mirror of
https://github.com/prometheus/node_exporter.git
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3fb5f70b0c
Drop redundant GOOS build tags at start of file if the constraint is already specified by the filename, e.g. foo_GOOS.go or foo_GOOS_GOARCH.go, avoiding potential confusion in future. cf. https://pkg.go.dev/cmd/go#hdr-Build_constraints Signed-off-by: Daniel Swarbrick <daniel.swarbrick@gmail.com>
337 lines
11 KiB
Go
337 lines
11 KiB
Go
// Copyright 2018 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//go:build !nozfs
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// +build !nozfs
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package collector
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import (
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"strings"
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"github.com/go-kit/log"
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"github.com/illumos/go-kstat"
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"github.com/prometheus/client_golang/prometheus"
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)
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type zfsCollector struct {
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abdstatsLinearCount *prometheus.Desc
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abdstatsLinearDataSize *prometheus.Desc
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abdstatsScatterChunkWaste *prometheus.Desc
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abdstatsScatterCount *prometheus.Desc
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abdstatsScatterDataSize *prometheus.Desc
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abdstatsStructSize *prometheus.Desc
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arcstatsAnonSize *prometheus.Desc
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arcstatsC *prometheus.Desc
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arcstatsCMax *prometheus.Desc
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arcstatsCMin *prometheus.Desc
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arcstatsDataSize *prometheus.Desc
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arcstatsDemandDataHits *prometheus.Desc
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arcstatsDemandDataMisses *prometheus.Desc
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arcstatsDemandMetadataHits *prometheus.Desc
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arcstatsDemandMetadataMisses *prometheus.Desc
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arcstatsHeaderSize *prometheus.Desc
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arcstatsHits *prometheus.Desc
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arcstatsMisses *prometheus.Desc
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arcstatsMFUGhostHits *prometheus.Desc
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arcstatsMFUGhostSize *prometheus.Desc
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arcstatsMFUSize *prometheus.Desc
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arcstatsMRUGhostHits *prometheus.Desc
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arcstatsMRUGhostSize *prometheus.Desc
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arcstatsMRUSize *prometheus.Desc
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arcstatsOtherSize *prometheus.Desc
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arcstatsP *prometheus.Desc
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arcstatsSize *prometheus.Desc
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zfetchstatsHits *prometheus.Desc
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zfetchstatsMisses *prometheus.Desc
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logger log.Logger
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}
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const (
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zfsCollectorSubsystem = "zfs"
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)
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func init() {
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registerCollector("zfs", defaultEnabled, NewZfsCollector)
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}
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func NewZfsCollector(logger log.Logger) (Collector, error) {
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return &zfsCollector{
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abdstatsLinearCount: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "abdstats_linear_count_total"),
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"ZFS ARC buffer data linear count", nil, nil,
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),
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abdstatsLinearDataSize: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "abdstats_linear_data_bytes"),
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"ZFS ARC buffer data linear data size", nil, nil,
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),
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abdstatsScatterChunkWaste: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "abdstats_scatter_chunk_waste_bytes"),
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"ZFS ARC buffer data scatter chunk waste", nil, nil,
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),
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abdstatsScatterCount: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "abdstats_scatter_count_total"),
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"ZFS ARC buffer data scatter count", nil, nil,
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),
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abdstatsScatterDataSize: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "abdstats_scatter_data_bytes"),
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"ZFS ARC buffer data scatter data size", nil, nil,
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),
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abdstatsStructSize: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "abdstats_struct_bytes"),
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"ZFS ARC buffer data struct size", nil, nil,
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),
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arcstatsAnonSize: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_anon_bytes"),
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"ZFS ARC anon size", nil, nil,
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),
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arcstatsC: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_c_bytes"),
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"ZFS ARC target size", nil, nil,
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),
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arcstatsCMax: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_c_max_bytes"),
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"ZFS ARC maximum size", nil, nil,
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),
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arcstatsCMin: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_c_min_bytes"),
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"ZFS ARC minimum size", nil, nil,
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),
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arcstatsDataSize: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_data_bytes"),
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"ZFS ARC data size", nil, nil,
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),
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arcstatsDemandDataHits: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_demand_data_hits_total"),
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"ZFS ARC demand data hits", nil, nil,
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),
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arcstatsDemandDataMisses: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_demand_data_misses_total"),
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"ZFS ARC demand data misses", nil, nil,
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),
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arcstatsDemandMetadataHits: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_demand_metadata_hits_total"),
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"ZFS ARC demand metadata hits", nil, nil,
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),
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arcstatsDemandMetadataMisses: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_demand_metadata_misses_total"),
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"ZFS ARC demand metadata misses", nil, nil,
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),
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arcstatsHeaderSize: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_hdr_bytes"),
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"ZFS ARC header size", nil, nil,
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),
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arcstatsHits: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_hits_total"),
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"ZFS ARC hits", nil, nil,
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),
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arcstatsMisses: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_misses_total"),
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"ZFS ARC misses", nil, nil,
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),
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arcstatsMFUGhostHits: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_mfu_ghost_hits_total"),
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"ZFS ARC MFU ghost hits", nil, nil,
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),
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arcstatsMFUGhostSize: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_mfu_ghost_size"),
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"ZFS ARC MFU ghost size", nil, nil,
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),
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arcstatsMFUSize: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_mfu_bytes"),
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"ZFS ARC MFU size", nil, nil,
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),
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arcstatsMRUGhostHits: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_mru_ghost_hits_total"),
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"ZFS ARC MRU ghost hits", nil, nil,
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),
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arcstatsMRUGhostSize: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_mru_ghost_bytes"),
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"ZFS ARC MRU ghost size", nil, nil,
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),
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arcstatsMRUSize: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_mru_bytes"),
