/src/fluent-bit/src/record_accessor/flb_ra_parser.c

Source (jump to first uncovered line)
/* -*- 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_slist.h>
#include <fluent-bit/flb_mem.h>
#include <fluent-bit/flb_sds.h>
#include <fluent-bit/flb_log.h>
#include <fluent-bit/record_accessor/flb_ra_parser.h>

#include "ra_parser.h"
#include "ra_lex.h"

int flb_ra_parser_subkey_count(struct flb_ra_parser *rp)
{
    if (rp == NULL || rp->key == NULL) {
        return -1;
    }
    else if (rp->type != FLB_RA_PARSER_KEYMAP) {
        return 0;
    }
    else if(rp->key->subkeys == NULL) {
        return -1;
    }

    return mk_list_size(rp->key->subkeys);
}

void flb_ra_parser_dump(struct flb_ra_parser *rp)
{
    struct mk_list *head;
    struct flb_ra_key *key;
    struct flb_ra_subentry *entry;

    key = rp->key;
    if (rp->type == FLB_RA_PARSER_STRING) {
        printf("type       : STRING\n");
        printf("string     : '%s'\n", key->name);
    }
    if (rp->type == FLB_RA_PARSER_REGEX_ID) {
        printf("type       : REGEX_ID\n");
        printf("integer    : '%i'\n", rp->id);
    }
    if (rp->type == FLB_RA_PARSER_TAG) {
        printf("type       : TAG\n");
    }
    if (rp->type == FLB_RA_PARSER_TAG_PART) {
        printf("type       : TAG[%i]\n", rp->id);
    }
    else if (rp->type == FLB_RA_PARSER_KEYMAP) {
        printf("type       : KEYMAP\n");
        if (rp->key) {
            printf("key name   : %s\n", key->name);
            mk_list_foreach(head, key->subkeys) {
                entry = mk_list_entry(head, struct flb_ra_subentry, _head);
                if (entry->type == FLB_RA_PARSER_STRING) {
                    printf(" - subkey  : %s\n", entry->str);
                }
                else if (entry->type == FLB_RA_PARSER_ARRAY_ID) {
                    printf(" - array id: %i\n", entry->array_id);
                }
            }
        }
    }
}

static void ra_parser_subentry_destroy_all(struct mk_list *list)
{
    struct mk_list *tmp;
    struct mk_list *head;
    struct flb_ra_subentry *entry;

    mk_list_foreach_safe(head, tmp, list) {
        entry = mk_list_entry(head, struct flb_ra_subentry, _head);
        mk_list_del(&entry->_head);
        if (entry->type == FLB_RA_PARSER_STRING) {
            flb_sds_destroy(entry->str);
        }
        flb_free(entry);
    }
}

int flb_ra_parser_subentry_add_string(struct flb_ra_parser *rp, char *key)
{
    struct flb_ra_subentry *entry;

    entry = flb_malloc(sizeof(struct flb_ra_subentry));
    if (!entry) {
        flb_errno();
        return -1;
    }

    entry->type = FLB_RA_PARSER_STRING;
    entry->str = flb_sds_create(key);
    if (!entry->str) {
        flb_errno();
        flb_free(entry);
        return -1;
    }
    mk_list_add(&entry->_head, rp->slist);

    return 0;
}

int flb_ra_parser_subentry_add_array_id(struct flb_ra_parser *rp, int id)
{
    struct flb_ra_subentry *entry;

    entry = flb_malloc(sizeof(struct flb_ra_subentry));
    if (!entry) {
        flb_errno();
        return -1;
    }

    entry->type = FLB_RA_PARSER_ARRAY_ID;
    entry->array_id = id;
    mk_list_add(&entry->_head, rp->slist);

    return 0;
}


struct flb_ra_key *flb_ra_parser_key_add(struct flb_ra_parser *rp, char *key)
{
    struct flb_ra_key *k;

    k = flb_malloc(sizeof(struct flb_ra_key));
    if (!k) {
        flb_errno();
        return NULL;
    }

    k->name = flb_sds_create(key);
    if (!k->name) {
        flb_errno();
        flb_free(k);
        return NULL;
    }
    k->subkeys = NULL;

    return k;
}

struct flb_ra_array *flb_ra_parser_array_add(struct flb_ra_parser *rp, int index)
{
    struct flb_ra_array *arr;

    if (index < 0) {
        return NULL;
    }

    arr = flb_malloc(sizeof(struct flb_ra_array));
    if (!arr) {
        flb_errno();
        return NULL;
    }

