict,
logfmt_no_bare_keys, types, types_len, decoders, config)) {
goto fconf_error;
}
flb_debug("[parser] new parser registered: %s", name);
flb_sds_destroy(name);
flb_sds_destroy(format);
if (regex) {
flb_sds_destroy(regex);
}
if (time_fmt) {
flb_sds_destroy(time_fmt);
}
if (time_key) {
flb_sds_destroy(time_key);
}
if (time_offset) {
flb_sds_destroy(time_offset);
}
if (types_str) {
flb_sds_destroy(types_str);
}
decoders = NULL;
}
return 0;
/* Use early exit before call to flb_parser_create */
fconf_early_error:
if (name) {
flb_sds_destroy(name);
}
if (format) {
flb_sds_destroy(format);
}
if (regex) {
flb_sds_destroy(regex);
}
return -1;
fconf_error:
flb_sds_destroy(name);
flb_sds_destroy(format);
if (regex) {
flb_sds_destroy(regex);
}
if (time_fmt) {
flb_sds_destroy(time_fmt);
}
if (time_key) {
flb_sds_destroy(time_key);
}
if (time_offset) {
flb_sds_destroy(time_offset);
}
if (types_str) {
flb_sds_destroy(types_str);
}
if (types_len) {
for (i=0; i<types_len; i++){
if (types[i].key != NULL) {
flb_free(types[i].key);
}
}
flb_free(types);
}
if (decoders) {
flb_parser_decoder_list_destroy(decoders);
}
return -1;
}
static int multiline_load_regex_rules(struct flb_ml_parser *ml_parser,
struct flb_cf_section *section,
struct flb_config *config)
{
int ret;
char *to_state = NULL;
struct mk_list list;
struct cfl_list *head;
struct cfl_kvpair *entry;
struct flb_slist_entry *from_state;
struct flb_slist_entry *regex_pattern;
struct flb_slist_entry *tmp;
cfl_list_foreach(head, §ion->properties->list) {
entry = cfl_list_entry(head, struct cfl_kvpair, _head);
/* only process 'rule' keys */
if (strcasecmp(entry->key, "rule") != 0) {
continue;
}
mk_list_init(&list);
ret = flb_slist_split_tokens(&list, entry->val->data.as_string, 3);
if (ret == -1) {
flb_error("[multiline parser: %s] invalid section on key '%s'",
ml_parser->name, entry->key);
return -1;
}
/* Get entries from the line */
from_state = flb_slist_entry_get(&list, 0);
regex_pattern = flb_slist_entry_get(&list, 1);
tmp = flb_slist_entry_get(&list, 2);
if (tmp) {
to_state = tmp->str;
}
else {
to_state = NULL;
}
if (!from_state) {
flb_error("[multiline parser: %s] 'from_state' is mandatory",
ml_parser->name);
flb_slist_destroy(&list);
return -1;
}
if (!regex_pattern) {
flb_error("[multiline parser: %s] 'regex_pattern' is mandatory",
ml_parser->name);
flb_slist_destroy(&list);
return -1;
}
ret = flb_ml_rule_create(ml_parser,
from_state->str,
regex_pattern->str,
to_state,
NULL);
if (ret == -1) {
flb_error("[multiline parser: %s] error creating rule",
ml_parser->name);
flb_slist_destroy(&list);
return -1;
}
flb_slist_destroy(&list);
}
/* Map the rules (mandatory for regex rules) */
ret = flb_ml_parser_init(ml_parser);
if (ret != 0) {
flb_error("[multiline parser: %s] invalid mapping rules, check the states",
ml_parser->name);
return -1;
}
return 0;
}
/* config file: read 'multiline_parser' sections */
static int multiline_parser_conf_file(const char *cfg, struct flb_cf *cf,
struct flb_config *config)
{
int ret;
int type;
flb_sds_t name;
flb_sds_t match_string;
int negate;
flb_sds_t key_content;
flb_sds_t key_pattern;
flb_sds_t key_group;
flb_sds_t parser;
flb_sds_t tmp;
int flush_timeout;
struct flb_parser *parser_ctx = NULL;
struct mk_list *head;
struct flb_cf_section *s;
struct flb_ml_parser *ml_parser;
/* read all 'multiline_parser' sections */
mk_list_foreach(head, &cf->multiline_parsers) {
ml_parser = NULL;
name = NULL;
type = -1;
match_string = NULL;
negate = FLB_FALSE;
key_content = NULL;
key_pattern = NULL;
key_group = NULL;
parser = NULL;
flush_timeout = -1;
tmp = NULL;
s = mk_list_entry(head, struct flb_cf_section, _head_section);
/* name */
name = get_parser_key(config, cf, s, "name");
if (!name) {
flb_error("[multiline_parser] no 'name' defined in file '%s'", cfg);
goto fconf_error;
}
/* type */
tmp = get_parser_key(config, cf, s, "type");
if (!tmp) {
flb_error("[multiline_parser] no 'type' defined in file '%s'", cfg);
goto fconf_error;
}
else {
type = flb_ml_type_lookup(tmp);
if (type == -1) {
flb_error("[multiline_parser] invalid type '%s'", tmp);
