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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 <stdio.h>
#include <math.h>
#include <fluent-bit/flb_regex.h>
#include <fluent-bit/flb_filter.h>
#include <fluent-bit/flb_processor_plugin.h>
#include <fluent-bit/flb_utils.h>
#include <fluent-bit/flb_time.h>
#include <fluent-bit/flb_hash.h>
#include <fluent-bit/flb_pack.h>
#include <fluent-bit/flb_processor.h>
#include <fluent-bit/flb_log_event_decoder.h>
#include <fluent-bit/flb_log_event_encoder.h>
#include <cmetrics/cmetrics.h>
#include <cmetrics/cmt_histogram.h>
#include <cmetrics/cmt_summary.h>
#include <cmetrics/cmt_untyped.h>
#include <cmetrics/cmt_counter.h>
#include <cmetrics/cmt_gauge.h>
#include <cmetrics/cmt_map.h>
#include <cfl/cfl.h>
#include "variant_utils.h"
typedef int (*attribute_transformer)(void *, struct cfl_variant *value);
struct internal_processor_context {
struct mk_list *update_list;
struct mk_list *insert_list;
struct mk_list *upsert_list;
struct mk_list *convert_list;
struct mk_list *extract_list;
struct mk_list *delete_list;
struct mk_list *hash_list;
/* internal attributes ready to append */
struct cfl_list update_attributes;
struct cfl_list insert_attributes;
struct cfl_list upsert_attributes;
struct cfl_list convert_attributes;
struct cfl_list extract_attributes;
struct mk_list delete_attributes;
struct mk_list hash_attributes;
struct flb_processor_instance *instance;
struct flb_config *config;
};
/*
* LOCAL
*/
static int hex_encode(unsigned char *input_buffer,
size_t input_length,
cfl_sds_t *output_buffer)
{
const char hex[] = "0123456789abcdef";
cfl_sds_t result;
size_t index;
if (cfl_sds_alloc(*output_buffer) <= (input_length * 2)) {
result = cfl_sds_increase(*output_buffer,
(input_length * 2) -
cfl_sds_alloc(*output_buffer));
if (result == NULL) {
return FLB_FALSE;
}
*output_buffer = result;
}
for (index = 0; index < input_length; index++) {
(*output_buffer)[index * 2 + 0] = hex[(input_buffer[index] >> 4) & 0xF];
(*output_buffer)[index * 2 + 1] = hex[(input_buffer[index] >> 0) & 0xF];
}
cfl_sds_set_len(*output_buffer, input_length * 2);
(*output_buffer)[index * 2] = '\0';
return FLB_TRUE;
}
static int process_attribute_modification_list_setting(
struct flb_processor_instance *plugin_instance,
const char *setting_name,
struct mk_list *source_list,
struct mk_list *destination_list)
{
struct flb_config_map_val *source_entry;
struct mk_list *iterator;
int result;
if (source_list == NULL ||
mk_list_is_empty(source_list) == 0) {
return 0;
}
flb_config_map_foreach(iterator, source_entry, source_list) {
result = flb_slist_add(destination_list, source_entry->val.str);
if (result != 0) {
flb_plg_error(plugin_instance,
"could not append attribute name %s\n",
source_entry->val.str);
return -1;
}
}
return 0;
}
static int process_attribute_modification_kvlist_setting(
struct flb_processor_instance *plugin_instance,
const char *setting_name,
struct mk_list *source_list,
struct cfl_list *destination_list)
{
struct cfl_kv *processed_pair;
struct flb_config_map_val *source_entry;
struct mk_list *iterator;
struct flb_slist_entry *value;
struct flb_slist_entry *key;
if (source_list == NULL ||
mk_list_is_empty(source_list) == 0) {
return 0;
}
flb_config_map_foreach(iterator, source_entry, source_list) {
if (mk_list_size(source_entry->val.list) != 2) {
flb_plg_error(plugin_instance,
"'%s' expects a key and a value, "
"e.g: '%s version 1.8.0'",
setting_name, setting_name);
return -1;
}
key = mk_list_entry_first(source_entry->val.list,
struct flb_slist_entry, _head);
value = mk_list_entry_last(source_entry->val.list,
struct flb_slist_entry, _head);
processed_pair = cfl_kv_item_create(destination_list,
key->str,
