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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.
*/
#include <fluent-bit/flb_info.h>
#include <fluent-bit/multiline/flb_ml.h>
#include <fluent-bit/multiline/flb_ml_rule.h>
#include <fluent-bit/multiline/flb_ml_parser.h>
#define rule flb_ml_rule_create
static void rule_error(struct flb_ml_parser *mlp)
{
int id;
id = mk_list_size(&mlp->regex_rules);
flb_error("[multiline: python] rule #%i could not be created", id);
flb_ml_parser_destroy(mlp);
}
/* Python */
struct flb_ml_parser *flb_ml_parser_python(struct flb_config *config, char *key)
{
int ret;
struct flb_ml_parser *mlp;
mlp = flb_ml_parser_create(config, /* Fluent Bit context */
"python", /* name */
FLB_ML_REGEX, /* type */
NULL, /* match_str */
FLB_FALSE, /* negate */
FLB_ML_FLUSH_TIMEOUT, /* flush_ms */
key, /* key_content */
NULL, /* key_group */
NULL, /* key_pattern */
NULL, /* parser ctx */
NULL); /* parser name */
if (!mlp) {
flb_error("[multiline] could not create 'python mode'");
return NULL;
}
/* rule(:start_state, /^Traceback \(most recent call last\):$/, :python) */
ret = rule(mlp,
"start_state", "/^Traceback \\(most recent call last\\):$/",
"python", NULL);
if (ret != 0) {
rule_error(mlp);
return NULL;
}
/* rule(:python, /^[\t ]+File /, :python_code) */
ret = rule(mlp, "python", "/^[\\t ]+File /", "python_code", NULL);
if (ret != 0) {
rule_error(mlp);
return NULL;
}
/* rule(:python_code, /[^\t ]/, :python) */
ret = rule(mlp, "python_code", "/[^\\t ]/", "python", NULL);
if (ret != 0) {
rule_error(mlp);
return NULL;
}
/* rule(:python, /^(?:[^\s.():]+\.)*[^\s.():]+:/, :start_state) */
ret = rule(mlp, "python", "/^(?:[^\\s.():]+\\.)*[^\\s.():]+:/", "start_state", NULL);
if (ret != 0) {
rule_error(mlp);
return NULL;
}
/* Map the rules (mandatory for regex rules) */
ret = flb_ml_parser_init(mlp);
if (ret != 0) {
flb_error("[multiline: python] error on mapping rules");
flb_ml_parser_destroy(mlp);
return NULL;
}
return mlp;
}
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