    arr->index = index;
    arr->subkeys = NULL;

    return arr;
}

struct flb_ra_key *flb_ra_parser_string_add(struct flb_ra_parser *rp,
                                            char *str, int len)
{
    struct flb_ra_key *k;

    k = flb_malloc(sizeof(struct flb_ra_key));
    if (!k) {
        flb_errno();
        return NULL;
    }

    k->name = flb_sds_create_len(str, len);
    if (!k->name) {
        flb_errno();
        flb_free(k);
        return NULL;
    }
    k->subkeys = NULL;

    return k;
}

static struct flb_ra_parser *flb_ra_parser_create()
{
    struct flb_ra_parser *rp;

    rp = flb_calloc(1, sizeof(struct flb_ra_parser));
    if (!rp) {
        flb_errno();
        return NULL;
    }
    rp->type = -1;
    rp->key = NULL;
    rp->slist = flb_malloc(sizeof(struct mk_list));
    if (!rp->slist) {
        flb_errno();
        flb_free(rp);
        return NULL;
    }
    mk_list_init(rp->slist);

    return rp;
}

struct flb_ra_parser *flb_ra_parser_string_create(char *str, int len)
{
    struct flb_ra_parser *rp;

    rp = flb_ra_parser_create();
    if (!rp) {
        flb_error("[record accessor] could not create string context");
        return NULL;
    }

    rp->type = FLB_RA_PARSER_STRING;
    rp->key = flb_malloc(sizeof(struct flb_ra_key));
    if (!rp->key) {
        flb_errno();
        flb_ra_parser_destroy(rp);
        return NULL;
    }
    rp->key->subkeys = NULL;
    rp->key->name = flb_sds_create_len(str, len);
    if (!rp->key->name) {
        flb_ra_parser_destroy(rp);
        return NULL;
    }

    return rp;
}

struct flb_ra_parser *flb_ra_parser_regex_id_create(int id)
{
    struct flb_ra_parser *rp;

    rp = flb_ra_parser_create();
    if (!rp) {
        flb_error("[record accessor] could not create string context");
        return NULL;
    }

    rp->type = FLB_RA_PARSER_REGEX_ID;
    rp->id = id;
    return rp;
}

struct flb_ra_parser *flb_ra_parser_tag_create()
{
    struct flb_ra_parser *rp;

    rp = flb_ra_parser_create();
    if (!rp) {
        flb_error("[record accessor] could not create tag context");
        return NULL;
    }

    rp->type = FLB_RA_PARSER_TAG;
    return rp;
}

struct flb_ra_parser *flb_ra_parser_tag_part_create(int id)
{
    struct flb_ra_parser *rp;

    rp = flb_ra_parser_create();
    if (!rp) {
        flb_error("[record accessor] could not create tag context");
        return NULL;
    }

    rp->type = FLB_RA_PARSER_TAG_PART;
    rp->id = id;

    return rp;
}

struct flb_ra_parser *flb_ra_parser_meta_create(char *str, int len)
{
    int ret;
    yyscan_t scanner;
    YY_BUFFER_STATE buf;
    flb_sds_t s;
    struct flb_ra_parser *rp;
    struct flb_ra_key *key;

    rp = flb_ra_parser_create();
    if (!rp) {
        flb_error("[record accessor] could not create meta context");
        return NULL;
    }

    /* Temporal buffer of string with fixed length */
    s = flb_sds_create_len(str, len);
    if (!s) {
        flb_errno();
        flb_ra_parser_destroy(rp);
        return NULL;
    }

    /* Flex/Bison work */
    flb_ra_lex_init(&scanner);
    buf = flb_ra__scan_string(s, scanner);

    ret = flb_ra_parse(rp, s, scanner);

    /* release resources */
    flb_sds_destroy(s);
    flb_ra__delete_buffer(buf, scanner);
    flb_ra_lex_destroy(scanner);

    /* Finish structure mapping */
    if (rp->type == FLB_RA_PARSER_KEYMAP) {
        if (rp->key) {
            key = rp->key;
            key->subkeys = rp->slist;
            rp->slist = NULL;
        }
    }

    if (ret != 0) {
        flb_ra_parser_destroy(rp);
        return NULL;
    }

    return rp;
}

void flb_ra_parser_destroy(struct flb_ra_parser *rp)
{
    struct flb_ra_key *key;

    key = rp->key;
    if (key) {
        flb_sds_destroy(key->name);
        if (key->subkeys) {
            ra_parser_subentry_destroy_all(key->subkeys);
            flb_free(key->subkeys);
        }
        flb_free(rp->key);
    }
    if (rp->slist) {
        ra_parser_subentry_destroy_all(rp->slist);
        flb_free(rp->slist);
    }
    flb_free(rp);
}