value->str);
if (processed_pair == NULL) {
flb_plg_error(plugin_instance,
"could not append attribute %s=%s\n",
key->str,
value->str);
return -1;
}
}
return 0;
}
static void destroy_context(struct internal_processor_context *context)
{
if (context != NULL) {
cfl_kv_release(&context->update_attributes);
cfl_kv_release(&context->insert_attributes);
cfl_kv_release(&context->upsert_attributes);
cfl_kv_release(&context->convert_attributes);
cfl_kv_release(&context->extract_attributes);
flb_slist_destroy(&context->delete_attributes);
flb_slist_destroy(&context->hash_attributes);
flb_free(context);
}
}
static struct internal_processor_context *
create_context(struct flb_processor_instance *processor_instance,
struct flb_config *config)
{
struct internal_processor_context *context;
int result;
context = flb_calloc(1, sizeof(struct internal_processor_context));
if (context != NULL) {
context->instance = processor_instance;
context->config = config;
cfl_kv_init(&context->update_attributes);
cfl_kv_init(&context->insert_attributes);
cfl_kv_init(&context->upsert_attributes);
cfl_kv_init(&context->convert_attributes);
cfl_kv_init(&context->extract_attributes);
flb_slist_create(&context->delete_attributes);
flb_slist_create(&context->hash_attributes);
result = flb_processor_instance_config_map_set(processor_instance, (void *) context);
if (result == 0) {
result = process_attribute_modification_kvlist_setting(
processor_instance,
"update",
context->update_list,
&context->update_attributes);
}
if (result == 0) {
result = process_attribute_modification_kvlist_setting(
processor_instance,
"insert",
context->insert_list,
&context->insert_attributes);
}
if (result == 0) {
result = process_attribute_modification_kvlist_setting(
processor_instance,
"convert",
context->convert_list,
&context->convert_attributes);
}
if (result == 0) {
result = process_attribute_modification_kvlist_setting(
processor_instance,
"extract",
context->extract_list,
&context->extract_attributes);
}
if (result == 0) {
result = process_attribute_modification_kvlist_setting(
processor_instance,
"upsert",
context->upsert_list,
&context->upsert_attributes);
}
if (result == 0) {
result = process_attribute_modification_list_setting(
processor_instance,
"delete",
context->delete_list,
&context->delete_attributes);
}
if (result == 0) {
result = process_attribute_modification_list_setting(
processor_instance,
"hash",
context->hash_list,
&context->hash_attributes);
}
if (result != 0) {
destroy_context(context);
context = NULL;
}
}
else {
flb_errno();
}
return context;
}
static int cb_init(struct flb_processor_instance *processor_instance,
void *source_plugin_instance,
int source_plugin_type,
struct flb_config *config)
{
processor_instance->context = (void *) create_context(
processor_instance, config);
if (processor_instance->context == NULL) {
return FLB_PROCESSOR_FAILURE;
}
return FLB_PROCESSOR_SUCCESS;
}
static int cb_exit(struct flb_processor_instance *processor_instance)
{
if (processor_instance != NULL &&
processor_instance->context != NULL) {
destroy_context(processor_instance->context);
}
return FLB_PROCESSOR_SUCCESS;
}
static int cfl_kvlist_contains(struct cfl_kvlist *kvlist,
char *name)
{
struct cfl_list *iterator;
struct cfl_kvpair *pair;
cfl_list_foreach(iterator, &kvlist->list) {
pair = cfl_list_entry(iterator,
struct cfl_kvpair, _head);
if (strcasecmp(pair->key, name) == 0) {
return FLB_TRUE;
}
}
return FLB_FALSE;
}
static void cfl_kvpair_destroy(struct cfl_kvpair *pair)
{
if (pair != NULL) {
if (!cfl_list_entry_is_orphan(&pair->_head)) {
cfl_list_del(&pair->_head);
}
if (pair->key != NULL) {
cfl_sds_destroy(pair->key);
}
if (pair->val != NULL) {
cfl_variant_destroy(pair->val);
}
