mirror of
https://github.com/prometheus-community/windows_exporter
synced 2024-12-25 16:02:04 +00:00
136 lines
3.1 KiB
Go
136 lines
3.1 KiB
Go
//go:build windows
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package smb
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import (
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"log/slog"
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"strings"
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"github.com/alecthomas/kingpin/v2"
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"github.com/prometheus-community/windows_exporter/pkg/perflib"
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"github.com/prometheus-community/windows_exporter/pkg/types"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/yusufpapurcu/wmi"
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)
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const Name = "smb"
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type Config struct{}
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var ConfigDefaults = Config{}
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type Collector struct {
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config Config
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treeConnectCount *prometheus.Desc
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currentOpenFileCount *prometheus.Desc
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}
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func New(config *Config) *Collector {
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if config == nil {
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config = &ConfigDefaults
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}
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c := &Collector{
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config: *config,
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}
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return c
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}
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func NewWithFlags(_ *kingpin.Application) *Collector {
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return &Collector{}
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}
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func (c *Collector) GetName() string {
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return Name
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}
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func (c *Collector) GetPerfCounter(_ *slog.Logger) ([]string, error) {
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return []string{
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"SMB Server Shares",
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}, nil
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}
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func (c *Collector) Close(_ *slog.Logger) error {
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return nil
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}
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func (c *Collector) Build(_ *slog.Logger, _ *wmi.Client) error {
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// desc creates a new prometheus description
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desc := func(metricName string, description string, labels ...string) *prometheus.Desc {
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return prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, "smb", metricName),
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description,
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labels,
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nil,
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)
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}
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c.currentOpenFileCount = desc("server_shares_current_open_file_count", "Current total count open files on the SMB Server")
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c.treeConnectCount = desc("server_shares_tree_connect_count", "Count of user connections to the SMB Server")
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return nil
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}
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// Collect collects smb metrics and sends them to prometheus.
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func (c *Collector) Collect(ctx *types.ScrapeContext, logger *slog.Logger, ch chan<- prometheus.Metric) error {
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logger = logger.With(slog.String("collector", Name))
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if err := c.collectServerShares(ctx, logger, ch); err != nil {
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logger.Error("failed to collect server share metrics",
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slog.Any("err", err),
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)
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return err
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}
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return nil
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}
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// Perflib: SMB Server Shares.
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type perflibServerShares struct {
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Name string
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CurrentOpenFileCount float64 `perflib:"Current Open File Count"`
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TreeConnectCount float64 `perflib:"Tree Connect Count"`
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}
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func (c *Collector) collectServerShares(ctx *types.ScrapeContext, logger *slog.Logger, ch chan<- prometheus.Metric) error {
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logger = logger.With(slog.String("collector", Name))
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var data []perflibServerShares
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if err := perflib.UnmarshalObject(ctx.PerfObjects["SMB Server Shares"], &data, logger); err != nil {
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return err
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}
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for _, instance := range data {
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labelName := c.toLabelName(instance.Name)
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if !strings.HasSuffix(labelName, "_total") {
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continue
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}
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ch <- prometheus.MustNewConstMetric(
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c.currentOpenFileCount,
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prometheus.CounterValue,
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instance.CurrentOpenFileCount,
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)
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ch <- prometheus.MustNewConstMetric(
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c.treeConnectCount,
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prometheus.CounterValue,
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instance.TreeConnectCount,
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)
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}
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return nil
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}
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// toLabelName converts strings to lowercase and replaces all whitespaces and dots with underscores.
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func (c *Collector) toLabelName(name string) string {
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s := strings.ReplaceAll(strings.Join(strings.Fields(strings.ToLower(name)), "_"), ".", "_")
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s = strings.ReplaceAll(s, "__", "_")
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return s
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}
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