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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,28 @@ | ||
| # printer collector | ||
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| The printer collector exposes metrics about printers and their jobs. | ||
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| | | | | ||
| |---------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ||
| | Metric name prefix | `printer` | | ||
| | Data source | WMI | | ||
| | Classes | [Win32_Printer](https://learn.microsoft.com/en-us/windows/win32/cimwin32prov/win32-printer) <br> [Win32_PrintJob](https://learn.microsoft.com/en-us/windows/win32/cimwin32prov/win32-printjob) | | ||
| | Enabled by default? | false | | ||
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| ## Flags | ||
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| ### `--collector.printer.include` | ||
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| If given, a printer needs to match the include regexp in order for the corresponding printer metrics to be reported | ||
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| ### `--collector.printer.exclude` | ||
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| If given, a printer needs to *not* match the exclude regexp in order for the corresponding printer metrics to be reported | ||
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| ## Metrics | ||
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| Name | Description | Type | Labels | ||
| -----|-------------|---------|------- | ||
| `windows_printer_status` | Status of the printer at the time the performance data is collected | counter | `printer`, `status` | ||
| `windows_printer_job_count` | Number of jobs processed by the printer since the last reset | gauge | `printer` | ||
| `windows_printer_job_status` | A counter of printer jobs by status | gauge | `printer`, `status` |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,223 @@ | ||
| //go:build windows | ||
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| package printer | ||
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| import ( | ||
| "fmt" | ||
| "regexp" | ||
| "strings" | ||
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| "github.com/alecthomas/kingpin/v2" | ||
| "github.com/go-kit/log" | ||
| "github.com/go-kit/log/level" | ||
| "github.com/prometheus/client_golang/prometheus" | ||
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| "github.com/prometheus-community/windows_exporter/pkg/types" | ||
| "github.com/prometheus-community/windows_exporter/pkg/wmi" | ||
| ) | ||
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| const ( | ||
| Name = "printer" | ||
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| FlagPrinterInclude = "collector.printer.include" | ||
| FlagPrinterExclude = "collector.printer.exclude" | ||
| ) | ||
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| // printerStatusMap source: https://learn.microsoft.com/en-us/windows/win32/cimwin32prov/win32-printer#:~:text=Power%20Save-,PrinterStatus,Offline%20(7),-PrintJobDataType | ||
| var printerStatusMap = map[uint16]string{ | ||
| 1: "Other", | ||
| 2: "Unknown", | ||
| 3: "Idle", | ||
| 4: "Printing", | ||
| 5: "Warmup", | ||
| 6: "Stopped Printing", | ||
| 7: "Offline", | ||
| } | ||
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| type Config struct { | ||
| printerInclude string `yaml:"printer_include"` | ||
| printerExclude string `yaml:"printer_exclude"` | ||
| } | ||
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| var ConfigDefaults = Config{ | ||
| printerInclude: ".+", | ||
| printerExclude: "", | ||
| } | ||
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| type collector struct { | ||
| logger log.Logger | ||
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| printerInclude *string | ||
| printerExclude *string | ||
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| printerStatus *prometheus.Desc | ||
| printerJobStatus *prometheus.Desc | ||
| printerJobCount *prometheus.Desc | ||
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| printerIncludePattern *regexp.Regexp | ||
| printerExcludePattern *regexp.Regexp | ||
| } | ||
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| func New(logger log.Logger, config *Config) types.Collector { | ||
| if config == nil { | ||
| config = &ConfigDefaults | ||
| } | ||
| c := &collector{ | ||
| printerInclude: &config.printerInclude, | ||
| printerExclude: &config.printerExclude, | ||
| } | ||
| c.SetLogger(logger) | ||
| return c | ||
| } | ||
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| func NewWithFlags(app *kingpin.Application) types.Collector { | ||
| c := &collector{ | ||
| printerInclude: app.Flag( | ||
| FlagPrinterInclude, | ||
| "Regular expression to match printers to collect metrics for", | ||
| ).Default(ConfigDefaults.printerInclude).String(), | ||
| printerExclude: app.Flag( | ||
| FlagPrinterExclude, | ||
| "Regular expression to match printers to exclude", | ||
| ).Default(ConfigDefaults.printerExclude).String(), | ||
| } | ||
| return c | ||
| } | ||
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| func (c *collector) SetLogger(logger log.Logger) { | ||
| c.logger = log.With(logger, "collector", Name) | ||
| } | ||
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| func (c *collector) Build() error { | ||
| c.printerJobStatus = prometheus.NewDesc( | ||
| prometheus.BuildFQName(types.Namespace, Name, "job_status"), | ||
| "A counter of printer jobs by status", | ||