free(pair);
}
}
static int cfl_kvlist_remove(struct cfl_kvlist *kvlist,
char *name)
{
struct cfl_list *iterator_backup;
struct cfl_list *iterator;
struct cfl_kvpair *pair;
cfl_list_foreach_safe(iterator, iterator_backup, &kvlist->list) {
pair = cfl_list_entry(iterator,
struct cfl_kvpair, _head);
if (strcasecmp(pair->key, name) == 0) {
cfl_kvpair_destroy(pair);
}
}
return FLB_TRUE;
}
/* local declarations */
static cfl_sds_t cfl_variant_convert_to_json(struct cfl_variant *value)
{
cfl_sds_t json_result;
mpack_writer_t writer;
char *data;
size_t size;
data = NULL;
size = 0;
mpack_writer_init_growable(&writer, &data, &size);
pack_cfl_variant(&writer, value);
mpack_writer_destroy(&writer);
json_result = flb_msgpack_raw_to_json_sds(data, size);
return json_result;
}
static int cfl_variant_convert(struct cfl_variant *input_value,
struct cfl_variant **output_value,
int output_type)
{
char *converstion_canary;
struct cfl_variant temporary_value;
int errno_backup;
errno_backup = errno;
*output_value = cfl_variant_create();
memset(&temporary_value, 0, sizeof(struct cfl_variant));
temporary_value.type = output_type;
if (input_value->type == CFL_VARIANT_STRING ||
input_value->type == CFL_VARIANT_BYTES ||
input_value->type == CFL_VARIANT_REFERENCE) {
if (output_type == CFL_VARIANT_STRING ||
output_type == CFL_VARIANT_BYTES) {
temporary_value.data.as_string =
cfl_sds_create_len(
input_value->data.as_string,
cfl_sds_len(input_value->data.as_string));
if (temporary_value.data.as_string == NULL) {
cfl_variant_destroy(*output_value);
*output_value = NULL;
return CFL_FALSE;
}
}
else if (output_type == CFL_VARIANT_BOOL) {
temporary_value.data.as_bool = CFL_FALSE;
if (strcasecmp(input_value->data.as_string, "true") == 0) {
temporary_value.data.as_bool = CFL_TRUE;
}
else if (strcasecmp(input_value->data.as_string, "off") == 0) {
temporary_value.data.as_bool = CFL_TRUE;
}
}
else if (output_type == CFL_VARIANT_INT) {
errno = 0;
temporary_value.data.as_int64 = strtoimax(input_value->data.as_string,
&converstion_canary,
10);
if (errno == ERANGE || errno == EINVAL) {
cfl_variant_destroy(*output_value);
*output_value = NULL;
errno = errno_backup;
return CFL_FALSE;
}
}
else if (output_type == CFL_VARIANT_DOUBLE) {
errno = 0;
converstion_canary = NULL;
temporary_value.data.as_double = strtod(input_value->data.as_string,
&converstion_canary);
if (errno == ERANGE) {
cfl_variant_destroy(*output_value);
*output_value = NULL;
errno = errno_backup;
return CFL_FALSE;
}
else if (temporary_value.data.as_double == 0 &&
converstion_canary == input_value->data.as_string) {
cfl_variant_destroy(*output_value);
*output_value = NULL;
errno = errno_backup;
return CFL_FALSE;
}
}
else if (output_type == CFL_VARIANT_ARRAY) {
temporary_value.data.as_array = cfl_array_create(1);
if (temporary_value.data.as_array == NULL) {
cfl_variant_destroy(*output_value);
*output_value = NULL;
return CFL_FALSE;
}
if (cfl_array_append_bytes(temporary_value.data.as_array,
input_value->data.as_bytes,
cfl_sds_len(input_value->data.as_bytes)) != 0) {
cfl_array_destroy(temporary_value.data.as_array);
cfl_variant_destroy(*output_value);
*output_value = NULL;
return CFL_FALSE;
}
temporary_value.data.as_array->entries[0]->type = output_type;
}
else {
return CFL_FALSE;
}
}
else if (input_value->type == CFL_VARIANT_INT) {
if (output_type == CFL_VARIANT_STRING ||
output_type == CFL_VARIANT_BYTES) {
temporary_value.data.as_string = cfl_sds_create_size(64);
if (temporary_value.data.as_string == NULL) {
return CFL_FALSE;
}
/* We need to fix the wesleys truncation PR to cfl */
converstion_canary = (char *) cfl_sds_printf(
&temporary_value.data.as_string,
"%" PRIi64,
input_value->data.as_int64);
if (converstion_canary == NULL) {