Coverage Report

Created: 2025-01-09 07:36

Line	Count	Source (jump to first uncovered line)
1		/* -- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -- */
2
3		/* Fluent Bit
4		* ==========
5		* Copyright (C) 2015-2024 The Fluent Bit Authors
6		*
7		* Licensed under the Apache License, Version 2.0 (the "License");
8		* you may not use this file except in compliance with the License.
9		* You may obtain a copy of the License at
10		*
11		* http://www.apache.org/licenses/LICENSE-2.0
12		*
13		* Unless required by applicable law or agreed to in writing, software
14		* distributed under the License is distributed on an "AS IS" BASIS,
15		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16		* See the License for the specific language governing permissions and
17		* limitations under the License.
18		*/
19
20		#include <fluent-bit/flb_info.h>
21		#include <fluent-bit/flb_slist.h>
22		#include <fluent-bit/flb_mem.h>
23		#include <fluent-bit/flb_sds.h>
24		#include <fluent-bit/flb_log.h>
25		#include <fluent-bit/record_accessor/flb_ra_parser.h>
26
27		#include "ra_parser.h"
28		#include "ra_lex.h"
29
30		int flb_ra_parser_subkey_count(struct flb_ra_parser *rp)
31	0	{
32	0	if (rp == NULL \|\| rp->key == NULL) {
33	0	return -1;
34	0	}
35	0	else if (rp->type != FLB_RA_PARSER_KEYMAP) {
36	0	return 0;
37	0	}
38	0	else if(rp->key->subkeys == NULL) {
39	0	return -1;
40	0	}
41
42	0	return mk_list_size(rp->key->subkeys);
43	0	}
44
45		void flb_ra_parser_dump(struct flb_ra_parser *rp)
46	334k	{
47	334k	struct mk_list *head;
48	334k	struct flb_ra_key *key;
49	334k	struct flb_ra_subentry *entry;
50
51	334k	key = rp->key;
52	334k	if (rp->type == FLB_RA_PARSER_STRING) {
53	166k	printf("type : STRING\n");
54	166k	printf("string : '%s'\n", key->name);
55	166k	}
56	334k	if (rp->type == FLB_RA_PARSER_REGEX_ID) {
57	1.93k	printf("type : REGEX_ID\n");
58	1.93k	printf("integer : '%i'\n", rp->id);
59	1.93k	}
60	334k	if (rp->type == FLB_RA_PARSER_TAG) {
61	302	printf("type : TAG\n");
62	302	}
63	334k	if (rp->type == FLB_RA_PARSER_TAG_PART) {
64	477	printf("type : TAG[%i]\n", rp->id);
65	477	}
66	334k	else if (rp->type == FLB_RA_PARSER_KEYMAP) {
67	165k	printf("type : KEYMAP\n");
68	165k	if (rp->key) {
69	164k	printf("key name : %s\n", key->name);
70	164k	mk_list_foreach(head, key->subkeys) {
71	41.9k	entry = mk_list_entry(head, struct flb_ra_subentry, _head);
72	41.9k	if (entry->type == FLB_RA_PARSER_STRING) {
73	5.36k	printf(" - subkey : %s\n", entry->str);
74	5.36k	}
75	36.5k	else if (entry->type == FLB_RA_PARSER_ARRAY_ID) {
76	36.5k	printf(" - array id: %i\n", entry->array_id);
77	36.5k	}
78	41.9k	}
79	164k	}
80	165k	}
81	334k	}
82
83		static void ra_parser_subentry_destroy_all(struct mk_list *list)
84	379k	{
85	379k	struct mk_list *tmp;
86	379k	struct mk_list *head;
87	379k	struct flb_ra_subentry *entry;
88
89	379k	mk_list_foreach_safe(head, tmp, list) {
90	45.1k	entry = mk_list_entry(head, struct flb_ra_subentry, _head);
91	45.1k	mk_list_del(&entry->_head);
92	45.1k	if (entry->type == FLB_RA_PARSER_STRING) {
93	6.54k	flb_sds_destroy(entry->str);
94	6.54k	}
95	45.1k	flb_free(entry);
96	45.1k	}
97	379k	}
98