goto fconf_error;
}
flb_sds_destroy(tmp);
}
/* match_string */
match_string = get_parser_key(config, cf, s, "match_string");
/* negate */
tmp = get_parser_key(config, cf, s, "negate");
if (tmp) {
negate = flb_utils_bool(tmp);
flb_sds_destroy(tmp);
}
/* key_content */
key_content = get_parser_key(config, cf, s, "key_content");
/* key_pattern */
key_pattern = get_parser_key(config, cf, s, "key_pattern");
/* key_group */
key_group = get_parser_key(config, cf, s, "key_group");
/* parser */
parser = get_parser_key(config, cf, s, "parser");
/* flush_timeout */
tmp = get_parser_key(config, cf, s, "flush_timeout");
if (tmp) {
flush_timeout = atoi(tmp);
}
if (parser) {
parser_ctx = flb_parser_get(parser, config);
}
ml_parser = flb_ml_parser_create(config, name, type, match_string,
negate, flush_timeout, key_content,
key_group, key_pattern,
parser_ctx, parser);
if (!ml_parser) {
goto fconf_error;
}
/* if type is regex, process rules */
if (type == FLB_ML_REGEX) {
ret = multiline_load_regex_rules(ml_parser, s, config);
if (ret != 0) {
goto fconf_error;
}
}
flb_sds_destroy(name);
flb_sds_destroy(match_string);
flb_sds_destroy(key_content);
flb_sds_destroy(key_pattern);
flb_sds_destroy(key_group);
flb_sds_destroy(parser);
flb_sds_destroy(tmp);
}
return 0;
fconf_error:
if (ml_parser) {
flb_ml_parser_destroy(ml_parser);
}
flb_sds_destroy(name);
flb_sds_destroy(match_string);
flb_sds_destroy(key_content);
flb_sds_destroy(key_pattern);
flb_sds_destroy(key_group);
flb_sds_destroy(parser);
flb_sds_destroy(tmp);
return -1;
}
int flb_parser_conf_file_stat(const char *file, struct flb_config *config)
{
int ret;
struct stat st;
ret = stat(file, &st);
if (ret == -1 && errno == ENOENT) {
/* Try to resolve the real path (if exists) */
if (file[0] == '/') {
flb_utils_error(FLB_ERR_CFG_PARSER_FILE);
return -1;
}
if (config->conf_path) {
/* Handle as special case here. */
return -2;
}
return -1;
}
return 0;
}
/* Load parsers from a configuration file */
int flb_parser_conf_file(const char *file, struct flb_config *config)
{
int ret;
char tmp[PATH_MAX + 1];
char *cfg = NULL;
struct flb_cf *cf = NULL;
#ifndef FLB_HAVE_STATIC_CONF
ret = flb_parser_conf_file_stat(file, config);
if (ret == -1) {
return -1;
}
else if (ret == -2) {
snprintf(tmp, PATH_MAX, "%s%s", config->conf_path, file);
cfg = tmp;
}
else {
cfg = (char *) file;
}
cf = flb_cf_create_from_file(NULL, cfg);
#else
cf = flb_config_static_open(file);
#endif
if (!cf) {
return -1;
}
/* process 'parser' sections */
ret = parser_conf_file(cfg, cf, config);
if (ret == -1) {
flb_cf_destroy(cf);
return -1;
}
/* processs 'multiline_parser' sections */
ret = multiline_parser_conf_file(cfg, cf, config);
if (ret == -1) {
flb_cf_destroy(cf);
return -1;
}
/* link the 'cf parser' context to the config list */
mk_list_add(&cf->_head, &config->cf_parsers_list);
return 0;
}
struct flb_parser *flb_parser_get(const char *name, struct flb_config *config)
{
struct mk_list *head;
struct flb_parser *parser;
if (config == NULL || mk_list_size(&config->parsers) <= 0) {
return NULL;
}
mk_list_foreach(head, &config->parsers) {
parser = mk_list_entry(head, struct flb_parser, _head);
if (parser == NULL || parser->name == NULL) {
continue;
}
if (strcmp(parser->name, name) == 0) {
return parser;
}
}
return NULL;
}
int flb_parser_do(struct flb_parser *parser, const char *buf, size_t length,
void **out_buf, size_t *out_size, struct flb_time *out_time)
{
if (parser->type == FLB_PARSER_REGEX) {
return flb_parser_regex_do(parser, buf, length,
out_buf, out_size, out_time);
}
else if (parser->type == FLB_PARSER_JSON) {
return flb_parser_json_do(parser, buf, length,
out_buf, out_size, out_time);
}
else if (parser->type == FLB_PARSER_LTSV) {
return flb_parser_ltsv_do(parser, buf, length,
out_buf, out_size, out_time);
}
else if (parser->type == FLB_PARSER_LOGFMT) {
return flb_parser_logfmt_do(parser, buf, length,
out_buf, out_size, out_time);
}
return -1;
}
/* Given a timezone string, return it numeric offset */
int flb_parser_tzone_offset(const char *str, int len, int *tmdiff)
{
int neg;
long hour;
long min;