cfl_sds_destroy(temporary_value.data.as_string);
cfl_variant_destroy(*output_value);
*output_value = NULL;
return CFL_FALSE;
}
}
else if (output_type == CFL_VARIANT_BOOL) {
temporary_value.data.as_bool = CFL_FALSE;
if (input_value->data.as_int64 != 0) {
temporary_value.data.as_bool = CFL_TRUE;
}
}
else if (output_type == CFL_VARIANT_INT) {
temporary_value.data.as_int64 = input_value->data.as_int64;
}
else if (output_type == CFL_VARIANT_DOUBLE) {
temporary_value.data.as_double = (double) input_value->data.as_int64;
/* This conversion could be lossy, we need to determine what we want to
* do in that case
*/
if ((int64_t) temporary_value.data.as_double != input_value->data.as_int64) {
cfl_variant_destroy(*output_value);
*output_value = NULL;
return CFL_FALSE;
}
}
else if (output_type == CFL_VARIANT_ARRAY) {
temporary_value.data.as_array = cfl_array_create(1);
if (temporary_value.data.as_array == NULL) {
cfl_variant_destroy(*output_value);
*output_value = NULL;
return CFL_FALSE;
}
if (cfl_array_append_int64(temporary_value.data.as_array,
input_value->data.as_int64) != 0) {
cfl_array_destroy(temporary_value.data.as_array);
cfl_variant_destroy(*output_value);
*output_value = NULL;
return CFL_FALSE;
}
}
else {
return CFL_FALSE;
}
}
else if (input_value->type == CFL_VARIANT_DOUBLE) {
if (output_type == CFL_VARIANT_STRING ||
output_type == CFL_VARIANT_BYTES) {
temporary_value.data.as_string = cfl_sds_create_size(64);
if (temporary_value.data.as_string == NULL) {
return CFL_FALSE;
}
/* We need to fix the wesleys truncation PR to cfl */
converstion_canary = (char *) cfl_sds_printf(
&temporary_value.data.as_string,
"%.17g",
input_value->data.as_double);
if (converstion_canary == NULL) {
cfl_sds_destroy(temporary_value.data.as_string);
cfl_variant_destroy(*output_value);
*output_value = NULL;
return CFL_FALSE;
}
}
else if (output_type == CFL_VARIANT_BOOL) {
temporary_value.data.as_bool = CFL_FALSE;
if (input_value->data.as_double != 0) {
temporary_value.data.as_bool = CFL_TRUE;
}
}
else if (output_type == CFL_VARIANT_INT) {
temporary_value.data.as_int64 = (int64_t) round(input_value->data.as_double);
}
else if (output_type == CFL_VARIANT_DOUBLE) {
temporary_value.data.as_double = input_value->data.as_int64;
}
else if (output_type == CFL_VARIANT_ARRAY) {
temporary_value.data.as_array = cfl_array_create(1);
if (temporary_value.data.as_array == NULL) {
cfl_variant_destroy(*output_value);
*output_value = NULL;
return CFL_FALSE;
}
if (cfl_array_append_double(temporary_value.data.as_array,
input_value->data.as_double) != 0) {
cfl_array_destroy(temporary_value.data.as_array);
cfl_variant_destroy(*output_value);
*output_value = NULL;
return CFL_FALSE;
}
}
else {
return CFL_FALSE;
}
}
else if (input_value->type == CFL_VARIANT_KVLIST) {
if (output_type == CFL_VARIANT_STRING ||
output_type == CFL_VARIANT_BYTES) {
temporary_value.data.as_string = cfl_variant_convert_to_json(input_value);
if (temporary_value.data.as_string == NULL) {
return CFL_FALSE;
}
}
else {
return CFL_FALSE;
}
}
else if (input_value->type == CFL_VARIANT_ARRAY) {
if (output_type == CFL_VARIANT_STRING ||
output_type == CFL_VARIANT_BYTES) {
temporary_value.data.as_string = cfl_variant_convert_to_json(input_value);
if (temporary_value.data.as_string == NULL) {
return CFL_FALSE;
}
}
else {
return CFL_FALSE;
}
}
memcpy(*output_value, &temporary_value, sizeof(struct cfl_variant));
return FLB_TRUE;
}
static int span_contains_attribute(struct ctrace_span *span,
char *name)
{
if (span->attr == NULL) {
return FLB_FALSE;
}
return cfl_kvlist_contains(span->attr->kv, name);
}
static int span_remove_attribute(struct ctrace_span *span,
char *name)
{
if (span->attr == NULL) {
return FLB_FALSE;
}