99		int flb_ra_parser_subentry_add_string(struct flb_ra_parser rp, char key)
100	7.02k	{
101	7.02k	struct flb_ra_subentry *entry;
102
103	7.02k	entry = flb_malloc(sizeof(struct flb_ra_subentry));
104	7.02k	if (!entry) {
105	215	flb_errno();
106	215	return -1;
107	215	}
108
109	6.81k	entry->type = FLB_RA_PARSER_STRING;
110	6.81k	entry->str = flb_sds_create(key);
111	6.81k	if (!entry->str) {
112	266	flb_errno();
113	266	flb_free(entry);
114	266	return -1;
115	266	}
116	6.54k	mk_list_add(&entry->_head, rp->slist);
117
118	6.54k	return 0;
119	6.81k	}
120
121		int flb_ra_parser_subentry_add_array_id(struct flb_ra_parser *rp, int id)
122	38.8k	{
123	38.8k	struct flb_ra_subentry *entry;
124
125	38.8k	entry = flb_malloc(sizeof(struct flb_ra_subentry));
126	38.8k	if (!entry) {
127	209	flb_errno();
128	209	return -1;
129	209	}
130
131	38.6k	entry->type = FLB_RA_PARSER_ARRAY_ID;
132	38.6k	entry->array_id = id;
133	38.6k	mk_list_add(&entry->_head, rp->slist);
134
135	38.6k	return 0;
136	38.8k	}
137
138
139		struct flb_ra_key flb_ra_parser_key_add(struct flb_ra_parser rp, char *key)
140	186k	{
141	186k	struct flb_ra_key *k;
142
143	186k	k = flb_malloc(sizeof(struct flb_ra_key));
144	186k	if (!k) {
145	231	flb_errno();
146	231	return NULL;
147	231	}
148
149	185k	k->name = flb_sds_create(key);
150	185k	if (!k->name) {
151	834	flb_errno();
152	834	flb_free(k);
153	834	return NULL;
154	834	}
155	184k	k->subkeys = NULL;
156
157	184k	return k;
158	185k	}
159
160		struct flb_ra_array flb_ra_parser_array_add(struct flb_ra_parser rp, int index)
161	0	{
162	0	struct flb_ra_array *arr;
163
164	0	if (index < 0) {
165	0	return NULL;
166	0	}
167
168	0	arr = flb_malloc(sizeof(struct flb_ra_array));
169	0	if (!arr) {
170	0	flb_errno();
171	0	return NULL;
172	0	}
173
174	0	arr->index = index;
175	0	arr->subkeys = NULL;
176
177	0	return arr;
178	0	}
179
180		struct flb_ra_key flb_ra_parser_string_add(struct flb_ra_parser rp,
181		char *str, int len)
182	0	{
183	0	struct flb_ra_key *k;
184
185	0	k = flb_malloc(sizeof(struct flb_ra_key));
186	0	if (!k) {
187	0	flb_errno();
188	0	return NULL;
189	0	}
190
191	0	k->name = flb_sds_create_len(str, len);
192	0	if (!k->name) {
193	0	flb_errno();
194	0	flb_free(k);
195	0	return NULL;
196	0	}
197	0	k->subkeys = NULL;
198
199	0	return k;
200	0	}
201
202		static struct flb_ra_parser *flb_ra_parser_create()
203	379k	{
204	379k	struct flb_ra_parser *rp;
205
206	379k	rp = flb_calloc(1, sizeof(struct flb_ra_parser));
207	379k	if (!rp) {
208	2	flb_errno();
209	2	return NULL;
210	2	}
211	379k	rp->type = -1;
212	379k	rp->key = NULL;
213	379k	rp->slist = flb_malloc(sizeof(struct mk_list));
214	379k	if (!rp->slist) {
215	4	flb_errno();
216	4	flb_free(rp);
217	4	return NULL;
218	4	}
219	379k	mk_list_init(rp->slist);
220
221	379k	return rp;
222	379k	}
223
224		struct flb_ra_parser flb_ra_parser_string_create(char str, int len)
225	188k	{
226	188k	struct flb_ra_parser *rp;
227
228	188k	rp = flb_ra_parser_create();
229	188k	if (!rp) {
230	1	flb_error("[record accessor] could not create string context");
231	1	return NULL;
232	1	}
233
234	188k	rp->type = FLB_RA_PARSER_STRING;
235	188k	rp->key = flb_malloc(sizeof(struct flb_ra_key));
236	188k	if (!rp->key) {
