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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* Fluent Bit
* ==========
* Copyright (C) 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_input_plugin.h>
#include <fluent-bit/flb_config.h>
#include <fluent-bit/flb_config_map.h>
#include <fluent-bit/flb_error.h>
#include <fluent-bit/flb_pack.h>
#include "we.h"
#include "we_logical_disk.h"
#include "we_util.h"
#include "we_metric.h"
#include "we_perflib.h"
struct we_perflib_metric_source logical_disk_metric_sources[] = {
WE_PERFLIB_METRIC_SOURCE("requests_queued",
"Current Disk Queue Length",
NULL),
WE_PERFLIB_METRIC_SOURCE("read_bytes_total",
"Disk Read Bytes/sec",
NULL),
WE_PERFLIB_METRIC_SOURCE("read_total",
"Disk Reads/sec",
NULL),
WE_PERFLIB_METRIC_SOURCE("write_bytes_total",
"Disk Write Bytes/sec",
NULL),
WE_PERFLIB_METRIC_SOURCE("write_total",
"Disk Writes/sec",
NULL),
WE_PERFLIB_METRIC_SOURCE("read_seconds_total",
"% Disk Read Time",
NULL),
WE_PERFLIB_METRIC_SOURCE("write_seconds_total",
"% Disk Write Time",
NULL),
WE_PERFLIB_METRIC_SOURCE("free_megabytes",
"Free Megabytes",
NULL),
/* FIXME: Prometheus windows exporter uses '% Free Space_Base' as
* query for size_(mega)bytes metrics, but it does not work. */
/* WE_PERFLIB_METRIC_SOURCE("size_megabytes", */
/* "% Free Space_Base", */
/* NULL), */
WE_PERFLIB_METRIC_SOURCE("idle_seconds_total",
"% Idle Time",
NULL),
WE_PERFLIB_METRIC_SOURCE("split_ios_total",
"Split IO/Sec",
NULL),
WE_PERFLIB_METRIC_SOURCE("read_latency_seconds_total",
"Avg. Disk sec/Read",
NULL),
WE_PERFLIB_METRIC_SOURCE("write_latency_seconds_total",
"Avg. Disk sec/Write",
NULL),
WE_PERFLIB_METRIC_SOURCE("read_write_latency_seconds_total",
"Avg. Disk sec/Transfer",
NULL),
WE_PERFLIB_TERMINATOR_SOURCE()
};
struct we_perflib_metric_spec logical_disk_metric_specs[] = {
WE_PERFLIB_GAUGE_SPEC("requests_queued",
"Number of queued requests on the disk",
"volume"),
WE_PERFLIB_COUNTER_SPEC("read_bytes_total",
"Number of read bytes from the disk",
"volume"),
WE_PERFLIB_COUNTER_SPEC("read_total",
"Number of read from the disk",
"volume"),
WE_PERFLIB_COUNTER_SPEC("write_bytes_total",
"Number of write bytes to the disk",
"volume"),
WE_PERFLIB_COUNTER_SPEC("write_total",
"Number of write from to disk",
"volume"),
WE_PERFLIB_COUNTER_SPEC("read_seconds_total",
"Total amount of reading time from the disk",
"volume"),
WE_PERFLIB_COUNTER_SPEC("write_seconds_total",
"Total amount of writeing time to the disk",
"volume"),
WE_PERFLIB_GAUGE_SPEC("free_megabytes",
"Free megabytes on the disk",
"volume"),
/* WE_PERFLIB_COUNTER_SPEC("size_megabytes", */
/* "Total amount of free megabytes on the disk", */
/* "volume"), */
WE_PERFLIB_COUNTER_SPEC("idle_seconds_total",
"Total amount of idling time on the disk",
"volume"),
WE_PERFLIB_COUNTER_SPEC("split_ios_total",
"Total amount of split I/O operations on the disk",
"volume"),
WE_PERFLIB_COUNTER_SPEC("read_latency_seconds_total",
"Average latency, in seconds, to read from the disk",
"volume"),
WE_PERFLIB_COUNTER_SPEC("write_latency_seconds_total",
"Average latency, in seconds, to write into the disk",
"volume"),
WE_PERFLIB_COUNTER_SPEC("read_write_latency_seconds_total",
"Average latency, in seconds, to transfer operations on the disk",
"volume"),
WE_PERFLIB_TERMINATOR_SPEC()
};
int we_logical_disk_init(struct flb_we *ctx)
{
struct we_perflib_metric_source *metric_sources;
int result;
ctx->logical_disk.operational = FLB_FALSE;
ctx->logical_disk.metrics = flb_hash_table_create(FLB_HASH_TABLE_EVICT_NONE, 32, 128);
if (ctx->logical_disk.metrics == NULL) {
flb_plg_error(ctx->ins, "could not create metrics hash table for logical_disk metrics");
return -1;
}
result = we_initialize_perflib_metric_specs(ctx->cmt,
ctx->logical_disk.metrics,
"windows",
"logical_disk",
&ctx->logical_disk.metric_specs,
logical_disk_metric_specs);
if (result != 0) {
flb_plg_error(ctx->ins, "could not initialize logical_disk metric specs");
return -2;
}
ctx->logical_disk.query = (char *) "LogicalDisk";
result = we_initialize_perflib_metric_sources(ctx->logical_disk.metrics,
&ctx->logical_disk.metric_sources,
logical_disk_metric_sources);
if (result != 0) {
flb_plg_error(ctx->ins, "could not initialize logical_disk metric sources");
we_deinitialize_perflib_metric_specs(ctx->logical_disk.metric_specs);
flb_free(ctx->logical_disk.metric_specs);
return -3;
}
ctx->logical_disk.operational = FLB_TRUE;
return 0;
}
int we_logical_disk_exit(struct flb_we *ctx)
{
we_deinitialize_perflib_metric_sources(ctx->logical_disk.metric_sources);
we_deinitialize_perflib_metric_specs(ctx->logical_disk.metric_specs);
flb_free(ctx->logical_disk.metric_sources);
flb_free(ctx->logical_disk.metric_specs);
ctx->logical_disk.operational = FLB_FALSE;
return 0;
}
static int logical_disk_regex_match(struct flb_regex *regex, char *instance_name)
{
if (regex == NULL) {
return 0;
}
return flb_regex_match(regex, instance_name, strlen(instance_name));
}
int we_logical_disk_instance_hook(char *instance_name, struct flb_we *ctx)
{
if (strcasestr(instance_name, "Total") != NULL) {
return 1;
}
if (logical_disk_regex_match(ctx->denying_disk_regex, instance_name) ||
!logical_disk_regex_match(ctx->allowing_disk_regex, instance_name)) {
return 1;
}
return 0;
}
int we_logical_disk_label_prepend_hook(char **label_list,
size_t label_list_size,
size_t *label_count,
struct we_perflib_metric_source *metric_source,
char *instance_name,
struct we_perflib_counter *counter)
{
if (label_count == NULL) {
return -1;
}
if (*label_count >= label_list_size) {
return -2;
}
label_list[(*label_count)++] = instance_name;
return 0;
}
int we_logical_disk_update(struct flb_we *ctx)
{
if (!ctx->logical_disk.operational) {
flb_plg_error(ctx->ins, "logical_disk collector not yet in operational state");
return -1;
}
return we_perflib_update_counters(ctx,
ctx->logical_disk.query,
ctx->logical_disk.metric_sources,
we_logical_disk_instance_hook,
we_logical_disk_label_prepend_hook);
}
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