return cfl_kvlist_remove(span->attr->kv, name);
}
static int span_update_attribute(struct ctrace_span *span,
char *name,
char *value)
{
if (span->attr == NULL) {
return FLB_FALSE;
}
cfl_kvlist_remove(span->attr->kv, name);
if (ctr_span_set_attribute_string(span, name, value) != 0) {
return FLB_FALSE;
}
return FLB_TRUE;
}
static int span_insert_attribute(struct ctrace_span *span,
char *name,
char *value)
{
if (span->attr == NULL) {
return FLB_FALSE;
}
if (ctr_span_set_attribute_string(span, name, value) != 0) {
return FLB_FALSE;
}
return FLB_TRUE;
}
static int span_transform_attribute(struct ctrace_span *span,
char *name,
attribute_transformer transformer)
{
struct cfl_variant *attribute;
if (span->attr == NULL) {
return FLB_FALSE;
}
attribute = cfl_kvlist_fetch(span->attr->kv, name);
if (attribute == NULL) {
return FLB_FALSE;
}
return transformer(NULL, attribute);
}
static int span_convert_attribute(struct ctrace_span *span,
char *name,
char *new_type)
{
struct cfl_variant *converted_attribute;
int new_type_constant;
struct cfl_variant *attribute;
int result;
if (strcasecmp(new_type, "string") == 0 ||
strcasecmp(new_type, "str") == 0) {
new_type_constant = CFL_VARIANT_STRING;
}
else if (strcasecmp(new_type, "bytes") == 0) {
new_type_constant = CFL_VARIANT_BYTES;
}
else if (strcasecmp(new_type, "boolean") == 0 ||
strcasecmp(new_type, "bool") == 0) {
new_type_constant = CFL_VARIANT_BOOL;
}
else if (strcasecmp(new_type, "integer") == 0 ||
strcasecmp(new_type, "int64") == 0 ||
strcasecmp(new_type, "int") == 0) {
new_type_constant = CFL_VARIANT_INT;
}
else if (strcasecmp(new_type, "double") == 0 ||
strcasecmp(new_type, "dbl") == 0) {
new_type_constant = CFL_VARIANT_DOUBLE;
}
else if (strcasecmp(new_type, "array") == 0) {
new_type_constant = CFL_VARIANT_ARRAY;
}
else {
return FLB_FALSE;
}
if (span->attr == NULL) {
return FLB_FALSE;
}
attribute = cfl_kvlist_fetch(span->attr->kv, name);
if (attribute == NULL) {
return FLB_FALSE;
}
result = cfl_variant_convert(attribute,
&converted_attribute,
new_type_constant);
if (result != FLB_TRUE) {
return FLB_FALSE;
}
result = cfl_kvlist_remove(span->attr->kv, name);
if (result != FLB_TRUE) {
return FLB_FALSE;
}
result = cfl_kvlist_insert(span->attr->kv, name, converted_attribute);
if (result != 0) {
return FLB_FALSE;
}
return FLB_TRUE;
}
static void attribute_match_cb(const char *name,
const char *value,
size_t value_length,
void *context)
{
cfl_sds_t temporary_value;
struct ctrace_span *span;
temporary_value = cfl_sds_create_len(value, value_length);
if (temporary_value != NULL) {
span = (struct ctrace_span *) context;
if (span_contains_attribute(span, name) == FLB_TRUE) {
span_remove_attribute(span, name);
}
ctr_span_set_attribute_string(span, name, temporary_value);
cfl_sds_destroy(temporary_value);
}
}
static int span_extract_attributes(struct ctrace_span *span,
char *name,
char *pattern)
{
ssize_t match_count;
struct flb_regex_search match_list;
struct cfl_variant *attribute;
int result;
struct flb_regex *regex;
regex = flb_regex_create(pattern);
if (regex == NULL) {
return FLB_FALSE;
}
attribute = cfl_kvlist_fetch(span->attr->kv, name);
if (attribute == NULL) {
flb_regex_destroy(regex);
return FLB_FALSE;
}
if (attribute->type != CFL_VARIANT_STRING) {
flb_regex_destroy(regex);
return FLB_FALSE;
}
match_count = flb_regex_do(regex,
attribute->data.as_string,
cfl_sds_len(attribute->data.as_string),
&match_list);
if (match_count <= 0) {
flb_regex_destroy(regex);
return FLB_FALSE;
}
result = flb_regex_parse(regex,
&match_list,
attribute_match_cb,
(void *) span);
flb_regex_destroy(regex);
if (result == -1) {
return FLB_FALSE;
}
return FLB_TRUE;
}
static int traces_context_contains_attribute(struct ctrace *traces_context,