237	2	flb_errno();
238	2	flb_ra_parser_destroy(rp);
239	2	return NULL;
240	2	}
241	188k	rp->key->subkeys = NULL;
242	188k	rp->key->name = flb_sds_create_len(str, len);
243	188k	if (!rp->key->name) {
244	2	flb_ra_parser_destroy(rp);
245	2	return NULL;
246	2	}
247
248	188k	return rp;
249	188k	}
250
251		struct flb_ra_parser *flb_ra_parser_regex_id_create(int id)
252	2.41k	{
253	2.41k	struct flb_ra_parser *rp;
254
255	2.41k	rp = flb_ra_parser_create();
256	2.41k	if (!rp) {
257	1	flb_error("[record accessor] could not create string context");
258	1	return NULL;
259	1	}
260
261	2.41k	rp->type = FLB_RA_PARSER_REGEX_ID;
262	2.41k	rp->id = id;
263	2.41k	return rp;
264	2.41k	}
265
266		struct flb_ra_parser *flb_ra_parser_tag_create()
267	684	{
268	684	struct flb_ra_parser *rp;
269
270	684	rp = flb_ra_parser_create();
271	684	if (!rp) {
272	1	flb_error("[record accessor] could not create tag context");
273	1	return NULL;
274	1	}
275
276	683	rp->type = FLB_RA_PARSER_TAG;
277	683	return rp;
278	684	}
279
280		struct flb_ra_parser *flb_ra_parser_tag_part_create(int id)
281	1.06k	{
282	1.06k	struct flb_ra_parser *rp;
283
284	1.06k	rp = flb_ra_parser_create();
285	1.06k	if (!rp) {
286	2	flb_error("[record accessor] could not create tag context");
287	2	return NULL;
288	2	}
289
290	1.06k	rp->type = FLB_RA_PARSER_TAG_PART;
291	1.06k	rp->id = id;
292
293	1.06k	return rp;
294	1.06k	}
295
296		struct flb_ra_parser flb_ra_parser_meta_create(char str, int len)
297	186k	{
298	186k	int ret;
299	186k	yyscan_t scanner;
300	186k	YY_BUFFER_STATE buf;
301	186k	flb_sds_t s;
302	186k	struct flb_ra_parser *rp;
303	186k	struct flb_ra_key *key;
304
305	186k	rp = flb_ra_parser_create();
306	186k	if (!rp) {
307	1	flb_error("[record accessor] could not create meta context");
308	1	return NULL;
309	1	}
310
311		/* Temporal buffer of string with fixed length */
312	186k	s = flb_sds_create_len(str, len);
313	186k	if (!s) {
314	2	flb_errno();
315	2	flb_ra_parser_destroy(rp);
316	2	return NULL;
317	2	}
318
319		/* Flex/Bison work */
320	186k	flb_ra_lex_init(&scanner);
321	186k	buf = flb_ra__scan_string(s, scanner);
322
323	186k	ret = flb_ra_parse(rp, s, scanner);
324
325		/* release resources */
326	186k	flb_sds_destroy(s);
327	186k	flb_ra__delete_buffer(buf, scanner);
328	186k	flb_ra_lex_destroy(scanner);
329
330		/* Finish structure mapping */
331	186k	if (rp->type == FLB_RA_PARSER_KEYMAP) {
332	186k	if (rp->key) {
333	184k	key = rp->key;
334	184k	key->subkeys = rp->slist;
335	184k	rp->slist = NULL;
336	184k	}
337	186k	}
338
339	186k	if (ret != 0) {
340	233	flb_ra_parser_destroy(rp);
341	233	return NULL;
342	233	}
343
344	185k	return rp;
345	186k	}
346
347		void flb_ra_parser_destroy(struct flb_ra_parser *rp)
348	379k	{
349	379k	struct flb_ra_key *key;
350
351	379k	key = rp->key;
352	379k	if (key) {
353	373k	flb_sds_destroy(key->name);
354	373k	if (key->subkeys) {
355	184k	ra_parser_subentry_destroy_all(key->subkeys);
356	184k	flb_free(key->subkeys);
357	184k	}
358	373k	flb_free(rp->key);
359	373k	}
360	379k	if (rp->slist) {
361	194k	ra_parser_subentry_destroy_all(rp->slist);
362	194k	flb_free(rp->slist);
363	194k	}
364	379k	flb_free(rp);
365	379k	}