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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 stat_configure(struct flb_ne *ctx)
{
struct cmt_counter *c;
struct cmt_gauge *g;
/* node_intr_total */
c = cmt_counter_create(ctx->cmt, "node", "", "intr_total",
"Total number of interrupts serviced.",
0, NULL);
ctx->st_intr = c;
/* node_context_switches_total */
c = cmt_counter_create(ctx->cmt, "node", "", "context_switches_total",
"Total number of context switches.",
0, NULL);
ctx->st_context_switches = c;
/* node_forks_total */
c = cmt_counter_create(ctx->cmt, "node", "", "forks_total",
"Total number of forks.",
0, NULL);
ctx->st_forks = c;
/* node_boot_time_seconds */
g = cmt_gauge_create(ctx->cmt, "node", "", "boot_time_seconds",
"Node boot time, in unixtime.",
0, NULL);
ctx->st_boot_time = g;
/* node_procs_running */
g = cmt_gauge_create(ctx->cmt, "node", "", "procs_running",
"Number of processes in runnable state.",
0, NULL);
ctx->st_procs_running = g;
/* node_procs_blocked */
g = cmt_gauge_create(ctx->cmt, "node", "", "procs_blocked",
"Number of processes blocked waiting for I/O to complete.",
0, NULL);
ctx->st_procs_blocked = g;
return 0;
}
static int stat_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 *entry;
struct flb_slist_entry *s_val;
mk_list_init(&list);
ret = ne_utils_file_read_lines(ctx->path_procfs, "/stat", &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, ' ', -1);
if (ret == -1) {
continue;
}
parts = ret;
if (parts == 0) {
flb_slist_destroy(&split_list);
continue;
}
/* metric name and value */
entry = flb_slist_entry_get(&split_list, 0);
s_val = flb_slist_entry_get(&split_list, 1);
if (strcmp(entry->str, "intr") == 0) {
ne_utils_str_to_double(s_val->str, &d_val);
cmt_counter_set(ctx->st_intr, ts, d_val, 0, NULL);
}
else if (strcmp(entry->str, "ctxt") == 0) {
ne_utils_str_to_double(s_val->str, &d_val);
cmt_counter_set(ctx->st_context_switches, ts, d_val, 0, NULL);
}
else if (strcmp(entry->str, "btime") == 0) {
ne_utils_str_to_double(s_val->str, &d_val);
cmt_gauge_set(ctx->st_boot_time, ts, d_val, 0, NULL);
}
else if (strcmp(entry->str, "processes") == 0) {
ne_utils_str_to_double(s_val->str, &d_val);
cmt_counter_set(ctx->st_forks, ts, d_val, 0, NULL);
}
else if (strcmp(entry->str, "procs_running") == 0) {
ne_utils_str_to_double(s_val->str, &d_val);
cmt_gauge_set(ctx->st_procs_running, ts, d_val, 0, NULL);
}
else if (strcmp(entry->str, "procs_blocked") == 0) {
ne_utils_str_to_double(s_val->str, &d_val);
cmt_gauge_set(ctx->st_procs_blocked, ts, d_val, 0, NULL);
}
flb_slist_destroy(&split_list);
}
flb_slist_destroy(&list);
return 0;
}
int ne_stat_init(struct flb_ne *ctx)
{
stat_configure(ctx);
return 0;
}
int ne_stat_update(struct flb_ne *ctx)
{
stat_update(ctx);
return 0;
}
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