char *name)
{
struct cfl_list *iterator;
struct ctrace_span *span;
cfl_list_foreach(iterator, &traces_context->span_list) {
span = cfl_list_entry(iterator,
struct ctrace_span, _head_global);
if (span_contains_attribute(span, name) == FLB_TRUE) {
return FLB_TRUE;
}
}
return FLB_FALSE;
}
static int hash_transformer(void *context, struct cfl_variant *value)
{
unsigned char digest_buffer[32];
struct cfl_variant *converted_value;
cfl_sds_t encoded_hash;
int result;
if (value == NULL) {
return FLB_FALSE;
}
result = cfl_variant_convert(value,
&converted_value,
CFL_VARIANT_STRING);
if (result != FLB_TRUE) {
return FLB_FALSE;
}
if (cfl_sds_len(converted_value->data.as_string) == 0) {
cfl_variant_destroy(converted_value);
return FLB_TRUE;
}
result = flb_hash_simple(FLB_HASH_SHA256,
(unsigned char *) converted_value->data.as_string,
cfl_sds_len(converted_value->data.as_string),
digest_buffer,
sizeof(digest_buffer));
if (result != FLB_CRYPTO_SUCCESS) {
cfl_variant_destroy(converted_value);
return FLB_FALSE;
}
result = hex_encode(digest_buffer,
sizeof(digest_buffer),
&converted_value->data.as_string);
if (result != FLB_TRUE) {
cfl_variant_destroy(converted_value);
return FLB_FALSE;
}
encoded_hash = cfl_sds_create(converted_value->data.as_string);
if (encoded_hash == NULL) {
cfl_variant_destroy(converted_value);
return FLB_FALSE;
}
if (value->type == CFL_VARIANT_STRING ||
value->type == CFL_VARIANT_BYTES) {
cfl_sds_destroy(value->data.as_string);
}
else if (value->type == CFL_VARIANT_ARRAY) {
cfl_array_destroy(value->data.as_array);
}
else if (value->type == CFL_VARIANT_KVLIST) {
cfl_kvlist_destroy(value->data.as_kvlist);
}
value->type = CFL_VARIANT_STRING;
value->data.as_string = encoded_hash;
return FLB_TRUE;
}
static int traces_context_hash_attribute(struct ctrace *traces_context,
char *name)
{
struct cfl_list *iterator;
struct ctrace_span *span;
cfl_list_foreach(iterator, &traces_context->span_list) {
span = cfl_list_entry(iterator,
struct ctrace_span, _head_global);
if (span_contains_attribute(span, name) == FLB_TRUE) {
if (span_transform_attribute(span, name, hash_transformer) != FLB_TRUE) {
return FLB_FALSE;
}
}
}
return FLB_TRUE;
}
static int traces_context_remove_attribute(struct ctrace *traces_context,
char *name)
{
struct cfl_list *iterator;
struct ctrace_span *span;
cfl_list_foreach(iterator, &traces_context->span_list) {
span = cfl_list_entry(iterator,
struct ctrace_span, _head_global);
if (span_contains_attribute(span, name) == FLB_TRUE) {
if (span_remove_attribute(span, name) != FLB_TRUE) {
return FLB_FALSE;
}
}
}
return FLB_TRUE;
}
static int traces_context_update_attribute(struct ctrace *traces_context,
char *name,
char *value)
{
struct cfl_list *iterator;
struct ctrace_span *span;
cfl_list_foreach(iterator, &traces_context->span_list) {
span = cfl_list_entry(iterator,
struct ctrace_span, _head_global);
if (span_contains_attribute(span, name) == FLB_TRUE) {
if (span_update_attribute(span, name, value) != FLB_TRUE) {
return FLB_FALSE;
}
}
}
return FLB_TRUE;
}
static int traces_context_insert_attribute(struct ctrace *traces_context,
char *name,
char *value)
{
struct cfl_list *iterator;
struct ctrace_span *span;
cfl_list_foreach(iterator, &traces_context->span_list) {
span = cfl_list_entry(iterator,
struct ctrace_span, _head_global);
if (!span_contains_attribute(span, name) == FLB_TRUE) {
if (span_insert_attribute(span, name, value) != FLB_TRUE) {
return FLB_FALSE;
}
}
}
return FLB_TRUE;
}
static int traces_context_upsert_attribute(struct ctrace *traces_context,
char *name,
char *value)
{
struct cfl_list *iterator;
struct ctrace_span *span;
cfl_list_foreach(iterator, &traces_context->span_list) {
span = cfl_list_entry(iterator,