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"ZFS ARC MRU size", nil, nil,
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),
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arcstatsOtherSize: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_other_bytes"),
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"ZFS ARC other size", nil, nil,
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),
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arcstatsP: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_p_bytes"),
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"ZFS ARC MRU target size", nil, nil,
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),
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arcstatsSize: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_size_bytes"),
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"ZFS ARC size", nil, nil,
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),
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zfetchstatsHits: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "zfetchstats_hits_total"),
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"ZFS cache fetch hits", nil, nil,
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),
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zfetchstatsMisses: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "zfetchstats_misses_total"),
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"ZFS cache fetch misses", nil, nil,
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),
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logger: logger,
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}, nil
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}
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func (c *zfsCollector) updateZfsAbdStats(ch chan<- prometheus.Metric) error {
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var metricType prometheus.ValueType
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tok, err := kstat.Open()
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if err != nil {
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return err
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}
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defer tok.Close()
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ksZFSInfo, err := tok.Lookup("zfs", 0, "abdstats")
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if err != nil {
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return err
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}
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for k, v := range map[string]*prometheus.Desc{
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"linear_cnt": c.abdstatsLinearCount,
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"linear_data_size": c.abdstatsLinearDataSize,
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"scatter_chunk_waste": c.abdstatsScatterChunkWaste,
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"scatter_cnt": c.abdstatsScatterCount,
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"scatter_data_size": c.abdstatsScatterDataSize,
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"struct_size": c.abdstatsStructSize,
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} {
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ksZFSInfoValue, err := ksZFSInfo.GetNamed(k)
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if err != nil {
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return err
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}
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if strings.HasSuffix(k, "_cnt") {
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metricType = prometheus.CounterValue
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} else {
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metricType = prometheus.GaugeValue
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}
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ch <- prometheus.MustNewConstMetric(
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v,
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metricType,
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float64(ksZFSInfoValue.UintVal),
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)
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}
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return nil
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}
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func (c *zfsCollector) updateZfsArcStats(ch chan<- prometheus.Metric) error {
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var metricType prometheus.ValueType
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tok, err := kstat.Open()
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if err != nil {
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return err
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}
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defer tok.Close()
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ksZFSInfo, err := tok.Lookup("zfs", 0, "arcstats")
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if err != nil {
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return err
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}
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for k, v := range map[string]*prometheus.Desc{
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"anon_size": c.arcstatsAnonSize,
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"c": c.arcstatsC,
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"c_max": c.arcstatsCMax,
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"c_min": c.arcstatsCMin,
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"data_size": c.arcstatsDataSize,
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"demand_data_hits": c.arcstatsDemandDataHits,
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"demand_data_misses": c.arcstatsDemandDataMisses,
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"demand_metadata_hits": c.arcstatsDemandMetadataHits,
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"demand_metadata_misses": c.arcstatsDemandMetadataMisses,
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"hdr_size": c.arcstatsHeaderSize,
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"hits": c.arcstatsHits,
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"misses": c.arcstatsMisses,
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"mfu_ghost_hits": c.arcstatsMFUGhostHits,
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"mfu_ghost_size": c.arcstatsMFUGhostSize,
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"mfu_size": c.arcstatsMFUSize,
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"mru_ghost_hits": c.arcstatsMRUGhostHits,
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"mru_ghost_size": c.arcstatsMRUGhostSize,
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"mru_size": c.arcstatsMRUSize,
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"other_size": c.arcstatsOtherSize,
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"p": c.arcstatsP,
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"size": c.arcstatsSize,
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} {
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ksZFSInfoValue, err := ksZFSInfo.GetNamed(k)
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if err != nil {
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return err
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}
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if strings.HasSuffix(k, "_hits") || strings.HasSuffix(k, "_misses") {
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metricType = prometheus.CounterValue
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} else {
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metricType = prometheus.GaugeValue
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}
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ch <- prometheus.MustNewConstMetric(
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v,
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metricType,
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float64(ksZFSInfoValue.UintVal),
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)
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}
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return nil
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}
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func (c *zfsCollector) updateZfsFetchStats(ch chan<- prometheus.Metric) error {
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tok, err := kstat.Open()
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if err != nil {
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return err
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}
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defer tok.Close()
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ksZFSInfo, err := tok.Lookup("zfs", 0, "zfetchstats")
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if err != nil {
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return err
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}
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for k, v := range map[string]*prometheus.Desc{
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"hits": c.zfetchstatsHits,
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"misses": c.zfetchstatsMisses,
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} {
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ksZFSInfoValue, err := ksZFSInfo.GetNamed(k)
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if err != nil {
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return err
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}
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ch <- prometheus.MustNewConstMetric(
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v,
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prometheus.CounterValue,
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float64(ksZFSInfoValue.UintVal),
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)
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}
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return nil
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}
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func (c *zfsCollector) Update(ch chan<- prometheus.Metric) error {
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if err := c.updateZfsAbdStats(ch); err != nil {
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return err
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}
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if err := c.updateZfsArcStats(ch); err != nil {
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return err
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}
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if err := c.updateZfsFetchStats(ch); err != nil {
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return err
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}
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return nil
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}
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