| []string{"printer", "status"}, | ||
| nil, | ||
| ) | ||
| c.printerStatus = prometheus.NewDesc( | ||
| prometheus.BuildFQName(types.Namespace, Name, "status"), | ||
| "Printer status", | ||
| []string{"printer", "status"}, | ||
| nil, | ||
| ) | ||
| c.printerJobCount = prometheus.NewDesc( | ||
| prometheus.BuildFQName(types.Namespace, Name, "job_count"), | ||
| "Number of jobs processed by the printer since the last reset", | ||
| []string{"printer"}, | ||
| nil, | ||
| ) | ||
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| var err error | ||
| c.printerIncludePattern, err = regexp.Compile(fmt.Sprintf("^(?:%s)$", *c.printerInclude)) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| c.printerExcludePattern, err = regexp.Compile(fmt.Sprintf("^(?:%s)$", *c.printerExclude)) | ||
| return err | ||
| } | ||
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| func (c *collector) GetName() string { return Name } | ||
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| func (c *collector) GetPerfCounter() ([]string, error) { return []string{"Printer"}, nil } | ||
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| type win32_Printer struct { | ||
| Name string | ||
| Default bool | ||
| PrinterStatus uint16 | ||
| JobCountSinceLastReset uint32 | ||
| } | ||
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| type win32_PrintJob struct { | ||
| Name string | ||
| Status string | ||
| } | ||
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| func (c *collector) Collect(_ *types.ScrapeContext, ch chan<- prometheus.Metric) error { | ||
| if err := c.collectPrinterStatus(ch); err != nil { | ||
| _ = level.Error(c.logger).Log("msg", "failed to collect printer status metrics", "err", err) | ||
| return err | ||
| } | ||
| if err := c.collectPrinterJobStatus(ch); err != nil { | ||
| _ = level.Error(c.logger).Log("msg", "failed to collect printer job status metrics", "err", err) | ||
| return err | ||
| } | ||
| return nil | ||
| } | ||
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| func (c *collector) collectPrinterStatus(ch chan<- prometheus.Metric) error { | ||
| var printers []win32_Printer | ||
| q := wmi.QueryAll(&printers, c.logger) | ||
| if err := wmi.Query(q, &printers); err != nil { | ||
| return err | ||
| } | ||
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| for _, printer := range printers { | ||
| if c.printerExcludePattern.MatchString(printer.Name) || | ||
| !c.printerIncludePattern.MatchString(printer.Name) { | ||
| continue | ||
| } | ||
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| printerStatus, ok := printerStatusMap[printer.PrinterStatus] | ||
| if !ok { | ||
| printerStatus = "Unknown" | ||
| } | ||
| ch <- prometheus.MustNewConstMetric( | ||
| c.printerStatus, | ||
| prometheus.GaugeValue, | ||
| 1, | ||
| printer.Name, | ||
| printerStatus, | ||
| ) | ||
| ch <- prometheus.MustNewConstMetric( | ||
| c.printerJobCount, | ||
| prometheus.CounterValue, | ||
| float64(printer.JobCountSinceLastReset), | ||
| printer.Name, | ||
| ) | ||
| } | ||
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| return nil | ||
| } | ||
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| func (c *collector) collectPrinterJobStatus(ch chan<- prometheus.Metric) error { | ||
| var printJobs []win32_PrintJob | ||
| q := wmi.QueryAll(&printJobs, c.logger) | ||
| if err := wmi.Query(q, &printJobs); err != nil { | ||
| return err | ||
| } | ||
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| groupedPrintJobs := c.groupPrintJobs(printJobs) | ||
| for group, count := range groupedPrintJobs { | ||
| ch <- prometheus.MustNewConstMetric( | ||
| c.printerJobStatus, | ||
| prometheus.GaugeValue, | ||
| float64(count), | ||
| group.printerName, | ||
| group.status, | ||
| ) | ||
| } | ||
| return nil | ||
| } | ||
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| type PrintJobStatusGroup struct { | ||
| printerName string | ||
| status string | ||
| } | ||
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| func (c *collector) groupPrintJobs(printJobs []win32_PrintJob) map[PrintJobStatusGroup]int { | ||
| groupedPrintJobs := make(map[PrintJobStatusGroup]int) | ||
| for _, printJob := range printJobs { | ||
| printerName := strings.Split(printJob.Name, ",")[0] | ||
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| if c.printerExcludePattern.MatchString(printerName) || | ||
| !c.printerIncludePattern.MatchString(printerName) { | ||
| continue | ||
| } | ||
| groupedPrintJobs[PrintJobStatusGroup{ | ||
| printerName: printerName, | ||
| status: printJob.Status, | ||
| }]++ | ||
| } | ||
| return groupedPrintJobs | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| package printer_test | ||
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| import ( | ||
| "testing" | ||
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| "github.com/alecthomas/kingpin/v2" | ||
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| "github.com/prometheus-community/windows_exporter/pkg/collector/printer" | ||
| "github.com/prometheus-community/windows_exporter/pkg/testutils" | ||
| ) | ||
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| func BenchmarkCollector(b *testing.B) { | ||
| // Whitelist is not set in testing context (kingpin flags not parsed), causing the collector to skip all printers. | ||
| printersInclude := ".+" | ||
| kingpin.CommandLine.GetArg(printer.FlagPrinterInclude).StringVar(&printersInclude) | ||
| testutils.FuncBenchmarkCollector(b, "printer", printer.NewWithFlags) | ||
| } |