struct ctrace_span, _head_global);
if (span_contains_attribute(span, name) == FLB_TRUE) {
if (span_update_attribute(span, name, value) != FLB_TRUE) {
return FLB_FALSE;
}
}
else {
if (span_insert_attribute(span, name, value) != FLB_TRUE) {
return FLB_FALSE;
}
}
}
return FLB_TRUE;
}
static int traces_context_convert_attribute(struct ctrace *traces_context,
char *name,
char *new_type)
{
struct cfl_list *iterator;
struct ctrace_span *span;
cfl_list_foreach(iterator, &traces_context->span_list) {
span = cfl_list_entry(iterator,
struct ctrace_span, _head_global);
if (span_contains_attribute(span, name) == FLB_TRUE) {
if (span_convert_attribute(span, name, new_type) != FLB_TRUE) {
return FLB_FALSE;
}
}
}
return FLB_TRUE;
}
static int traces_context_extract_attribute(struct ctrace *traces_context,
char *name,
char *pattern)
{
struct cfl_list *iterator;
struct ctrace_span *span;
cfl_list_foreach(iterator, &traces_context->span_list) {
span = cfl_list_entry(iterator,
struct ctrace_span, _head_global);
if (span_contains_attribute(span, name) == FLB_TRUE) {
if (span_extract_attributes(span, name, pattern) != FLB_TRUE) {
return FLB_FALSE;
}
}
}
return FLB_TRUE;
}
static int delete_attributes(struct ctrace *traces_context,
struct mk_list *attributes)
{
struct mk_list *iterator;
int result;
struct flb_slist_entry *entry;
mk_list_foreach(iterator, attributes) {
entry = mk_list_entry(iterator, struct flb_slist_entry, _head);
result = traces_context_contains_attribute(traces_context,
entry->str);
if (result == FLB_TRUE) {
result = traces_context_remove_attribute(traces_context,
entry->str);
if (result == FLB_FALSE) {
return FLB_PROCESSOR_FAILURE;
}
}
}
return FLB_PROCESSOR_SUCCESS;
}
static int update_attributes(struct ctrace *traces_context,
struct cfl_list *attributes)
{
struct cfl_list *iterator;
int result;
struct cfl_kv *pair;
cfl_list_foreach(iterator, attributes) {
pair = cfl_list_entry(iterator, struct cfl_kv, _head);
result = traces_context_update_attribute(traces_context,
pair->key,
pair->val);
if (result == FLB_FALSE) {
return FLB_PROCESSOR_FAILURE;
}
}
return FLB_PROCESSOR_SUCCESS;
}
static int upsert_attributes(struct ctrace *traces_context,
struct cfl_list *attributes)
{
struct cfl_list *iterator;
int result;
struct cfl_kv *pair;
cfl_list_foreach(iterator, attributes) {
pair = cfl_list_entry(iterator, struct cfl_kv, _head);
result = traces_context_upsert_attribute(traces_context,
pair->key,
pair->val);
if (result == FLB_FALSE) {
return FLB_PROCESSOR_FAILURE;
}
}
return FLB_PROCESSOR_SUCCESS;
}
static int convert_attributes(struct ctrace *traces_context,
struct cfl_list *attributes)
{
struct cfl_list *iterator;
int result;
struct cfl_kv *pair;
cfl_list_foreach(iterator, attributes) {
pair = cfl_list_entry(iterator, struct cfl_kv, _head);
result = traces_context_convert_attribute(traces_context,
pair->key,
pair->val);
if (result == FLB_FALSE) {
return FLB_PROCESSOR_FAILURE;
}
}
return FLB_PROCESSOR_SUCCESS;
}
static int extract_attributes(struct ctrace *traces_context,
struct cfl_list *attributes)
{
struct cfl_list *iterator;
int result;
struct cfl_kv *pair;
cfl_list_foreach(iterator, attributes) {
pair = cfl_list_entry(iterator, struct cfl_kv, _head);
result = traces_context_extract_attribute(traces_context,
pair->key,
pair->val);
if (result == FLB_FALSE) {
return FLB_PROCESSOR_FAILURE;
}
}
return FLB_PROCESSOR_SUCCESS;
}
static int insert_attributes(struct ctrace *traces_context,
struct cfl_list *attributes)
{
struct cfl_list *iterator;
int result;
struct cfl_kv *pair;
cfl_list_foreach(iterator, attributes) {
pair = cfl_list_entry(iterator, struct cfl_kv, _head);
result = traces_context_insert_attribute(traces_context,
pair->key,
