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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.
*/
#define _GNU_SOURCE
#include <fluent-bit/flb_info.h>
#include <fluent-bit/flb_input_plugin.h>
#include "ne.h"
#include "ne_utils.h"
static int filefd_configure(struct flb_ne *ctx)
{
struct cmt_gauge *g;
/* node_filefd_allocated */
g = cmt_gauge_create(ctx->cmt, "node", "filefd", "allocated",
"File descriptor statistics: allocated.",
0, NULL);
ctx->filefd_allocated = g;
/* node_filefd_maximum */
g = cmt_gauge_create(ctx->cmt, "node", "filefd", "maximum",
"File descriptor statistics: maximum.",
0, NULL);
ctx->filefd_maximum = g;
return 0;
}
static int filefd_update(struct flb_ne *ctx)
{
int ret;
int parts;
uint64_t ts;
double d_val;
struct mk_list *head;
struct mk_list list;
struct mk_list split_list;
struct flb_slist_entry *line;
struct flb_slist_entry *alloc;
struct flb_slist_entry *max;
mk_list_init(&list);
ret = ne_utils_file_read_lines(ctx->path_procfs, "/sys/fs/file-nr", &list);
if (ret == -1) {
return -1;
}
ts = cfl_time_now();
mk_list_foreach(head, &list) {
line = mk_list_entry(head, struct flb_slist_entry, _head);
mk_list_init(&split_list);
ret = flb_slist_split_string(&split_list, line->str, '\t', -1);
if (ret == -1) {
continue;
}
parts = ret;
if (parts == 0) {
flb_slist_destroy(&split_list);
continue;
}
else if (parts != 3) {
flb_plg_warn(ctx->ins, "/sys/fs/file-nr: invalid number of fields");
flb_slist_destroy(&split_list);
break;
}
/* allocated (0) */
alloc = flb_slist_entry_get(&split_list, 0);
ne_utils_str_to_double(alloc->str, &d_val);
cmt_gauge_set(ctx->filefd_allocated, ts, d_val, 0, NULL);
/* maximum (2) */
max = flb_slist_entry_get(&split_list, 2);
ne_utils_str_to_double(max->str, &d_val);
cmt_gauge_set(ctx->filefd_maximum, ts, d_val, 0, NULL);
flb_slist_destroy(&split_list);
break;
}
flb_slist_destroy(&list);
return 0;
}
int ne_filefd_init(struct flb_ne *ctx)
{
filefd_configure(ctx);
return 0;
}
int ne_filefd_update(struct flb_ne *ctx)
{
filefd_update(ctx);
return 0;
}
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