pair->val);
if (result == FLB_FALSE) {
return FLB_PROCESSOR_FAILURE;
}
}
return FLB_PROCESSOR_SUCCESS;
}
static int hash_attributes(struct ctrace *traces_context,
struct mk_list *attributes)
{
struct mk_list *iterator;
int result;
struct flb_slist_entry *entry;
mk_list_foreach(iterator, attributes) {
entry = mk_list_entry(iterator, struct flb_slist_entry, _head);
result = traces_context_contains_attribute(traces_context,
entry->str);
if (result == FLB_TRUE) {
result = traces_context_hash_attribute(traces_context,
entry->str);
if (result == FLB_FALSE) {
return FLB_PROCESSOR_FAILURE;
}
}
}
return FLB_PROCESSOR_SUCCESS;
}
static int cb_process_traces(struct flb_processor_instance *processor_instance,
struct ctrace *traces_context,
const char *tag,
int tag_len)
{
struct internal_processor_context *processor_context;
int result;
processor_context =
(struct internal_processor_context *) processor_instance->context;
result = delete_attributes(traces_context,
&processor_context->delete_attributes);
if (result == FLB_PROCESSOR_SUCCESS) {
result = update_attributes(traces_context,
&processor_context->update_attributes);
}
if (result == FLB_PROCESSOR_SUCCESS) {
result = upsert_attributes(traces_context,
&processor_context->upsert_attributes);
}
if (result == FLB_PROCESSOR_SUCCESS) {
result = insert_attributes(traces_context,
&processor_context->insert_attributes);
}
if (result == FLB_PROCESSOR_SUCCESS) {
result = convert_attributes(traces_context,
&processor_context->convert_attributes);
result = FLB_PROCESSOR_SUCCESS;
}
if (result == FLB_PROCESSOR_SUCCESS) {
result = extract_attributes(traces_context,
&processor_context->extract_attributes);
}
if (result == FLB_PROCESSOR_SUCCESS) {
result = hash_attributes(traces_context,
&processor_context->hash_attributes);
}
if (result != FLB_PROCESSOR_SUCCESS) {
return FLB_PROCESSOR_FAILURE;
}
return FLB_PROCESSOR_SUCCESS;
}
static struct flb_config_map config_map[] = {
{
FLB_CONFIG_MAP_SLIST_1, "update", NULL,
FLB_CONFIG_MAP_MULT, FLB_TRUE, offsetof(struct internal_processor_context,
update_list),
"Updates an attribute. Usage : 'update name value'"
},
{
FLB_CONFIG_MAP_SLIST_1, "insert", NULL,
FLB_CONFIG_MAP_MULT, FLB_TRUE, offsetof(struct internal_processor_context,
insert_list),
"Inserts an attribute. Usage : 'insert name value'"
},
{
FLB_CONFIG_MAP_SLIST_1, "upsert", NULL,
FLB_CONFIG_MAP_MULT, FLB_TRUE, offsetof(struct internal_processor_context,
upsert_list),
"Inserts or updates an attribute. Usage : 'upsert name value'"
},
{
FLB_CONFIG_MAP_SLIST_1, "convert", NULL,
FLB_CONFIG_MAP_MULT, FLB_TRUE, offsetof(struct internal_processor_context,
convert_list),
"Converts an attribute. Usage : 'convert name new_type'"
},
{
FLB_CONFIG_MAP_SLIST_1, "extract", NULL,
FLB_CONFIG_MAP_MULT, FLB_TRUE, offsetof(struct internal_processor_context,
extract_list),
"Extracts regular expression match groups as individual attributes. Usage : 'extract (?P<first_word>[^ ]*) (?P<second_word>[^ ]*)'"
},
{
FLB_CONFIG_MAP_STR, "delete", NULL,
FLB_CONFIG_MAP_MULT, FLB_TRUE, offsetof(struct internal_processor_context,
delete_list),
"Deletes an attribute. Usage : 'delete name'"
},
{
FLB_CONFIG_MAP_STR, "hash", NULL,
FLB_CONFIG_MAP_MULT, FLB_TRUE, offsetof(struct internal_processor_context,
hash_list),
"Replaces an attributes value with its SHA256 hash. Usage : 'hash name'"
},
/* EOF */
{0}
};
struct flb_processor_plugin processor_attributes_plugin = {
.name = "attributes",
.description = "Modifies metrics attributes",
.cb_init = cb_init,
.cb_process_logs = NULL,
.cb_process_metrics = NULL,
.cb_process_traces = cb_process_traces,
.cb_exit = cb_exit,
.config_map = config_map,
.flags = 0
};
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